Overload protection device of distribution network FTU power supply

Abstract

The invention discloses an overload protection device of a distribution network FTU power supply, which comprises a distribution network device and a protection device. The distribution network devicecomprises heat dissipation holes, moisture-proof cotton and a circulation assembly. The protection device comprises an input module, a detection module, an insurance module and an interruption module. According to the device, output overload or short circuit caused by switch stalling, coil short circuit, wiring short circuit and the like is protected through the protection device and can be restarted, output is automatically recovered after overload is eliminated, intermittent extrusion drainage is conducted on one side of the device when water is drained through the circulation assembly, andthe heat dissipation capability of the terminal is prevented from being influenced because the moisture-proof cotton is extruded again when absorbing water insufficiently.

Description

technical field [0001] The invention relates to the technical field of power transmission and transformation equipment, in particular to an overload protection device for a distribution network FTU power supply. Background technique [0002] The current distribution switch monitoring terminal (FTU for short) is installed on the column, and performs remote control, remote signaling, and fault detection functions for the switch on the column, and communicates with the distribution automation master station to provide distribution system operation and various parameters. That is to monitor and control the required information, including switch status, electric energy parameters, phase-to-phase fault, ground fault and fault parameters, and execute the commands issued by the power distribution master station, adjust and control the power distribution equipment, and realize fault location and fault detection. Features such as isolation and fast restoration of power to non-faulty a...

AI Technical Summary

Problems solved by technology

Existing power distribution switch monitoring terminals dissipate heat through cooling holes. In rainy days, rainwater easily enters the terminal through the cooling holes, causing internal equipment damage and failure.

Distribution network FTU is the core device of power distribution network automation. Its load is the core device and switch. For the switch itself, its motors, trippers and other loads often have overload, short-circuit and other faults, and the wiring itself is long and prone to failures. Faults such as insulation damage, resulting in power output overload, burning switches, etc.

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