计及风电随机激励的电力系统暂态稳定分析

发布时间：2018-03-22 00:19

本文选题：风电　切入点：风电随机激励　出处：《电力自动化设备》2016年03期 　论文类型：期刊论文

【摘要】：为了探讨风电随机激励对电力系统暂态稳定的影响,提出一种基于随机微分理论对含风电电力系统进行建模和稳定分析的方法。首先将异步风机机械功率作为随机激励,在暂态过程中利用伊藤型随机微分方程对异步风机的转子运动方程进行建模,将传统的微分代数方程模型扩展成随机微分代数方程模型;然后针对新的模型,通过时域仿真进行求解,分析风电功率随机波动对电力系统暂态过程的影响。算例结果表明:相比于确定性和概率性暂态稳定分析方法,所提方法能够更好地揭示风电不确定性对电力系统暂态稳定性的影响。
[Abstract]:In order to investigate the influence of wind power random excitation on transient stability of power system, a method of modeling and stability analysis of wind power system with wind power system based on stochastic differential theory is proposed. Firstly, the mechanical power of asynchronous fan is taken as random excitation. In the transient process, Ito stochastic differential equation is used to model the rotor motion equation of the asynchronous fan, and the traditional differential algebraic equation model is extended to the stochastic differential algebraic equation model. The influence of random fluctuation of wind power on the transient process of power system is analyzed by time-domain simulation. The numerical results show that compared with deterministic and probabilistic transient stability analysis methods, The proposed method can better reveal the influence of wind power uncertainty on the transient stability of power system.
【作者单位】：四川大学电气信息学院;国网四川省电力公司电力经济研究院;
【基金】：国家自然科学基金资助项目(51261130472) 英国阿尔斯通公司国际合作项目(11H0207)~~
【分类号】：TM712;TM614

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