TY - GEN
T1 - Experimental research and feature extraction on stator inter-turn short circuit fault in DFIG
AU - Zhao, Yihan
AU - Chen, Yu
AU - Wang, Lulu
AU - Ur Rehman, Attiq
AU - Cheng, Yonghong
AU - Zhao, Yong
AU - Han, Bin
AU - Tanaka, Toshikatsu
N1 - Publisher Copyright:
© 2016 IEEE.
PY - 2016/8/18
Y1 - 2016/8/18
N2 - Nowadays the Doubly-Fed Induction Generator (DFIG) is equipped for many large wind farms. Its faults have a deep influence on the safety and effectiveness of the machine and huge cost is required for maintenance. Investigations have revealed that stator inter-turn short circuit fault may lead to more serious problems. More researches are to focus attention on fault detection and preventive maintenance strategies for industrial plant. In this paper, an experimental platform is developed, which can conduct different stator winding inter-turn faults, and some fault feature parameters are extracted and analyzed. Stator line currents are used for calculating RMS, phase difference, negative-sequence, and the Park's vector trajectory's eccentricity as feature parameters. Stator line currents are balanced under normal condition, so the negative sequence of stator currents is almost zero, and their phase differences are about 120°. The park's vector trajectory is a circle under healthy condition, and its eccentricity is near to zero. When stator short circuit fault occurs, the negative sequence and the Park's vector trajectory's eccentricity are increasing as fault degree enlarges, and also the phase differences related to fault phase increase while the other reduces. Finally, the experimental setup simulated the expected stator inter-turn short circuit fault successfully, and the extracted feature parameters will contribute to fault diagnosis of DFIG.
AB - Nowadays the Doubly-Fed Induction Generator (DFIG) is equipped for many large wind farms. Its faults have a deep influence on the safety and effectiveness of the machine and huge cost is required for maintenance. Investigations have revealed that stator inter-turn short circuit fault may lead to more serious problems. More researches are to focus attention on fault detection and preventive maintenance strategies for industrial plant. In this paper, an experimental platform is developed, which can conduct different stator winding inter-turn faults, and some fault feature parameters are extracted and analyzed. Stator line currents are used for calculating RMS, phase difference, negative-sequence, and the Park's vector trajectory's eccentricity as feature parameters. Stator line currents are balanced under normal condition, so the negative sequence of stator currents is almost zero, and their phase differences are about 120°. The park's vector trajectory is a circle under healthy condition, and its eccentricity is near to zero. When stator short circuit fault occurs, the negative sequence and the Park's vector trajectory's eccentricity are increasing as fault degree enlarges, and also the phase differences related to fault phase increase while the other reduces. Finally, the experimental setup simulated the expected stator inter-turn short circuit fault successfully, and the extracted feature parameters will contribute to fault diagnosis of DFIG.
KW - Doubly-fed induction generator
KW - Experimental setup
KW - Fault features
KW - Stator inter-turn fault
UR - https://www.scopus.com/pages/publications/84987898757
U2 - 10.1109/ICD.2016.7547654
DO - 10.1109/ICD.2016.7547654
M3 - 会议稿件
AN - SCOPUS:84987898757
T3 - Proceedings of the 2016 IEEE International Conference on Dielectrics, ICD 2016
SP - 510
EP - 513
BT - Proceedings of the 2016 IEEE International Conference on Dielectrics, ICD 2016
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 1st IEEE International Conference on Dielectrics, ICD 2016
Y2 - 3 July 2016 through 7 July 2016
ER -