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Patent Searching and Data


Title:
SECURE TRAVELING WAVE DISTANCE PROTECTION IN AN ELECTRIC POWER DELIVERY SYSTEM
Document Type and Number:
WIPO Patent Application WO/2019/060706
Kind Code:
A3
Abstract:
The present disclosure pertains to systems and methods for monitoring traveling waves in an electric power system. In various embodiments, a data acquisition subsystem may acquire electric power system signals. A traveling wave detection subsystem may detect two or more traveling waves based on the electric power system signals and determine a location of an event triggering the traveling waves. A traveling wave security subsystem may selectively generate a restraining signal based on the location of the event as within a blocking zone. A protection action subsystem may implement a protective action when the location is outside of a blocking zone. In various embodiments, a protective action will not be implemented for traveling waves launched from known locations of switching devices operating normally. Further, protective actions may be restrained if a magnitude of a traveling wave differs from an expected value based on a pre-fault voltage.

Inventors:
SCHWEITZER EDMUND O (US)
KASZTENNY BOGDAN Z (CA)
Application Number:
PCT/US2018/052196
Publication Date:
March 26, 2020
Filing Date:
September 21, 2018
Export Citation:
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Assignee:
SCHWEITZER ENGINEERING LAB INC (US)
International Classes:
G01R31/08; G01R31/28; G05B9/02
Domestic Patent References:
WO2016177407A12016-11-10
Foreign References:
US20170082675A12017-03-23
US20090230974A12009-09-17
US20170012424A12017-01-12
Attorney, Agent or Firm:
EDGE, Richard M. (US)
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