摘要
考虑直流受端弱交流系统条件下电网的稳定问题是当前的研究热点,静止无功补偿设备(static synchronous compensator,STATCOM)是改善弱交流系统运行特性的重要手段。从模型搭建和解析求解的角度研究STATCOM接入直流受端弱交流系统对电网稳定的影响机理。首先搭建含STATCOM的交直流系统模型,得到模型的唯一解析解;然后详细分析直流弱交流系统条件下考虑STATCOM接入与否对直流输电能力的影响机理,提出计及STATCOM接入的直流输送功率极限定量计算方法;最后,在PSCAD/EMTDC软件中搭建实际的直流受端弱交流系统模型,仿真验证了该文所做机理分析的正确性和有效性。
The stability issue considering the weak system connected to the inverter of high-voltage direct current transmission(HVDC)is a hot area of research.Static synchronous compensator(STATCOM)is an important method to improve the characteristic of the operation in weak AC systems.The mechanism of STATCOM affecting the weak system connected to the inverter of HVDC was studied based on modeling and analytic solution.Firstly,the DC and AC system model including STATCOM were built,and the unique solution of the model was solved.Then the mechanism of affecting the transmission capability of HVDC connected to weak AC system considering STATCOM or not was analyzed in detail.And the quantitative method of maximum DC power considering STATCOM was proposed.At last,the accuracy and effectiveness of the mechanism studied in this paper were verified in the simulations of one actual region model built in the PSCAD/EMTDC program.
作者
杨健
洪潮
周保荣
李鸿鑫
张野
张帆
李俊杰
孙鹏伟
YANG Jian;HONG Chao;ZHOU Baorong;LI Hongxin;ZHANG Ye;ZHANG Fan;LI Junjie;SUN Pengwei(State Key Laboratory of HVDC,Electric Power Research Institute,China Southern Power Grid,Guangzhou 510663,Guangdong Province,China)
出处
《中国电机工程学报》
EI
CSCD
北大核心
2019年第17期5005-5014,共10页
Proceedings of the CSEE
基金
南方电网科学研究院基础性前瞻性科技项目(SEPRI-K174009)~~
关键词
高压直流输电
弱系统
静止无功补偿设备
机理分析
建模
high-voltage direct current transmission(HVDC)
weak AC system
static synchronous compensator(STATCOM)
mechanism analysis
modeling
