A method for accurate location of distribution network faults based on data mining

Abstract

The invention provides a data mining-based power distribution network fault precise localization method. Data mining is introduced into the power grid dispatching field; based on Fourier analysis on historical fault trips, a clustering algorithm is adopted to establish the vector cluster of fault trip locations; the location of a tripping switch on which a new fault occurs is judged through calculating the similarity between the fault frequency domain characteristic vector of the new fault and the characteristic vectors of each cluster; and a fault range is locked based on the location of the tripping switch. According to the method, the range of an actual fault is judged through the change of the electric quantity of a high-voltage level outgoing switch, and therefore, the problem of incomplete coverage of special data dispatching networks in China can be solved, especially, problems in fault localization of an urban distribution network and a rural power grid can be solved, accident processing time for the faults of the distribution network and the rural power grid can be shortened, and power outage time can be reduced.

Description

technical field [0001] The invention relates to the application field of intelligent technology for power grid dispatching, and more specifically, relates to a method for accurately locating distribution network faults based on data mining. Background technique [0002] With the continuous deepening of my country's power grid construction, the construction of distribution networks and rural power grids has been continuously strengthened, and the scale of power grids has become larger and larger. But correspondingly, the supporting construction of communication and automation equipment is relatively backward. Since the dispatching data private network has not achieved full coverage of the distribution network and the rural network, when the distribution network and the rural network fail, the dispatching department cannot immediately find the trip information of the switch on the pole, the switching station, and the ring network cabinet, which affects The time for effectivel...

AI Technical Summary

Problems solved by technology

It not only caused economic losses to power grid enterprises and industrial users, but also affected the normal electricity consumption of ordinary residents.

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