输水工程中构网型光储供电及控制策略

Grid Type Optical Storage Power Supply and Control Strategy in Water Transmission Engineering

采用构网型光储系统为输水工程中的重要负荷供电具有良好的经济性和可靠性。为解决输水工程中光储系统在离网和并网模式转换过程可能产生的供电连续性、电压支撑和冲击电流问题,提出一种电子变流器快速切换控制策略,从理论上分析了并网供电至离网供电过程中SCR强制关断方法,计算了不同负荷电压幅值变化范围内并网电流关断时间,并通过实验验证了构网型光储系统并离网无缝切换策略的可行性。

The use of a grid type optical storage system to supply power to important loads in water transportation projects is cost-effective and reliable.In order to address issues related to power supply continuity,voltage support,and surge current that may occur during the process of off grid and grid connected mode conversion in the photovoltaic storage system of water transmission engineering,this paper proposes a fast switching control strategy for electronic converters.The SCR forced shutdown method during the process from grid connected power supply to off grid power supply is theoretically analyzed,and the grid connected current shutdown time is calculated within different load voltage amplitude ranges.In addition,the feasibility of the connection-separation seamless switching strategy for the networked optical storage system is verified through experimental results.