大型发电机组整套启动过程中继电保护策略探讨  

Discussion on Relay Protection Strategy During Integrated Starting of Large Generating Units

作　　者：牛利涛 肖桂霞 兀鹏越 何信林 

机构地区：[1]西安热工研究院有限责任公司,西安市710032 [2]华能陕西靖边电力有限公司,陕西省榆林市718500

出　　处：《电力建设》2013年第7期89-94,共6页Electric Power Construction

摘　　要：大型发电机组整套启动电气总试验过程中,发电机-主变压器组系统的工况与正常运行时不尽相同。基于实际工程发电机组整套启动电气试验的全过程,论述了不同试验阶段的特点。针对整套启动中遇到的问题,提出了继电保护在电气总启动中应该采取的策略,包括:励磁变压器临时试验电源的定值设置依据、同期定值的调整原理、保护的投退原则等。这些策略可供大型发电机启动调试借鉴。The condition of generator-transformer system in electrical tests during integrated starting is different from that in normal operation. The characteristics of different test stages were discussed based on the electrical test process in integrated starting of practical generating units. Aimed to the problems occurred in integrated starting process, some relay protection strategies were suggested for electric start-up, such as fixed value setting basis of temporary power supply of excitation transformer, adjustment principle of setting value used for generator synchronization, protection switching principle. These strategies will provide references for the integrated starting of large generating units.

关 键 词：整套启动 同期 定值计算 短路试验 空载试验 

分 类 号：TM62[电气工程—电力系统及自动化]