Apparatus, method and computer program product for tracking information in an electric grid

US7940131B2 · kind B2 · utility

Assignee

• General Electric Company · US

Inventors

• Haiqing Weng · Shanghai, CN
• John D. D'Atre · Ballston Lake, US
• Robert Allen Seymour · Roanoke, US
• Allen Michael Ritter · Roanoke, US
• Xiaoming Yuan · 红钢城街道, CN
• Renchang Dai · Shanghai, CN
• Robert William Delmerico · Clifton Park, US

Key dates

• Filing date: Aug 22, 2008
• Grant date: May 10, 2011
• Expiry date: Feb 13, 2029

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04B2203/5466
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An apparatus for rapidly tracking fundamental frequency information in the signal of an electric grid is a cross-coupled phase-lock loop filter (CCPLL) that includes the use of a phase-lock-loop (PLL) apparatus having a plurality individual filters, wherein an input for a first filter in the plurality of individual filters comprises the signal of the electric grid and an output signal from at least a second filter in the plurality of individual filters. A method for using the CCPLL includes applying a signal to the CCPLL and monitoring the output of the CCPLL. Use of the CCPLL may be accomplished or modeled via computer instructions stored on machine readable media.