Demonstration of IDE4L concept and solutions

The IDE4L project focuses on

  • improving distribution network monitoring and controllability by introducing hierarchical decentralized automation solution for complete real-time MV and LV grid management,
  • utilizing existing distribution networks more efficiently and managing fast changing conditions by integrating large number of distributed energy resources in distribution network through real-time automation and market based flexibility services,
  • guaranteeing continuity and quality of electricity supply by distributed real-time fault location, isolation and supply restoration solution cooperating with microgrids, and
  • improving visibility of distributed energy resources to TSOs by synthesizing dynamic information from distribution system and to commercial aggregators by validating and purchasing flexibility services.

Conceptual development of active distribution network, automation architecture and active network management is the basis for the whole project. The implementation of active distribution network has been based on existing technologies, solutions and future requirements. The project has defined, developed and demonstrated the entire system of distribution network automation and functionalities for active network management (see Figure below).

ANM concept

Figure. Active network management concept of IDE4L.

The advanced distribution automation system monitors MV and LV grid near real-time and controls DSO’s IEDs, contracted DERs and flexibility services via secondary and tertiary control systems of congestion management. The central part of automation solution is Substation Automation Unit (SAU) located at primary substations and selected secondary substations. SAU merge real-time monitoring data from IEDs and smart meters belonging to its control area. SAU includes local database where all information is stored to be used locally by decentralized functionalities or further reported to other SAUs or control centre IT systems like SCADA/DMS or meter data management system (MDMS). Fully automated local decisions are controlling power switches and providing optimized setting points for IEDs. All data exchange and data modelling are based on international standards IEC 61850, DLMS/COSEM and CIM to enable interoperability, modularity, reuse of existing automation components and faster integration and configuration of new automation components. By partly decentralizing the decision making, the problem solving and communication requirements may be relaxed, the scalability of automation system may be guaranteed, the reaction time to varying network conditions, disturbances, outages, etc. may be decreased and the workload of control centre operators may also be decreased which might otherwise become very demanding.

Demonstrated functionalities in DSO environment and implemented in SAUs and IEDs are:

  • MV and LV real-time monitoring
  • MV and LV state estimation
  • Load and production forecast
  • Distributed FLISR with a high degree of DER penetration
  • Network description update
  • Logic selectivity and Protection configuration update
  • MV and LV network power control (secondary control of congestion management)

IDE4L demonstration sites

The IDE4L project has 3 field demonstration sites belonging to A2A Reti Elettriche Spa, Østkraft Holding A/S and Unión Fenosa Distribución, S.A. The demonstrations will validate the architecture, the monitoring, control and protection systems developed in IDE4l in thede physical grids, which include photovoltaic panels, wind turbines, heat pumps and electric vehicles connected to urban and rural networks, as well as actual customers.

A2A’s field demonstrator is located in Italy, in the city of Brescia in a district called “Il Violino”.

Østkraft Demonstration Site is located in Denmark, on the Northern part of Bornholm in a residential area in the village Tejn.

Unión Fenosa Distribución demonstration site is located in Spain, in the headquarters of Antonio Lopez street in Madrid.

In addition to the field demo sites, the IDE4L project also has 6 laboratory demonstrations at these demo sites:

IREC

RWTH

Telvent

TUT

KTH

DTU