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A Topological Analysis Method for Distribution Networks Across Voltage Levels

A technology of topology analysis and distribution network, applied in the field of topology analysis, can solve the problems of asymmetrical lines, random structures, and various wiring methods of distribution networks, etc., and achieve the effects of good stability, reduced time loss, and correct algorithms

Active Publication Date: 2017-05-10
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The topology analysis of the three-phase balanced network is a classic and mature technology, but the distribution network spanning multiple voltage levels has various wiring methods, asymmetrical lines, and random structural forms, so the classic topology analysis method cannot be fully applied

Method used

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  • A Topological Analysis Method for Distribution Networks Across Voltage Levels
  • A Topological Analysis Method for Distribution Networks Across Voltage Levels
  • A Topological Analysis Method for Distribution Networks Across Voltage Levels

Examples

Experimental program
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Embodiment 1

[0049] like Figure 1-6 As shown, the inventive method of this example is now based on the Matlab platform, taking the IEEE8500 node 115kV / 12.47kV / 0.24kV distribution network system as the application object, and establishes figure 1For the data structure shown, perform topology analysis according to the following steps and methods:

[0050] Step 1 Use the power supply as the first member of the search queue to analyze the bus topology; see the data flow diagram figure 2 , see the program flow chart image 3 .

[0051] Step 1-1: Read the current bus from the search queue, and judge whether the current bus has been numbered. If yes, go to step 1-3, otherwise go to step 1-2.

[0052] Step 1-2 When the number of branches of the temporary section is not 0, store the temporary section in the section connection array; clear the temporary section, then number the bus, store the bus in the temporary section, and update the area The number of the segment boundary branch about this...

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Abstract

The invention relates to a topology analysis method for a power distribution network crossing voltage grades. The topology analysis method comprises the processes of bus topology, node topology and dynamic topology on the basis of a data structure. According to the bus topology process, buses are numbered, a section connection array is established, and depth-first search is carried out on a power distribution network with a balance bus as an initial point on the basis of input data. According to the node topology process, nodes are numbered, and a network node admittance matrix is established. According to the dynamic topology, the node admittance matrix is made to track changes of an electrical power system. The method can process the network topology of the power distribution network of a looped network, multiphase lines and dynamic topology, and solves the problems confronted by topology analysis of the power distribution network crossing the voltage grades.

Description

[0001] Technical field: [0002] The invention relates to a topology analysis method, in particular to a topology analysis method of a distribution network across voltage levels. [0003] Background technique: [0004] Due to the limitation of computing resources, traditional distribution network analysis generally takes a single feeder as the basic unit, and calculates and analyzes the feeder and its included equipment; It makes the scientific computing for the whole network possible, and opens up the way for more comprehensive, accurate and fast distribution network computing analysis and application practice. Topology analysis establishes data structures for various advanced applications of distribution network automation. The topology analysis of three-phase balanced network is a classic and mature technology, but the distribution network spanning multiple voltage levels has various wiring methods, asymmetric lines, and random structural forms, so the classical topology an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q10/06G06Q50/06
Inventor 何开元刘科研孟晓丽贾东梨胡丽娟刁赢龙
Owner STATE GRID CORP OF CHINA