Question 1 of 270705eccefa4bacbc34ba4d48186

Two AC generators of the same capacity are operating in parallel. One with a zero-speed droop setting and the other with a 5% speed droop. If its capacity is not exceeded, what will be the characteristic of the unit whose governor has the zero-speed droop setting?

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Question 1 of 27070
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Two AC generators of the same capacity are operating in parallel. One with a zero-speed droop setting and the other with a 5% speed droop. If its capacity is not exceeded, what will be the characteristic of the unit whose governor has the zero-speed droop setting?

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šŸ” Key Concepts

ā€¢ speed droop in generator governors and how it affects load sharing ā€¢ difference between a zero-droop (isochronous) governor and a governor with 5% speed droop ā€¢ relationship between frequency control and load sharing when two generators operate in parallel

šŸ’­ Think About

ā€¢ Ask yourself: if one governor has zero droop (isochronous) and the other has 5% droop, which unit will react more strongly to small frequency changes? ā€¢ Consider: in parallel operation, which unit primarily controls system frequency, and which one tends to adjust its power output more flexibly with load changes? ā€¢ Think about how a perfectly flat (zero-droop) speedā€“load curve compares to a sloping (5% droop) curve when system load increases or decreases.

āœ… Before You Answer

ā€¢ Verify what zero-speed droop (isochronous) actually means for speed vs. load characteristics of the governor ā€¢ Check which type of governor characteristic is normally used for main frequency control versus sharing load with other machines ā€¢ Confirm whether a unit with zero droop tends to take more, less, or the same share of load compared with a unit having positive droop, assuming both are same capacity and correctly adjusted