Unable to set Peak Shave Current Limits

Q&A and troubleshooting
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1

Hi there,

I’m attempting to set current limits under the Peak Shaving menu, though both options are disabled (and can’t be enabled). What would cause this?

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This is a system consisting for 4x 10k Quattros in a 2x2 split phase configuration, with a 200A 120v/240v grid connection.

All loads are on the AC Out 1, and the grid is connected to AC In 1 (with Venus configured accordingly).

Thanks!

2

Do you have an energy meter?

3

No, we have ESS set to use the internal meters of the Quattros (given all loads are on the load side of the system).

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4

Hmm, so thinking about this a bit more: do the Peak Shaving current limit settings in the screen above only apply if there is a grid meter?

Said differently, if there are only loads on the ‘AC output’ side of the system — so no grid meter needed — then the AC Input Current Limits become the limiting factor for Peak Shaving.

5

I am running the following:

MultiPlus2 - 3kVA fw 2629552
ESS Assistant ver. 018C (Optimized without batt life. Min. SOC 60%)
Vernus OS 3.63
Carlo Gavazzi EM112

The IMPORT Peak Shaving button remains grey and not clickable

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6

Bump

7

I had a similar situation, there seems to be a bug.

My setup;
MP2 with AC and DC PV, all loads and PV on AC output, no external grid meter (using the internal one)

What worked for me;
Switch grid metering to external (even though there is no external grid meter).
Enable peak shaving and set limit (i only enabled import limit).
Switch grid metering back to internal, the peak shaving settings remain unchanged.

I have not yet checked to see if peak shaving actually works.

edit: this does not work

8

Unfortunately this did not do the trick

I have an external meter (EM112) hence tried the reverse of your suggestion.

No dice. The “Limit import current” button remains grey regardless of what I try

9

Bump

10

I’ve made a bug report, peak shaving can be enabled but does not appear to work.

I’ll try to add a grid meter and report back.

11

I was able to do some tests on a single phase system, one multiplus, with a grid meter installed the peak shaving option works as intended. Without a grid meter you can use the limit AC input current in the inverter settings. This is of course different from limiting the total input power when using multiple inverters.

12

Facing the same issue, has there been any update to this?