Invention Application
- Patent Title: HIGH-FIDELITY VOLTAGE MEASUREMENT USING RESISTIVE DIVIDER IN A CAPACITANCE-COUPLED VOLTAGE TRANSFORMER
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Application No.: US16139948Application Date: 2018-09-24
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Publication No.: US20190094287A1Publication Date: 2019-03-28
- Inventor: Edmund O. Schweitzer, III , Veselin Skendzic
- Applicant: Schweitzer Engineering Laboratories, Inc.
- Applicant Address: US WA Pullman
- Assignee: Schweitzer Engineering Laboratories, Inc.
- Current Assignee: Schweitzer Engineering Laboratories, Inc.
- Current Assignee Address: US WA Pullman
- Main IPC: G01R31/08
- IPC: G01R31/08 ; H01F38/24 ; H01F38/32 ; G01R15/06 ; G01R15/16 ; G01R1/20 ; G01R31/02

Abstract:
The present disclosure pertains to systems and methods for detecting traveling waves in electric power delivery systems. In one embodiment, a system comprises a capacitance-coupled voltage transformer (CCVT) in an electric power delivery system, the CCVT comprising a first capacitor disposed between an electrical bus and a first electrical node, and a second capacitor electrically disposed between the first electrical node and a ground connection. A resistive divider in electrical communication with a first node may generate a resistive divider electrical signal corresponding to a voltage value. An intelligent electronic device (IED) in electrical communication with the resistive divider monitors a resistive divider voltage signal. The IED detects a traveling wave based on the resistive divider voltage signal and a measurement of a primary current through an electrical bus in electrical communication with the CCVT; and analyzes the traveling wave to detect a fault on the electric power delivery system.
Public/Granted literature
- US10345363B2 High-fidelity voltage measurement using resistive divider in a capacitance-coupled voltage transformer Public/Granted day:2019-07-09
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