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How do you define the synchronous generator capability limiters?
Wiki User
∙ 12y ago
1.MVA or armature current limit of generator: this depends on the cooling system of generator so that temperature rise in generator is limited to safe value.depending on cooling system effectiveness and temperature limit for the insulation used in generator, MVA limit is decided.
2.MW limit: this is determined by the power output capacity of prime mover to which generator is connected.
3.rotor angle limit: this is related to stability of generator which is synchronised to the grid.ideally this could be 90 degree, but in practice this is limited to70 degree so as to have better stability margin in transient and dynamic condition.the generator falls out of synchronism in trasient condition if rotor angle is close to 90 degree.
4. rotor current limit: the field winding placed on rotor has got limited current carrying capacity, beyond which it may burn .so this limit is used.
all these limitters make capability curve of g generator within which the generators operates safely
r. k.niranjan
Wiki User
∙ 12y ago
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