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| 摘要: |
| 由于光学电流互感器OCT(Optical Current Transducer)出现扰动而使交流滤波器差动保护跳闸事件,对OCT在电力系统现场运行中使用出现的问题进行了研究,结合换流站OCT数据采集原理分析了事故发生时的设备故障原因,从而得出3种解决方案,即修改接口板、信号传送板;提高定值,躲过导致故障的尖脉冲;以及通过修改软件,在软件中判断过滤掉尖脉冲。并根据实践找到各种方法的可行性,最终提出可靠的处理方案。 |
| 关键词: 光学电流互感器,交流滤波器,开关,跳闸 |
| DOI： |
| 分类号:TM452.93 |
| 基金项目: |
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| Issues and solutions of optical current transducer used in power system |
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ZHANG Yu-jiao CHENG Jiong
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| Abstract: |
| Because of disturbances of the OCT(Optical Current Transducer),the AC filter differential protection tripped improperly.Issues of the OCT application in power systems are researched,and the failure cause is analyzed combined with the OCT data acquisition principle in a converter station.Three solutions are achieved:the improvement of interface board and signal transmission board;the modification of settings to avoid the spike pulse leading to fault;the software enhancement to filter the spike pulse.Their feasibilities are discussed and a reliable scheme is presented. |
| Key words: optical current transducer,AC filter,breaker,trip |
