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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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    A 3 phase instant or near instant water heater is a common sight in a German kitchen or bathroom,designed for 16A per phase, so all the cable is the same as the normal socket circuits.- internally not much different to your UK shower heaters with multiple elements, just more than one phase present.  PSSC can then be quite a bit lower than we would have on a100A supply.

    Compare this approach with the worries about 3 phases in the same room in another recent post ; -) Those of us who have worked abroad at some point are much less worried by low power 3 phase- like the bathroom sockets it seems to be a UK only fear.
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    A 3 phase instant or near instant water heater is a common sight in a German kitchen or bathroom,designed for 16A per phase, so all the cable is the same as the normal socket circuits.- internally not much different to your UK shower heaters with multiple elements, just more than one phase present.  PSSC can then be quite a bit lower than we would have on a100A supply.

    Compare this approach with the worries about 3 phases in the same room in another recent post ; -) Those of us who have worked abroad at some point are much less worried by low power 3 phase- like the bathroom sockets it seems to be a UK only fear.
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