Wrong _sum value after adding PV cluster

English Forum
1

Hi.

I have two pv inverters pv0 and pv1. I have also created a PV cluster named pvInverter-cluster0 to manage pv0 and pv1. It works fine but I notice total PV output, as shown by “_sum[xx, Production: xx]” now doubles. After checking the implementation of SumImpl.java, it seems there is no distinguish between real inverters like pv0, pv1 and logical cluster like pvInverter-cluster0, and hence the value is summed twice.

Am I wrong? Is there any method to solve this problem?

2

Hi,

you are right, this is an implementation detail we currently missed. For Energy Storage System Cluster (EssCluster) we solved the problem with a MetaEss. I would suggest the same approach for PV-Inverter-Cluster as well.

Could you provide a Pull-Request with a fix?

Thanks,
Stefan

3

Thank you for the information!

I will make the fix and PR. It will take sometime though.

1 Like
4

Wouldn’t it also be possible to make the PV Cluster implement VirtualMeter and make addToSum return false?

5

Yes, that would be an even better way. Thanks!

There is no reason to make this behaviour configurable, right?