Reactive Power Optimization Based On Multi-agent Network Control System

Voltage and reactive power optimization is an important means for power resources configuration and improvement of system security and economic profit. This dissertation discusses the voltage and reactive power optimization algorithm, the power network partitioning and its practicability and application scheme. The article proposes the idea to realize voltage and reactive power optimization control distributed. Then partition equivalent model is built, which can split the big power system into several subsystems, so the problem can be solved parallel, and the global optimization can be obtained through the linking nodes communication. The simple branch and cut method be used to deal with the discrete variables that can not be solved by the direct nonlinear primal-dual interior point algorithm. Here, the sub-area division reactive power optimization problem is solved by the direct nonlinear primal-dual interior point algorithm. Combined above methods with the multi-agent technology, a multi-agent system based distributed voltage and reactive power system is proposed. The research includes following contents:1. This paper takes the direct nonlinear primal-dual interior point arithmetic to resolve the voltage and reactive optimization problem. This paper also discusses several problems in its solution, such as the choice of corrector steps and decision of obstacle gene. It also introduces the principle of advanced predictor-corrector primal-dual interior point arithmetic, that is by introducing predictor and corrector to correspond the optimization and feasibility, the convergence ability is improved. Discrete variables, such as taps of transformer and groups of capacitor, can't be resolved in primal-dual interior point arithmetic, which is used in power system voltage/reactive optimization problem. This paper introduces several methods to resolve this problem, such as penalty function method, complete branch and cut method and simple branch and cut method. The last one is adopted in this paper. This paper tested the above methods with IEEE standard systems. The result indicates that to resolve the...