GATE EE 2022 Set 1 — Question 56
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Electrical Machines → Economic Operation & Compensation → Load Frequency Control
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Question
Two generating units rated for and have governor speed regulations of and , respectively, from no load to full load. Both the generating units are operating in parallel to share a load of . Assuming free governor action, the load shared in MW, by the generating unit is _________. (round off to nearest integer)
Correct answer
188 to 192
Solution
The load sharing between two units is inversely proportional to their regulation constants expressed in MW/Hz.
Let and .
, .
The change in power for a change in frequency is:
Total load shared .
Load shared by the unit:
.
Let and .
, .
The change in power for a change in frequency is:
Total load shared .
Load shared by the unit:
.
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