Abstract:Aiming at the difficult problems of power grid equipment type selection and supplier selection, a new method of evaluating the equipment quality is proposed. Based on the operation data of equipment defects, faults and decommissioning in production management system, considering the influence of different equipments service life, serious grade of different defects and early decommissioning due to quality problems, a relatively complete equipment defect rate, failure rate and equipment life evaluation is constructed. It is a overall evaluation of equipment quality, and provide a more scientific decision basis for equipment type selection and procurement, equipment operation and maintenance strategy optimization.