Alternating current and direct current power distribution network collaborative optimization scheduling method for micro-energy network access

Abstract

A micro-energy network access-oriented AC / DC power distribution network collaborative optimization scheduling method comprises the following steps of: according to a micro-energy network-containing AC / DC power distribution network system structure and scheduling model characteristics, researching a coordinated operation mechanism taking node marginal electricity price of an AC / DC power distribution network and electricity purchasing / selling power of a micro-energy network as interactive variables; establishing an AC / DC power distribution network-micro energy network coordinated dispatching model by taking minimum operation cost of the AC / DC power distribution network and the micro energy network as a target and considering network operation constraints and inter-network interactive coupling constraints; on the basis of node marginal electricity price derivation of a mixed integer second-order cone programming model, a model rapid solving method based on extreme learning machine coupling interaction is provided; and inputting the grid structure data, the distributed power generation output data and the load data into a solving method so as to obtain an optimal scheduling scheme of the AC / DC power distribution network. The design not only fully considers the interactive coupling between the AC / DC power distribution network and the micro-energy network, but also has high calculation precision and high solving efficiency.

Description

technical field [0001] The invention relates to the technical field of optimal dispatching of an AC / DC distribution network, in particular to a method for collaborative optimal dispatching of an AC / DC distribution network oriented to micro-energy network access. Background technique [0002] In recent years, vigorously developing clean energy has become an important strategic consensus for countries around the world to deal with environmental pollution and resource depletion. With the large-scale access of clean energy to the distribution network in the form of distributed generation (DG), the power flow distribution of the distribution network has undergone profound changes, and the traditional distribution network dispatching mode has been unable to meet the operational needs of the system; Due to the advantages of flexible topology and controllable power flow, the AC and DC distribution network has become an important development trend of the future smart distribution net...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects and problems existing in the prior art that do not fully consider the interactive coupling between the AC-DC distribution network and the micro-energy network, and the calculation accuracy is low, and the solution efficiency is low, and to provide a fully considering AC-DC distribution network. Interaction coupling between power grid and micro-energy network, high calculation accuracy and high solution efficiency for AC-DC distribution network collaborative optimization scheduling method for micro-energy network access

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