Suzhou Electric Appliance Research Institute
期刊号: CN32-1800/TM| ISSN1007-3175

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受端交流电网故障时多端柔性直流系统的功率再分配

来源:电工电气发布时间:2018-01-22 13:22 浏览次数:581
受端交流电网故障时多端柔性直流系统的功率再分配
 
高爱云1,朱林2,蔡泽祥2
(1 广东水利电力职业技术学院 电力系,广东 广州 510635;2 华南理工大学 电力学院,广东 广州 510640)
 
    摘 要:对多端柔性直流输电系统中受端交流侧发生故障时的功率再分配进行了研究。通过改变受端非故障侧电压下降控制特性的有功定值,可实现各受端在不过载的情况下的功率再分配。运用PSCAD软件建立了三端柔性直流输电系统模型并进行了仿真,仿真结果表明,提出的控制策略在交流电网故障时可实现功率再分配目标,并能很好地保证系统直流电压的稳定和功率的平衡。
    关键词:受端交流侧故障;功率再分配;电压下降控制;三端柔性直流输电系统
    中图分类号:TM721.1     文献标识码:A     文章编号:1007-3175(2018)01-0013-04
 
Power Redistribution of Multi-Terminal Flexible-HVDC System Under Alternating Current Network Fault of Receiving End
 
GAO Ai-yun1, ZHU Lin2, CAI Ze-xiang2
(1 Guangdong Technical College of Water Resources and Electric Engineering, Guangzhou 510635, China;
2 Electric Power College of South China University of Technology, Guangzhou 510640, China)
 
    Abstract: This paper researched on the power redistribution of multi-terminal flexible-HVDC system when the alternating current (AC) side of receiving end was failure. By changing the active power constant value of voltage droop control characteristic at non-fault side of receiving end, the receiving end under non overload could realize the power redistribution. The software PSCAD was used to build the three-terminal flexible-HVDC model and carried out simulation. The results show that the proposed control strategy can realize the objective of the power redistribution when the AC network is failure and can keep the stabilization of direct current (DC) voltage and the balance
of system power.
    Key words: alternating current side fault of receiving end; power redistribution; voltage droop control; three-terminal flexible-HVDC system
 
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