公开(公告)号：US12238161B2

公开(公告)日：2025-02-25

申请号：US18817356

申请日：2024-08-28

Applicant: SHANDONG UNIVERSITY

Inventor： Yuanyuan Sun ,  Lei Ding ,  Qingshen Xu ,  Yahui Li ,  Quanrui Hao ,  Kaiqi Sun ,  Shulin Yin ,  Bowen Li ,  Ruize Sun ,  Pengbo Shan ,  Demin Qi ,  Qianqian Li

IPC: H04L67/10

Abstract: The invention belongs to the technical field of harmonic contribution evaluation, and particularly relates to a system for tracing harmonic sources based on a cloud-edge-terminal collaboration and a method thereof, comprising: terminal module, collecting and transmitting real-time harmonic data to edge module; edge module, comprising plurality of edge computing servers deployed for the transformer substations and the transformer districts by units, realizing hierarchical control between edge computing servers according to voltage levels, and transmitting harmonic sources tracing task through hierarchical interactions between the edge computing servers; the edge computing server receiving harmonic sources tracing service request performs the tracing task, and feeds tracing result back to central module; and, central module, comprising cloud server receiving harmonic sources tracing service request initiated by user, determining edge computing server offloaded by the request, storing final tracing result from entire the system, and matching typical harmonic source according to disturbance source information.

公开(公告)号：US20240422213A1

公开(公告)日：2024-12-19

申请号：US18817356

申请日：2024-08-28

Applicant: SHANDONG UNIVERSITY

Inventor： Yuanyuan SUN ,  Lei Ding ,  Qingshen Xu ,  Yahui Li ,  Quanrui Hao ,  Kaiqi Sun ,  Shulin Yin ,  Bowen Li ,  Ruize Sun ,  Pengbo Shan ,  Demin Qi ,  Qianqian Li

IPC: H04L67/10

Abstract: The invention belongs to the technical field of harmonic contribution evaluation, and particularly relates to a system for tracing harmonic sources based on a cloud-edge-terminal collaboration and a method thereof, comprising: terminal module, collecting and transmitting real-time harmonic data to edge module; edge module, comprising plurality of edge computing servers deployed for the transformer substations and the transformer districts by units, realizing hierarchical control between edge computing servers according to voltage levels, and transmitting harmonic sources tracing task through hierarchical interactions between the edge computing servers; the edge computing server receiving harmonic sources tracing service request performs the tracing task, and feeds tracing result back to central module; and, central module, comprising cloud server receiving harmonic sources tracing service request initiated by user, determining edge computing server offloaded by the request, storing final tracing result from entire the system, and matching typical harmonic source according to disturbance source information.

公开(公告)号：US12278492B1

公开(公告)日：2025-04-15

申请号：US18982070

申请日：2024-12-16

Applicant: SHANDONG UNIVERSITY

Inventor： Yuanyuan Sun ,  Pengbo Shan ,  Yahui Li ,  Lei Ding ,  Kejun Li ,  Kaiqi Sun ,  Zhijie Liu ,  Yirou Lai ,  Zhijie Ma ,  Qianqian Li

IPC: H02J3/01 ,  H02J3/38

Abstract: The present invention provides a method and system of self-adaptive setting of closed-loop parameters for suppressing PV coupling harmonics, comprising: acquiring node voltages and node currents of PV grid-connected inverters; constructing harmonic coupling admittance matrix according to the node voltages and node currents; calculating an amplitude of each element in the constructed harmonic coupling admittance matrix; screening contribution sources of coupling harmonics according to the calculated amplitude of the each element; evaluating quantitatively harmonic admittance of the PV grid-connected inverter according to screened contribution sources; and, carrying out optimization iteration for double-closed-loop PI control parameters of inverter with objective of minimizing the coupling harmonics of the PV grid-connected inverter according to results of the quantitative evaluation of the harmonic admittance, to complete self-adaptive setting of closed-loop parameters for suppressing PV coupling harmonics.