Circuit breaker failure protection in a power substation

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United States of America Patent

PATENT NO 10916936
APP PUB NO 20190036329A1
SERIAL NO

16150510

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Abstract

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A method for circuit breaker failure (CBF) protection in a power substation is disclosed. The power substation includes a first circuit breaker (CB), a second CB coupled to the first CB, a feeder coupled to the first CB and the second CB, a power plant coupled to the feeder, a first plurality of CBs coupled to the first CB, and a second plurality of CBs coupled to the second CB. The method includes sending a first stage tripping command to the first CB and the second CB to trip the first CB and the second CB responsive to a non-high current tripping command being active for a first period of time, and one of a current condition and an energization condition being satisfied for the first period of time, sending a first second-stage tripping command to the first plurality of CBs to trip the first plurality of CBs responsive to the non-high current tripping command being active for a second period of time, and one of the current condition and the energization condition being satisfied for the second period of time, and sending a second second-stage tripping command to the second plurality of CBs to trip the second plurality of CBs responsive to the non-high current tripping command being active for a third period of time, and one of the current condition and the energization condition being satisfied for the third period of time. The second period of time and the third period of time may be longer than the first period of time.

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Patent Owner(s)

Patent OwnerAddress
MAPNA POWER PLANTS CONSTRUCTION & DEVELOPMENT CO (MD1)NO 15 CORNER OF ZHUBIN ALLEY SOUTH OF HAGHANI CROSSROAD AFRICA BLVD TEHRAN

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Faraji, Mohammad Nabi Tehran, IR 1 1
Kayvan, Nader Tehran, IR 1 1
Moatar, Rashkhari Sina Tehran, IR 1 1
Rezaei, Jegarluei Mohammad Tehran, IR 1 1

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