PV Hosting Capacity in LV Networks by Combining Customer Voltage Sensitivity and Reliability Analysis
This paper investigates voltage regulation in low voltage (LV) networks under different loading conditions of a supply network, with increased levels of distributed generation, and in particular with a diverse range of locational solar photovoltaic (PV) penetration. This topic has been researched ex...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-08-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/16/16/5893 |
| _version_ | 1797584888619073536 |
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| author | Mikka Kisuule Mike Brian Ndawula Chenghong Gu Ignacio Hernando-Gil |
| author_facet | Mikka Kisuule Mike Brian Ndawula Chenghong Gu Ignacio Hernando-Gil |
| author_sort | Mikka Kisuule |
| collection | DOAJ |
| description | This paper investigates voltage regulation in low voltage (LV) networks under different loading conditions of a supply network, with increased levels of distributed generation, and in particular with a diverse range of locational solar photovoltaic (PV) penetration. This topic has been researched extensively, with beneficial impacts expected up to a certain point when reverse power flows begin to negatively impact customers connected to the distribution system. In this paper, a voltage-based approach that utilizes novel voltage-based reliability indices is proposed to analyse the risk and reliability of the LV supply feeder, as well as its PV hosting capacity. The proposed indices are directly comparable to results from a probabilistic reliability assessment. The operation of the network is simulated for different PV scenarios to investigate the impacts of increased PV penetration, the location of PV on the feeder, and loading conditions of the MV supply network on the reliability results. It can be seen that all reliability indices improve with increased PV penetration levels when the supply network is heavily loaded and conversely deteriorate when the supply network is lightly loaded. Moreover, bus voltages improve when an on-load tap changer is fitted at the secondary trans-former which leads to better reliability performance as the occurrence and duration of low voltage violations are reduced in all PV scenarios. The approach in this paper is opposed to the conventional reliability assessment, which considers sustained interruptions to customers caused by failure of network components, and thus contributes to a comprehensive analysis of quality of service by considering transient events (i.e., voltage related) in the LV distribution network. |
| first_indexed | 2024-03-10T23:58:10Z |
| format | Article |
| id | doaj.art-4585bab1857a45d1b411d040707ad308 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T23:58:10Z |
| publishDate | 2023-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-4585bab1857a45d1b411d040707ad3082023-11-19T00:55:43ZengMDPI AGEnergies1996-10732023-08-011616589310.3390/en16165893PV Hosting Capacity in LV Networks by Combining Customer Voltage Sensitivity and Reliability AnalysisMikka Kisuule0Mike Brian Ndawula1Chenghong Gu2Ignacio Hernando-Gil3Department of Electrical and Computer Engineering, College of Engineering Design Art and Technology, Makerere University, Kampala P.O. Box 7062, UgandaResearch and Development, Energy Division, Orijtech Inc., Palo Alto, CA 94301, USACentre for Sustainable Power Distribution, Department of Electronic and Electrical Engineering, University of Bath, Bath BA2 7AY, UKESTIA Institute of Technology, University of Bordeaux, 64210 Bidart, FranceThis paper investigates voltage regulation in low voltage (LV) networks under different loading conditions of a supply network, with increased levels of distributed generation, and in particular with a diverse range of locational solar photovoltaic (PV) penetration. This topic has been researched extensively, with beneficial impacts expected up to a certain point when reverse power flows begin to negatively impact customers connected to the distribution system. In this paper, a voltage-based approach that utilizes novel voltage-based reliability indices is proposed to analyse the risk and reliability of the LV supply feeder, as well as its PV hosting capacity. The proposed indices are directly comparable to results from a probabilistic reliability assessment. The operation of the network is simulated for different PV scenarios to investigate the impacts of increased PV penetration, the location of PV on the feeder, and loading conditions of the MV supply network on the reliability results. It can be seen that all reliability indices improve with increased PV penetration levels when the supply network is heavily loaded and conversely deteriorate when the supply network is lightly loaded. Moreover, bus voltages improve when an on-load tap changer is fitted at the secondary trans-former which leads to better reliability performance as the occurrence and duration of low voltage violations are reduced in all PV scenarios. The approach in this paper is opposed to the conventional reliability assessment, which considers sustained interruptions to customers caused by failure of network components, and thus contributes to a comprehensive analysis of quality of service by considering transient events (i.e., voltage related) in the LV distribution network.https://www.mdpi.com/1996-1073/16/16/5893low voltage supplyon-load tap changerPV hosting capacityrisk and reliability assessmentvoltage sensitivity analysis |
| spellingShingle | Mikka Kisuule Mike Brian Ndawula Chenghong Gu Ignacio Hernando-Gil PV Hosting Capacity in LV Networks by Combining Customer Voltage Sensitivity and Reliability Analysis Energies low voltage supply on-load tap changer PV hosting capacity risk and reliability assessment voltage sensitivity analysis |
| title | PV Hosting Capacity in LV Networks by Combining Customer Voltage Sensitivity and Reliability Analysis |
| title_full | PV Hosting Capacity in LV Networks by Combining Customer Voltage Sensitivity and Reliability Analysis |
| title_fullStr | PV Hosting Capacity in LV Networks by Combining Customer Voltage Sensitivity and Reliability Analysis |
| title_full_unstemmed | PV Hosting Capacity in LV Networks by Combining Customer Voltage Sensitivity and Reliability Analysis |
| title_short | PV Hosting Capacity in LV Networks by Combining Customer Voltage Sensitivity and Reliability Analysis |
| title_sort | pv hosting capacity in lv networks by combining customer voltage sensitivity and reliability analysis |
| topic | low voltage supply on-load tap changer PV hosting capacity risk and reliability assessment voltage sensitivity analysis |
| url | https://www.mdpi.com/1996-1073/16/16/5893 |
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