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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
    Alex

    I wanted to compare the cost of electricity losses in low-voltage feeders but not the cost of cables. Over 30-40 years of operation there will be a large amount of costs for power losses.  Of course, the end consumer pays for everything. But if the DNO would get shorter cables with less power losses, then they could take the saved money to himself.


    You cant evaluate cost without looking at cable size though - even in your theoretical optimum layout, a larger cable (ie more expensive) will consume less power.


    It's an economic balance - will the increased cable size pay for itself in a given period (accounting for interest on money etc etc)


    Regards


    OMS


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  • Former Community Member
    0 Former Community Member
    Alex

    I wanted to compare the cost of electricity losses in low-voltage feeders but not the cost of cables. Over 30-40 years of operation there will be a large amount of costs for power losses.  Of course, the end consumer pays for everything. But if the DNO would get shorter cables with less power losses, then they could take the saved money to himself.


    You cant evaluate cost without looking at cable size though - even in your theoretical optimum layout, a larger cable (ie more expensive) will consume less power.


    It's an economic balance - will the increased cable size pay for itself in a given period (accounting for interest on money etc etc)


    Regards


    OMS


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