This paper presents the results of a computer simulation of three real life 13.8kV feeders supplying consumers with non-linear loads which include CFL (Compact Fluorescent Lights) with electronic ballasts. The computer simulations are supported by laboratory testin and in-the-home installation/monitoring of CFL. ?he results of the laboratory tests and in-the-home monitoring were combined with load research information regarding residential load profiles to produce load models for use in computer simulation of the behavior of the three distribution feeders. The input current to electronically ballasted CFL has unusually high distortion, THD.(total harmonic distortion) > 100%.The main conclusion of this work is that for a 15kV class feeder with a maximum 1 OMVA load, the total load of electronically ballasted CFL should not exceed lOOkW if the voltage THD is to be kept 5 5%.BACKGROUND

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ABSTRACT:The typical electrical engineering (EE) undergraduate curriculum is packed with foundational materials and offers limited room for other desirable materials that could be readily applied in the power industry. A Motor Current Signature Analysis (MCSA) tool is developed for effectively teaching the concepts of induction motor fault detection within one lecture or laboratory period. ß

Measurements on harmonics taken at the Gardner PhotovoltaicProject during the summer of 1987 are reported. The project includes 28 PV homes, each with a roof-mounted 2 kW PV system, connected to one phase of a 13.8 kV three-phase feeder. The measurements discussed in this paper address the topics of voltage and current distortion and power flow. Theoretical calculations were carried out in order to study the effects of PV inverters other than the type installed for this study. Computer modeling of the feeder in Gardner indicates, and measurements confirm, that small increases (0.2%) in voltage THD will occur on this feeder with the indicated penetration of PV systems using high-quality, forced commutation inverters. This paper is based on research funded by the Electric Power Research Institute under contract RP2838-1.

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