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    Tytuł:
    Modelling of energy sources and energy storage devices for the purpose of analysis the low voltage microgrid operation
    Modelowanie źródeł i zasobników energii do celów analizy pracy mikrosystemów elektroenergetycznych niskiego napięcia
    Autorzy:
    Małaczek, M.
    Wasiak, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/397177.pdf
    Data publikacji:
    2017
    Wydawca:
    ENERGA
    Tematy:
    microgrids
    microgrid modelling
    distributed generation
    microgrid control
    energy storage
    mikrosystemy elektroenergetyczne
    modelowanie mikrosystemów
    generacja rozproszona
    sterowanie mikrosystemem
    zasobnik energii elektrycznej
    Opis:
    The paper presents methods of modelling electricity sources and storages for the purpose of analysing the performance of microgrids in steady and transient states. The subject of the study is a low voltage microgrid comprising controllable and uncontrollable energy sources, storages and loads. Models of energy sources and storage are presented as well as their control algorithms for the two modes of operation of the microgrid: in connection with the utility network, and in autonomous operation. A simulation model of the microgrid was developed in PSCAD/ EMTDC. Selected simulation results are presented which illustrate the performance of the system under assumed conditions.
    W artykule zaprezentowano sposoby modelowania źródeł oraz zasobników energii elektrycznej do celów analizy pracy mikrosystemów energetycznych w stanach ustalonych i przejściowych. Przedmiotem badań jest mikrosystem niskiego napięcia zawierający sterowalne i niesterowalne źródła energii, zasobniki oraz odbiory. Przedstawiono modele źródeł i zasobników energii oraz ich algorytmy sterowania dla dwóch trybów pracy mikrosystemu: pracy w połączeniu z siecią zasilającą oraz pracy autonomicznej. Opracowano model symulacyjny przykładowego mikrosystemu w programie PSCAD/EMTDC. Zaprezentowano wybrane wyniki symulacji, ilustrujące działanie układu w założonych warunkach.
    Źródło:
    Acta Energetica; 2017, 3; 162-169
    2300-3022
    Pojawia się w:
    Acta Energetica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Strategia sterowania mikrosystemem elektroenergetycznym niskiego napięcia zapewniająca jego elastyczną pracę w trybie połączenia z siecią zasilającą i w trybie wyspowym, przy wykorzystaniu zasobnika energii
    A control strategy for flexible operation of lv microgrid in both grid- connected and islanded mode based on energy storage utilization
    Autorzy:
    Małaczek, Michał
    Wasiak, Irena
    Powiązania:
    https://bibliotekanauki.pl/articles/267429.pdf
    Data publikacji:
    2019
    Wydawca:
    Politechnika Gdańska. Wydział Elektrotechniki i Automatyki
    Tematy:
    mikrosystemy elektroenergetyczne
    sterowanie hierarchiczne
    praca wyspowa
    jakość zasilania
    microgrid autonomous operation
    microgrid hierarchical control
    energy storage
    power quality
    Opis:
    W artykule zaprezentowano strategię sterowania, która umożliwia pracę mikrosystemu elektroenergetycznego (MSE) niskiego napięcia w dwóch trybach: w połączeniu z siecią zasilającą oraz w trybie wyspowym. Rozpatrywany MSE zawiera sterowalne i niesterowalne źródła energii, zasobnik energii (ZE) oraz odbiory. Strategia sterowania jest hierarchiczna i bazuje na rozszerzeniu funkcjonalności zasobnika energii oraz implementacji centralnego regulatora (CR) zarządzającego pracą urządzeń sterowanych. Przedstawiono koncepcję sterowania ze szczególnym uwzględnieniem działania regulatora centralnego. Zaprezentowano model symulacyjny zbudowany w środowisku PSCAD/EMTDC do analizy proponowanego systemu sterowania i oceny pracy MSE. Przedstawiono i omówiono wyniki symulacji, które obrazują poprawność i efektywność zaproponowanej strategii sterowania.
    In the paper, a hierarchical control strategy is presented allowing a low voltage microgrid (MG) to operate in both gridconnected and islanded mode. The considered MG consist of photovoltaic panels (PV), gas microturbine (MT), loads and energy storage (ES). The concept is based on enhancing the functionality of an ESS which is used for energy management in normal operating conditions of the network and a central controller for supervising the network operation in grid-connected and islanded modes. It has been assumed that the ESS serves as grid-forming unit, i.e. maintains the reference voltage and is responsible for short-term power balancing during islanded operation. Performance of the proposed strategy is presented as a reaction of the network on voltage dips, however the idea is applicable to any power quality (PQ) disturbance of unacceptable level occurring in the utility grid. For the considered network a simulation model has been developed using PSCAD/EMTDC platform. Simulation results are presented in the paper which illustrate the operation of the control system and show the microgrid behavior after transition from grid-connected to islanded operation and back.
    Źródło:
    Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej; 2019, 62; 77-80
    1425-5766
    2353-1290
    Pojawia się w:
    Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Dynamic performance improvement of small scale synchronous generator adjacent to electric arc furnace load
    Autorzy:
    Yeganeh, Mehdi
    Sedaghati, Alireza
    Powiązania:
    https://bibliotekanauki.pl/articles/41191092.pdf
    Data publikacji:
    2023
    Wydawca:
    Politechnika Warszawska, Instytut Techniki Cieplnej
    Tematy:
    electric arc furnace
    small-scale synchronous generator
    generator torque
    microgrid control
    elektryczny piec łukowy
    generator synchroniczny małej skali
    moment generatora
    sterowanie mikrosiecią
    Opis:
    Electric arc furnace has a variable power consumption with time that causes mechanical oscillations in the adjacent small scale synchronous generators, and consequently, decreases its life. In this paper, we first provide a model for electric arc furnace and is validated using actual measured data. In this paper a real distribution system consisting of the small scale synchronous generator, which feeds industrial loads, including electric arc furnaces, is analyzed and evaluated based on the simulation of the time domain. Using analytical studies and simulation results, the appropriate value for controller parameters of the prime mover is determined in such a way that the mechanical oscillations of the small scale synchronous generator created by the electric arc furnace are reduced. In addition, the response of the transient mode of the small scale synchronous generator is also considered in the proper setting of the parameters. Finally reliability and effectiveness of the proposed parameters are evaluated using real measurement data.
    Źródło:
    Journal of Power Technologies; 2023, 103, 4; 218-229
    1425-1353
    Pojawia się w:
    Journal of Power Technologies
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    PQ Cootrol of Photovoltaic Power Statioo in Microgrid Operation
    Autorzy:
    Cygan, S.
    Łukowicz, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/410543.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    inverter PQ control
    PowerSys microgrid model
    microgird control
    Opis:
    The numerical modelling of the photovoltaic module and the solar inverter interconnected with the microgrid has been carried out with the use of PowerSys in Matlab/Simulink. Algorithms of P, Q controllers have been proposed. The capability of the active and reactive power reference tracking has been tested for various conditions.
    Źródło:
    Present Problems of Power System Control; 2017, 8; 51-59
    2084-2201
    Pojawia się w:
    Present Problems of Power System Control
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparing the use of two kinds of droop control under microgrid islanded operation mode
    Autorzy:
    Gao, D.
    Jiang, J.
    Qiao, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/140937.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    microgrid
    microsource
    droop control
    power distribution
    Opis:
    A microgrid with parallel structure operating under islanded mode is considered in this paper. Under microgrid islanded operation mode, lines bring adverse effect for power distribution between microsources (MSs). Because traditional droop control ignores this effect, MSs adopting this method can not achieve satisfactory power distribution. A kind of droop control including line compensation applied to this microgrid is proposed. It can eliminate this effect to obtain satisfactory power distribution. The relationship of two kinds of droop control with power distribution is analyzed. The reference voltage generated by droop control is applied to control output voltage of MSs. Comparison of two kinds of droop control through MATLAB/Simulink simulation is made to verify the superiority of droop control including line compensation for power distribution. The relationship between PCC voltage and output power of MSs is also presented.
    Źródło:
    Archives of Electrical Engineering; 2013, 62, 2; 321-331
    1427-4221
    2300-2506
    Pojawia się w:
    Archives of Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Solar power and multi-battery for new configuration DC microgrid using centralized control
    Autorzy:
    Kusmantoro, Adhi
    Farikhan, Irna
    Powiązania:
    https://bibliotekanauki.pl/articles/27309946.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Czasopisma i Monografie PAN
    Tematy:
    centralized control
    DC microgrid
    multi-battery
    PV array
    Opis:
    The abundant use of solar energy in Indonesia has the potential to become electrical energy in a microgrid system. Currently the use of renewable energy sources (RESs) in Indonesia is increasing in line with the reduction of fossil fuels. This paper proposes a new microgrid DC configuration and designs a centralized control strategy to manage the power flow from renewable energy sources and the load side. The proposed design uses three PV arrays (300 Wp PV module) with a multi-battery storage system (MBSS), storage (200 Ah battery). Centralized control in the study used an outseal programmable logic controller (PLC). In this study, the load on the microgrid is twenty housing, so that the use of electrical energy for one day is 146.360 Wh. It is estimated that in one month it takes 4.390.800 Wh of electrical energy. The new DC microgrid configuration uses a hybrid configuration, namely the DC coupling and AC coupling configurations.The results of the study show that the DC microgrid hybrid configuration with centralized control is able to alternately regulate the energy flow from the PV array and MBSS. The proposed system has an efficiency of 98% higher than the previous DC microgrid control strategy and configuration models.
    Źródło:
    Archives of Electrical Engineering; 2023, 72, 4; 931--950
    1427-4221
    2300-2506
    Pojawia się w:
    Archives of Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Intelligent multi-agent system for DC microgrid energy coordination control
    Autorzy:
    Qaderi-Baban, P.
    Menhaj, M. B.
    Dosaranian-Moghadam, M.
    Fakharian, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/200811.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    multi-agent system
    DC microgrid
    energy management
    coordinated control
    voltage control
    Opis:
    In this paper, an energy coordination control method based on intelligent multi-agent systems (MAS) is proposed for energy management and voltage control of a DC microgrid. The structure of the DC microgrid is designed to realize the mathematical modeling of photovoltaic cells, fuel cells and batteries. A two-layer intelligent MAS is designed for energy coordination control: grid-connection and islanding of a DC microgrid is combined with energy management of PV cells, fuel cells, loads and batteries. In the hidden layer and the output layer of the pro-posed neural network there are 17 and 8 neurons, respectively, and the “logsig” activation function is used for the neurons in the network. Eight kinds of feature quantities and 13 different actions are taken as the input and output parameters of the neural network from the micro-source and the load, and the as the control center agent’s decision-makers. The feasibility of the proposed intelligent multi-agent energy coordination control strategy is verified by MATLAB/Simulink simulation, and three types of examples are analyzed after increasing the load. The simulation results show that the proposed scheme exhibits better performance than the traditional approaches.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2019, 67, 4; 741-748
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Coordinated control strategy for microgrid stability maintenance under isolated island operation
    Autorzy:
    Wu, Pan
    Xu, Xiaowei
    Powiązania:
    https://bibliotekanauki.pl/articles/1841281.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    coordinated control
    isolated island operation
    microgrid
    particle swarm optimization
    Opis:
    In this study, the inverter in a microgrid was adjusted by the particle swarm optimization (PSO) based coordinated control strategy to ensure the stability of the isolated island operation. The simulation results showed that the voltage at the inverter port reduced instantaneously, and the voltage unbalance degree of its port and the port of point of common coupling (PCC) exceeded the normal standard when the microgrid entered the isolated island mode. After using the coordinated control strategy, the voltage rapidly recovered, and the voltage unbalance degree rapidly reduced to the normal level. The coordinated control strategy is better than the normal control strategy.
    Źródło:
    Archives of Electrical Engineering; 2021, 70, 2; 285-295
    1427-4221
    2300-2506
    Pojawia się w:
    Archives of Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Improved dynamic control method for energy storage units in PV dominated microgrids
    Autorzy:
    Wang, Q.
    Liu, Y.
    Song, W.
    Xuan, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/141382.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    current correction coefficient
    load distribution
    PV DC microgrid
    secondary control
    weighted calculation
    Opis:
    In a PV-dominant DC microgrid, the traditional energy distribution method based on the droop control method has problems such as output voltage drop, insufficient power distribution accuracy, etc. Meanwhile, different battery energy storage units usually have different parameters when the system is running. Therefore, this paper proposes an improved control method that introduces a reference current correction factor, and a weighted calculation method for load power distribution based on the parameters of battery energy storage units is proposed to achieve weighted allocation of load power. In addition, considering the variation of bus voltage at the time of load mutation, voltage secondary control is added to realize dynamic adjustment of DC bus voltage fluctuation. The proposed method can achieve balance and stable operation of energy storage units. The simulation results verified the effectiveness and stability of the proposed control strategy.
    Źródło:
    Archives of Electrical Engineering; 2018, 67, 4; 885-898
    1427-4221
    2300-2506
    Pojawia się w:
    Archives of Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A Robust Control Strategy for Microgrid Energy Using Fuzzy Logic
    Autorzy:
    Meliani, Meryem
    El Barkany, Abdellah
    El Abbassi, Ikram
    Absi, Rafik
    Jeffali, Faouaz
    Powiązania:
    https://bibliotekanauki.pl/articles/2201185.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    energy control
    renewable energy sources
    fuzzy logic system
    microgrid
    storage system
    smart grid
    Opis:
    This paper highlights the storage charging and discharging issue. The study objective is to manage the energy inputs and outputs of the principal grid at the same time in order to maximize profit while decreasing costs, as well as to ensure the availability of energy according to demand and the decisions to either save or search for energy. A fuzzy logic control model is applied in MATLAB Simulink to deal with the system’s uncertainties in scheduling the storage battery technology and the charging- discharging. The results proved that the fuzzy logic model has the potential to efficiently lower fluctuations and prolong the lifecycle.
    Źródło:
    Management and Production Engineering Review; 2023, 14, 1; 127--136
    2080-8208
    2082-1344
    Pojawia się w:
    Management and Production Engineering Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Optimal size and location of dispatchable distributed generators in an autonomous microgrid using Honey Badger algorithm
    Autorzy:
    Nguyen, Tham X.
    Lis, Robert
    Powiązania:
    https://bibliotekanauki.pl/articles/27309951.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Czasopisma i Monografie PAN
    Tematy:
    autonomous microgrid
    dispatchable distributed generator
    droop control
    modified backward-forward sweep
    voltage stability index
    Opis:
    The paper presents a honey badger algorithm (HB) based on a modified backward- forward sweep power flow method to determine the optimal placement of droop-controlled dispatchable distributed generations (DDG) corresponding to their sizes in an autonomous microgrid (AMG). The objectives are to minimise active power loss while considering the reduction of reactive power loss and total bus voltage deviation, and the maximisation of the voltage stability index. The proposed HB algorithm has been tested on a modified IEEE 33-bus AMG under four scenarios of the load profile at 40%, 60%, 80%, and 100% of the rated load. The analysis of the results indicates that Scenario 4, where the HB algorithm is used to optimise droop gains, the positioning of DDGs, and their reference voltage magnitudes within a permissible range, is more effective in mitigating transmission line losses than the other scenarios. Specifically, the active and reactive power losses in Scenario 4 with the HB algorithm are only 0.184% and 0.271% of the total investigated load demands, respectively. Compared to the base scenario (rated load), Scenario 4 using the HB algorithm also reduces active and reactive power losses by 41.86% and 31.54%, respectively. Furthermore, the proposed HB algorithm outperforms the differential evolution algorithm when comparing power losses for scenarios at the total investigated load and the rated load. The results obtained demonstrate that the proposed algorithm is effective in reducing power losses for the problem of optimal placement and size of DDGs in the AMG.
    Źródło:
    Archives of Electrical Engineering; 2023, 72, 4; 871--893
    1427-4221
    2300-2506
    Pojawia się w:
    Archives of Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Praca autonomiczna mikrosystemów elektroenergetycznych niskiego napięcia
    Autonomous operation of low voltage microsystems
    Autorzy:
    Wasiak, I.
    Pawełek, R.
    Kelm, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/952776.pdf
    Data publikacji:
    2013
    Wydawca:
    Politechnika Gdańska. Wydział Elektrotechniki i Automatyki
    Tematy:
    mikrosystemy elektroenergetyczne
    praca wyspowa
    sterowanie pracą mikrosystemów
    microgrids
    microgrid autonomous operation
    microgrids control
    energy storage
    Opis:
    W artykule przedstawiono możliwości pracy autonomicznej mikrosystemów niskiego napięcia. Omówiono strategie sterowania źródłami energii, przyłączonymi do sieci za pomocą przekształtników, przy pracy w połączeniu z siecią zasilająca oraz przy pracy wyspowej. Przedstawiono wyniki badań testowych pracy wyspowej mikrosystemu skonfigurowanego w Laboratorium Generacji Rozproszonej Instytutu Elektroenergetyki Politechniki Łódzkiej.
    The article describes the possibilities of LV microsystems operation in the island mode. Control strategies are discussed of energy sources connected to the grid by means of invertors, either for system connected to the main grid or during the island mode operation. Presented results of research were conducted at the DER laboratory at the Lodz University of Technology. The study was performed for two variants of reference voltage source: the battery storage and microturbine respectively.
    Źródło:
    Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej; 2013, 33; 87-90
    1425-5766
    2353-1290
    Pojawia się w:
    Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Autonomous Operation of Low Voltage Microgrids
    Praca autonomiczna mikrosystemów elektroenergetycznych niskiego napięcia
    Autorzy:
    Wasiak, I.
    Pawełek, R.
    Kelm, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/397162.pdf
    Data publikacji:
    2014
    Wydawca:
    ENERGA
    Tematy:
    mikrosystemy elektroenergetyczne
    praca wyspowa
    sterowanie pracą mikrosystemów
    zasobniki energii
    microgrids
    microgrid autonomous operation
    microgrids control
    energy storage
    Opis:
    The article describes the possibilities of LV microgrids operation in the island mode. Control strategies of energy sources connected to the grid by means of invertors are discussed, either for a microgrid connected to the supplying network or during the island mode operation. The presented results of research were conducted at the Laboratory of Distributed Generation at Lodz University of Technology. The study was performed for two variants of reference voltage source: the battery storage and microturbine respectively.
    W artykule autorzy przedstawili możliwości pracy autonomicznej mikrosystemów niskiego napięcia. Omówiono strategie sterowania źródłami energii, przyłączonymi do sieci za pomocą przekształtników, podczas pracy w połączeniu z siecią zasilającą oraz podczas pracy wyspowej. Zaprezentowano wyniki badań przeprowadzonych w mikrosystemie skonfigurowanym w Laboratorium Generacji Rozproszonej Instytutu Elektroenergetyki Politechniki Łódzkiej. Badania wykonano w dwóch wariantach: w pierwszym źródłem napięcia referencyjnego była mikroturbina, w drugim elektrochemiczny zasobnik energii.
    Źródło:
    Acta Energetica; 2014, 4; 156-170
    2300-3022
    Pojawia się w:
    Acta Energetica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A decentralized control strategy to bring back frequency and share reactive power in isolated microgrids with virtual power plant
    Autorzy:
    Khanjanzadeh, Amir
    Soleymani, Soodabeh
    Mozafari, Babak
    Powiązania:
    https://bibliotekanauki.pl/articles/2090692.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    PFDC
    power-frequency droop control
    VPP
    virtual power plant
    microgrid
    virtual impedance
    decentralized control
    kontrola spadku częstotliwości zasilania
    wirtualna elektrownia
    mikrosieci
    wirtualna impedancja
    zdecentralizowana kontrola
    Opis:
    In this paper, a novel Power-Frequency Droop Control (PFDC) is introduced to perfectly bring back the system frequency and share the reactive power in isolated microgrid with virtual power plant (VPP). The frequency-based power delivery must be essentially implemented in VPP which can operate as a conventional synchronous generator. It has been attained by enhancing the power processing unit of each VPP to operate as an active generator. The inverter coupling impedance which has been assigned by the virtual impedance technique has reduced the affected power coupling resulting from line resistance. The reference has been subsequently adjusted to compensate the frequency deviation caused by load variation and retrieve the VPP frequency to its nominal value. In addition, the line voltage drop has compensated the voltage drop and load sharing error to obliterate the reactive power sharing imprecision resulting from the voltage deviation. The voltage feedback confirms the correct voltage after compensating the voltage drop. As an illustration, conventional PFDC after a load change cannot restore the system frequency which is deviated from 50 Hz and rested in 49.9 Hz while, proposed PFDC strategy fades away the frequency deviation via compensating the variation of the frequency reference. Likewise, the frequency restoration factor ( γ) has an effective role in retrieving the system frequency, i.e., the restoration rate of the system frequency is in proportion with γ. As a whole, the simulation results have pointed to the high performance of proposed strategy in an isolated microgrid.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2021, 69, 1; e136190, 1--9
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A decentralized control strategy to bring back frequency and share reactive power in isolated microgrids with virtual power plant
    Autorzy:
    Khanjanzadeh, Amir
    Soleymani, Soodabeh
    Mozafari, Babak
    Powiązania:
    https://bibliotekanauki.pl/articles/2173517.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    PFDC
    power-frequency droop control
    VPP
    virtual power plant
    microgrid
    virtual impedance
    decentralized control
    kontrola spadku częstotliwości zasilania
    elektrownia wirtualna
    mikrosieci
    wirtualna impedancja
    zdecentralizowana kontrola
    Opis:
    In this paper, a novel Power-Frequency Droop Control (PFDC) is introduced to perfectly bring back the system frequency and share the reactive power in isolated microgrid with virtual power plant (VPP). The frequency-based power delivery must be essentially implemented in VPP which can operate as a conventional synchronous generator. It has been attained by enhancing the power processing unit of each VPP to operate as an active generator. The inverter coupling impedance which has been assigned by the virtual impedance technique has reduced the affected power coupling resulting from line resistance. The reference has been subsequently adjusted to compensate the frequency deviation caused by load variation and retrieve the VPP frequency to its nominal value. In addition, the line voltage drop has compensated the voltage drop and load sharing error to obliterate the reactive power sharing imprecision resulting from the voltage deviation. The voltage feedback confirms the correct voltage after compensating the voltage drop. As an illustration, conventional PFDC after a load change cannot restore the system frequency which is deviated from 50 Hz and rested in 49.9 Hz while, proposed PFDC strategy fades away the frequency deviation via compensating the variation of the frequency reference. Likewise, the frequency restoration factor ( γ) has an effective role in retrieving the system frequency, i.e., the restoration rate of the system frequency is in proportion with γ. As a whole, the simulation results have pointed to the high performance of proposed strategy in an isolated microgrid.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2021, 69, 1; art. no. e136190, 1--9
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-15 z 15

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