Transient stability analysis of stochastic complex multi-machine system based on improved extended equal-area criteria

被引：0

作者：

Huang T. ^{[1
]}

Wang J. ^{[1
]}

机构：

[1] School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Minhang District, Shanghai

来源：

Dianwang Jishu/Power System Technology | 2017年 / 41卷 / 04期

基金：

高等学校博士学科点专项科研基金; 中国国家自然科学基金;

关键词：

Critical clearing time; Improved EEAC; Stochastic differential equation; Transient stability;

D O I：

10.13335/j.1000-3673.pst.2016.1701

中图分类号：

学科分类号：

摘要：

With increasing diversification of power system and application of power electronic technology, uncertainty of power system becomes more and more serious, and traditional deterministic transient stability analysis methods encounter severe challenges. An improved extended equal-area criteria(EEAC) method is proposed for transient stability analysis of stochastic complex multi-machine systems in this paper. Firstly, a stochastic differential equation model of multi-machine systems is established. Thena stochastic multi-machine system equivalent to stochastic single machine infinite bus (SMIB) system is set up by swarming according to coherency. Finally, acceleration and deceleration area is constructed, and Heun algorithm is used to seek system critical clearing times (CCTs). Compared with numerical simulation based on Monte Carlo method, accuracy and effectiveness of the proposed method are verified. The method is applied to calculate CCTs of a typical 10 machine system. CCTsfor different stochastic disturbance intensitiesare compared comprehensivelywith probability and statistical methods. © 2017, Power System Technology Press. All right reserved.

引用

页码：1174 / 1180

页数：6

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