The main objective of load frequency control is to regulate
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Answer & Explanation
Correct AnswerB. Frequency and real power exchange
Quick Explanation
In an interconnected system, load-frequency control maintains system frequency near nominal and regulates scheduled real-power interchange over tie lines between control areas. Reactive power and bus voltage are primarily handled by excitation/voltage control. Therefore option B.
Formula / Key Relation
ACE combines frequency deviation and tie-line real-power error
Detailed Explanation
Correct Answer
B — Frequency and real power exchange
Concept and Reasoning
In an interconnected system, load-frequency control maintains system frequency near nominal and regulates scheduled real-power interchange over tie lines between control areas. Reactive power and bus voltage are primarily handled by excitation/voltage control. Therefore option B.
Calculation / Key Relation
ACE combines frequency deviation and tie-line real-power error
Exam Takeaway
LFC/AGC controls frequency + real-power interchange.
Common Mistake
Do not include reactive-power exchange as the main objective of load-frequency control.
Quick Trick
LFC/AGC controls frequency + real-power interchange.
Common Mistake
Do not include reactive-power exchange as the main objective of load-frequency control.
Exam Tip
LFC/AGC controls frequency + real-power interchange.
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