电力系统及其自动化学报2018，Vol.30Issue(6)：10-15,6.DOI:10.3969/j.issn.1003-8930.2018.06.002
应用潮流方程简化网络计算的电力系统小干扰稳定分析
Small Signal Stability Analysis of Power System with Simplified Network Computing Using Power Flow Equations
摘要
Abstract
In the small signal stability method for power system,nodal voltage equation is usually used to formulate the interface equation of power system and dynamic components. Considering the large calculation amount in the modifica?tion of state matrix when dealing with the system whose load is described by a voltage static characteristic model while the operation mode is constantly changing,a new method is proposed in this paper,in which power flow equations are adopted in the interface equation to carry out small signal stability analysis. Based on the linear differential equation of the original dynamic components,injection power is used as an algebraic vector,and a mathematical system model for the small signal stability analysis is established with the combination of linearized power flow equations. In this way,a new state matrix for the whole system is obtained together with its modification with respect to the load with voltage stat?ic characteristics. Analyses show that the new state matrix has the characteristics of contract network,and its modifica?tion formula has the advantages of simplified network computing. Numerical simulations verified the proposed method.关键词
小干扰稳定分析/接口方程/潮流方程/负荷模型/简化网络计算Key words
small signal stability analysis/interface equation/power flow equation/load model/simplified network computing分类
信息技术与安全科学引用本文复制引用
吴成业,刘光晔,孙瑞,张元觉,姜远孟..应用潮流方程简化网络计算的电力系统小干扰稳定分析[J].电力系统及其自动化学报,2018,30(6):10-15,6.基金项目
国家自然科学基金资助项目(51577053) （51577053）
