基于改进EEAC法的随机复杂多机系统的暂态稳定性分析

发布时间：2018-01-25 11:58

本文关键词： 随机微分方程暂态稳定改进EEAC 极限切除时间　出处：《电网技术》2017年04期 　论文类型：期刊论文

【摘要】：随着电力系统接入元件的多元化以及各种电力电子技术的应用,电力系统的不确定性程度越来越严重,随机稳定性问题越来越突出,传统的确定性暂态稳定分析方法受到了严峻的挑战。提出了一种适用于分析随机复杂多机系统暂态性稳定性的改进的扩展等面积方法。首先建立了多机系统的随机微分方程模型,其次通过同调分群将随机多机系统等值为随机单机无穷大系统,最后构造含It?积分的加减速面积,用Heun算法求解系统的极限切除时间。与基于蒙特卡洛原理的数值仿真方法进行了对比,验证了该方法的正确性和快速性,并应用该方法对典型10机系统的极限切除时间进行了测算。最后用概率和统计方法对不同随机干扰强度下的极限切除时间进行了测算和对比。
[Abstract]:With the diversification of power system access components and the application of various power electronic technologies, the uncertainty of power system becomes more and more serious, and the problem of stochastic stability becomes more and more prominent. The traditional deterministic transient stability analysis method is severely challenged. An improved extended equal area method is proposed to analyze the transient stability of stochastic complex multi-machine systems. Firstly, the follow-by of multi-machine systems is established. Machine differential equation model. Secondly, the stochastic multi-machine system is equated to a random single-machine infinite bus system by homology clustering. The acceleration and deceleration area of the integral is calculated by Heun algorithm, and compared with the numerical simulation method based on Monte Carlo principle, the correctness and rapidity of the method are verified. The limit excision time of a typical 10-machine system is calculated by using this method, and the limit excision time under different random interference intensity is calculated and compared by using probability and statistical methods.
【作者单位】：上海交通大学电子信息与电气工程学院;
【基金】：国家自然科学基金(61374155) 高等学校博士学科点专项科研基金(20130073110030)~~
【分类号】：TM712
【正文快照】： 用Heun算法求解系统的极限切除时间。与基于蒙特卡洛原理的数值仿真方法进行了对比,验证了该方法的正确性和快速性,并应用该方法对典型10机系统的极限切除时间进行了测算。最后用概率和统计方法对不同随机干扰强度下的极限切除时间进行了测算和对比。0引言电力系统稳定性受到

【相似文献】