Study on Characteristics and Test Judgment of Electrical Fault of High-Voltage Equipment

Since the"big five", the proposed large-scale planning and construction system of substations has seen rapid development, providing enough energy for people while also causing a series of problems, such as a gradual increase in radiation and magnetic fields. It not conducive to artificial operation, such as in case of frequent high voltage electrical equipment failure, which again negatively influences the whole electric power system operation. Especially, the electrical failure of high voltage equipment, if not found and solved in time, could cause a major power accident, bring economic losses to the power company, and even threatening the life safety of staff. None of these risks can be ignored. Based on this, in order to reduce the risk of substation accidents and to promptly discover and solve the problem of electrical failure in high voltage equipment, this paper studies the substation in BX area as an example, by using the frequency response method, such as a low impedance of transformer for the winding deformation test.The winding has carried out with the handover testing and hoisting cover inspection With the collapse of the experiment, not only are the problems causing the fault found, the fault type and location are also determined. The feasibility of this method for detecting electrical faults of high voltage equipment is confirmed, and the fault characteristics, location, and other information can be accurately judged, which provides support for the formulation of fault strategies in the later stage.