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Due to problems caused by non-linear loads in a power system, a harmonic technical analysis on the hydroelectric generating units Illuchi 1 and 2 of the Electric Utility Company of Cotopaxi Province ELEPCO S.A., Ecuador, is performed in this project by means of industrial analyzers as well as software simulation. The analysis starts from harmonic distortion measurements on the generating plants and...
This paper presents the results of harmonic analysis and harmonic filter design for a grid-connected aluminum smelting plant. Harmonic-penetration-analysis studies are carried out to determine the system resonance frequencies and the individual and total harmonic voltage distortions for a wide range of possible system operating conditions including scenarios with N-1 and N-2 generation, an outage...
The paper studies the problems on centralized normalization of harmonic voltages in the network with distributed nonlinear loads by the passive filters. The nonlinear loads are connected to the extended HV network at practically equal distances. Each nonlinear load is of sufficiently high power. The harmonic voltage values at the nodes of nonlinear loads connection to the supply network exceed the...
The paper studies the problems on centralized normalization of harmonic voltages in the network with distributed nonlinear loads by the passive third-order filters. The nonlinear loads are connected to the extended HV network at practically equal distances. Each nonlinear load is of sufficiently high power and causes sizable distortions in the supply network. The harmonic voltage values at the nodes...
Electric railways are pollution sources of power quality in the public power system. The low power factor and current harmonics caused by AC-DC locomotives have been difficult problems needed to be deal with for a long time in China. Some countermeasures have been taken by the railway authorities to improve the power qualities in recent years. This paper presents the performance of the SVC, which...
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