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Estimating the useful life of power system components is of considerable importance both in planning, to properly assess the costs, and in the management of such systems, to effectively schedule maintenance programs. The paper discusses the reliability of the insulation of power system components on the basis of well-known life models of such devices, with the aim of parametric statistical estimation...
This paper studies the effects of using compact fluorescent lamps (CFLs) on the power distribution system elements on both the generation and the consumption sides. Previously, we presented a comprehensive analysis of how the harmonic distortion is generated in the CFLs and how it affects the distribution system wave shape. Here we study the technical and practical issues of mass utilization of CFLs...
Current and voltage harmonics distortion is an important issue in power quality (PQ) of power systems. In order to monitoring the PQ of distributed generators in real-time, an efficient method for tracking power harmonic parameters is presented in this paper. Firstly, a state-space model used for non-stationary harmonic analysis is constructed based on the definition of instantaneous frequency, in...
Harmonic distortion is a growing problem in power systems due to the increasing use of power electronic devices and loads. A possibilistic methodology for harmonic load-flow calculations based on fuzzy numbers has recently been proposed by the authors as an alternative to probabilistic approaches for modeling uncertainties in linear and nonlinear loads. This paper presents a methodology to aggregate...
In a previous paper, the authors proposed an orthogonal-core type dc-ac converter for use in photovoltaic power systems. The dc-ac converter has such desirable features as a simple construction, high degree of safety, and, ease of maintenance. The operating characteristics of a single-phase converter for residential photovoltaic power systems have also been reported. In this paper, we discuss the...
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