关于某站无功控制限值调整导致滤波器切除异常原因分析和改进措施

Analysis and Improvement Measures of Abnormal Filter Removal Caused by Adjustment of Reactive Power Control limit of a Certain Station

文章对某直流工程无功控制逻辑进行了详细排查,并对参数不匹配问题进行了程序改进,大大提高了该特高压直流系统运行的可靠性。

On December 18,2017,during the on-site system debugging process of a converter station,during the reactive power control mode test,the tester manually adjusted the upper and lower limits of reactive power,so that the reactive power was over-restricted,and the reactive power was removed.The fi lter command,the rectifi er station and the inverter station all appear to continuously cut off two sets of AC fi lters and then input a set of AC fi lters.After the investigation,it is found that the abnormal cause is the delay parameter and AC fi lter in the reactive power control function.The opening time of the device does not match.In order to avoid the occurrence of similar events,the DC engineering reactive power control logic was investigated in detail,and the program improvement of the parameter mismatch problem was greatly improved,which greatly improved the reliability of the UHV DC system operation.