摘要
随着我国电铁和风电的快速发展,许多地区存在着风电和电铁集中接入的问题,由于电铁牵引负荷存在负序和谐波等电能质量问题,将会影响到风电场并网点处电能质量,进而会影响到风电场的运行特性,因此有必要探究电铁牵引负荷对风电场的影响。首先介绍了牵引供电系统概况,分析电铁牵引负荷的负荷特性,并从理论上分析电铁牵引负荷引起的三相不平衡和谐波等问题对风电场运行特性的影响。最后总结出目前关于电铁牵引负荷对风电场运行特性影响的研究现状,以及改进风电场电能质量主要采取的抑制措施,并指出研究中存在的不足以及改进措施。
Along with the rapid development of electric railway and wind power in China,we faced the problems that wind farm and electric railway access to the same place in many areas. It will bring about power quality problems due to the negative sequence and harmonic caused by the electric railway traction load,and then it will affect the operation characteristics of wind farm. So it is necessary to explore the influence of the electric railway traction load on the operating characteristics of the wind farm. This paper firstly introduces the general situation of traction power supply system,and analyzes the load characteristics of electric railway traction load,and then introduce the influence of the harmonic and negative sequence caused by electrified railway to the power grid. Besides,this paper analyses the unbalanced three-phase and harnomic waves on the operation characteristics of the wind farm caused by the electrified railway traction case load in theory. Finally,this paper introduces the study about the project in recent years,and points out the shortcomings in the research.
出处
《华北电力技术》
CAS
2016年第10期53-58,共6页
North China Electric Power
基金
冀北公司科技项目(KJJ15008)
关键词
电铁
电能质量
风电场
运行特性
electrified railway
electric power quality
wind farm
operation characteristics
