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:
Aug. 19, 2014
Filed:
Jan. 30, 2011
Applicants:
Liang Cao, Changzhou, CN;
Hao He, Changzhou, CN;
Jianyang Yu, Changzhou, CN;
Jiaohong Luo, Changzhou, CN;
Zhen Xu, Changzhou, CN;
Inventors:
Liang Cao, Changzhou, CN;
Hao He, Changzhou, CN;
Jianyang Yu, Changzhou, CN;
Jiaohong Luo, Changzhou, CN;
Zhen Xu, Changzhou, CN;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02H 3/08 (2006.01); H02H 7/16 (2006.01);
U.S. Cl.
CPC ...
H02H 3/08 (2013.01); H02H 7/16 (2013.01);
Abstract
A harmonic protection method for a capacitor bank uses a harmonic protection apparatus, which includes a CPU unit, a current and voltage sampling unit, and a protection device. The CPU unit obtains effective value Iof fundamental wave current of the capacitor bank, and effective value Iof the n-th harmonic wave current of the capacitor bank, where n is harmonic order and ranges from 2 to ∞, and calculates the true effective value I of current of the capacitor bank by