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A AC/DC hybrid high-quality distribution system based on multi-terminal flexible interconnection technology

An AC-DC hybrid, multi-terminal flexible technology, applied to AC network circuits, single AC networks with different frequencies, and AC networks with the same frequency from different sources, etc., to improve feeder load balance, continuously controllable power, distribution The effect of electroflexibility

Inactive Publication Date: 2019-01-11
WUHAN UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the limitations of the existing distribution network structure, it is difficult for these schemes to further play a greater role in the sharing of renewable energy power fluctuations, flexible power flow control, and improvement of power supply reliability.

Method used

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  • A AC/DC hybrid high-quality distribution system based on multi-terminal flexible interconnection technology
  • A AC/DC hybrid high-quality distribution system based on multi-terminal flexible interconnection technology
  • A AC/DC hybrid high-quality distribution system based on multi-terminal flexible interconnection technology

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Embodiment Construction

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0033] figure 1 It is an AC-DC hybrid high-quality power distribution system based on multi-terminal flexible interconnection technology, which is characterized by including: the first medium-voltage AC circuit breaker, the second medium-voltage AC circuit breaker, the AC tie switch, the first medium-voltage AC busbar, the second medium-voltage AC High-voltage AC busbar, first three-port AC-DC flexible interconnection switch, second three-port AC-DC flexible i...

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Abstract

The invention provides an AC / DC hybrid high-quality distribution system based on a multi-terminal flexible interconnection technology. The invention comprises the following steps: A first medium voltage alternating current circuit breaker A second medium voltage alternating current circuit breaker AC contact switch, a first medium voltage alternating current bus bar, a second medium voltage alternating current bus bar, a first three-port AC / DC flexible interconnecting switch a second three-port AC / DC flexible interconnected switch, a first medium-voltage DC circuit breaker, a second medium-voltage DC circuit breaker, a medium-voltage DC bus, an energy storage system, a first flexible DC switch, a low-voltage DC circuit breaker, a low-voltage DC bus, a second flexible DC switch, a flexibleAC / DC switch, a DC new energy source, and an AC new energy source. The invention has the advantages that the loss of the energy storage conversion can be reduced, high-quality electric energy can be provided, and seamless power supply can be realized.

Description

technical field [0001] The invention belongs to the technical field of power grid equipment and operation control, and in particular relates to an AC-DC hybrid high-quality power distribution system based on multi-terminal flexible interconnection technology. Background technique [0002] In recent years, with the rapid development of my country's economy and the deepening of urbanization, the power load of modern industrial parks has become increasingly dense, and the planning and layout of power corridors have become increasingly tense, which puts forward higher requirements for the power supply capacity of traditional distribution networks. At the same time, with the development of diversified loads such as new energy and power electronics technology, a large number of new forms of power sources such as DC and variable frequency AC have appeared in the traditional distribution network, and the proportion of DC or loads containing DC links in the system has also increased r...

Claims

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Application Information

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IPC IPC(8): H02J3/02H02J3/06H02J3/00
CPCH02J3/02H02J3/06H02J3/0073
Inventor 孙建军查晓明郝利东陈业伟杨勇李继红陆翌王朝亮许烽宣佳卓
Owner WUHAN UNIV
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