摘要
辐照度变化和并网光伏逆变器启停机引起的功率波动都可能会引起并网点电压闪变。文章首先分析了闪变与并网点短路容量、阻抗角度及并网功率波动大小的关系,并基于Matlab/Simulink软件搭建了虚拟电网模型和数字闪变测试仪模型。针对目前广泛使用的500k W光伏逆变器开展了不同运行功率和启停机工况下的测试,测量不同工况下该逆变器引起的闪变大小,并对测量结果进行了对比分析。
Power fluctuation caused by irradiance changes , inverter cut-in and cut-off may cause flicker at the grid-connected point .The connection between the flicker and grid short-circuit capacity , grid impedance angle and power change amount is analyzed .And the flicker is tested on a 500 kW photovoltaic （ PV ） inverter at different load and switch operation .Based on the virtual gird model and the flicker meter model developed on Matlab /Simulink platform , the flicker results are tested and analyzed under these operation conditions .
出处
《电测与仪表》
北大核心
2015年第9期51-55,共5页
Electrical Measurement & Instrumentation
基金
国家电网公司科技项目资助(NY71-13-036)
