800kV特高压直流系统换流器控制.pdf

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32 9 高电压技术 Vol. 32 No. 9
2006 年 9 月 High Voltage Engineering Sep. 2006 · 71 ·
± 800 kV 特高压直流系统换流器控制
马为民
(北京网联直流工程技术公司,北京 100005)
摘要: ± 800 kV 特高压直流系统采用双 12 脉动换流器串联的接线方式,为研究对其实施有效控制的方法,采用
EM TDC 仿真分析了双串联换流器的基本控制原理、投切单一换流器和其它各种故障后换流器的控制特性。结果
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表明,双换流器串联的直流系统仍可采用整流侧换流器控制直流电流,逆变侧换流器控制直流电压的基本运行控
制策略。当对换流器独立控制时,加入误差消除环节能有效控制发散现象,保证特高压直流系统的稳定运行和各
种故障下的运行性能。
关键词: 特高压; 直流; 换流器; 控制; 稳定运行
中图分类号: TM721. 1 文献标识码: A 文章编号: 1003 6520 (2006) 09 0071 04
Converter Control in 800 kV DC Transmission System
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MA Weimin
(Beijing Wanglian HVDC Engineering Technology Co. , Ltd , Beijing 100005 , China)
Abstract : Two 12 pulse converters in series will be applied in the recent ± 800kV DC transmission projects in China.
The basic control strategy for the double converters in series has been illustrated and analyzed in this paper. As
many other HVDC systems , the basic operation control strategy of ± 800kV DC transmission system is that DC cur
rent is controlled by two rectifiers simultaneously during normal operation while DC voltage is controlled by two in
verters themselves or OL TC of inverters. The simulation results by EM TDC program demonstrate that independent
control for each converter without munication between them on this strategy can insure the performance of
the system to operate symmetrically during s