Optimization of the functioning of the renewable energy sources in the local electrical systems

Burykin, Oleksandr; Malogulko, Juliya; Tomashevskiy, Y. V.; Komada, Paweł; Orshubekov, N.; Kozhamberdiyeva, Mergul; Sagymbekova, Azhar

doi:10.15199/48.2017.03.23

Cited by 8 publications

(3 citation statements)

References 10 publications

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“…At high wind speeds, it works at hyper-synchronous speeds. Another advantage of the asynchronous dual power generator technology is the ability of power electronic converters to generate or absorb reactive power, which eliminates the need to install capacitor batteries, as in the case of short circuit rotor asynchronous generators [36,37].…”

Section: Methodsmentioning

confidence: 99%

Research of Emergency Modes of Wind Power Plants Using Computer Simulation

et al. 2021

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The aim of this study is to investigate changes in the wind power plant energy production parameters under the conditions of sudden wind changes and voltage drop. To achieve these goals, a simulation of operation of wind power plants was performed. Twelve wind turbines with variable rotational speed equipped with a Fuhrländer FL 2500/104 asynchronous double-fed induction generator (DFIG) were used, each with an installed capacity of 2.5 MW. A general scheme of a wind power plant has been developed using a modular-trunk power distribution scheme. The system consists of wind power modules and a central substation, which allows total power to be supplied to the power system at a voltage of 35 kV. The central substation uses two high voltage switchgears. Four modules were used, each of them consisting of three wind turbines, with a power of 7.5 MW. The simulation of the wind turbines was performed in the MATLAB® Simulink® software environment. The mode of response of the turbines to a change in wind speed, a voltage drop in the 35 kV voltage system, and a one-phase short circuit to the ground in the system of 10.5 kV voltage was explored. The results show that a sudden voltage drop and the appearance of short circuits influence the wind power plant (WPP) operation in a different way independent of regulation mode. The power generation from WPP will be limited when voltage drop occurred for both AC and Voltage regulation mode and during short circuits while WPP is set on AC regulation mode.

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Section: Methodsmentioning

confidence: 99%

Research of Emergency Modes of Wind Power Plants Using Computer Simulation

et al. 2021

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“…More details about this are written in the paper [28][29][30][31]. The optimal control task of the parameters of the electric power system in its normal mode can be presented by the expression [32]: minimize the control function (10) in the set of states of the electric power system:…”

Section: The Control Of the Parameters Of Normal Mode Electric Power ...mentioning

confidence: 99%

“…Components of the optimality criterion at the control of normal mode parameters of electric power systems with RESs are shown in Figure 9 [24, [26][27][28][29][30]. Following the investigation components of the optimality criterion for control in electric power systems, the next step of the research is to study the influence of meteorological factors on the generation of RESs [31][32][33].…”

Section: J(t) =mentioning

confidence: 99%

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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