电力系统自动化Issue(19)：108-113,6.DOI:10.7500/AEPS20130507010
用于光伏低电压穿越测试的电压跌落发生器设计与试验
Design and Test of Voltage Sag Generators for Low Voltage Ride-through Test of Photovoltaic Systems
摘要
Abstract
A general design scheme of voltage sag generators(VSGs)is proposed for low voltage ride-through(LVRT)test of photovoltaic (PV) systems.The VSG can also be adapted to a variety of power grid voltage levels.Based on the requirements of LVRT curve specified in the national standard GB/T 19964-2012,the working principle of the typical impedance-type VSG is expounded.A design method is then proposed for the topology structure and electrical parameters of current limiting reactor and grounding reactor of a VSG.Furthermore,a design example of VSG at 10 kV voltage rating is given.The VSG has 20 different sag depths ranging from 0% to 100% of rated voltage with the step of 5%.Finally,for a grid-connected 500 kW PV inverter,the single-phase and three-phase voltage sag tests with several sag depths,especially 0%,are conducted and the test results prove the effectiveness of the design scheme.关键词
低电压穿越/电压跌落发生器/设计方案/拓扑结构/跌落深度Key words
low voltage ride-through (LVRT)/voltage sag generator (VSG)/design scheme/topology/sag depths引用本文复制引用
张军军,郑飞,黄晶生,张晓琳..用于光伏低电压穿越测试的电压跌落发生器设计与试验[J].电力系统自动化,2014,(19):108-113,6.基金项目
国家电网公司科技项目(NY71-13-036)。 （NY71-13-036）
