电力系统保护与控制Issue(2)：6-12,7.
光储微电网的低电压穿越控制策略研究
Low voltage ride-through control of the photovoltaic/battery micro-grid system
摘要
Abstract
For low voltage ride through issue of the micro-grid system, a coordinated control of low voltage ride-through (LVRT) is proposed for the photovoltaic/battery micro-grid system. During low voltage of the system, the photovoltaic system tracks maximum powerpoint of PV panels and the battery system maintains the constant of the DC bus voltage. When power output of the battery system has reached its limit, the photovoltaic system adopts the constant voltage control strategy to ensure a stable voltage. Considering the load fluctuation of micro grid, a current limit control strategy with the function of reactive compensation is proposed. This strategy can provide voltage support for grid side and avoid overcurrent of the converter output. The simulation results show that the solar energy is fully used, the DC bus voltage is maintained at a constant level, the overcurrent of the converter output is avoided and the system voltage is supported by the reactive power from the inverter. The aim of LVRT is realized and the effectiveness of the control strategy is verified.关键词
微网/低电压穿越/光储协调控制/负荷波动/无功补偿Key words
micro-grid system/low voltage ride-through (LVRT)/coordinated photovoltaic/battery control/load fluctuation/reactive compensation分类
信息技术与安全科学引用本文复制引用
范柱烽,毕大强,任先文,薛腾磊,陈宇刚..光储微电网的低电压穿越控制策略研究[J].电力系统保护与控制,2015,(2):6-12,7.基金项目
国家高技术研究发展计划(863计划)项目(2012AA051201)This work is supported by National High-tech R&D Program of China (863 Program)(No.2012AA051201) （863计划）
