标题：On-line Monitoring Method of Drive Motor Operational for On-load Tap Changers
作者：Liu, Tao; Zhao, Tong; Zou, Liang; Zhang, Li; Zhu, Feng
作者机构：[Liu, Tao; Zhao, Tong; Zou, Liang; Zhang, Li] Shandong Univ, Sch Elect Engn, 17923 Jingshi Rd, Jinan 250061, Peoples R China.
会议名称：2nd International Conference on Sensors, Measurement and Intelligent Materials (ICSMIM 2013)
会议日期：NOV 16-17, 2013
来源：SENSORS, MEASUREMENT AND INTELLIGENT MATERIALS II, PTS 1 AND 2
关键词：OLTC; motor; mechanical characteristics; rotating angular transducer;; on-line monitoring
摘要：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.