Hierarchical power flow control strategy and algorithm for multi-terminal interconnected AC/DC distribution network

被引：0
|
作者：
Peng K. [1 ]
Xian R. [1 ]
Zhang X. [1 ]
Chen Y. [1 ]
Lu H. [2 ]
机构：
[1] College of Electrical and Electronic Engineering, Shandong University of Technology, Zibo
[2] Electric Power Research Institute of Yunnan Power Grid Co. Ltd., Kunming
来源：
Dianli Xitong Zidonghua/Automation of Electric Power Systems | 2016年 / 40卷 / 14期
关键词：
AC/DC distribution network; Droop control; Hierarchical control; Multi-terminal interconnected; Power flow calculation;
D O I：
10.7500/AEPS20151119004
中图分类号：
学科分类号：
摘要：
With the development of DC distribution system, the network structure and operation mode of traditional distribution system have greatly changed. The AC/DC hybrid distribution network will be dominant in the future and poses a new challenge to power flow control and the AC/DC hybrid algorithm. For this reason, a hierarchical power flow control strategy is proposed to carry out orderly voltage control. At the first layer, DC load sharing is realized by the bidirectional converter with droop control, and DC bus voltage is controlled according to the droop control curve, at the second layer, local voltage balance is regulated by the distributed generator, while at the third, regional voltage is controlled by the voltage regulator. Secondly, the Gauss-Newton hybrid algorithm is proposed according to the characteristics of the AC/DC hybrid distribution system to improve the convergence performance of the algorithm. Finally, the test results on a modified IEEE 123-bus system show the validity and correctness of the control strategy and algorithm proposed. © 2016 Automation of Electric Power Systems Press.
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页码：72 / 77
页数：5
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