Strong Coupling of Electromagnetic Transients and Finite Element Magnetic Field Solvers
Strong Coupling of Electromagnetic Transients and Finite Element Magnetic Field Solvers
复制标题
电磁瞬变与有限元磁场求解器的强耦合
DOI：
10.1109/tmag.2011.2152850
复制
发表时间：
2011
影响因子：
2.1
通讯作者：
J. L. Guardado
中科院分区：
文献类型：
--
作者：
E. Melgoza;C. A. Cruz;V. Venegas;R. Escarela;J. L. Guardado
变压器和旋转电机等磁性设备是现代电力系统的关键部件，而涉及它们的暂态事件的仿真是基础。本文提出了一种电力系统暂态程序与有限元场解算器强耦合的方法，消除了两个不同区域求解过程中的时间步长延迟，从而避免了可能出现的不稳定性。场模型提供了器件中磁场分布的准确计算，考虑了铁磁芯的非线性和空间效应，而网络由电路模型表示。用于耦合的瞬变程序是交替瞬变程序(ATP)，场解算器是FLD。通过与电路-场直接耦合求解器的比较，验证了该仿真方案及其实现。
Magnetic devices such as transformers and rotating electrical machines are key components of modern power systems and the simulation of transient events involving them is fundamental. In this paper, a method for strongly coupling a power systems transients program with a finite element field solver is proposed, which eliminates the time step delay in the solution of the two separate domains, and therefore avoids the instability which otherwise could arise. The field model provides an accurate computation of the magnetic field distribution in the device, taking into account the ferromagnetic core nonlinearity and spatial effects, while the electrical network is represented by a circuit model. The transients program used for the coupling is the Alternative Transients Program (ATP), and the field solver is FLD. The simulation scheme and its implementation have been verified by comparison with a directly coupled circuit-field solver.