Welcome to the new Schneider Electric Community

It's your place to connect with experts and peers, get continuous support, and share knowledge.

Close
Important Announcement: WELCOME to the new Schneider Electric Community! Community is now no longer part of Exchange, and is now rebranded under se.com. If you have any bookmarks and links saved, we request you to update them to ensure that you continue accessing our community from this new location. For any issues that you might encounter as part of this change, please reach out to SchneiderCommunity.Support@se.com, and the team will help to get your issues resolved.
Invite a Co-worker
Send a co-worker an invite to the Exchange portal.Just enter their email address and we’ll connect them to register. After joining, they will belong to the same company.
Send Invite Cancel
82164members
349731posts

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

Metering & Power Quality

Collaborate with multiple experts and discuss various topics about Power Meters and Power Quality. From design & implementation to troubleshooting and more, get support from experts and share your experiences by subscribing to the Schneider Electric Exchange forum today.

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

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?


Accepted Solutions
Szymon_Hochół
Commander Commander
Commander

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

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

6 Replies 6
FirdousKhan
Community Alumni (Retired)
Community Alumni (Retired)
0 Likes
0
479

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

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

 

 

Best,
Firdous - Animation and Moderation Exchange Community Team
Szymon_Hochół
Commander Commander
Commander

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

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

varad
Lieutenant | EcoXpert Master Lieutenant | EcoXpert Master
Lieutenant | EcoXpert Master
0 Likes
3
470

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

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?

Attachments
Szymon_Hochół
Commander Commander
Commander

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

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. 

varad
Lieutenant | EcoXpert Master Lieutenant | EcoXpert Master
Lieutenant | EcoXpert Master
0 Likes
1
460

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

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?

 

 

Szymon_Hochół
Commander Commander
Commander

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

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