Optical fiber composite contact case for measuring temperature of high-voltage switch contacts and production method thereof

Abstract

The invention discloses an optical fiber composite contact case for measuring temperature of high-voltage switch contacts and a production method thereof. The optical fiber composite contact case comprises a contact case body which is provided with a chamber for holding a fixed contact. The optical fiber composite contact case is characterized by further comprising a temperature measurement insert, an optical fiber, a heat conducting insert and an optical fiber interface insert, wherein the optical fiber, the heat conducting insert and the optical fiber interface insert are all poured in the temperature measurement insert, one end of the optical fiber is connected with the optical fiber interface insert, fiber bragg grating is formed at the other end of the optical fiber and embedded in the heat conducting insert, the heat conducting insert is exposed from the temperature measurement insert, the contact case body is provided with a through hole communicated with the chamber, and the temperature measurement insert is disposed in the through hole while the heat conducting insert is capable of attaching with the fixed contact. The optical fiber composite contact case has the advantages of high precision, high interference resistance and implementing simplicity and is capable of assisting in acquiring current temperature information of the fixed contact. Further, the production method used by the optical fiber composite case is simple and easy to realize production and process in large scale.

Description

technical field [0001] The invention relates to the technical field of on-line detection of high-voltage switchgear contacts, and more specifically relates to an optical fiber composite contact box for measuring the temperature of high-voltage switch contacts and a preparation method thereof. Background technique [0002] The high-voltage switchgear in power plants and substations is one of the key components to ensure the safe and reliable operation of the power transmission and distribution system. The normal operation of the high-voltage switchgear is related to the stability of the power system. Therefore, it is especially important to ensure the reliable operation of the high-voltage switchgear. According to statistics, a considerable part of the causes of power system accidents are related to thermal problems. [0003] During the long-term operation of the switchgear, the high-voltage switch contacts and busbar lap points in the switchgear usually have excessive contac...

AI Technical Summary

Problems solved by technology

[0007] The first object of the present invention is to provide an optical fiber composite contact box for measuring the temperature of the high-voltage switch contact, which can measure the high-voltage environment without adding any equipment on the high-voltage switch contact or in the contact box Lower the temperature of the high-voltage switch contacts to solve the existing problems that the installation of the fiber grating temperature sensor on the busbar will reduce the air clearance, reduce the insulation level or easily fall off after installation.

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