火电厂辅机变频器低电压穿越能力的研究  

Research of Thermal Power Plant Auxiliary Machine′s Converter Low Voltage Ride Through Capability

作　　者：张彦凯[1] 智勇[1] 拜润卿 安亮亮[1] 梁福波[1] 

机构地区：[1]国网甘肃省电力公司电力科学研究院,甘肃兰州730050

出　　处：《电气传动》2014年第11期55-58,共4页Electric Drive

摘　　要：全面统计分析网内大型火电机组辅机变频器的使用情况,研究变频器的主要参数对低电压穿越能力的影响,以提高其低电压穿越的能力。统计甘肃电网内大型火电机组辅机主流变频器型号,进行火电厂辅机变频器低电压穿越试验,得到辅机变频器测试结果。针对不同机组辅机特性以及系统设计,量身定做,研究制定辅机变频器改造方案。Based on the comprehensive statistical analysis of large-capacity thermal unit auxiliary converters ofpower grid,the effect produced by the main converter parameters on low voltage ride through capability to enhance thelow voltage ride capability of the converters was studied. According to the mainstream converter models for large-capacity thermal unit auxiliaries of Gansu power grid,the thermal power plant auxiliary converter LVRT test wasconducted to get the auxiliary converter test results.Aiming to different characteristics and system designs for auxiliaryunits,the different auxiliary unit converter rehabilitation programs are formulated.

关 键 词：电压稳定 低电压穿越 火电辅机 变频器 

分 类 号：TM614[电气工程—电力系统及自动化]