why we not using 230kv directly why we are stepping down and
then stepping up
- 2 Answers
- 4286 Views
- Siemens, I also Faced
- E-Mail Answers
Answer Posted / s.ravikumar
NORMALLY THE GENERATING VOLTAGE AT ANY POWER STATION IS 11KV.
THEN THE VOLTAGE(11 KV) HAS BEEN STEPPED UP TO 33KV,110KV,230KV OR 400KV.
THE REASON FOR STEP UP IS TO AVOID THE LINE LOSSES DURING TRANSMISSION AND DISTRIBUTION FROM GENERATING STATION TO THE SUPPLIER END(GENERALLY LONG DISTANCE).
ACCORDING TO THE LOAD AT SUPPLIER END THE RANGE OF VOLTAGE VARIES.
EXAMPLE:
SOME OF THE HOUSE HOLD ITEMS ARE 230V(SINGLE PHASE) RANGE:
1.TV
2.IRON BOX
3.FAN,ETC.
AND SOME OF THE HOUSE HOLD ITEMS ARE 430V(3 PHASE) RANGE:
1.3 PHASE MOTORS
SO IT IS CLEAR THAT EACH ITEM HAS SEPERATE VOLTAGE CLASS.SO WE CANNOT GIVE 230KV TO A 230V ITEM(IT DAMAGES THE INSULATION OF EQUIPMENT AND IF NO INSULATION THEN THE USER WILL SURELY GET DEATH).
,HENCE THE GENERATED 11KV IS STEP UP TO ANY OF VOLTAGE RANGES 33KV,110KV,230KV OR 400KV AND IF REQUIRED THE THAT SAME CAN BE STEP DOWN BY TRANSFORMERS LIKE:
1.400KV/11KV
2.230KV/11KV
3.110KV/11KV
AND 11KV/440V
NOTE:IF THE VOLTAGE LEVEL IS HIGH,THEN THAT MUCH OF INSULATION,GROUND CLEACRENCE HAS TO BE MAINTAINED.
| Is This Answer Correct ? | 2 Yes | 0 No |
Post New Answer View All Answers
Define the term Capacitance and Inductance?
Can any one provide the inspection procedure of MIMIC for VFD panel? Details: If someone wants to have a mimic in the VFD panel what are inputs considered for the mimic(like on,off,trip) whether we are able to add speed variation in the mimic(if so how can we get) and what are the parameters to be checked in the MIMIC during inspection?
What is the purpose of stablization resistor in high impedance bus bar protection
What is excitation in case of dc motor?
What are the types of excitation system?
Write the force balance equation of m ideal mass element.
sir please send me techinical questions for junior engineer posting in bangalore railway i am diploma holder
neutral earth resistance testing is it possible for transformer while in load condition
do we use neutral grounding for resistive balanced load? if we use what happen?
advantage and disadvantage of team work?
what is the value of combined earthing in general electrical circiut?
how the CT and PT is connected in the circuit during testing of transformer explain with diagram
Which cable is use for rtcc control panel
What is the numerical quantity of sqcm?
what is the difference between pvc & fiber glass cables
