Evaluation of Virtual Power Plant Flexibility Resources Based on External Characteristic Equivalence
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...
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| Format: | Article |
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State Grid Energy Research Institute
2024-01-01
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| Series: | Zhongguo dianli |
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| Online Access: | https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.202310002 |
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| author | Rui ZHU Yiding OU Xiaotian LI Xingyu LEI Yuqing ZHOU Poyang ZHANG Rui OU |
| author_facet | Rui ZHU Yiding OU Xiaotian LI Xingyu LEI Yuqing ZHOU Poyang ZHANG Rui OU |
| author_sort | Rui ZHU |
| collection | DOAJ |
| description | 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. |
| format | Article |
| id | doaj-art-0eefd66f93144f5285d11ef393fdf0db |
| institution | DOAJ |
| issn | 1004-9649 |
| language | zho |
| publishDate | 2024-01-01 |
| publisher | State Grid Energy Research Institute |
| record_format | Article |
| series | Zhongguo dianli |
| spelling | doaj-art-0eefd66f93144f5285d11ef393fdf0db2025-08-20T02:58:50ZzhoState Grid Energy Research InstituteZhongguo dianli1004-96492024-01-01571303910.11930/j.issn.1004-9649.202310002zgdl-57-01-zhuruiEvaluation of Virtual Power Plant Flexibility Resources Based on External Characteristic EquivalenceRui ZHU0Yiding OU1Xiaotian LI2Xingyu LEI3Yuqing ZHOU4Poyang ZHANG5Rui OU6State Grid Chongqing Electric Power Co., Ltd., Chongqing 400015, ChinaState Key Laboratory of Power Transmission Equipment & System Security and New Technology(Chongqing University), Chongqing 400044, ChinaState Grid Chongqing Electric Power Research Institute, Chongqing 401120, ChinaState Key Laboratory of Power Transmission Equipment & System Security and New Technology(Chongqing University), Chongqing 400044, ChinaState Grid Chongqing Electric Power Co., Ltd., Chongqing 400015, ChinaState Key Laboratory of Power Transmission Equipment & System Security and New Technology(Chongqing University), Chongqing 400044, ChinaState Grid Chongqing Electric Power Co., Ltd., Chongqing 400015, ChinaIn 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.https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.202310002distributed energyvirtual power plantvertex searchflexibility value assessment |
| spellingShingle | Rui ZHU Yiding OU Xiaotian LI Xingyu LEI Yuqing ZHOU Poyang ZHANG Rui OU Evaluation of Virtual Power Plant Flexibility Resources Based on External Characteristic Equivalence Zhongguo dianli distributed energy virtual power plant vertex search flexibility value assessment |
| title | Evaluation of Virtual Power Plant Flexibility Resources Based on External Characteristic Equivalence |
| title_full | Evaluation of Virtual Power Plant Flexibility Resources Based on External Characteristic Equivalence |
| title_fullStr | Evaluation of Virtual Power Plant Flexibility Resources Based on External Characteristic Equivalence |
| title_full_unstemmed | Evaluation of Virtual Power Plant Flexibility Resources Based on External Characteristic Equivalence |
| title_short | Evaluation of Virtual Power Plant Flexibility Resources Based on External Characteristic Equivalence |
| title_sort | evaluation of virtual power plant flexibility resources based on external characteristic equivalence |
| topic | distributed energy virtual power plant vertex search flexibility value assessment |
| url | https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.202310002 |
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