Low-voltage distribution network topology identification system and method based on power line carrier N-line current monitoring

Abstract

The invention discloses a low-voltage distribution network topology identification system based on power line carrier N-line current monitoring. The system consists of a concentrator and a plurality of topology identification devices, wherein the topology identification devices are respectively disposed on branch boxes of a power grid with a to-be-identified topology relation; the topology identification device comprises an N-line carrier signal sensor and a topology identification processing terminal; the topology identification processing terminal is arranged at the bus end of the branch boxand used for completing processing of monitoring signals; the N-line carrier signal sensor is arranged on the N line of each branch line to complete the monitoring of the current signals of the pastpower line carriers; and the topology identification processing terminal is electrically connected with the concentrator. Through the structural arrangement of the system, the system only needs to install a complete device on the branch node, and does not need to install any device on the side of the electric meter, thereby reducing the installation complexity, improving the accuracy, and reducingthe investment cost.

Description

technical field [0001] The invention belongs to the technical field of topology identification, and in particular relates to a low-voltage distribution network topology identification system and method based on power line carrier N line current monitoring. Background technique [0002] In the "transmission-transformation-distribution-use" links of the smart grid, the low-voltage station area directly provides the required power for various parts of the country's economy and people's lives. In order to effectively improve the reliability of power supply, improve the quality of power supply, improve the level of operation management and power supply service capabilities, in recent years, the power grid company has strengthened the construction and investment of the station area. During the planning and reconstruction of cities and villages in various places, along with the new construction, expansion, operation and maintenance of the power grid, changes in the power distributi...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that there are currently many technical solutions based on the application of power line carrier to realize topology, but the effect is not ideal in the actual application environment, and the success rate of topology recognition cannot meet the needs

Images