1000kV UHV AC transmission project is the highest voltage level transmission and transformation project in China and even in the world. It has the advantages of long distance, large capacity and low loss. It plays an important role in optimizing the energy allocation in our country and has great potential for the development of power grid technology in China and even in the world And power grid construction will also have a significant and far-reaching impact. UHV AC transformers and bushings are the core equipment of the project. The factory test and on-site handover test have reached the limit of the world's test capability. The test abroad can not be carried out in strict accordance with the standards. The success of the test is directly related to the success or failure of the project. In order to solve this world-wide technical problem, State Grid Corporation organized a series of special scientific research projects in the field of high voltage. Chen Jiangbo, Wuhan Branch of China Electric Power Research Institute, led the research team to meet the technical challenges of partial discharge monitoring of low potential and high field strength areas of UHV AC power transformers and casing corona elimination, and successfully completed the UHV AC power transformers and sets Tube special test, the scientific and technological achievements in Hubei Province Science and Technology Department identified as the overall reached the international advanced level. The key technologies and innovations of this achievement are as follows: The key test equipment for UHV AC bushings was developed and the test system to meet the type test requirements of UHV AC bushings was developed. Developed the world's first 1600kV standard capacitors and developed a test system to meet the type test requirements of UHV AC transformers. The dielectric loss angle measurement test and UHV AC bushing test at the full voltage (1100kV) were completed for the first time in the world. Discharge test. The innovation of partial discharge test method of UHV AC transformer bushing was realized. The partial balance measurement method of partial discharge measurement test of casing was put forward. The background partial discharge capacity of UHV AC transformer casing can be controlled within 2 ~ 3pC, which improves the test precision remarkably. It has realized the innovation of partial discharge test method and test equipment for UHV AC power transformers. The partial discharge model of UHV AC voltage transformer was established. The experiment scheme of multi-point monitoring of acousto-electric coupling and the special technical measures of anti-interference were put forward. The partial discharge monitoring, positioning and casing corona elimination of UHV AC low voltage field were solved And other technical problems. Developed with a number of measurement while monitoring, recording, playback signal partial discharge measurement equipment. Project research team to adopt the technical achievements in the world for the first time completed a full set of UHV AC transformer casing type test. State Grid Corporation of China successfully completed the field discharge test of the world's first 1000kV AC UHV transformer and ± 800kV DC UHVDC converter transformer using this technology. In addition, the technical achievements have been widely used in the factory test of UHV transformer and reactor. Technology in Southeast Jin - Nanyang - Jingmen 1000kV UHV AC pilot demonstration project and its expansion project, Anhui East to send 1000kV UHV AC demonstration project, North Zhejiang - Fuzhou 1000kV UHV AC power transmission project has been applied and achieved good The effect of ensuring the UHV AC voltage transformer project in the core equipment once put into operation successfully. The technical achievements of 5 patents, the formation of an international standard, a national standard, a national grid company standard 1; obtained including the National Energy Award, China Electrotechnical Technology Award, Power Construction Award, State Grid Corporation of Science and Technology Progress Award Awards; direct economic benefits of up to 52 million yuan, with the follow-up of UHV AC project after another construction, the technology will create greater economic benefits. The technology to fill gaps at home and abroad, so that China's high-pressure test capability to reach the world's leading level. It plays a key role in mastering UHV transformer technology in our country and improves the overall level of China's electrical equipment manufacturing industry. The technology guides the UHV AC transformer and casing factory test and field handover test and other important aspects of UHV construction, to ensure project put into operation, the long-term safe and stable operation of power grid is of great significance. Chen Jiangbo, Ph.D., a professor-level senior engineer, China Electric Power Research Institute of High Voltage Research Laboratory Director, the National High Voltage Electrical Safety Standardization Deputy Secretary-General, the National Committee of insulating materials and insulation system evaluation committee. Has long been engaged in high voltage and insulation technology research, research areas including power transmission and transformation equipment testing, fault diagnosis. Participated in and completed a national support project 1, responsible for or participate in more than ten projects of State Grid Corporation of science and technology projects. He has written 7 international and domestic standards, published over 20 papers, edited 3 books and obtained 11 patents and software copyrights.