Investitionsrechnung und Wirtschaftlichkeitsberechnung für elektrische Anlagen

Heuck, Klaus; Dettmann, Klaus-Dieter; Schulz, Detlef

doi:10.1007/978-3-8348-9761-9_13

Cited by 3 publications

(3 citation statements)

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“…The goal of companies usually is to generate as much profit as possible at low cost [29]. From a business management point of view, it is important to cover both the company's energy requirements and to achieve this at the lowest possible cost [30].…”

Section: Economic Evaluationmentioning

confidence: 99%

Planning, Optimisation and Evaluation of Small Power-to-Gas-to-Power Systems: Case Study of a German Dairy

Schmeling

Buchholz²,

Heineke³

et al. 2022

Sustainability

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In the course of the energy transition, distributed, hybrid energy systems, such as the combination of photovoltaic (PV) and battery storages, is increasingly being used for economic and ecological reasons. However, renewable electricity generation is highly volatile, and storage capacity is usually limited. Nowadays, a new storage component is emerging: the power-to-gas-to-power (PtGtP) technology, which is able to store electricity in the form of hydrogen even over longer periods of time. Although this technology is technically well understood and developed, there are hardly any evaluations and feasibility studies of its widespread integration into current distributed energy systems under realistic legal and economic market conditions. In order to be able to give such an assessment, we develop a methodology and model that optimises the sizing and operation of a PtGtP system as part of a hybrid energy system under current German market conditions. The evaluation is based on a multi-criteria approach optimising for both costs and CO2 emissions. For this purpose, a brute-force-based optimal design approach is used to determine optimal system sizes, combined with the energy system simulation tool oemof.solph. In order to gain further insights into this technology and its future prospects, a sensitivity analysis is carried out. The methodology is used to examine the case study of a German dairy and shows that PtGtP is not yet profitable but promising.

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Section: Economic Evaluationmentioning

confidence: 99%

Planning, Optimisation and Evaluation of Small Power-to-Gas-to-Power Systems: Case Study of a German Dairy

Schmeling

Buchholz²,

Heineke³

et al. 2022

Sustainability

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show abstract

“…For the calculation of the annual costs, the useful lifespan of the lines still has to be determined. For underground cables, a lifespan of 40 years is generally assumed [22], and the normal operating life in accordance with the electricity grid charge ordinance is also 40 years [23].…”

Section: Grid Reinforcement Costsmentioning

confidence: 99%

Storage Placement and Sizing in a Distribution Grid with High PV Generation

Matthiss

Momenifarahani²,

Binder

2021

Energies

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With the increasing penetration of renewable resources into the low-voltage distribution grid, the demand for alternatives to grid reinforcement measures has risen. One possible solution is the use of battery systems to balance the power flow at crucial locations in the grid. Hereby, the optimal location and size of the system have to be determined in regard to investment and its effect on grid stability. In this paper, the optimal placement and sizing of battery storage systems for grid stabilization in a small low-voltage distribution grid in southern Germany with high PV penetration are investigated and compared to a grid heuristic reinforcement strategy.

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“…It is assumed that each MV distribution grid is connected to the HV level via transformers at only one substation. This assumption reflects the status quo in Germany and implies that during normal (n-0) operation, tie points between neighboring MV grids are operated as open switches [3,[61][62][63]. Possible changes of the HV feeding situation by closing normally open tie switches are not considered.…”

Section: Data Modelmentioning

confidence: 99%

Integrated Techno-Economic Power System Planning of Transmission and Distribution Grids

et al. 2019

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The energy transition towards renewable and more distributed power production triggers the need for grid and storage expansion on all voltage levels. Today’s power system planning focuses on certain voltage levels or spatial resolutions. In this work we present an open source software tool eGo which is able to optimize grid and storage expansion throughout all voltage levels in a developed top-down approach. Operation and investment costs are minimized by applying a multi-period linear optimal power flow considering the grid infrastructure of the extra-high and high-voltage (380 to 110 kV) level. Hence, the common differentiation of transmission and distribution grid is partly dissolved, integrating the high-voltage level into the optimization problem. Consecutively, optimized curtailment and storage units are allocated in the medium voltage grid in order to lower medium and low voltage grid expansion needs, that are consequently determined. Here, heuristic optimization methods using the non-linear power flow were developed. Applying the tool on future scenarios we derived cost-efficient grid and storage expansion for all voltage levels in Germany. Due to the integrated approach, storage expansion and curtailment can significantly lower grid expansion costs in medium and low voltage grids and at the same time serve the optimal functioning of the overall system. Nevertheless, the cost-reducing effect for the whole of Germany was marginal. Instead, the consideration of realistic, spatially differentiated time series led to substantial overall savings.

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Investitionsrechnung und Wirtschaftlichkeitsberechnung für elektrische Anlagen

Cited by 3 publications

References 0 publications

Planning, Optimisation and Evaluation of Small Power-to-Gas-to-Power Systems: Case Study of a German Dairy

Planning, Optimisation and Evaluation of Small Power-to-Gas-to-Power Systems: Case Study of a German Dairy

Storage Placement and Sizing in a Distribution Grid with High PV Generation

Integrated Techno-Economic Power System Planning of Transmission and Distribution Grids

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