Query about Power Factor Change in a Power Plant

AI Thread Summary
Power factor (p.f) in a power plant changes when multiple gas engines operate in parallel, with a noted increase from 0.80 to 0.85 when all engines are running. This change may be attributed to transformer reactive losses and the combined effects of the generators' operation. The discussion raises questions about the methods used to measure power factor, including the types of meters employed. Additionally, inquiries are made regarding the transformer's impedance and the per unit voltage drop across the transformer with varying numbers of generators. Understanding these factors is crucial for optimizing power factor and overall efficiency in the plant.
rezwan17
Messages
1
Reaction score
0
I have a query about the power factor change in a power plant. There are 8 gas engines in parallel. When 1 engine runs with a set p.f of .8 the output at the delivery after transformer (11/132kv, step up Ynd1) is almost same. But when all generators are running with each having .80 p.f the p.f after transformer changes to .85. (All gensets are in parallel equal capacity and connected to single transformer and distance from gen to trans is comparatively small). Is this only for the transformer reactive loss or other thing is associated with this. Why the p.f increases and any calculation regarding the consumed VAr of the x-former. please specify elaborately.
If you need any further information please specify. I am the engineer of that power plant so can give you enough detail information.
 
Engineering news on Phys.org


what are you using to determine PF? Wattmeters, varmeters, ammeters, Qmeters ?

What is impedance of your transformer?

What would be per unit drop across transformer with one generator, and with 5 ?



old jim
 
Thread 'Weird near-field phenomenon I get in my EM simulation'

Thread 'Weird near-field phenomenon I get in my EM simulation'

I recently made a basic simulation of wire antennas and I am not sure if the near field in my simulation is modeled correctly. One of the things that worry me is the fact that sometimes I see in my simulation "movements" in the near field that seems to be faster than the speed of wave propagation I defined (the speed of light in the simulation). Specifically I see "nodes" of low amplitude in the E field that are quickly "emitted" from the antenna and then slow down as they approach the far...
View full post »

Thread 'EMF (Electromagnetic Field) & EHS (Electromagnetic Hyper Sensitivity)'

Hello dear reader, a brief introduction: Some 4 years ago someone started developing health related issues, apparently due to exposure to RF & ELF related frequencies and/or fields (Magnetic). This is currently becoming known as EHS. (Electromagnetic hypersensitivity is a claimed sensitivity to electromagnetic fields, to which adverse symptoms are attributed.) She experiences a deep burning sensation throughout her entire body, leaving her in pain and exhausted after a pulse has occurred...
View full post »

Similar threads

Are Utility Power Quality Issues Impacting Genset Stability?
Replies
18
Views
2K
Is Replacing a 25 kVAr Unit with Two 12.5 kVAr Units More Efficient?
Replies
2
Views
1K
Self excited induction generators and grid connected solar inverters?
Replies
9
Views
2K
Power Factor Circuit Design & Analysis - Rawang Terrace House
Replies
1
Views
2K
Different way of calculating power factor from multiple sources
Replies
3
Views
3K
Power System, synchronous generator
Replies
4
Views
2K
Risk of operation in power plant
Replies
1
Views
3K
Power grid & generator questions
Replies
46
Views
6K
How long can nuclear plants last without power? (CME hit)
2
Replies
52
Views
9K
Real power not the only useful form of electrical power?
Replies
10
Views
5K

Hot Threads

Recent Insights

Back
Top