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Power distribution network medium-low voltage topology identification method and system based on power line carrier and information fusion

A technology of distribution network and topology, which is applied in the direction of distribution line transmission system, information technology support system, electrical components, etc., can solve the problem that the distribution network topology model has a huge workload, the consistency cannot be guaranteed, and it is difficult to guarantee the distribution network topology. Issues such as model integrity and correctness

Active Publication Date: 2021-03-12
NARI NANJING CONTROL SYST +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, electric power enterprises mainly maintain manual maintenance when maintaining the topology of the power grid. Due to the large scale of the distribution network, the large number of equipment, and the complex structure, relying on manual maintenance of the distribution network topology model has a huge workload and poor visibility of model information, making it difficult to ensure power distribution. Integrity and correctness of the network topology model, there are problems such as low quality of power distribution topology model, incomplete topology model and connection confusion, model changes cannot be perceived, and consistency cannot be guaranteed.

Method used

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  • Power distribution network medium-low voltage topology identification method and system based on power line carrier and information fusion
  • Power distribution network medium-low voltage topology identification method and system based on power line carrier and information fusion
  • Power distribution network medium-low voltage topology identification method and system based on power line carrier and information fusion

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Embodiment 1

[0066] This embodiment introduces a low-voltage topology identification method for distribution networks, which is suitable for execution by distribution master stations. Please refer to figure 1 As shown, the power distribution master station communicates with the intelligent distribution transformer terminal and the intelligent power distribution terminal through a wireless communication network. Specifically, the medium and low voltage topology identification method of the distribution network performed by the power distribution master station includes:

[0067] Send a line transformer topology update instruction to the intelligent distribution transformer terminal, so that the intelligent distribution transformer terminal generates a characteristic current modulation pulse in response to the received line transformer topology update instruction, and couples it to the medium voltage line of the distribution network through the distribution transformer;

[0068] Receive the t...

Embodiment 1-1

[0075] This example specifically introduces an implementation of the method in Example 1. In this embodiment, the aforementioned distribution master station is a distribution automation master station in an existing distribution automation system, which can perform automatic operation monitoring on a power distribution network. refer to figure 2 As shown, the topological relationship of the medium voltage line transformer is the topological relationship between the medium voltage line of the distribution network and the user transformer, such as the line transformer topology relationship between the 10kv line and multiple user transformers.

[0076] 1. About the triggering of medium and low voltage topology identification process

[0077] refer to figure 1 As shown, the master station of distribution automation responds to the state change of the distribution network line, and sends a line change topology update command to the intelligent distribution transformer terminal; ...

Embodiment 2

[0110] Based on the same inventive concept as Embodiment 1, this embodiment introduces a low-voltage topology identification system for distribution networks. Refer to figure 2 As shown, the system includes a power distribution master station, an intelligent power distribution terminal installed on a medium-voltage line, and an intelligent distribution transformer terminal installed in a low-voltage station area;

[0111] The power distribution master station sends a line transformer topology update command to the intelligent distribution transformer terminal, and the intelligent distribution transformer terminal generates a characteristic current modulation pulse in response to receiving the line transformer topology update command, and couples it to the medium voltage line of the distribution network through the distribution transformer;

[0112] The intelligent power distribution terminal detects the characteristic current pulse on the medium-voltage line of the distributio...

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Abstract

The invention discloses a power distribution network medium-low voltage topology identification method and system, and the method comprises the steps that a power distribution main station transmits aline transformer topology updating instruction to an intelligent distribution transformer terminal, thereby enabling the intelligent distribution transformer terminal to generate a characteristic current modulation pulse, and enabling the characteristic current modulation pulse to be coupled to a medium-voltage line through a power distribution transformer; the intelligent power distribution terminal detects the characteristic current modulation pulse, analyzes the characteristic current modulation pulse to judge a medium-voltage line to which the characteristic current modulation pulse belongs, and sends topology updating information to the power distribution main station; the power distribution main station obtains a voltage line transformation topological relation in the power distribution network according to the received topological updating information; each intelligent distribution transformer terminal carries out low-voltage topology identification on the area where the intelligent distribution transformer terminal is located by means of broadband carrier communication, and sends low-voltage topology identification information to the power distribution main station; and the power distribution main station updates the real-time topological structure according to the voltage line transformation topological relation and the low-voltage topological identification information in the power distribution network. According to the power distribution network medium and low voltage topology identification method and system, manual configuration is not needed, the identification result is complete and accurate, and accurate topology information support can be provided for intelligent application of the power distribution network.

Description

technical field [0001] The invention relates to the technical field of power system distribution automation, in particular to a middle and low voltage topology identification method of a power distribution network based on power carrier and information fusion. Background technique [0002] At present, electric power enterprises mainly maintain manual maintenance when maintaining the topology of the power grid. Due to the large scale of the distribution network, the large number of equipment, and the complex structure, relying on manual maintenance of the distribution network topology model has a huge workload and poor visibility of model information, making it difficult to ensure power distribution. Integrity and correctness of the network topology model, there are problems such as low quality of power distribution topology model, incomplete topology model and connection confusion, model changes cannot be sensed, and consistency cannot be guaranteed. Contents of the inventi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J13/00H02J3/00H04B3/54
CPCH02J13/00007H02J13/00022H02J3/00H04B3/54Y04S40/126Y04S40/121Y02B90/20
Inventor 王元元孙保华张明张佳琦李永辉张蓓蓓黄素娟杜红卫马洲俊
Owner NARI NANJING CONTROL SYST
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