220 kV系统母线保护改造二次回路可靠性探讨分析  

Discussion and Analysis of Secondary Circuit Reliability in 220 kV System Bus Protection Transformation

作　　者：聂振勇 曲晓晖 NIE Zhenyong;QU Xiaohui(China Energy Corporation Hebei Guohua Cangdong Power Generation Co.,Ltd.,Cangdong,Hebei 061113,China)

机构地区：[1]国家能源集团河北国华沧东发电有限公司,河北沧东061113

出　　处：《东北电力技术》2021年第8期58-60,共3页Northeast Electric Power Technology

摘　　要：母线保护系统是继电保护设备中较为重要的一个系统,而母线保护的原理是采集各个支路的电流模拟量,模拟量回路接线正确性决定着母线保护设备的可靠性,尤其在继电保护设备的改造过程中,在保证TA回路不开路的前提下还应通过相应技术手段检测电流回路极性是否正确,跳闸回路是否正常方可投入正常运行。介绍了一种母线保护改造后相应二次回路接线正确性的验证方法。Bus protection system is an important system in relay protection equipment.The principle of bus protection is to collect the current analog quantity of each branch.The correctness of analog circuit wiring determines the reliability of bus protection equipment,especially in the process of relay protection equipment transformation.Under the premise of ensuring that the TA circuit is not open circuit,the current circuit pole should be detected by corresponding technical means.It mainly introduces a verification method of the correctness of the secondary circuit wiring after the transformation of bus protection.

关 键 词：母线保护 模拟量 开关量 二次回路 厂用电系统 

分 类 号：TM77[电气工程—电力系统及自动化]