Presently it is once again reading the draw from the house incorrectly, the solar is generating about 600watts, the house is drawing about 3300 watts with the solar panel breaker turned off. I believe to draw from the house should remain steady at some value and once the solar breaker is turned on, the solar panels and utility will both supply that same load splitting it between these two sources depending on how much sun is shining. This is not what’s happening.
With the solar panels off the sense sees the entire house load correctly as 3000 watts, then when I turn the solar breaker on, generating 500 watts, the sense sees the house load drop by 500 watts to 2500 watts, this is not correct. The house load is still 3000 watts but 500 of those watts are being supplied by solar.
Sense on the other hand incorrectly thinks the house load has dropped to 2500 watts and it sees the solar supply 500 and utility supplying 2000 watts, this is incorrect. The house remained at 3000 watts and 500 watts was now supplied by solar and 2500 was supplied by utility.
I have attached two screen shots to illustrate my issue. In the first picture you can see the solar production at 586 Watts and the utility is supplying 2566 Watts, therefore the total the house is drawing at that moment in time is 586+2566= 3152 Watts, therefore the solar is supplying (586/3152)x100= 18.59% of the house total power draw.
However the second picture was taken 1 second after the first picture so the values have not changed but the second screenshot is where the problem is. In the second picture we can see the solar is the same (+2 watts) at 588 but the “power triangle” seems have taken the power sensed at the main utility input wires and subtracted the power coming in from the solar panel wires and labelled this as the power “from grid”, it has then labelled the actual power coming in from the utility power wires as “Home” at the top of the triangle. It has then calculated the solar power contribution incorrectly using the total house power as 2563 Watts (instead of the correct 3152 Watts), while keeping the solar contribution correct at 588 Watts; therefore the calculation is as follows (588/2563)x100= 22.94%.
Lastly I’d like to let you know that if I turn the solar inverters off completely then the power triangle input from the utility no longer subtracts the solar contribution and the “Home” total at the top of the triangle becomes correct at approx. 3100 watts.
See attached screenshots.