基于自校正控制的电力系统分布式计算

Application of the Self-tuning Control Method to Distributed Computing of Power Systems

分布式计算一方面要求算法收敛性好、通信次数少、计算速度快,另一方面要求通信交换的数据边界化,解除子分区同构限制,保证各分区内部资源的私有性。针对这些要求,文中尝试从控制理论这一角度来分析分布式计算的分解协调问题,通过建立分布式计算过程的控制系统模型,使用自校正控制的方法构建新的分布式算法。基于自校正控制方法的分布式计算能够在保证通信数据边界化的同时,有效降低通信次数,提高算法的收敛速度。算例测试结果验证了所提出的方法的有效性。

Usually,power system calculation requires distributed computing not only with a good performance of having quick convergence and less communication times,but also capable of protecting the privacy of different dispatch centres and coping with legacy problems,which implies that only boundary conditions should be exchanged in calculation. This paper analyses the iterative decomposing and coordinating process from the control engineering point of view. Based on the control system model and aided by the self-tuning control method,the performance of the currently used distributed computing method is improved,especially in terms of convergence and communication times. Two simulation cases are used to validate the effectiveness of the proposed method.