I have been kicking around how to sequence/schedule loads in the house to match the predicted solar output for the next day.
I can capture/profile each of the major loads in the house such as
Pool Pump Etc
I run each of these major appliances either through a Sonoff POW or on a dedicated circuit with an IOTAWATT capturing what they are doing.
My idea is to firstly take loads that can be variable and/or started stopped and/or automated.
So the Pool Pump and the HeatPump both fall into this category
Then we would have mandatory loads that need to run every day - the dishwasher falls into this category.
Then we have optional loads that are needed but are flexible - so the washing machine falls into this category as does the clothes dryer.
If i take each of these devices i can create a simple energy “profile” by storing their power draw at say one minute intervals and recording this.
Lets say the standard dishwasher cycle takes 3 hours - i know that is uses short bursts of intense power (whilst heating the water) during the first two hours and then in the last hour more sustained bursts whilst it is rinsing and then drying the dishes. Once the dishwasher has started it can not be stopped (without resetting the cycle) - so powering this on and off as power is available is a non-starter.
This is similar to the washing machine which can not be stopped once it has started or it forgets its place in the cycle.
I know the pool pump draws a constant load and can be turned on and off throughout the day as excess solar is available - similarly the HeatPump.
How would people approach creating a framework for the sequencing of these devices across a a day to enable optimum self consumption and/or minimal demand tarriff/TOU sequencing ?
In my mind i see something like an excel spreadsheet with (say for the dishwasher) 180 columns for the 3 hours of operation - each column would have an energy value
I would then do the same for all the other devices
You then want to somehow slide each of the devices sideways until you end up with the optimum sequence/overlap so at any point in time the energy total is less than the solar output whilst still achieveing the days goals
Ideas anyone ?