Voltage drop compensation 1

[Maryhg]

Hi there,
I have to design a 11kV voltage drop compesator to balance 3 loads in a circuit.
Previously, I had calculated very easily this problem because I had only 2 loads so I used voltage divider rule to obtain the balance point so the 2 loads were in an equilibrium however, now the company want to add a 3rd load 3km away from the transformer and they asked me where is the balance point to install the voltage drop compensator. I know the lengths of 3 cables and the loads so I have tried to calculate mathematically the equilibrium distance between them with no luck because I dont know the angle and the voltage phase is independent to the physical angle between the loads and transformer locations (see attached notes). Please, couls you send me examples or explain how can I obtain this balance point. I need help urgently!

 

[7anoter4]

I think, at first, actually the load is supplied through a transformer-primary 11 kV but secondary it is a low voltage [400-690 V].
Second, what do you need it is the voltage drop -I think. It is a very simply task for an electrical engineer.
What I would I have to recommend is don't do it alone but go to find a good electrical engineer to do the job.
In my opinion you intend to employ a device like the following:

https://library.e.abb.com/public/3e...052ed76/2GCS303011B0060- Dynacomp Pamphet.pdf

 

[waross]

First resolve the current drawn by each load into real components and reactive components.
Add the real components and the reactive components to get the total real current and total reactive current on the transformer.
Use this value to calculate the voltage drop on the transformer terminals.
Now use calculate the voltage drop on each feeder, and the voltage supplied to each load.
Take the average of the load voltages and compare with the desired voltage.
Adjust the supply voltage to get a happy medium.
Re-check your figures.
Note, it is not always possible to determine a suitable operating point when faced with one control of the voltages across three different voltage drops.
Your problem may not be solvable with one voltage regulator.
That is, you may end up with a voltage that is higher than desired at one load while the voltage is lower than desired at another load.

Bill
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"Why not the best?"
Jimmy Carter