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Method and system for unit recovery sequence optimization taking into account multi-infeed direct current participation

A multi-feed DC, sequence optimization technology, applied in the electrical field, can solve problems such as lack of solutions, and achieve the effect of avoiding the reduction of system security

Inactive Publication Date: 2019-01-11
ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] To sum up, in the prior art, there is still no effective solution to the problem of how to restore and optimize the receiving system in the event of a major power outage.

Method used

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  • Method and system for unit recovery sequence optimization taking into account multi-infeed direct current participation

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Embodiment Construction

[0045] 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 in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0046] 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 combinations thereof.

[0047] This application conducts optimization research on the power supply start-up sequence for a ...

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Abstract

The invention discloses a method and a system for unit recovery sequence optimization taking into account multi-infeed DC participation. According to the DC starting characteristics, the stability index representing the impact degree of the DC starting on a receiving end power network is determined. According to the above stability index, the optimization model of generator restoration sequence considering multi-HVDC participation is established. Genetic algorithm with elite strategy and non-dominated ranking is used to solve the model. According to the result, the order of unit recovery is obtained. The method can effectively avoid the problem of system security degradation caused by only pursuing recovery efficiency in the startup process of multi-HVDC units.

Description

technical field [0001] The invention relates to the field of electric technology, in particular to a method and system for optimizing the restoration sequence of a unit taking into account the participation of multi-infeed direct current. Background technique [0002] In the process of network structure reconstruction after a major power outage, black-start units, live islands and nearby live systems connected by lines can effectively support the network structure reconstruction in the power outage area, and lay the foundation for subsequent load recovery. Optimizing power recovery has great practical significance. [0003] In recent years, with the development of power technology, high voltage direct current transmission (HVDC) technology has been widely used in long-distance and large-capacity power transmission due to its good economy and controllability. So far, the continuous construction of DC lines has led to the formation of a large-scale multi-infeed DC receiving e...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/36H02J3/38G06Q50/06
CPCG06Q50/06H02J3/36H02J3/381H02J2203/20Y02E60/60
Inventor 王洪涛蔺呈倩刘玉田杨冬马欢王春义
Owner ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY
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