Ventilation cooling ring main unit fault diagnosis method

Abstract

The invention discloses a ventilation cooling ring main unit fault diagnosis method, and particularly relates to the technical field of ring main unit monitoring. A modeling disconnection fault method database is built, the temperature and humidity of the environment in a ring main unit, the temperature and humidity of a wire box, the temperature and humidity of a switch room, and the temperature and humidity of a cable trough are detected through a temperature sensor and a humidity sensor, current and voltage values of each output / input cable port are detected through a current detector and a voltage detector, when a monitoring signal is transmitted to a computer terminal, signal amplification is carried out on the received tail end in a signal coupling mode, and an infrared thermal image of a heat source of an internal component of the ring main unit in operation is obtained, so the thermal information of each cable port is visualized, the fault is effectively positioned and is convenient to analyze and guide, the fault does not need to be detected in a power-off mode, the purpose of judging the fault information through real-time online monitoring data can be achieved, the fault can be accurately detected, and fault diagnosis of the ring main unit is facilitated.

Description

technical field [0001] The invention relates to the technical field of ring network cabinet monitoring, and more specifically, the invention relates to a fault diagnosis method for a ventilated and cooled ring network cabinet. Background technique [0002] The development of smart grid has risen to the level of national strategy and has become an important part of national economic development and energy policy. The construction goal of smart grid in the field of power distribution requires us to provide safe and reliable intelligent electrical equipment, and the scale of power distribution network With continuous expansion, the use of ring network cabinets in my country's distribution network is huge, and it is also a weak link in the distribution network with frequent faults. Establishing a complete network platform for panoramic online monitoring of ring network cabinets is used for fault warning and system evaluation. The key to the safe and reliable operation of the power...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a fault diagnosis method for a ventilated and cooled ring network cabinet. The technical problem to be solved by the present invention is: when the ring network cabinet fails during operation, professionals still need to visit the site The method of diagnosis, and the need to power off the equipment during inspection and judgment, there is still a certain data difference between the power-off detection process and the power-on operation detection, and the purpose of judging the fault information through real-time online monitoring data cannot be achieved , which is not conducive to the problem of fault diagnosis of the ring main unit

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