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Medium-voltage power distribution network topology simplification and abstraction method based on graph model

A distribution network topology and graph model technology, which is applied in electrical digital data processing, CAD circuit design, data processing applications, etc., can solve problems such as poor visualization effect and low analysis efficiency, achieve rapid analysis and visualization, and reduce complexity sexual effect

Active Publication Date: 2020-06-30
STATE GRID JIANGSU ELECTRIC POWER CO ELECTRIC POWER RES INST +3
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  • Application Information

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Problems solved by technology

[0007] Purpose: In order to solve the problems of low analysis efficiency and poor visualization effect caused by differential modeling of medium-voltage distribution network topology for business applications such as distribution network operation and maintenance, regulation and planning, etc., the present invention provides a A graphical model-based abstraction method for medium-voltage distribution network topology simplification

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  • Medium-voltage power distribution network topology simplification and abstraction method based on graph model
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  • Medium-voltage power distribution network topology simplification and abstraction method based on graph model

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Embodiment 1

[0068] The embodiment of the present invention provides a method for simplifying and abstracting the topology of a medium-voltage distribution network based on a graph model, including the following steps:

[0069] Step 1: Obtain the original one-line diagram of each feeder, and construct the original path model of the feeder based on the graph model. The specific example is as follows: figure 2 Shown: T in the figure means distribution transformer, X means tower, TS means tie switch, CB means section switch, L means line; based on figure 2 The traditional "connection point-terminal" model is constructed locally for a single feeder, such as image 3 As shown: the small circle in the figure represents the terminal, and the triangle represents the connection point. It can be seen that the complexity of the traditional model is extremely high; based on figure 2 The graph model is constructed locally for the single feeder shown in , such as Figure 4 Shown: Node represents a ...

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Abstract

The invention discloses a medium-voltage power distribution network topology simplification and abstraction method based on a graph model. The method comprises the steps: modeling the medium-voltage distribution network topology by using the graph model; simplifying a medium-voltage power distribution network, and realizing the progressive abstract simplification of an original path, a key path, acore path and a core extremely-simple path by utilizing technologies such as homomorphic transformation and heavy edge elimination in a graph theory, and providing applicable topology levels for microscopic, mesoscopic and macroscopic application scenes such as feeder line maintenance inspection, distribution network maintenance and regulation and control operation and power grid planning. Through layer-by-layer abstraction, the complexity of the distribution network topology is effectively reduced while the characteristics of the distribution network are maintained, so rapid analysis and visualization of various microscopic, mesoscopic and macroscopic business scenes such as feeder line patrol inspection, distribution network transfer analysis and power grid planning are realized.

Description

technical field [0001] The invention relates to a method for simplifying and abstracting the topology of a medium-voltage distribution network based on a graph model, and belongs to the technical field of distribution network topology analysis. Background technique [0002] As the final link of the power grid to the user, the distribution network directly affects the normal production and living order of the society. Due to geographical dispersion and complex equipment, the distribution network operation and maintenance management method is relatively extensive. The medium voltage distribution network is composed of a large number of feeders, the feeders are connected to each other through tie switches, and there are a large number of section switches inside the feeder. The feeder is a tree with the circuit breaker as the root node and the distribution transformer and tie switch as the leaf nodes. Under normal circumstances, the section switch is normally closed and the ti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/36G06Q50/06G06F113/04
CPCG06Q50/06
Inventor 陈锦铭陈烨焦昊王海林袁宇波崔晋利郭雅娟曾飞刘伟刘建坤史明明袁栋程力涵方鑫李志
Owner STATE GRID JIANGSU ELECTRIC POWER CO ELECTRIC POWER RES INST
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