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Why are Power Grids so Large?

Former Community Member
Former Community Member
Why are power systems so large and interconnected? For example, what technical obstacles prevents the US eastern interconnection from being 8 isolated islands? Why not separate them by ISO/RTO? Why does every power grid in the world strive to be as large as geography allows?


Better yet why not have scattered power plants about (with redundancies of course) feeding load radially? A lot simpler and a lot less to go wrong.

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    AJJewsbury:

    . . . the most efficient arrangement was 3-phases . . . 




    Three phases is the minimum number to define direction of rotation. It was also efficient to wind round a shaft for generation to give a smooth mechanical load. 


    Regards,


    Alan. 

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    AJJewsbury:

    . . . the most efficient arrangement was 3-phases . . . 




    Three phases is the minimum number to define direction of rotation. It was also efficient to wind round a shaft for generation to give a smooth mechanical load. 


    Regards,


    Alan. 

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