The ADDRESS system has been tested in Italy , as shown in the diagram below, specifically focusing onto the validation of the upstream part of the ADDRESS chain, going from Active Demand buyers to the aggregation platform, with a focus on the DSO and related distribution network operations for a large MV network, and on the effect of Active Demand (AD) visible at the High Voltage level.
In this test, AD products are emulated by means of a storage system and by modifying load/generation of some MV customers/producers
This demonstration contributes to providing recommendations for future deployment on the cost reduction of demand response technologies, the verification / measurement of active demand product delivery, the reliability of part of the full value chain and the regulatory options needed to deploy efficiently.
The scope of the field tests addressed the functional components, which are to be used by the DSO in an active grid environment. The DSO algorithms, Medium Voltage Control Centre (MVCC) prototypes and SCADA functionality are evaluated, using the requirements and criteria that have already been defined in the design process and have been tested during the laboratory tests.
The MVCC prototype developed in the ADDRESS project is installed on the AD Server component that runs on a computer server located in the Campobasso Control Centre. The Supervisory Control And Data Acquisition (SCADA) system of Campobasso Control Centre provides I/O data to support the DSO functionality. The Remote Terminal Units (RTU) and active/reactive power measurement devices are installed in the HV/MV and in some MV/LV substations, in order to provide real measurements for Distribution state estimation. The RTU installed in the HV/LV substation transmits measurements to SCADA via IP network.
Most of the messages exchanged between the MVCC and the external players involved in the architecture are simulated. In particular, the interactions with the market and the aggregation entities were simulated by manually creating a total supply bid file (with the AD products characteristics offered to AD market sent to SO for validation) and uploading it in the MVCC interface. The communication with the producers involved in the tests took place via e-mail when it was necessary to require production curves or some plants disconnection for the test execution.
Measurements are set-up to capture the output of the said functions. Upon completion of the test, the measurements are compared with the original requirements.
Four types of tests have been performed :
The DSO as an Active Demand product validator: the DSO receives programs of AD products, which aggregators traded in the market or directly with other energy market players, to be validated. These programs should be checked by the DSO by means of the validation algorithms, and the results of the validation (accepted or curtailed programs) should be published in the MVCC interface. Then, the AD products will be activated by means of emulation and the real distribution network operation will be observed.
The DSO as an AD product buyer: the DSO buys AD products in order to solve some expected network constraints. A network constraint is simulated by changing the thermal limit of a MV cable in the network under test. The power flow variation to solve this network problem is calculated preliminarily and the amount has to be equal to/larger than the AD bid that the DSO has to buy on the market. Then, the DSO sends a request to the market and receives a response. In case of positive reply, the AD product is activated by means of the storage system. The observed real network operation has to be compliant with the DSO forecast (the current through the interested cable has to be lower than the modified thermal limit).
Localized AD products developed to limit the power flow towards the transmission system: the target of the test is to limit the power flow rising to the transmission network through the primary substation using localized AD products. In this case the DSO is configured as a Distribution network manager (the DSO verifies if any network problems or congestions occur, and verifies the technical possibility to solve the problems with an active demand product) or Active Demand product buyer, buying from the market the most suitable active demand product from an aggregation function.
Test of the MVCC algorithm reaction to network changes: the aim of this test is to verify the algorithms reaction to the relevant network structure modification. This test was carried out on purpose exploiting a “big” network configuration variation. In fact, this test was performed while the Carovilli operative center was disconnected due to scheduled maintenance works.
 The Italian test site location is located at Carpinone (Molise Region, Centre of Italy), where the grid has over capacity which enables tests to be performed without endangering the quality and availability of supply.
 See Deliverable 6.1 for the description of tests site and test programs and Deliverable 6.2 for the results