Power distribution network reconstruction method and system

A technology for distribution network reconstruction and distribution network, which is applied in system integration technology, information technology support systems, instruments, etc., to achieve the effect of speeding up the optimization speed, reducing the scope of optimization, and reducing the time required for reconstruction.

Inactive Publication Date: 2014-12-24
CHINA ENERGY ENG GRP GUANGDONG ELECTRIC POWER DESIGN INST CO LTD
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Problems solved by technology

[0004] Based on this, it is necessary to provide a distribution network reconfiguration method that can quickly obtain the optimal topology of the dis

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  • Power distribution network reconstruction method and system
  • Power distribution network reconstruction method and system
  • Power distribution network reconstruction method and system

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[0021] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0022] see figure 1 , which is a flowchart of an embodiment of a distribution network reconfiguration method in the present invention.

[0023] A distribution network reconfiguration method, comprising the steps of:

[0024] S101: Establish an association matrix model according to the connection relationship between parent nodes and child nodes and branch switches in the distribution network, and assign values ​​to the on-off states of the branch switches to form an association matrix set, wherein the association matrix set includes at least an incidence matrix;

[0025] The parent node and child nodes may be loads or power sources in the distribution network. Such as figure 2 As shown in , it is a schematic diagram of distribution network nodes in an embodi...

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Abstract

The invention discloses a power distribution network reconstruction method and system. The method comprises the steps that an incidence matrix model is established according to the connection relation of father nodes and son nodes in a power distribution network and branch switches, and the on-off states of the branch switches are assigned to form an incidence matrix set; all incidence matrixes are used for simulating a topological structure of the power distribution network, whether the topological structure has a looped network is judged, if the topological structure has a looped network, the incidence matrixes corresponding to the topological structures are eliminated, if the topological structure has no a looped network, the topological structure is subjected to load flow calculation, and if the topological structure does not meet load flow constraints, the incidence matrixes corresponding to the topological structure are eliminated; a target function and constraint conditions are established, the target function is solved through adoption of an improved particle swarm optimization according to the restraint conditions so as to obtain the best topological structure; the power distribution network is reconstructed according to the best topological structure. The power distribution network reconstruction method and system can reduce needed time of power distribution network reconstruction by improving the optimizing speed.

Description

【Technical field】 [0001] The invention relates to the field of power electronics automation, in particular to a distribution network reconfiguration method and system in a distribution network. 【Background technique】 [0002] The distribution network is a network in which the low-voltage side of the secondary step-down substation in the power system supplies power to users directly or after step-down. It is composed of overhead lines, power distribution stations or column-mounted step-down transformers and users. The main function of the distribution network is to receive electric energy from the transmission network, and then distribute the received electric energy through distribution transformers and lines or directly consume electric energy. With the sharp increase of power load, the scale of power distribution network is getting larger and larger. In order to adapt to the external conditions of increasingly scarce urban environmental space resources, reduce the network ...

Claims

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Application Information

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IPC IPC(8): G06Q50/06
CPCY02E40/70Y04S10/50
Inventor 辛文成周敏朱海华陈荔孔志达贺艳芝简翔浩
Owner CHINA ENERGY ENG GRP GUANGDONG ELECTRIC POWER DESIGN INST CO LTD
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