Power factor doesn't necessarily 'improve with the load', but it is determined by the load.
Power factor can be unity. If the load is purely resistive, then the load current and supply voltage are in phase, and the load will have unity power factor.
Divide Power Load by "Power Factor"
That's not possible. The power factor is related to the phase difference between voltage and current on the line. "No load" means 'no current', so power factor is meaningless with no load. If you see a power factor, there must be a load, even if it's some device that you're not aware of.
Diesel Engine has high load factor
There is no disadvantage of unity power factor, because at unity power factor all the electrical power is efficiently utilized by the the load, and at lagging power factor some power is lost in the load's magneticfield.
Power factor is determined by the nature (resistive, inductive, capacitive) of a load, not whether it is a low load or a high load.
load factor is the ratio of average load to max demand for a given period.High load factor meansless cost per KWHmore efficient use of power plant
at lower power factor current drawn by load is high and at higher pf the current drawn is less...
It's easier to answer you question the other way around, that is "Why does the load current fall with an increase in power factor?"Before power-factor improvement, the load current is the phasor (or vector) sum of the load's resistive (IR) and inductive currents (IL).Power-factor improvement is achieved by adding a capacitor in parallel to the load so, after power-factor improvement, the load current becomes the phasor sum of the resistive current (IR), inductive current (IL), and the capacitive current (IC).Since the inductive current and capacitive current are displaced from each other by 180 degrees (i.e. are in antiphase), the the phasor sum of IR + IL +IC will be smaller than the phasor sum of just IR and IL.Hence, the supply current reduces as the power factor improves.
No Load factor is average power consumption rate divided by peak power consumption rate over a period of time. Power companies like customers who have very steady consumption rates ......Load factors approaching 1 Power factor is true power / apparent power (kW/kV.A) and is a measure of how efficiently a customer's load consumes power. Certain types of electrical loads consume power more efficiently ( resistive element heating ) and they have a Power factor approaching 1. Other types of load such as old inductions motor are quite wasteful consumers of power and the utility has to provide more current ( amperage ) for the load to convert to real power
0. Power factor has to do with the amount of real power. if you have a purely capacitive load, there is no real power flow, thus pf = 0. For purely resistive load, power factor will be 1.0.
With varying power factor the load current drawn changes, which in turn affects the voltage regulation