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首页> 美国政府科技报告 >Application of MSCAP (Magnetic System Circuitry Analysis Program) to a Fusion Reactor Superconducting Magnet System with an Internal Short
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Application of MSCAP (Magnetic System Circuitry Analysis Program) to a Fusion Reactor Superconducting Magnet System with an Internal Short

机译：msCap（磁系统电路分析程序）在内部短路聚变堆超导磁体系统中的应用

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The Fusion Safety Program of EG and G Idaho, Inc. at the Idaho National Engineering Laboratory (INEL) is developing a safety analysis code called MSCAP (Magnetic System Circuitry Analysis Program) to evaluate electrical circuit responses in large magnetic systems, such as those in tokamak and mirror-type fusion reactors, under normal and off-normal conditions. MSCAP is an electrical analysis code designed to handle fast response transients such as those resulting from circuit breaker action and internal magnet shorts and arcs. Because of the large amount of stored energy in these magnetic systems, electrical protection circuitry must be incorporated to respond adequately to these types of accident conditions. Analysis capability of accident responses, especially those arising from electrical shorts in magnets, can reveal inherent design limitations and areas of important safety concerns. MSCAP has been used to study the effects of an assumed electrical short across one, three, and five turns of a 444-turn magnet during fast and slow electrical system discharge transients of a large superconducting tokamak system. Based on the modeled reactor system, results indicate that fast discharges produce transient responses much more severe than slow discharges, and for any given discharge transient, increasing the number of turns shorted correspondingly increases the short current in direct proportion to the associated inductance. The five-turn short results show a breaker voltage spike of about 4000 volts and a shorted current spike of approximately 2600 amperes during the fast discharge transient. These voltage and current spikes are large enough to cause possible system breaker failures and local magnet damage. In addition, the current in the internally shorted turns of a discharging coil was discovered to exceed the fully charged coil current. 11 figs. (ERA citation 11:015374)

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