- Patent Title: Detection and correction of fault induced delayed voltage recovery
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Application No.: US14629292Application Date: 2015-02-23
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Publication No.: US09798342B2Publication Date: 2017-10-24
- Inventor: Krishnanjan Gubba Ravikumar , Scott M. Manson
- 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 Jared L. Cherry; Richard M. Edge
- Main IPC: G05F1/625
- IPC: G05F1/625 ; H02P8/36

Abstract:
Disclosed herein are methods for detecting and correcting a fault induced delayed voltage recovery event in an electric power transmission and distribution system. In some embodiments, a fault detection subsystem may receive an indication of a fault in the electric power transmission and distribution system. The system may also include a load analysis subsystem to analyze a plurality of loads supplied by the electric power system and to generate an estimated response of the loads. A fault analysis subsystem may analyze a plurality of factors relating to the fault and to determine a probability of the fault generating a fault induced delayed voltage recovery event. A control system may then implement a control strategy within a control window following the fault based on the probability of the fault generating a fault induced delayed voltage recovery event and the estimated response of the at least one load.
Public/Granted literature
- US20160246666A1 DETECTION AND CORRECTION OF FAULT INDUCED DELAYED VOLTAGE RECOVERY Public/Granted day:2016-08-25
Information query
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