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The operation of distributed generation (DG) as an island still gives room for discussions between utilities and customers, both as owners of distributed generators. For the utility company, operation in an island of generators (islanding) whose control is in the consumerspsila hands, could cause a high risk of equipment failure and compromise personnel safety. Thus, utilities are normally opposed...
The unbalance problem seems to be secondary when requirements of electric power quality are studied. However, unbalance is one of the most frequent problems and involves economic losses. The best known and prominent, is the effect on electric motors. A brief bibliographical survey on the causes and effects, definitions, normative and requirements specially stressing the effect on motors is presented...
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