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. 25, 2002
Filed:
Jun. 26, 2000
Bai-Lin Qin, Pullman, WA (US);
Armando Guzman-Casillas, Pullman, WA (US);
Schweitzer Engineering Laboratories, Inc., Pullman, WA (US);
Abstract
The system uses graph theory to define busline arrangements as a series of vertices and edges, wherein the vertices include the number of busses in the system and the edges include disconnect circuit branches connecting the individual vertices. A particular system configuration, selected by the system operator, determines the status (open or closed) of the various disconnect branches. A processor establishes an incident graph matrix, including positions of all the vertices and edges. The matrix is modified in accordance with graph theory and the condition of the disconnect switches. Graph operations are performed to produce a resulting matrix which defines vertices and the edges incident thereon into zones of protection. Fault analysis in the busline can then be performed in accordance with each zone of protection.