POWER FACTOR CORRECTION.
HARMONIC FILTERING.
MEDIUM AND HIGH VOLTAGE SOLUTIONS.
This document may be subject to changes.
Contact ARTECHE to confirm the characteristics and
availability of the products described here.
Moving together
CONTENTS
1.
Metal Enclosed Capacitor Banks and Harmonic Filters
2.
Rack Mount Capacitor Banks and Harmonic Filters
3.
Pole Mount Capacitor Banks
4.
Studies, Simulations and Technical Support
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Power Factor Correction. Harmonic Filtering. | Medium and High Voltage Solutions
1. METAL ENCLOSED
CAPACITOR BANKS AND
HARMONIC FILTERS
4
Power Factor Correction. Harmonic Filtering. | Medium and High Voltage Solutions
1. METAL ENCLOSED CAPACITOR BANKS AND HARMONIC FILTERS
CUSTOMIZED SOLUTIONS FOR A
WIDE RANGE OF USERS
Custom engineered solutions for both
utility and industrial applications, ARTECHE
capacitor systems and harmonic filters are
available in both pad mount or switchgear
style enclosures.
Switchgear style units are typically located
at the main service entrance of an industrial
facility and can be supplied as automatic
switching units to maintain desired power
factor and harmonics under changing load
conditions.
ARTECHE offers in addition, and depending
on the application, units with tuned or detuned
reactors to build up different solutions in order
to avoid resonance of the capacitors with the
system inductance, or to absorb one or several
particular harmonics.
Pad
mounted
systems
accommodate
underground distribution installations.
› Metal Enclosed
Systems.
Power Factor Correction. Harmonic Filtering. | Medium and High Voltage Solutions
5
1. METAL ENCLOSED CAPACITOR BANKS AND HARMONIC FILTERS
APPLICABLE STANDARDS
ARTECHE standard designs meet among
others, with the two main international
standards:
›
›
IEC 60871, IEC 60549.
IEEE STD 18 and CSA ratings.
› Metal Enclosed
Systems.
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Power Factor Correction. Harmonic Filtering. | Medium and High Voltage Solutions
1. METAL ENCLOSED CAPACITOR BANKS AND HARMONIC FILTERS
GENERAL DESCRIPTION
POWER CAPACITOR:
SWITCHING ELEMENTS:
ARTECHE supplies single phase or three
phase capacitors with stainless steel cases.
Capacitors are free of PCB’s and available in
powers from 50 up to 1.000 kVAr (individual
units). These capacitors can be either
externally fused or internally fused. Each unit
has a discharge resistor to reduce the voltage
between the terminals to 50 V in five minutes
or 75 V in ten minutes according to IEEE and
IEC standards respectively.
Switching elements are specially designed for
handling capacitive loads. ARTECHE offers
the best technical solution on project basis,
and supplies capacitor switches, contactors,
or circuit breakers depending on the specific
application.
TUNING REACTORS:
Tuning reactors are added in harmonic filters.
These reactors are generally iron core type
and are an integral part of the capacitor bank.
As an option, ARTECHE is able to supply air
core reactors which are enclosed separately
upon request.
INRUSH REACTORS:
Inrush reactors are necessary in the capacitor
banks for the purpose of limiting inrush
currents and back-to-back switching events.
CURRENT LIMITING FUSES:
These are provided for the protection of short
circuit currents, and internal faults in the
capacitors.
SURGE ARRESTERS:
Surge Arresters protect the capacitor banks
from voltage surges and lightning.
ZERO VOLTAGE CONTROL:
Available with capacitor switches, this type of
technology is not a standard design and must
be requested specifically. Capacitor switching
phenomena are minimized.
GROUNDING SWITCH:
The grounding switch ensures that capacitors
are fully discharged for maintenance.
CONTROL AND PROTECTION SYSTEM:
The main protections are neutral unbalance
and overcurrent protection. Other schemes
are available.
INSTRUMENT TRANSFORMERS:
Automatic capacitor banks require voltage
and current signals which may be provided
by the customer or obtained from the bus
through instrument transformers already
in place. Current transformers or voltage
transformers can be supplied for neutral
unbalance protection depending on the bank
connection type.
› Power Factor
Correction Capacitors.
Power Factor Correction. Harmonic Filtering. | Medium and High Voltage Solutions
7
1. METAL ENCLOSED CAPACITOR BANKS AND HARMONIC FILTERS
TECHNICAL CHARACTERISTICS
CONTENTS
Capacity
ANY kVAr rating
Voltage
Up to 38 kV
Frequency
50 Hz or 60 Hz
Fixed
Type
Automatic
Automatic Multistep
Service
Indoor or Outdoor
Enclosure
IP or NEMA
Temperature range
-30 to 50°C (Other temperatures available upon request)
Tuned frequency
According to harmonic distortion. Any tuned frequency.
› Metal Enclosed
Systems.
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Power Factor Correction. Harmonic Filtering. | Medium and High Voltage Solutions
ARTECHE POWER QUALITY
Customized solutions.
Power Factor Correction. Harmonic Filtering. | Medium and High Voltage Solutions
9
2. RACK MOUNT CAPACITOR
BANKS AND HARMONIC
FILTERS
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Power Factor Correction. Harmonic Filtering. | Medium and High Voltage Solutions
2. RACK MOUNT CAPACITOR BANKS AND HARMONIC FILTERS
SUBSTATION SUITABILITY
Capacitor systems for reactive compensation
and harmonic filter systems are available in
rack mount configurations for use in either
covered or open construction substation
applications. Rack mounts are manufactured
with hot zinc immersion galvanized steel or
aluminium.
Capacitor banks and harmonic filters are
shunt connected to the system to provide
reactive power. In the case of harmonic filters,
the banks are tuned or detuned to reduce or
eliminate harmonics that may be present in
the system.
Banks can be manufactured in various VAr
and Voltage requirements. The banks can
be either fixed or switched with protection
options.
ARTECHE OFFER
ARTECHE capacitor banks and harmonic
filters can be manufactured in a variety of
voltage or reactive power requirements.
ARTECHE can offer different protection
schemes. For example:
›
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›
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Floating Wye.
ARTECHE PQ offers over
20 years’’ exp
periience
in the design and
manuffactture off reacttive
power compensation and
harmonic filtering systems
for medium and high
voltage networks.
Double Wye.
Fuseless.
H configuration.
Voltage differential.
Grounded Wye.
Delta.
Internally Fused.
... or any configuration.
APPLICABLE STANDARDS
ARTECHE standard designs meet among
others, with the two main international
standards:
›
›
IEC 60871, IEC 60549.
IEEE STD 18 and CSA ratings.
Power Factor Correction. Harmonic Filtering. | Medium and High Voltage Solutions
11
2. RACK MOUNT CAPACITOR BANKS AND HARMONIC FILTERS
GENERAL DESCRIPTION
CAPACITORS:
ZERO VOLTAGE CONTROL:
ARTECHE supplies single phase or three
phase capacitors with stainless steel cases.
Capacitors are free of PCB’s and available in
powers from 50 up to 1.000 kVAr (individual
units). These capacitors can be either
externally fused, internally fused, or fuseless.
Each unit has a discharge resistor to reduce
the voltage between the terminals to 50 V in
five minutes or 75 V in ten minutes according
to IEEE and IEC standards respectively.
Available with capacitor switches, this type of
equipment is not a standard design and must
be requested specifically. Capacitor switching
phenomena are minimized.
CAPACITOR FUSING:
Galvanized steel or aluminium
In case of externally fused capacitors, fuses
used are expulsion type.
INSTRUMENT TRANSFORMERS:
TUNING REACTORS:
For Harmonic filters tuning reactors are
added. ARTECHE supplies reactors with iron
core or air core as per customer request.
INRUSH REACTORS:
Are necessary in the capacitor banks for the
purpose of limiting inrush currents and backto-back switching events..
SWITCHING ELEMENTS:
Switching elements are specially designed for
handling capacitive loads. ARTECHE offers
the best technical solution on project basis,
and supplies capacitor switches, contactors,
or circuit breakers depending on the specific
application.
INSULATORS:
Porcelain station post insulators meet IEC or
ANSI standards.
STRUCTURE:
Automatic capacitor banks require voltage
and current signals which may be provided
by the customer or obtained from the bus
through instrument transformers already
in place. Current transformers or voltage
transformers can be supplied for neutral
unbalance protection depending on the bank
connection type.
GROUNDING SWITCH:
The grounding switch ensures that capacitors
are fully discharged for maintenance.
CONTROL CABINET:
Used for capacitor banks or harmonic filters
with automatic control. Can be either outdoor
or indoor assembled. The main protections are
neutral unbalance and overcurrent protection.
Other schemes are available.
CONTROL AND PROTECTION RELAYS:
Multifunction relay, overcurrent, voltage,
neutral, and automatic control functions are
available.
SURGE ARRESTERS:
Surge Arresters protect the capacitor banks
from voltage surges and lightning.
CUT OUTS:
Power main fuses can be used as disconnecting
switches with manual operation.
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Power Factor Correction. Harmonic Filtering. | Medium and High Voltage Solutions
2. RACK MOUNT CAPACITOR BANKS AND HARMONIC FILTERS
TECHNICAL CHARACTERISTICS
CONTENTS
Capacity
ANY kVAr rating
Voltage
Up to 245 kV
Frequency
50 Hz or 60 Hz
Type
Fixed or Automatic
Internally fused
Capacitor type
Externally fused
Fuseless
Service
Outdoor
Structure
Galvanized Iron structure or aluminium
Temperature range
-30 to 50°C (Other temperatures available upon request)
Tuned frequency
According to harmonic distortion. Any tuned frequency.
› Rack Mount Capacitor
Banks.
Power Factor Correction. Harmonic Filtering. | Medium and High Voltage Solutions
13
3. POLE MOUNT CAPACITOR
BANKS
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Power Factor Correction. Harmonic Filtering. | Medium and High Voltage Solutions
3. POLE MOUNT CAPACITOR BANKS
GENERAL DESCRIPTION
The most effective way of reactive power
compensation is achieved when the capacitor
banks are distributed over the entire electrical
system, the same way inductive loads are
distributed. The reactive compensation
reduces
the
load
on
the
electrical
infrastructure installed upstream. Reactive
power compensating as close as possible to
the load leads to a better overall performance.
Light, compact and easy to install, the
structure that supports the equipment
represents an important advantage when few
space is available.
ARTECHE pole mounted capacitor banks
have minimal maintenance requirements.
ARTECHE offers a full range of pole mounted
solutions to improve power factor, reduce
heat, or improve the system voltage profile.
Distribution systems typically carry energy in
high voltage levels in order to avoid system
losses. However, the lower the voltage and
the greater the length, more suitable is the
use of intermediate capacitor banks in the
distribution system to restore or maintain
the voltage level and to compensate reactive
power. ARTECHE pole mounted capacitor
banks meet in a simple, reliable and accessible
way, the reactive power compensation and
voltage level support needs in distribution
lines.
Power Factor Correction. Harmonic Filtering. | Medium and High Voltage Solutions
15
3. POLE MOUNT CAPACITOR BANKS
TECHNICAL CHARACTERISTICS
CONTENTS
Frequency
50/60 Hz
Type
Automatic / Fixed
Capacities
from 150 kVAr to 1.200 kVAr as standard
Voltage
Up to 38 kV
Wye
Connection
Floating Wye
Delta
Local
Control
Remote
Communication
Radio
› Pole Mount Capacitor
Banks.
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Power Factor Correction. Harmonic Filtering. | Medium and High Voltage Solutions
ARTECHE POWER QUALITY
Trust and reliability.
Power Factor Correction. Harmonic Filtering. | Medium and High Voltage Solutions
17
4. STUDIES, SIMULATIONS AND
TECHNICAL SUPPORT
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Power Factor Correction. Harmonic Filtering. | Medium and High Voltage Solutions
4. STUDIES, SIMULATIONS AND TECHNICAL SUPPORT
GENERAL DESCRIPTION
ARTECHE offers all necessary support to
customers to provide the best solution and
equipment depending on the requirements of
the system.
Our engineering team performs electrical
studies simulating both the steady state and
transient conditions, so that the best solution
in terms of reactive power compensation and
harmonics cancellation can be designed for
each individual project.
ARTECHE has the most reliable software and
modelling tools, such as PSS/E, DigSilent,
EMTP-AT, as well as our own developed and
validated programs.
Among others, the following studies can be
performed:
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Protective-device coordination studies.
Short circuit analysis.
Reliability studies.
Switching transient studies.
Load flow studies.
ARTECHE has worldwide experience in
analysing the integration of renewable
energies into electrical networks, particularly
in the wind power sector:
GRID CODE VALIDATION
Simulation of complete wind farm (WTGs,
transformers and electrical lines) to perform:
›
Power flow analyses to determine electrical
losses and voltage variations at the Point
of Common Coupling (PCC) for different
WTG power generation set points and
power factors.
›
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P-Q curve generation.
TOTAL HARMONIC DISTORTION
›
THD calculation of the wind farm at the PCC
(current harmonics and voltage harmonics).
›
Analysis of external equipment needed
(active or passive filters).
Power quality analysis.
Harmonic analysis.
Voltage support studies.
Dynamic stability studies.
Voltage stability studies.
Analysis of external equipment needed
(voltage control ancillary services).
REACTIVE POWER GENERATION
›
Analysis of equipment needed to accomplish the power factor and voltage requirements of the installation at the PCC.
System impact studies.
Power Factor Correction. Harmonic Filtering. | Medium and High Voltage Solutions
19
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