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A power flow model and solution method for AC and DC networks with energy routers

A power flow model and router technology, which is applied to the layout of AC and DC network circuits, AC network circuits, circuit devices, etc., and can solve the problems of non-convergence of power flow solutions and the memory occupation of Jacobian matrix elements.

Inactive Publication Date: 2020-04-28
CHINA ELECTRIC POWER RES INST
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  • Claims
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Problems solved by technology

Among them, the former is easier to implement, but when the coupling variables between AC and DC networks increase, the power flow solution is prone to non-convergence; the latter takes into account the coupling relationship of all variables and has good convergence, but the calculation of Jacobian matrix elements occupies more memory. many

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  • A power flow model and solution method for AC and DC networks with energy routers
  • A power flow model and solution method for AC and DC networks with energy routers
  • A power flow model and solution method for AC and DC networks with energy routers

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Embodiment Construction

[0036] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0037] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0038] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinatio...

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Abstract

The invention discloses an AC / DC network power flow model with an energy router and a solving method. Firstly, according to the topology structure of the energy router, steady modeling is carried outon different types of ports; a unified control equation is then written according to different control modes of the ports; an AC / DC network power flow model with the energy router is then built; and finally, through an improved unified power flow solving method disclosed in the invention, the model is solved. The AC / DC network power flow model with the energy router disclosed in the invention comprehensively considers multiple control modes of the energy router, operation requirements of the AC / DC network are met, the model can be solved quickly and accurately by the improved unified power flow solving method, and a certain technical support can be provided for scientific planning, economic dispatching and system safety analysis on the future AC / DC network with the energy router.

Description

technical field [0001] The invention relates to an AC / DC network power flow model containing an energy router and a solution method. Background technique [0002] The Energy Internet is an energy interconnection network based on the grid. The energy router in the power grid is a new type of power electronic transformer, which can replace the traditional AC transformer in the construction of the future energy Internet to realize the interconnection of the AC-DC hybrid network and meet the equal access of a large number of distributed power sources. core of construction. Accurately establishing the power flow calculation model of the AC-DC network including energy routers and quickly solving the power flow of the hybrid network are of great significance to the rational planning and economic dispatch of the AC-DC hybrid network. [0003] In the process of establishing and solving the power flow model of AC and DC networks with energy routers, on the one hand, it is necessary ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J4/00
CPCH02J4/00H02J2203/20
Inventor 段青沙广林盛万兴郭靖李可军邓敬方
Owner CHINA ELECTRIC POWER RES INST
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