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Day-ahead robust optimal dispatch of micro-energy networks considering source-load uncertainty
- Source :
- 电力工程技术, Vol 43, Iss 4, Pp 2-12 (2024)
- Publication Year :
- 2024
- Publisher :
- Editorial Department of Electric Power Engineering Technology, 2024.
-
Abstract
- Micro-energy networks integrate distributed energy systems, multiple loads and control devices in parks or communities. Micro-energy networks are capable of realizing multi-energy cogeneration and co-supply functions, which are conducive to enhancing the operational flexibility and economy of multi-energy networks. To effectively cope with the uncertainty of load and new energy output within the micro-energy networks, a polyhedral uncertainty set is established to portray the fluctuation of load and photovoltaic output. An energy hub (EH) coupling matrix describing the topology of micro-energy networks and the coupling relationship between the energy flows is constructed. Then, a two-stage robust optimization economic dispatch model is established for micro-energy networks in both grid-connected and islanded operation modes to minimize the system operation cost. Linear decision rule (LDR) and duality theory are used to develop model-solving strategy. Finally, a case is carried out using micro-energy networks based on improved IEEE 33-node distribution network. The results show that LDR can effectively approximate the relationship between decision variables and uncertain variables through linear affine function within a certain accuracy range, which reduces the difficulty of solving the two-stage robust optimization economic dispatch model.
Details
- Language :
- Chinese
- ISSN :
- 20963203
- Volume :
- 43
- Issue :
- 4
- Database :
- Directory of Open Access Journals
- Journal :
- 电力工程技术
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.9791fe52501b42f4b9d26a4497975d3b
- Document Type :
- article
- Full Text :
- https://doi.org/10.12158/j.2096-3203.2024.04.001