考虑双向能量交换型负荷的配电网最大供电能力模型  

Model of Total Supply Capability for Distribution Network Considering Bidirectional Energy Exchange Load

作　　者：肖峻[1] 贺国伟 XIAO Jun;HE Guowei(Key Laboratory of the Ministry of Education on Smart Power Grids(Tianjin University),Tianjin 300072,China;Beijing Electric Power Economic Research Institute Co.,Ltd.,Beijing 100055,China)

机构地区：[1]智能电网教育部重点实验室(天津大学),天津市300072 [2]北京电力经济技术研究院有限公司,北京市100055

出　　处：《电力系统自动化》2022年第5期11-19,共9页Automation of Electric Power Systems

基　　金：国家自然科学基金资助项目(51877144)。

摘　　要：在电动汽车这种双向能量交换型负荷接入配电网背景下,提出了计及用户与电网之间电能双向传递的最大供电能力(TSC)计算模型。首先,基于负荷时序特性建立了包含负荷可持续中断供电时间和响应费用约束的柔性负荷需求响应模型。然后,提出了能计及双向能量交换型负荷需求响应的TSC模型和计算方法,以量度需求响应费用与TSC之间的量化关系。最后,通过算例计算了不同响应费用约束下的TSC分布情况。分析结果表明,相比于单向能量交换型负荷以负荷削减方式参与需求响应,双向能量交换型负荷以放电方式参与需求响应使TSC进一步增大。In the background that electric vehicles as a kind of bidirectional energy exchange load access to the distribution network, a calculation model that can calculate the total supply capability(TSC) by taking the bidirectional power transfer between customers and the grid into account is proposed. First, based on the time-sequence characteristic of load, a flexible load demand response(DR) model with the constraints of sustainable outage time of load and DR cost is established. Then, the TSC model and calculation method considering the bidirectional energy exchange load that participate in the DR are proposed, which can measure the quantitative relationship between the DR cost and TSC. Finally, through the case analysis, the distribution of TSC under different constraints of DR cost is calculated. Analysis results show that, compared with unidirectional energy exchange load participating in the DR in the way of load reduction, bidirectional energy exchange load participating in the DR in the form of discharging can increase the TSC further more.

关 键 词：双向能量交换型负荷 最大供电能力 柔性负荷 需求响应 

分 类 号：TM73[电气工程—电力系统及自动化]