Research on Modeling and Solution of Reactive Power Optimization in Time Period of Power System

Abstract

In the reactive power and voltage optimization of the power grid, discrete control equipment such as capacitors and transformer taps act once in a period to realize the optimization of the integral sum of multi-objective functions such as line loss, total generator reactive power reserve, and equalization of reactive power reserve of each generator at each time, which can be transformed into the optimization of the expectation and variance of the objective function at each time in the period, It is the optimization model of discrete control variables in the period; As a continuous control variable, the generator terminal voltage can be adjusted at each time further to realize the optimization of the period objective function, that is, it is defined as the period continuous control variable optimization model. The discrete and continuous control variable optimization model is solved by cross iteration until convergence, and an adaptive weight genetic algorithm is proposed to solve it. A simulation example verifies the effectiveness of the model and algorithm.