GATE EE 2017 Set 2 — Question 53
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Power Systems → Economic Operation & Compensation → Load Frequency Control
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Question
Two generating units rated 300 MW and 400 MW have governor speed regulation of 6% and 4% respectively from no load to full load. Both the generating units are operating in parallel to share a load of 600 MW. Assuming free governor action, the load shared by the larger unit is _______ MW.
Correct answer
395 to 405
Solution
Let and .
Let and .
Total load .The change in frequency is the same for both units:
Also,
The larger unit is the 400 MW unit, and it shares 400 MW.
Let and .
Total load .The change in frequency is the same for both units:
Also,
The larger unit is the 400 MW unit, and it shares 400 MW.
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