针对电网3/2接线方式的设备风险在线辨识方法  

An On-line Identification of Equipment Risk for 3/2 Circuit Breaker Connections

作　　者：闪鑫[1] 戴则梅[1] 曹路[2] 汪德星[2] 

机构地区：[1]国电南瑞科技股份有限公司,江苏省南京市210061 [2]华东电力调度中心,上海市200002

出　　处：《电力系统自动化》2012年第1期112-115,共4页Automation of Electric Power Systems

基　　金：国家科技支撑计划资助项目(2008BAA13B06)~~

摘　　要：3/2接线方式由于具有供电可靠性高、运行调度灵活、倒闸操作方便等优点,在500kV厂站和部分220kV枢纽变电站得到了广泛应用。但是,该接线方式在一次设备或开关处于检修方式下时,某些故障模式可能会造成多个设备的停电。基于网络拓扑分析和保护动作逻辑的设备风险在线辨识技术,能够针对3/2接线方式下的一次设备或开关检修,自动识别出具有N-2以上停电设备的潜在故障模式,提醒调度运行人员;同时,结合静态安全分析、动态安全分析以及检修计划,实现大电网的设备风险在线防控。Owing to lots of advantages such as high reliability for power supply,flexible operating and dispatching mechanism and convenient transfer switching,etc,the 3/2 connection mode has been widely put into operation in 500 kV power stations and some 200 kV load-center substations.However,many equipments may be subjected to power cut caused by some fault modes as long as the connection mode is linked with primary equipment or the breaker under prophylactic overhaul.Using on-line identification technology of equipment risk based on network topology analysis and operation logic for protection,it is able to automatically identify the latent fault mode concerning N-2 or more power-failure equipments for primary equipment or breaker overhaul under 3/2 connection mode,and reminds relevant dispatching working staff.In the meantime,through the combination of static and dynamic security analysis and maintenance schedule,it will achieve on-line prevention and control mechanism for equipment risk in large power grid.

关 键 词：设备风险 风险防控 网络拓扑 保护逻辑 预想故障集 

分 类 号：TM645[电气工程—电力系统及自动化]