Research on DC Power Control Strategy for Mitigating Continuous Commutation Failure

被引：0
|
作者：
Tang Y. [1 ]
Zheng C. [1 ]
Lou B. [2 ]
Hua W. [2 ]
Wang L. [2 ]
机构：
[1] School of Electrical Engineering, Southeast University, Nanjing, 210096, Jiangsu Province
[2] Electric Power Research Institute, State Grid Zhejiang Electric Power Co., Ltd., Hangzhou, 310014, Zhejiang Province
来源：
Dianwang Jishu/Power System Technology | 2019年 / 43卷 / 10期
基金：
中国国家自然科学基金;
关键词：
Continuous commutation failure; Control strategy; DC transmission; Risk prejudgment;
D O I：
10.13335/j.1000-3673.pst.2019.0824
中图分类号：
学科分类号：
摘要：
Method suppressing continuous commutation failure is a vital issuefor hybrid AC/DC power systems. However, most existing literatures focus on DC control system and even converter topology, not able to meet the needs of control strategy for actual systems at present. Therefore, a DC power control strategy to cope with continuous commutation failure is proposed in this paper. Firstly, the reactive interaction characteristic of AC/DC system and the main cause of continuous commutation failure are analyzed, and a method for evaluating risk of continuous commutation failure based on critical voltage is proposed. In this control strategy, DC power is reduced or restored in real time in order to improve the reactive power demand and recovery characteristic of the DC system. Finally, the proposed strategy is verified with simulation based onstandard test system and actual system. Resultshows that the strategy can effectively mitigate the continuous commutation failure, and has fine engineering adaptability and application prospect. © 2019, Power System Technology Press. All right reserved.
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页码：3514 / 3522
页数：8
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