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Unbalanced load is one of the fashionable problems in distribution systems, which has great unfavorable effects such as unbalancing in three phase voltages, increase of energy losses and occupation of feeder capacity. There are two main sources of unbalanced load, the first ununifored distribution of the single phase customers and the other, their accidental and unsimultaneous treatment. For reform...
High voltage insulators have to be used as insulating supporters in various environments in polluted area. The electrical performance of insulators will be degraded. The polluted insulators will have over withstand voltage, flashover can occur easily when the air becomes wet by humidity or fog, which affects on the reliability of the power systems. In order to define effective counter measures against...
According to DIN50019, the coastal districts of Persian Gulf are classified as extreme hygrothermal climatic zone. unusually high saturation vapor pressure up to 53mbar observed in this zone, justify this marking, as such air humidity phenomena are unique in the free atmosphere of the earth and are absolute extremes. intensive night falls of dew, which can occur regularly for several months, and long...
Pollution flashover is the major problem for operation of distribution network in IRAN, particularly in region close to Persian Gulf and Oman Sea. Conventional methods for measuring site pollution severities have formed the subject of many studies