Application and Solution of Fluorescent Fiber Optic Temperature Measurement in Power System

Senzor temperature od optičkih vlakana, Inteligentni sustav nadzora, Distribuirani proizvođač optičkih vlakana u Kini

FJINNO company has developed a temperature measurement scheme using fluorescent optical fiber technology, based on the temperature measurement characteristics of substation equipment. U fluorescence fiber temperature measurement technology based on rare earth materials has a temperature signal that is independent of the intensity of fluorescence conduction. There is no need for electrical connection between the measurement point and the measurement signal receiving part, which fundamentally solves the problem of temperature measurement in harsh environments such as high voltage, strong electromagnetic, flammable and explosive, and has become the preferred solution for temperature measurement of substation equipment.

Temperature measurement is an important means of fault detection and maintenance in power systems. In current hot spot temperature measurement in power systems, traditional electrical signal temperature sensors are mainly used. These sensors are not suitable for situations where the power system voltage is high, Zahtjevi za izolaciju su visoki, a elektromagnetske smetnje su jake. They cannot directly measure the hot spot temperature inside electrical equipment. Stoga, it is necessary to find a method that can be applied to hot spot temperature measurement of power systems and electrical equipment.

Mjerenje temperature fluorescentnih optičkih vlakana technology can solve the problem of hot spot temperature measurement in power equipment. Ima karakteristike otpora na visoki napon, Visoka izolacija, and resistance to electromagnetic interference, and is the future development direction of hot spot temperature measurement technology for electrical equipment in power systems. Fiber optic temperature measurement technology mainly includes two types: distributed fiber optic temperature measurement technology and infrared temperature measurement technology. Među njima, infrared temperature measurement technology can only measure the surface temperature of electrical equipment and cannot measure the hot spot temperature inside electrical equipment. The installation method of fluorescent fiber optic temperature measurement technology is the same as that of conventional electrical signal temperature sensors, and can be directly embedded in electrical equipment, so it has strong convenience in use.

U fluorescence fiber optic temperature measurement device system is divided into two parts: the bottom temperature measurement unit and the upper computer system. The bottom temperature measurement unit consists of multiple fiber optic temperature measurement devices such as transformers, visokonaponski rasklopni uređaji, Visokonaponske sabirnice, Glave kabela, itd. The upper computer system consists of a main control room, on-site monitoring devices, itd. The fiber optic temperature measurement device adopts RS485 interface communication method, koji se pretvara u optičke komunikacijske signale putem fotoelektričnih pretvarača, and realizes remote communication with the upper computer system composed of remote main control room, on-site monitoring devices, itd., to improve the reliability and anti-interference ability of the communication system.

A complete temperature measurement scheme was designed based on fluorescence fiber optic temperature measurement technology and combined with substation equipment. After experimental verification, the temperature measurement range of the temperature measurement system reaches -40 ℃ to 200 °C, with an accuracy of 1 °C, koji ispunjava praktične zahtjeve. Uređaj za mjerenje temperature ima karakteristike niske cijene, stabilne performanse, Snažna praktičnost, fast and stable response, i jednostavan rad. Cijeli sustav pouzdano radi u teškim okruženjima kao što su visoke temperature, visoki tlak, Jako magnetsko polje, te zapaljivost i eksplozivnost, which is beneficial for the power industry