Bridge capacitor bank design and operation

Journal Article · Mon Jan 01 04:00:00 EST 1996 · IEEE Transactions on Power Delivery

DOI:https://doi.org/10.1109/61.484020· OSTI ID:218304

Andrei, R G; Kaushik, R R; Reinaker, R W ^[1]

---

1. American Electric Power Service Corp., Columbus, OH (United States)

The concept of a bridge capacitor bank installation was presented in a previous paper. This paper discusses design and operation aspects related to the installation of a bridge capacitor bank in a substation. The 138/69 kV bridge capacitor bank installation presented is analyzed. An automatic switching control relay scheme for the same test installation is also discussed. The control scheme takes into account the dual effect a bridge capacitor installation has upon the electrical power system: it generates reactive power on the station 138 kV bus and transfers reactive power from the 69 kV to the 138 kV bus. An unbalance protection scheme preventing the cascading type failure of the capacitor units in the 138/69 kV bridge capacitor bank is also presented. An unbalance protection scheme for high voltage, large MVAr size bridge capacitor banks is also discussed. Simple analytical formulas with practical value to evaluate the magnitude and frequency of the voltage transients generated by the energization of a bridge capacitor bank are presented. Recorded switching transient magnitudes and frequencies are compared with calculated values.

• OSTI ID: 218304
• Report Number(s): CONF-950727--
• Journal Information: IEEE Transactions on Power Delivery, Journal Name: IEEE Transactions on Power Delivery Journal Issue: 1 Vol. 11; ISSN ITPDE5; ISSN 0885-8977
• Country of Publication: United States
• Language: English

Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
DESIGN
ELECTRIC BRIDGES
ELECTRICAL TRANSIENTS
EQUIPMENT PROTECTION DEVICES
POWER SUBSTATIONS