一起直流功率异常波动事件分析
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摘要
介绍了普侨直流系统发生的一起复杂直流功率异常波动事件。以事件发生现象为依据,结合故障录波和控制保护逻辑,对事件进行分析。指出功率异常波动原因为低压限流功能误动,低压限流误动原因为旁路开关合位信号上送异常。针对上述问题,提出了整改措施。
This article describes a complex DC power abnormal fluctuation event that occurs in the DC system of PuQiao. Based on the occurrence of events, combined with fault recording and control protection logic,the incident is analyzed. It is pointed out that the cause of the abnormal power fluctuation is the misoperation of the VDCL function, and the cause of the misoperation of the VDCL is the anomaly of the bypass switch closing signal.In response to the above problems, the rectification measures are put forward.
This article describes a complex DC power abnormal fluctuation event that occurs in the DC system of PuQiao. Based on the occurrence of events, combined with fault recording and control protection logic,the incident is analyzed. It is pointed out that the cause of the abnormal power fluctuation is the misoperation of the VDCL function, and the cause of the misoperation of the VDCL is the anomaly of the bypass switch closing signal.In response to the above problems, the rectification measures are put forward.
引文
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[3]张彪,王渝红,李兴源,等.改善直流系统恢复特性的VDCOL控制策略[J].华东电力,2014,42(5):0827-0832.
[4]赵婉君.高压直流输电工程技术[M].北京:中国电力出版,2010.
[5]张志朝,刘茂涛,徐攀腾,等.云广直流工程阀组旁路开关位置检测回路设计优化.南方电网技术,2011,5(6):25-28
[6]刘艳华.±800kV云广直流输电工程控制保护系统提高可靠性的措施[J].广东电力,2008,21(12):23-25.