Based on the description of the large fluctuation of busbar voltage in section 6kV 1B of a power plant and the analysis of the information such as protection alarm and fault recorder curve, it is determined that the l...Based on the description of the large fluctuation of busbar voltage in section 6kV 1B of a power plant and the analysis of the information such as protection alarm and fault recorder curve, it is determined that the large fluctuation of busbar voltage in section 6kV 1B is caused by the rupture of the connecting terminals of the 1C high-pressure fluidization fan motor and the short circuit of three-phase arc caused by the discharge of cables and connecting terminals. According to the results of the analysis, it is proposed to inspect the wiring and terminals of other electrical equipment to eliminate potential equipment hazards;It is also required to strengthen the process control during the equipment overhaul, and do a good job of acceptance after the equipment overhaul to ensure that the equipment department reaches a good operating condition after the overhaul.展开更多
文摘Based on the description of the large fluctuation of busbar voltage in section 6kV 1B of a power plant and the analysis of the information such as protection alarm and fault recorder curve, it is determined that the large fluctuation of busbar voltage in section 6kV 1B is caused by the rupture of the connecting terminals of the 1C high-pressure fluidization fan motor and the short circuit of three-phase arc caused by the discharge of cables and connecting terminals. According to the results of the analysis, it is proposed to inspect the wiring and terminals of other electrical equipment to eliminate potential equipment hazards;It is also required to strengthen the process control during the equipment overhaul, and do a good job of acceptance after the equipment overhaul to ensure that the equipment department reaches a good operating condition after the overhaul.
