橡塑电缆串联谐振耐压试验中补偿电抗器的选择

Selection of Compensating Reactor in Series Resonance Voltage Endurance Test for Rubber Cable

介绍了橡塑电缆串联谐振耐压试验的基本原理,分析了补偿电抗器对试验回路谐振频率和品质因数的影响,提出了进行不同电容量电缆谐振耐压试验时应选择恰当的补偿电抗器组合方案的观点。并通过试验实例说明了在满足频率范围的要求下,适当选择补偿电抗器的组合方式,可以改变补偿电感量和等效有功电阻,从而能有效提高谐振品质因数,降低了大电容量电缆谐振耐压试验对电源及设备的容量需求。

Basic principle of rubber cable series resonance voltage endurance test is introduced. The effect of compensating reactor on resonance frequency and quality factor in the test loop is analyzed. It is brought out that appropriate compensating reactor should be selected in the resonance voltage endurance test for different capacity cable. It is shown in the example that the selection of appropriate compensating reactor constitute can change compensating inductance and equivalent resistance, improve resonance quality factor effectively, and decrease the capacity of power source and devices in the resonance voltage endurance test of large capacity cable.