The Technology Research Of The Diagnosis For Tractive Transformer In Electric Locomotive

With the rapid progress of electrified railway in China, the safety driving becomes more and more important in the railway system. As one of the most important devices in the electric locomotive, the traction transformer is used for voltage transformation and power distribution, its performance of safety and reliability will impact whether the electrified railway system could operate safely directly.At first, this thesis expound the present situation and significance of electric locomotive traction transformer fault diagnosis, and also explained the internal component and many kinds of fault happened frequently. On this basis, this thesis expound the diagnosis algorithm adopted in the electric locomotive traction transformer fault diagnosis, and this thesis also introduced the software constitution and hardware constitution of the electric locomotive traction transformer diagnosis system. At last, the thesis executed the test experiment of the electric locomotive traction transformer diagnosis to analysis the many kinds of the fault happened in the electric locomotive traction transformer.This thesis expound the hardware and software design of the electric locomotive traction transformer diagnosis system and its realization progress. The system adopted hierarchical design method The whole system is constitute of power module,the CPU module,the FLASH module and the LCD display module. The system adopted the current generator and data sample board to generate the analog signal needed, then, after the sample and analysis by the CPU, the system adopted the Wavelet Analysis and BP Neural Network to extract and analysis the feature signals of the fault Finally, this thesis execute experimental verification and data test for the system and execute the numerical analysis for the test result of the system.