why transmission line 11Kv OR 33KV,66Kv not in 10kv 20kv?
- 43 Answers
- 113737 Views
- A2Z Group, Baiji Power Plant Gas, Electrical, HCL, Kirloskar, Mepco, NEPC, OAMC, UNI, University of Lahore, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / shahulsnfa
everybody is copying from books and pasting here not even
one answer is practical..
| Is This Answer Correct ? | 10 Yes | 3 No |
Answer / parmar hitesh
because by some experiments it is proved that the harmonics
influence at this voltage is minimum. so it is selected as
the satandard voltage value and the another point is of ff
which is1.1
| Is This Answer Correct ? | 5 Yes | 1 No |
Answer / abhijeet
why not in transmission voltage we use 55 77 88
| Is This Answer Correct ? | 3 Yes | 0 No |
Answer / jayakrishnan
Because the transmission losses will be less in the below voltages as calculated,
11KV
33KV
110KV
230KV
And in 66KV
| Is This Answer Correct ? | 5 Yes | 2 No |
Answer / venkatesh
we use 11kv 33kv 66kv because form factor of sine wave is1.11 and transformer emf equation should also a reason
| Is This Answer Correct ? | 4 Yes | 1 No |
Answer / maheswara reddy modugula
Why transmission line 11KV OR 33KV, 66KV not in 10KV 20KV?
1•The miss concept is Line voltage is in multiple of 11 due to Form Factor. The form factor of an alternating current waveform (signal) is the ratio of the RMS (Root Mean Square) value to the average value (mathematical mean of absolute values of all points on the waveform). In case of a sinusoidal wave, the form factor is 1.11.
2.The Main reason is something historical. In olden days when the electricity becomes popular, the people had a misconception that in the transmission line there would be a voltage loss of around 10%. So in order to get 100 at the load point they started sending 110 from supply side. This is the reason. It has nothing to do with form factor (1.11).
3•Nowadays that thought has changed and we are using 400 V instead of 440 V, or 230 V instead of 220 V.
4•Also alternators are now available with terminal voltages from 10.5 kV to 15.5 kV so generation in multiples of 11 does not arise. Now a days when, we have voltage correction systems, power factor improving capacitors, which can boost/correct voltage to desired level, we are using the exact voltages like 400KV in spite of 444KV
| Is This Answer Correct ? | 3 Yes | 0 No |
Answer / subhash
As per our Indian standard it is derived from the form
factor I quite agrree to this answer because one question
arise why not 22,44,55,77..... & why 400 KV?
| Is This Answer Correct ? | 12 Yes | 10 No |
Answer / vinod
any one who say that it is due to form factor is incorrect ,
no such reason for this question, at starting addison
produce 110 v dc, and that production nature also follow in
ac system.
| Is This Answer Correct ? | 9 Yes | 7 No |
Answer / bigwoolleypenguin
The reason for these "odd" voltage figures dates back
years.The original idea was to make up for the voltage drop
in long transmission line conductors , hence 11KV was
designed to deliver 10 KV at the end of the line , 132 KV
was designed to deliver 130KV at the end of the line and so
on. It has nothing to do with form factor . Also this has
long been abandoned and nowadays the voltage supplied at
the end of the line should be the voltage stated plus or
minus a very small percentage. 400 KV voltage appeared
after this idea was abandoned , hence it is a " round "
figure . Otherwise it might have been 405 or 410 KV !
| Is This Answer Correct ? | 6 Yes | 4 No |
why shunt capacitor is connected
what u meant of power plant?
Why there is not any reactive power in DC although it causes magnetic field.
which transfofrmer oil break down voltage strength get will be more if oil sample taken from bottom of tank or oil sample taken from top of the transfomer tank.
Why dry type cast resin transformers tap link blast in HV side while power shut down times on load?
how much GROUND & NEUTRAL VOLT maintain in data center.
how much percentage set in transformer diffrencial relay
how many single tension hardware are required on a double circuit transmission tower?
What will be the fault current of any system when its generation is 10% of BASE generation( FUll Load )?Will is 10% or the same as full base calculation?
Is there possible to Test Transformer for Overfluxing Capability. Or is there any firm who does Overfluxing Test on Transformer?
From stability point of view,What(higher/lower) should be the value of inertia constant of rotating machines?
Different types of relay fault which phase sequence??
-
Civil Engineering (5085) - Mechanical Engineering (4451)
- Electrical Engineering (16632)
- Electronics Communications (3918)
- Chemical Engineering (1095)
- Aeronautical Engineering (239)
- Bio Engineering (96)
- Metallurgy (361)
- Industrial Engineering (259)
- Instrumentation (3014)
- Automobile Engineering (332)
- Mechatronics Engineering (97)
- Marine Engineering (124)
- Power Plant Engineering (172)
- Textile Engineering (575)
- Production Engineering (25)
- Satellite Systems Engineering (106)
- Engineering AllOther (1379)
