Just trying to get a feel for what is out there....For a typical combined or simple cycle power plant (138kV-500kV) what are typical distances between the plant (GSU HV terminals) and switchyard (CBs in corresponding configuration; double breaker, breaker and half, etc)? Max distance anyone has...
This is a hypothetical scenario considering that there is no protection is in place to prevent the following:
While backfeeding a combined cycle power plant via the GSU [HS (System Side) connected in Wye and LS (Gen Side) in Delta] the upstream switchyard breaker opens but only:
a) 1 pole...
Can anyone differentiate the philosophy behind tripping on 59N vs. alarming on a 59N?
Factors for consideration include:
This is in a Combustion Turbine Generating Unit.
VT on the LV side of the Generator Step Up Tx (after the Generator circuit breaker) is providing the open delta potential...
Can anyone see any other drawbacks to using a Circuit Breaker instead of a contactor. This is being considered for MV switchgear application feeding a 3000hp Gas Turbine Motor starter. Other than a contactors ability to withstand wear and tear what other pros are there to using a contactor in...
