Shunt Capacitor Energization with Vacuum Interrupters - A Possible Source of Overvoltage

Boehne, E. W.; Low, Siew Chun

doi:10.1109/tpas.1969.292536

Cited by 27 publications

(2 citation statements)

References 12 publications

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“…About 60% of all capacitor banks are switched up to 300 times a year, and an additional 30% are switched up to 700 times a year. Capacitor-switching transients have caused many problems for the past few years [8][9][10][11][12][13][14]. Among these problems, the capacitors bearing switching overvoltage may be the most direct and severe one.…”

Section: Introductionmentioning

confidence: 99%

Field Experiments on 10 kV Switching Shunt Capacitor Banks Using Ordinary and Phase-Controlled Vacuum Circuit Breakers

et al. 2016

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During the switching on/off of shunt capacitor banks in substations, vacuum circuit breakers (VCBs) are required to switch off or to switch on the capacitive current. Therefore, the VCBs have to be operated under a harsh condition to ensure the reliability of the equipment. This study presents a complete comparison study of ordinary and phase-controlled VCBs on switching 10 kV shunt capacitor banks. An analytical analysis for switching 10 kV shunt capacitor banks is presented on the basis of a reduced circuit with an ungrounded neutral. A phase selection strategy for VCBs to switch 10 kV shunt capacitor banks is proposed. Switching on current waveforms and switching off overvoltage waveforms with, and without, phase selection were measured and discussed by field experiments in a 110 kV substation in Chongqing, China. Results show that the operation of phase-controlled VCBs for 10 kV switching shunt capacitor banks is stable, and phase-controlled VCBs can be used to implement the 10 kV switching on/off shunt capacitor banks to limit the transient overvoltage and overcurrent. The values of overvoltage and inrush current using phase-controlled VCBs are all below those with ordinary VCBs.

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Section: Introductionmentioning

confidence: 99%

Field Experiments on 10 kV Switching Shunt Capacitor Banks Using Ordinary and Phase-Controlled Vacuum Circuit Breakers

et al. 2016

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“…This allowed high frequency response and pre-event information to be recorded. Figures 14,15,16,17,18, and 19 were recorded on the digital transient recorder.…”

mentioning

confidence: 99%

Reduction of capacitor switching transients by controlled closing

Brunke¹

2000

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The permanently installed syncronously switching •vacuum breaker. • •. .. .. .. . 45 24. An oscillographic record of bus voltages and phase currents during a single bank energization of the prototype installation. • • • • • 47 25. A plot illustrating the effects of ambient temperature on the timing accuracy ofthe switch during its first 2 years in service. • • • • • • • • • 48 26. Computer plot of the bus voltage as a function of time for the "single bank" case. Energization 4.17 ms from voltage zero • • • • • 56 27. Computer plot of the capcitor current as a function of time for the "single bank" case. Energization 4.17 ms from voltage zero •• 57 28. Computer plot of the bus voltage as a function of time for the "single bank" case. Energization 3.0 ms from voltage zero. 58 29. Computer plot of the capacitor current as a function of time for the "single bank" case. Energization 3.0 ms from voltage zero •. .. .. a a a 59 30. Computer plot of the bus voltage as a function of time for th "single bank" case. Energization

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Einfache Stromkreise

Dorsch¹,

Jacottet²

1974

Rüdenberg Elektrische Schaltvorgänge

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Shunt Capacitor Energization with Vacuum Interrupters - A Possible Source of Overvoltage

Cited by 27 publications

References 12 publications

Field Experiments on 10 kV Switching Shunt Capacitor Banks Using Ordinary and Phase-Controlled Vacuum Circuit Breakers

Field Experiments on 10 kV Switching Shunt Capacitor Banks Using Ordinary and Phase-Controlled Vacuum Circuit Breakers

Reduction of capacitor switching transients by controlled closing

Einfache Stromkreise

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