Double Circuit Transmission Line refers to the arrangement in which a total of six conductors are provided to make two different Transmission Circuit. In Double Circuit Transmission Line, there are two circuits each consisting of three conductors corresponding to three phases. Both the circuits in Double Circuit Transmission Line are mounted or run through the same Transmission Line. In Double Circuit Transmission Line, bundle conductors are mostly used.
https://electricalbaba.com/single-circuit-and-double-circuit...

DCDS stands for Double-Circuit, Double Stringing. It means that the transmission line towers have the capability of a double circuit by design and both circuits have been commissioned.
https://www.quora.com/What-is-the-difference-between-a-LILO-...

Ambos circuitos están instalados y disponibles a pesar que solo uno es usado en el momento.

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Note added at 5 days (2019-10-23 20:27:40 GMT) Post-grading
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