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将长期电压稳定场景下的协调电压控制问题用带有微分—代数方程约束的最优控制模型来描述,借助Radau排列技术将这个动态优化问题转化为大型非线性规划模型,并采用非线性原—对偶内点法求解。重点探讨如何应用多波前方法结合近似最小度排序提高求解稀疏线性修正方程的效率。以IEEE 17机162节点系统和新英格兰10机39节点系统作为算例,通过与近似最小度法和反向Cuthill-McKee法排序下三角分解结果进行对比,证实了所述方法在计算速度上的优越性。
Under the condition of long-term voltage stability, the problem of coordinated voltage control is described by the optimal control model with the constraint of differential-algebraic equations. This dynamic optimization problem is transformed into a large-scale nonlinear programming model by using Radau arrangement technique. Solution of dual interior point method. This paper focuses on how to improve the efficiency of solving the sparse linear correction equation by using the multi-wave front method and the approximate minimum order. The IEEE 17-machine 162-node system and the New England 10-machine 39-bus system are taken as examples and compared with the results of the lower triangular method of approximate Cuthill-McKee method and ordered inverse Cuthill-McKee method. It is proved that the proposed method is computationally efficient Superiority.