新型叠加强励励磁回路的电磁暂态特性与励磁变压器容量分析  

Analysis on Electromagnetic Transient Characteristics of New- Type Superposed Forced Excitation Circuit and Excitation Transformer Capacity

作　　者：李顺[1] 刘念[1] 潘荣超[1] 黄大可[2] 李建[1] 王利来[1] 

机构地区：[1]四川大学电气信息学院,成都610065 [2]中国长江电力股份有限公司葛洲坝电厂,湖北宜昌443002

出　　处：《电测与仪表》2014年第11期50-55,共6页Electrical Measurement & Instrumentation

摘　　要：为了克服传统自并励励磁系统技术上的缺陷,介绍了一种新型叠加强励励磁方式,并研究了新型叠加强励励磁回路的电磁暂态特性,以及叠加强励励磁系统励磁变压器的容量问题。通过电磁暂态仿真,发现叠加强励可以使得励磁电压和励磁电流增大,并且励磁电压和励磁电流的响应速度很快。对三绕组励磁变压器和传统双绕组励磁变压器的容量分别进行了计算,计算结果表明,采用叠加强励三绕组励磁变压器可以减小励磁变压器的容量。To overcome technical flaws of traditional self - shunt excitation system, this paper introduces a new way of superposed forced excitation. The electromagnetic transient characteristics of the new - type excitation circuit and the calculation of the excitation transformer capacity are studied. Through the electromagnetic transient simulation, it is found that superposed forced excitation can increase excitation voltage and current with quick response speed. The capacity of three winding transformer and traditional double winding transformer is computed respectively. The calculation results show that the three winding transformer with superposed forced excitation can reduce excitation transformer capacity.

关 键 词：叠加强励 自并励系统 电磁暂态 励磁变压器容量 

分 类 号：TM407[电气工程—电器]