Demonstration of

coordinated ancillary services covering different voltage levels and the integration in future markets

Innovation Cell Finland

Sundom Smart Grid (SSG) in Vaasa, Finland is a smart grid pilot of ABB Oy, Vaasan Sähkö (local DSO), Elisa (telecommunication company, previously Anvia) and University of Vaasa. SSG serves as Finnish IC in the DeCAS project. IC Finland concentrates on research and development of future active network management (ANM) schemes and related technical flexibility service market structures as well as on development of future-proof islanding detection functionalities.

Technical Requirements

IC Finland, ABB in cooperation with University of Vaasa, utilizes very accurate measurement data from multiple points and control of available DG units (Wind turbine 3.6 MW, PV unit 33 kW, see figure below) on the research and development of different new centralized/decentralized combined islanding detection schemes and local (DSO) ANM schemes which can fulfil multiple targets simultaneously during grid connected operation.

In addition, coupling and potential mutual effects between ANM schemes / targets of different voltage levels (MV/LV) or levels of FlexZones and between local (DSO) and system-wide (TSO) flexibility service schemes will be studied. Studies are expected to show, for example, a) what is the effect of LV network ANM methods on MV network ANM methods and vice versa, b) what is the effect of local (DSO) MV network ANM methods (i.e. Qflow & U and Pflow -management,) on available system-wide (TSO) flexibilities/flexibility forecasts (from that particular DSO network) and c) how possible system-wide (TSO) flexibility services like P/f -control may effect on local (DSO) level for example on congestion management (voltage and thermal limits) and on available local (DSO) flexibilities for primary and secondary local ANM schemes. Different scenarios related to above issues will be studied by simulations with larger amount of different available flexibilities connected in MV and LV network than today.

Stakeholder Adoption

The realisation of Qflow & U- ANM scheme in IC Finland requires coordinated reactive power control of MV and LV network connected DG units and their owners’ willingness to participate. These ANM schemes could be realized alternatively in DSO SCADA or by decentralized, hierarchical and coordinated management solutions at HV/MV, MV/LV substations with management units called FlexZone units (FZUs) including also future-proof protection and islanding detection functionalities. In the future, one alternative could be that some of the less critical / high-speed communication dependent DSO FZU functionalities like ANM schemes would be located in cloud servers.

Market Requirements

 IC Finland studies also possible future retail and technical flexibility (ancillary) service market structures in Europe and market models for future ANM schemes and effects to different parties considering coupling/potential challenges between local (DSO) and system-wide (TSO) needs.