无功补偿装置在大型辅机启动中应用  

Application of reactive power compensator in large auxiliary startup

作　　者：牟旭涛[1] 李铭铭 

机构地区：[1]山东电力研究院电气所,山东济南250002 [2]山东中实易通集团有限公司,山东济南250002

出　　处：《电力自动化设备》2009年第9期148-150,共3页Electric Power Automation Equipment

摘　　要：某电厂的临时电源系统接入的是农网,在机组的大型辅机启动时,会产生冲击电流和电压跌落,对地方电网产生不利的影响。提出在电厂辅机启动中应用无功补偿及液组软启动的方案来消减产生的不利影响,该方案能将电机的启动电流限制在要求的范围内。阐述了无功补偿装置的现场布置、辅机启动前容量的确定、无功补偿的作用(可以提高功率因数、减小启动电流、延长设备寿命、改善系统运行电压)。The temporary power system of a power plant connects to the rural power network,the startup of its large auxiliaries causes current surge and voltage sag,bringing bad effect on power system. The reactive power compensation and fluid resistance soft startup are used to weaken the effect and restrict the starting current within the range required. The spot disposal of reactive power compensator,the determination of capacity before auxiliary startup and the functions of reactive power compensation（power factor enhancement,starting current limitation,service life extension and system voltage improvement） are presented.

关 键 词：电压跌落 无功补偿 辅机 电动给水泵 电厂 

分 类 号：TM714.3[电气工程—电力系统及自动化] TM621.7