Stochastic Small-Signal Stability of Power Systems With Wind Power Generation

被引：74
作者：
Yuan, Bo [1 ]
Zhou, Ming [1 ]
Li, Gengyin [1 ]
Zhang, Xiao-Ping [2 ]
机构：
[1] North China Elect Power Univ, State Key Lab Alternate Elect Power Syst Renewabl, Beijing 102206, Peoples R China
[2] Univ Birmingham, Sch Elect Elect & Comp Engn, Birmingham B15 2TT, W Midlands, England
来源：
IEEE TRANSACTIONS ON POWER SYSTEMS | 2015年 / 30卷 / 04期
基金：
国家高技术研究发展计划(863计划); 中国国家自然科学基金;
关键词：
Asynchronous wind turbine; Ito formula; Ito integral; stochastic differential equation (SDE); stochastic mechanical power; stochastic small-signal stability; TURBINE;
D O I：
10.1109/TPWRS.2014.2353014
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Wind power has had a significant impact on power system stability due to its stochastic nature. In this paper, the impact of stochastic excitation on power-system small-signal stability is investigated based on stochastic differential equation (SDE) theory. The mechanical power input of an asynchronous wind turbine is considered as a stochastic excitation to the system and the system state equation is formulated based on SDE. The mean stability and mean square stability of such a system are demonstrated, and the steady-state expectation and covariance of the system state variables are obtained by mathematical deduction. The numerical simulations are presented on a two-machine infinite bus system and the IEEE 145-bus test system.
引用
收藏
页码：1680 / 1689
页数：10
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