1
Instrumentation, Controls & Electrical
Instrumentation & Controls
SPPA-T3000
Integration of auxiliary
power supply in SPPA-T3000
based on IEC 61850
• Technical Description
The bridge between the auxiliary power supply
and the unit I&C
April 2009
Answers for energy.
© Siemens AG 2009. All Rights Reserved.
Siemens Energy Sector
Instrumentation, Controls & Electrical
Table of contents
Table of contents............................................................................................................................................2
1. System overview ....................................................................................................................................3
1.1
Integration of auxiliary power supply ...............................................................................................4
1.2
Design of SPPA-T3000 I&C system ................................................................................................5
2. Integration of auxiliary power supply with IEC 61850.............................................................................6
2.1
Integration instead of linkage...........................................................................................................6
2.2
Communication within the system ...................................................................................................8
2.3
Clock time synchronization ..............................................................................................................9
2.4
Auxiliary power supply server and expert tools .............................................................................10
2.5
Operational diagnostics - Function diagnostics .............................................................................11
2.6
Handling of event and disturbance records ...................................................................................12
2.7
Data transfer to external systems via IEC 61850 ..........................................................................13
2.8
Data transfer to external systems without IEC 61850....................................................................14
3.
Engineering of the auxiliary power supply ............................................................................................15
4. IEC 61850 compatible components......................................................................................................17
4.1
SIPROTEC 4 .................................................................................................................................17
4.2
I/O boxes .......................................................................................................................................18
4.3
Transformer voltage regulator .......................................................................................................19
4.4
Network components .....................................................................................................................19
5. Network design and examples .............................................................................................................20
5.1
Design of IEC 61850 network ........................................................................................................20
5.2
Linking of protection devices/bay controllers in the MV network ...................................................21
5.3
Integration of LV auxiliary power supply bays ...............................................................................23
5.4
Integration of central data points via I/O boxes .............................................................................24
5.5
Protection of individual network sections via firewall or router ......................................................25
5.6
Unit-by-unit separation of the auxiliary power supply ....................................................................26
6.
Abbreviations........................................................................................................................................27
© Siemens AG 2009. All Rights Reserved.
2
Siemens Energy Sector
Instrumentation, Controls & Electrical
1. System overview
Integration of the auxiliary power supply based on the connection
of components in accordance with the new IEC 61850 standard
is a further innovative step in the direction of a fully integrated
I&C system for power generation plants of all performance
classes and for all energy sources.
The SPPA-T3000 I&C system is scalable from small applications
in heating plants through to the main I&C system of large power
plant units. It is based on an object-oriented data structure with a
strictly hierarchical separation of the process interfaces (data
acquisition), the server level with the automation (real-time
processing) and application (no real-time processing) servers
and the operation level (thin client).
One of the main objectives of SPPA-T3000 is the avoidance of black boxes and unnecessary links to ancillary systems.
Integration of the auxiliary power supply is an important step towards achieving this objective. With its object-oriented data
structure and the Ethernet network as a communication platform, the innovative and future-oriented concept of IEC 61850 is
an ideal match for the concept behind the system structure of SPPA-T3000. For this reason and thanks to the positive
experience gained in initial pilot projects with IEC 61850 in the field of power distribution, the decision was made at an early
stage to implement the direct integration of the auxiliary power supply in accordance with IEC 61850.
SPPA-T3000 - one software architecture
integrates all applications and tasks
Basic
automation
Fuel
Fail-safe
automation
Water/steam
cycle
Turbine
controller
Steam
generator
Turboset
Electrical
Solutions
3rd party
systems
Electrical auxiliary
power supply
© Siemens AG 2008. All rights reserved.
Page 17
Process engineering and auxiliary power supply converge
Energy • Fossil Power Generation • Instrumentation, Controls & Electrical
E F IE 11 R. Ostertag / Basis / E3_SB_IEC61850_e_V1-2
3
© Siemens AG 2009. All Rights Reserved.
Siemens Energy Sector
1.1
Instrumentation, Controls & Electrical
Integration of auxiliary power supply
Creating a link to and integrating information from the auxiliary power supply is nothing new. Up to now plants have generally
acquired or output this information via bit-parallel or analog input/output modules. With bit-parallel links, information has had
to be supplied to the I&C system via marshaling racks. This is a complex procedure involving between 1000 and 5000 signals
depending on the size of the unit and the energy source. These signals are output locally via contacts and need to be
engineered, cabled and commissioned.
The introduction of digital protection equipment into MV, HV and EHV systems brought with it the disadvantage that the time
stamp of the acquired signals could not be transferred with the signals.
If greater convenience was to be achieved for the auxiliary power supply, a separate switchgear control system had to be set
up as an alternative so as to permit the exchange of information between the two control systems over a dedicated link. Only
a small selection of information would usually be transferred via this interface, with the result that the scope of information
available to the main I&C was limited. This was especially inconvenient in the event of fault evaluations, as the data for
comparison were distributed between two archives and comparison of the time stamps was only conditionally possible.
Since IEC 61850 was accepted as the worldwide standard for power distribution systems in 2004, it has successfully
established itself in all areas of power distribution. Implemented systems range from traction networks (400 kV) to distribution
networks (110, 20, 10 kV), through power supply companies, municipal utilities and infrastructure services to industrial
locations. Today IEC 61850 is the globally accepted communication standard for switchgear systems and can already be
regarded as the state of the art.
IEC 61850 is based on fast, primarily Ethernet-based communication, making it especially suitable for use in modern I&C
systems. Switchgear-specific functions, such as system interlocking or intertripping, are moved to the plant level and do not
need to be simulated in the I&C system for this reason.
The disadvantages of the bit-parallel link and the disadvantages of an additional switchgear control system no longer exist in
the integrated solution which has now become available.
Digital devices with communication interfaces are already implemented in switchgear systems, in unit protection and in other
components of the auxiliary power supply. The number of devices available with IEC 61850 is increasing steadily and devices
for all the tasks of the auxiliary power supply are already available today. The devices are connected via an Ethernet network
and to the automation bus of the I&C system.
© Siemens AG 2009. All Rights Reserved.
4
Siemens Energy Sector
1.2
Instrumentation, Controls & Electrical
Design of SPPA-T3000 I&C system
SPPA-T3000 has a clearly structured system concept comprising three hierarchy levels:
Process interfaces:
Local data acquisition can be implemented by means of FUM modules, SIMATIC ET200M or by directly connecting intelligent
field components via Profibus or, in the case of the auxiliary power supply, via IEC 61850.
Server level:
Data are processed in automation servers (SIMATIC S7-400 (F)(H) and CM104). These handle the open- and closed-loop
controls for the connected process and ensure reliable operation even if the higher-level I&C systems fail. The application
server is the central component. It handles all the processes which do not require real-time execution capability. Such
processes include the alarm sequence display (ASD), archives and archive evaluations, curve displays, engineering and
diagnostics for the entire system, and display processing for the operator terminals.
Operation level:
All process operation takes place at this level. The requisite number of operator terminals is available for this purpose. These
terminals are connected to the application server as thin clients, generally via a dedicated bus system, and visualize the
process on a web interface.
SPPA-T3000
Innovative configuration for power plants
Hardware allocation
Operation
level
Application bus
Timer server
Application server
Server level
Automation bus
SIMATIC S7
Automation server
CM 104
Process optimization
Automation functions
Integration with IEC 61850
Gateway functions
Process interfaces
Page 2
Process engineering and auxiliary power supply converge
© Siemens AG 2008. All Rights Reserved.
Energy • Fossil Power Generation • Instrumentation, Controls & Electrical
E F IE 523 Torscher – E F IE 11 Ostertag / Technical / E3_ST1_IEC61850_d_V1-1
5
© Siemens AG 2009. All Rights Reserved.
Siemens Energy Sector
Instrumentation, Controls & Electrical
2. Integration of auxiliary power supply with
IEC 61850
2.1
Integration instead of linkage
The application of the IEC 61850 philosophy in the auxiliary power supply of the power plant is oriented towards the specific
requirements of the auxiliary power supply distribution networks in the power plant. Importance has therefore been attached to
the close integration of the auxiliary power supply in the main I&C rather than to implementing a link to a separate system.
This is especially reflected in the following features:
„
Standard solution without company-specific special features.
„
Clearly defined interface to auxiliary power supply equipment through import of SCD files and direct further processing
of these data.
„
Operating philosophy is similar to that of the solution in the main I&C.
„
Rights management ensures exclusive access by qualified personnel.
„
Time synchronization of main I&C system is extended to include the IEC 61850 bay control devices.
„
Shared data archive for process data and data from the auxiliary power supply.
„
Extension of main I&C system diagnostics to include the IEC 61850 components.
„
Automatic retrieval of event and disturbance records and archiving on a central server.
System integration through to auxiliary power supply
in accordance with IEC 61850
Thin clients
Autonomous switchgear distributed
or remote control system
IEC60870-5-101
IEC60870-5-104
Application bus
Application
server
Link to
external
protocol
CM104
System boundary
Automation bus
Automation server
CM104
Integrated
solution
System boundary
Direct connection of bay control devices/
Integration in SPPA-T3000
Page 3
Process engineering and auxiliary power supply converge
© Siemens AG 2008. All Rights Reserved.
Energy • Fossil Power Generation • Instrumentation, Controls & Electrical
E F IE 523 Torscher – E F IE 11 Ostertag / Technical / E3_ST1_IEC61850_d_V1-1
© Siemens AG 2009. All Rights Reserved.
6
Siemens Energy Sector
Instrumentation, Controls & Electrical
However, integration also means direct integration of the data from the auxiliary power supply in the data inventory of the I&C
system. The data are available in the automation, on the user interface and in the archive with a priority equal to that of data
from the process.
The concept for linking the IEC 61850 network can be compared with the link from the process automation to the automation
servers.
In the process automation, Profibus components, such as SIMATIC ET200M and FUM modules, are connected to an
automation server of the type S7-400H(F). In the auxiliary power supply, the link takes the form of an Ethernet network
connection to an automation server of the CM104 family. This CM104 automation server is an integral part of the I&C system
and can handle a wide variety of tasks, such as process optimization, simple automation tasks, external protocol links, in
addition to integration of the auxiliary power supply by means of the IEC 61850 interface.
The CM104 automation server can be configured redundantly or not depending on the importance of the auxiliary power
supply. Here redundant means that two servers are connected independently to the IEC 61850 network and each server is
also connected to the automation bus of the I&C system via a separate interface. The two servers are connected via two
further Ethernet interfaces and monitor each other. Both servers are operated in hot mode and bumpless changeover is
effected for the most part as required. Data losses are ruled out entirely.
Link between IEC 61850 network and
automation bus of SPPA-T3000 I&C system
Thin clients
Application bus
Application
server
Communication
within system
Automation bus
Automation server
CM104
IEC 61850
communication
IEC 61850 network
Profibus
communication
Direct connection of bay control devices/Integration in SPPA-T3000
Page 4
Process engineering and auxiliary power supply converge
© Siemens AG 2008. All Rights Reserved.
Energy • Fossil Power Generation • Instrumentation, Controls & Electrical
E F IE 523 Torscher – E F IE 11 Ostertag / Technical / E3_ST1_IEC61850_d_V1-1
7
© Siemens AG 2009. All Rights Reserved.
Siemens Energy Sector
2.2
Instrumentation, Controls & Electrical
Communication within the system
Communication within the IEC 61850 network, i.e. below the level of the CM104 automation server, is IEC 61850 compliant.
The bay control devices communicate with each other by means of the GOOSE function (GOOSE - Generic Object Oriented
Substation Event). This fast sideways communication between field components can be used for setting up electrical
protection functions, such as reverse interlocks and plant interlocks. By definition the GOOSE data exchange is not evaluated
by the I&C system. Transfer of GOOSE messages to the automation bus of the I&C system is effectively prevented by the
automation server.
Communication between the IEC 61850 field components and the automation server takes place by means of reports. These
reports are converted to the internal SPPA-T3000 communication structure in the automation server of the auxiliary power
supply and transferred to the addressed recipients. Recipients can be other automation servers with a lower-level IEC 61850
network, automation servers from the process automation, or one or more application servers. Needless to say, redundancy
criteria are taken into account here.
Link between IEC 61850 network and
automation bus of SPPA-T3000 I&C system
Thin clients
Application bus
Communication with I&C system via reports
Application
server
Automation bus
Automation server
CM104
AS – AS link
GOOSE
Reports
Direct connection of bay control devices/Integration in SPPA-T3000
Page 5
Process engineering and auxiliary power supply converge
© Siemens AG 2008. All Rights Reserved.
Energy • Fossil Power Generation • Instrumentation, Controls & Electrical
E F IE 523 Torscher – E F IE 11 Ostertag / Technical / E3_ST1_IEC61850_d_V1-1
© Siemens AG 2009. All Rights Reserved.
8
Siemens Energy Sector
2.3
Instrumentation, Controls & Electrical
Clock time synchronization
The clock times of the auxiliary power supply components connected via IEC 61850 are synchronized via NTP (Network Time
Protocol) directly from the central time server of the I&C system. This ensures that all the I&C system components on the
Ethernet network have access to synchronized time information and that the time stamps of items of information can be
compared on this basis.
All information from field components which are in a position to time stamp binary and analog information upon its acquisition
or generation and to transfer it to the I&C system is also transferred to the data inventory of the I&C system via the CM104
bearing this time stamp.
The uniform system-wide time facilitates accident analyses and other archive evaluations.
System-wide uniform time
down to the IEC 61850 field components
Thin clients
System-wide uniform time simplifies fault
analysis and archive evaluation
Application bus
Application
server
Automation bus
Automation server
CM104
Direct connection of bay control devices/Integration in SPPA-T3000
Page 6
Process engineering and auxiliary power supply converge
© Siemens AG 2008. All Rights Reserved.
Energy • Fossil Power Generation • Instrumentation, Controls & Electrical
E F IE 523 Torscher – E F IE 11 Ostertag / Technical / E3_ST1_IEC61850_d_V1-1
9
© Siemens AG 2009. All Rights Reserved.
Siemens Energy Sector
2.4
Instrumentation, Controls & Electrical
Auxiliary power supply server and expert tools
In some cases linking of the auxiliary power supply may involve a large number of devices from different suppliers and
different device families. All devices or device families have specific engineering and diagnostic tools (e.g. DIGSI for
SIPROTEC4 and ToolBox for SICAM 1703).
These expert tools are generally operated by the relevant experts and not by control room personnel. They are used for tasks
such as device parameterization and device function diagnostics, e.g. checking of actuation or trip criteria.
One or more auxiliary power supply servers as required can be connected to the IEC 61850 network in order to permit work
with these tools. Access by these servers to auxiliary power supply components via the application or automation bus is
prevented by integrated protection mechanisms. This is designed to prevent excessive loads on the individual bus systems.
The tasks of the auxiliary power supply server include specific tasks, such as:
„
Device engineering/parameterization
„
Upload/download of parameter sets
„
Diagnostics for internal device functions
„
Backup of engineering data
„
Archiving of event and disturbance records
Integration of auxiliary power supply server
for expert tools in auxiliary power supply system
Thin clients
IEC Auxiliary Sever
for expert tools in auxiliary power
supply system
Application bus
Application
server
Automation bus
Automation server
CM104
Direct connection of bay control devices/Integration in SPPA-T3000
Page 7
Process engineering and auxiliary power supply converge
© Siemens AG 2008. All Rights Reserved.
Energy • Fossil Power Generation • Instrumentation, Controls & Electrical
E F IE 523 Torscher – E F IE 11 Ostertag / Technical / E3_ST1_IEC61850_d_V1-1
© Siemens AG 2009. All Rights Reserved.
10
Siemens Energy Sector
2.5
Instrumentation, Controls & Electrical
Operational diagnostics - Function diagnostics
Integration in the I&C system means that all the important operational functions, such as IEC 61850 network diagnostics,
operational diagnostics for the IEC 61850 components and time clock synchronization are possible directly from the I&C
system.
The entire IEC 61850 network, including the active components and connecting cables, is monitored by the diagnostics
function of the I&C system via the SNMP protocol and displayed on the user interface of the I&C system.
In addition, electrical engineering experts have the option of selecting components via an auxiliary power supply server using
the dedicated expert tools for the connected IEC 61859 field components. This permits specialists to access the auxiliary
power supply components without affecting the I&C networks.
Diagnostic philosophy for aux. power supply system
Operational diagnostics – Function diagnostics
Function diagnostics:
IEC Auxiliary
Server
Thin clients
‰ Expert systems/engineering tools for
auxiliary power supply components (DIGSI,
TOOLBOX, …. )
‰ Checking of component functionality
Operational diagnostics:
‰ Diagnostics for bay control device
communication
Application bus
Application
server
‰ Administration and diagnostics for
IEC 61850 network
Automation bus
Automation server
CM 104
Direct connection of bay control devices/Integration in SPPA-T3000
Page 8
Process engineering and auxiliary power supply converge
© Siemens AG 2008. All Rights Reserved.
Energy • Fossil Power Generation • Instrumentation, Controls & Electrical
E F IE 523 Torscher – E F IE 11 Ostertag / Technical / E3_ST1_IEC61850_d_V1-1
11
© Siemens AG 2009. All Rights Reserved.
Siemens Energy Sector
2.6
Instrumentation, Controls & Electrical
Handling of event and disturbance records
Event and disturbance records are output when network or machinery protection equipment at the MV, HV or EHV levels
responds or trips due to a fault in the auxiliary power supply network. An evaluation of these event and disturbance records
can identify the cause of the protection trip.
The integrated solution of the IEC 61850 link also includes the automatic retrieval of these event and disturbance records from
the protection devices and archiving of these files on a central server in the network. The CM104 automation server scans the
connected protection devices cyclically for new event and disturbance records and transfers these to a freely definable
computer (IP address) in the network.
Because the evaluation of these event and disturbance records is based on expert tools (e.g. SIGRA), the auxiliary power
supply engineering server is the obvious location for archiving.
Archiving of these event and disturbance records on the application server, though technically possible, is not necessarily a
good thing. In large systems, this places an additional load on the storage capacity of the server, thus reducing the storage
capacity of the process archive.
Automatic transmission of event and
disturbance records with central archiving
IEC Auxiliary
Server
Thin clients
Transmission of event and disturbance records
‰ Cyclic scanning of protection devices for
new event and disturbance records
‰ Archiving of event and disturbance records
on configurable PC/server in network
Application bus
Application
server
Automation bus
Automation server
CM104
Direct connection of bay control devices/Integration in SPPA-T3000
Page 9
Process engineering and auxiliary power supply converge
© Siemens AG 2008. All Rights Reserved.
Energy • Fossil Power Generation • Instrumentation, Controls & Electrical
E F IE 523 Torscher – E F IE 11 Ostertag / Technical / E3_ST1_IEC61850_d_V1-1
© Siemens AG 2009. All Rights Reserved.
12
Siemens Energy Sector
2.7
Instrumentation, Controls & Electrical
Data transfer to external systems via IEC 61850
In cases where data and information also have to be transferred from the IEC 61850 field components to other systems, this is
implemented directly from the field components via additional logical links.
To this end the standard allows each server component to be connected to several client applications, e.g. five logical links
can be set up between one SIPROTEC 4 device and other systems.
Because the I&C system is a client function, the direct transfer of information from the I&C system by means of IEC 61850
communication is not possible.
Bay control devices communicate with multiple
client applications, e.g. 5 clients for SIPROTEC
IEC Auxiliary
Server
Thin clients
Grid control center
e.g. DIGSI
Switchgear DCS
Substation
Grid automation
Application bus
IEC
61850
Application
server
Automation bus
Automation server
Client
Server
Direct connection of bay control devices/Integration in SPPA-T3000
Page 10
Process engineering and auxiliary power supply converge
© Siemens AG 2008. All Rights Reserved.
Energy • Fossil Power Generation • Instrumentation, Controls & Electrical
E F IE 523 Torscher – E F IE 11 Ostertag / Technical / E3_ST1_IEC61850_d_V1-1
13
© Siemens AG 2009. All Rights Reserved.
Siemens Energy Sector
2.8
Instrumentation, Controls & Electrical
Data transfer to external systems without IEC 61850
If data also need to be transferred from the IEC 61850 field components by means of remote control protocol, e.g. to a grid
control center, this is performed using an additional CM104 automation server which then ensures communication via
IEC60870-5-101 or -104 or Modbus, for example.
Data transfer to external systems
via remote control interfaces
Grid control center
IEC Auxiliary
Server
Thin clients
Switchgear DCS
Substation
Grid automation
Application bus
e.g. IEC60870-5-101/ -104
Application
server
CM104
Automation bus
Automation server
CM104
Client
Server
Direct connection of bay control devices/Integration in SPPA-T3000
Page 11
Process engineering and auxiliary power supply converge
© Siemens AG 2008. All Rights Reserved.
Energy • Fossil Power Generation • Instrumentation, Controls & Electrical
E F IE 523 Torscher – E F IE 11 Ostertag / Technical / E3_ST1_IEC61850_d_V1-1
© Siemens AG 2009. All Rights Reserved.
14
Siemens Energy Sector
Instrumentation, Controls & Electrical
3. Engineering of the auxiliary power supply
The IEC 61850 is the first standard to include the engineering process in its definition. The philosophy is oriented towards the
usual structures in power distribution, i.e. from the low level to the high level or, more accurately, from the field to the I&C.
First the bay control devices are parameterized using their dedicated engineering tools (e.g. DIGSI for SIPROTEC devices)
and the ICDs (Intelligent Electronic Device Configuration Description) defined in IEC 61850 are generated.
In a second step, these ICDs are grouped to form SCDs (Substation Configuration Description). SCD files generally represent
a switchgear system. For this purpose the ICD files are loaded into a system configurator, e.g. DIGSI, and IP addresses and
GOOSE functions are added.
If not otherwise specified in the project, these services are provided by the supplier of the switchgear system.
SPPA-T3000 is capable of importing these SCD files, thus avoiding dual input of switchgear information. Ideally the data
import will correspond to the engineering approach of SPPA-T3000 whereby all data are only ever input at one location either directly in the system or by means of data import. This noticeably helps to avoid configuration errors, resulting in lower
engineering costs, shorter commissioning times and an overall increase in the quality of the engineered solution.
Engineering process to IEC 61850 - e.g. for
SIPROTEC4 devices and further field components
Device configuration
Device
library
SIPROTEC
device
library
Device
configuration
tools
supplier X
System configuration
Device
description
( ICD file )
Import of
system descriptions
(SCD files) into main
I&C system and further
processing of engineered data
Device
description
( ICD file )
System
description
( SCD file )
SPPA-T3000
Device
configurations
tools
supplier X
SIPROTEC
Page 12
Process engineering and auxiliary power supply converge
© Siemens AG 2008. All Rights Reserved.
Energy • Fossil Power Generation • Instrumentation, Controls & Electrical
E F IE 523 Torscher – E F IE 11 Ostertag / Technical / E3_ST1_IEC61850_d_V1-1
15
© Siemens AG 2009. All Rights Reserved.
Siemens Energy Sector
Instrumentation, Controls & Electrical
IEC 61850 distinguishes between two reporting procedures:
„
Static reporting
„
Dynamic reporting
If devices communicate using the static reporting procedure, this means that the engineering tool of the bay control device
selects all the information visible to the I&C which can be retrieved using this tool. This selection is visible in the SCD file and
is therefore detected by the I&C system.
A large number of the bay control devices, however, use the far more flexible principle of dynamic reporting whereby all the
information in the bay control devices is available to the I&C.
This is why the SCD also includes all the available data points - anything up to 1200 data points are possible with a
SIPROTEC device. During configuration the I&C selects the 20 to 40 items of information which are required.
In other words the 1150 items of information which are not required would have to be deleted when the SCD file is imported,
which would again be susceptible to errors. For this reason the signal list is imported in addition to the SCD file and is used for
the determining the message scope during the clarification phase. The signal list is also used for translating the IEC 61850
data structure into the appropriate tag (KKS) structure. Importing the signal list automatically deletes all the data points which
are not required from the SCD file.
The signal list is created by the switchgear supplier if not otherwise specified in the project.
When the control system logs onto the bay control device as a client on startup, the I&C sends a record control block to the
bay control device, thereby requesting only the data contained in this logon.
Further processing of engineering data from the SCD files and the signal list is performed using the standard tools of the I&C
system, i.e. the link to the automation, archiving, the display of data points, the derivation of alarms, etc.
If changes become necessary in auxiliary power supply components, a delta import of the SCD file or signal list is possible,
i.e. the import interface detects the changes and reduces or adds to the data inventory accordingly. This procedure is mainly
necessary if the connected IEC 61850 components only support static reporting.
If the connected IEC 61850 components support dynamic reporting, however, and if additional information is required in the
I&C, this only needs to be added to the I&C system engineering. Upon activation the I&C requests the extended record control
block in the bay control device, whereupon the data are made available to the I&C system. Since no changes are necessary in
the bay control devices, the SCD file does not need to be reimported.
Standardization of the structure and content of the SCD files means that they can also come from different system suppliers.
© Siemens AG 2009. All Rights Reserved.
16
Siemens Energy Sector
Instrumentation, Controls & Electrical
4. IEC 61850 compatible components
The driver implemented in the SPPA-T3000 I&C system for communication in accordance with IEC 61850 is deviceindependent with respect to the connected bay control devices. All devices which operate according to the principle of
unbuffered reporting can be connected. However because IEC 61850 is not completely unambiguous in all points we
recommend that the IEC 61850 components be tested in conjunction with the control system prior to their initial use.
Part 10 of IEC 61850 defines the test criteria and certification of bay control devices. The use of certified devices must be
given preference in all cases, as their general compliance with the standard has already been demonstrated, thus minimizing
the amount of testing which may prove necessary in conjunction with the I&C.
The devices below are currently in use in implemented projects and their functional operation has been tested in conjunction
with SPPA-T3000:
4.1
SIPROTEC 4
Devices of the SIPROTEC 4 family are used in MV auxiliary power supply distribution and in unit protection. All the available
devices are approved for use, including protection devices, bay controllers and combined protection devices/bay controllers.
The connection to the I&C can be implemented in a redundant or non-redundant configuration, with fiber-optic or RJ45 data
links.
SIPROTEC V4 –
Only five modules for wide range of functions
Protection devices
(including devices
with control
functionality)
Bay control devices
Combined
protection/
bay control devices
Page 13
Process engineering and auxiliary power supply converge
© Siemens AG 2008. All Rights Reserved.
Energy • Fossil Power Generation • Instrumentation, Controls & Electrical
E F IE 523 Torscher – E F IE 11 Ostertag / Technical / E3_ST1_IEC61850_d_V1-1
17
© Siemens AG 2009. All Rights Reserved.
Siemens Energy Sector
4.2
Instrumentation, Controls & Electrical
I/O boxes
I/O boxes are used for the acquisition of binary and analog information and for the local output of commands. Data are
acquired or output without any further processing in the bay control device.
Devices from the SIPROTEC range, such as 6MD61 or devices from the SICAM 1703 range, can also be used as hardware
alternatives.
„
Compact devices such as SIPROTEC 6MD61
are especially suitable if small quantities of data are acquired, primarily in a distributed structure, and devices are
installed in the vicinity of the switchgear or other EMC-critical zones.
„
I/O boxes from the SICAM 1703 range
are modular in design and can be extended from small data quantities to data quantities from 1000 I/Os. These must be
installed in control cabinets. The link to the data network is configured non-redundantly.
IEC 61850 components
Structure of peripheral elements for I/O-Box
PS-6630 Pow er supply module 24-60VDC EMC+
PS-6632 Pow er supply module 110-220VDC EMC+
Periphera l inte rface e leme nt
PE-6400 For Ax e le ctrical periherals bus (USB, 3m)
PE-6401 For Ax optica l periphe ra ls bus (PCF, 200m)
Binary I/O module s
DI-6100
Bina ry input 2x8, 24-60VDC, 10ms resolution
DI-6101
Bina ry input 2x8, 110/220VDC, 10ms resolution
DI-6102
Bina ry input 2x8, 24-60VDC, 1ms resolution
DI-6103
Bina ry input 2x8, 110/220VDC, 1ms resolution
DO-6200 Bina ry output transistor 2x8, 24-60VDC
DO-6212 Bina ry output relay 8x 24-220VDC/230VAC
Analog I/O modules
AI-6300
Analog input 2x2 ±20mA/±10V
AI-6307
Analog input 2x 2 ±5mA
AI-6310
Analog input 2x 2 Pt100/Ni100
AI-6303 *) Analog input (converte r,4xU,3xI) EMC+
AO-6380 Analog output 4x ±20mA/±10mA/±10V
TE-6420
Speed mea surement 2x2 24VDC/5VDC/NAMUR
TE-6450
Position measure me nt 2x2 SSI/RS-422
Page 14
Process engineering and auxiliary power supply converge
= 1 peripheral element
Max. 8
*) not modular, 1 autonomous peripheral element
© Siemens AG 2008. All Rights Reserved.
Energy • Fossil Power Generation • Instrumentation, Controls & Electrical
E F IE 523 Torscher – E F IE 11 Ostertag / Technical / E3_ST1_IEC61850_d_V1-1
© Siemens AG 2009. All Rights Reserved.
18
Siemens Energy Sector
4.3
Instrumentation, Controls & Electrical
Transformer voltage regulator
The Gossen transformer regulator can be used.
This regulator has an IEC 61850 interface and has been tested in conjunction with SPPA-T3000.
4.4
Network components
Network switches from the Canadian company RuggedCom are used as active components. RuggedCom has a high level of
competence in the field of networks and was the first company to launch network switches which satisfied the stringent
requirements of IEC 61850.
„
RS 8000:
with 8 x fiber-optic interfaces (MTRJ)
„
RS 8000H:
with 4 x RJ45 and 4 fiber-optic switches (ST)
„
RS 8000T:
with 6 x RJ45 and 2 fiber-optic switches (MTRJ)
These three devices with different interface configurations have been directly integrated in the monitoring and diagnostic
functions of the I&C system. These three different switches lend a high degree of flexibility to the network design while at the
same time reducing type diversity. This restriction also brings advantages in connection with spare parts management.
IEC 61850 components
Network components
Page 15
Process engineering and auxiliary power supply converge
„
Ethernet switch, to
IEC 61850 specifications
„
DIN rail mounting,
suitable for mounting in
switchgear
„
Type RS8000:
8 FO interfaces
„
Type RS8000H:
4 FO interfaces
4 RJ45 interfaces
„
Type RS8000T:
2 FO interfaces
6 RJ45 interfaces
© Siemens AG 2008. All Rights Reserved.
Energy • Fossil Power Generation • Instrumentation, Controls & Electrical
E F IE 523 Torscher – E F IE 11 Ostertag / Technical / E3_ST1_IEC61850_d_V1-1
19
© Siemens AG 2009. All Rights Reserved.
Siemens Energy Sector
Instrumentation, Controls & Electrical
5. Network design and examples
5.1
Design of IEC 61850 network
IEC 61850 standardizes a 100 Mbit Ethernet network as the communication platform. The preferred network structure is a ring
structure with fiber optic connections. Although a star-shaped network design is actually permitted by the standard, it is not to
be recommended due to the lack of redundancy.
The ring structure and ring management, which is also standardized in IEC 61850, ensures the necessary fault tolerance in
the network such that, in the event of failure of a component, all the other components in the network continue to be
accessible and the failure only has minimal effects on operation of the other equipment. Ring management operates in
accordance with the rapid spanning tree protocol, which reconfigures the ring in the event of faults in the network such that all
nodes become accessible if at all possible. This reconfiguration of the ring is performed with changeover times << 100 ms.
This means that, if GOOSE functions are used, system interlocks and protection functions remain fully operational in the event
of a fault.
The detailed design of the network is largely determined by the communication interfaces of the connected components. The
simplest form is an RJ45 interface. This permits the device to be connected to a network switch. If the device has two
interfaces, a redundant switch can also be connected. A very convenient solution was realized by Siemens in the
SIPROTEC 4 devices. These feature two fiber optic interfaces at the rear and the switch functionality was integrated directly in
the device. The devices can be connected directly to the fiber optic rings without the need for an external switch.
In practice the network will usually be a mixture of a ring structure and a star structure. A ring structure was exclusively
configured in the MV network and in the link to the unit protection. In the LV network and in the links to other auxiliary power
supply components, the network switches are integrated in fiber-optic ring structures. The links to bay control devices and
IEC 61850 components are implemented in a star configuration with RJ45 connecting cables.
Typical configuration
Concept: IEC 61850 network
I&C EQUIPMENT
ROOM
Automation bus for main I&C
Redundant CM 104
A0BFS
A0BFA
A0BHA
A0BUK
A0BVK
A0BFJ
A0BHJ
A0BFK
A0BHK
A0BUJ
A0BVJ
A0BFU
A0BUS
A0BVS
A0BUU
A0BVU
A0BFV A0BFW
A0BHV A0BHW
A0BFB
A0BHB
A0BFC
A0BHC
A0BFD
A0BHD
A0BFE
A0BHE
A0BFF
A0BHF
A0BUA
A0BVA
A0BRA
A0BUB
A0BVB
A0BRB
A0BBK
A0BBJ
A0BBD
A0BBC
A0BBB
A0BBA
Page 16
Process engineering and auxiliary power supply converge
Fiber-optic link
RJ45 link
© Siemens AG 2008. All Rights Reserved.
Energy • Fossil Power Generation • Instrumentation, Controls & Electrical
E F IE 523 Torscher – E F IE 11 Ostertag / Technical / E3_ST1_IEC61850_d_V1-1
© Siemens AG 2009. All Rights Reserved.
20
Siemens Energy Sector
5.2
Instrumentation, Controls & Electrical
Linking of protection devices/bay controllers in the MV network
If devices from the Siemens SIPROTEC 4 range are used, they can be connected by two different methods:
„
By means of a direct link to the fiber-optic rings or
„
By means of RJ45 links to additional network switches
Direct integration in the fiber-optic ring must always be given preference due to its superior electromagnetic compatibility
(EMC) if bay control devices are installed directly in the LV section of the switchgear system.
Use of the network switches from RuggedCom is necessary with this variant as the ring management of the SIPROTEC
devices is designed specifically for these network components. No switches from other suppliers are currently released for
use.
Typical configuration for
IEC 61850 compliant linking of MV switchgear (1)
I&C EQUIPMENT
ROOM
Automation bus for main I&C
CM 104
CM 104
FO link
Bay 1 ... n
RJ45 link
Switchgear
Page 17
Process engineering and auxiliary power supply converge
© Siemens AG 2008. All Rights Reserved.
Energy • Fossil Power Generation • Instrumentation, Controls & Electrical
E F IE 523 Torscher – E F IE 11 Ostertag / Technical / E3_ST1_IEC61850_d_V1-1
21
© Siemens AG 2009. All Rights Reserved.
Siemens Energy Sector
Instrumentation, Controls & Electrical
Typical configuration for
IEC 61850 compliant linking of MV switchgear (2)
I&C EQUIPMENT
ROOM
Automation bus for main I&C
CM 104
CM 104
Protection panel BBA
Linking of protection control devices for MV switchgear BBA
Max. 24 devices
Protection panel BBB
Linking of protection control devices for MV switchgear BBB
Page 18
FO link
Max. 24 devices
Process engineering and auxiliary power supply converge
RJ45 link
© Siemens AG 2008. All Rights Reserved.
Energy • Fossil Power Generation • Instrumentation, Controls & Electrical
E F IE 523 Torscher – E F IE 11 Ostertag / Technical / E3_ST1_IEC61850_d_V1-1
If the devices are installed in switchgear cabinets or on protection panels in electronic equipment rooms, they can also be
connected via external network switches.
Supply limit for Ethernet network:
The supply limit should be the switchgear connection to the network or the protection panel or cabinet, i.e. the device
installation and the internal switchgear/cabinet/panel fiber-optic links are to be supplied by the system supplier. The incoming
fiber-optic cables from the I&C network cabinet are supplied and installed by I&C.
© Siemens AG 2009. All Rights Reserved.
22
Siemens Energy Sector
5.3
Instrumentation, Controls & Electrical
Integration of LV auxiliary power supply bays
If auxiliary power supply panels, i.e. incoming feeder panels and coupler panels, are to be integrated into the IEC 61850 data
network in LV distribution systems, I/O boxes are used for this purpose. Unlike MV protection devices and bay controllers, I/O
boxes have no field-specific functions, i.e. information is simply acquired and output.
The process-related outgoing feeders in LV distribution systems are usually equipped with SIMOCODE components and
integrated directly in the automation equipment via a PROFIBUS DP connection.
Devices from the SIPROTEC 4 and SICAM 1703 ACP ranges are currently available as tested I/O boxes. SIPROTEC devices,
such as 6MD61, come with a fixed number of signal quantities but can be integrated in the data network like any other
SIPROTEC devices.
I/O boxes from the SICAM 1703 range are modular in design and can therefore be adapted to suit the configuration
requirements of the particular system. Because these devices only feature one IEC 61850 interface to the I&C (1 xRJ45), an
external network switch must always be implemented for network integration. The lack of network redundancy can, however,
be compensated for through systematic division of actuators between the two independent buses of the power supply system
and the appropriate allocation of I/O boxes.
Typical configuration for IEC 61850 network
linking LV switchgear (auxiliary power supply)
LAN/WAN
Automation bus for main I&C
IEC61850
I&C EQUIPMENT
ROOM
Master control
element
Switch
Up to 16 peripheral
elements
I&C cabinet
Linking of I/O box
Power supply
Peripheral interface
element
LV
switchgear 1
RJ45 link
Page 19
FO link
Unit B
Unit A
*)
Unit B
Unit A
*)
LV
switchgear 2
Up to 8 I/O modules
*) If implemented
Process engineering and auxiliary power supply converge
© Siemens AG 2008. All Rights Reserved.
Energy • Fossil Power Generation • Instrumentation, Controls & Electrical
E F IE 523 Torscher – E F IE 11 Ostertag / Technical / E3_ST1_IEC61850_d_V1-1
The supply limit for the network must be agreed project-specifically.
If nothing is stipulated, the recommendations for MV integration apply.
The integration of LV auxiliary supply bays in the IEC 61850 network is meaningful in cases where it is seen to be important
that the entire auxiliary power supply is mapped in the I&C system in accordance with a uniform structure.
Alternatively it is also possible to integrate the LV auxiliary power supply bays in the Profibus lines.
23
© Siemens AG 2009. All Rights Reserved.
Siemens Energy Sector
5.4
Instrumentation, Controls & Electrical
Integration of central data points via I/O boxes
If data need to be acquired at a central point in the power plant, e.g. marshaling racks in the area of the FGD plant, I/O boxes
from the SICAM 1703 ACP range can also be used for this purpose.
Typical configuration for IEC 61850 network
linking central I/O boxes
LAN/WAN
Automation bus for main I&C
IEC61850
I&C EQUIPMENT
ROOM
Master control
element
Switch
Up to 16 peripheral
elements
I&C cabinet
Linking of I/O box
Power supply
Peripheral interface
element
FO link
RJ45 link
Page 20
Leittechnik-Schrank
Linking of I/O box for FGD
Process engineering and auxiliary power supply converge
Up to 8 I/O modules
I/O box allows up to 1,000 I/Os
© Siemens AG 2008. All Rights Reserved.
Energy • Fossil Power Generation • Instrumentation, Controls & Electrical
E F IE 523 Torscher – E F IE 11 Ostertag / Technical / E3_ST1_IEC61850_d_V1-1
© Siemens AG 2009. All Rights Reserved.
24
Siemens Energy Sector
5.5
Instrumentation, Controls & Electrical
Protection of individual network sections via firewall or router
If individual sections are to be protected from access by other nodes of the network, e.g. access to unit protection devices via
central engineering tool, the link to individual network sections can be protected by means of firewalls or network routers.
It must be ensured, however, that the bay control devices in this protected network section are routing-capable or that they
can communicate via a standard gateway.
Typical configuration for
IEC 61850 compliant linking via firewall or router
I&C EQUIPMENT
ROOM
Automation bus for main I&C
CM 104
Redundant
CM 104
Link via firewall or router
Not redundant
Note: Components must
feature routing capability!
FO link
RJ45 link
Example for unit protection
Page 21
Process engineering and auxiliary power supply converge
Example for high-speed transfer
© Siemens AG 2008. All Rights Reserved.
Energy • Fossil Power Generation • Instrumentation, Controls & Electrical
E F IE 523 Torscher – E F IE 11 Ostertag / Technical / E3_ST1_IEC61850_d_V1-1
25
© Siemens AG 2009. All Rights Reserved.
Siemens Energy Sector
5.6
Instrumentation, Controls & Electrical
Unit-by-unit separation of the auxiliary power supply
If a project comprises several power plant units and some shared common equipment, the I&C is also structured according to
units as a consequence. This separation is reflected in the overall I&C structure, the benefit here being that the I&C of each
unit can be shut down without affecting operation of the rest of the plant.
This requirement generally also applies to the auxiliary power supply.
For the IEC 61850 network this means that the network rings are configured separately for the units and the common
equipment. All network rings end in a network cabinet in the I&C equipment room.
This is also where the redundant connection to the automation bus of the main I&C is implemented.
Typical configuration: Dual-unit plant
I&C concept with IEC 61850 compliant linking
Thin clients
User-defined access to
auxiliary power supply
systems
Terminal bus for main I&C, unit A
Terminal bus for main I&C, common
equipment
Terminal bus for main I&C, unit B
Application server
SPPA-T3000
Automation bus for main I&C, unit A
Automation bus for main I&C, common
equipment
CM 104
Automation bus for auxiliary power supply
equipment
MV switchgear
LV switchgear
Unit A
Page 22
CM 104
Process automation
Process engineering
Process automation
Process engineering
Automation bus for main I&C, unit B
Automation bus for auxiliary power supply
equipment
MV switchgear
LV switchgear
Common equipment
Process engineering and auxiliary power supply converge
CM 104
Process automation
Process engineering
Automation bus for auxiliary power supply
equipment
MV switchgear
LV switchgear
Unit B
© Siemens AG 2008. All Rights Reserved.
Energy • Fossil Power Generation • Instrumentation, Controls & Electrical
E F IE 523 Torscher – E F IE 11 Ostertag / Technical / E3_ST1_IEC61850_d_V1-1
© Siemens AG 2009. All Rights Reserved.
26
Siemens Energy Sector
Instrumentation, Controls & Electrical
6. Abbreviations
CM104
SPPA-T3000 automation server
DIGSI
Engineering software for Siemens protection devices
ECS™
Embedded Component Services
EMC
Electromagnetic compatibility
IEC
International Electrotechnical Commission
GOOSE
Principle of communication for bay control devices in accordance with IEC 61850
(Generic Object Oriented Substation Event)
HV
High voltage
ICD
Intelligent Electronic Device Configuration Description
KKS
Kraftwerks-Kennzeichnungs-System (power plant identification system)
FO
Fiber-optic cable
ASD
Alarm sequence display in SPPA-T3000
MV
Medium voltage
LV
Low voltage
NTP
Network time protocol
R4
SPPA-T3000 Release 4
SCD
Substation Configuration Description
SIGRA
Evaluation tool for event and disturbance records
SIMOCODE
Intelligent field units for LV switchgear
SIPROTEC
Siemens device family for protection devices and bay controllers (MV and HV level)
SNMP protocol
Simple network management protocol
SPPA
Siemens Power Plant Automation
SPPA-E3000
Siemens Power Plant Automation - Electrical Solutions
SPPA-T3000
Siemens Power Plant Automation - DCS
27
© Siemens AG 2009. All Rights Reserved.
Siemens Energy Sector
Instrumentation, Controls & Electrical
Published by and Copyright © 2009
Siemens AG
Energy Sector
Freyeslebenstraße 1
91058 Erlangen
Germany
Siemens AG
Energy Sector
Fossil Power Generation
Instrumentation, Controls & Electrical
Siemensallee 84
76187 Karlsruhe
Germany
sppa-t3000.pg@siemens.com
www.siemens.com/sppa-t3000
E3-T3_DT1_IEC_Integration_TechDescr_e_V1-0
All Rights Reserved.
Subject to change without prior notice.
Printed on chlorine-free paper.
The trademarks and brand names used in
this document are the property of
Siemens AG or their associated companies
or the individual holder.
The information in this document contains
general descriptions of the technical options
available which do not always have to be
present in individual cases.
The required features should therefore be
specified in each individual case at the time
of closing the contract.
www.siemens.com/energy
© Siemens AG 2009. All Rights Reserved.
28