摘要
为了提高微电网协调调度效率,设计了一种面向储能的高/低压母线微电网协调调度策略。通过分析高压与低压侧的电压参数来实现双向DC/DC变换器工作模式的动态切换,无论进行充电还是放电均可以控制各储能单元荷电状态(SOC)达到相同的均衡值。为系统高压侧与低压侧设置发电与储能结构,并在两侧设置了直流负荷,开展储能SOC控制和功率平衡控制分析,研究结果表明:对SOC持续调节后,高/低侧储能单元形成了相近的SOC,获得了相近的充放电功率分配结果。介于0.5~1 s时,功率从高压侧传递至低压侧的数值为2.2 kW,低压侧母线电压保持约190 V;介于1~1.5 s时,母线电压提高至420 V,高压侧输送至低压侧的功率达到4 kW,在低压侧形成了200 V的母线电压。
In order to improve the efficiency of coordinated microgrid scheduling,a high/low voltage bus microgrid coor⁃dinated scheduling strategy for energy storage is designed.By analyzing the voltage parameters of the high-voltage and low-voltage sides,the working mode of the bidirectional DC/DC converter can be dynamically switched,and the state of charge(SOC)of each energy storage unit can be controlled to reach the same equilibrium value regardless of charging or discharging.Power generation and energy storage structures are set for the high-voltage side and low-voltage side of the system,and DC loads are set on both sides to carry out the analysis of energy storage SOC control and power balance control.The research results show that:after continuous adjustment of SOC,the high/low side energy storage units forms similar SOCs and obtains similar results of charge and discharge power distribution.When it is between 0.5~1 s,the power transferred from the high-voltage side to the low-voltage side is 2.2 kW,and the bus voltage on the low voltage side is maintained about 190 V;Between 1~1.5 s,the bus voltage increases to 420 V,the power transmitted from the highvoltage side to the low-voltage side reaches 4 kW,and a 200 V bus voltage is formed on the low-voltage side.
作者
沈健
孙伟刚
王少春
杨炀
陈楚航
Shen Jian;Sun Weigang;Wang Shaochun;Yang Yang;Chen Chuhang(State Grid Zhejiang Electric Power Co.,Ltd.Shaoxing Power Supply Company,Shaoxing 312000,China)
出处
《电力电子技术》
2025年第6期97-101,共5页
Power Electronics
关键词
微电网
储能
荷电状态
microgrid
energy storage
state of charge
