低电压等级线路配置纵联保护的探索与应用

Exploration and Application of Pilot Protection for Low Voltage Line

针对某电厂35 kV低电压等级线路保护存在的问题,从短路计算、保护配置、装置选型等进行了技术探讨,详细分析了保护装置改造的必要性,最终组织实施该线路保护改造,有效解决了该线路保护无灵敏度和速动性不能满足要求的问题,为存在类似问题的低电压等级线路配置纵联保护提供有益借鉴。

In view of the problems existing in the protection of 35 kV low voltage line in a power plant,the technical discussion is carried out from the aspects of short-circuit calculation,protection configuration,device selection,etc.,and the necessity of protection device transformation is analyzed in detail.Finally,the protection transformation of the line is organized and implemented,which effectively solves the problems that the line protection has no sensitivity and the rapidity can not meet the requirements,and provides a useful reference for the low voltage line with similar problems to configure pilot protection.