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:
Dec. 08, 2009
Filed:
Jan. 12, 2007
Masao Mabuchi, Moriyama, JP;
Yasuhiro Tsubota, Moriyama, JP;
Nobuyuki Toyoura, Moriyama, JP;
Seiji Oka, Ritto, JP;
Shinichi Hosomi, Otsu, JP;
Masaya Kato, Kusatsu, JP;
Kazuyoshi Imamura, Kusatsu, JP;
Masao Mabuchi, Moriyama, JP;
Yasuhiro Tsubota, Moriyama, JP;
Nobuyuki Toyoura, Moriyama, JP;
Seiji Oka, Ritto, JP;
Shinichi Hosomi, Otsu, JP;
Masaya Kato, Kusatsu, JP;
Kazuyoshi Imamura, Kusatsu, JP;
Omron Corporation, Kyoto-Shi, JP;
Abstract
An isolated operation detecting method according to the present invention includes: a first step that injects a power fluctuation into the power system; a second step that measures a system cycle; a third step that adjusts the injection of the power fluctuation so that the system cycle increases when the system cycle is found increased than the previous system cycle as a result of the measuring, and decreases when the system cycle is found decreased than the previous system cycle; a fourth step that produces a change pattern of a latest system cycle on the basis of a deviation of the latest system cycle from a fixed number of cycle-passed previous system cycle; and a fifth step that determines an isolated operation on the basis of the change pattern.