变速抽水蓄能机组交流励磁系统功率拓扑结构浅析  

Topology Structure of AC-excitation Power System for Variable Speed Pumped-storage Unit

作　　者：施一峰[1] 高苏杰 常玉红 闫伟[1] 石祥建[1] 牟伟[1] 丁勇[1] SHI Yifeng1, GAO Sujie2, CHANG Yuhong2, YAN Wei1, SHI XiangJian1, MOU Wei1, DING Yong1(1. NR Electric Co., Ltd., Nanjing 211102, Jiangsu, China; 2. State Grid Xinyuan Company, Ltd., Beijing 100761, Chin)

机构地区：[1]南京南瑞继保电气有限公司,江苏南京211102 [2]国网新源控股有限公司,北京100761

出　　处：《水力发电》2018年第4期77-80,85,共5页Water Power

基　　金：国家电网公司科技项目(大型抽水蓄能机组灵活控制关键技术研究)

摘　　要：交流励磁可变速抽水蓄能机组是一种高效先进的调峰调频电源,可为电网安全稳定运行提供更有力的保障。针对交流励磁的原理及需求特点,对两电平、多电平、H桥级联、MMC以及交-交型变速器拓扑结构分别进行分析和适用性评价。结果表明,对于小容量交流励磁系统,可采用较为成熟的两电平变流器;而对于大容量交流励磁系统,则建议采用多电平变流器。The variable speed pumped-storage unit is an efficient and advanced power source for peaking and frequency regulation, and can provide more effective protection for the safe and stable operation of power grid. According to the principle of AC-excitation and the demand characteristics, the topology structures of two-level converter, multi-level converter, H-bridge cascade converter, MMC and AC-AC converter are analyzed and their applicability are evaluated respectively. The results show that the two-level converter can be used for small capacity AC-excitation system, while for large-capacity AC-excitation system, it is recommended to use multi-level converter.

关 键 词：变速抽水蓄能机组 交流励磁系统 大功率变流器 拓扑结构 

分 类 号：TV743[水利工程—水利水电工程]