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Dispatching method and system for AC/DC hybrid distribution network comprising power electronic transformer

An AC-DC hybrid, power electronic technology, applied in the direction of AC networks with the same frequency with different sources, etc., can solve the problem that the scheduling scheme is not optimal.

Active Publication Date: 2019-06-28
CHINA ELECTRIC POWER RES INST +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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

Method used

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  • Dispatching method and system for AC/DC hybrid distribution network comprising power electronic transformer
  • Dispatching method and system for AC/DC hybrid distribution network comprising power electronic transformer
  • Dispatching method and system for AC/DC hybrid distribution network comprising power electronic transformer

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Embodiment 1

[0079] Such as figure 1 As shown, the flow chart of the scheduling method for the AC-DC hybrid distribution network including power electronic transformers provided by the present invention includes:

[0080] Step S1, obtaining the operating parameters of the AC / DC hybrid distribution network including the power electronic transformer;

[0081] Step S2, based on the operating parameters and the pre-built coupling optimization model, obtain the active output of the distributed power supply in the AC network and the active output of the PET port of the power electronic transformer;

[0082] Step S3, dispatching the AC-DC hybrid distribution network based on the active output of the distributed power sources in the AC network and the active output of the PET port of the power electronic transformer.

[0083] Such as figure 2As shown, it is a detailed flow chart of the optimization method for the AC-DC hybrid distribution network including power electronic transformers provided...

Embodiment 2

[0160] Based on the same inventive concept, the present invention also provides a dispatching system for an AC / DC hybrid distribution network including power electronic transformers, including:

[0161] An acquisition module, configured to acquire operating parameters of an AC / DC hybrid distribution network including a power electronic transformer;

[0162] A solving module is used to obtain the active output of the distributed power supply in the AC network and the active output of the PET port of the power electronic transformer based on the operating parameters and the pre-built coupling optimization model;

[0163] The scheduling module is used to schedule the AC-DC hybrid distribution network based on the active output of the distributed power supply in the AC network and the active output of the PET port of the power electronic transformer.

[0164] In an embodiment, the system further includes a construction module for constructing a coupling optimization model;

[016...

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Abstract

The invention provides a dispatching method and system for an AC / DC hybrid distribution network comprising a power electronic transformer. The dispatching method comprises steps of: acquiring the operating parameters of the AC / DC hybrid distribution network comprising the power electronic transformer; based on the operating parameters and a pre-established coupling optimization model, obtaining the active output of a distributed power source in the AC network and the active output of the PET port of the power electronic transformer; based on the active output of the distributed power source inthe AC network and the active output of the PET port of the power electronic transformer, dispatching the AC / DC hybrid distribution network. The dispatching method and system realize the sufficient consumption and efficient utilization of the renewable energy source, comprehensively exert the flexible regulation capability of the PET, realize the mutual coordination and complementary optimizationof the AC / DC network, and improve the power interaction capability of the controllable distributed energy 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 dispatching 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 the high-permeability distributed power generation composed of renewable energy to the distribution network requires AC-DC power generation based on power electronic transformers (Power Electronic Transformer, PET). Hybrid distribution network, AC-DC hybrid distribution network provides new means and methods for the flexible access and effective regulation of distributed renewable energy, and the power electronic transformer integrating power electronic conversion technology and high-frequency transformer technology has a regional The characteristics of coordination, AC-D...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/06
Inventor 蒲天骄李烨董雷张涛陈乃仕王新迎张晨乔骥李时光柳丹袁晓冬
Owner CHINA ELECTRIC POWER RES INST
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