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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
    The simplest way of reducing cable losses is often to use larger cable, rather than a complex layout that may introduce other costs.

    In most cases cables should be under the footpath beside a public road, avoiding the costs and complications of wayleaves will more than pay for larger cables.

    Doubling the cable size will less than double the cable cost, and the trench will cost the same.


    Loop mains that are fed from each end will reduce losses, and may permit of feeding from one end only during faults.


    Also it may be more economic to locate the substation near an EXISTING HV circuit, preferably a ring circuit, rather than to install significant HV cable.
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  • 0
    The simplest way of reducing cable losses is often to use larger cable, rather than a complex layout that may introduce other costs.

    In most cases cables should be under the footpath beside a public road, avoiding the costs and complications of wayleaves will more than pay for larger cables.

    Doubling the cable size will less than double the cable cost, and the trench will cost the same.


    Loop mains that are fed from each end will reduce losses, and may permit of feeding from one end only during faults.


    Also it may be more economic to locate the substation near an EXISTING HV circuit, preferably a ring circuit, rather than to install significant HV cable.
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