一种母联分相断路器操作拒分自动重合的测控装置  

Auto Rreclose Bay Control Unit for Busbar Coupler Split-Phase Circuit Breaker in the Case of Open Operation Failure

作　　者：刘永钢[1] 阚骁骢 刘东超[1] 朱何荣[1] 黄凯涛 LIU Yonggang;KAN Xiaocong;LIU Dongchao;ZHU Herong;HUANG Kaitao(NR Electric Co.,Ltd.,Nanjing Jiangsu 211102,China;Guangzhou Power Supply Bureau,State Grid Guangdong Electric Power Co.,Ltd.,Guangzhou Guangdong 510013,China)

机构地区：[1]南京南瑞继保电气有限公司,江苏南京211102 [2]广东电网有限责任公司广州供电局,广东广州510013

出　　处：《湖北电力》2022年第4期89-94,共6页Hubei Electric Power

基　　金：国家重点研发项目(项目编号:2020YFE0200400)。

摘　　要：针对母联分相断路器遥控分闸后可能出现某一相或者某两相拒分的情况,从而导致三相不一致发生。母联长期处于三相不一致状态时,可能导致母线上其他分支产生零序电流,进一步引起保护装置不正确动作。为解决由于操作母联断路器拒分而导致保护装置不正确动作的问题,提出了一种操作拒分后可以自动重合的测控装置。通过判三相不一致状态而实现重合闸的功能,使母联断路器恢复三相合位运行状态。方案在开入、开出回路上跟保护装置互相独立,同时对已有的遥控回路也互不影响。在变电站改造、间隔扩建等方面具有投资小、方案简单、适用性强等特点,具有很好的推广效应。One or two phases may refuse to split after remote switching of the busbar coupler split-phase circuit breaker,which results in pole discrepancy.When the busbar coupler is in the state of pole discrepancy for a long time,it may lead to zero-sequence current in other branches of the busbar,and further cause protection relays to be tripped incorrectly.In order to solve the problem that the protection device is not operating correctly due to the open operation failure of the busbar circuit breaker,this paper presents a bay control unit which can automatically reclose after open operation failure.The reclosing function is realized by the judgement of pole discrepancy status,and the busbar coupler circuit breaker is restored to close status.The input and output loop between bay control unit and protection relays are independent,and at the same time also have no effect on the existing remote-control circuit.The proposed scheme has the characteristics of small investment,simple solution and strong applicability in substation transformation,interval expansion and some other aspects,thus having a good popularization effect.

关 键 词：母联分相断路器 测控装置 操作拒分 三相不一致 自动重合 

分 类 号：TM561[电气工程—电器]