Our strategy operates based on our main meter measurements. Based on the data we will limit the power of car chargers when our total production power reaches 58kw. Why 58kw? We do not want to reach 60kw, so we keep a safety distance towards our maximum limit. For example, suppose we power on the additional device when our power consumption is already at 58kw. In that case, it can happen that our total consumption will go over 60kw, before the strategy interval kicks in and it regulates all the devices to lower the power consumption back to 58kw. Another example is slow communication to the car charger where the command for lowering could take 30 seconds to reach the device due to connectivity problems and we would need some time before total power consumption is lowered to 58kw again. That’s why we have a safety distance here.
In settings, we define a maximum current of 140A on each fuse and a maximum power limit of 58kw.
Our first strategy is covering general consumption power and limiting the current on each fuse for protection. The second strategy enables us to use battery power instead of lowering car chargers. This is also a method that prevents over-reaching total power consumption of 58kw or total current 140A on each fuse.
The second option is the strategy with the battery. This strategy is offering to enable additional power when we already shut down all the car chargers with the first strategy, but our object is still using more than 58kw which is allowed. This can happen as the object can have multiple devices which Reduxi does not meter, for example, fridge, oven, and sauna. These devices can add to total power consumption and in total, they can overreach 58kw. In this case, we want to start discharging the battery which will provide us with additional power and current on each fuse needed without increasing the cost of the electrical bill due to higher peak power.
This can be done for a short period of time as these peaks are usually very short and in specific hours.
When the peak consumption is lowered or we get more production for the solar power plant as devices can consume in our house, we can change the direction. We start powering the car chargers and start charging the battery as well.
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Dischard Soc Min |
We do not want to discard the battery when the battery state is lower than 20% |
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Charge Soc Max |
We do not want to charge the battery if the battery state is over 80% |
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Dischard above Current – L1, L2, L3 |
If the current on the main meter is over 140A then the battery should help with additional current otherwise fuse could blow and electrical interruption could happen |
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Charge Bellow Current – L1, L2, L3 |
We would like to charge the battery when there are not enough devices in the house that would consume all the electrical power available or there is more production from the solar power plant which the house could consume |
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Dischard Above Power Active |
We start to discard the battery when the total power consumption is over then 58Kw on the main meter |
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Charge Bellow Power Active |
We start to charge the battery when the total power consumption is lower than 58kw on the main meter – this means we are selling the electrical power to the grid as the house and its electrical devices is not consuming all the electrical power available |
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Affects Main Currents |
The strategy should know if the battery current will affect currents on the main meter. In our case, yes |
Strategy allows us to have OR - OR combination with Discard above Current – L1, L2, L3 and Charge Bellow Current – L1, L2, L3. This means any of this can happen or both of those triggers can happen.