Research on Topology Automatic Recognition Technology of Medium Voltage Equipment in Distribution Network

The topological structure of the power grid is an intuitive reflection of the power transmission path and is an important power model information that determines the results of various power analysis and calculations. It plays a vital role in the operation of the power grid. At present, in the field of power distribution, relying on operation and maintenance personnel to maintain in the production management system, there are deviations between the data and the actual situation; especially in the case of a large number of equipment, the inaccuracy of the topology and the lagging update seriously affect the distribution network Stable operation. Therefore, the operators hope to be able to generate the topology map of the medium voltage distribution grid by themselves with the help of automated means. In this paper, by installing intelligent terminals and topology identification modules on the medium voltage equipment of the distribution network, the equipment is plug and play, and the topology identification information is obtained through the power frequency communication technology and the traveling wave ranging technology, and through the calculation and analysis of the master station, Solve the problem of automatic analysis, realize automatic identification of medium voltage equipment topology and automatic generation of topology diagrams. Through such technology, the topology of the distribution network can be obtained in real time and dynamically, better support the analysis and calculation of the distribution network, and better support the safe and stable operation of the distribution network.