安徽电网暂态电压稳定性初步研究

Primary research of transient voltage stability in Anhui electric network

分析了电力系统电压失稳的产生机理及与暂态失稳之间的联系,结合安徽省规划电网的特点指出可能导致安徽电网电压失稳的因素,选取有代表性的500kV过江线路展开静态电压稳定性评价及暂态电压稳定计算分析,最后得出结论:安徽500kV过江断面总体的电压稳定水平较高,相比之下,肥西￣繁昌双线在系统中稍显薄弱。

This paper analyzes the mechanism of voltage losing stability, and the relation between voltage out of stability and transient unstability. It indicates some factors that may lead to voltage losing stability in the light of peculiarities of the Anhui electrical grid planning. The paper selects the representative 500 kV transmission line crossing the Changjiang RAver, and calculates its static voltage stability and transient voltage stability. Finally it derives the conclusion： on the whole, the voltage stability level of Anhui 500 kV crossing river section is high, Feixi-Fanchang double lines are comparatively weak in the system.