Integrid - Bridging the Gap

12 distribution grid caused by the penetration of increasing RES and the greater electrification required for energy transition and the responsive market trends based on flexibility. The gm-hub developments were achieved by using the best practices of scalability and in alignment with EU directives on energy sector policies and recommendations. The approach bridged distribution grid technical needs and those of its stakeholders in a competitive digital environment, enabling the appearance of disruptive business models. Demonstration approach InteGrid addressed the aforementioned concept in an integrated approach demonstrated across the different demonstration sites. This project aims to demonstrate concepts by integrating single solutions from different systems, underlying regulations and scales at three large demonstration sites. The main focus was on the operation of a distribution network displaying a high share of renewables, employing the flexibility offered by different technologies as well as energy carriers. The demonstration was to be organized in these three locations based on the cases of use as described below and divided into four business domains: i) Grid operations; ii) Grid and Market Hub; iii) Grid Users; iv) Energy Services. HLUC01 - Operational planning of MV distribution network to pre-book available flexibility This HLUC addresses the management of distributed energy resources (DER) connected to distribution networks based on a multi-period and predictive approach. The DSO computes a series of optimal automatic and manual control actions for DER (and DSO own resources) for a predefined time to minimize active power losses and solve potential technical problems. Network reconfiguration capabilities will also be considered. Input data are provided by the active and reactive power forecasts for the net-load in each bus and for the renewable energy sources (RES) connected to the MV network, as well as by operating points and available flexibilities. Interaction with LV network control capabilities is also included in the predictive management strategy, in liaison with HLUC02. HLUC02 - Distributed monitoring and control of LV network using available flexibilities This HLUC addresses the operational control of LV flexibilities (i.e. small-scale storage, consumer/ prosumer flexibility) based on predictive management and real-time monitoring of voltage profiles. This will ensure that the DSO will be able to comply with the requirements of the EN 50160 standard on admissible supply voltage variations. Predictive management • Integration of existing systems such as demand response, EV management, batteries and SCADA into a micro-grid concept that will support the self-sustainability of residential prosumers, business prosumers and communities • Upgrading of VPP with LV/MV optimization, control and forecasting algorithms and integration with market hub for exchange of flexibility and validation Ljubljana, Slovenia: “Self-sustainability facilitation” • City environment with high-load factor and demand on reliability • Smart distribution substations • DR with engaged prosumers by providing energy forecasts that facilitate home automation and better decision (incl. contextualized feedback) Stockholm, Sweden: “Consumer engagement towards sustainability” • Large-scale, predictive and integrated management of the distribution grid aiming to combine new DER with existing assets, including customer flexibility • Demonstration of the combined operation of DER and advanced grid automation Lisbon District, Portugal: “From smart grid to disruptive business models”