Power distribution network topology automatic identification method, device and system based on power line communication

Abstract

The invention discloses a power distribution network topology automatic identification method, device and system based on power line communication. The method comprises the steps of ste 1, collectingID information and state information of each switch node in a power distribution network; step 2, calculating the distance d between every two switch nodes; and step 3, performing power distribution network topology based on distance information identification, ID information and state information between the switch nodes. According to the invention, by adopting a switch node distance measurementalgorithm based on relative clock calculation, the actual distance between the two slave devices is solved by adopting a relative clock calculation principle according to the time scale characteristics and the power line communication rate of the two slave devices in the information interaction process. A collinear judgment principle is combined with an adjacency relation judgment method, a powerdistribution network topology model containing distance identifiers is established, and automatic topology recognition is achieved. The topology information identified by the scheme is more accurate,and the investment cost and the operation and maintenance workload are lower, so that the method has a very high application value.

Description

technical field [0001] The invention relates to a distribution network topology automatic identification method, device and system based on power line communication, and belongs to the technical field of power systems and automation thereof. Background technique [0002] As the terminal link of the power system, the distribution network carries the important mission of directly supplying power to users. Building a strong and intelligent distribution network is an important measure to improve the reliability of power supply. A complete, consistent, accurate, timely and reliable topology model is the basis for realizing the intelligent construction of distribution network, and can provide key support for distribution network dispatching, maintenance and power supply service optimization. [0003] Research on distribution network topology models can be divided into four categories. The first category is to study the description rules of distribution network topology models bas...

AI Technical Summary

Problems solved by technology

However, all the above studies involving topology recognition are based on the intelligent distributed FA system, and a dedicated peer-to-peer communication network needs to be established. The built model can only reflect the adjacency relationship of one device and the investment cost is high. Not conducive to large-scale promotion across the country

[0006] At present, there is no economical and reliable technical solution that can realize the function of automatic topology recognition.

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