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Impulse frequency response analysis is one of the diagnostic methods for online detecting power transformer winding deformation, however, the existing method of obtaining impulse frequency response curves Fast Fourier Transform is actually not suitable because of its bases. A signal processing method based on Short Time Fourier Transform is proposed in this paper, the simulation and experiment are...
Seven hundred fifty kilovolt extra-high voltage (EHV) shunt reactors are important power equipment that stabilize the normal operation of an entire 750 kV power grid. Internal winding faults of a reactor could be a difficult issue when the reactor is in service, and result in sudden equipment failure and significant economic losses. To prevent sudden catastrophic failure of equipment, online detection...
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