基于电压波动的并网光伏系统对电能质量的影响  

Impacts of Voltage Fluctuation of Grid-connected Photovoltaic Systems on Power Quality

作　　者：张丁[1] 王颂凯 安源[1] 王浩[1] 丁航[1] ZHANG Ding WANG Songkai AN Yuan WANG Hao DING Hang(Xi＇ an University of Technology, Xi＇ an 721048, Shaanxi, China)

机构地区：[1]西安理工大学,陕西西安721048

出　　处：《电网与清洁能源》2017年第4期119-124,共6页Power System and Clean Energy

基　　金：国家自然科学基金重大项目(5119003);黄河上游水电开发有限责任公司项目-龙羊峡水光互补协调运行理论与方法研究~~

摘　　要：为了分析并网光伏发电系统接入电网后对用电质量所产生的影响,以系统电压波动为目标进行研究。在理论分析的基础上,基于电力系统分析综合程序(power system analysis software package PSASP)建立光伏电站输电网络模型,针对光照强度、光伏并网容量、光伏无功补偿等3方面的影响,对光伏发电并网系统对电能质量的影响进行仿真。仿真结果表明,光照扰动、接入电网的光伏容量、无功不足均会对系统电压产生一定影响,需要以相应的措施降低电压波动,从而提升系统电能质量。To analyze impacts of the grid-connected photo-voltaic power generation system on the power quality, system voltage fluctuations should be studied. Based on the theoretical analysis, a photovoltaic power plant transmission network model is built in this paper based on Power System Analysis Software Package（PSASP）, and considering the light intensity, PV grid capacity and PV reactive power compensation, impacts of the grid-connected photovoltaic power generation system on the power quality are simulated. The simulation results show that light disturbances, PV capacity connected to the grid and the insufficient of reactive power all have certain impacts on the system voltage, and appropriate measures are needed to reduce voltage fluctuations, so as to improve the system power quality.

关 键 词：光伏并网 电能质量 无功补偿 

分 类 号：TM615[电气工程—电力系统及自动化]