考虑储能容量衰减的多保供电型微网最优经济配置及可靠性评估  

Optimal Economic Configuration and Reliability Evaluation of Multiple Power Supply Ensuring Microgrid Considering Energy Storage Capacity Attenuation

作　　者：辛曦 欧阳森[1] 黄祎 张晋铭 XIN Xi;OUYANG Sen;HUANG Yi;ZHANG Jinming(School of Electric Power,South China University of Technology,Guangzhou 510640,China)

机构地区：[1]华南理工大学电力学院,广州市510640

出　　处：《电力建设》2024年第10期100-113,共14页Electric Power Construction

基　　金：国家自然科学基金项目(52177085)。

摘　　要：针对重要负荷保供电需求日益增长、储能寿命模型考虑不全面的问题,提出了考虑储能容量衰减的光储型微电网最优经济配置方法并对其进行可靠性评估。首先,考虑到重要负荷密度逐渐增大而保供电需求日益迫切的情况,提出采用多微网系统满足负荷保供电需求的思路和方法;其次,基于储能寿命模型更新储能的置换成本和损耗成本,以光储型微电网全寿命周期内净收益最大为目标函数建立最优经济规划模型,并采用Gurobi求解器对微电网光伏和储能容量进行优化计算;然后针对并联、串联和混联多微网系统的拓扑特点,并考虑其发生故障后对微网可靠性的影响,从三个维度建立可靠性指标体系。最后,以改进的RBTS Bus6 F4系统为例对光伏和储能进行优化配置并对配置后的多微网系统进行可靠性评估,结果表明考虑储能容量衰减后微电网配置结果更具有合理性,且在设计的算例中并联多微网系统可靠性更高,对保供电型微电网规划配置具有借鉴意义。Aiming at the problems of increasing power supply demand of important loads and incomplete consideration of energy storage life model,an optimal economic configuration method of photovoltaic-storage microgrid considering energy storage capacity attenuation is proposed and its reliability evaluation is carried out.In order to improve the reliability of the microgrid on the basis of ensuring economy.Firstly,considering the increasing density of important loads and the increasingly urgent of power supply demand,the idea and method of using multi-microgrid system to meet the load power supply demand are proposed.Secondly,based on the energy storage life model,the replacement cost and loss cost of energy storage are updated.The optimal economic planning model is established by taking the maximum net income in the whole life cycle of the photovoltaic-storage microgrid as the objective function,and using the gurobi solver to optimize the photovoltaic and energy storage capacity of the microgrid.Then,according to the topological characteristics of parallel,series and hybrid multi-microgrid systems,considering the influence of faults on the reliability of microgrid,establishing the reliability index system from three dimensions.Finally,the improved RBTS Bus6 F4 system is taken as an example to optimize the configuration of photovoltaic and energy storage,and then evaluate the reliability of the configured multimicrogrid system.The results show that the configuration results of microgrid considering energy storage capacity attenuation are more reasonable,and the reliability of parallel multi-microgrid system is higher in the example designed in this paper,which provides reasonable and effective suggestions for the planning and configuration of power supply microgrid.

关 键 词：多微网系统 储能容量衰减 保供电需求 最优经济配置 可靠性 

分 类 号：TM732[电气工程—电力系统及自动化]