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

Kuituoptinen lämpötila-anturi, Älykäs valvontajärjestelmä, Hajautettu kuituoptiikan valmistaja Kiinassa

FJINNO company has developed a temperature measurement scheme using fluorescent optical fiber technology, based on the temperature measurement characteristics of substation equipment. Sitä 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, eristysvaatimukset ovat korkeat, ja sähkömagneettiset häiriöt ovat voimakkaita. They cannot directly measure the hot spot temperature inside electrical equipment. Siksi, it is necessary to find a method that can be applied to hot spot temperature measurement of power systems and electrical equipment.

Fluoresoivan kuituoptisen lämpötilan mittaus technology can solve the problem of hot spot temperature measurement in power equipment. Sillä on suurjännitevastuksen ominaisuudet, korkea eristys, 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: hajautettu kuituoptiikka temperature measurement technology and infrared temperature measurement technology. Niiden joukossa ovat:, 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.

Sitä 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, Suurjännitekojeistot, Korkeajännitteiset virtakiskot, kaapelien päät, jne. The upper computer system consists of a main control room, on-site monitoring devices, jne. The fiber optic temperature measurement device adopts RS485 interface communication method, joka muunnetaan kuituoptisiksi viestintäsignaaleiksi valosähköisten muuntimien kautta, and realizes remote communication with the upper computer system composed of remote main control room, on-site monitoring devices, jne., 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, joka täyttää käytännön vaatimukset. Lämpötilan mittauslaitteella on edullisten kustannusten ominaisuudet, vakaa suorituskyky, vahva käytännöllisyys, fast and stable response, ja yksinkertainen käyttö. Koko järjestelmä toimii luotettavasti ankarissa ympäristöissä, kuten korkeissa lämpötiloissa, korkea paine, voimakas magneettikenttä, sekä syttyvyys ja räjähtävyys, which is beneficial for the power industry