On-Line Monitoring Method of Drive Motor Operational for On-Load Tap Changers

Abstract:

Motor-driven on-load tap changers (OLTC) operational within power transformers are extensively used for voltage regulation in power systems, whose principal malfunctions or failures are of mechanical type. Hence, monitoring of the mechanical characteristics of OLTC is of utmost significance. Based on a rotating angular transducer as well as digital signal processing techniques, an on-line monitoring methodology is established to measure, analyze and evaluate the dynamic or transient changes of the rotating angle of the drive motor operational in an OLTC, which can effectively indicate the underlying deficiency or even potential fault of the mechanical drive system connected to the motor. Computer simulations and experiments are carried out respectively, both showing the proposed on-line monitoring scheme is feasible and applicable.

• Periodical: Applied Mechanics and Materials (Volumes 475-476)
• Pages: 59-62
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.475-476.59
• Online since: December 2013
• Authors: Tao Liu, Tong Zhao*, Liang Zou, Li Zhang, Feng Zhu
• Keywords: Mechanical Characteristics, Motor, OLTC, On-Line Monitoring, Rotating Angular Transducer

References

[1] H. Wu, Q.S. Liu and W.D. Liu: High Voltage Apparatus. Vol. 39 (2003), p.18.

[2] P. Kang, D. Birtwhistle and J. Daley: IEEE PES Winter Meeting (2000).

[3] P. Kang and D. Birtwhistle: IEE Proceeding on Generation, Transmission and Distribution. Vol. 148 (2001), p.301.

[4] P. Kang and D. Birtwhistle: IEE Proceeding on Generation, Transmission and Distribution. Vol. 148 (2001), p.307.

[5] P. Kang and D. Birtwhistle: IEEE Transactions on Power Delivery. Vol. 16 (2001), p.394.