摘要
对于由基于30°等距脉冲触发换流器组成的特高压直流工程,需对其每极的2个12脉动换流器实施单独控制。该控制方式下易引起2个换流器的不平衡运行。在深入剖析特高压直流工程不平衡运行原因的基础上,提出基于电压调节和直流电流测量误差补偿相结合的控制策略,试验结果表明该控制策略可得到符合工程要求的稳态、暂态和动态结果。还从直流工程实践的观点,对特高压直流工程控制系统的一些重点问题,如控制系统的结构分层等进行了探讨。
The two 12-pulse UHVDC converters of each pole which are fired by 30° equidistant pulses need to be controlled individually. However, such a control mode may result in unbalanced operation of the two converters. On the basis of analyzing the reason causing the unbalanced operation of UHVDC project in depth, the authors propose a control strategy in which the voltage regulation is integrated with measured error compensation of DC current. Testing results show that adopting the proposed control strategy, the steady, transient and dynamic processes, which meet the requirement of the project, can be obtained. Several key problems of control system for UHVDC project, such as the hierarchical structure of control system, etc., are analyzed in the viewpoint of the practice of HVDC project.
出处
《电网技术》
EI
CSCD
北大核心
2006年第22期1-4,53,共5页
Power System Technology
关键词
特高压直流
控制系统
不平衡
分层
电压调节
UHVDC : control system
unbalance : hierarchical structure: voltage regulation
作者简介
陶瑜(1942-),女,教授级高级工程师。从事高压直流输电工程技术工作,E-mail:yutao@sgcc.com.cn;
马为民(1966-),男,博士后,从事高压直流输电工程技术工作。
马玉龙(1975-),男,博士,从事高压直流输电的仿真、设计工作。