特高压交流变压器的工程应用及创新发展

特高压交流变压器是特高压交流输电工程的核心设备之一，从设计、制造、试验和运输等方面分析了我国1000 kV特高压交流输电工程用变压器的主要特点。介绍了我国特高压交流变压器的工程应用情况，以及在关键原材料、组部件方面取得的突破，特高压变压器标准化方面取得的成果等。随着我国特高压电网的不断发展，特高压变压器技术水平取得了长足进步，重点分析了特高压升压变压器、特高压1000 kV降压220 kV变压器、特高压大容量变压器和解体运输、现场组装式特高压变压器(以下简称解体式特高压变压器)等一系列创新产品的特点及适用场合。工程应用表明:我国特高压变压器技术先进、运行可靠。最后，对特高压变压器的性能提升、组部件国产化及运行维护方面做了展望。

Engineering application and innovative development of UHV AC transformer

UHV AC transformer is one of the core equipment of UHV AC power transmission project, this paper analyzes the main characteristics of transformers used in 1000 kV UHV AC transmission project in terms of design, manufacturing, testing and transportation, etc. This paper introduces the engineering application of UHV transformer in China, the breakthrough in the key raw materials and components, and the achievements obtained in the standardization of UHV transformer. With the continuous development of China''s UHV power grid, UHV transformer technology has made considerable progress. This paper analyzes the characteristics and applicability of a series of innovative products such as the UHV step-up transformer, 1000 kV step-down 220 kV transformer, UHV large capacity transformer, and the Advanced Site Assembly (ASA) UHV transformers. Engineering application indicates that UHV transformer in China has advanced technology and reliable operation. Finally, it makes a prospect of the development of UHV transformer in the aspects of performance improvement, domestic level and operation and maintenance. This work is supported by Science and Technology Project of State Grid Corporation of China (No. SGTYHT15-JS-191).