Study On The Application Of State Estimation And Simplified Gradient Method In AVC System

Reactive power optimization of power system,from the point of nature,it can be summed up as a research category of nonlinear programming.Power system reactive power optimization has the characteristics of convergence,discrete,nonlinear,specifically,in mathematics,a nonlinear refers to in order to achieve the balance of power and set up a series of preconditions,including the calculation formula of power,active power flow equation;These constraints,contains more complex content,both conditions of equality and inequality conditions,in reactive power optimization of power grid,the grid size determines the restriction conditions;Discreteness of discrete variables was conducted in power grid reactive power compensation said the number of related equipment(reactor and capacitor).This article will to power system reactive power optimization of state estimation and AVC(automatic voltage reactive control)system for further research.The main contents are arranged as following:First,first of all,this paper introduces the present situation of power system reactive power optimization are described,and enumerates the current world within the scope of the power system reactive power optimization research,mainly on the application of the current optimization algorithm has carried on the induction and summary,at the same time points out the strengths and weaknesses of various algorithms;Second,in the power system reactive power optimization involves a large number of various types of data,this topic put forward by using state estimation procedure to analyze the data of research methods;This topic has chosen the gansu silver electric transport situation of the current power system as a case,through the use of reactive reduced gradient method,designed on the premise of guarantee the safe operation of the power system,the methods and principle to control the power system.According to this topic,as far as possible in the power system reactive power optimization control costs,and ensure that the voltage at a normal state.AVC system based on the silver area in gansu current running situation,this article use the reduced gradient method for reactive power optimization,obtained from running for a period of time after the actual effect of view,this topic design scheme of reactive power optimization has strong reliability,and appropriateness.