SUPERCONDUCTING TRANSFORMER

PURPOSE:To make it possible to reduce the loss, insulation space, number of opening and closing equipment and number of connecting cables with a bus bur of the title transformer by a method wherein the exciting impedance of the transformer is reduced by forming it in a superconducting hollow core type, a shunt reactor function is given to the transformer, and the transformer and the shunt reactor are ingegrally formed. CONSTITUTION:The title transformer is constructed into a hollow-core type using no iron core, and the generation of a core loss is prevented. A superconducting windings 11 and 12 are provided in the container composed of a vacuum layer 13 and a cryostat 14 in order to reduce a copper loss generating on the windings, and a refrigerant 15 is put in the container. Then, the height, the width and the number of turns of the windings are adjusted in such a manner that the exciting impedance of the transformer will be almost same as the exciting impedance of the shunt reactor with which the cable to be connected to the substation is compensated, and the function of the transformer and the shunt reactor is given to a hollow-core type superconducting transformer. As a result, the reduction in loss, the installation space, the opening and closing device, and the number of connection cables can be accomplished.