- 专利标题: HIGH-FIDELITY VOLTAGE MEASUREMENT USING RESISTIVE DIVIDER IN A CAPACITANCE-COUPLED VOLTAGE TRANSFORMER
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申请号: US16139948申请日: 2018-09-24
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公开(公告)号: US20190094287A1公开(公告)日: 2019-03-28
- 发明人: Edmund O. Schweitzer, III , Veselin Skendzic
- 申请人: Schweitzer Engineering Laboratories, Inc.
- 申请人地址: US WA Pullman
- 专利权人: Schweitzer Engineering Laboratories, Inc.
- 当前专利权人: Schweitzer Engineering Laboratories, Inc.
- 当前专利权人地址: US WA Pullman
- 主分类号: G01R31/08
- IPC分类号: G01R31/08 ; H01F38/24 ; H01F38/32 ; G01R15/06 ; G01R15/16 ; G01R1/20 ; G01R31/02
摘要:
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.
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