电力系统自动化2016，Vol.40Issue(13)：41-47,7.DOI:10.7500/AEPS20150520008
基于网络结构的暂态势能分布机理分析
Mechanism Analysis of Transient Potential Energy Distribution Based on Network Structure
摘要
Abstract
An in‐depth study on the rule of change in transient energy distribution in the network can provide a basis for the forecast of power system stability , the recognition of power system vulnerable region , and the rational locating of monitoring and control devices in the network . By analyzing the change rule of branch phase‐angle difference , voltage , transient energy distribution after the equivalent two‐machine system is disturbed , this paper reveals the internal relationship between them . And the relationship between the change in branch phase‐angle difference and the network structure is proved from the perspective of geometry . It is shown that the distribution of branch potential energy coincides with the variation of phase‐angle difference . In the process of the power angle gradually broadening after the system perturbation , the energy is not evenly distributed in all the branches . Rather , with the gradual deterioration of stability degree , the nearer the position is to the oscillation center , the more the transient potential energy distribution of per unit reactance will be , and the smaller the stability margin will be . When the system loses stability , for the branches including the oscillation center , their transient potential energy distribution will be unbounded whereas for all the branches not including the oscillation center , their potential energy distribution is bounded . For the multi‐machine system , however , the spread of energy still depends on the structure and parameter of network . Simulation results have proved the correctness of the proposed method .关键词
支路相角差/暂态能量/网络结构/能量分布/传输功率Key words
branch phase-angle difference/transient energy/network structure/energy distribution/transmission power引用本文复制引用
孟祥侠,刘明光,张全柱,蔡国伟,巴合提别克,陈佳..基于网络结构的暂态势能分布机理分析[J].电力系统自动化,2016,40(13):41-47,7.基金项目
国家自然科学基金资助项目（41374189）；中央高校基本科研业务费专项资金资助项目（JD1202B ）。 （）
