Partial discharge sensor

US11486919B2 · kind B2 · utility

Assignees

• Palo Alto Research Center Incorporated · US
• General Electric Company · US
• CONSOLIDATED EDISON COMPANY OF NEW YORK, INC. · US

Inventors

• Todd Karin · Berkeley, US
• Peter Kiesel · Palo Alto, US
• Ajay Raghavan · Mountain View, US
• Robert T. Stinson, IV · Stonewall, US
• Malcolm Graham Smith, Jr. · Fillmore, US
• Jane Shin · Seattle, US
• Serena Lee · New York, US
• Bradley Kittrell · New York, US

Key dates

• Filing date: Oct 24, 2019
• Grant date: Nov 1, 2022
• Expiry date: Sep 11, 2040

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01B9/065
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An approach to detecting partial discharge events involves retrofitting an electrical system to include a capacitive sensor configured to capacitively sense partial discharge events of a component of the electrical system. The capacitive sensor has a first electrical conductor that forms a first terminal of the capacitive sensor, a second electrical conductor that forms a second terminal of the capacitive sensor, and a dielectric that separates the first electrical conductor and the second electrical conductor. The capacitive sensor generates an electrical sensor signal at an output of the capacitive sensor in response to the partial discharge event. The electrical sensor signal is converted to an optical signal and the optical signal is processed to detect an occurrence of the partial discharge event.