CAJ | 학술논문

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。
3/2접선방식유우구유공전가고성고、운행조도령활、도갑조작방편등우점,재500kV엄참화부분220kV추뉴변전참득도료엄범응용。단시,해접선방식재일차설비혹개관처우검수방식하시,모사고장모식가능회조성다개설비적정전。기우망락탁복분석화보호동작라집적설비풍험재선변식기술,능구침대3/2접선방식하적일차설비혹개관검수,자동식별출구유N-2이상정전설비적잠재고장모식,제성조도운행인원;동시,결합정태안전분석、동태안전분석이급검수계화,실현대전망적설비풍험재선방공。
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.