Power flow algorithm for VSC-HVDC AC/DC system based on fuzzy drop control

被引：0
|
作者：
Xu J. [1 ]
Xu Z. [1 ]
Tong C. [1 ]
机构：
[1] State Grid Jiangxi Electric Power Research Institute, Nanchang
来源：
Dianli Xitong Baohu yu Kongzhi/Power System Protection and Control | 2019年 / 47卷 / 20期
关键词：
AC/DC network; Droop control; Fuzzy inference; Power flow; Voltage source converter;
D O I：
10.19783/j.cnki.pspc.181513
中图分类号：
学科分类号：
摘要：
Aiming at the problem that traditional droop control method can not adjust the droop control coefficient according to the variation of voltage and power deviation, a method of using fuzzy reasoning to change the droop control coefficient is proposed. On the basis of analyzing the mathematical model and control strategy of VSC converter station, the control characteristics of AC and DC nodes when VSC adopts droop control strategy are considered and the calculation process of power flow model of VSC-HVDC system is determined based on the theory of fuzzy droop. Also, an improved power flow algorithm of fuzzy droop control for VSC-HVDC system is proposed, which adjusts the deviation between DC voltage and active power of VSC. Finally, the numerical example shows that the proposed fuzzy droop control algorithm can reduce the power and voltage deviation in the iterative process of 4~5 times DC system, and has stronger convergence and feasibility. © 2019, Power System Protection and Control Press. All right reserved.
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页码：50 / 57
页数：7
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