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.

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.

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.