750kV单相三绕组双体组合式变压器工程应用研究

Study on Engineering Application of 750 kV Single-Phase Three-Winding Catamaran Combined Transformer

围绕750 kV组合变压器,介绍了750 kV单相三绕组双体组合变压器的应用背景,阐述了750 kV组合变压器的设备方案、布置方案和控制保护方案,重点比较了常规变压器与组合变压器的设备尺寸和运输尺寸、空载和负载损耗、变电站布置方案。最后,结合西北地区电网的发展对750 kV组合变压器的未来进行了展望。

With a focus on the 750 kV combined transformer, this paper introduces the background of application of the 750 kV single phase three winding catamaran combined transformer, and elaborates the equipment design, layout design, control and protection design of the transformer. Comparision are mainly made between the conventional transformer and the combined transformer in terms of the equipment size, transportation size no-load loss and load loss as well as the layout of the substation. Finally, based on the actual development of power grids in the northwest region of China, it puts forward some prospects on the future application of the 750 kV combined transformer.