基于MPI并行计算的大规模电力系统电压稳定极限求解

摘要

针对求解大规模电力系统的电压稳定极限,利用P-V曲线的拟二次性对连续潮流法进行了改进。采用了自适应步长变化的控制策略,加速电压稳定极限点的求取。将基于MPI的并行处理技术引入到连续潮流法的求解过程中,并针对并行方案优化了存储空间,以提高运算效率。最后以IEEE标准系统和实际大型系统为检验算例,通过与传统的连续潮流法作比较,验证了该并行算法在计算速度上的优越性和计算结果的准确性。%In order to solve the voltage stability limit of large-scale power system more quickly and more effectively, in this paper, continuation power flow method is improved by using the approximate-quadric character of PV curve and adaptive step control strategy. Meanwhile, parallel processing technique based on MPI is introduced and adopted to optimize the storage space, so as to improve the computational efficiency. Finally, the analysis of a number of IEEE power systems and the practical large-scale power systems validates the advantage in terms of computation speed and its correctness, compared with traditional continuation Dower flow method.