Dynamic feed-in tariffs with reduced complexity and their impact on the optimal operation of a combined heat and power plant

Selinger-Lutz, Oliver; Groß, Arne; Wille-Haussmann, Bernhard; Wittwer, Christof

doi:10.1016/j.ijepes.2019.105770

Cited by 5 publications

(3 citation statements)

References 32 publications

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“…Storage systems are categorized as electrical (e.g., batteries), active thermal, or passive thermal storage. These systems can be utilized as stand-alone storage systems or coupled with other technologies, such as heat pumps and combined heat and power systems (CHPs) [31,32]. Within the electrical storage category, battery storage is usually considered to be a flexibility asset with a time step of several hours, during which it can shift energy consumption from high-tariff to low-tariff periods or reduce the peak demand.…”

Section: Energy Flexibilitymentioning

confidence: 99%

Quantification of Energy Flexibility and Survivability of All-Electric Buildings with Cost-Effective Battery Size: Methodology and Indexes

Homaei

Hamdy

2021

Energies

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All-electric buildings are playing an important role in the electrification plan towards energy-neutral smart cities. Batteries are key components in all-electric buildings that can help the demand-side energy management as a flexibility asset and improve the building survivability in the case of power outages as an active survivability asset. This paper introduces a novel methodology and indexes for determining cost-effective battery sizes. It also explores the possible trade-off between energy flexibility and the survivability of all-electric buildings. The introduced methodology uses IDA-ICE 4.8 as a building performance simulation tool and MATLAB® 2017 as a post-processing calculation tool for quantifying building energy flexibility and survivability indexes. The proposed methodology is applied to a case study of a Norwegian single-family house, where 10 competitive designs, 16 uncertainty scenarios, and 3 dynamic pricing tariffs suggested by the Norwegian regulators are investigated. The methodology provides informative support for different stakeholders to compare various building designs and dynamic pricing tariffs from the flexibility and survivability points of view. Overall, the results indicate that larger cost-effective batteries usually have higher active survivability and lower energy flexibility from cost- effectiveness perspective. For instance, when the time of use tariff is applied, the cost-effective battery size varies between 40 and 65 kWh (daily storage). This is associated with a cost-effective flexibility index of 0.4–0.55%/kWh and an active survivability index of 63–80%.

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Section: Energy Flexibilitymentioning

confidence: 99%

Quantification of Energy Flexibility and Survivability of All-Electric Buildings with Cost-Effective Battery Size: Methodology and Indexes

Homaei

Hamdy

2021

Energies

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“…The tariff system in (10) is based on a simple arithmetic operations of rational numbers. This is less computationally expensive than current approaches based on optimization [16][17][18][19][20][21], which are numerically implemented with iterative algorithms normally based on repetitive inverse matrix computations. In this sense, the proposed tariff system results in shorter processing time than those based on optimization programs.…”

Section: Formulation Of the Tariff Systemmentioning

confidence: 99%

“…Although the cost recovery of the PV and storage from the customer size is considered, the recovery of network cost is not represented, as the formulation focus is on feed in tariff definition. In [20], a tariff structure for each day is calculated by formulating and solving a binary linear optimization problem, as well as [21] that proposes an optimization framework to represent the tariff system in order to maximize social welfare. As it can be seen, the problem of tariff systems under the penetration of DG is clear, but the various approaches in the literature overlook the need for simplicity coming from the regulatory need of transparency and customer responsiveness.…”

Section: Introductionmentioning

confidence: 99%

A Simple Distribution Energy Tariff under the Penetration of DG

et al. 2020

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In a scenario where distributed generation infrastructure is increasing, the impact of that integration on electricity tariffs has captured particular attention. As the distribution sector is mainly regulated, tariff systems are defined by the authority. Then, tariffs must be simple, so the methodology, criteria, and procedures can be made public to ensure transparency and responsiveness of the customers to price signals. In the aim of simplicity, tariff systems in current practices mostly consist of volumetric charges. Hence, the reduction of the energy purchased from the distribution network jeopardizes the ability of the tariff system to ensure recovery of the total regulated costs. Although various works have captured this concern, most proposals present significant mathematical complexity, contrasting with the simplicity of current practices and limiting its regulatory applicability. This work develops a tariff system that captures the basic elements of distribution systems, trying to maintain the simplicity of current practices, ensuring recovery of the total regulated cost under the penetration of distributed generation, and incentivizing through price signals operational efficiency. A simulation will be presented to discuss numerical results.

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An enhanced approach-based grid flexibility analysis for combined heat and power systems with variable renewable energy systems

Kalaivani

Umasankar²,

Badachi³

et al. 2023

Energy & Environment

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An enhanced approach-based grid flexibility analysis for combined heat and power (CHP) systems with variable renewable energy systems is proposed in this article. The proposed system is the combined execution of White Shark Optimizer (WSO) and Pelican Optimization Algorithm (POA). The WSO approach updating behavior is enhanced by the POA approach hence named as enhanced WSO technique. The main purpose of the proposed technique is to provide the optimal grid flexibility by utilizing the CHP systems. Utilizing the proposed method, the demand for the sources is predicted in the year 2030. The proposed approach considers the optimization problem as a reduction of cost and analyzes the flexibility in both upward and downward directions. The sources like photovoltaic, wind turbine, hydropower plants, nuclear, and coal demand power are analyzed. Based on the seasons, the proposed approach analyzed the system flexibility. Finally, the performance of the proposed method is simulated in MATLAB/Simulink platform and the performance is compared to the various existing methods.

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Dynamic feed-in tariffs with reduced complexity and their impact on the optimal operation of a combined heat and power plant

Cited by 5 publications

References 32 publications

Quantification of Energy Flexibility and Survivability of All-Electric Buildings with Cost-Effective Battery Size: Methodology and Indexes

Quantification of Energy Flexibility and Survivability of All-Electric Buildings with Cost-Effective Battery Size: Methodology and Indexes

A Simple Distribution Energy Tariff under the Penetration of DG

An enhanced approach-based grid flexibility analysis for combined heat and power systems with variable renewable energy systems

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