高电压技术2012，Vol.38Issue(12)：3277-3283,7.
±800kV特高压直流输电控制保护系统分析
Discussion of ± 800 kV UHVDC Transmission Control and Protection System
摘要
Abstract
To explore the similarities and differences between the control and protections of ultra-high voltage direct current systems (UHVDC) and conventional high voltage direct current systems (HVDC}, the characteristics of UHVDC control and protection system is analyzed in detail. Firstly, taking the Xiangjiaba-Shanghai UHVDC project as an example, we introduced its control and protection framework, configuration features, and its similarities and differences compared with that of HVDC. Then, we analyzed the control algorithm changes in UHVDC, such as changes in the control algorithms of power compensation, valve control, online input and withdrawal strategy of converters, de-icing operation mode and so on. Finally, we discussed the converter transformer saturation protection and the final breaker protection principles which were developed based on HVDC protection, and described the specific protection functions of UHVDC. According to the analysis, the dual 12-pulse valve in series adopted in the UHVDC projects, and the bypass breakers added in the bus area of valve connecting in which UHVDC is different from HVDC in primary connections, as well as the higher protection standard for UHVDC, are the main reasons that cause the difference of UHVDC protection systems from HVI)C. A protection system DCCS00 is capable of controlling valves in series, enhancing the coordination of control and protection among valves, which will result in more flexibility and diversity of UHVDC operations. In the presented UHVDC protection system, a "Two out of three" protection principle and redundant eTDM buses are adopted in UHVDC, and the problem of main computer stalling is solved well, ensuring that the system has more overall reiiability.关键词
特高压直流（UHVDC）/控制保护/常规高压直流（HVDC）/阀组控制/融冰运行模式/三重化保护Key words
ultra high voltage direct current(UHVDC)/current(HVDC)/valve control/de-icing operation mode/ensuring that the system has more overall reliability. control and protection/conventional high voltage direct triple redundant protection分类
信息技术与安全科学引用本文复制引用
杨光亮,邰能灵,郑晓冬,朱云华..±800kV特高压直流输电控制保护系统分析[J].高电压技术,2012,38(12):3277-3283,7.基金项目
基金资助项目：国家自然科学基金（51177066）. （）
