The Research And Development Of HTS Cable's Monitoring And Protection System

As the capacity of power system is becoming more and more large ,the new and advanced criterions is required .The technology of high temperature superconductor(HTS) will bring many advantages and solutions for the criterions. The high temperature superconducting(HTS) cables will be applied in the power system first. In order to ensure the HTS cables working in safety, monitoring and protecting for the HTS cables is necessary and important in the foreground. Starting from the requirement and the practice of the HTS cables applying in the power system ,the paper presented the research and development process of the HTS cables monitoring and protection device. The paper described the status of demands in the power system of our country and the technology of HTS in the world at first. Then the paper discussed and analyzed the problems about the HTS in the world. The quench and protection of HTS is one of the keys in the application of HTS cables .Presently detecting the temperature , pressure and flux about HTS cables are the main methods in quench detection. These non-electric parameters respond slowly ,and can't offer sufficient protection in short current .According the magnitude of fault current ,the paper presented the three layers protection method both with the electric and non-electric parameters ,and can easily apply in the projects. Based on three layers protection the paper presented the blue print about the HTS cable's monitoring and protection , and offered the configuration about monitoring and protection. In order to give attention both to monitoring and protection ,The HTS cables monitoring and protection device combined with topper union and lower union ,and it had rich functions include monitoring , protection fault recording ,etc .The two unions adopted different hardware platform and executed the suitable functions .The paper also introduced the arithmetic, flow and implement of the software. After finished the HTS cables monitoring and protection system the system have been verified by static simulation experiments and applied in the power system .The paper introduced and discussed the results of the test. All the results indicate that the HTS cables monitoring and protection system reached the prospective criterions and worked well.