Small Hydro Power Plants Operating As Backup Source In Local Island

Bělík, Milan; Noháčová, Lucie

doi:10.1109/epe.2019.8777948

Cited by 4 publications

(5 citation statements)

References 1 publication

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“…The main task of the correlation-regression analysis is to define and assess the most significant quantitative characteristics of particular relations between particular processes and phenomena. The Pearson, Spearman, and Kendall correlation coefficients are to be used for estimating this influence [37].…”

Section: Investigation Of Daily Electricity Generation Ress During Th...mentioning

confidence: 99%

“…), then the Pearson correlation coefficient does not properly reflect the relationships between variables. Checking the normality of the data distribution and analysis of the scattergram allowed us to conclude that other criteria could be applied, such as Spearman's rank coefficient [32,37].…”

Section: Correlation-regression Analysis Of Res Generationmentioning

confidence: 99%

“…All inputs are represented by the indexes of n objects understood on different grounds. Assessing the consistency or relationship between the structure of the indexing describes investigated objects in the sign x (k) and the ordering of the same objects by another sign x (j) (Table 2) [35,[37][38][39].…”

Section: Correlation-regression Analysis Of Res Generationmentioning

confidence: 99%

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Implementation of Digital Twin for Increasing Efficiency of Renewable Energy Sources

Bělík

Rubanenko

2023

Energies

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This paper presents an analysis of the instability of the electricity generation of renewable energy sources (RESs), specifically Digital Twins of RESs. The first part deals with the analysis of RES electricity generation around the world and Ukraine. The following chapter describes features of functioning power grids in modern conditions in Ukraine and ways to ensure the balance reliability in the power system for conditions of high-grade RES integration. The rapid increase in electricity generation RESs causes control problems of distributed power supply in the power grid. A mathematical model of the parameter controls in normal mode electric power systems for conditions with high integration of RESs is proposed in the second part. The study investigates components of the optimality criterion at the control of normal mode parameters of the electric power system with RESs. In general, digital transformation helps decarbonize the energy supply, decrease dependency on fossil fuels, and integrate renewables into power systems. A model Digital Twin (DT) of a photovoltaic system, or an exact 3D visualization, analyzing the accumulator system depending on load and generation, are presented. The problems of Digital Twin are very widely discussed, but many papers and studies are general without any practical implementations. The main part of this paper focuses on research and deals with daily electricity generation from different kinds of RESs, namely mini-hydropower stations, photovoltaic power stations, and wind power stations. Measured data of electricity generation from photovoltaic power plants, wind power plants, and mini-hydropower plants and obtained meteorological factors were used for the calculation of Spearman’s, Kendall’s, and Pearson’s correlation rank coefficients. The main contribution of this research is to determine the main metrological factors for each kind of studied RES. In the future, it will help to decide the task of forecasting power generation more presciently. Additionally, the presented model of DT RESs allows the installation and operation of grids with higher efficiency, because it can help to predict all influences, from shading up to the optimization of the battery storage system.

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Section: Investigation Of Daily Electricity Generation Ress During Th...mentioning

confidence: 99%

Section: Correlation-regression Analysis Of Res Generationmentioning

confidence: 99%

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Implementation of Digital Twin for Increasing Efficiency of Renewable Energy Sources

Bělík

Rubanenko

2023

Energies

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“…In this case, the total cost of C ∑ to compensate for the unevenness of the RES generation schedule by power redundancy is minimized. The task of optimizing the cost of redundancy is set as [12,13]:…”

Section: The Power Balance In the Power System Taking Into Account Re...mentioning

confidence: 99%

“…In addition, "Ukrenergo" from June 2022 began to pay RES producers located out of the occupied territories and generating electricity in Ukraine (made only 21% of what was required). The implementation of RES in power grids, such as photovoltaic and wind power plants, can influence power balance [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Energy Consumption Optimisation of Emergency Shelters for Ukrainian War Refugees

Rubanenko¹

2023

RE&PQJ

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The paper deals with optimisation of energy consumption of emergency shelters (tiny houses) for Ukrainian War refugees. Significant amount of Ukrainian citizens lost their homes or were forced to leave their properties. These refugees overcrowd the rest of the country and bring huge problems with accommodation and inclusion into existing communities. Accommodation in schools or gyms is just temporary solution with another unpleasant influence on the society. It is necessary to construct new quarters or communities using cheap but energy very efficient constructions. Several variants of tiny house with various equipment features and living or comfort standard are being discussed and compared. These studies are based on real project realised between Ukrainian non-government organisation Synergy and German development agency weChange. Main goal of this research is consumption optimisation of not particular single shelter but rather of large community of shelters containing hundreds or thousands units called shelter city. The tiny houses itself are designed according to passive solar systems standards and with accent to minimal purchasing costs and operational energy needs. Second important requirement is strong optimisation of shelter’s load chart to significantly decrease influence of the shelter city to power grid connection point. Both tasks are important because the Russian attack against Ukraine brings new tasks for power engineering sector. Electricity production, transmission, distribution and consumption must face new challenges. Nowadays more than 35 % of critical infrastructure is being damaged. Remaining infrastructure would be more overloaded, if new customers are connected without energy needs optimisation.

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Design and Control of 11-Level Modular Multilevel Converter with Dual Purpose Inverter for Grid Connected Photovoltaic System

Behera

Sasmal

Behera

et al. 2022

2022 IEEE 8th International Conference on Energy Smart Systems (ESS)

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Small Hydro Power Plants Operating As Backup Source In Local Island

Cited by 4 publications

References 1 publication

Implementation of Digital Twin for Increasing Efficiency of Renewable Energy Sources

Implementation of Digital Twin for Increasing Efficiency of Renewable Energy Sources

Energy Consumption Optimisation of Emergency Shelters for Ukrainian War Refugees

Design and Control of 11-Level Modular Multilevel Converter with Dual Purpose Inverter for Grid Connected Photovoltaic System

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