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A Method to Estimate Leakage Current of Polluted Insulators

Xia Y., Jiang X., Sun C., Dong B.

Przegląd Elektrotechniczny

2012

R. 88, nr 3b

161-164

The effects of the applied voltage(U), equivalent salt deposit density (�PESDD) and relative humidity density(RH) on the leakage current (LC) are studied based on the least squares algorithm (LSA) in this study. Experiments' results show that, the maximal amplitude of LC Ih increases with the increase of �PESDD by an power function with a positive index 0.451, while increases with the increase of both U and RH by an exponential function with a positive index 0.017 for U and 9.751 for RH. The result can be used to evaluate the pollution condition of insulators based on LC.

Zbadano prąd upływu zabrudzonych izolatorów uwzględniając przyłożone napięcie, względne zasolenia i względna wilgotność. Stwierdzono, że prąd upływu rośnie wraz z zasoleniem ze współczynnikiem potęgowym 0.45.

Weighted least-squares algorithms of the method of fundamental solutions

Smyrlis Y. S., Karageorghis A.

Vibrations in Physical Systems

2004

Vol. 21

339--348

We Study the Method of Fundamental Solutions (MPS) for the solution of certain elliptic boundary value problems. We propose least squares algorithms, when the number of collocation points is larger the number of singularities as well as in "the case in which the number of singularities is larger than the number of collocation points.

Adaptive least squares algorithms for two dimensional system identification and filtering: a unified approach

Glentis G.-O., Georgoulakis K.

Foundations of Computing and Decision Sciences

2003

Vol. 28, No. 2

95-112

In this paper, a unified approach is presented for adaptive Least Squares Two-Dimensional system identification and linear filtering. First, a unified deterministic Least Squares criterion is introduced, and subsequently utilized for the derivation of a general algorithmic framework for the adaptive Two-Dimensional system identification and filtering. Overdetermined, as well as underdetermined Least Squares Two-Dimensional adaptive algorithms are derived, from the proposed general adaptive scheme. In this way, known Two-Dimensional adaptive algorithms are interpreted as special cases of a general algorithmic form. Moreover, new adaptive algorithms are derived, following the proposed methodology.