多直流落点系统分时多目标控制  

Time-sharing and Multi-target Control for Power System with Multiple HVDC Links

作　　者：赵睿[1] 李兴源[1] 王渝红[1] 刘天琪[1] 王曦[1] 陈强 

机构地区：[1]四川大学电气信息学院,四川成都610065 [2]中国石油西南油气田公司,四川遂宁629000

出　　处：《四川大学学报（工程科学版）》2013年第5期123-129,共7页Journal of Sichuan University (Engineering Science Edition)

基　　金：国家高技术研究发展计划资助项目(2011AA05A119);国家电网公司大电网重大专项资助项目(SGCC-MPLG001-027-2012)

摘　　要：针对多直流落点系统直流闭锁故障,提出分时多目标控制策略。该策略在监测机组滑差过零前,以最大限度减少发电机过剩动能为目标,同时提升多条直流有功功率;滑差过零后,以分配断面功率损失和提高系统阻尼为目标,通过同时降低多条直流有功提升量来平衡送受端系统功率,采用基于敏感点挖掘的的直流阻尼控制来提升后续摆阻尼。仿真结果表明,该策略显著提高"三华"电网直流闭锁故障后系统的暂态稳定性和动态稳定性。The mechanism of time-sharing and multi-target control for power system with multiple HVDC links was analyzed. Based on the proposed control scheme,the accelerating torque is decreased by multiple HVDC links power increment before the slip of monitored generator approaches zero,the unbalanced power is distributed reasonably after it,and the power oscillation is damped through proper HVDC modulation under HVDC block. The digital simulation of＂San-Hua＂power grid showed that the proposed control contributes to improving the first-swing stability and damping the subsequent power oscillation after the fault.

关 键 词：高压直流输电 分时多目标控制 阻尼控制 暂态稳定 

分 类 号：TM71[电气工程—电力系统及自动化]