超高压交直流输电系统隔离开关带电接入模式研究  

Electrifiedaccess mode of disconnector in extra high voltagealternating current/direct current transmission system

作　　者：安超印 张玉玲 AN Chaoyin;ZHANG Yuling(State Grid Henan Electric Power Company,Zhengzhou 450032,China;Henan Jiu Yu Bo Hui Ark Consulting Development Co.,Ltd.,Zhengzhou 450032,China)

机构地区：[1]国网河南省电力公司,河南郑州450032 [2]河南九域博慧方舟咨询发展有限公司,河南郑州450032

出　　处：《粘接》2022年第6期115-119,共5页Adhesion

摘　　要：为了建立安全稳定的智能化超高压交直流输电系统,基于超高压直流分层的接入模式对影响交直流系统换相的因素进行分析,提出换相失败情况下的预防协调控制方法,提升非故障层阀组抵御换相失败的能力。设计超高压隔离开关智能控制方案,基于传感器设计开关控制模块并接入到超高压开关智能组件柜中,设计的隔离开关具备监测、诊断、控制以及数据传输等功能。对设计的超高压交直流输电系统换相协调策略和智能化超高压开关进行测试,结果表明:采用换相协调策略后,线路1和线路2的总损耗分别降为0.0137、0.0130 pu,低于采用未改进换相方式的损耗量。超高压隔离开关系统对不同类型隔离开关状态的检测准确率在80%以上,误检率为15%。The study aims to establish a safe and stable intelligent Extra High Voltage(EHV)Alternating Current/Direct Current(AC/DC)transmission system.First,based on the hierarchical access mode of EHV DC,the factors affecting the commutation of AC/DC system are analysed,and preventive and coordinated control method in case of commutation failure is proposed to enhance the ability of non-fault layer valve group to resist commutation failure.Second,the intelligent control scheme of EHV disconnector is designed.The switch control module is designed based on sensors and connected to the intelligent component cabinet of EHV switch.The designed disconnector has the functions of monitoring,diagnosis,control,and data transmission.Finally,the commutation coordination strategy and intelligent EHV switch of EHV AC/DC transmission system are tested.The experimental results show that the total loss of line 1 and line 2 is reduced to 0.0137,0.0130 pu after adopting commutation coordination strategy,which is lower than that without improved commutation.The detection accuracy of different types of disconnectors is more than 80%,and the false detection rate is 15%.

关 键 词：超高压隔离开关 交直流输电系统 智能控制器 输电系统换相协调控制 

分 类 号：TM7[电气工程—电力系统及自动化]