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?
Answer Posted / 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 |
Post New Answer View All Answers
where can i get vijaya electricals limited in hyderabad interview auestions can u give me the website address plz
HAI SENT HPCL APTITUDE QUESTION PAPER, MY EMAIL ID IS angus_eee04@rediffmail.com,angus_eee04@yahoo.com
i have 500 amp inductive load of motors ,,,pleas tell me how can i calculate for capacitor bank for improving my power factor to 99 .....calcullations for capacitor bank,,,,
What are the Return ( Monthly / quarterly/ Annual submitted to Electical Inspector for an establishment (Factory in Maharashtra-- Small scale category having seperate HT line of 22KV ) as per Maharashtra Electricity Act
why 1.7Uo for HV cable Hi pot test?IE standard why?
at which voltage level arcing ground is occurs ??????????
how is the incoming cable size calculated for a given current rating of a panel??
2. What are the parameters of EHT sub-station?
what are the main faults that occur in stabilizers? How they corrected and resolved ? Types of stabilizers ?
Name the component u would expect to find in a switchgear assembly?
HI SIR, AM PREPARING FOR RRB FOR SECTION ENGINEER POST. PLZ SEND ME THE PREVIOUS QUESTION PAPERS AND HELP ME. I HAVE NO ENOUGH TIME MY EXAM DATE IS 22ND JUNE.... MY EMAIL ID IS nalla.amarnath@gmail.com
What will be the output voltage of a transformer if it is primarily energized from a square wave voltage source?
How to design the no. of ceiling fans required in 5mtr X 10 mtr X 3 Mtr hight room?
Explain the operation principle, advantages and disadvantages of the following converters: a) A 12 pulse converter b) A Switch-mode inverter c) A thyristor inverter
Rules and standards of electrical control wiring ?