论文标题
内部代数可变处理对瞬态稳定性模拟性能的影响
Impact of Internal Algebraic Variable Treatment on Transient Stability Simulation Performance
论文作者
论文摘要
一般的观念是，在瞬态稳定性模拟中，减少差分 - 代数方程（DAE）的代数变量数量可以改善模拟性能。许多仿真程序将整体模型内部内部的代数变量从完整的DAE中拆分，并使用先前迭代的结果在每个迭代步骤之外评估它们。在求解当前迭代时，更新的内部变量然后将其视为常数。这封信讨论了这种分裂配方如何影响模拟性能。使用具有同步发电机和转换器模型的各种系统的案例研究表明了分裂对收敛模式和仿真性能的影响。
It is a general notion that, in transient stability simulations, reducing the number of algebraic variables for the differential-algebraic equations (DAE) can improve the simulation performance. Many simulation programs split algebraic variables internal to a dynamic model from the full DAE and evaluate them outside each iterative step, using results from the previous iteration. The updated internal variables are then treated as constants when solving for the current iteration. This letter discusses how such a split formulation can impact simulation performance. Case studies using various systems with synchronous generator and converter models demonstrate the impact of the split on the convergence pattern and simulation performance.
