This paper investigates the influence of harmonic distortion on life reduction of power capacitors when connected in parallel to power converters operating with randomly-varying load. A probabilistic life model is employed in order to evaluate the effectiveness of standard design procedures for capacitors operating in distorted regime. This approach is applied to a working example based on measurement data obtained from a busbar feeding a ski-lift resort. Either a capacitor bank or a system consisting of shunt filter plus capacitor bank is considered for reactive power compensation. It is shown that capacitor design made on the basis of voltage derating of 20% may be not sufficient to ensure satisfactory life performance. © 1998 IEEE.
Considerations on the life performance and installation practice of shunt capacitors in the presence of harmonics generated by Ac/Dc converters / Cavallini A.; Ghinello I.; Mazzanti G.; Montanari G.C.. - In: IEEE TRANSACTIONS ON POWER DELIVERY. - ISSN 0885-8977. - STAMPA. - 14:1(1999), pp. 227-234. [10.1109/61.736727]
Considerations on the life performance and installation practice of shunt capacitors in the presence of harmonics generated by Ac/Dc converters
Cavallini A.;Ghinello I.;Mazzanti G.;Montanari G. C.
1999
Abstract
This paper investigates the influence of harmonic distortion on life reduction of power capacitors when connected in parallel to power converters operating with randomly-varying load. A probabilistic life model is employed in order to evaluate the effectiveness of standard design procedures for capacitors operating in distorted regime. This approach is applied to a working example based on measurement data obtained from a busbar feeding a ski-lift resort. Either a capacitor bank or a system consisting of shunt filter plus capacitor bank is considered for reactive power compensation. It is shown that capacitor design made on the basis of voltage derating of 20% may be not sufficient to ensure satisfactory life performance. © 1998 IEEE.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
