Voltage Regulation

Variations on the load, among others

Yahlasit

Changes in loading, changes in source voltages, reflections, thermal variations in transmission line dynamics, poor engineering, excellent engineering, lightening coupling and the perennial wiring corrosions. All of these can and will cause voltage variations to occur in a distribution station outside of the voltage changes that occur from just running a simple sinusoidal waveform. Many of these variations will provide tell tale signs that will help to identify what is the source of the variation. Many of these sources will produce similar results and be difficult to discern what was the source.

But if you have to ask this question here, you are not qualified to be anywhere inside a distribution station perimeter fence, GET OUT before you hurt somebody.

The OP is definitely not qualified to be inside it to be sure _{at least as on now}.

The questions reeks of homework.

The typical distribution system is an alternating current system, so the voltage is continuously varying by definition.

Other than that, the number of possible factors is roughly infinite.

Have FUN!
TT3

pl. elaborate TT3

Please explain what you wish Tubotroll3 should elaborate on. Do you wish an explanation that an alternating current system not only constantly varies the voltage but is very easy to change the range of this constantly varying voltage. Maybe you need a precise value for the term infinite. If you explain your misunderstanding in complete words you will likely get a pertinent answer to your question.

Dear Harry,

This is a question that smells of either gross ignorance of the field, a homework problem or a troll.

I know which I am Harry, do you know which you are? ;)

The number of factors that can influence the voltage on a distribution system starts with:

The addition and/or subtraction of any or all of the loads and sources on the system. Each load and source will cause a variation related to the magnitude of the load and whether it is added or subtracted to or from the system.

The resistance, impedance and frequency of the source, conductors, transformers and switching elements and the loads.

The temperature of the various elements causes changes in the above so temperatures of each element must be considered.

Wind slapping the wires together causes serious disturbances.

Trees touching the wires causes disturbances.

Solar storms including CMEs (Coronal Mass Ejection) and lightning can cause disturbances on power grids.

Even California Condors, vultures and eagles cause disturbances, though usually only one per bird.

These are just a few natural effects.

Many man made phenomenon like electromagnetic pulse and radio transmitters of various sorts can affect the voltage and current on distribution systems.

The preceding was a tiny sample of the issues.

Have FUN!

TT3