In order to study the influence of control cable distribution parameters on substation switchyard relay,the electromagnetic relay of 500 kV substation switchyard was selected as the research object to study the influence of control cable distribution parameters on its voltage.Based on the control cable distribution parameters,relay parameters and other conditions,the circuit model was constructed and theoretical and simulation analyses were carried out.The results show that when the relay is R model,its voltage waveform is only exponential decay waveform;when the relay is RL model,its voltage waveform is affected by the factors σ and k.It can be seen that the resistance and inductance of the relay and the distributed capacitance of the non-fault feeder have an impact on its voltage.
关键词
控制电缆/电磁继电器/分布参数/PSPICE软体/二次回路
Key words
control cable/electromagnetic relay/distributed parameter/PSPICE software/secondary circuit
维普
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