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公开(公告)号：US20240305089A1
公开(公告)日：2024-09-12
申请号：US18179499
申请日：2023-03-07
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Gandhali P. Juvekar , Yanfeng Gong
CPC classification number: H02H7/226 , G01R31/086 , G01R31/088
Abstract: A method and a system are used to monitor electrical measurements of a power system during a period of time. The system calculates and analyzes incremental quantities based on the electrical measurements of the power system. The incremental quantities are used to identify a conductor breaking fault in the power system. Instructions are sent out to activate certain actions (e.g., protective actions) based on the identified fault and the type of fault. The system operates continuously to provide real-time monitoring and fault identification.
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公开(公告)号：US20250147123A1
公开(公告)日：2025-05-08
申请号：US18503273
申请日：2023-11-07
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Yanfeng Gong , Normann Fischer , Gandhali P. Juvekar , Kanchanrao Gangadhar Dase
Abstract: The present disclosure relates to systems and methods to detect a fault in an electric power system. One embodiment may detect a single phase broken conductor in a multi-phase electric power system. An intelligent electronic device (IED) may receive a plurality of measurements over time of a current through an electrical conductor in the electric power system. Based on the measurements of the current, a fault detection subsystem may determine a zero-sequence current, a negative-sequence current, and a positive-sequence current. The fault detection subsystem may determine a ratio of the zero-sequence current, the negative-sequence current, and the positive-sequence current, and may monitor the ratio over time. The fault detection subsystem may identify the broken conductor condition based on the ratio and a fault detection region. A protective action subsystem may implement a protective action based on identification of the broken conductor condition.
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