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Theoretically optimal location of a distribution substation

Former Community Member
Former Community Member
Hello, 
I have the following problem with the preliminary design stage of a residential area:

The software I use can calculate a theoretically optimal location of a distribution substation for low-voltage networks. This place is calculated as a "center of power demand" or "center of gravity" of electrical consumers.

If the substation locates in this optimal place, we can design 0.4kV distribution feeders with a minimum length and power losses in low-voltage feeders are minimal. 

I understand it’s almost impossible to put it exactly there, and I consider some sites nearby. But the architect believes that this is unacceptable in terms of landscape design and wants to place the substation in a far corner.

Who should be the arbiter in this situation?  DNO representative takes a neutral position.  Local authorities are completely on architect side, they do not care that long power cables will heat the atmosphere for many years to come.

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  • 0
    I agree with OMS - 3x32A seems to be a pretty standard Teutonic setup (the Gallic tendencies seem to be moving towards 1x40A).


    Cookers/hobs etc will be 2- or 3-phase - so draw relatively low currents per phase; larger single phase appliances (washing machines, tumble dryers etc) will typically be on their own individual circuits back to the DB, so relatively easy to balance and as a result the likes of a general kitchen socket circuit will be modestly loaded. Their electricians will be perfectly used to working within the constraints of their system.


        - Andy.
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  • 0
    I agree with OMS - 3x32A seems to be a pretty standard Teutonic setup (the Gallic tendencies seem to be moving towards 1x40A).


    Cookers/hobs etc will be 2- or 3-phase - so draw relatively low currents per phase; larger single phase appliances (washing machines, tumble dryers etc) will typically be on their own individual circuits back to the DB, so relatively easy to balance and as a result the likes of a general kitchen socket circuit will be modestly loaded. Their electricians will be perfectly used to working within the constraints of their system.


        - Andy.
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