A Review of Partial Discharge Signals Occurrence in Polluted High Voltage Insulator
سال انتشار: 1400
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 287
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شناسه ملی سند علمی:
JR_SPRE-5-1_004
تاریخ نمایه سازی: 31 فروردین 1400
چکیده مقاله:
The application of sufficiently intense electric fields to insulators induces finite currents and then the insulators become conductive. This phenomenon is called dielectric breakdown and known as a fundamental non-equilibrium and nonlinear transport phenomenon in solids. Partial discharge (PD) is a small electrical avalanche caused by locally disrupted electric fields in dielectric materialsand is known to be one of the major factors which accelerates the degradation of electrical insulation. Pollution is the most important cause of external electrical failure of the insulator, fol-lowed by the operation of relays and the exit of transmission lines from the power grid. It is believed that the flashover and partial discharge phenomena are strongly related to environmental conditions such as temperature, humidity, pressure, pollution, and even space charges. In this review paper, we will identify the types of insulators associated with pollution sources and present laboratory results while defining partial discharge and its effects on equipment.
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نویسندگان
Hosein Fadaeeasrami
Department of Electrical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran
Faramarz Faghihi
Department of Electrical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran
Hosein Mohammadnezhad
Department of Electrical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran