中国电力2024，Vol.57Issue(1)：30-39,10.DOI:10.11930/j.issn.1004-9649.202310002
基于外特性等值的虚拟电厂灵活性资源价值评估
Evaluation of Virtual Power Plant Flexibility Resources Based on External Characteristic Equivalence
摘要
Abstract
In order to fully utilize the clean,flexible and economic characteristics of distributed energy(DE),it is needed to efficiently manage its comprehensive and flexible regulation characteristics.However,directly embedding the virtual power plant(VPP)model into the main grid scheduling is prone to the risk of privacy leakage and great computational burden of different energy entities.Therefore,it is necessary to aggregate the multi-category flexibility resources of VPP to calculate their equivalent external characteristics.To this end,this article proposes a VPP flexibility characterization method based on vertex search,which aggregates various flexibility within the VPP into the output power of the VPP nodes,whose mathematical essence is the projection of a high-dimensional flexibility space to a low-dimensional space.Then,by introducing the extrapolation-based vertex search method,we achieve the approximation of the projection by maximizing the Euclidean distance between hyperplanes.Finally,based on the flexibility equivalence method,we propose an evaluation method for VPP flexibility resources to explain the main grid operation cost and optimal solution changes before and after the VPP access from a geometric perspective.The case study shows that the proposed flexibility aggregation model can effectively reduce the operating cost of the main grids,and the proposed VPP value assessment method based on external characteristic equivalence can effectively evaluate the value generated by various types of flexible equipment under small changes of flexibility ranges.关键词
分布式能源/虚拟电厂/顶点搜索/灵活性价值评估Key words
distributed energy/virtual power plant/vertex search/flexibility value assessment引用本文复制引用
朱睿,欧乙丁,李筱天,雷星雨,周宇晴,张珀扬,欧睿..基于外特性等值的虚拟电厂灵活性资源价值评估[J].中国电力,2024,57(1):30-39,10.基金项目
国家自然科学基金青年基金资助项目(52307083) （52307083）
重庆市博士后科学基金项目(CSTB2023NSCQ-BHX0177) （CSTB2023NSCQ-BHX0177）
国网重庆市电力公司电力科学研究院科技项目(负荷需求响应能力辨识及调控关键技术研究,SGCQDK00DPJS2200302).This work is supported by the National Natural Science Foundation of China(No.52307083),Project of Chongqing Postdoctoral Science Foundation(No.CSTB2023NSCQ-BHX0177),and Science and Technology Project of State Grid Chongqing Electric Power Research Institute(Research on Key Technologies for Load Demand Response Capability Identification and Regulation,No.SGCQDK00DPJS2200302). （负荷需求响应能力辨识及调控关键技术研究,SGCQDK00DPJS2200302）
