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:
Jul. 16, 2024
Filed:
Jul. 09, 2021
North China Electric Power University, Beijing, CN;
Abstract
The disclosure relates to a method and system for AC line distance protection in AC/DC hybrid power grid, and storage medium. The method comprises: collecting the operation parameters of inverter-side converter, AC parameters, converter bus voltage, current at distance protection installation and operation parameters of the smoothing reactor of inverter station; determining the conduction state of the inverter-side converter according to the operation parameters of the inverter-side converter; determining the current fed into the AC system from the DC system corresponding to the conduction state according to the operation parameters of the inverter-side converter, the operation parameters of the smoothing reactor of the inverter station and the converter bus voltage; determining the virtual fault location and virtual transition resistance according to fault types and AC parameters; controlling the corresponding protection device to perform the protection action according to the virtual fault location and virtual transition resistance.