Line topology identification method and device

Abstract

The embodiment of the invention discloses a line topology identification method and device, and specifically, each node connected with a line can comprise a communication module and an impedance adjustment module, and when the impedance adjustment module of a target node does not act, a processing device obtains a corresponding first signal attenuation value when any two other nodes communicate. And when the impedance adjusting module of the target node acts, the processing device obtains a second signal attenuation value corresponding to any two other nodes during communication, and determines a box body to which each node belongs according to the first signal attenuation value, the second signal attenuation value and a preset attenuation threshold value. The box body to which each node belongs is determined by adjusting the impedance adjusting module in the node, and no extra current needs to be injected, so that the electric energy quality is improved, and the identification cost is reduced.

Description

technical field [0001] The present application relates to the field of communication technologies, and in particular, to a line topology identification method and device. Background technique [0002] The medium and low voltage distribution network of electric power usually includes a large number of power distribution equipment, such as transformers, primary power distribution cabinets, secondary power distribution cabinets, tertiary power distribution cabinets, even more power distribution cabinets, and branch power lines. like figure 1 As shown, including transformers, power distribution cabinets, branch boxes, and user meter boxes. Distribution boxes and power lines at all levels can form a tree-shaped physical topology or a chain-shaped physical topology. In the process of managing the distribution network, power operators usually use the visualized physical topology map of power lines to locate or repair faults. However, when the power line network diagram of the di...

AI Technical Summary

Problems solved by technology

However, when the power line network diagram of the distribution network is lost or the network diagram is not updated in time after reconstruction and expansion, or even not implemented according to the power line network diagram during construction, the operation and maintenance personnel cannot obtain accurate line topology.

[0003] When the operation and maintenance personnel cannot obtain accurate line topology, when the residential users lose power, they cannot judge which line or which level of switch is faulty, and cannot quickly locate the fault

Or, when a real-time planned power outage is required, the switch to be disconnected cannot be determined, and a wrong power outage operation occurs

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