what is STUB protection in tranmission system and switch
yard area?
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Answer Posted / m. usman ali
During a line open condition with the station breakers
closed, the bus between the station breakers and line
disconnect for ring bus and breaker and a half/third
configurations may not be protected. The line protection
system shall be capable of protecting the open stub through
the use of overcurrent protection. This protection shall
also function correctly for the case where the potential
transformers for the line protection are located on the
line side of line disconnect whether or not the line is
energized from the remote end.
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