Method for quickly restoring power supply of power distribution network containing distributed power source

A distributed power supply and power supply recovery technology, which is applied in the direction of electrical components, circuit devices, AC network circuits, etc., can solve problems that cannot meet actual requirements, and achieve the effects of improving power supply reliability, reducing search space, and reducing search time

Active Publication Date: 2013-03-27
HOHAI UNIV +4
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  • Abstract
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Problems solved by technology

However, this fault recovery mode that utilizes the distribution network structure and the degree of automation of distribution equipment (sectioners, reclosers, etc.) is generally only used in distribution networks with relatively simple network connections, and when the distribution network contains a large number of When using distributed power, how to make full use of distributed power, this mode will not meet the actual requirements

Method used

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  • Method for quickly restoring power supply of power distribution network containing distributed power source
  • Method for quickly restoring power supply of power distribution network containing distributed power source
  • Method for quickly restoring power supply of power distribution network containing distributed power source

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Embodiment Construction

[0098] Below by embodiment, in conjunction with accompanying drawing, the technical scheme of the present invention is described in further detail:

[0099] figure 1 It is a specific flow chart of the method for fast power supply recovery with distributed power sources provided by the present invention

[0100] Table 1 shows the access point and capacity information of the distributed power source connected in the embodiment.

[0101] name busbar Active power (KW) name busbar Active power (KW) DG1 2 50 DG5 39 400 DG2 8 350 DG6 50 1500 DG3 23 250 DG7 56 250 DG4 38 400 DG8 58 250

[0102] Table 1 69-node system access DG information

[0103] 1. Initialize according to the fault location information and the operating status of the network before the fault, and determine the range of the power-off area and the state of the system after the fault.

[0104] (1) As attached Figure 7 As shown, if a fault occurs ...

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Abstract

The invention relates to a method for restoring power supply of a power distribution network containing a distributed power source. The method is based on heuristic rules, performs dynamic island partition on the distributed power source, utilizes a connection switch to guarantee a power supply restoration scheme of the power distribution network to be adaptive to output changes of the distributed power source and continuous power supply of important users, and enables the intelligent power distribution network to operate safely, reliably and economically. Power supply restoration of the power distribution network comprises the steps that the power failure range of the power distribution network is determined by fault location information and an operating state of the power distribution network before the fault happens; and the distributed power source in the fault area is matched with the connection switch connected with the fault area, corresponding section switches are actuated, and radial operation of the power distribution network except for the distributed power source is ensured. The distributed power source is fully utilized to improve reliability of the power supply of the power distribution network, searching space is greatly reduced, and optimum strategy searching time is shortened. Therefore, the method is suitable for power supply restoration real-time operation of the power distribution network containing the distributed power source.

Description

Technical field [0001] The present invention is a self -healing control system for intelligent distribution networks. The redundancy design designed by the distribution network and the distributed power supply of the grid -connected power supply is divided into dynamic power supply islands, and the coordinated operation of the segment switch and the contact switch is coordinated operation.The realization of the technical solution to the rapid recovery of power supply loads after the fault is the intelligent distribution network, which is the field of power system safely and reliable operation control technology. Background technique [0002] The earth that humans live in survival are encountering severe challenges of the environment and resources, such as global climate change, frequent natural disasters, serious pollution, and increasing traditional energy sources. In order to cope with these challenges to the World Power Industry, smart grids are selected.Intelligent distributi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00
Inventor 陈星莺陈旦刘健陈楷廖迎晨余昆
Owner HOHAI UNIV
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