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. 06, 2017
Filed:
Feb. 24, 2015
Research & Business Foundation Sungkyunkwan University, Suwon-si, KR;
Chul Hwan Kim, Seoul, KR;
Gi Hyeon Gwon, Suwon-si, KR;
Yun Sik Oh, Suwon-si, KR;
Ji Kyung Park, Suwon-si, KR;
Gyu Jung Cho, Gwangmyeong-si, KR;
Seung Hyun Sohn, Suwon-si, KR;
Research & Business Foundation Sungkyunkwan University, Suwon-si, KR;
Abstract
An apparatus and method for controlling adaptive reclosing based on transient stability of a power transmission line are disclosed. The apparatus includes a power angle calculation unit, an integral square error (ISE) second-order differential calculation unit, a stability determination unit, and a disconnection signal generation unit. The power angle calculation unit acquires the instantaneous value of a power angle based on voltage and phase angle measurement signals. The ISE second-order differential calculation unit acquires the instantaneous value of the second-order differential of the ISE of the power angle. The stability determination unit determines whether a system is stable or unstable based on the transitions in the instantaneous value of the second-order differential of the ISE. The disconnection signal generation unit generates a first disconnection signal and a second disconnection signal adapted to open or reclose the circuit breaker at the leader end and the circuit breaker at the follower end.