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.

Date of Patent:
May. 09, 2000

Filed:

Aug. 05, 1999
Applicant:
Inventors:

Minoru Kanoi, Tokai-mura, JP;

Yuzuru Imamura, Hitachi, JP;

Saburou Yasukawa, Hitachinaka, JP;

Kiyoji Iwashita, Hitachi, JP;

Toru Takei, Hitachinaka, JP;

Hiroyuki Kudo, Hitachi, JP;

Junzo Kawakami, Mito, JP;

Kazuo Nishijima, Hitachinaka, JP;

Hiroshi Inoue, Hitachi, JP;

Assignee:

Hitachi, Ltd., Tokyo, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R / ; G05B / ;
U.S. Cl.
CPC ...
700291 ; 700286 ; 34082506 ; 702 58 ; 702 61 ; 702 64 ;
Abstract

An electrical power distribution monitoring system is provided for a power distribution line having a plurality of sections with a plurality of electrical loads connected to the power distribution line to form a power distribution network. The monitoring system has at least one sensor for at least one present electrical value at least one point of the network, and estimates electrical values for at least one section of the line in dependence on both of present electrical values measured by the sensor and data relating to past power consumption by loads connected to the line. Improved prediction of actual conditions in the distribution line can be obtained.


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