Approved by PSE
Faults & Events Recorder RZ-40
Faults Recording and Evaluation System ET-Expert
The essence of the problem
When operating electrical power engineering equipment a correct
decision-making process in fault and emergency conditions and their later
analysis is an essential factor. The realization of these essential functions requires
an application of recorders and IT systems supporting the operators' and experts'
work. While it is true that modern microprocessor equipment has its own faults
and events recorders, however, their functionality is limited with regard to
individual software, transmission protocols, time synchronization etc. Moreover,
the recorders integrated with electrical power engineering automatics equipment
fulfil only a supplementary function what limits their functionality by design.
Therefore on the objects where it is essential to make fast and correct running
decisions it is necessary to use independent, dedicated recording equipment
connected in a coherent recording system. The dedicated records increase
reliability of the data, have an optimally selected list of recorded signals, better
parameters and, what is very important, make these signals and runs that are
most interesting at a given moment accessible in a fast and unified manner. The
recording system provides the integrity of the data from various sources, their
arrangement and developed tools enabling a complete analysis of this
information on a joint time axis.
We are glad to inform you that the faults and events recorder RZ-40 have undergone successfully PSE approval tests as one of not numerous and has been classified in the
"A" class what means that it can be used on all the power stations
Faults and Events Recorder RZ-40
Fig.1 In-Out Faults Recorder Diagram
Fault recorder RZ-40
The faults recorder RZ-40 is a modern multiprocessor electronic device. It can
fulfil two basic roles as
·
·
Object
signals
a faults recorder which collects the data and makes them
accessible for the needs of electrical power engineering analysis
during fault and emergency conditions,
an independent system verifying the operation of protective
devices.
Binary
inputs
3 signals
relays
Voltage
inputs
ETHERNET
10/100-BASE/T
Current
inputs
RS-485
Power
supply
RS 232
Signalling
IT Network
- GPS receiver
- SCADA
- Events printer
- Modem
(RS 232 only)
Operator’s
panel
Local operation
RS 232
Local PC
New features of RZ-40
Fig. 2 Continuous recording idea from RAM memory to Compact Flash
Continous recording
A modified algorithm of access to the data is
a unique feature of RZ-40. The faults recorder is able to
move the data from the RAM buffer to the Compact Flash
memory continuously during faults recording at the same
time. Since the RAM size is no longer a recording
limitation therefore it is possible to achieve recording
times amounting to tens-of-seconds (60 sec. in standard).
Such a long recordings could be achieved even if
recordings concern 16 analogue inputs, 48 digital inputs
with sampling frequency of 8kHz.
RAM
Compact
Flash
Trends recorder
A built-in trends (network parameters) recorder is another new feature. In this case the sampling frequency is significantly less. A break between a record of individual samples can amount
from 5ms to 30s and recording times can amount to several hours. The trends recorder enables an analysis of phenomena which are developing in a longer time period.
Internal logic states recording
In case of the events recorder beside recording the changes of internal states of binary signals it is possible to record internal logic states (e.g. initiation of analogue triggers). It facilitates a
fast determination of the reason of triggering the faults recorder from the events list level.
Criterion values recording
It is possible to record virtual channels in which the values are estimated on the basis of recorded analogue parameters and predefined mathematic formulas (e.g. power, impedance,
frequency). Therefore an analysis of protective automatics operation becomes much easier.
Test mode
In this mode all the recorded data are stored and saved in a separate directory (folder) what distinguishes them from the signals saved during a “normal” operation of the recorder. The test
mode enables a fast and safe removal of the data gathered during trial runs.
Record locking
This function allows to lock the record of signals in situations that do not require to be recorded, keeping all the other functions of the device, such as e.g. current measures or, input signals
monitoring).
Software
A basic software (ET-Manager) is furnished together with the faults
recorder; this software allows the user to:
·
connect with many other faults recorders,,
·
view, enter and edit setpoints of the faults recorders,
·
present a current recorder status, input values as well as
estimated values,
·
load and save the recorded data on the disk,
·
perform ( zoom, trim) a graphic presentation and analysis of
recorded runs,
·
form virtual channels being functions of recorded real channels,
·
print, export the data to a text file.
Advantages
Main technical data
Recording:
Analogue runs
Events
Trends
Virtual values
Measuring inputs:
Modular structure
16 analogue and 36 digital channels in standard
Up to 18 analogue channels
Up to 120 digital channels
Triggering:
Up-slope of binary signal
Down-slope of binary signal
Exceedance of set instantaneous value
Change of effective value of analogue signal
Change of value of criterion signal
Triggering of other faults recorders
Remote triggering
Accuracy of the measurement:
Sampling frequency 2/4/8/16 kHz (fast)
Sampling frequency 1ms...30s (slow)
Parallel sampling in each channel
Resolution of the data record: 16 bit
Accuracy of the measurement 0,5%
Time synchronization: external pulses, GPS or time server NTP
Measuring range 40A/200A DC 30A/150A AC
Data storage and communication:
Internal RAM 2MB
Memory (disk Compact Flash) up to 2GB
Record for files in COMTRADE format
Communication ports: RS232, RS485, ETHERNET
Access to the data through FTP,
Communication protocols: MODBUS RTU, Ethernet
(EGD, TCP/IP)
·
wide selection of triggering criteria,
·
possibility to enter setpoints and visualization from the operational panel
·
low power consumption (low load for guaranteed power supply),
·
advanced, clear and easy-to-operate software,
·
galvanic separation of input signals,
·
constant component handling, wide measuring range,
·
adaptation of inputs to the level of object signals.
Faults Recording and Evaluation System ET-Expert based on
the faults recorder RZ-40 was awarded during the
International Power Industry Fair ENERGETAB 2008!
www.energotest.com.pl
Faults Recording and Evaluation System ET-Expert
The Faults Recording and Evaluation System ET-Expert is a culmination of long-term research and development works performed by Energotest within the issues connected with
recording and analysing fault and emergency phenomena in electrical systems. ET-Expert is a combination of:
·
modern faults and events recorder RZ-40
·
unique software packet, the only one on the Polish market, consisting of two modules ET-Analog and ET-History
Thanks to this combination a fast and precise record and analysis of fault conditions in electrical power engineering objects is possible. It is a key value of the recording system ETExpert that at the moment of failure or fault condition of electrical power engineering system the operator achieves precisely this information that is needed in a fast and convenient way.
The implementation of the system ET-Expert on a concrete electrical power engineering object requires naturally the execution of determined engineering tasks. The first important task includes
the preparation of project, in particular, the selection of analogue and binary parameters and values which need to be estimated and recorded. The record triggering criteria and start-up of the
whole system connected with entering corrections ensuring an optimal operation of recording system, faults and event analysis in the devices and electrical power engineering network of the
object. A schematic and functional structure of the system is illustrated in the figure below.
ET-Expert - The complex system idea.
System rejestracji i analiz ET-Expert
Object
Optimal
selection of
recorded values
Appropriate
selection of
record
triggering
Software layer
Physical layer
Modern
faults recorders RZ-40
Possibility to achive
the data from
other sourcers
Technical
support
communication
and record transfer
time
synchronization
at the level
50 m
s
Projects
Thanks to the software the system enables to download the records from many independent
devices to one central records database and their collective analysis. All the records,
overlapped in time, are located in a joint chart, regardless of the fact from which device they
come. The records are downloaded from the devices and saved in the records base
automatically. On the basis of the records, also automatically, a base of all input signals in the
system is formed. It is possible to group the signals according to the affiliation to the selected
objects and to search out in the records only these runs that come from an indicated object.
References:
·
Kêdzierzyn-Azoty 220kV Substation – PSE Po³udnie S.A.,
·
Boguchwa³a 220kV Substation – PSE Wschód S.A.,
·
Lubocza 220kV Substation – PSE Po³udnie S.A.,
·
Z¹bkowice 220kV Substation – PSE Zachód S.A.,
·
Siersza 220kV Substation – PSE Po³udnie S.A.,
·
Namys³ów 110kV Substation – TAURON Dystrybucja S.A.,
·
Krapkowice 110kV Substation – TAURON Dystrybucja S.A.,
·
Umuahia 132kV/332kV Substation – Nigeria,
·
110kV/6kV GST3, GST6, GST7 Substations in Arcelor Mittal Steelworks Kraków,
·
Opole Power Plant – power output of the units Nos. 1, 2, 3 and 4,
·
£agisza Power Plant – power output,
·
¯erañ Heat and Power Plant – 110kV substation, power output,
·
Siersza Power Plant – 110kV substation and power output of all units
Energotest Ltd.
Chorzowska 44B, 44-100 Gliwice
tel.: +48 32 270 45 18 ; fax: +48 32 270 45 17
sekretariat@energotest.com.pl
www.energotest.com.pl
Operator
Central
record base
Implementation
on the object
Multi-access
to the data
Advanced tools
for faults
processing:
ET-Analog
ET-History
Start-up
Basic features of the system ET-Expert:
·
all records are stored in one joint, refunded database,
·
possibility to make the data accessible to many users at the same time,
·
possibility to get the records from the faults recorder RZ-40 as well as from the other
sources (other faults recorders, protective devices),
·
information selection from the point of view of the analysed phenomenon and not
recorder location,
·
synchronization of recorded runs at the level of 50µs,
·
advanced options of information filtering,
·
advanced options of information integration and processing
Realization of turn-key system includes:
·
technical support,
·
project development,
·
delivery of devices,
·
assembly supervision,
·
Start-up,
·
personnel trainings,
·
guarantee and post-guarantee service.
System is dedicated for:
·
transmission and distribution lines of the National Power System,
·
power plants, heat and power plants
·
industrial plants