Additionally, the use of time-series database permits the deployment of analysis about transitory events that occur in the network. These data constitute the basis for further energy services, which could be added in the FISMEP platform to improve the management of the MVDC research grid.
FIWARE framework is used as a central system to manage and store the data as this framework contains a list of open-source services to facilitate and accelerate development of smart internet-related application in various domains. The developed automation architecture relies on Context Broker (CB) Orion, the core Generic Enabler (GE) in the FIWARE catalogue. As current data are stored in CB Orion, but do not provide time related and historical information necessary for advanced applications, the software component CrateDB is implemented to stow electrical measurements from the grid. Moreover, FIWARE offers IoT Agent GE to establish communication among IoT devices and the cloud platform, based on predefined standard protocols; in the presented implementation, IoT Agent is used to interface the IEDs, installed in the electrical MV network, connected to transducers and converters sensors.
Virtualized Service Restoration of Distribution Grids
As a second use case, aiming at enhancing the self-healing capability of distribution grids in case of fault occurrence, a Service Restoration (SR) solution has been developed and implemented in the FISMEP platform. The SR is based on an innovative Rule-Based Optimization (RBO) algorithm, specifically developed as the first countermeasure in critical conditions, as High Impact Low Probability (HILP) events. The SR has been developed as middleware, hence it is independent of grid structure or specific electrical parameters. Moreover, it is integrated into the FISMEP platform with the FIWARE components to deploy an automated cloud-based SR. To test the SR, different MV AC and Hybrid AC-DC distribution grids, in several fault conditions, are emulated in the Real-Time Digital Simulator (RTDS). Through the Gigabit Transceiver Network (GTNET) card of RTDS the grid data could be sent/published into a communication network via its Ethernet port thus emulating the protection and metering devices.