考虑无功补偿容量优化的多馈入直流落点选择方法  

Selection Method for Multi Infeed DC System Considering Reactive Power Compensation Capacity Optimization

作　　者：龙霏 李明[2] 林建熙 王新宝[2] 易杨 林城 付俊波[2] LONG Fei;LI Ming;LIN Jianxi;WANG Xinbao;YI Yang;LIN Cheng;FU Junbo(Guangdong Power Grid Corporation,Guangzhou 510060,China;Nanjing NARI Relays Electric Co.,Ltd.,Nanjing 211102,China)

机构地区：[1]广东电网有限责任公司电力调度控制中心,广州510060 [2]南京南瑞继保电气有限公司,南京211102

出　　处：《电力电容器与无功补偿》2018年第4期112-116,共5页Power Capacitor & Reactive Power Compensation

摘　　要：多馈入高压直流输电系统(line commutated converter based high voltage direct current,LCC-HVDC)的新增直流落点选择问题需要考虑多回直流间的交互作用影响。为兼顾电网稳定性与经济性,本文建立包括多馈入短路比(multi infeed short circuit ratio,MISCR)、直流换相失败风险以及系统抵御N-1故障所需的动态无功补偿容量的指标体系。在此基础上,采用归一化处理和线性加权法实现落点方案的比选。最后,结合乌东德直流工程,将本文提出的直流落点优选方案应用于实际算例。The selection of new addition of DC system for multi infeed LCC-HVDC transmission system needs to consider the interaction between multiple direct currents. For the consideration of both grid stability and economy,in this paper,the needed index system of dynamic reactive power compensation capacity including MISCR（multi-infeed short circuit ratio）,DC commutation failure risk and resistance of N-1 fault by the system is set up. On this basis, the comparison and selection of the HVDC system proposal is achieved by the use of normalization treatment and linear weighting. Finally,the optimization scheme proposed in this paper is used in actual example of Wudongde HVDC project.

关 键 词：多馈入直流 多馈入短路比(MISCR) 落点选择 无功补偿 

分 类 号：TM721.1[电气工程—电力系统及自动化]