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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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  • Former Community Member
    0 Former Community Member
    OMS:

    Are you sure ? - given you only have circa 9 properties per phase, and gas heated buildings, I would have thought the feeders would be much smaller than 240mm2  - even in aluminium.

     



    Hi, OMS

    Of course, I'm not sure.  As I wrote earlier there are plans to build big houses of 2-3 floors. The main fuse calculator we use gets the following results for residential buildings in the projected area:


    Type of place of consumption:  Detached house
    Area:  200 m2
    Loads: Electric sauna heater + Oven + Electric stove + Washing machine + Dishwasher + Other kitchen appliances + Other household appliances + Lighting + Home electronics + Air conditioning + Garage appliances + Outdoor appliances.

    Number of phases: 3
    Suggested main fuse rating:  3x32A

    Amperage of the main fuse is calculated is a recommended value, the calculator considers the consumption habits of an average household.  Some houses may have pools. May be really Al 4x300mm2 cables should be used.


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  • Former Community Member
    0 Former Community Member
    OMS:

    Are you sure ? - given you only have circa 9 properties per phase, and gas heated buildings, I would have thought the feeders would be much smaller than 240mm2  - even in aluminium.

     



    Hi, OMS

    Of course, I'm not sure.  As I wrote earlier there are plans to build big houses of 2-3 floors. The main fuse calculator we use gets the following results for residential buildings in the projected area:


    Type of place of consumption:  Detached house
    Area:  200 m2
    Loads: Electric sauna heater + Oven + Electric stove + Washing machine + Dishwasher + Other kitchen appliances + Other household appliances + Lighting + Home electronics + Air conditioning + Garage appliances + Outdoor appliances.

    Number of phases: 3
    Suggested main fuse rating:  3x32A

    Amperage of the main fuse is calculated is a recommended value, the calculator considers the consumption habits of an average household.  Some houses may have pools. May be really Al 4x300mm2 cables should be used.


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