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What is the significance of the Parameter "Load Harmonics Rise" in Accusine Product?

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varad
Lieutenant | EcoXpert Master varad Lieutenant | EcoXpert Master
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Posted: ‎2019-04-27 02:26 AM . Last Modified: ‎2020-12-02 03:31 AM

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‎2019-04-27 02:26 AM

What is the significance of the Parameter "Load Harmonics Rise" in Accusine Product?

Can anyody tell me what is the significance of  "Load Harmonics Rise" in Accusine Prouct? and how exactly it get calculated?

Also what is the acceptable rise?

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Szymon_Hochół
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Posted: ‎2019-08-23 12:13 AM

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‎2019-08-23 12:13 AM

Hello,

the parameter on your screeen does not look good. As you can see, the filter is injecting some current in order to cancel harmonics (3-6% of its nominal current) but THDi values instead of getting lower become higher. This is because the AHF itself causes high rise in harmonics drawn by the load. 

 

This is clearly a case for technical support, as it needs further investigation (which harmonic orders precisely became higher, what are the loads etc. etc.) I strongly recommend you contact them. 

See Answer In Context

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FirdousKhan
FirdousKhan Community Alumni (Retired)
Community Alumni (Retired)

Posted: ‎2019-08-21 02:29 AM

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‎2019-08-21 02:29 AM

Hello the community! Can you help @varad on this topic please?

 

 

Best,
Firdous - Animation and Moderation Exchange Community Team
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Szymon_Hochół
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Posted: ‎2019-08-21 03:38 AM

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‎2019-08-21 03:38 AM

Could you please specify where exactly you find this parameter?

 

Installatuion of AHF in the electrical network makes a change in impedance seen from the load (AHF is low impedance vs the source). Because of this, running AHF causes a rise in harmonic currents drawn by non-linear loads. This is why you need to take a sizing factor into consideration when sizing AHF - to compensate this rise. I don't have details about the way this parameter is calculated in AccuSine but I can suppose it is simple comparison between harmonics values before and after the unit is turned on. Very high value of harmonics rise can be a symptom of resonance in the electrical network. You should not allow the harmonics to rise too much in order to protect the loads.

 

Hope this helps,

BR

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varad
Lieutenant | EcoXpert Master varad Lieutenant | EcoXpert Master
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Posted: ‎2019-08-22 06:53 AM

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‎2019-08-22 06:53 AM

Hii...BR

 

Thanks for such informative reply. Please find herewith attachments of AHF Screens for Load Harmonics Rise. Is it the same parameter for which you are talking?

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Szymon_Hochół
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Posted: ‎2019-08-23 12:13 AM

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‎2019-08-23 12:13 AM

Hello,

the parameter on your screeen does not look good. As you can see, the filter is injecting some current in order to cancel harmonics (3-6% of its nominal current) but THDi values instead of getting lower become higher. This is because the AHF itself causes high rise in harmonics drawn by the load. 

 

This is clearly a case for technical support, as it needs further investigation (which harmonic orders precisely became higher, what are the loads etc. etc.) I strongly recommend you contact them. 

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varad
Lieutenant | EcoXpert Master varad Lieutenant | EcoXpert Master
Lieutenant | EcoXpert Master

Posted: ‎2019-08-23 08:20 PM

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‎2019-08-23 08:20 PM

Hii BR...

 

Than you very much for discussing over this topic. We will contact to the tech support.

 

Can you please share any study material related to this?

 

 

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Szymon_Hochół
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Posted: ‎2019-08-25 11:56 PM

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‎2019-08-25 11:56 PM

Unfortunately I don't have any documents to share. This are topics covered during AccuSine trainings.

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