| Because of the appearance of the high temperature superconductor (HTS), the superconducting technology is developing quickly, and the practicability of the superconducting devices is stronger and stronger. However, that brings a very important problem—quench, and the quench protection ensures the safety and stabilization of the superconducting power system effectively. So, the research to the quench protection of superconducting power system is a very significative project. Therefore, our lab designed and did some experiments, received much important data, and attained some fruits by analyzing the data at last. This paper introduces the developing status of superconducting technology at present first of all, and then expatiate the project, data and conclusions of the two experiments—n value characteristic and the effect of temperature against the HTS. At last, introduce the national 863 plan project—Superconducting Magnetic Energy Storage (SMES) and the quench protection system designed for it. The paper mainly consists of the following parts:First, introduce the developing status of the superconducting technology and some main superconducting devices used in the superconducting power system, explain the origin and search signification of the search;Second, introduce the project, data processing and analysis of the n-value characteristic experiment, then receive some important conclusions such as part quench strongly effects the whole quench;Third, introduce the signification, project and data processing methods, then receive some important conclusions such as the temperature of the superconductor cannot be higher than 80℃by analyzing and comparing the data;Forth, introduce the status, structure and parameters of the SMES simply, then particularly explain the quench protection system designed for SMES. This system mainly include a signal checking circuit and a signal enlarge circuit, and provide a touching off signal when the protection action is needed. |
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