On July 30, Nanjing Electric (Group) Co., Ltd. and Nanjing Electric High Voltage Bushing Co., Ltd. independently developed and produced a million-volt oil-paper capacitive UHV bushing in Linyi, Shandong. This is the first UHV transformer bushing for engineering use and officially connected to the grid in the history of Nanjing Electric. Its successful installation indicates that Nanjing Electric's bushing products have reached a new level and made the national grid UHV bushing localized. Important contribution.

Respond to the call and persevere

For many years, the UHV bushings used on transformers in our country are all products of foreign companies. According to the spirit of the National Energy Administration, the State Grid Corporation has vigorously advocated the localization of UHV bushings in recent years. For this reason, promoting the production and localization of UHV bushings has become the primary goal of domestic manufacturers.

As a veteran leader in the high-voltage casing industry, our company has been actively responding to the call of the country, vigorously promoting the localization of UHV casing, diligently researching, overcoming difficulties, and persevering. As early as 2006, our company independently completed the first million-volt UHV AC bushing. Over the past ten years, the company has continued to forge ahead, continue to deepen on the basis of existing achievements, innovate technology, and innovate products. After the joint efforts of the vast number of scientific and technical personnel and the entire plant staff, the latest 1000 kV UHV AC bushing product was finally completed in January 2016, and the third-party type test was completed by the China Electric Power Research Institute. All the results meet the requirements of relevant countries and industries. According to the requirements of standards and technical specifications, the relevant achievements have passed the technical appraisal of new products and have the conditions for project trial.

Under this opportunity, Baobian Electric submitted an application to try Nanjing Electric bushings in the project on December 14, 2016. On December 21, 2016, senior experts from the State Grid Communication Department, China Electric Power Research Institute and Baobian Electric conducted a serious review of the on-site production and experimental conditions of Nanjing Electric UHV bushings, and formed expert review opinions to confirm Nanjing The electrical UHV AC bushing basically meets the relevant requirements of the project trial, and it is formally clarified below. Considering the engineering situation, it is planned to try one Nanjing Electric UHV AC bushing on one operating phase of the UHV shunt reactor unit of the new project in Linyi Substation This also marks that our company's UHV casing products have been recognized, and it is in the forefront of the industry on the road of UHV casing localization.

Attach great importance to it and go to the scene

On July 25, 2017, under the great attention of the company’s leaders, a team of 8 people, led by the leaders of the casing company, and the company’s technical experts, formed a working group to go to the new construction site of the Linyi substation to participate in the demolition scheduled for the 26th. Installation and commissioning and installation and operation work on the 27th ensure the smooth progress of the installation.

On the morning of July 26, the working group arrived at the new construction site of the substation in Wentuan Town, Junan County, Linyi City, Shandong Province. The technical experts, together with the personnel in charge of the transformer site, dismantled the company’s UHV casing products that were shipped first. Installed. Under the guidance of our company's technical experts, the disassembly, assembly, drying and debugging of the UHV bushing was completed.

Due to the weather, the installation scheduled for the 27th was forced to postpone. In the face of this situation, our company's technical staff worked tirelessly, insisted on staying behind, staying at the installation site, and continuously paying attention to the installation dynamics. On July 30, the weather conditions improved, and the construction unit installed under the guidance of our company’s on-site technicians. This is the first million-volt casing of our company to be officially connected to the network, marking the direction of our company’s UHV casing products. New areas have also led to new directions for future development.

During the on-site installation process, the company's technical staff were not afraid of hard work, and their serious and responsible work attitude was also praised by the staff of the substation and Baoding Transformer Company. Achievement comes from earnestness, and earnestness manifests in subtlety. Technical personnel are the backbone of the company's product innovation and continuous improvement. Through their efforts, our company will eventually move to a higher level.

Seize the opportunity and forge ahead

This time, the first one-million-volt casing installed in Linyi, Shandong Province, is a solid step taken by our company in responding to the localization of UHV casing. For a long time, foreign casing production companies have occupied a dominant position in the use of domestic UHV bushings. How to break this long-standing "advantage", truly achieve the localization of UHV bushings, and promote domestic UHV bushings It is a question that every domestic manufacturer should think about in order to make the industry bigger, stronger, and global.

This installation can be regarded as a milestone on the road to localization of UHV bushings. Under such an opportunity, only by seizing the opportunity and moving forward can we continue to make progress. As our company's veteran industry, the casing industry should and must play a leading role at this time, be in the forefront, fight for the forefront, and always place product innovation and improvement in an important position. In order to promote the localization of UHV bushings, and for Nanjing Electric to carry forward the past, we look forward to the joint efforts of all colleagues in the company. (Sun Ning)