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:
May. 25, 2021
Filed:
Nov. 23, 2018
Foundation of Soongsil University-industry Cooperation, Seoul, KR;
Sung Hun Lim, Seoul, KR;
Seung Taek Lim, Seoul, KR;
Abstract
A directional overcurrent relay using a superconducting fault current limiter voltage as a relay element includes: a current measuring circuit measuring a current of a line connected from a system power source to a load, a voltage measuring circuit measuring a voltage at both ends of a superconducting fault current limiter connected to the line, and a correcting circuit correcting a tripping time Tby using a fault current Ithat is the current of the line and a superconducting fault current limiter voltage Vthat is the voltage at both ends of the superconducting fault current limiter and the tripping time Tis maintained consistently regardless of whether the superconducting fault current limiter operates or not.