Optimal Capacity Sizing for the Integration of a Battery and Photovoltaic Microgrid to Supply Auxiliary Services in Substations under a Contingency
Auxiliary services are vital for the operation of a substation. If a contingency affects the distribution feeder that provides energy for the auxiliary services, it could lead to the unavailability of the substation’s service. Therefore, backup systems such as diesel generators are used. Another alt...
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MDPI AG
2020-11-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/13/22/6037 |
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| author | Alejandra Tabares Norberto Martinez Lucas Ginez José F. Resende Nierbeth Brito John Fredy Franco |
| author_facet | Alejandra Tabares Norberto Martinez Lucas Ginez José F. Resende Nierbeth Brito John Fredy Franco |
| author_sort | Alejandra Tabares |
| collection | DOAJ |
| description | Auxiliary services are vital for the operation of a substation. If a contingency affects the distribution feeder that provides energy for the auxiliary services, it could lead to the unavailability of the substation’s service. Therefore, backup systems such as diesel generators are used. Another alternative is the adoption of a microgrid with batteries and photovoltaic generation to supply substation auxiliary services during a contingency. Nevertheless, high battery costs and the intermittence of photovoltaic generation requires a careful analysis so the microgrid capacity is defined in a compromise between the investment and the unavailability reduction of auxiliary services. This paper proposes a method for the capacity sizing of a microgrid with batteries, photovoltaic generation, and bidirectional inverters to supply auxiliary services in substations under a contingency. A set of alternatives is assessed through exhaustive search and Monte Carlo simulations to cater for uncertainties of contingencies and variation of solar irradiation. An unavailability index is proposed to measure the contribution of the integrated hybrid microgrid to reduce the time that the substation is not in operation. Simulations carried out showed that the proposed method identifies the microgrid capacity with the lowest investment that satisfies a goal for the unavailability of the substation service. |
| first_indexed | 2024-03-10T14:45:01Z |
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| id | doaj.art-a0972f810f9747be9958ebadbc4effe1 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T14:45:01Z |
| publishDate | 2020-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-a0972f810f9747be9958ebadbc4effe12023-11-20T21:29:25ZengMDPI AGEnergies1996-10732020-11-011322603710.3390/en13226037Optimal Capacity Sizing for the Integration of a Battery and Photovoltaic Microgrid to Supply Auxiliary Services in Substations under a ContingencyAlejandra Tabares0Norberto Martinez1Lucas Ginez2José F. Resende3Nierbeth Brito4John Fredy Franco5Faculty of Electrical Engineering, Campus of Ilha Solteira, São Paulo State University, Ilha Solteira 15385-000, BrazilFaculty of Electrical Engineering, Campus of Ilha Solteira, São Paulo State University, Ilha Solteira 15385-000, BrazilFaculty of Electrical Engineering, Campus of Ilha Solteira, São Paulo State University, Ilha Solteira 15385-000, BrazilSchool of Energy Engineering, Campus of Rosana, São Paulo State University, Rosana 19274-000, BrazilINTESA—Integration Power Transmitter S.A.—Power Transmission Utilities, Brasília 70.196-900, BrazilFaculty of Electrical Engineering, Campus of Ilha Solteira, São Paulo State University, Ilha Solteira 15385-000, BrazilAuxiliary services are vital for the operation of a substation. If a contingency affects the distribution feeder that provides energy for the auxiliary services, it could lead to the unavailability of the substation’s service. Therefore, backup systems such as diesel generators are used. Another alternative is the adoption of a microgrid with batteries and photovoltaic generation to supply substation auxiliary services during a contingency. Nevertheless, high battery costs and the intermittence of photovoltaic generation requires a careful analysis so the microgrid capacity is defined in a compromise between the investment and the unavailability reduction of auxiliary services. This paper proposes a method for the capacity sizing of a microgrid with batteries, photovoltaic generation, and bidirectional inverters to supply auxiliary services in substations under a contingency. A set of alternatives is assessed through exhaustive search and Monte Carlo simulations to cater for uncertainties of contingencies and variation of solar irradiation. An unavailability index is proposed to measure the contribution of the integrated hybrid microgrid to reduce the time that the substation is not in operation. Simulations carried out showed that the proposed method identifies the microgrid capacity with the lowest investment that satisfies a goal for the unavailability of the substation service.https://www.mdpi.com/1996-1073/13/22/6037auxiliary servicesbatterymicrogridsphotovoltaic generationsubstations |
| spellingShingle | Alejandra Tabares Norberto Martinez Lucas Ginez José F. Resende Nierbeth Brito John Fredy Franco Optimal Capacity Sizing for the Integration of a Battery and Photovoltaic Microgrid to Supply Auxiliary Services in Substations under a Contingency Energies auxiliary services battery microgrids photovoltaic generation substations |
| title | Optimal Capacity Sizing for the Integration of a Battery and Photovoltaic Microgrid to Supply Auxiliary Services in Substations under a Contingency |
| title_full | Optimal Capacity Sizing for the Integration of a Battery and Photovoltaic Microgrid to Supply Auxiliary Services in Substations under a Contingency |
| title_fullStr | Optimal Capacity Sizing for the Integration of a Battery and Photovoltaic Microgrid to Supply Auxiliary Services in Substations under a Contingency |
| title_full_unstemmed | Optimal Capacity Sizing for the Integration of a Battery and Photovoltaic Microgrid to Supply Auxiliary Services in Substations under a Contingency |
| title_short | Optimal Capacity Sizing for the Integration of a Battery and Photovoltaic Microgrid to Supply Auxiliary Services in Substations under a Contingency |
| title_sort | optimal capacity sizing for the integration of a battery and photovoltaic microgrid to supply auxiliary services in substations under a contingency |
| topic | auxiliary services battery microgrids photovoltaic generation substations |
| url | https://www.mdpi.com/1996-1073/13/22/6037 |
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