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PM8000 sag/swell detection

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daniel_aerts_gm
Ensign daniel_aerts_gm
Ensign

Posted: ‎2016-01-11 12:36 PM

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‎2016-01-11 12:36 PM

PM8000 sag/swell detection

Hi,

For someone who's familiar with the ION range of power meters, setting up sag/swell detection is quickly done. Or at least, that's what someone would think. I set up the sag/swell of a PM8000 meter, like I'm used to. Next thing I noticed was that, although setup correctly, no sag/swells were triggered. I opened the meter's configuration in Designer and noticed that 1. the sag/swell module of the PM8000 is different from the sag/swell module of the ION meters and 2. the default configuration of the sag/swell module also differs:

1. In the PM8000, a setup register called "enable" was added. The "enable" input of the module is also still present. I'm not sure why two ways of enabling the sag/swell module would be an advantage (?).  Another issue: if sag/swell is setup from a Vista diagram, none of the "enable" registers is being displayed and unfortunately, this setup register is disabled by default. I thought that, by entering the nominal voltage in the Vista diagram, the sag/swell detection would work (as with the ION-meters) but unfortunately it didn't.

2. In the default configuration of the ION meters the nominal voltage input of the Sag/Swell module is left unlinked. In the PM8000 this input is linked to the FAC nom volt input. I see the reason behind it but on the other hand it makes things complicated if the default configuration of an identical function differs from one meter type to another.

Regards,

Daniel

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Yut
Captain Yut
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Posted: ‎2016-01-12 08:39 PM

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‎2016-01-12 08:39 PM

This module is quite more complicated than the previous one but it give you more room to play with I consider this new feature as advantage. Page 521 in the ION Reference explain everything.

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daniel_aerts_gm
Ensign daniel_aerts_gm
Ensign

Posted: ‎2016-01-12 11:17 PM

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‎2016-01-12 11:17 PM

Yut, I'm sorry but I don't see an advantage in having an enable/disable choice in the setup of the module. I'm also missing the logic: if the voltage reference input of the module is linked then the voltage value in the setup of the module is ignored. On the other hand, if the enable input of the module is linked, the enable in the setup will prevail. It's making things unnecessary complicated. What's more, none of these control registers is appearing in the default Vista diagram. A user with average knowledge of the PM8000/IONmodules will never find out by himself why the disturbance recorder is never triggered once he has set up the reference voltage in the Vista diagram.

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Yut
Captain Yut
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Posted: ‎2016-01-13 12:02 AM

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‎2016-01-13 12:02 AM

There are some case that we need to work with this on condition however if the input is unlinked the default will be enable.

In my case our customers are utilities who are studying PQ deeply in their grid.

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