Decentralised Active Power Control Strategy for Real-Time Power Balance in an Isolated Microgrid with an Energy Storage System and Diesel Generators
Remote microgrids with battery energy storage systems (BESSs), diesel generators, and renewable energy sources (RESs) have recently received significant attention because of their improved power quality and remarkable capability of continuous power supply to loads. In this paper, a new proportional...
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-02-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/12/3/511 |
| _version_ | 1798025560846237696 |
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| author | Hyeon-Jin Moon Young Jin Kim Jae Won Chang Seung-Il Moon |
| author_facet | Hyeon-Jin Moon Young Jin Kim Jae Won Chang Seung-Il Moon |
| author_sort | Hyeon-Jin Moon |
| collection | DOAJ |
| description | Remote microgrids with battery energy storage systems (BESSs), diesel generators, and renewable energy sources (RESs) have recently received significant attention because of their improved power quality and remarkable capability of continuous power supply to loads. In this paper, a new proportional control method is proposed using frequency-bus-signaling to achieve real-time power balance continuously under an abnormal condition of short-term power shortage in a remote microgrid. Specifically, in the proposed method, the frequency generated by the grid-forming BESS is used as a global signal and, based on the signal, a diesel generator is then controlled indirectly. The frequency is controlled to be proportional to the AC voltage deviation of the grid-forming BESS to detect sudden power shortages and share active power with other generators. Unlike a conventional constant-voltage constant-frequency (CVCF) control method, the proposed method can be widely applied to optimise the use of distributed energy resources (DERs), while maintaining microgrid voltages within an allowable range, particularly when active power balance cannot be achieved only using CVCF control. For case studies, a comprehensive model of an isolated microgrid is developed using real data. Simulation results are obtained using MATLAB/Simulink to verify the effectiveness of the proposed method in improving primary active power control in the microgrid. |
| first_indexed | 2024-04-11T18:20:55Z |
| format | Article |
| id | doaj.art-68277edd5f3b49c6b6bbb27c068f1e47 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-11T18:20:55Z |
| publishDate | 2019-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-68277edd5f3b49c6b6bbb27c068f1e472022-12-22T04:09:46ZengMDPI AGEnergies1996-10732019-02-0112351110.3390/en12030511en12030511Decentralised Active Power Control Strategy for Real-Time Power Balance in an Isolated Microgrid with an Energy Storage System and Diesel GeneratorsHyeon-Jin Moon0Young Jin Kim1Jae Won Chang2Seung-Il Moon3Department of Electrical and Computer Engineering, Seoul National University, 1 Gwanak-ro, Seoul 08826, KoreaDepartment of Electrical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyungbuk 37673, KoreaDepartment of Electrical and Computer Engineering, Seoul National University, 1 Gwanak-ro, Seoul 08826, KoreaDepartment of Electrical and Computer Engineering, Seoul National University, 1 Gwanak-ro, Seoul 08826, KoreaRemote microgrids with battery energy storage systems (BESSs), diesel generators, and renewable energy sources (RESs) have recently received significant attention because of their improved power quality and remarkable capability of continuous power supply to loads. In this paper, a new proportional control method is proposed using frequency-bus-signaling to achieve real-time power balance continuously under an abnormal condition of short-term power shortage in a remote microgrid. Specifically, in the proposed method, the frequency generated by the grid-forming BESS is used as a global signal and, based on the signal, a diesel generator is then controlled indirectly. The frequency is controlled to be proportional to the AC voltage deviation of the grid-forming BESS to detect sudden power shortages and share active power with other generators. Unlike a conventional constant-voltage constant-frequency (CVCF) control method, the proposed method can be widely applied to optimise the use of distributed energy resources (DERs), while maintaining microgrid voltages within an allowable range, particularly when active power balance cannot be achieved only using CVCF control. For case studies, a comprehensive model of an isolated microgrid is developed using real data. Simulation results are obtained using MATLAB/Simulink to verify the effectiveness of the proposed method in improving primary active power control in the microgrid.https://www.mdpi.com/1996-1073/12/3/511microgridenergy storage systemdistributed generatorfrequency controlactive power controlautonomous controldroop controlfrequency bus-signaling |
| spellingShingle | Hyeon-Jin Moon Young Jin Kim Jae Won Chang Seung-Il Moon Decentralised Active Power Control Strategy for Real-Time Power Balance in an Isolated Microgrid with an Energy Storage System and Diesel Generators Energies microgrid energy storage system distributed generator frequency control active power control autonomous control droop control frequency bus-signaling |
| title | Decentralised Active Power Control Strategy for Real-Time Power Balance in an Isolated Microgrid with an Energy Storage System and Diesel Generators |
| title_full | Decentralised Active Power Control Strategy for Real-Time Power Balance in an Isolated Microgrid with an Energy Storage System and Diesel Generators |
| title_fullStr | Decentralised Active Power Control Strategy for Real-Time Power Balance in an Isolated Microgrid with an Energy Storage System and Diesel Generators |
| title_full_unstemmed | Decentralised Active Power Control Strategy for Real-Time Power Balance in an Isolated Microgrid with an Energy Storage System and Diesel Generators |
| title_short | Decentralised Active Power Control Strategy for Real-Time Power Balance in an Isolated Microgrid with an Energy Storage System and Diesel Generators |
| title_sort | decentralised active power control strategy for real time power balance in an isolated microgrid with an energy storage system and diesel generators |
| topic | microgrid energy storage system distributed generator frequency control active power control autonomous control droop control frequency bus-signaling |
| url | https://www.mdpi.com/1996-1073/12/3/511 |
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