why we avoid parallel operation of diesl generator?

Answers were Sorted based on User's Feedback

why we avoid parallel operation of diesl generator?..

Answer / goodwhisher

to lokesh

this site is very good for good engineers,please dont spoil
it please,it's no a funny matter.
dont answare if you dont know,please.

Is This Answer Correct ?    9 Yes 0 No

why we avoid parallel operation of diesl generator?..

Answer / johnson m.c.

1) Potential of both alternators must be equal. Both must
have same output voltage.
2) Phase sequences of both the alternators must be same.
The RYB phases of one alternator must
be connected the RYB phases of the other alternator.
3) Frequency of both the alternators must be equal. If one
alternator is operating at a frequency of 49
Hz and the other one is delivering voltage at 51 Hz, then
load on the second alternator would be
more. We have to increase the speed of the prime mover of
the first alternator in order to effect a
match in frequencies.
4) Phase angle of voltages of the two alternators must not
be more than 10 degrees.
5) During manual operation of synchronization, the load
could witness kick (which is a peak of
current). This kick could burn the alternators on the load.
The only solution is the use of automatic
synchronisation equipment. However, expert engineers could
close the CB of the second
alternator when the difference of phase angle between the
two voltages is 2 degrees.
6) The alternators must share loads with respect to their
7) The alternators must have similar voltage drooping
8) The engines of the alternators must have similar
governor characteristics;

Is This Answer Correct ?    10 Yes 4 No

why we avoid parallel operation of diesl generator?..

Answer / rajanikant

lokesh why you want to spoil this site this is very good
site for engineers

Is This Answer Correct ?    3 Yes 0 No

why we avoid parallel operation of diesl generator?..

Answer / lokesh ranjith

because in parallel operation when electricity fails all Dg
sets will gets on even if the load is less also
There will be more diesel consumption
if we run the dgsetd solo mode we can give 80% load can get
goog efficiency

Is This Answer Correct ?    2 Yes 20 No

Post New Answer

More Electrical Engineering Interview Questions

why is that a 4*4mm cable,is always powdered internally

3 Answers   L&T, Construction,

if we have 320KVA Genset kindly advice how much load we can put it.

0 Answers  

Whether the vacuum contactor requires Short circuit protection?If No,why?

0 Answers   Reliance,

plz send me HPCL apptitude paper.. maulik_elect@yahoo.co.in

0 Answers   HPCL,

y we are used signal conditioner in capacitive transducer

1 Answers  

How can calculate ups battery back up time?

25 Answers   Cooper, Cisco, Wipro, Pronet,

How do i carry out or know the vector group of a Dyn1 and Dyn5 transformer

0 Answers  

I try to check the three phase voltage in multimeter, in 125A isolator switch incommer. first i touch R phase, and then i touch Y phase using multimeter, the moment i touched, it blasts and that moment i got blindness. multimeter selector position is correct(750V AC MODE AND RED PROBE WASS IN v AND BLACK PROBE WASS IN COM. MODE. COULD ANYBODY GIVE ANSWER FOR THIS TO AVOID FURTHER ACCIDENTS PLEASE?

2 Answers  

In a Circuit how the MCB and Fuse ratings are calculated. And shall the fuse follws the MCB or it is otherwise?

16 Answers   HCL, Emerson, Thirumalai Chemicals,

why normally Generator rating are between 11Kv to 22Kv?

2 Answers   IFFCO,

control & auxilary circuits used for circuir breakers

0 Answers  

can we run a motor rated 50Hz,415vac,1440RPM At higher speed then rated on name plate with the help of VFD /drive on long term basis.wheater it will effect the motor life

3 Answers  

  • Civil Engineering Interview Questions Civil Engineering (4639)
  • Mechanical Engineering Interview Questions Mechanical Engineering (3704)
  • Electrical Engineering Interview Questions Electrical Engineering (15780)
  • Electronics Communications Interview Questions Electronics Communications (2638)
  • Chemical Engineering Interview Questions Chemical Engineering (762)
  • Aeronautical Engineering Interview Questions Aeronautical Engineering (79)
  • Bio Engineering Interview Questions Bio Engineering (30)
  • Metallurgy Interview Questions Metallurgy (95)
  • Industrial Engineering Interview Questions Industrial Engineering (199)
  • Instrumentation Interview Questions Instrumentation (2882)
  • Automobile Engineering Interview Questions Automobile Engineering (171)
  • Mechatronics Engineering Interview Questions Mechatronics Engineering (41)
  • Marine Engineering Interview Questions Marine Engineering (62)
  • Power Plant Engineering Interview Questions Power Plant Engineering (170)
  • Engineering AllOther Interview Questions Engineering AllOther (1335)