Mell How is voltage regulation calculated?
Load regulation (percent) = 100 x (voltage no load — voltage full load) divided by voltage full load. Line regulation is the amount of voltage variation from the output of a voltage regulator, or a transformer, that results from a change of voltage at the input of the voltage regulator or transformer.
What should be the permissible voltage regulation for 11kV 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%. Up to 33kV (-)9.0% to (+)6.0%.
What is voltage regulation in the distribution network?
From Wikipedia, the free encyclopedia. In electrical engineering, particularly power engineering, voltage regulation is a measure of change in the voltage magnitude between the sending and receiving end of a component, such as a transmission or distribution line.
What is the difference between 11kV and 33kV transmission line?
The 11kV lines are used in residential areas and is what feeds the local transformers, which then distributes power to the buildings in the area. 33kV lines on the other hand involve much higher voltages and are used to distribute power from one small sub-station to another.
What is maximum voltage regulation?
For Maximum Voltage Regulation, Thus we can say that, maximum Voltage Regulation occurs when load power factor is equal to leakage impedance angle.
Why do we calculate voltage regulation?
Voltage (load) regulation is to maintain a fixed voltage under different load. Voltage regulation is limiting factor to decide the size of either conductor or type of insulation. In circuit current need to be lower than this in order to keep the voltage drop within permissible values.
What is permissible voltage?
The permissible voltage drop in a lighting circuit is 2% of the supply voltage plus one volt. The maximum permissible voltage drop in a power industrial circuit should not be more than 5% of the declared supply voltage. The insulation resistance of any wiring installation should not be less than 1M Ω.
What is the importance of voltage regulation?
Significance of Voltage regulation It is necessary to maintain the supply voltage of the equipment supplied by the transformer. Because the supply voltage directly affects the performance of the equipment. Hence, the voltage regulation of the transformer is significant.
What is the current in 11kV line?
Take a 11kV/415v, 500KVA distribution system. Then maximum current on HV side = 500/{sqrt(3) * 11} = 26.24 A. maximum current on LV side = 500/{sqrt(3) * 0.415} = 695.6 A.
Why transmission is 11kV or 33kv 66kV?
But we already know that there are some voltage drop due to the resistance of the transmission lines. For this reason, they transmit 10% extra voltage. Sending Voltage = 10kV x 10% = 11kV. While the receiving end voltage are 10kV due to voltage drop.
How to calculate voltage regulation for an overhead line?
Voltage Regulation for 11KV, 33KV Overhead Line % Voltage Regulation = (1.06 x P x L x PF) / (LDF x RC x DF) Where: P – Total Power… What are the limitations of Energy Audit ?
Why is output voltage 11kV 22kV 33kV?
Due to the form factor=1.11, so output voltage must be multiply of form factor, so we get 11,22,33. First let us define form factor before we go into the question:
How to calculate% voltage regulation of small distribution line?
plz write the formula of above calculated % VR , as per excel sheet it doesn’t get clearly. VD = I (r cosØ + x sinØ) where r and x are characteristics of the conductor. Ø PF angle. I amps I want to design overhead line 22 k.v.how to desgin.
What are the voltage limits for 33 kV feeders?
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%.