HVDC Back-to-Back System Configuration: Explained

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The HVDC back-to-back system connects two AC systems directly without a transmission line, resembling two events occurring consecutively, hence the term "back to back." This configuration features two converters located at the same site, facilitating the transfer of power between the two AC systems. The analogy of "two games back to back" highlights the immediate connection between the systems. The discussion seeks clarification on the similarities between the diagram and the described configuration. Understanding this concept is crucial for grasping the operational mechanics of HVDC systems.
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The above diagram is for HVDC back to back system. My question is why do we call it back to back system?

Could someone please help me here?
 

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It's a sports metaphor - like two games, back to back.

In this case it is because you see an AC system connected at one end, and another at the other end: back to back.
 
UltrafastPED said:
like two games, back to back.
Could you please explain it? I am guessing "the two games happening immediately one after another. Correct?"
 
The simplest configuration is the back-to-back interconnection in which two converters are on the
same site without a transmission line.

Could someone please indicate the similarity between the bold part of the above sentence and the HVDC back-to-back system diagram above?
 

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