Method for producing insulator or contact box with temperature and/or voltage sensor

Abstract

The invention discloses a method for producing an insulator or a contact box with a temperature and / or voltage sensor. The method comprises the following steps of: a) loading an insert and the sensor into a mold, and preheating; b) mixing materials; c) pouring; d) demoulding; and e) post-curing. Compared with the prior art, the invention has the advantages that: 1) the voltage or / and temperature sensor is sealed inside the contact box or the insulator, so that the interference of outside dirty, light, heat, mechanical deformation and the like to signals is prevented; through an optical fiber transmission signal, the problem of high-voltage insulation is solved and the hidden danger that high voltage enters a low-voltage control system and a communication system is eliminated; 2) the temperature sensor is used to be directly contacted with a detected position, so that the method is accurate in measurement positions and measurement temperatures and high in reliability and safety, and has the characteristics of accurate detection temperature, low discreteness, no temperature upper limit and no temperature compensation simultaneously; and 3) an optical temperature sensor is not subjected to outside electromagnetic interference, so that the stability of a temperature signal is ensured.

Description

technical field [0001] The invention belongs to the technical field of switchgear, and in particular relates to a production method of an insulator or a contact box with a temperature or / and voltage sensor. Background technique [0002] With the vigorous development of the smart grid, there will be greater demands on the monitoring of power equipment. When the power equipment is working, the normal heating of each component should not exceed its maximum allowable temperature, so as to ensure safe operation. Temperature is one of the important parameters to measure the operating state of power equipment. Switchgear is one of the key equipment in the power system. Solving the online temperature monitoring of air composite insulated switchgear can prevent overheating accidents of power equipment and improve the reliability of power supply; reduce power failure losses, realize condition-based maintenance, and help power equipment At the same time, my country is vigorously devel...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, there are roughly the following methods for measuring the temperature of the switchgear: wireless electromagnetic emission contact products, optical fiber contact products, and open air infrared contact products, etc., but there are corresponding defects: optical fiber connection transmission The scheme has unsafe hazards such as the risk of pollution flashover on the insulating surface of the optical fiber sealing layer and the difficulty in arranging soft optical fibers; the open air infrared transmission scheme is difficult to install on the handcart because the current conductive arm is basically fully insulated; the radio transmission scheme is due to high The low-voltage end is not connected to the elevator, so it is considered a safe solution. However, it is assembled on the conductive arm or busbar on site in the form of an accessory, which will damage the structure of the conductive arm, affect heat dissipation and insulation, and bring new unsafe hidden dangers.

The high temperature of the conductive arm or the busbar will also affect the stability and life of the converter

Similarly, after the conductive arm is fully insulated, it is difficult to install it on the conductive arm

Moreover, the electromagnetic waves are subject to metal shielding between the compartments of the shell and strong electromagnetic interference from the environment, which also greatly reduces the reliability of signal transmission

[0004] In short, the existing temperature measuring device cannot be installed independently, and must be attached to the conductive arm or busbar of the handcart; the temperature sensing element is not heat-resistant enough, and the impact of high temperature during short circuit is not considered; the impact of large current impact on the product during short circuit is not considered; Did not consider the impact of its installation on the insulation withstand voltage of power equipment; did not consider the stability of the product working in an abnormal high temperature environment; especially without intelligent functions, etc.

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