NDLI: Improvement in the performance of cascaded tap changers using a fuzzy rule-based scheme

Content Provider	IEEE Xplore Digital Library
Author	Hashemi, Z. Mardaneh, M.
Copyright Year	2011
Description	Author affiliation: Electrical Energy Distribution Company, Kohgilooye-BooyerAhmad, Yasuj, Iran (Hashemi, Z.) \|\| Department of Electrical Engineering, Shiraz University of Technology, Shiraz, Iran (Mardaneh, M.)
Abstract	The transformers which connect the different voltage levels in transmission and distribution systems are supplied with on-load tap changing mechanism. The on-load tap changer maintains the voltage amplitude within the pre-defined limits at the so called regulation bus. In a radial feeder, the on-load tap changers are cascaded. Poor coordination between cascaded tap changers causes improper voltage profile and unnecessary operations of tap changers. A fuzzy logic controller is presented in this paper which improves the operation of cascaded tap changers as well as parallel ones. The proposed controller monitors both primary and secondary voltages of the transformer and orders an upward or downward tap changing operation. Because of locally measurement, the communication is not required between two substations which are apart. The controller is also able to set the time delay of tap changing operations based on the measured voltages, which improves the performance of controller and provides a chance to reduce the unwanted changes of taps and also an opportunity to correct the voltage in a reasonable time.
Starting Page	2288
Ending Page	2293
File Size	353390
Page Count	6
File Format	PDF
ISBN	9781424487547
e-ISBN	9781424487561
e-ISBN	9781424487554
DOI	10.1109/ICIEA.2011.5975973
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-06-21
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Voltage control Delay effects Tuning Voltage measurement Fuzzy logic Conferences Industrial electronics
Content Type	Text
Resource Type	Article

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