面向微型能源互联网接入的交直流配电网协同优化调度策略

doi:10.19595/j.cnki.1000-6753.tces.201374

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Abstract

By connecting distributed generations (DG) to the distribution network through micro-energy-internet (MEI), it can fully utilize the characteristics of the multi-energy coupling and complementation of MEI to promote the consumption of renewable energy. This paper gave full consideration to the technical advantages of AC/DC distribution network and MEI as well as the interaction between them, and studied the optimal dispatching strategy of AC/DC distribution network considering dynamic network reconfiguration and multi-energy collaboration. Firstly, according to the characteristics of the system structure and dispatching model of AC/DC distribution network containing MEI, the coordinated operation mechanism was studied with the locational marginal price of distribution network and the bought/sold power of MEI as interactive variables. Aiming at minimizing operating cost of AC/DC power distribution network and MEI, a coordinated dispatching model of AC/DC power distribution network was established with full consideration of network operation constraints and interaction coupling constraints. Then, based on the derivation of locational marginal price of the mixed integer second order cone programming model, a fast solving method based on the extreme learning machine coupling interaction model was proposed. Finally, an example analysis was carried out on the improved IEEE 33 node AC/DC distribution network containing MEI. The simulation results showed that the scheduling architecture can fully reduce the network operation cost and promote the information interaction between the micro energy grid and AC/DC distribution network. Meanwhile, the solution technology proposed in this paper can greatly improve the solution efficiency on the premise of ensuring the calculation accuracy.

Key words： AC/DC distribution network micro energy internet coordinated optimal scheduling dynamic network reconfiguration extreme learning machine

Received: 19 October 2020

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TM732

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	Articles by authors
	Zheng Zhong
	Miao Shihong
	Li Chao
	Zhang Di
	Han Ji

Cite this article:

Zheng Zhong,Miao Shihong,Li Chao等. Coordinated Optimal Dispatching Strategy of AC/DC Distribution Network for the Integration of Micro Energy Internet[J]. Transactions of China Electrotechnical Society, 2022, 37(1): 192-207.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.201374 OR https://dgjsxb.ces-transaction.com/EN/Y2022/V37/I1/192

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