Integrid - Bridging the Gap

21 functions (e.g., cost minimization) or to supply flexibility for grid operation (non-frequency ancillary services). This concept has three main areas: • Flexibility estimation, based on user comfort definitions and preferences. • Monitoring and forecasting of household load and PV profiles, appliance use and comfort preferences. • Optimal scheduling of appliances for the next day/ times based on user comfort and optimization criteria. Software/Hardware The prototype has the following core software modules: 1) interface manager; 2) energy analytics tools, e.g., load and PV forecasting, flexibility estimation; 3) data manager; 4) energy manager with energy optimization. The HEMS hardware modules consist of: 1) main module (computation core, storage and interfaces); 2) expansion module that include additional peripherals and communication interfaces. Figure 3.6 – Home energy management system prototype Innovative features: • Computation of behind-the-meter (privacy- preserving) flexibility to be exchanged with the gm-hub. • Dynamic user interface that presents optimal and suboptimal solutions for house operation and introducse a sensitivity analysis based on restriction relaxation techniques. Final TRL: 8 Electric Vehicle Supply Equipment Concept InteGrid covers typical AC charging using the vehicle’s own on-board charger to which power is delivered through a utility grid AC connection (usually limited to current ratings from 16A to 60A), which requires a simple infrastructure. This connection is common in residential and commercial locations and is expected to be installed where vehicles will stay the longest, allowing for longer windows of opportunity to exploit their flexibility for grid support services by regulating their charging power as defined in IEC 61851. The vehicle is supplied AC power through external equipment referred to as Electric Vehicle Supply Equipment (EVSE). Hardware The prototype has basic charging functions such as charging state detection, state machine sequence according to standard, and the modulation of different charging rates using a PWM (PulseWidthModulation) signal as described in IEC 61851. Wi-Fi (802.11 b/g/n) and Ethernet communication were implemented. There is a built-in class 1 measurement circuit, compliant with IEC 62052/62053, which can be accessed by the technical operator of the network, the owner of the installation, the HEMS and the user. In terms of software, algorithms for charging control and energy measurement were implemented and a REST API is available for integration with commercial HEMS. Innovative features: Capacity to manage the charging rate in real-time and interactive integration with the HEMS developed within InteGrid. Additionally, a number of other interesting features such as high accuracy energy measurement and cloud-based user interface were included. Ethernet, Wi-Fi and Bluetooth interfaces were also added for increased connectivity. Final TRL: 8