【摘要】 为适应大容量应用需求,针对一种直线式永磁饱和型故障限流器(permanent-magnet-biased saturation based fault current limiter,PMFCL)磁拓扑结构,基于等效磁路法建立了以饱和深度比、电感比与电感和为基本变量的结构参数设计算法,并通过分析铁心上工作点的变化规律,将PMFCL结构参数优化转化为对3个独立变量的优化,即对铁心i-Be曲线上3个关键点的优化问题,为获得最优结构参数奠定了算法基础。将参数优化算法应用于110 kV系统设计实例,并基于Maxwell-2D软件建立了直线式PMFCL的场–路耦合仿真模型,验证了算法及优化结构参数的有效性。更多还原

【Abstract】 A straight-line type topology was employed for permanent-magnet-biased saturation based fault current limiter(PMFCL) to meet large capacity application requirements.By virtue of three basic variables of saturation depth ratio,inductance ratio and inductance sum,an algorithm for structural parameters design was established on the basis of equivalent magnetic circuit method.Through analysis of the iron-core’s operational points,the optimization of the structural parameters was equivalently transformed to optimization of the three independent variables,which can also be considered as the optimization of three key points on the i-Be curve of iron-core.A solid foundation for optimal structural parameters was laid in view of all of the above work.The parameter optimization algorithm was applied to an actual case study in 110 kV system,and a magnetic field-circuit coupled simulation model was created with Maxwell-2D regarding the novel PMFCL topology,which verified the effectiveness of the proposed methodology and the optimized results.更多还原