What is the formula of voltage regulation?

Voltage regulators are devices that are used to keep the voltage constant under varying load conditions. Load regulation (percent) = 100 x (voltage no load — voltage full load) divided by voltage full load. Line regulation is another measure of voltage regulation.

How do you find the voltage regulation of a transmission line?

Voltage regulation is usually expressed as a percentage:

1. At no load, the sending-end voltage and receiving-end voltage are equal ❲VS=VR ❳.
2. whereVNLis the receiving-end voltage at no-load, and VFLis the receiving-end voltage at full-load.
3. where IR and IS represent the receiving-end and sending-end currents respectively.

How is LT voltage regulation calculated?

Total KVA load on the feeder = 1552 KVA. Length of the trunk line = 3.2 Km. Tail end voltage of the feeder, Er = 10.797 KV. \%Voltage Regulation = (Es – Er) x 100 = (11 – 10.797) x 100 = 1.85 \%.

How do you find the regulation constant?

RC= Regulation Constant (KVA-KM) per 1\% drop. RC=(KVxKVx10)/( RCosΦ+XSinΦ) LDF= Load Distribution Factor. LDF= 2 for uniformly distributed Load on Feeder.

How do you calculate voltage regulation of an alternator?

the voltage regulation of an alternator is defined as the change in its terminal voltage when full load is removed, keeping field excitation and speed constant, divided by the rated terminal voltage.

How do you calculate voltage regulation of a transformer?

So for example, if a single-phase transformer has an open-circuit no-load terminal voltage of 100 volts and the same terminal voltage drops to 95 volts on the application of a connected load, the transformers voltage regulation would therefore be 0.05 or 5\%, ((100 – 95)/100)*100\%).

What is line regulation and its formula?

The value is calculated from the ratio of the change in the output voltage to the change in the input voltage, but usually expressed as a percentage: Line Regulation = ΔVo/ΔVi. It is often desirable for a power supply to maintain a stable output regardless of changes in the input voltage, load or connected device.

What is 33kV transmission line?

33kV to 11kV transformers steps down the the voltage to a safe level, which is then distributed via 11kV feeders to homes and businesses. 33kV lines on the other hand involve much higher voltages and are used to distribute power from one small sub-station to another.

How do you calculate voltage regulation on a 22kV line?

Voltage Regulation for 11KV, 22KV, 33KV Overhead Line. \% Voltage Regulation = (1.06 x P x L x PF) / (LDF x RC x DF) Where: P – Total Power in KVA. L – Total Length of Line from Power Sending to Power Receiving in KM.

How do you calculate phase voltage from 33kV?

Phase voltage is obtained by dividing 33kV by 1.732 . 1.732 (Route 3) times of the Phase voltage (Single wire). Ratings of transmission lines are given in terms of line voltages.

Why do power lines go from 132kV to 33kV?

Another reason is there are consumers for the mid range voltage levels such as 132kV, 66kV. SO when you have to reduce to cater those consumers, it is economical to draw lines from that voltage level and step down to 33kV. Plus the transmission towers and other costs reduce.

What is the voltage regulation for a 33kV feeder?

Voltage Regulation Values. The voltage variations in 33 kV and 11kV feeders should not exceed the following limits at the farthest end under peak load conditions and normal system operation regime. Above 33kV (-) 12.5\% to (+) 10\%.