基于电池储能和柔性直流的城市配电网经济调度策略  

Economic Dispatching Strategy of Urban Distribution Network Based on Battery Energy Storage and Flexible Direct Current

作　　者：张伟[1] 朱钊 许浩伟 付守赛 ZHANG Wei;ZHU Zhao;XU Haowei;FU Shousai(Zhengzhou Power Supply Company of State Grid,Zhengzhou 450000,China;State Grid Henan Energy Internet Electric Power Design Institute Co.,Ltd.,Zhengzhou 450000,China)

机构地区：[1]国网郑州供电公司,河南郑州450000 [2]国网河南能源互联网电力设计院有限公司,河南郑州450000

出　　处：《通信电源技术》2023年第1期113-115,共3页Telecom Power Technology

摘　　要：为了降低电力企业供电服务成本,基于电池储能和柔性直流设计城市配电网经济调度方法.将电价波动值作为参照,根据电价的需求响应,划分不同时段下的电价峰值与谷值.基于用电负荷中的电价弹性系数,建立电价弹性矩阵,构建城市配电网需求响应模型.根据配电网运行中电池储能的充电与放电方式,结合柔性直流配电网作业模式,设计对应的经济调度目标函数.根据比例积分(Proportional Integral,PI)理论,调节全网的调度功率,根据经济系数和反应速率系数对各目标执行分配,实现经济调度过程中的PI控制.以某城市大型居民配电服务中心为例,设计对比实验,结果表明设计方法可以有效降低供电支出成本,提高电力企业的经济效益.In order to reduce the power supply service cost of power enterprises,an economic dispatching method of urban distribution network is designed based on battery energy storage and flexible DC.Taking the fluctuation value of electricity price as a reference,the peak value and valley value of electricity price in different time periods are divided according to electricity demand.Based on the elasticity coefficient of electricity price in electricity load,the elasticity matrix of electricity price is established,and the demand response model of urban distribution network is constructed.According to the charging and discharging modes of battery energy storage in the operation of distribution network,combined with the operation mode of flexible DC distribution network,the corresponding economic dispatch objective function is designed.According to PI theory,the dispatching power of the whole network is adjusted,and the targets are allocated according to the economic coefficient and reaction rate coefficient,so as to realize PI control in the process of economic dispatching.Taking a large residential power distribution service center in a city as an example,a comparative experiment is designed.The results show that the design method can effectively reduce the cost of power supply and improve the economic benefits of electric power enterprises.

关 键 词：电池储能 柔性直流 调度经济性 城市配电网 

分 类 号：TM912[电气工程—电力电子与电力传动]