Coordination Mechanism for PV Battery Systems with Local Optimizing Energy Management

Manuel Kersic, Thilo Bocklisch, Michael Böttiger and Lisa Gerlach
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Manuel Kersic: Belectric GmbH, Industriestraße 65, D-01129 Dresden, Germany
Thilo Bocklisch: Chair of Energy Storage Systems, Institute of Power Engineering, Technische Universität Dresden, Helmholtzstraße 9, D-01062 Dresden, Germany
Michael Böttiger: Chair of Energy Storage Systems, Institute of Power Engineering, Technische Universität Dresden, Helmholtzstraße 9, D-01062 Dresden, Germany
Lisa Gerlach: Chair of Energy Storage Systems, Institute of Power Engineering, Technische Universität Dresden, Helmholtzstraße 9, D-01062 Dresden, Germany

Energies, 2020, vol. 13, issue 3, 1-25

Abstract: This publication presents a coordination mechanism for neighboring photovoltaic (PV) battery systems with local optimizing energy management (EM). The aim of this coordination is a high degree of self-sufficiency for the neighborhood while maintaining a high individual degree of self-sufficiency and relieving the grid. A financial incentive to increase the energy exchanged within the neighborhood is introduced. The local EM of the individual PV battery system uses model predictive control based on deterministic dynamic programming in order to minimize the individual economic costs and extreme grid power values. By using a coordination algorithm involving a central information processing unit, the neighboring PV battery systems are given information about the sum of the planned consumption and feed-in power profiles of the neighborhood, as well as the neighborhood tariffs. Based on these data, the PV battery systems successively optimize the operation of their batteries until either convergence or a maximum count of iterations is achieved. The operating principle of the distributed EM concept with coordination is demonstrated through a simulation of a residential neighborhood comprising eight households with different load profiles and varying PV peak powers and battery capacities. Its performance is compared with three EM concepts: two distributed concepts without coordination and another one with central optimizing EM representing ideal coordination. The resulting power flow distributions are analyzed, and the benefits and weaknesses of the developed coordination mechanism are discussed based on a number of evaluation criteria.

Keywords: distributed control; coordination; local trade; microgrid; energy management; lithium-ion battery; photovoltaic; optimization; model predictive control; dynamic programming (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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