Invention Grant
- Patent Title: Trapped charge estimation
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Application No.: US16742039Application Date: 2020-01-14
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Publication No.: US11476655B2Publication Date: 2022-10-18
- Inventor: Ritwik Chowdhury , Gabriel Benmouyal , Carolyn Sun
- 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
- Agent Bradley W. Schield; Richard M. Edge
- Main IPC: H02H1/00
- IPC: H02H1/00 ; H02J3/04 ; H02J13/00 ; H02H3/00 ; G01R19/00 ; G01R31/58 ; G01R29/24 ; G05B19/042

Abstract:
Systems and methods to estimate trapped charge for a controlled automatic reclose are described herein. For example, an intelligent electronic device (IED) may calculate an analog amount of trapped charge of each phase of a power line based on voltage measurements of the power line. The IED may close a switching device of each phase at a time corresponding to a point-on-wave associated with the analog amount of trapped charge of the respective phase.
Public/Granted literature
- US20210218239A1 TRAPPED CHARGE ESTIMATION Public/Granted day:2021-07-15
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