电路相关Early detection of weak points in MEEC distribution system.pdfVIP

Early Detection of Weak Points in MEEC Distribution System 1 1 2 3 M. Abdel-Salam , S. Abdel-Sattar , Y. Sayed and M. Ghally 1 Electrical Engineering Dept., Assiut University, Assiut, Egypt. 2 Electrical Engineering Dept., Menia University, Menia, Egypt. 3 Middle Egypt Electricity Company, Menia, Egypt. Abstract- This paper is aimed at detecting the weak points in the by a variable gain amplifier to allow for a wide dynamic distribution system of MEEC, Middle Egypt Electricity signal range. The signal is then heterodyned or translated into Company. These include loose connections, polluted insulators an audible signal. The heterodyne circuit oscillator frequency and micro-roughness on line conductors and insulator is adjusted by the CPU, so that specific frequencies can be hardware. The detection methodology is based on measuring monitored or competing ultrasound can be eliminated. This ultrasound emissions from these weak points to warn against adjustment is done with the Sensitivity / Frequency which is impending failures and subsequent supply interruptions. Laboratory testing made it possible to discriminate between an encoder for the CPU. The Heterodyned signal is then loose-connection arcing, polluted