加快换相失败恢复的模糊控制器设计  

Design a fuzzy controller for commutation failure rapid recovery

作　　者：胡欣[1] 李兴源[1] 胡楠[1] 

机构地区：[1]四川大学电气信息学院,成都610065

出　　处：《华东电力》2013年第3期571-574,共4页East China Electric Power

基　　金：国家自然科学基金重点项目(51037003);国家高技术研究发展计划(2011AA05A119);国家电网公司科技重大专项资助~~

摘　　要：通过分析判断换相失败发生的标准和从换相失败恢复的策略,设计了以熄弧角差值和差值变化率为输入,越前触发角为输出的模糊控制器,使其代替传统的PI控制器。仿真结果表明,所设计的模糊控制器能够有效防止后续换相失败的发生,加快系统换相失败后的恢复。Commutation failure is commutated voltage commutation valve in reverse before failed to complete the other phases of failure, is common in the high-voltage direct current transmission （HVDC） system dynamic fault, consecu- tive commutation failure will make the whole system performance deterioration or even collapse, so rapid recovery commutation failure in the DC transmission system is very important. This paper analyzes the judgment standard of the commutation failure occurred and to commutation failure recovery strategy, designed a fuzzy controller use the extinc- tion angle difference and the difference change rate as the input a, the trigger angle as the output, use this fuzzy con- troller instead traditional PI controller. Fuzzy controller design is verified by simulation can effectively prevent the oc- currence of subsequent commutation failure to speed up the recovery system commutation failure.

关 键 词：换相失败 模糊控制 高压直流 恢复策略 PSCAD 

分 类 号：TM721.1[电气工程—电力系统及自动化]