Reference Project

Research Project INZELL

A 2.5 MW battery storage system from INTILION will enable the industrial cell at the Max Bögl company to be island-capable, which has the goal of supporting the grid and providing system services using renewable energies. By integrating the 2.5 MW battery storage system, it will be possible to reduce power peaks by up to 25 % in the future, as well as to synchronise annual consumption and annual generation of renewable energies.

Project Description

The overarching project plan is the stable operation of the Max Bögl industrial grid as an island grid. With the elaborated concept of an island grid operation, recommendations for action are to be developed as to how industrial cells with a hybrid structure of procurement and generation plants should be treated in the future with regard to the grid connection guidelines and how their potentials can be used in the best possible way for the system security of the overall system. All project participants want to investigate how different energy generation plants, storage facilities and load management systems interact optimally. On the one hand, the island grid operation of an industrial cell of the Max Bögl group of companies is to be made possible in the event of supply interruptions. On the other hand, it is intended to contribute to ensuring the stability of the public power grid more cost-effectively. The research project, funded by the Federal Ministry for Economic Affairs and Energy, has a project duration of three years.

Added value for the customer

The customer has an annual consumption of 26 GWh, which roughly corresponds to the demand of a city with approximately 30,000 inhabitants. The peak load is 6.3 MW, which can be reduced by up to 25 % in the future by integrating the 2.5 MW battery storage. The synchronisation of the annual generation, which consists of wind turbines (9.6 MW), rooftop photovoltaic systems (2.5 MW) and a CHP steam engine (0.4 MW) and is to be supplemented in the future by a floating PV park (1.5 MW), as well as an open-space PV system (6 MW), represents a particular challenge in order to realise the company’s goal of climate neutrality of 96% by 2026.

The battery storage system plays a central role as a grid builder and for the provision of synthetic instantaneous reserve for the intended island grid operation of the industrial cell. In addition, INTILION will develop peak load management, black start capability and island grid operation by 2023.

In 2026, the expansion of the storage facility by 6MW is planned in order to ensure a 96% CO2 neutral self-sufficiency. This can be implemented as planned thanks to the scalable approach of the storage systems.

Subprojects and Research Objectives of the Project Partners

Ostbayerische Technische Hochschule Regensburg: Conceptual design and implementation of grid parallel and island grid operation with a focus on plant deployment planning and grid manager
Clausthal University of Technology: Highly dynamic stability analysis of transient processes in island grid operation
Technical University of Munich: Conception and implementation of island grid operation with decentralised generation plants and resynchronisation of an island grid with a focus on dynamic stability
Centre for Applied Energy Research Bavaria e.V.: Measurements, analysis and evaluation
Max Bögl Wind AG: Conducting field tests, adapting the operational infrastructure and elaborating potential system services
Intilion: Development of control structures and algorithms of a battery storage system for peak load management, black start capability and island grid operation