公开(公告)号：US20180143224A1

公开(公告)日：2018-05-24

申请号：US15462831

申请日：2017-03-18

Applicant: University of Electronic Science and Technology of China

Inventor： Qi Huang ,  Arsalan Habib Khawaja ,  Ai Zheng ,  Shi Jing ,  Jian Li ,  Zhenyuan Zhang ,  Jianbo Yi

IPC: G01R15/20 ,  G01D5/14

CPC classification number: G01R15/148 ,  G01R19/2513

Abstract: The invention discloses a monitoring system for estimation of phase conductor parameters of overhead high voltage transmission lines. Particularly, these parameters include electric current, conductor clearance from ground and wind induced conductor motion. This is realized by utilizing magnetic field sensing at various points or of various components with state of art Tunnel Magneto resistive sensors. The measured data is then divided into two groups, where one group performs the reconstruction using magnetic field and the other group validates the reconstructed results. For each group, initial conductor to sensor position coefficients are stored in two different sensitivity matrices in memory. For a change in conductor spatial position, the sensitivity matrices are altered which is estimated for each group and then validated by comparison. Errors in the reconstruction process are minimized by sensor placement at optimal points which ensures the condition number remains close to unity.

公开(公告)号：US10386391B2

公开(公告)日：2019-08-20

申请号：US15462831

申请日：2017-03-18

Applicant: University of Electronic Science and Technology of China

Inventor： Qi Huang ,  Arsalan Habib Khawaja ,  Ai Zheng ,  Shi Jing ,  Jian Li ,  Zhenyuan Zhang ,  Jianbo Yi

IPC: G01R15/14 ,  G01R19/25

Abstract: The invention discloses a monitoring system for estimation of phase conductor parameters of overhead high voltage transmission lines. Particularly, these parameters include electric current, conductor clearance from ground and wind induced conductor motion. This is realized by utilizing magnetic field sensing at various points or of various components with state of art Tunnel Magneto resistive sensors. The measured data is then divided into two groups, where one group performs the reconstruction using magnetic field and the other group validates the reconstructed results. For each group, initial conductor to sensor position coefficients are stored in two different sensitivity matrices in memory. For a change in conductor spatial position, the sensitivity matrices are altered which is estimated for each group and then validated by comparison. Errors in the reconstruction process are minimized by sensor placement at optimal points which ensures the condition number remains close to unity.