基于定相增量法的消弧线圈新型调谐方法

A new tuning method of the arc-suppression coil based on the phasing increments

提出了一种基于定相增量法的消弧线圈新型调谐方法,对于消弧线圈并阻尼电阻接地的配电网,通过两次投切并联在消弧线圈两端的阻尼电阻,同时调节消弧线圈的电感量,保持调节前后零序电压的相位稳定,即可根据已知信息计算出系统的对地电容和对地电导的精确值。通过在MATLAB中建立仿真模型并进行仿真实验,验证了提出的新型调谐方法的正确性。这种调谐新方法操作简单,需要测量的数据较少,并且在预调式和随调式消弧线圈中均可使用。

A new tuning method is proposed for the arc-suppression coil based on the phasing increments.For the arc suppression coil and damping resistance in parallel grounded distribution networks, the grid-to-earth capacitance and resistance can be calculated accurately through switching the parallel damping resistor on double sides of arc-suppres-sion coil for twice times, as while as adjusting its inductance to stabilize the phase of the zero-sequence voltage.The simulation model is established and experiments are carried out in MATLAB to verify the correctness of this new tuning method.This tuning method is simple, measured with less data needed, and can be used in not only the follow-reso-nant arc-suppression coil but also the pre-resonant one.