Topology identification method of low-voltage power distribution network topology identification system

Abstract

The invention discloses a topology identification method of a low-voltage power distribution network topology identification system. A main station and a concentrator are in wireless communication orwired network communication, implementation is simple and convenient, the concentrator and the node information collector adopt power line carrier communication, and the concentrator and the node information collector which can communicate with each other are ensured to belong to the same transformer area, so that the comparison of voltage zero crossing point time in the same transformer area in the step 2 is facilitated, and the problem of confusion of data among different transformer areas is avoided. Besides, according to the topology identification method, the voltage zero-crossing time ofeach node is compared with the voltage zero-crossing time of an A-phase line, a B-phase line and a C-phase line in the same transformer area to identify an in-phase line node group; and the identification method is simple and easy, and is beneficial to determining that the nodes in the correlation comparison in the step 3 are the nodes connected to the same phase line, and is beneficial to improving the correlation comparison efficiency in the step 3.

Description

technical field [0001] The invention relates to a topology identification method of a low-voltage distribution network topology identification system. Background technique [0002] As an important part of the power distribution system, the low-voltage power distribution network is directly connected to a large number of residents, businesses and commercial customers. With the popularity of electric vehicles, charging equipment and grid-connected distributed generation, these have brought new challenges to the power quality, power supply reliability and economic operation of low-voltage distribution networks. In low-voltage distribution networks, missing or inaccurate network topology information is a concern. Accurate user-side phase and topology connection relationship are of great significance to the operation and maintenance management of distribution network. Typically, utilities record and manage network connectivity information for various distribution equipment and ...

AI Technical Summary

Problems solved by technology

But now there are mainly two problems in the following aspects, one is the crosstalk interference between the stations; the other is cross-phase copying

All of these make the reliability of the topological information of the original station area low