Abstract
The increasing share of volatile, renewable energies, such as wind and solar power, leads to challenges in the stabilization of power grids and requires more flexibility in future energy systems. This article addresses the flexibilization of the consumer side and presents a simulation-based method for the technical and economic investigation of energy flexibility measures in industrial steam supply systems. The marketing of three different energy-flexibility measures—bivalence, inherent energy storage and adjusting process parameters—both at the spot market and at the balancing power market, are investigated from a technical as well as an economic point of view. Furthermore, the simulation-based methodology also considers pressure and temperature fluctuation induced by energy-flexibility measures. First, different energy-flexibility measures for industrial steam supply systems are introduced. Then, the physical modeling of the steam generation, distribution, and consumption as well as measure-specific control strategies will be discussed. Finally, the methodology is applied to a steam supply system of a chemical company. It is shown that the investigated industrial steam supply system shows energy-flexibility potentials up to 10 MW at peak and an annual average of 5.6 MW, which highly depend on consumer behavior and flexibility requirements.
Highlights
The growing share of renewable energy generation based on fluctuating wind and solar energy sources poses an increasing challenge for the stability of the electrical power grid in Germany
To achieve a 100% renewable energy system, energy storage capacities and power grids must be expanded, and consumers must be enabled to adjust their demand in response to external signals or internal goals [5]
This paper presents a method to quantify the energy-flexibility potential of industrial steam supply systems, without backpressure and extraction condensing steam turbines, that can be used for the electrical power grid using dynamic simulation
Summary
The growing share of renewable energy generation based on fluctuating wind and solar energy sources poses an increasing challenge for the stability of the electrical power grid in Germany. This paper presents a method to quantify the energy-flexibility potential of industrial steam supply systems, without backpressure and extraction condensing steam turbines, that can be used for the electrical power grid using dynamic simulation. For this purpose, the relevant preliminary work in this subject area is summarized
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