Power Management Strategy for an Autonomous DC Microgrid
Owing to the intermittent nature of renewable energy, microgrids in islanding operation mode require backup power sources. The diesel generator is the most popular backup source, but does not offer an instantaneous start-up and cannot immediately provide the necessary power. Therefore, supercapacito...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-11-01
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| Series: | Applied Sciences |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2076-3417/8/11/2202 |
| _version_ | 1819242930411405312 |
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| author | Changjie Yin Hongwei Wu Manuela Sechilariu Fabrice Locment |
| author_facet | Changjie Yin Hongwei Wu Manuela Sechilariu Fabrice Locment |
| author_sort | Changjie Yin |
| collection | DOAJ |
| description | Owing to the intermittent nature of renewable energy, microgrids in islanding operation mode require backup power sources. The diesel generator is the most popular backup source, but does not offer an instantaneous start-up and cannot immediately provide the necessary power. Therefore, supercapacitors are used to assist the power balance during diesel generator start-up thanks to their responsiveness and high-power density. This paper proposed a power management strategy for an autonomous DC microgrid based on a photovoltaic source, electrochemical storage, a supercapacitor, and a diesel generator. The proposed control system aimed at power balance while accounting for the slow start-up characteristic of the diesel generator, the self-discharge of the supercapacitor, the dynamic load management, and the economic operating mode of the diesel generator. The main contribution of this paper centered on a power management strategy solving the above issues integrally, and economic analysis for the diesel generator and microgrid. Experimental studies were carried out for different scenarios and the results obtained confirmed the effectiveness of the proposed strategy. Furthermore, the study provided a comparison between the economic operating and load-following modes of the diesel generator and demonstrated that the economic operating mode of the diesel generator can reduce the total energy cost of the DC microgrid. |
| first_indexed | 2024-12-23T14:47:38Z |
| format | Article |
| id | doaj.art-7c7e791376a34cf4993d72f444045e29 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-12-23T14:47:38Z |
| publishDate | 2018-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-7c7e791376a34cf4993d72f444045e292022-12-21T17:43:03ZengMDPI AGApplied Sciences2076-34172018-11-01811220210.3390/app8112202app8112202Power Management Strategy for an Autonomous DC MicrogridChangjie Yin0Hongwei Wu1Manuela Sechilariu2Fabrice Locment3Global Energy Interconnection Development and Cooperation Organization, No. 8 Xuanwumennei Street, Xicheng District, Beijing 100000, ChinaAVENUES EA 7284, Sorbonne University, Université de Technologie de Compiègne, rue du Dr Schweitzer CS 60319, 60203 Compiègne, FranceAVENUES EA 7284, Sorbonne University, Université de Technologie de Compiègne, rue du Dr Schweitzer CS 60319, 60203 Compiègne, FranceAVENUES EA 7284, Sorbonne University, Université de Technologie de Compiègne, rue du Dr Schweitzer CS 60319, 60203 Compiègne, FranceOwing to the intermittent nature of renewable energy, microgrids in islanding operation mode require backup power sources. The diesel generator is the most popular backup source, but does not offer an instantaneous start-up and cannot immediately provide the necessary power. Therefore, supercapacitors are used to assist the power balance during diesel generator start-up thanks to their responsiveness and high-power density. This paper proposed a power management strategy for an autonomous DC microgrid based on a photovoltaic source, electrochemical storage, a supercapacitor, and a diesel generator. The proposed control system aimed at power balance while accounting for the slow start-up characteristic of the diesel generator, the self-discharge of the supercapacitor, the dynamic load management, and the economic operating mode of the diesel generator. The main contribution of this paper centered on a power management strategy solving the above issues integrally, and economic analysis for the diesel generator and microgrid. Experimental studies were carried out for different scenarios and the results obtained confirmed the effectiveness of the proposed strategy. Furthermore, the study provided a comparison between the economic operating and load-following modes of the diesel generator and demonstrated that the economic operating mode of the diesel generator can reduce the total energy cost of the DC microgrid.https://www.mdpi.com/2076-3417/8/11/2202DC microgridpower management strategydiesel generatorsupercapacitorpower balanceenergy cost |
| spellingShingle | Changjie Yin Hongwei Wu Manuela Sechilariu Fabrice Locment Power Management Strategy for an Autonomous DC Microgrid Applied Sciences DC microgrid power management strategy diesel generator supercapacitor power balance energy cost |
| title | Power Management Strategy for an Autonomous DC Microgrid |
| title_full | Power Management Strategy for an Autonomous DC Microgrid |
| title_fullStr | Power Management Strategy for an Autonomous DC Microgrid |
| title_full_unstemmed | Power Management Strategy for an Autonomous DC Microgrid |
| title_short | Power Management Strategy for an Autonomous DC Microgrid |
| title_sort | power management strategy for an autonomous dc microgrid |
| topic | DC microgrid power management strategy diesel generator supercapacitor power balance energy cost |
| url | https://www.mdpi.com/2076-3417/8/11/2202 |
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