摘要无功优化作为电力系统的一种调控手段，在保障系统稳定安全、经济运行方面有着重要作用。适当地调节系统中无功功率的分布，既可以稳定系统中电压平衡，维持电力系统稳定运行，也可以调节减少系统有功网损，使电力系统经济运行。82790

电力系统无功优化方法主要分为两类，一类是传统的无功优化算法，另一类是人工智能的无功优化算法。传统算法有计算快捷、收敛高效等优点，但只能处理离散数据且可能限制于局部最优解，而人工智能无功优化算法可以弥补传统算法的不足，既能处理连续变量又收敛效果好。人工智能优化方法里比较突出且应用较多的是遗传算法。本文采用了基于遗传算法的无功优化方法，并完成了相应的数学模型，详细地阐述了牛拉法在潮流计算中的理论和实际应用，又对遗传算法中的编码、适应度函数值、遗传操作以及收敛判据进行了详细地介绍。最终，运用本文理论分析并结合MATLAB软件完成对IEEE33节点电力系统单点、多点无功补偿的算例分析仿真，仿真结果表明：基于遗传算法的无功优化方法是可行且有效的。

毕业论文关键词  无功优化  潮流计算  遗传算法  MATLAB

毕业设计说明书外文摘要

Title    Study on Reactive Power Optimization             

Abstract Reactive power optimization is an important topic to maintain a safe and economic operation of power systems。 Reasonable arrangements for reactive power not only can effectively maintain system voltage levels, but also can greatly reduce active power loss。

    Reactive power optimization method is pided into the traditional reactive power optimization algorithms and artificial intelligence optimization algorithm。 The traditional algorithms calculates quickly and converges effectively。 But it can only process discrete data, and it may be limited to local optima。 Artificial intelligence algorithms has lots of advantages to solve optimization problem, and the genetic algorithm is one of most representative method to solve reactive power optimization。 This paper firstly elaborate the basic concepts of reactive power optimization, secondly discuss the mathematical model of reactive power optimization and the flow calculation equation of reactive power optimization, and then systematically study the basic concept of genetic algorithms and its application to Reactive Power Optimization。 Finally, this paper use MATLAB software to finish reactive power optimization simulation of the IEEE33 node system。 From the simulation results, we can see that reactive power optimization based on the genetic algorithm is feasible and effective。

Keywords  Reactive Power Optimization  Flow Calculation  Genetic Algorithms  MATLAB

目   次

1  引言 1

1。1  选题的背景及意义 1

1。2  国内外研究现状 1

1。3  本文主要任务 2

2  无功优化的基本原理 3

2。1  无功优化的基本概念 3

2。2  无功优化的数学模型 4

2。3  本章小结 7

3  无功优化中的电力系统潮流计算