There are some abnormal phenomena in the test or operation of transformer, which are mainly caused by the residual magnetism in the core. Therefore, this paper briefly introduces the electromagnetic characteristics of...There are some abnormal phenomena in the test or operation of transformer, which are mainly caused by the residual magnetism in the core. Therefore, this paper briefly introduces the electromagnetic characteristics of ferromagnetic elements, and analyzes the mechanism of transformer remanence based on the electromagnetic characteristics. Finally, the influence of transformer remanence on transformer current, relay protection device, primary equipment and power quality is studied, and the corresponding preventive measures are put forward.展开更多
文摘There are some abnormal phenomena in the test or operation of transformer, which are mainly caused by the residual magnetism in the core. Therefore, this paper briefly introduces the electromagnetic characteristics of ferromagnetic elements, and analyzes the mechanism of transformer remanence based on the electromagnetic characteristics. Finally, the influence of transformer remanence on transformer current, relay protection device, primary equipment and power quality is studied, and the corresponding preventive measures are put forward.
