摘要本文介绍了当今电力系统存在的与无功补偿相关的问题，概述了正弦电路以及非正弦电路无功功率的定义与计算，其中对于非正弦电路又分别从时域和频域两方面进行分析。又详细地阐述了FC-TCR型SVC的基本原理和补偿机制，并分别根据理想补偿网络法、功率平衡法以及对称分量法对无功补偿进行仿真与分析，其中，在补偿导纳与导通角（触发角）之间的转化上采用牛顿迭代法。仿真分析结果表明，以上三种方法均可以提高系统功率因数，减小三相电流的不对称度，平衡三相电流。比较分析结果表明，理想补偿网络在实际中应用较少，而基于FC-TCR型SVC的功率平衡法和对称分量法都能够连续调节无功功率，并且对称分量法在快速补偿系统无功功率方面具有较大的优势，是功率平衡法无法代替的。65278

毕业论文关键词  FC-TCR型SVC    理想补偿网络法    功率平衡法    对称分量法 牛顿迭代法    快速补偿

毕业设计说明书（论文）外文摘要

Title   Asymmetric dynamic reactive power compensation technology and applications                     

Abstract

This article describes the issues related on reactive power compensation which exist in today's power system and outline the sinusoidal and non-sinusoidal circuit’s  reactive power definition and calculation ,in which, as for  non-sinusoidal ,it is analyzed from the time domain and frequency domain , respectively. FC-TCR(SVC) is also elaborated about it’s basic principles and compensation mechanisms  in  detail ,and  then  according  to the method of ideal compensation network, power balance method  and  the  method  of  symmetrical components，We conduct simulation and analysis of  reactive power compensation，in which we use Newton iterative method in the conversion between compensation admittance and conduction angle (firing angle) . Simulation results show that the above three methods can all improve the system’s power factor, reduce the asymmetry of the three-phase current and balance three-phase current. Comparative analysis shows that the method of ideal compensation network is rarely applied in practice. Besides，power balance method and the method of symmetrical components which are all based on FC-TCR（SVC） are able to continuously adjust the reactive power. Above all, the method of symmetrical components has great advantages in the fast reactive power compensation, which cannot  be  replaced by the  the  power  balance  method.

Keywords  FC-TCR（SVC）  the method of ideal compensation network        power  balance  method     the method of Symmetrical components   

fast compensation

目   次

目录

1 绪论 1

1.1 论文选题背景与研究意义 1

1.2 国内外研究历史与现状 2

1.2.1 动态无功补偿技术发展历程 2

1.2.2 动态无功补偿技术的现状和发展前景 3

1.3  本文的主要工作与内容 4

2 无功补偿概述 5

2.1 无功功率定义 5

2.1.1 正弦电路无功功率定义 5

2.1.2 非正弦电路无功功率定义 5

2.2 无功功率的物理意义