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The vacuum circuit breakers are used to switch shunt capacitors which are used as a reactive compensator. Due to capacitors' energy storage characteristic and asynchronous closing of vacuum circuit breakers, system will produce high overvoltage during switching off the shunt capacitors especially when a beaker is restriked. It's harmful to the insulation and lifecircle of the equipments and even threatens...
The shunt power capacitor is widely used in power system as the reactive power compensation. To estimate the internal hottest-spot temperature of a running power capacitor, it is put forward the calculate model of the hottest-spot temperature of the capacitor inner, which deals the hottest temperature of capacitor shell as the intermediate variable in the balance of heat change. In service, the dielectric...
As the power system is interconnected with HVDC transmission, the power oscillation with low frequency appears in the AC transmission lines with weak damping. Due to the existence of the low frequency oscillation (LFO), the transmission power of AC lines is limited and the system angle stability is affected. In this paper, the low frequency oscillation (LFO) phenomena are introduced. By using the...
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