First full load operation! The world's first kilometer level superconductor breaks the record again, with a maximum of 2160 amperes engineering | Transmission | Record
At 12:30 today, with the operating current parameter reaching 2160.12 amperes, the world's first 35 kV kilometer level superconducting transmission demonstration project achieved full load operation for the first time, breaking the record for the maximum actual operating capacity of commercial superconducting transmission projects in China.
The 35 kV kilometer level superconducting transmission demonstration project was successfully put into operation in December 2021. It is currently the world's largest fully commercialized superconducting transmission project with the longest transmission capacity, the longest distance, and the largest number of joints. It is also the only kilometer level superconducting transmission project that uses full pipe laying. So far, it has been operating safely and stably for over 600 days. The operation of this project has set a precedent for the operation of kilometer level superconducting cables in the core areas of large cities, accelerated the localization of the entire superconducting industry chain, and greatly enhanced China's international influence in the field of superconducting transmission. Since its operation, it has supplied nearly 300 million kilowatt hours of electricity to 49000 users in the Xujiahui commercial district, Shanghai Sports Center, and other areas within the power supply area.
State Grid Shanghai Electric Power conducted a high-load test of over 1000 amperes for 9 consecutive hours on the superconducting transmission project in July last year, preliminarily verifying the ability of superconducting cables to operate under high loads. In order to further verify the design current carrying capacity and ultimate bearing capacity of the superconducting transmission project at 2200 amperes, and with all conditions met and ensuring reliable power supply to users, State Grid Shanghai Electric Power adjusted the power grid operation mode from 3 a.m. on August 17th to achieve the concentration of 1090 ampere electricity load to the superconducting transmission project.
![First full load operation! The world's first kilometer level superconductor breaks the record again, with a maximum of 2160 amperes engineering | Transmission | Record](https://a5qu.com/upload/images/aad0402e30603201a9f1f08bc2241fda.jpg)
From 7 this morning until the time of publication, the superconducting transmission project has been operating at high load for over 10 hours, with a maximum current of 2160.12 amperes. Important parameters such as voltage, frequency, and cooling system power have been maintained within normal ranges, and all systems are operating well. The overall reliability of the project has been comprehensively verified.
It is understood that under full load operation, one superconducting cable is equivalent to the total operation of 4 to 6 ordinary cables of the same voltage level, which can save 70% of underground space and improve energy supply efficiency by 400%. At the same time, a 35 kV superconducting cable is approximately equivalent to the energy supply capacity of a 220 kV line and a main transformer of the same voltage level, which can significantly reduce the space required for the construction of high-voltage substations and provide a commercially valuable feasible solution for tapping into the energy supply potential of the core areas of mega cities.
In the next stage, State Grid Shanghai Electric Power will also explore more superconducting application scenarios based on actual needs, promote the application of superconducting transmission technology in the central urban area, explore more typical application scenarios, and promote related innovation and continuous improvement of core technologies.
![First full load operation! The world's first kilometer level superconductor breaks the record again, with a maximum of 2160 amperes engineering | Transmission | Record](https://a5qu.com/upload/images/cde2ac5cf62ab6848bee8bb1e3c96115.jpg)