基于隐枚举法的稳定控制优化切机方法

由于电网规模的迅速发展,故障紧急情况下稳定控制系统切机对象数目的增加,传统基于穷举法的优化切机方法已经不能满足大规模电网稳定控制系统快速切机的要求。为了提高优化切机问题的求解效率,文中提出了基于隐枚举法的优化切机方法。该方法根据优化切机问题的特点制定剪枝策略,能够有效减少枚举过程中需要计算的切机组合数,从而提高了计算效率。切机实例的计算和实际装置的仿真结果表明,文中所述方法能够减少约70%的优化计算时间,实现稳定控制系统的快速切机。

Optimal Generator Tripping Scheme Based on Implicit Enumeration Method

Owing to the rapid development of the scale of power grids and increase in the object number of generator trippings implemented by the power stability control system in fault emergency situations, the traditional optimal generator tripping scheme based on the exhaustive method can no longer meet the requirements of fast tripping in the large-scale power grid stability control system. In order to improve the computational efficiency of the optimal combination of generator trippings, an optimal generator tripping scheme is put forward based on the implicit enumeration method. According to the characteristics of the optimal problem of generator tripping, a pruning strategy is formulated to increase the computational efficiency by effectively reducing the calculation number of generator combinations during the enumeration process. It is shown by simulation results of an example that the optimal generator tripping scheme based on the implicit enumeration method can reduce about 70% of the optimal computation time, realizing fast generator tripping by the power stability control system.