摘要
针对农村小型水电站发电机普遍采用双绕组电抗分流自励恒压系统,在并网运行时易产生振荡或失磁甚至失步而解列现象.给并网运行带来困难的问题,提出可控两相零式电抗分流励磁系统。研究表明,该系统较原系统各项性能大为提高,能稳定并网运行,具有改造简单、成本低、并网运行可靠、安全性好等技术优势,是一种值得推荐的新励磁品种。
In view of the fact that the double-winding reactance shunt self-excited constant voltage system is commonly used in rural small hydropower stations,it is prone to oscillation,loss of magnetism or even out of step during the operation of grid connection,which brings difficulties to the operation of grid connection.Therefore,a new controllable twophase zero-type reactance shunt excitation system is proposed to solve the above problems.The test results show that the system is much better than the original system in terms of performance,and can be connected to the grid stably,which has technical advantages of simple transformation,low cost,reliable operation and good safety.Thus,it is a new excitation system worthy of recommendation.
作者
周小鸿
祁正栋
陈国平
ZHOU Xiao-hong;QI Zheng-dong;CHEN Guo-ping(Xinjiang University of Technology,Aksu 843000,China)
出处
《水电能源科学》
北大核心
2021年第2期175-178,共4页
Water Resources and Power
基金
新疆维吾尔自治区自然科学基金项目(2019D01C055)。
关键词
可控两相零式电抗分流励磁系统
小水电站
发电机
稳定并网运行
controllable two-phase zero-type reactance shunt excitation system
small hydropower station
generator
connected-grid stabile operation
