Scheduling method and system for AC/DC hybrid distribution network with power electronic transformers

Abstract

The present invention provides a method and system for dispatching an AC / DC hybrid distribution network including a power electronic transformer, including: acquiring operating parameters of the AC / DC hybrid distribution network including a power electronic transformer; A coupling optimization model is used to obtain the active power output of the distributed power source in the AC network and the active power output of the PET port of the power electronic transformer; based on the active power output of the distributed power source in the AC network and the active power output of the power electronic transformer PET port Hybrid distribution network for dispatching. The invention realizes the full consumption and efficient utilization of renewable energy; brings into play the flexible regulation ability of PET, realizes the mutual coordination and complementary optimization of AC and DC networks, and improves the power interaction ability of controllable distributed energy resources between regions.

Description

technical field [0001] The invention relates to the field of coordination and optimization of an AC / DC hybrid distribution network, in particular to a scheduling method and system for an AC / DC hybrid distribution network including a power electronic transformer. Background technique [0002] With the approach of the energy crisis, power generation through renewable energy has become a trend. How to connect high-penetration distributed generation composed of renewable energy to the distribution network requires AC and DC based on Power Electronic Transformer (PET). Hybrid distribution network, AC / DC hybrid distribution network provides new means and methods for flexible access and effective regulation of distributed renewable energy. Power electronic transformers integrating power electronic conversion technology and high-frequency transformer technology have regional Features such as coordination, AC-DC hybrid and multi-directional power flow can increase the power exchange ...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem in the prior art that the scheduling scheme of the AC-DC hybrid distribution network containing power electronic transformers is not optimal, the present invention provides a scheduling method and system for AC-DC hybrid distribution networks containing power electronic transformers, Firstly, the AC-DC coupling distribution network including power electronic transformers is constructed, and then the decoupling and coordination control of coupling variables and local variables is carried out by using the decomposition optimization algorithm. The active output of distributed power in the power grid, so as to realize the complementary optimization of the AC-DC hybrid distribution network

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