725KW Three DG set Synchronised but DG no-1 power showing
750KW DG n0-2 power showing 500KW DG no-03 showing 500KW.
DG is Shynchronised but why this different power showing?
Answers were Sorted based on User's Feedback
Answer / jince
Regarding paralleling DG sets we sticks only on the theoratical conditions of same voltage frequency phase angle and phase sequence. And now a days its easy to achieve using sync relays. Load sharing is the major thing in paralleling the DG sets. Many factors are depending on it
1. Droop of individual DG set must be same
Droop implies both voltage and frequency droop. it is the percentage of noload voltage or frequency. ex. 1% 2% 3% etc. Ex.1% voltage droop of 420V(noload)is 4.2V and it means on full load DG voltage comes down to 415.8V and not any more
Same is the case with frequency droop. All DG's droop must be same
2. On loadsharing we adjust voltage of DG's to met REACTIVE POWER AND SPEED(FREQUENCY) TO SHARE ACTIVE POWER
In order to share the load evenly we must control the voltage and frequency of individual DG's constantly
And it depends on load nature
In my personal experience for resistive loads (lamps)
loadsharing is not required as no variation occurs
For varying loads like lifts motors ac chillers compressssors etc constant loiadsharing is required
For clarification please reply
Is This Answer Correct ? | 3 Yes | 0 No |
Answer / tango
synchronization is basically done with Voltage, Frequency and Phase angle but It is recommended to Have same Power Rating of Transformer or DG, in your case it seems to be using DG's of Different rating and so they have been showing Power as per their capacity
Is This Answer Correct ? | 2 Yes | 2 No |
in railways why we use the power in 10,20 30kv,why not in the multiple of 11kv
if we convert kva into Ampers,which one formula use by us,pls tell me?
What is Earth Fault and Over current Fault.
What is working principle of ACB and VCB?
relation between power station capacity and voltage level?
Current Transformer's star point must face the protected object for the relay operation?
when ac current flows thru d coil of a contactr,it energizes,magnetic field attracts d contact of the coil...nw wont dt ac current in d contct induce current back on to d coil thru mutual inductance leading to high currnt in d coil
When Neutral exceeds or equals the phase current in both single phase * three phase system?
for hipot test on 33kV busbar, we will test on 70 kV or 56kV, what is the acceptable leackage current?
Dry type transformers
my question is Megger of cable insulation or swgr board meggerring some values in one day 50mohms,some other day checking different values(20Mohms). this tell that some person tell that that values ok. how to identify the megger value is correct. pls tell me the answer.
Dear All please ive me ur ideas... What is the major diff between cu conductors and Al conductors ?