Authors:
Yayun Zhou
;
Harald Held
;
Wolfram Klein
;
Kurt Majewski
;
Rainer Speh
;
Philipp Emanuel Stelzig
and
Christoph Wincheringer
Affiliation:
Siemens AG, Germany
Keyword(s):
SoftGrid, Renewable Energy, Decentralized System, Optimization, Automation, Two-level Control.
Related
Ontology
Subjects/Areas/Topics:
Energy and Economy
;
Smart Grids
;
Smart Grids and Renewable Technologies
;
Smart Grids Modeling
Abstract:
In this paper, a novel power grid solution “SoftGrid” is proposed, which is a decentralized power system with two-level control architecture. The basic unit of this grid solution is a so-called SoftGrid-Adapter (SGA), which controls generators, consumers as well as energy storage devices under the guidance of an optimization model. The energy transmission among SGAs is supervised by a SoftGrid-Dispatcher (SGD), which balances energy among SGAs. Using the proposed SoftGrid two-level control architecture, one can build up a local grid from scratch. It is especially well-suited to be applied in remote areas where no commercial power grid exists. Hence it is also viewed as a green field approach to a future smart grid. The concept of SoftGrid is verified through system modeling and simulation under different scenarios. The simulation results show that SoftGrid is a power grid solution with both flexibility and reliability.