Medium-low voltage distribution network electricity larceny prevention method and system based on current monitoring and line topology analysis

The invention discloses a medium and low voltage distribution network electricity larceny prevention method and system based on current monitoring and line topology analysis. The electricity larceny prevention application of a medium-low voltage power distribution network can be met; a measurement system is low in manufacturing cost, high in accuracy, simple to install and can be widely used in apower distribution network; the measurement system can distinguish suspected electricity stealing data in advance; the burden of a communication system and data processing is reduced while the accuracy is ensured; the data processing system is based on an artificial neural network, analyzes historical power consumption data of a user by using K-means, an RF algorithm and a deep belief network (DBN), extracts power consumption characteristics of the user, predicts medium and long-term power consumption of the user, and compares the medium and long-term power consumption with measured data to further confirm whether the