ABB Relion 670 Series Applications Manual page 217
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1MRK 505 370-UUS Rev. K
IMagComp5, IMagComp30, IMagComp100
VMagComp5, VMagComp30, VMagComp100
IAngComp5, IAngComp30, IAngComp100
The angle compensation is given as difference between current and voltage angle errors.
The values are given for operating points 5, 30 and 100% of rated current/voltage. The values should be
available from instrument transformer test protocols.
7.10
Capacitor bank protection CBPGAPC
7.10.1
Identification
Capacitor bank protection
7.10.2
Application
Shunt capacitor banks (SCBs) are somewhat specific and different from other power system elements.
These specific features of SCB are briefly summarized in this section.
A capacitor unit is the building block used for SCB construction. The capacitor unit is made up of
individual capacitor elements, arranged in parallel or series connections. Capacitor elements normally
consist of aluminum foil, paper, or film-insulated cells immersed in a biodegradable insulating fluid and
are sealed in a metallic container. The internal discharge resistor is also integrated within the capacitor
unit in order to reduce trapped residual voltage after disconnection of the SCB from the power system.
Units are available in a variety of voltage ratings (240V to 25kV) and sizes (2.5kVAr to about 1000kVAr).
Capacitor unit can be designed with one or two bushings.
The high-voltage SCB is normally constructed using individual capacitor units connected in series and/or
parallel to obtain the required voltage and MVAr rating. Typically the neighboring capacitor units are
mounted in racks. Each rack must be insulated from the other by insulators because the can casing
within each rack are at a certain potential. Refer figure
Busbar protection REB670
Application manual
Function description
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IEC 61850
IEC 60617
identification
identification
CBPGAPC
-
115
for an example:
Current protection
GUID-41731DCF-840C-4717-9F51-899FC648F881 v2
GUID-67FC8DBF-4391-4562-A630-3F244CBB4A33 v2
ANSI/IEEE C37.2
device number
-
GUID-5EC8BAEC-9118-49EC-970C-43D6C416640A v1
GUID-BACAE67B-E64B-4963-B323-ECB0B69031B9 v2
Section 7
211
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