All-fiber passive electrified body temperature monitoring method and device

Abstract

The invention discloses an all-fiber passive electrified body temperature monitoring method and device. The method comprises the following steps: determining a contact position and a plurality of monitoring point positions of the all-fiber passive electrified body; determining a plurality of contact resistors, and respectively determining parameters of each contact resistor; connecting each contact resistor with an all-fiber passive electrified body, and measuring the temperatures of the contact position and the plurality of monitoring point positions after electrification; and establishing a fitting relationship between the temperature of the contact position and the temperature of the plurality of monitoring point positions, and calculating the temperature of the contact position through the fitting relationship. According to the method and device, the temperature data of the electrified body can be monitored in real time, the defects of low efficiency, leak detection, information isolated island and the like caused by manual inspection can be effectively avoided, and integrated and informatization construction of electrified body temperature monitoring is realized.

Description

technical field [0001] The invention relates to the technical field of on-line temperature monitoring of high-voltage switchgear, and more specifically, to a method and device for monitoring the temperature of an all-fiber passive electrified body. Background technique [0002] In recent years, with the rapid development of science and technology, people's demand for electricity is increasing, resulting in a sharp increase in electricity load. During the operation of the power plant, the contact parts of some electrical equipment will have surface oxidation and loose contacts. The temperature is too high or even burned, causing power outages and other hazards; some equipment due to its own structure and the friction and rotation in the working process cause the temperature to rise. Excessively high temperature will cause the aging of the equipment, and in severe cases, it will cause a fire and endanger people's health. Life and property safety, causing heavy losses. And su...

AI Technical Summary

Problems solved by technology

[0005] At present, there are few solutions for online monitoring of the temperature of power equipment, including: monitoring based on temperature sensors and using ZigBee wireless modules. However, the commonly used temperature sensors are thermistor sensors and thermocouple sensors. Thermistor sensors have extremely linearity Poor, difficult to give normalized and thermistor curves, and the small size also makes it more sensitive to natural errors, which will cause permanent damage if it is exposed to high heat

Thermocouple sensors have relatively low sensitivity and are easily affected by interfering signals and by temperature drift of the preamplifier

The emergence of ZigBee technology has accelerated the development of the Internet of Things, but ZigBee wireless modules have great disadvantages: (1) The network addresses assigned to nodes in ZigBee PNA can be changed, and even have the same name under certain conditions, so it cannot be guaranteed Data is sent to the correct device, especially in environments with strong electromagnetic interference

(3) Capacity limitation, the flash memory used by ZigBee is small, it is difficult to meet their functional requirements for some advanced applications

Therefore, the system is very unstable when monitoring the temperature of power equipment. In addition, multiple sensors need to be placed. When the number of monitoring points is large, it will increase the difficulty of networking and it is very inconvenient to use. The lower measurement error increases

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