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:
Jan. 20, 2004
Filed:
Jul. 22, 2002
Isao Iyoda, Tokyo, JP;
Koji Temma, Tokyo, JP;
Katsuhiko Matsuno, Tokyo, JP;
Yoshinao Matsushita, Osaka, JP;
Other;
Abstract
When a voltage of a system is stabilized by connecting the system with two types of voltage regulators, i.e., a slow-response tap-changing transformer and a quick-response reactive power regulator, it is not always clear how characteristics of the reactive power regulator should be regulated. Moreover, the regulation takes much time. In a range where voltage fluctuation of the system is small and a tap-changing transformer can cope with the change, gain of a reactive power regulator is set to be low, and its output is restrained. In a range where voltage fluctuation of the system is large and the voltage deviates from a width of a dead zone of the tap-changing transformer, gain of the reactive power regulator is set to be high, and regulating current is fully utilized.