Analysis and Identification on the Thevenin Equivalent Considering the Correlation of Source-grid-load

被引：0
|
作者：
Ye P. [1 ]
Han X. [1 ]
Pei Y. [1 ]
Zhang Y. [1 ]
机构：
[1] Key Laboratory of Power System Intelligent Dispatch and Control of Ministry of Education, Shandong University, Jinan, 250061, Shandong Province
来源：
Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | 2020年 / 40卷 / 09期
基金：
中国国家自然科学基金;
关键词：
Parameter analysis; Power system; Source-grid-load; Thevenin equivalent; Voltage stability;
D O I：
10.13334/j.0258-8013.pcsee.190585
中图分类号：
学科分类号：
摘要：
Black box-type Thevenin equivalent is difficult to calculate the correlation of source-grid-load, making it difficult to implement preventive control to improve voltage static stability. According to the node voltage equation, the influence of the power system on the voltage of the Thevenin equivalent bus was analyzed into three parts, namely the generation, the load and the coupling between the two, so that the correlation of source-grid-load were reflected. According to the Thevenin equivalent circuit, the equivalent potential and the equivalent impedance were decomposed, and the corresponding Thevenin equivalent circuit was given. Based on this, a method of identification of the Thevenin equivalent parameter based on the compensation method was proposed. Therefore, this method can not only evaluate the performance of static voltage stability, but also give the basis for the prevention control implementation strategy. The simulation results of the IEEE 118-bus system show that the method is effective and has good engineering application prospects with wide-area measurement. © 2020 Chin. Soc. for Elec. Eng.
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收藏
页码：2842 / 2853
页数：11
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