特高压多端混合直流输电工程电子式电流互感器测量异常分析

Analysis of Abnormal Measurement of Electronic Current Transformer in UHV Multi-terminal Hybrid DC Transmission Project

通过研究昆柳龙直流输电工程的典型电子式电流互感器测量异常事件,分析不同测点的测量异常对直流控制保护系统的影响,以及电子式电流互感器出现测量异常的原因。最后介绍了昆柳龙直流工程目前针对电子式电流互感器测量异常的处置策略,对其他特高压直流工程电子式电流互感器测量异常处置具有参考意义。

By studying the typical abnormal measurement events of electronic current transformers in the Kunliulong UHVDC,the influence of abnormal measurement at different measuring points on DC control and protection system and the reason of abnormal measurement of electronic current transformer are analyzed.Finally,the current disposal strategy of Kunliulong DC engineering for the measurement abnormality of electronic current transformer is introduced,which has reference significance for the abnormal measurement of electronic current transformer in other UHVDC projects.