This WP focuses on the design, preparation and execution of the proof of concept field trial. The purpose is to study in practice the benefits resulting from the concepts developed in WP3 and WP4. The main objective of this WP is to physically setup, run and validate operation of large scale field trial. Deployment and validation of the use case scenarios is defined, and applications deployed and verified within DEG, e-car charging points, substations, telecom mobile base stations, industrial and home environments. SUNSEED field trial is proving ground for in-depth studies and evaluations of proposed communications solutions (based on existing and greenfield infrastructures), as well as energy flow measurements, monitoring
and control used by management software, GIS and analytics tools.
Smart grid main objective as seen from DSO perspective is to optimise distribution network based on measurements. Most important aspect is voltage profile and maximum power flow analysis that serves as input for defining boundaries for future DEG connection to distribution network and power system optimization based on data gathered from smart meters.
To study voltage profile we need load and voltage measurements on MV and LV network covering all prosumers. To study voltage profile, we need voltage measurements in MV and LV network. IEC 50160 defines ± 10 % voltage band for consumers on LV node. Appropriate locations and required smart meter capabilities will be defined during network study in WP2 specifying appropriate smart meter installation plan based on network requirements. The basis for the analysis of voltage profile is voltage rise due to generation in prosumer nodes. DEG with their production is using part of available voltage band. To study DEG impacts on consumers MV and LV energy network are needed. Voltage profile study is directly connected to potential technical VPP implementation where fast regulation loops are needed.
Further, if we want to investigate LV network, we need MV/LV substation measurements (on MV or LV side) and consumer measurements. With time synchronized measurements we could observe LV network in real time. Field trial locations in WP2 will be selected based criteria like: Current impact of DEG on distribution network voltage profile that will enable us to study possibilities for future DEG connections; DEG concentration and diversity on distribution MV or LV network feeder.
Advanced energy measurement and control node with smart meters and communication infrastructure are primary sources of setup. Data periods are short (from 1 sec – 1 min) and its dynamics (rate of change), communication mechanism with SUNSEED backend database storage (e.g. fixed line, non-stop mobile packet data connection, aggregation of data at location node or energy gateway and sending data in bursts). Installation of MV/LV transformer station measurements not owned by EP is most difficult to cover due to access rights on the end user owned premises.
Achievements of this WP will be used as a source of data into WP2, WP3, WP4, WP6.
Key performance indicators investigated on SUNSEED project
- Data traffic characteristics and service level parameters of WAMS nodes (e.g. density, density per mobile base station, density per substation region, time distribution, packet latency-jitter-loss-round trip) over wired (PLC, xDSL, fibre) and wireless channels (LTE, HSPA, WiFi).
- Communication network (converged, DSO only, telecom only) availability parameters (e.g. up time, down time, distribution by region) over wired (PLC, xDSL, fibre) and wireless channels (LTE, HSPA, WiFi) in last mile, FAN/NAN, WAN, end-2-end.
- Reliability and availability of the existing communication infrastructure for smart grid vs. converged solutions, with parameters (e.g. resilience to node and link failures, network attacks and jamming probability for communication link failure, data outage probability).
- Energy flow measurements within energy grid graph of field trial setup. Measurements are done per each vertex on graph, to enable calculation from DEG node to local consuming nodes (edges). These measurements will directly show losses in distribution network.
- Energy network reliability parameters on energy graph (e.g. System Average Interruption Duration Index (SAIDI), extended SAIDI, Customer Average Interruption Duration Index (CAIDI), extended CAIDI, Momentary Average Interruption Frequency Index (MAIFI)) and at customer with installed DEG node.
- Investment costs for smart grid communication network (e.g. overlaid, converged, DSO only, telecom only), i.e. Capex (e.g. equipment, deployment, spectrum licenses) and operational costs, i.e. Opex (e.g. design, maintenance, network operation, customer support cost) and thus accumulated savings.
- Cost parameters (e.g. per bit per WAMS node, per bit per substation, per bit per DEG node) of communication network for smart grid (converged, DSO only, telecom only).