公开(公告)号：US20240054259A1

公开(公告)日：2024-02-15

申请号：US18191149

申请日：2023-03-28

Applicant: Hunan University of Science and Technology

Inventor： Chaoyang CHEN ,  Yong ZHOU ,  Zuguo CHEN ,  Li HE ,  Zhuangxi TAN ,  Pei LI ,  Ying ZOU ,  Xiaowen WU

IPC: G06F30/20 ,  H02J3/00

CPC classification number: G06F30/20 ,  H02J3/00125 ,  H02J2203/20 ,  G06F2113/04

Abstract: Disclosed is a method for identifying fragile lines in power grid based on electrical betweenness, which comprises the following steps: constructing the power grid into a network diagram, sequentially removing lines in the network diagram, and sorting the electrical betweenness of each line from large to small; constructing a nonlinear model of complex network cascade failure considering overload and weighted edges, and respectively performing two ways of removing lines for sorted electrical betweenness, namely sequentially removing preset proportion lines and sequentially removing all lines until no new lines are removed in the network diagram; obtaining a change of generator-load power before and after each line removal, and evaluating a severity of power grid failure based on the change of generator-load power, thus completing an identification of power grid fragile lines.

公开(公告)号：US20250044803A1

公开(公告)日：2025-02-06

申请号：US18599605

申请日：2024-03-08

Applicant: Hunan University of Science and Technology

Inventor： Chaoyang CHEN ,  Zongyao LI ,  Pei LI ,  Juan CHEN ,  Zuguo CHEN ,  Ying ZOU ,  Ming LU ,  Zunhui YI ,  Lei HE ,  Liang CHEN

IPC: G05D1/24 ,  B63G8/00 ,  B63G8/39 ,  G01S15/58 ,  G05D109/30 ,  G05D111/20

Abstract: The disclosure provides a communication delay compensation method and a communication delay compensation system based on an autonomous robot, where the method includes the following steps: establishing a state equation based on a system model of an AUV positioning system; acquiring an included angle between a direction vector of AUV to an observation station and a velocity vector of AUV based on the system model; establishing an observation equation according to the state equation and the included angle; establishing an extended Kalman filter equation based on the system model, the included angle and the observation equation; and calculating a position information predicted value at the current time by using the extended Kalman filter equation to complete communication delay compensation.