计及EV和BESS的配电网削峰填谷两阶段优化调度策略研究  

Research on Two-stage Optimization Scheduling Strategy for Distribution Network Considering EV and BESS

作　　者：刘仲民[1] 王瑜 LIU Zhongmin;WANG Yu(College of Electrical and Information Engineering,Lanzhou University of Technology,Lanzhou 730050,China)

机构地区：[1]兰州理工大学电气工程与信息工程学院,兰州730050

出　　处：《电源学报》2025年第1期160-172,共13页Journal of Power Supply

基　　金：国网甘肃省电力公司科技资助项目(52273118000Y)。

摘　　要：随着电动汽车的大规模入网,其无序充电使得负荷峰谷差距进一步激增,给电力系统的稳定运行带来了负面影响,因此提出1种计及电动汽车负荷和电池储能系统的削峰填谷两阶段优化调度策略。首先,以用户充电成本和负荷绝对峰谷差最小为目标建立电动汽车有序充电调度模型,利用改进粒子群优化算法对模型进行求解,促使电动汽车避峰充电;其次,以负荷方差和储能寿命综合成本最小为目标建立储能系统削峰填谷优化调度模型,采用改进哈里斯鹰优化HHO(Harris Hawks optimization)算法对模型进行求解,从而减小负荷峰谷差,并通过削峰填谷评价指标对优化结果进行评估和分析;最后,以某电网实测负荷功率为例进行仿真实验,结果表明,所提两阶段优化调度策略使得负荷峰值降低了约147 k W,负荷谷值上升了约223 k W,峰谷差降低了约46.73%,能够有效改善负荷曲线,缓解负荷高峰期电力供应紧张的压力,保证了电网的安全、稳定运行。With the large-scale network entry of electric vehicles(EVs),their disorder charging further increases the load peak-valley gap,which has a negative impact on the stable operation of power system.A two-stage optimization scheduling strategy which takes into account the EV load and the energy storage system of batteries is proposed.First,an orderly charging scheduling model for EV is established,which aims at minimizing the absolute peak-valley gap between user charging cost and load.The improved particle swarm optimization algorithm is used to solve this model to avoid peak charging.Second,an optimal scheduling model of peak-shaving and valley-filling for the energy storage system is established with an objective of minimizing the variance of load and the combined cost of energy storage life,which is solved by the improved Harris Hawks optimization algorithm to reduce the peak-valley gap of load.In addition,the optimization results are evaluated and analyzed based on the evaluation index of peak-shaving and valley-filling.Finally,a simulation experiment is carried out with the measured load power of one power network as an example.Results show that under the proposed two-stage optimization scheduling strategy,the peak load decreases by about 147 kW,the valley load increases by about 223 kW,and the peak-valley gap deceases by 46.73%,indicating that this strategy can effectively improve the load curve,alleviate the pressure on power supply during the peak load period and ensure the safe and stable operation of power grid.

关 键 词：削峰填谷 储能系统 调度策略 两阶段优化 哈里斯鹰优化 

分 类 号：TM73[电气工程—电力系统及自动化] TM91