Analysis And Research On Voltage Stability Control Of Power Grid In Tongnan County

With the rapid economic and social development of Junan County,and the increasingly high demand for power demand and power system,but due to the economic environment factors,the power system gradually in the limit load state,solve the problem of voltage stability is imminent.In this paper,according to the definition of voltage stability problem,using PSD software system,analyze the voltage stability of the power network of Junan County,put forward the method of issues related to the development and the present situation of the mechanism of cognition and voltage instability analysis,and analyzes the relationship between reactive power and voltage stability,and methods comparison of several current measure voltage stability.This paper focuses on the analysis of the stability of Junan power grid under the conditions of high load,normal operation and two cases of accident.At the same time,according to the basic situation of Junan county power grid,through the establishment of appropriate voltage analysis basic method of load model,analysis of response characteristics of Junan power grid load on voltage instability,find the weak node power network of Junan County,Junan county and the power grid load forecast,better utilization of reactive power compensation device,improve the grid voltage,reduce power loss,ensuring more safety and stable operation has certain help.