DocumentCode :
3466805
Title :
A novel method for recovery of drainage power from distribution transformers
Author :
Nair, P. S Chandramohanan ; Preetha, P.K.
Author_Institution :
Dept. of Electr. & Electron. Eng., Amrita Vishwa Vidyapeetham (Amrita Univ.), Kollam, India
fYear :
2011
fDate :
5-7 Dec. 2011
Firstpage :
1
Lastpage :
5
Abstract :
Non-linear loads have become a larger percentage of the total load in commercial facilities. The use of non-linear loads results in excessive injection of harmonic components from the customer facility onto the utility power system. Conventional distribution transformers are of delta-star type, providing 3-phase 4-wire ac distribution. In such a case, the triplen harmonic currents caused due to non-linear loads get circulated in the primary delta winding. But this leads to increased power losses, temperature rise and subsequent de-rating as well as reduction in life of transformers. This paper proposes a novel method for recovering the drainage power which is normally wasted in the delta winding of the distribution transformer. The experimental studies conducted on a three kVA transformer shows that when the drainage power of delta winding is recovered it helps in improving the transformer efficiency and system power factor.
Keywords :
power distribution; power factor; power system harmonics; power transformers; transformer windings; 3-phase 4-wire AC distribution; commercial customer facility; distribution delta-star type transformer; drainage power recovery; harmonic component excessive injection; nonlinear loading; power factor system; power loss; primary delta winding; subsequent derating; triplen harmonic current; utility power system; Harmonic analysis; Harmonic distortion; Power system harmonics; Power transformer insulation; Reactive power; Windings; ac power distribution; distribution transformer; power recovery; power system harmonics;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Innovative Smart Grid Technologies (ISGT Europe), 2011 2nd IEEE PES International Conference and Exhibition on
Conference_Location :
Manchester
ISSN :
2165-4816
Print_ISBN :
978-1-4577-1422-1
Electronic_ISBN :
2165-4816
Type :
conf
DOI :
10.1109/ISGTEurope.2011.6162661
Filename :
6162661
Link To Document :
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