Island division method and device for power distribution network after fault under high-permeability distributed power supply

A technology for distributed power supply and distribution network failure, applied in circuit devices, electrical components, AC network circuits, etc., can solve the problems of low power supply yield, lack of efficient island division methods, etc., and achieve the effect of restoring power supply with large benefits

Active Publication Date: 2021-03-16
XUJI GRP +3
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Efficient and accurate division of islands is a necessary condition for restoration of power supply. There is a lack of efficient island division methods in the prior art, resulting in low power supply yields

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  • Island division method and device for power distribution network after fault under high-permeability distributed power supply
  • Island division method and device for power distribution network after fault under high-permeability distributed power supply
  • Island division method and device for power distribution network after fault under high-permeability distributed power supply

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Embodiment Construction

[0048] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in combination with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are exemplary only, and are not intended to limit the scope of the present invention. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concept of the present invention.

[0049] The invention provides a method and device for dividing islands after a fault in a distribution network under a high-permeability distributed power supply, which can not only ensure continuous and stable power supply of important loads during the fault period, but also restore more other loads, and realize the maximum return of power supply restoration.

[0050] The technical solution of the present invention will ...

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Abstract

The invention relates to an island division method and device for a power distribution network after fault under high-permeability distributed power supply. The method comprises the steps: calculatinga plurality of electric energy parameters of each time period in fault power failure time, verifying whether each time period meets a constraint condition or not, and searching an important load anda common load according to a certain principle, and achieving the dynamic balance of the power of the whole island by controlling the load, and further achieving the island division. Through the island division method provided by the invention, continuous and stable power supply of important loads in the fault period can be ensured, more other loads can be recovered, and the maximum power supply recovery benefit is realized.

Description

technical field [0001] The invention relates to the field of distribution network and related technologies, in particular to a method and device for dividing islands after a fault in a distribution network under a high-permeability distributed power supply. Background technique [0002] With the continuous development of the power grid and the maturity of distributed power generation technologies such as wind power and photovoltaics, a large number of distributed power sources have been connected to the distribution network. Since the distributed power supply has the ability to provide independent power supply, after the distribution network is out of power due to a fault, a power island with a distributed power supply can be formed to operate independently. Efficient and accurate division of islands is a necessary condition for restoration of power supply. There is a lack of efficient island division methods in the prior art, resulting in low power supply yield. Contents ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38H02J3/28
CPCH02J3/388H02J3/28H02J2203/20Y04S10/52
Inventor 朱俊瑞李宝潭张亚萍赵中华茹东武李现伟崔丽艳李民化高峰朱斌斌李燕张玉垒陶颍军
Owner XUJI GRP
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