适用于离岸岛屿的多直流协同控制策略  

Collaborative Control Strategy of Mlti-DC System for Offshore Islands

作　　者：朱承治 吴海斌 赵文强[3] 俞翔 王柯[3] 肖建民[3] 陆翌 ZHU Chengzhi;WU Haibin;ZHAO Wenqiang;YU Xiang;WANG Ke;XIAO Jianmin;LU Yi(State Grid Zhejiang Electric Power Co. , Ltd. , Hangzhou 310000, China;State Grid Jiangsu Electric Power Co. , Ltd. , Changzhou Power Supply Branch, Changzhou 213003, Jiangsu Province, China;NR Electric Co. , Ltd. , Nanjing 211102, China;Electric Power Research Institute of State Grid Zhejiang Electric Power Co Hangzhou 310014. China)

机构地区：[1]国网浙江省电力有限公司,杭州市310000 [2]国网江苏省电力有限公司常州供电分公司,江苏省常州市213003 [3]南京南瑞继保电气有限公司,南京市211102 [4]国网浙江省电力有限公司电力科学研究院,杭州市310014

出　　处：《电力建设》2018年第2期76-84,共9页Electric Power Construction

基　　金：国网浙江省电力公司科技项目(5211ZS1500GB)

摘　　要：分析比较了应用于多直流协调运行的交流电压主从控制、交流电压下垂控制以及虚拟同步发电机控制的优缺点,针对嵊泗电网"大直流、小电网、弱受端、有调相机"的特点,提出了一种以附加频率控制和主从控制相结合的综合控制策略,该策略可以有效协调嵊泗电网的多直流系统孤岛运行。分析了芦嵊混合直流系统独立孤岛运行时存在的双极功率均衡问题,提出了双极混合直流系统孤岛协调运行控制策略,多种策略的相互配合有效保证了嵊泗电网的孤岛运行安全。最后通过仿真验证了所提控制策略的有效性。The advantages and disadvantages of master-slave control,droop control and virtual synchronous generator control applied in the multi-HVDC cooperation operation are analyzed and compared. In viewof the features of Shengsi power gird,namely the high capacity of the power transmitted by HVDC system,the small scale of the power grid and weak stability,and the existence of synchronous condenser, this paper proposes the integrated control strategy with the combination of additional frequency control and master-slave control,which can effectively coordinate the island operation of multi-DC system in Shengsi power grid. The bipolar power balance problems of independent islanded operation for the LuSheng hybrid-HVDC are analyzed,and a bipolar coordination control strategy for the Lu-Sheng hybrid-HVDC in islanded operation is proposed. The coordination of the proposed control strategies can effectively ensure the islanded security of Shengsi power gird. The effectiveness of the proposed control strategies is validated by simulation results.

关 键 词：离岸岛屿 柔性直流 混合直流 模块化多电平换流器 协同控制 

分 类 号：TM732[电气工程—电力系统及自动化]