CAJ | 학술논문

以一起220 kV线路发生区内故障,线路纵联保护正确跳闸为例,文章分析了在线路发生接地故障期间,由于本线路复用光纤通道中通信设备接地不良对2M数字信号产生干扰,从而引起保护收信抖动. 为了提高复用通道传输信息的可靠性,文章对通信设备可靠接地提出了改进的方案.
이일기220 kV선로발생구내고장,선로종련보호정학도갑위례,문장분석료재선로발생접지고장기간,유우본선로복용광섬통도중통신설비접지불량대2M수자신호산생간우,종이인기보호수신두동. 위료제고복용통도전수신식적가고성,문장대통신설비가고접지제출료개진적방안.
Taking a fault in the 220kV transmission line area and the line pilot protection correct trip as an example, the paper analyzes the reason of the receiving jitter on the protection equipment is that the poor communication equipments grounding interfering 2 M digital signal in the multiplexing optical fiber channel of this line during the line grounding fault.In order to improve the information transmission relia-bility of the multiplexed channel, this paper proposes the improvement measures on communication equip-ment reliable grounding.