Faseroptischer Temperatursensor, Messung der Wicklungstemperatur eines öleingetauchten Transformators, Installation, Vorteile, Produzierender Zulieferer,-INNO

Die Temperatur der ölgefüllten Transformatorwicklung bestimmt die Leistung und Alterungsrate des Transformators. Wenn die Isolationstemperatur der Transformatorwicklung im Bereich von liegt 80-130 °C, Die Alterungsrate der Isolierung verdoppelt sich pro Jahr 6 ℃ Temperaturanstieg. Das heißt, für jeden 6 ℃ Temperaturanstieg, die Lebensdauer der Isolierung verringert sich um die Hälfte. Das ist das “Sechs-Grad-Regel” Alterung der Isolierung. Wenn die Hot-Spot-Temperatur der Wicklung zu hoch ist, die Lebensdauer des Transformators wird stark verkürzt, und sogar einen Brand verursachen; Wenn die Temperatur zu niedrig ist, die Betriebseffizienz des Transformators wird stark reduziert, zu gewissen wirtschaftlichen Verlusten führen. Deshalb, Eine zuverlässige Überwachung der Transformatorwicklungstemperatur ist von großer Bedeutung, um den langfristig sicheren Betrieb von Transformatoren zu gewährleisten und ihren wirtschaftlichen Wert zu steigern.

Oil immersed transformers have characteristics such as high temperature, Hochspannung, hohes Magnetfeld, and small space inside, making traditional temperature measurement equipment difficult to apply in such environments. Temperature sensors need to have characteristics such as strong electromagnetic interference resistance, gute Isolationsleistung, Langzeitstabilität, Kleinformat, hohe Temperaturbeständigkeit, and firmness. With the continuous development of various new materials and processes, Fluoreszenzfaser -Temperaturmessung technology has also emerged, which can be applied in the above-mentioned harsh environments.

For oil immersed power transformers, when the load or ambient temperature is too high, or when the internal cooling oil passage of the winding is blocked, the winding temperature of the transformer will abnormally rise. An dieser Stelle, the transformer will withstand a certain degree of danger, and the highest temperature that occurs in a certain part of the transformer winding is called the transformer hot spot temperature. Once the hot spot temperature exceeds the insulation limit temperature of the transformer, it will lead to insulation aging or damage, resulting in shortened transformer life and even damage to the main body.

In den letzten Jahren, fiber optic technology has experienced rapid development and widespread application, and the application of fiber optic in the field of sensing technology has received attention from people. The characteristics of fiber optic sensors are good electromagnetic insulation performance, Hohe Spannungsfestigkeit, Korrosionsbeständigkeit, und hohe Temperaturbeständigkeit. They can be used in harsh conditions such as strong electromagnetic fields and strong radiation. Mit der Entwicklung der faseroptischen Sensortechnologie, more and more countries are paying attention to direct measurement methods. Direct measurement methods involve burying fiber optic sensors directly in transformer windings and using temperature measuring instruments to measure and display winding temperatures. Unlike the traditional method of measuring the top or bottom oil temperature, LWL-Temperaturmessung can be directly achieved through sensing sensors placed in the winding to achieve true and accurate measurement of hot spot temperature, was die Vorteile von direkt hat, Echtzeit, und genaue Messung.

The most accurate method for measuring the temperature of transformer windings is the direct measurement method, which obtains the hot spot temperature of the winding by embedding a Temperatursensor in the winding. For large, high voltage level oil immersed transformers, due to the long production cycle, expensive price, and significant impact on the power grid, das LWL-Temperaturmessung probe is installed inside the transformer winding coil. The fiber optic probe inside the transformer will be exposed to environments such as transformer oil immersion, Hochspannung, and high temperature for a long time. Deshalb, in order to ensure that the fiber optic probe can effectively measure the temperature of the winding coil for a long time, the fiber optic probe needs to have a very stable structure. FJINNO is a Chinese technology manufacturer with strong strength.