Answer / raul

Theoritically it is like dat only dat the frequency n voltage of the incoming machine must match the grid frequency n voltage for proper synch, but practically it is kept slightly higher in order to reduce the impact on speed governor n automatic voltage regulator bcoz as the grid pulls d generator into synchronism, there is sudden load applied on d generator due to which there is a dip in both frequency n voltage of d generator which is 2 b corrected by the speed governor by opening d turbine valve more n more steam enters into turbine which corrects d dip in frequency n on d other hand d AVR corrects d dip in voltage by giving d signal 2 d pilot exciter to give more excitation 2 d rotor field winding of d generator.
I hope d concept is now clear 2 u......

Answer / kj

In theory the frequency and voltage should match exactly.
In practice the incoming generator voltage and frequency
should be slightly hogher than the grid.

This is to prevent the set from tripping on reverse power
or kva. The incoming generator will pick up some load
straight away so the frequncy and voltage matches the grid.

Answer / raul

Please read some quality books first b4 answering such questions......... but still thnx for some brainstorming

Answer / b goutham

Actually the condition for synchronization is voltage and frequency of incoming generator should be equal to the grid otherwise there will dead short cicuit...and also large currents flows through the incoming alternator which may damage the winding of the alternator.....so the voltage and frequency should be the same...

i have dry type transformers can you help me that how many tests i can do to know the performence of transformer and also please tell me about the BDV test and Insulation resistance test in oil cooled transformers

4 Answers   Hyundai,

---

difference between relay and solenoid?

2 Answers  

---

1 hp single phase motor is more likely to get hot thsn inone hp 3 phase motor its true or false? If true why?

3 Answers   Focus, Focus Energy,

---

send me any model test paper of clerical post of state bank of india.......

0 Answers  

---

Write down the name of 2 lady Bir Pratin of Bangladesh

0 Answers  

---

Why Transformer Neutral having one earth pit ( more earth electrode resistance) whereas body have many earth pit ( less earth electrode resistance)?

0 Answers   OPS,

---

what will happen if phases are not shorted with neutral in transformer impedance test? and if neutral is not connected with ground?

1 Answers  

---

What is the difference between PLC and Embeded system

0 Answers  

---

why we pefer the salient pole for synchronous motor ?

2 Answers  

---

What is the Levels of High Voltage, Medium Voltage & Low Voltage?

1 Answers  

---

How we calculat the NGR of 3phase Generator, Our generation voltage 11KV

0 Answers   MSP, Toyo Denki,

---

what is the difference between indoor & Out door substations

5 Answers   HSBC,

---