The power flow control strategy that is typically used in Series MTDC systems is
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Answer & Explanation
Correct AnswerB. to set current by one of the converter stations and is kept common for all the converter stations.
Quick Explanation
Because all terminals in a series MTDC link carry the same DC current, the natural coordinated strategy is to control a common current and regulate each terminal power through its DC voltage. The strategy described in option B is therefore used for series MTDC operation.
Formula / Key Relation
Pi=Vi Id with common Id in a series MTDC link
Detailed Explanation
Correct Answer
B — to set current by one of the converter stations and is kept common for all the converter stations.
Concept and Reasoning
Because all terminals in a series MTDC link carry the same DC current, the natural coordinated strategy is to control a common current and regulate each terminal power through its DC voltage. The strategy described in option B is therefore used for series MTDC operation.
Calculation / Key Relation
Pi=Vi Id with common Id in a series MTDC link
Exam Takeaway
Series MTDC: one common current, terminal voltage sets terminal power.
Common Mistake
Do not apply the parallel-MTDC common-voltage control concept to a series link.
Quick Trick
Series MTDC: one common current, terminal voltage sets terminal power.
Common Mistake
Do not apply the parallel-MTDC common-voltage control concept to a series link.
Exam Tip
Series MTDC: one common current, terminal voltage sets terminal power.
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