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:
Nov. 17, 2009
Filed:
Feb. 05, 2007
Ernst Scholtz, Raleigh, NC (US);
Reynaldo F. Nuqui, Cary, NC (US);
Danny Julian, Willow Springs, NC (US);
Alan R. Grightmire, Apex, NC (US);
Ernst Scholtz, Raleigh, NC (US);
Reynaldo F. Nuqui, Cary, NC (US);
Danny Julian, Willow Springs, NC (US);
Alan R. Grightmire, Apex, NC (US);
ABB Research Ltd., Zurich, CH;
Abstract
A sag calculator () computes sag for a span of a line section based at least in part upon an average temperature of the conductors in the line section. A temperature calculator () determines the temperature by ascertaining an ohmic resistance of the conductor lines based at least in part upon time-synchronized power system voltage and current measurements such as (but not limited to) phasor measurements generated by phasor measurement units (). The temperature calculator () determines the temperature as a function of the ohmic resistance.