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Power distribution network modeling method for local topology changes

A local topology and modeling method technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve the problems of cumbersome time occupation, low design work efficiency, affecting human-machine response speed, etc., and achieve the goal of improving efficiency Effect

Inactive Publication Date: 2014-03-12
STATE GRID CORP OF CHINA +1
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Problems solved by technology

[0004] In the design and planning of the distribution network, it is often necessary to modify the distribution network locally and re-analyze the topology of the distribution network. If the global topology analysis and modeling are used for each modification and change, it will be cumbersome and time-consuming. It takes a long time to affect the response speed of man-machine and cause the planning and design of distribution network to be inefficient

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  • Power distribution network modeling method for local topology changes
  • Power distribution network modeling method for local topology changes
  • Power distribution network modeling method for local topology changes

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Embodiment Construction

[0029] Such as figure 1 As shown, a distribution network modeling method for local topology changes of the present invention, it includes the following steps:

[0030] 1) Establish a simplified adjacency list model of the distribution network: consider the distribution network as a graph, regard the switches and T contacts on the feeder as nodes, and regard the feeder segments and distribution transformers as edges. For a distribution network with N nodes, an adjacency table DT with N rows and 5 columns is used to describe its connection relationship. The adjacency table DT is:

[0031]

[0032] in, When the value is 0, 1, 2 or 3, it means that the node type of the node is switch node, T contact, source point (outlet switch) or terminal point; Describe whether each vertex is overloaded for fault area judgment; , , For the node number, fill in -l for free elements.

[0033] 2) Establish a topology editing table: when the local topology of the distribution network ...

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Abstract

The invention discloses a power distribution network modeling method for local topology changes. The power distribution network modeling method for the local topology changes comprises the following steps that (1) a simplified adjacency list DT, with N rows and five columns, of a power distribution network is built to describe the connection relation of the power distribution network; (2) a topology edit table T with fourteen columns is built when the local topology of the power distribution network changes; (3) the affiliation facilitating distribution transformers is adjusted after topology changes happen; (4) edited content in the topology edit table T is added to the adjacency list DT. According to the power distribution network modeling method for the local topology changes, the original topology within the range of influence of the local topology changes of the power distribution network is stored through the topology edit table, and is added to an original model of the power distribution network in the process of increment modeling, a model of the power distribution network can be rapidly generated, the detailed and complicated work that the original topology of the power distribution network is regenerated in the process of global topology analysis and modeling, and secondary search is carried out is avoided, and the efficiency of increment modeling which is adopted when the local topology changes is improved.

Description

technical field [0001] The invention relates to the technical field of distribution network automation systems, in particular to a distribution network modeling method for local topological changes. Background technique [0002] In distribution automation systems, distribution network topology is the basis for distribution network analysis and optimization. The distribution network is a network closely related to geographical information. The direction of the line and the distribution of power distribution equipment and users have geographical characteristics. The actual operation in production management (such as line transformation, power outage maintenance, etc.) also depends on the length and range , distance, relative location and other geographical factors, distribution network topology analysis based on geographic information system (GIS) has become one of the most concerned issues. [0003] The early methods mainly record the connection relationship between distribu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50G06Q50/06
CPCY02E60/76Y04S40/22Y02E60/00
Inventor 刘博林琳王浩尹茂林施冬明王秉震
Owner STATE GRID CORP OF CHINA
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