D6.1 REACT system reference architecture

Executive Summary This deliverable defines the reference architecture of the REACT (REACT, 2019) platform, according to the requirements identified in Task 1.4 and defined in deliverable D1.4 (REACT D1.4, 2020). The architecture is based on open standards, and it is designed as a cloud-based platform, service oriented and event driven. The architecture middleware is designed with an open integration framework, the MQTT broker, as the main core service for the integration of information coming from assets installed at the field level, EMS cloud systems, external systems, and services. To ensure interoperability between devices at field level and middleware platform an application based on open framework OpenMUC will be developed to allow integration with platform for those devices that do not provide MQTT connectivity protocol. A common messaging format will be defined, the CDM (Canonical Data Model), to provide a common language for all the devices and services. The CDM defines the specification of data format that shall be used for messages sent from smart meters and other devices to the REACT cloud platform. The data format payload is a JSON message with the required fields. The CDM specification also defines the topic structure and the sequence flow for the control actions. Further details of this CDM specification will be provided in the deliverable D6.2 written in the context of Task 6.2. The REACT system reference architecture defines the application services and the user interfaces. Services integration is based on microservices approach following the open standard HTTP RESTful API. The web dashboard and mobile app provide the interfaces to enable the users of the platform to monitor and interact with the data stored in the platform, historical and real time data, analytic outcomes, notifications, and recommendations