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

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

Answer / kj

If the DG's are the same rating then the load sharing is
out of adjustment.

Load sharing can be by speed droop (see answer above) or by
load sharing controller.

Adjustment of either of these can rectify problem.

What is the use of Gateway RTU like ABB RTU 560 in power plant, SAS system ?

1 Answers   ABB,

---

Can we use droop CT in neutral in place of W phase of alternator ?

2 Answers  

---

Please tell me the formulaes while designing a substation for power Calculations in designing a 33 KV Substation?????

0 Answers  

---

what are the limitations to use 33kv ac in industries?

0 Answers  

---

There is two transformers of 2MVA & 3MVA, which transformer is located at the sending end & which is at receiving end. why?

3 Answers  

---

some basic standard questions on transformer.

0 Answers   United Engineering,

---

Explain the grounding concept adapted in aircrafts?

2 Answers  

---

How to calculate the fuse rating depend upon the DC circuit?

0 Answers  

---

Why not implimenting power factor in Diesel generator

6 Answers   HP,

---

how electical engineer is related to apsrtc (general) post? if they ask a question in interview as why did u choose this job what shd be answer

0 Answers  

---

What fomula is used to calculate: 1. rated frequency withstand voltage, and 2. rated lightning impulse withstand voltage.

0 Answers   PNG Power,

---

What is the meaning of dedicated earthing?

0 Answers   Dabur,

---