Connecting Generators in a Single Bay
Connecting Generators in a Single Bay
(OP)
Our existing generation is connected to a main 115 kV swithcyard (1 1/2 breaker scheme). The same 115 kV switchyard is connected to 2-ITT upstream to 380 KV switchyard (1 1/2 breaker) where 2 inter-tie line connects our system to a much bigger system.
We are planning to put up an expansion through 500MW new generating plants to be connected to the 380 KV switchyard by installation of a single additional bay. The new plant shall be compose of 2x250 MW units and was initially intended to be connected to the two points from the additional bay.
I know that preferably it should be connected on different section of the 1 1/2 breaker and thus requires 2 additional bays. However, to limit the cost, it was proposed that way. Is there a siginificant effect on the reliability of the resulting set-up?
We are planning to put up an expansion through 500MW new generating plants to be connected to the 380 KV switchyard by installation of a single additional bay. The new plant shall be compose of 2x250 MW units and was initially intended to be connected to the two points from the additional bay.
I know that preferably it should be connected on different section of the 1 1/2 breaker and thus requires 2 additional bays. However, to limit the cost, it was proposed that way. Is there a siginificant effect on the reliability of the resulting set-up?






RE: Connecting Generators in a Single Bay
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If we learn from our mistakes I'm getting a great education!
RE: Connecting Generators in a Single Bay
But that set-up was already ruled out.
Most of our existing GTGs rated 60MW are having that kind of set-up and is connected to the 115 kV bus.
However, since these units are relatively bigger, it is to be connected individually to the 380 kV bus. But economics have it that only 1 additional bay is to be constructed to connect the 2-units. My questions is, will there be significant impact in terms of reliability say compared if we built 2 bays and connect each unit to the opposite sides (upper & lower or left & right) of the breaker and a half system?
RE: Connecting Generators in a Single Bay
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If we learn from our mistakes I'm getting a great education!
RE: Connecting Generators in a Single Bay