Genaration and Transmission

The Plant Load factor is very difficult to predict - We have plants with Load factors as high as 90+ to the ones with PLF less that 60%

It all depends on the plant machinery reliability, maintainability, conditi, load pattern (whether the energy generated can be evacuated) etc.

PLF is calculated over a time period (monthly, annual etc) and are not instantaneous. No thumb rule for this.

Other part is -

generated units = 1000 x 24 x MW x PLF x no of days(PLF calc duration) units.

For transmission - KVA

Take average PF = 0.8 and you get

1MW/0.8 MVA = 1.25 MVA

- you have to design the transmission line on full capacity and not on PLFs

the KV is for you to decide based on the grid voltage, and other economics, lower voltage = more line loss, more copper in lines.

Higher Voltage = More transformer (step up, step down) and insulation costs

Thumb rule may not apply. But all designs is on the generation capacity and not on PLF. We design the generation capacity on PLF so that customer get un interrupted supply.

Thanks Sb for the valuable inputs. It's a great help.

Regards