What gets hurt most in an asynchronous closure? The circuit breaker that closes, the generator, or some other component?
We're talking about low voltage synchronous generators of about 1MW size, and 11kV circuit breakers.
I saw a photo once of a power station turbine following an async closure - it was more of a turbine-shaped hole in the floor. But that was a big machine. Is it different for little 'uns?
2006-06-22 23:55:19 · 3 answers · asked by wild_eep 6 in Science & Mathematics ➔ Engineering
If sized and rated correctly the circuit breaker and associated protection should open to prevent damage to either the generator or the electrical network. However in the real world I have seen damage to all parts of the generation sytem following an async closure. Catastrophic failure of the generator leaving a hole in the floor? - the safety equipment must have failed too, leaving the generator connected for far too long.
2006-06-23 00:47:40 · answer #1 · answered by rp804110 3 · 2⤊ 0⤋
I was told that the generators will try to jump off of the deck! The generator's speeds will change with sudden changes in load and operation will be highly unstable. When operating synchronously, increasing the speed of one machine (increase throttled steam?) will unload the other machine due to a characteristic known as droop.
2006-06-23 10:55:36 · answer #2 · answered by Kes 7 · 0⤊ 0⤋
Parambiotic diplexers with a double pole underthrusher is painful enough, running flat out at its positively unbearable. Hope this helps!
2006-06-23 07:15:49 · answer #3 · answered by Captain Eyewash 5 · 0⤊ 0⤋