On-line monitoring and fault diagnosis apparatus of frequency converter of wind generating set

• Main Authors: MENG ENLONG, WANG LINGMEI, WANG QIANG, YAN ZHUOMIN
• Format: Patent
• Language: Chinese; English
• Published: 13.11.2018
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

The invention discloses an on-line monitoring and fault diagnosis apparatus of a frequency converter of a wind generating set. The on-line monitoring and fault diagnosis apparatus of a frequency converter of a wind generating set includes an acquisition module, a transmission module, and a monitoring analysis module, wherein the acquisition module is connected to a wind power motor for real-time acquisition of the three-phase voltage and current of the frequency converter of the wind power motor; the transmission module is used to transmit the collected three-phase voltage and current to the monitoring analysis module in real time; and the monitoring analysis module is used for obtaining stator and rotor current spectrograms of the wind generating set, determining the fault conditions of the stator and/or the rotor according to the spectrograms, at the same time converting the received three-phase current values into Park vectors, and determining a turn-to-turn short-circuit fault of three-phase windings acco