基于逆变侧定电压控制的HVDC系统稳态和暂态响应特性研究  

Transient and steady responses in HVDC system based on constant voltage control at inverter side

作　　者：刘颖 戴栋[1] 汪娟娟[1] 韩永霞[1] 李立浧[1] 傅闯 LIU Ying;DAI Dong;WANG Juanjuan;HAN Yongxia;LI Licheng;FU Chuang(School of Electric Power, South China University of Technology, Guangzhou 510641, China;Electric Power Research Institute, China Southern Power Grid Co., Ltd., Guangzhou 510080, China)

机构地区：[1]华南理工大学电力学院,广东广州510641 [2]南方电网科学研究院,广东广州510080

出　　处：《电力系统保护与控制》2017年第24期1-8,共8页Power System Protection and Control

基　　金：国家自然科学基金(51377061)~~

摘　　要：为测试逆变侧采用定电压控制和定关断角控制对直流输电系统稳态和暂态性能的影响,在CIGRE高压直流标准测试模型原有控制系统中增加了定电压控制模块,即整流侧采用定电流控制,逆变侧采用定电压、定电流和定关断角控制相互配合的控制方式。在PSCAD/EMTDC仿真平台中对其整流侧和逆变侧三相短路故障下的控制器特性进行了稳态及暂态仿真分析,并与相应的CIGRE标准模型暂态响应特性进行了对比。结果表明逆变侧增加定电压控制方式能够提高直流输电系统在交流故障扰动下的性能,减少换相失败的发生几率。To test the effects of constant voltage control and constant extinction angle control on HVDC steady and transient performance, the control system of CIGRE HVDC benchmark model is complemented by a voltage control module, i. e. a constant current control is used at rectifier side, while a coordination control method combining voltage control, constant current control and constant extinction angle control is employed at inverter side. Steady and transient characteristics of the controller under three-phase short circuit fault at both rectifier and inverter sides are analyzed by using PSCAD/EMTDC simulations. The results show that, in comparison with CIGRE HVDC benchmark model, adding constant voltage control at inverter side could enhance the performance of HVDC system under the fault of AC side and lower the risk of commutation failure.

关 键 词：HVDC CIGRE高压直流标准测试模型 定电压控制 换相失败 暂态响应 

分 类 号：TM721.1[电气工程—电力系统及自动化]