电力系统随机小扰动区间稳定性分析  

Stochastic interval stability analysis of power systems under small random excitation

作　　者：朱志伟[1] 史慧革 张振 曹桂州 ZHU Zhiwei;SHI Huige;ZHANG Zhen;CAO Guizhou(School of Electrical Engineering,Zhengzhou University,Zhengzhou 450001,China;Nanyang Power Supply Company,He′nan Electric Power Company of State Grid,Nanyang 473000,China)

机构地区：[1]郑州大学电气工程学院,河南郑州450001 [2]国网河南省电力公司南阳供电公司,河南南阳473000

出　　处：《轻工学报》2021年第2期102-108,共7页Journal of Light Industry

基　　金：国家自然科学基金项目(61473265,61603345);河南省高校科技创新团队支持计划项目(17IRTSTHN013)。

摘　　要：通过建立含异步风力发电机组的电力系统随机不确定动态模型,基于随机微分方程、矩阵论等相关理论,给出系统依概率稳定定理,构造Lyapunov函数,并利用微分算子分析包含参数摄动的异步风力发电机组的随机小扰动区间稳定性.仿真结果验证了本文所提出的考虑参数摄动的电力系统依概率稳定定理的有效性.A stochastic uncertain dynamic model was put forward for power systems with asynchronous wind turbines.Based on the stochastic differential equation,matrix theory and other related theories,a Lyapunov function was constructed according to the probability stability theorem,and the stochastic small disturbance interval stability of the asynchronous wind turbine with parameter perturbation was analyzed by differential operator.Simulation results verified the validity of the proposed probabilistic stability theorem for power systems with parameter perturbation.

关 键 词：电力系统 随机激励 参数摄动 随机区间稳定 

分 类 号：TM711[电气工程—电力系统及自动化] TM712