China developed a successful high-temperature superconducting transformer

The first prototype of a high-temperature superconducting transformer independently developed by China has successfully passed various tests and tests. This is the first three-phase high-temperature superconducting transformer prototype succeeded by the United States, Switzerland, Germany, Japan and a few other countries. Its secondary output current is currently the largest in the world. This is a practical application for the next step. High-temperature superconducting transformers have laid a solid technical foundation.
Researcher Xiao Liye, deputy director of the Institute of Electrical Engineering of the Chinese Academy of Sciences, introduced the three-phase 630kVA/10.5kV high-temperature superconducting transformer started in 2002 under the support of the national "863" major project and Xinjiang Tebian Electrician Co., Ltd. Research and development have achieved a series of high-tech achievements with independent intellectual property rights in a short period of one year. At present, the research and development of the 630 kVA/10.5 kV high temperature superconducting transformer is being stepped up. It is expected that all the research and development work will be completed by the end of next year, and a demonstration operation will be conducted.
Wang Yinshun, a researcher at the Institute of Electrical Engineering of the Chinese Academy of Sciences, said that superconducting transformers have the advantages of high efficiency, small size, no environmental pollution, and no fire hazards, and are recognized as the most likely new technologies to replace conventional transformers. Simply put, high-temperature superconducting transformers have bright prospects in the following two aspects: In traditional transformers, the copper loss in the winding accounts for most of the total loss of the transformer during full-load operation. The use of high-temperature superconducting windings can greatly reduce this part of losses. At the same time, as the electricity load in cities and towns is increasing day by day, large-capacity large-capacity transformers must be used to meet the needs of users. Many existing substations are faced with the problem of reconstruction because the volume of superconducting transformers is larger than conventional The transformer is 40%-60% smaller, and the superconducting transformer can be directly installed in the existing substation, thus saving a large amount of construction funds.