Ring main unit electrical contact temperature measurement sensor

Abstract

The invention discloses a ring main unit electrical contact temperature measurement sensor which comprises a metal shell of which both ends are open. A PCB board of which the middle part is hollowed-out is embedded in the metal shell; a first conductive layer and a second conductive layer are respectively arranged on the inner surface and the outer surface of the PCB board; a temperature measurement chip, a microprocessor, a communication module and a power supply module are arranged on the PCB board; the signal output end of the temperature measurement chip is connected with the signal processing input end of the microprocessor by an electrical signal; the input end of the communication module is in communication connection with the signal processing output end of the microprocessor; thepower supply module comprises a voltage division circuit and a rectification and voltage stabilization circuit; the voltage division circuit comprises a voltage division device; an anode of the voltage division device is electrically connected with the first conductive layer; a cathode of the voltage division device is electrically connected with the second conductive layer; the input end of the rectification and voltage stabilization circuit is connected in parallel with the voltage division device; and the output end of the rectification and voltage stabilization circuit, the microprocessor,the temperature measurement chip and the communication module form a closed electric loop. According to the invention, electric energy at an electrical joint can be collected so as to implement powerself-taking of the temperature measurement sensor.

Description

technical field [0001] The invention relates to the technical field of high-voltage electrical contact temperature measurement, in particular to a temperature measurement sensor for an electrical contact of a ring network cabinet. Background technique [0002] Ring Main Unit (Ring Main Unit) is a group of transmission and distribution electrical equipment (high-voltage switchgear) installed in a metal or non-metallic insulated cabinet or made into an assembled interval ring network power supply unit. Its core part adopts load switches and Fuses are therefore also called high-voltage switchgear. The structure of the ring network cabinet is simple, reliable and safe, the maintenance is small, and the operating cost is low. Compared with the switch cabinet equipped with circuit breakers, the advantages are very prominent, and it is widely used in urban residential quarters, high-rise buildings, large public buildings, and factories. In distribution stations and box-type substa...

AI Technical Summary

Problems solved by technology

The use of batteries has a service life problem. After a period of use, the battery needs to be replaced when the battery is exhausted, and the leakage and explosion of the battery will cause safety hazards.

However, CT has the problems of large volume and inconvenient installation, and it will generate vibration and heat in the super-strong magnetic field, which will cause serious harm to power equipment.

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