Phase identification system and method

US8050879B2 · kind B2 · utility

Assignee

• General Electric Company · US

Inventors

• Glen Peter Koste · Niskayuna, US
• John Erik Hershey · Ballston Lake, US
• Harold Woodruff Tomlinson, Jr. · Liverpool, US
• Pierino Gianni Bonanni · Clifton Park, US
• Amol Rajaram Kolwalkar · Bengaluru, IN

Key dates

• Filing date: Dec 2, 2009
• Grant date: Nov 1, 2011
• Expiry date: Dec 2, 2029

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R19/2513
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method to identify phase is presented. The method includes obtaining electrical parameters at a node and a substation of an electrical grid, processing the electrical parameters of the node and the substation into processed electrical parameters comprising at least one of a voltage harmonic amplitude, a current harmonic amplitude, a geometric harmonic modulated signal, and a noise pattern. The method further includes comparing the processed electrical parameters from the node and the substation and identifying phase information of the node with respect to the substation.