A group of machines (wind turbines) connected with 33KV feeder and each machine

A group of machines (wind turbines) connected with 33KV
feeder and each machines are having individual VCB. The 33KV
feeder connected with 110KV/33KV substation. The 33KV feeder
tripped by over current at Substation and fault recorded at
Substation as OC-R&Y phase. Same time the group of machines
VCB tripped by over voltage, the fault recorded voltage was
above 66KV by numerical Under/Over voltage relay. While grid
drop time, this much of voltage hike is possible?

Question Posted / apnesan

1 Answers
3326 Views
I also Faced
E-Mail Answers

A group of machines (wind turbines) connected with 33KV feeder and each machines are having individ..

Answer / k.prakashchandra

The load throw-off may result in run-away speed being equal
to twice the normal speed ,hence the voltage may also become
twice. Over voltage relay should be set at not more than
120%.You can employ the AVR so that the voltage does not
increase with the speed.

Is This Answer Correct ?

1 Yes

0 No

Post New Answer

More Electrical Engineering Interview Questions

what is the most permissible winding temp when we conducting a generator load test?(condition no load)

0 Answers

what is the work of trip circuit supervision relay?

2 Answers Volkswagen,

why link is provided in neutral of an ac circuit and fuse in phase of ac circuit?

4 Answers

if a motor is running at 1500rpm then how you can find its HP

1 Answers Construction,

How can make a star delta with Rstar delta feeder ( ( 4contactor & one timer ) pls answer with digram (power &control digram)

1 Answers

WHAT WILL BE THE SPEED OF MOTOR IF NO.OF POLES ON STATOR ARE NOT EQUAL TO NO. OF POLES ON ROTOR.???

4 Answers

what is circulating current in parallel transformer???plus how it is generated ???plz explain in detail.........

2 Answers

What are the minimum acceptable insulation resistances of insulation of underground cable suitable for 0.440kV,11kV, 33kV and 66kV?

2 Answers

What is transformer tap changers please explain

3 Answers Feedback Venture, Sail,

Why in KVA diesel engine? Why not KW

3 Answers

What is ELR, and where it is used ?

7 Answers KSEB,

You required 5A from the transformer but you get 8A. How do you minimize this?

2 Answers Bajaj, Siemens,

For more Electrical Engineering Interview Questions Click Here