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:
Mar. 19, 2014
Mitsubishi Electric Corporation, Chiyoda-ku, JP;
MITSUBISHI ELECTRIC CORPORATION, Chiyoda-Ku, Tokyo, JP;
Abstract
In a reactive power compensation device, a control unit controls a magnitude of reactive power to be output by a reactive power output unit, based on a detected system voltage and one or more control parameters in a first operation mode. In a second operation mode, the control unit changes the magnitude of the reactive power to be output by the reactive power output unit to a power system in an output change period, calculates system impedances of the power system at a plurality of detection time points within the output change period, based on change amounts of the system voltage detected at the plurality of detection time points and corresponding change amounts of the reactive power, and, when a variation in the calculated system impedances is within an acceptable range, adjusts the one or more control parameters, based on the calculated system impedances.