一种消弧装置补偿功能校验方法研究

Research on a Verification Method for Compensation Function of Arc-Suppression Devices

阐述了电网系统电容电流的测量方法,以及其在变电站10 kV母线应用中对消弧装置补偿功能的校验技术。通过分析电容电流的3种测量技术——最大中性点位移电压法、信号注入法和阻抗三角形法,结合变电站实际工况,提出了一种创新校验方法。这种校验方法通过构建模拟电路,施加已知电容和电压,利用消弧线圈控制装置测量电容电流,并与理论值比对,有效验证了测量精度与自动调档功能。经10所变电站实测验证,这种校验方法能准确识别补偿准确度低和档位切换异常问题,对保障电网安全运行具有重要意义。

This article elaborates on the measurement method of capacitive current in the power grid system and the verification technology for the compensation function of arc-suppression devices in the application of 10 kV busbars in substations.By analyzing three measurement techniques for capacitive current:maximum neutral point displacement voltage method,signal injection method,and impedance triangle method,combined with the actual working conditions of substations,an innovative verification method is proposed.This method constructs a simu-lated circuit,applies known capacitance and voltage,uses an arc-suppression coil control device to measure the ca-pacitance current,and compares it with the theoretical value,effectively verifying the measurement accuracy and au-tomatic gear shifting function Through actual testing and verification in 10 substations,this method can accurately identify issues such as low compensation accuracy and abnormal gear switching,which is of great significance for en-suring the safe operation of the power grid.