labview

[lalshah]

Respected sir,

we are currently doing a project in labVIEW in which we have to create VI's to measure active,reactive power and also the power factor of load  under test.we have completed a major portion of project but there's a difficulty in determining the power factor. we are not getting any idea to determine power factor.Sir suggest an idea or any methodology so that we can complete our task.hope you will be responding soon.

yours sincerely

sudhir kumar

college of technology 

pantnagar

uttarakhand

INDIA

[George_P_Burdell]

Sudhir-

This is something that can definitely be done in LabVIEW.  However, I need some additional details about your setup:

1. What hardware are you using?
2. How are you taking these power measurements?
3. By power factor, do you simply mean the ratio of the real power flowing to the load to the apparent power?
4. What are you considering your apparent power?
5. Are you looking to do this in a Real-Time Operating System?  If not, you will probably get more traffic to your question if you post in the MultifunctionDAQ Forum (if this is the appropriate hardware) as this does not seem to be Real-Time OS related.

[muks]

Continued here

[lalshah · Accepted solution]

respected sir

we are currently doing a project in labview 9 and our object is to get real time data of power system like current,voltage,phasors power etc.sir we are able to get the continuous data of any load but a problem occuring while displaying waveforms in labview is we are not getting consistent power factor inspite of we are not changing load in our test circuit.the other measurements like rms values of voltage and current are also varying but deviation is within acceptable limits.But power factor vary within a large interval.we are using tds 2024 digital storage oscilloscope with USB mode of communicatio.sir if there is any solution to mitigate the power factor deviation please inform us.

Thanking You

Yours sincerely

sanjay shah

college of technology pantnagar

uttarakhand INDIA

[lalshah]

Respected sir

We are currently doing a project in Labview and object is to acquire real time data of power system(voltage,current etc.).sir we are performing on a resistive circuit and getting continuous data but acquired waveforms  are out of phase that should not be for a resistive circuit.one more problem occuring ,while running our VI's in labview sometimes we get a message of "query interrupted" and acquistion stops there.Sir suggest some possible solutions as soon as possible so that we can proceed successfully further in our project.

For your ease we are sending our created VI's also if there is any error please inform us. we'll be thankful to you.

Yours Sincerely

sanjay shah

college of technology PANTNAGAR

UTTARAKHAND 

INDIA

[muks]

You have marked your question as a solution. Why??? please stick to one thread.