电力系统保护与控制Issue(9)：1-6,6.
考虑机网协调的新型发电机失磁保护方案研究
New loss of excitation protection scheme based on coordinated optimization between generator and grid
摘要
Abstract
As large capacity units is playing an increasily important role, loss of excitation failure has become more and more dangerous to the power system stability. Especially when the power plants and grid are seperated, it is a main concern to guarantee the security operation of both generators and grid. This paper concentrates on the mal-operation or misoperation problems of loss of excitation protection, which happen frequently in system swings. Based on the different generator performances in the two scenarioes and different kinds of loss of excitation failures, three innovative criterions including voltage, reactive power and timer criterions are proposed. Further, a new loss of excitation protection scheme based on the presented criterions is designed, and the scheme parameters tuning method is also introduced. The computer simulation results show that the new scheme can accurately distinguish the phenomena of loss of excitation from power system swings, and shows the advantages of high action speed and high reliability. This work is suppoprted by National High Technology R&D Program of China (863 Program) (No. 2012AA050207), and National Natural Science Foundation of China (No. 51190101).关键词
失磁保护/系统振荡/电压判据/无功判据/时间判据/机网协调/计算机仿真Key words
loss of excitation protection/system swing/voltage criterion/reactive power criterion/timer criterion/coordinated optimization between generator and grid/computer simulation分类
信息技术与安全科学引用本文复制引用
陆秋瑜,徐飞,胡伟,张建坤,李淼,冯钢..考虑机网协调的新型发电机失磁保护方案研究[J].电力系统保护与控制,2013,(9):1-6,6.基金项目
国家高技术研究发展计划(863计划)(2012AA050207)；国家科技支撑计划(2011BAA01B02)；国家自然科学基金（51190101）；国家电网公司科技项目；湖北省电力公司和国电南瑞科技股份有限公司科技项目 （863计划）
