The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 08, 2021
Filed:
Jan. 29, 2018
Tianjin University, Tianjin, CN;
TIANJIN UNIVERSITY, Tianjin, CN;
Abstract
There is provided a method for identifying fault types of HVDC physical transmission line, including: measuring positive and negative voltage values and current values at a j-terminal and k-terminal of the HVDC physical transmission line, and converting them to voltage and current values under mode components; calculating differential current values of travelling wave at the j-terminal and k-terminal under zero-mode and one-mode components of the HVDC physical transmission line, respectively; comparing with the calculated differential current value at the one-mode components under the current time t and the same at time t−tto determine whether the HVDC physical transmission line is faulty; converting differential current values of the travelling wave at the j-terminal and k-terminal under the mode components to differential current values under the maximum amount, respectively; calculating fault type coefficients of both terminals; and identifying the fault types based on the fault type coefficients.