文章针对配电网广域测量系统(wide area measurement system,WAMS)中相量数据集中器(phasor data concentrator,PDC)的不同通信方式造成的时延问题以及接收不同上传速率数据的问题,提出了一种基于实时数据传输的相量数据集中器设计方案...文章针对配电网广域测量系统(wide area measurement system,WAMS)中相量数据集中器(phasor data concentrator,PDC)的不同通信方式造成的时延问题以及接收不同上传速率数据的问题,提出了一种基于实时数据传输的相量数据集中器设计方案。该方案通过调整循环队列的容量大小实现数据的时间对齐,并采用多线程技术和基于TCP/IP协议的套接字通信完成相量数据集中器的实时通信任务,最后通过实验验证了该相量数据集中器可有效地适应时延以及接收不同上传速率的数据。展开更多
We investigate the Painleve integrabiiity of nonautonomous nonlinear Schr6dinger (NLS) equations with both space-and time-dependent dispersion, nonlinearity, and external potentials. The Painleve analysis is carried...We investigate the Painleve integrabiiity of nonautonomous nonlinear Schr6dinger (NLS) equations with both space-and time-dependent dispersion, nonlinearity, and external potentials. The Painleve analysis is carried out without using the Kruskal's simplification, which results in more generalized form of inhomogeneous equations. The obtained equations are shown to be reducible to the standard NLS equation by using a point transformation. We also construct the corresponding Lax pair and carry out its Kundu-type reduction to the standard Lax pair. Special cases of equations from choosing limited form of coefficients coincide with the equations from the previous Painleve analyses and/or become unknown new equations.展开更多
文摘文章针对配电网广域测量系统(wide area measurement system,WAMS)中相量数据集中器(phasor data concentrator,PDC)的不同通信方式造成的时延问题以及接收不同上传速率数据的问题,提出了一种基于实时数据传输的相量数据集中器设计方案。该方案通过调整循环队列的容量大小实现数据的时间对齐,并采用多线程技术和基于TCP/IP协议的套接字通信完成相量数据集中器的实时通信任务,最后通过实验验证了该相量数据集中器可有效地适应时延以及接收不同上传速率的数据。
基金supported by the Kyung Hee University on sabbatical leave in 2010
文摘We investigate the Painleve integrabiiity of nonautonomous nonlinear Schr6dinger (NLS) equations with both space-and time-dependent dispersion, nonlinearity, and external potentials. The Painleve analysis is carried out without using the Kruskal's simplification, which results in more generalized form of inhomogeneous equations. The obtained equations are shown to be reducible to the standard NLS equation by using a point transformation. We also construct the corresponding Lax pair and carry out its Kundu-type reduction to the standard Lax pair. Special cases of equations from choosing limited form of coefficients coincide with the equations from the previous Painleve analyses and/or become unknown new equations.