电力系统及其自动化学报2024，Vol.36Issue(5)：130-140,11.DOI:10.19635/j.cnki.csu-epsa.001338
光储联合发电系统不对称故障穿越控制策略
Asymmetric Fault Ride-through Control Strategy for Photovoltaic-Energy Storage Combined Power Generation System
摘要
Abstract
Aimed at the problems of output power from a photovoltaic(PV)power generation system and the two-fold fluctuation of DC-side voltage under grid asymmetrical fault,a low voltage ride-through control strategy for a PV-energy storage combined power generation system is proposed.During the low voltage ride-through period,the capacities of a PV grid-connected inverter and an energy storage converter are fully utilized to deliver active and reactive power to the grid.On this basis,the energy storage converter is made to adopt a negative-sequence voltage compensation control strat-egy based on negative-sequence virtual conductance.At the same time,the principles for one single and multiple energy storage converters participating in negative-sequence voltage compensation are analyzed,and an adaptive optimization design of negative-sequence virtual conductance is carried out.Simulation results show that the proposed control strategy can effectively reduce the output power from the PV power generation system and the two-fold fluctuation of DC-side voltage.关键词
不对称故障/光储联合发电系统/低电压穿越/储能变流器/负序电压Key words
asymmetrical fault/photovoltaic(PV)-energy storage combined power generation system/low voltage ride-through/energy storage converter/negative-sequence voltage分类
动力与电气工程引用本文复制引用
陈晓龙,郑杰颖,李仲青,王聪博..光储联合发电系统不对称故障穿越控制策略[J].电力系统及其自动化学报,2024,36(5):130-140,11.基金项目
国家电网有限公司科技项目(5100-202155028A-0-0-00) （5100-202155028A-0-0-00）
