The Disquisition On Inspection To DC System And Device To Earthing Fault

Now days,with the further improvement of dependability requires to transformer substation in electric power system,the level of on-line inspection to DC system must be strengthened to meet the request of more dependability to DC system.The content about the inspection of DC system of substation is researched in this paper,including the study of on-line inspection to storage cells and the study of earthing fault lookup.In the aspect of inspection to cells,the inspection to cells is discussed on foundation of analysing in several pieces of measuring amount to the battery. And an improvement method is put forward based on the defect of the original method. In the aspect of earthing defult, an exiting method is carried on to it`s perfection, made its' function more complete, in order to adapt to the higher requiring of the scene.