通过采用高速电力网载波通信HPLC等新型的通讯技术,实现了对低压配电平台的电表信息多频段实时收集,并通过对电表的时序电气量信息(包含压力、流量、相位角等)内部的关联性及其应用生成树的方法,进行了低压台区配电网实际拓扑识别工作...通过采用高速电力网载波通信HPLC等新型的通讯技术,实现了对低压配电平台的电表信息多频段实时收集,并通过对电表的时序电气量信息(包含压力、流量、相位角等)内部的关联性及其应用生成树的方法,进行了低压台区配电网实际拓扑识别工作。与需要使用复杂硬件装置的现有低温平台拓扑识别技术比较,所提技术仅采用单纯软件方法就可进行拓扑识别,减少了实际配置管理的工作量,更能满足当前复杂多变的中低压配电网络条件。由于采用了同步测量和高频采集两个方法,和其他采用纯软件方法进行拓扑发现的方法比较,既保证了信息的高同步性,又避免了动态时间规整化(dynamic time warping,DTW)计算易受噪音危害的问题,更能准确表达拓扑的变化规律,使低压台区电力拓扑判定更为精确。展开更多
Based on the φ-mapping topological current theory and the decomposition of gauge potential theory, the vortex lines and the monopoles in electrically conducting plasmas are studied. It is pointed out that these two t...Based on the φ-mapping topological current theory and the decomposition of gauge potential theory, the vortex lines and the monopoles in electrically conducting plasmas are studied. It is pointed out that these two topological structures respectively inhere in two-dimensional and three-dimensional topological currents, which can be derived from the same topological term n^→·(Эin^→×Эjn^→), and both these topological structures axe characterized by the φ-mapping topological numbers-Hopf indices and Brouwer degrees. Furthermore, the spatial bifurcation of vortex lines and the generation and annihilation of monopoles are also discussed. At last, we point out that the Hopf invaxiant is a proper topological invaxiant to describe the knotted solitons.展开更多
文摘通过采用高速电力网载波通信HPLC等新型的通讯技术,实现了对低压配电平台的电表信息多频段实时收集,并通过对电表的时序电气量信息(包含压力、流量、相位角等)内部的关联性及其应用生成树的方法,进行了低压台区配电网实际拓扑识别工作。与需要使用复杂硬件装置的现有低温平台拓扑识别技术比较,所提技术仅采用单纯软件方法就可进行拓扑识别,减少了实际配置管理的工作量,更能满足当前复杂多变的中低压配电网络条件。由于采用了同步测量和高频采集两个方法,和其他采用纯软件方法进行拓扑发现的方法比较,既保证了信息的高同步性,又避免了动态时间规整化(dynamic time warping,DTW)计算易受噪音危害的问题,更能准确表达拓扑的变化规律,使低压台区电力拓扑判定更为精确。
基金supported by the National Natural Science Foundation of Chinathe Cuiying Programme of Lanzhou University
文摘Based on the φ-mapping topological current theory and the decomposition of gauge potential theory, the vortex lines and the monopoles in electrically conducting plasmas are studied. It is pointed out that these two topological structures respectively inhere in two-dimensional and three-dimensional topological currents, which can be derived from the same topological term n^→·(Эin^→×Эjn^→), and both these topological structures axe characterized by the φ-mapping topological numbers-Hopf indices and Brouwer degrees. Furthermore, the spatial bifurcation of vortex lines and the generation and annihilation of monopoles are also discussed. At last, we point out that the Hopf invaxiant is a proper topological invaxiant to describe the knotted solitons.