GATE EE 2014 Set 2 — Question 51
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Power Systems → Economic Operation & Compensation → Load Frequency Control
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Question
There are two generators in a power system. No-load frequencies of the generators are Hz and Hz, respectively, and both are having droop constant of Hz/MW. Total load in the system is MW. Assuming that the generators are operating under their respective droop characteristics, the frequency of the power system in Hz in the steady state is ___________.
Correct answer
49.9 to 50.1
Solution
The droop characteristic of a generator is given by the equation:where:
- is the system frequency in Hz
- is the no-load frequency in Hz
- is the droop constant in Hz/MW
- is the power output in MW
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