How to monitor the temperature of track traction transformers-INNO

Warum müssen Traktionstransformatoren im Schienenverkehr überwacht werden?

Für Schienenfahrzeuge, Der Traktionstransformator ist eines der wichtigsten Geräte und das Herzstück des gesamten elektrischen Traktionssystems. Sein normaler Betrieb hat einen erheblichen Einfluss auf die Gewährleistung des stabilen Betriebs von Schienenfahrzeugen wie Lokomotiven und Hochgeschwindigkeitszügen. Mit dem kontinuierlichen Wachstum der Gesamtkilometerzahl der elektrifizierten Eisenbahnen in China, Auch die Nachfrage nach Traktionstransformatoren steigt; Gleichzeitig, Die Erhöhung des Zuggewichts und die Erhöhung der Zuggeschwindigkeit führen zu einer Verdoppelung des Traktionsstroms. Derzeit, Die überwiegende Mehrheit der Traktionstransformatoren in China arbeitet unter Überlastbedingungen. Verbunden mit den drastischen Änderungen der Zuglast und häufigen externen Kurzschlüssen, the probability of faults occurring has greatly increased.

Seit vielen Jahren, the maintenance of traction transformers in China has always adopted a periodic maintenance system. Although this plan can detect equipment problems within a certain time frame, maintenance personnel cannot select specific maintenance objects before repairing the equipment, and only follow the rules. This will cause blindness in the work and waste a lot of manpower, materielle Ressourcen, and financial resources. daher, online monitoring of traction transformers is particularly important; Unlike State Grid’s development plan for smart power stations, the online monitoring of traction transformers is still in the stage of decentralized monitoring. A monitoring quantity corresponds to a monitoring device, and each device corresponds to a system, und jedes System ist unabhängig voneinander, ohne jegliche Informationsinteraktion mit dem Computerüberwachungssystem, Informationsinseln bilden, was die Online-Überwachung von Bahntransformatoren unwirksam macht. Für Bahntransformatoren ist ein umfassendes Online-Überwachungsgerät erforderlich, die verschiedene Datenmengen umfassend überwachen und einheitlich diagnostizieren kann; Und das Gerät muss der aktuellen Situation gerecht werden, dass Bahnumspannwerke relativ weit entfernt sind und einen kleinen Standort haben.

Temperaturmesssystem für die Wicklung eines Traktionstransformators

Die überwiegende Mehrheit der Fehler, die auf Traktionstransformatoren zurückzuführen sind, sind Überhitzungsfehler. Momentan, Die vorhandenen elektrifizierten Eisenbahn-Traktionstransformatoren in China basieren lediglich auf der Messung der Öltemperatur, um die internen Quellenbedingungen zu bestimmen, and cannot detect the temperature of transformer windings, Eisenkerne, usw., which is inappropriate. FJINNO utilizes a fluorescent fiber optic winding temperature measurement system to directly measure the winding temperature of traction transformers, thereby truly achieving real-time monitoring of faults in traction transformers.

With the continuous development and progress of power technology, the functional demand for transformers is increasing day by day. With the widespread application of traction transformers, while their performance continues to improve, the requirements for their operating environment are also constantly increasing. As the most important environmental factor, the higher the accuracy and effectiveness of temperature control, the more it can improve the operational efficiency of transformers. Der fluoreszierendes faseroptisches Temperaturmesssystem is used to measure the temperature at various points inside the transformer during operation, and is particularly suitable for monitoring the temperature changes of the traction transformer during severe load changes and overloading. Bekanntlich, the thermal time constant of transformer oil is relatively large. daher, changes in load can cause heating changes in the winding core and other components, which require a longer period of time to be reflected through the temperature rise of the oil. The temperature change of the oil cannot reflect the load status of the traction transformer in electrified railways in a timely manner, and abnormal overloading cannot be dealt with in a timely manner.

Advantages of Fluorescent Fiber Optic Temperature Measurement Device for Transformer Windings

The fluorescence fiber optic winding Temperaturregler utilizes the principle of fluorescence fiber optic temperature measurement and installs a fluorescence fiber optic temperature probe on the transformer winding. Through specific analysis algorithms, the real-time temperature value of the winding can be accurately calculated. It has the advantages of maintenance free, calibration free, und hohe Zuverlässigkeit.

The traction transformer winding temperature measurement system adopts fiber optic sensing technology to measure the actual temperature of the transformer winding in real time, which is faster and more accurate than thermocouple measurement, and more comprehensive than the commonly used thermal imaging method for indirect measurement. The fiber optic temperature measurement system has a long operating life, stabile leistung, hohe Genauigkeit, und Haltbarkeit, and has been widely used. The fluorescent fiber optic sensor probe can withstand the initial manufacturing process of transformers, such as kerosene gas-phase drying, heat flow circulation, as well as long-term oil immersion and vibration, without calibration for long-term use, and is stable and reliable. The system reflects the actual temperature of the three-phase winding of the transformer in real-time during operation and sends out real-time over temperature alarm signals, while achieving the purpose of remote transmission of temperature and alarm signals. It is of great significance to optimize transformer performance and improve the safe service life of transformers.