摘要电能品质取决于电压，而电压又受无功功率的影响。电力系统规模不断扩大,无功功率与电压控制就成为一个重要的问题。对变电站进行电压无功综合控制，对降低网络耗损，提升电能质量等方面都有十分深远的意义。 75580

目前,变电站可采用的电压和无功调整的方法有四种：同步调相机、静止补偿器、并联补偿电容器以及有载调压变压器。本设计选择后两种，即 

 以此实现电压的无功控制。

本文对变电站电压无功控制策略进行了比较和选择。鉴于九区图在某些区域会出现电压无功反复调节的问题,电压波动较大，因此，本文对传统九区图进行一定的改进的基础上，形成十三区图。通过改变有载变压器分接头的位置和投切电容补偿器，使电压波动幅度较小,很好的实现了变电站电压无功的综合控制。

该论文有图22幅，表3个，参考文献22篇。

毕业论文关键词:变电站  电压调节  无功补偿  控制策略

Research on Substation Voltage Reactive-power Integrated Control

Abstract

The power quality depends on the voltage, but the voltage is affected by the reactive power。 In the field of modern power system, reactive power and voltage control in power system becomes an important issue。 Comprehensive control of voltage and reactive power in Substation has very far-reaching significance in reducing the consumption of network and improving the quality of electric energy 。

Nowadays, there are four methods of voltage and reactive power adjustment, which can be used in the substation, the synchronous modulation camera, the static compensator, the parallel compensation capacitor and the load voltage regulating transformer。 This design chooses the two latter methods which are called the parallel compensation capacitor and the load voltage regulating transformer。Voltage reactive power control can be achieved by combining the two means。

In this paper, the control strategy of substation voltage and reactive power is compared and selected。 Nine area map in some areas may have the problem of reactive power and voltage regulation, voltage fluctuations。 Therefore, this paper improves the traditional nine area map, forming a thirteen area map。 By changing the position of the branch joint of the load voltage regulating transformer and the parallel capacitor, the voltage fluctuation range becomes small, and the comprehensive control of voltage and reactive power is realized。

Key Words: Substation  Voltage Regulation  Reactive Power Compensation  Control Strategy

目录

摘  要 I

Abstract II

目录 III

1 绪论 1

1。1 选题背景 1

1。2 无功功率相关概念 2

1。3 简述电压与无功功率 2

1。4 本文任务 6

2 变电站电压无功相关研究综述 7

2。1 发展现状 7

2。2 意义和目标 8

2。3 无功与电压关系 9

2。4 电压无功综合调节原理 11

2。5 电压无功综合控制策略 15

2。6 本章总结 18

3 硬件部分 19

3。1 设计思路