FEMS App Self-Consumption Optimization
1. Introduction
Dear customer,
Thank you for choosing the "FEMS App Self-Consumption Optimization". You are welcome to send us your suggestions so that we can further improve the quality of our products.
2. Installing the app
The FEMS App Self-Consumption Optimization is installed by default on all FENECON Home and Commercial systems.
With FENECON Industrial S, Self-Consumption Optimization can be optionally selected during installation. For all other Industrial systems, FENECON carries out the installation of the app.
3. FEMS App Self-Consumption Optimization
In combination with a PV system, a combined heat and power plant (CHP) or a wind turbine, the Self-Consumption Optimization is the most common application for an electrical energy storage system.
3.1. Functionality
The control algorithm ensures that the proportion of self-used energy ("self-consumption") is optimized. To this end, the electrical energy storage system is always charged when generation is greater than consumption and discharged when generation is insufficient to supply the electrical consumer loads. This is technically equivalent to an adjustment to "0" at the grid connection point, i. e. avoiding grid withdrawal and grid feed-in. Netted active power values (totaled across all three phases) are used here.
3.2. Visualization and configuration in the Online Monitoring
The amount of self-consumption can be viewed in Online Monitoring via the associated flat widget:
In the example above, self-consumption is 92 %. This means that 92 % of the electricity generated is consumed.
A click on the "History" tab displays the self-consumption as follows:
The picture shows: The energy produced by the PV system that is not directly consumed charges the battery (green) until it is full (dashed line). From then on, the surplus energy is fed into the public grid (blue). In the evening, the electrical energy storage system discharges again (red) to supply consumers (yellow).
