GENERATOR ROTOR WINDING STATE DETECTION DEVICE AND METHOD

• Main Authors: CHEN, Jingrong, LIU, Chicheng, WANG, Fengjun, SUN, Yanxu, WU, Genyin, WEI, Yuqing, DONG, Juncheng, LV, Zhen, ZHANG, Yuewu, HAN, Xu, SUN, Jianfeng, TIAN, Kunpeng, LU, Lixin, ZHANG, Pian, LIU, Jianxi
• Format: Patent
• Language: Chinese; English; French
• Published: 23.01.2020
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

A generator rotor winding state detection device, belonging to the products in the field of non-destructive detection of a single end of a large generator rotor winding. In the device, a sequential circuit generates full-cycle pulses, and a high-voltage full-cycle pulse matching generator couples the full-cycle wave pulses, which are generated by the timing circuit, into a corresponding transient bidirectional rotating magnetic field pulse. The transient bidirectional rotating magnetic field pulse is conducted to two ends of the generator rotor winding and the main shaft by means of an impedance matching connecting line, and the transient bidirectional rotating magnetic field pulse generates a resonance effect with each large coil in the rotor, the pulse signal coupling feedback acquisition circuit couples all waveforms, which are reflected back by the generator rotor, into a magnetic field waveform, and the magnetic field waveform is transmitted to a data acquisition system by means of an operational amplifi