CONCEPT & OBJECTIVES

The POSYTYF project intends to support the further integration of Renewable Energy Sources (RES) into the power system by developing the Dynamic Virtual Power Plant concept (DVPP).
This DVPP aims to aggregate in a portfolio some renewable sources of both dispatchable and non-dispatchable natures, thus enabling an optimal internal redispatch of resources. Compared to other already proposed Virtual Power Plants (VPP), the DVPP concept will jointly address:

• the static power dispatch at single VPP level,
• the dynamic coordination of several VPPs to provide ancillary services to the system
• the attainment of an economic optimum.

A multidisciplinary approach combining expertise on power systems, power electronics, automatic control and RES will allow to:

• cover both the transmission and distribution levels
• investigate centralized vs decentralized control concepts for single device and VPP management
• address the specific stability issues associated to low inertia systems.

The project will explore two complementary routes: develop solutions directly implementable in today’s power system to support network stability; and investigate future electricity networks with massive RES penetration to formulate technical and regulatory recommendations for tomorrow.

POSYTYF intends to:

• Determine optimality criteria to define the perimeter/portfolio of DVPP both for long term and real-time application
• Develop new controllers to allow RES to contribute to ancillary services ultimately enabling system stability
• Test the developed solutions by simulation and Hardware in the Loop (HiL) on realistic scenarios to validate the feasibility of the concept
• Define new business cases for the optimal operation and configuration of DVPP
• Propose regulatory recommendations to enable DVPP development and operation in conjunction with the generators run in a classic way
• Assess economic competitiveness of the DVPP compared with solutions combining variable RE with electrochemical storage
• Propose new stability definitions and methodologies for stability analysis and assessment

The expected impacts are to:

• Enable the increase of the global (dispatchable + non dispatchable) RES share within the European energy system
• Ensure grid security thanks to real-time optimal redispatch of DVPP resources
• Open participation of RES to ancillary services
• Facilitate adoption of the multidisciplinary DVPP concept thanks to specific dissemination interfacing automatic control, power systems and power electronics disciplines.