含串补输电线路对继电保护的影响  

Influence of Series Compensation Transmission Line on Relay Protection

作　　者：刘可 杨文丽 汪凤月 罗敏 陈卉 赵金朝 保积秀 

机构地区：[1]国网青海省电力公司电力科学研究院,青海西宁810008

出　　处：《青海电力》2017年第4期35-38,共4页Qinghai Electric Power

摘　　要：通过理论分析,总结了串补装置对继电保护的影响,由于串补装置的接入会破坏输电线路阻抗的均匀性,对传统的继电保护将产生不利影响,严重时可能导致线路保护误动、拒动。通过原理分析和案例仿真,对发生电压反向、电流反向、方向继电器电压反向的条件进行了研究,针对串补问题,提出为保证极化电压不反向,采取带记忆的极化电压处理措施,保证正方向区内故障不拒动,正向故障时无论是电压反向还是低频分量造成电压的波动,由于采用了故障前的记忆电压,保护的动作特性不会受到影响。This paper summarizes the influence of series compensation device on relay protection by theoretical analysis. Because the access of series compensation device will destroy the uniformity of transmission line impedance, it will adversely affect the traditional relay protection. In severe cases, Protection of false move, refused to move. Through the principle analysis and case simulation, the conditions of voltage reverse, current reverse and direction relay voltage reversal are studied. In order to solve the series compensation problem, in order to ensure that the polarization voltage is not reversed, a polarization voltage with memory Measures to ensure that the positive direction of the region does not refuse to move the fault, the positive fault either voltage reverse or low frequency components caused by voltage fluctuations, due to the use of pre - fault memory voltage, the protection of the operating characteristics will not be affected.

关 键 词：串补 继电保护 输电线路 

分 类 号：TM47[电气工程—电器] TM773