基于Matlab的分布式光伏并网发电系统对配电网电能质量的影响  

Influences of the distributed photovoltaic grid-connected generation system on the distribution network power quality based on Matlab

作　　者：韩富佳 王淳[1] 

机构地区：[1]南昌大学电气与自动化系,南昌330031

出　　处：《电测与仪表》2015年第14期16-21,共6页Electrical Measurement & Instrumentation

基　　金：国家自然科学基金资助项目(51167012);江西省教育厅科技计划项目(GJJ14165)

摘　　要：文章首先搭建了基于Matlab-Simulink的分布式光伏并网发电系统和具体的配电网的仿真模型,然后在此基础上,从电压偏差和节点电压和负荷电流的谐波含量角度,定量分析了分布式光伏并网发电系统的并网位置和并网容量对配电网电能质量的影响。仿真结果表明:并网位置越接近线路末端或者并网容量越大,光伏系统对配电网的电能质量影响越大,而且离并网位置越近的节点所受影响也越严重。In this paper, a simulation model of a distributed photovoltaic grid-connected generation system and a detailed distribution network were built firstly based on Matlab-Simulink, then on this basis, from the standpoint of the voltage deviation, the harmonic contents of the node voltage and the load current, the influence of the grid-connected position and the grid-connected capacity of the distributed photovoltaic grid-connected generation system on the distri- bution network power quality was quantitatively analyzed. The simulation results show that the closer the grid-connected position gets to the end of the line or the larger the-grid-connected capacity is, the greater the influence of the pho- tovohaie system on the power quality of the distribution network is, and the closer the node gets to the grid-connected position, the more serious the influence is.

关 键 词：配电网 分布式光伏并网发电系统 电能质量 电压偏差 谐波含量 

分 类 号：TM93[电气工程—电力电子与电力传动]