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:
Oct. 29, 2019
Filed:
Aug. 18, 2017
Applicants:
Nr Electric Co., Ltd, Jiangsu, CN;
Nr Engineering Co., Ltd, Jiangsu, CN;
Inventors:
Zhaoqing Hu, Jiangsu, CN;
Yunlong Dong, Jiangsu, CN;
Ke Wang, Jiangsu, CN;
Haiying Li, Jiangsu, CN;
Dongming Cao, Jiangsu, CN;
Assignees:
NR ELECTRIC CO., LTD, Jiangsu, CN;
NR ENGINEERING CO., LTD, Jiangsu, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02H 7/26 (2006.01); H02M 1/32 (2007.01); H02J 3/36 (2006.01);
U.S. Cl.
CPC ...
H02H 7/26 (2013.01); H02J 3/36 (2013.01); H02M 1/32 (2013.01);
Abstract
A fault current limiting control and protection coordination method for a converter of a flexible direct current transmission system operating in an islanding state is provided. The current output command limit Imax is used to limit the current commands of inner loop currents, and in the event of a fault, Imax is set equal to or slightly larger than a value for an AC line overcurrent protection section.