Generator parallel with mains
Generator parallel with mains
(OP)
Just as a matter of interest what effects might there be when a 1000Kva 400v 3phase generator is paralleled with the main supply without being synchronised?
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Generator parallel with mains
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RE: Generator parallel with mains
Assuming that by paralleled, you mean that the generator is supplying the same loads as the main supply, the instant the generator is closed to supply load, you're going to see some nasty transient currents and voltages throughout your system, not to mention some pretty good stresses on your generator. In all likelihood, if you have any kind of protective relaying on the generator, the generator won't be online long after its closed to supply your loads. Protective devices on your main supply may trip as well.
All of this depends on how out-of-synch your generator happens to be with the main supply -- if the frequency, phase, and voltage of the generator and main supply just happen to be close enough (and they have the same phase sequence), the generator will synchronize with the main supply. As for your chances of this actually happening through blind luck.... not good.
RE: Generator parallel with mains
RE: Generator parallel with mains
RE: Generator parallel with mains
RE: Generator parallel with mains
RE: Generator parallel with mains
Asking such a type (?) of question in any of the mechanical engineering forums would have been a blind error for, you get answers like go back and read the fundamentals or why can't you consult a professional nearer to you sort. I liked you guys patience and explanation without any pun. As I always think to be a succesful electrical engineer one has to be very patient.
Keep it up.
Regards,
Truth: Even the hardest of the problems will have atleast one simple solution. Mine may not be one.
RE: Generator parallel with mains
Come on Quark!! I have no objection to your implication that my question was fundamental. Of course it was. But why do you think all the good buddies out there use handles? The malaise within engineering in general is a distinct inability to admit that you are not as expert as you would like others to think you are. These forums provide a wonderful opportunity to bare your soul without being scoffed at! Although, I am bound to say that LyleDunn is my real name. As a law graduate, I was late to electrical engineering, but it did teach me to ask fundamental questions without getting a red face! Sometimes even the most knowlegable lecturers found great difficulty in answering my "fundamental" type questions.
I also thank the electrical guys out there who take the time and trouble to respond.
Regards,
Lyledunn
RE: Generator parallel with mains
As far as the handles are concerned I totally disagree with you. For example my handle 'Quark' is my obsession with quantum physics. (It will also allow me entering eng-tips.com without anybody's knowledge during working hours
Note: I am sorry if I offended you unknowingly.
Regards,
Truth: Even the hardest of the problems will have atleast one simple solution. Mine may not be one.