Passive non-contact temperature measuring device for high-voltage bus-bar connection points

Abstract

The invention discloses a passive non-contact temperature measuring device for high-voltage bus-bar connection points. The passive components of the device include an electric energy receiving coil, afirst rectification and voltage stabilization module, a temperature sensor, a first microprocessor and a data wireless transmitting module; and the active components of the device include a voltage reduction module, a second rectification and voltage stabilization module, a second microprocessor, a communication module, a data wireless receiving module, a rectifying module, a high-frequency inversion module, and an electric energy transmitting coil. When device operates, the electric energy receiving coil receives electric energy transferred by the active components, and the first microprocessor sends temperature measured by the temperature sensor and preset ID information to the active components through the data wireless transmitting module; and the second microprocessor controls the high-frequency inversion module to modulate current into high-frequency alternating current and input the high-frequency alternating current to the electric energy transmitting coil, and controls the communication module to output the received temperature and ID information. According to the passive non-contact temperature measuring device of the invention adopted, the temperature measuring components can be split structurally, and the temperature measuring components can obtain electric energy in a non-contact manner. The device has a great application value.

Description

technical field [0001] The invention relates to the technical field of electronic measurement, in particular to a passive non-contact temperature measuring device for a connection point of a high-voltage bus. Background technique [0002] With the continuous development of smart grid technology, more and more high-voltage switch stations need all-round monitoring and control. Among them, whether the high-voltage bus connection point and the movable contact of the high-voltage circuit breaker are in good contact is very critical to the operation of the power system. Since the change of contact resistance will lead to the change of contact temperature, in engineering, it is often judged whether the contact is good by measuring the temperature of the high-voltage bus connection point and the movable contact of the high-voltage circuit breaker. Since the connection points and contacts are on the high-voltage side, it is difficult to obtain electricity, and the current known mea...

AI Technical Summary

Problems solved by technology

Due to the complex environment in the switch cabinet, infrared temperature measurement is easily disturbed by the ambient temperature, making the temperature measurement inaccurate

The temperature measurement method with a battery at the temperature measurement end can accurately measure the temperature, but because the battery needs to be replaced in time, it brings difficulties to the long-term monitoring and maintenance of the system

Surface acoustic wave temperature measurement technology is a non-contact temperature measurement method, but because the technology is not yet mature, its reliability problem has not been fundamentally resolved

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