电气化铁道的快速发展也带来一些不容忽视的技术问题。由于大量采用交直整流型电力机车，电气化铁路牵引供电系统的接入，会严重影响电力系统的电能质量，我国不少牵引变电所的电能质量都达不到国标要求。目前，我国大部分牵引变电所采用的固定无功补偿方式，主要目的是补偿无功功率，但其效果受负荷波动和电力部门无功计量方式的影响。因此，应用静止无功补偿器(SVC)补偿牵引负荷产生的无功功率便成为一种趋势。电气化铁路所引起的电能质量问题一直是关注的焦点。采用有源补偿对电气化铁路电能质量进行综合补偿，是一种切实有效的方法。对其进行研究具有实际意义及实用价值。

本文学习电气化铁路牵引供电系统的相关知识，研究谐波、无功及负序的补偿方法。学习Matlab仿真软件，并利用Matlab仿真软件对其进行仿真分析，得出相关结论，完成毕业设计论文。

 

 

    The rapid development of electrified railway also brings some technical problems that can not be ignored. As a large number of the use of AC rectifier electric locomotive, electrified railway traction power supply system access, will seriously affect the power quality of power systems, many of China's traction substation power quality are less than the national standard requirements. At present, most of China's traction substation used in the fixed reactive power compensation, the main purpose is to compensate for reactive power, but its effect by the load fluctuations and power sector reactive power measurement methods. Therefore, the use of static var compensator (SVC) compensation for traction load generated reactive power has become a trend. The power quality problem caused by electrified railway has always been the focus of attention. It is an effective method to synthesize the power quality of electrified railway by using active compensation. Its research has practical significance and practical value.

    This paper studies the knowledge of electrified railway traction power supply system, and studies the compensation method of harmonics, reactive power and negative sequence. Learning Matlab simulation software, and using Matlab simulation software for its simulation analysis, draw the relevant conclusions, complete the graduation design papers.

 

Key words: traction substation; harmonic; compensation method