Dynamic Virtual Power Plant: A New Concept for Grid Integration of Renewable Energy Sources

TL;DR

This paper introduces the concept of Dynamic Virtual Power Plant (DVPP), which integrates dynamic control, economic dispatch, and grid participation of renewable energy sources to enhance grid stability and RES integration.

Contribution

It proposes a comprehensive framework for a Dynamic VPP that considers local, global, and economic aspects, advancing beyond traditional static VPP models.

Findings

Defines the DVPP concept and control methodologies

Addresses dynamic participation of RES in grid services

Enhances RES integration with stability and economic optimization

Abstract

The notion of Virtual Power Plant (VPP) has been used many times in last years in power systems and for several reasons. As a general trend, the behavior of a classic synchronous generator is to be emulated for a class of conventional grid components like, e.g., renewable generators or/and power electronic units. Most of the times production of these units is of interest, as it is the case for the new AGC scheme of Spain which, from this point of view, looks like a VPP. However, dynamic aspects are of high importance, especially for increasing the actual rate of penetration of Renewable Energy Sources (RES). Indeed, to go above the actual rate of RES penetration, one should deal with full participation of RES to grid services. For that, we propose here a new concept called Dynamic VPP (DVPP) which fully integrates the dynamic aspects at all levels: locally (for each RES generator), globally (for grid ancillary services and interaction with other neighbor elements of the grid) and economically (for internal optimal dispatch and participation to electricity markets). A DVPP is a set of RES along with a set of control and operation procedures. This means methodologies for: choosing the participating RES, optimal and continuous operation as a whole (especially in case of loss of natural resources - e.g., wind, sun - on a part of the DVPP), regulation (in the dynamic sense) to ensure local objectives for each generator, participation to ancillary services of the DVPP as a unit and to diminish negative effects of interaction with neighbor dynamics elements of the power system, integration in both actual power systems scenarios (with mixed classic and power electronics based generation) and future ones with high degree of RES penetration.