A2A Demonstration

A2A’s field demonstrator is located in the city of Brescia, in a district called “Il Violino”. This district was recently designed to promote an eco-compatible life-style. It is characterized by a high percentage of customers equipped with PV panels and using a district heating system.

A2A solar

A picture from the A2A’s field demo

The A2A’s demo site covers the MV and the LV networks, up to the final customer connection points, and is general enough to be a concrete testbed for experimenting new concepts proposed by IDE4L, in reference to both the MV and LV networks:

  • MV functionalities: across Europe there are some pilots where the coordination of IEDs in secondary substations and IEDs in primary substations has already been tested. The main limit of this application, commonly known as Logic Selectivity, is that the protection settings and logics are based on the standard grid configuration and every time the grid changes, they are no longer valid. In the A2A’s MV demo site, one tests an adaptive fault location, isolation and service restoration cycle – based on the logical selectivity – where the protection system is always configured in the proper way, independently from the power grid configuration. A2A’s MV demo site is the first operating environment where this concept is tested: investments in smarter solutions for the FLISR are made available and effective with a much higher availability with respect to non-adaptive approaches.
  • LV functionalities: despite the fact that in some EU Countries electronic meters are already deployed, LV network can be neither monitored nor controlled by the DSO. This limitation is becoming more and more critical because of the increasing presence of DERs. The use of smart meters for the technical management of the LV grid was proposed – as a PoC – in some EU projects (e.g. INTEGRIS), but the focus was on monitoring services. In the A2A’s LV demo site, in addition to these functionalities, one uses monitored and estimated data to feed brand new control algorithms to condition the LV status, such as load and generation forecast, state estimation and power control algorithms. Moreover, one scales up the infrastructure put in place by A2A during the INTEGRIS project in order to cover the whole LV grid of a secondary substation. Among the benefits deriving from these new LV activities are:
    • electronic meters are used also for value-added services related to the LV network management;
    • ease of exploitation in the EU market due to the usage of DLMS/COSEM specifications for meters communication;
    • highlight the future role of DSOs as local dispatchers.