The growing demand for energy, driven by rapid economic development, necessitates higher electricity consumption. However, conventional energy systems relying on fossil fuels present environmental challenges, prompting a shift towards renewable energy sources. In Kosovo, coal-fired power plants dominate electricity production, highlighting the need for cleaner alternatives. Worldwide efforts are underway to increase the efficiency of photovoltaic systems using sustainable materials, essential for ecological and human health. Solar and wind energy are emerging as sustainable alternatives to traditional fossil fuels. However, global concerns about energy security and environmental sustainability are driving countries to prioritize renewable energy development.
In Kosovo, the integration of renewable energy sources, such as wind and solar energy, is progressing rapidly. However, challenges such as voltage stability and power losses need to be addressed. Distributed generation offers a solution by increasing energy reliability and reducing greenhouse gas emissions. Further research is needed to assess the technical, economic, and environmental implications of integrating renewable resources into Kosovo's energy system, focusing on power quality, system reliability, and voltage stability. The research focused on the eastern region of the country, operating at the 110 kV substation level. Challenges in energy quality arise due to the lack of 400 kV supply and the continuous increase in energy consumption, especially in the Gjilan area. This paper investigated integrating renewable energy, especially wind and solar sources, into the medium- and long-term plans at the Gjilan 5 substation to enhance energy quality in the area. Successful integration requires detailed analysis of energy flows, considering the impact of photovoltaics (PVs) on distribution system operation and stability. To simulate and analyze the effects of renewables on the transmission system, voltage profile, and power losses, a case study was conducted using ETAP software. The simulation results present a comparison between scenarios before and after integrating renewable systems to improve energy quality in the identified area.
Citation: Arben Gjukaj, Rexhep Shaqiri, Qamil Kabashi, Vezir Rexhepi. Renewable energy integration and distributed generation in Kosovo: Challenges and solutions for enhanced energy quality[J]. AIMS Energy, 2024, 12(3): 686-705. doi: 10.3934/energy.2024032
The growing demand for energy, driven by rapid economic development, necessitates higher electricity consumption. However, conventional energy systems relying on fossil fuels present environmental challenges, prompting a shift towards renewable energy sources. In Kosovo, coal-fired power plants dominate electricity production, highlighting the need for cleaner alternatives. Worldwide efforts are underway to increase the efficiency of photovoltaic systems using sustainable materials, essential for ecological and human health. Solar and wind energy are emerging as sustainable alternatives to traditional fossil fuels. However, global concerns about energy security and environmental sustainability are driving countries to prioritize renewable energy development.
In Kosovo, the integration of renewable energy sources, such as wind and solar energy, is progressing rapidly. However, challenges such as voltage stability and power losses need to be addressed. Distributed generation offers a solution by increasing energy reliability and reducing greenhouse gas emissions. Further research is needed to assess the technical, economic, and environmental implications of integrating renewable resources into Kosovo's energy system, focusing on power quality, system reliability, and voltage stability. The research focused on the eastern region of the country, operating at the 110 kV substation level. Challenges in energy quality arise due to the lack of 400 kV supply and the continuous increase in energy consumption, especially in the Gjilan area. This paper investigated integrating renewable energy, especially wind and solar sources, into the medium- and long-term plans at the Gjilan 5 substation to enhance energy quality in the area. Successful integration requires detailed analysis of energy flows, considering the impact of photovoltaics (PVs) on distribution system operation and stability. To simulate and analyze the effects of renewables on the transmission system, voltage profile, and power losses, a case study was conducted using ETAP software. The simulation results present a comparison between scenarios before and after integrating renewable systems to improve energy quality in the identified area.
[1] | Islam A, Teo SH, Ng CH, et al. (2023) Progress in recent sustainable materials for greenhouse gas (NOx and SOx) emission mitigation. Prog Mater Sci 132: 101033. https://doi.org/10.1016/j.pmatsci.2022.101033 doi: 10.1016/j.pmatsci.2022.101033 |
[2] | Teo SH, Islam A, Taufiq-Yap YH, et al. (2021) Introducing the novel composite photocatalysts to boost the performance of hydrogen (H2) production. J Cleaner Prod, 313. https://doi.org/10.1016/j.jclepro.2021.127909 doi: 10.1016/j.jclepro.2021.127909 |
[3] | IEA (International Energy Agency 2021), Renewables 2021, IEA, Paris. Available from: https://www.iea.org/reports/renewables-2021, License: CC BY 4.0. |
[4] | Iweh CD, Gyamfi S, Tanyi E, et al. (2021) Distributed generation and renewable energy integration into the grid: Prerequisites, push factors, practical options, issues and merits. Energies 14: 5375. https://doi.org/10.3390/en14175375 doi: 10.3390/en14175375 |
[5] | Nadeem TB, Siddiqui M, Khalid M, et al. (2023) Distributed energy systems: A review of classification, technologies, applications, and policies. Energy Strategy Rev 48: 101096. https://doi.org/10.1016/j.esr.2023.101096 doi: 10.1016/j.esr.2023.101096 |
[6] | Patnaik S, Nayak MR, Viswavandya M (2022) Smart deployment of energy storage and renewable energy sources for improving distribution system efficacy. AIMS Electron Electr Eng 6: 397–417. https://doi.org/10.3934/electreng.2022024 doi: 10.3934/electreng.2022024 |
[7] | Chen YT, Knüpfer K, Esteban M, et al. (2023) Analysis of the impact of offshore wind power on the Japanese energy grid. AIMS Energy 11: 110–134. https://doi.org/10.3934/energy.2023006 doi: 10.3934/energy.2023006 |
[8] | Ramos A, Magalhães F, Neves D, et al. (2023) Wind energy sustainability in Europe—A review of knowledge gaps, opportunities and circular strategies. Green Finance 5: 562–602. https://doi.org/10.3934/GF.2023022 doi: 10.3934/GF.2023022 |
[9] | Solomon AA, Child M, Caldera U, et al. (2020) Exploiting wind-solar resource complementarity to reduce energy storage need. AIMS Energy 8: 749–770. https://doi.org/10.3934/energy.2020.5.749 doi: 10.3934/energy.2020.5.749 |
[10] | Slusarewicz JH, Cohan DS (2018) Assessing solar and wind complementarity in Texas. Renewables, 5. https://doi.org/10.1186/s40807-018-0054-3 doi: 10.1186/s40807-018-0054-3 |
[11] | Solomon AA, Kammen DM, Callaway D (2016) Investigating the impact of wind-solar complementarities on energy storage requirement and the corresponding supply reliability criteria. Appl Energy 168: 130–145. https://doi.org/10.1016/j.apenergy.2016.01.070 doi: 10.1016/j.apenergy.2016.01.070 |
[12] | Kataray T, Nitesh B, Yarram B, et al. (2023) Integration of smart grid with renewable energy sources: Opportunities and challenges—A comprehensive review. Sustainable Energy Technol Assess 58: 103363. https://doi.org/10.1016/j.seta.2023.103363 doi: 10.1016/j.seta.2023.103363 |
[13] | Qaisi ZA, Alsafasfeh Q, Harb A (2018) Stability impact of integrated small scale hybrid (PV/Wind) system with electric distribution network. AIMS Energy 6: 832–845. https://doi.org/10.3934/energy.2018.5.832 doi: 10.3934/energy.2018.5.832 |
[14] | Ludwig D, Breyer C, Solomon AA, et al. (2020) Evaluation of an onsite integrated hybrid PV-Wind power plant. AIMS Energy 8: 988–1006. https://doi.org/10.3934/energy.2020.5.988 doi: 10.3934/energy.2020.5.988 |
[15] | Solomon AA (2019) Large scale photovoltaics and the future energy system requirement. AIMS Energy 7: 600–618. https://doi.org/10.3934/energy.2019.5.600 doi: 10.3934/energy.2019.5.600 |
[16] | Herez A, Jaber H, Hage HE, et al. (2023) A review on the classifications and applications of solar photovoltaic technology. AIMS Energy 11: 1102–1130. https://doi.org/10.3934/energy.2023051 doi: 10.3934/energy.2023051 |
[17] | Georgilakis PS, Hatziargyriou ND (2013) Optimal distributed generation placement in power distribution networks: Models, methods, and future research. IEEE Trans Power Syst 28: 3420–3428. https://doi.org/10.1109/tpwrs.2012.2237043 doi: 10.1109/tpwrs.2012.2237043 |
[18] | Annual Report 2022—ERO (Energy Regulatory Office), (2023). Available from: https://www.ero-ks.org/zrre/en/publikimet/raportet-vjetore. |
[19] | Reddy GH, Chakrapani P, Goswami AK, et al. (2017) Optimal distributed generation placement in distribution system to improve reliability and critical loads pick up after natural disasters. Eng Sci Technol, Int J 20: 825–832. https://doi.org/10.1016/j.jestch.2017.05.001 doi: 10.1016/j.jestch.2017.05.001 |
[20] | Razavi SE, Rahimi E, Javadi MS, et al. (2019) Impact of distributed generation on protection and voltage regulation of distribution systems: A review. Renewable Sustainable Energy Rev 105: 157–167. https://doi.org/10.1016/j.rser.2019.01.050 doi: 10.1016/j.rser.2019.01.050 |
[21] | Vita V, Alimardan T, Ekonomou L (2015) The impact of distributed generation in the distribution networks' voltage profile and energy losses. 2015 IEEE European Modelling Symposium (EMS) Madrid, Spain, 260–265, https://doi.org/10.1109/EMS.2015.46 |
[22] | Leccisi E, Raugei M, Fthenakis V (2018) The energy performance of potential scenarios with large-scale PV deployment in Chile—A dynamic analysis. 2018 IEEE 7th World Conference on Photovoltaic Energy Conversion (WCPEC) (A Joint Conference of 45th IEEE PVSC, 28th PVSEC & 34th EU PVSEC), Waikoloa, HI, USA, 2441–2446. https://doi.org/10.1109/PVSC.2018.8547293 |
[23] | Rasool MH, Taylan O, Perwez U, et al. (2023) Comparative assessment of multi-objective optimization of hybrid energy storage system considering grid balancing. Renewable Energy 216: 119107. https://doi.org/10.1016/j.renene.2023.119107 doi: 10.1016/j.renene.2023.119107 |
[24] | Malik F, Khan M, Rahman T, et al. (2024) A comprehensive review on voltage stability in wind-integrated power systems. Energies 17: 644. https://doi.org/10.3390/en17030644 doi: 10.3390/en17030644 |
[25] | Javadi M, Liang X, Gong Y, et al. (2022) Battery energy storage technology in renewable energy integration: A review. 2022 IEEE Canadian Conference on Electrical and Computer Engineering (CCECE), Halifax, NS, Canada, 435–440. https://doi.org/10.1109/CCECE49351.2022.9918504 |
[26] | ETAP—Electrical Power System Analysis & Operation Software(Demo version). Available from: https://etap.com. |
[27] | Sereeter B, Vuik C, Witteveen C (2019) On a comparison of Newton—Raphson solvers for power flow problems. J Comput Appl Math 360: 157–169. https://doi.org/10.1016/j.cam.2019.04.007 doi: 10.1016/j.cam.2019.04.007 |
[28] | Ezhiljenekkha GB, MarsalineBeno M (2020) Review of power quality issues in solar and wind energy Mater Today: Proc 24: 2137–2143. https://doi.org/10.1016/j.matpr.2020.03.670 doi: 10.1016/j.matpr.2020.03.670 |
[29] | Mahela OP, Khan B, Alhelou H, et al. (2020) Assessment of power quality in the utility grid integrated with wind energy generation. IET Power Electron 13: 2917–2925. https://doi.org/10.1049/iet-pel.2019.1351 doi: 10.1049/iet-pel.2019.1351 |
[30] | Liang X (2016) Emerging power quality challenges due to integration of renewable energy sources. IEEE Trans Ind Appl 53: 855–866. https://doi.org/10.1109/TIA.2016.2626253 doi: 10.1109/TIA.2016.2626253 |
[31] | Razmi D, Lu T, Papari B, et al. (2023) An overview on power quality issues and control strategies for distribution networks with the presence of distributed generation resources. IEEE Access 11: 10308–10325. https://doi.org/10.1109/ACCESS.2023.3238685 doi: 10.1109/ACCESS.2023.3238685 |
[32] | Naderi Y, Hosseini SH, Zadeh SG, et al. (2018) An overview of power quality enhancement techniques applied to distributed generation in electrical distribution networks. Renewable Sustainable Energy Rev 93: 201–214. https://doi.org/10.1016/j.rser.2018.05.013 doi: 10.1016/j.rser.2018.05.013 |
[33] | Toumi T, Allali A, Abdelkhalek O, et al. (2021) Voltage quality improvement in electrical distribution networks using dynamic voltage restorers: design, simulation and experimental tests of a robust controller. Electr Eng 103: 1661–1678. https://doi.org/10.1007/s00202-020-01158-5 doi: 10.1007/s00202-020-01158-5 |
[34] | Wang B, Sun Y, Lu F, et al. (2015) The calculation and analysis of distribution network loss with photovoltaic power generation connected. Proceedings of the 3rd International Conference on Advances in Energy and Environmental Science 2015. https://doi.org/10.2991/icaees-15.2015.100 doi: 10.2991/icaees-15.2015.100 |
[35] | Hemdan NGA, Kurrat M (2008) Distributed generation location and capacity effect on voltage stability of distribution networks. 2008 Annual IEEE Student Paper Conference, AISPC, 1–5. https://doi.org/10.1109/AISPC.2008.4460571 doi: 10.1109/AISPC.2008.4460571 |
[36] | Bründlinger R (2019) Grid Codes in Europe—Overview on the current requirements in European codes and national interconnection standards. Available from: https://www.researchgate.net/publication/338800967_Grid_Codes_in_Europe__Overview_on_the_current_requirements_in_European_codes_and_national_interconnection_standards. |
[37] | Yuan W, Yuan X, Xu L, et al. (2023) Harmonic loss analysis of low-voltage distribution network integrated with distributed photovoltaic. Sustainability 15: 4334. https://doi.org/10.3390/su15054334 doi: 10.3390/su15054334 |
[38] | Ranjbar A, Vig S, Sharma K (2022) Performance analysis of grid connected distributed generation sources (DGS) using ETAP. Cognit Inf Soft Comput, 105–114. https://doi.org/10.1007/978-981-16-8763-1_10 doi: 10.1007/978-981-16-8763-1_10 |
[39] | Prasad A, Singh O (2022) Analysis of software tools used for load-flow studies. 4th International Conference on Advances in Computing, Communication Control and Networking (ICAC3N), Greater Noida, India, 2400–2405. https://doi.org/10.1109/ICAC3N56670.2022.10074587 |
[40] | Herez A, Jaber H, Hage HE, et al. (2023) A review on the classifications and applications of solar photovoltaic technology. AIMS Energy 11: 1102–1130. https://doi.org/10.3934/energy.2023051 doi: 10.3934/energy.2023051 |
[41] | Hossain MS, Shenashen MA, Awual ME, et al. (2024) Benign separation, adsorption, and recovery of rare-earth Yb(Ⅲ) ions with specific ligand-based composite adsorbent. Process Saf Environ Prot 185: 367–374. https://doi.org/10.1016/j.psep.2024.03.026 doi: 10.1016/j.psep.2024.03.026 |
[42] | Xiao H, Lai W, Chen A, et al. (2024) Application of photovoltaic and solar thermal technologies in buildings: A mini-review. Coatings 14: 257. https://doi.org/10.3390/coatings14030257 doi: 10.3390/coatings14030257 |
[43] | Majewski P, Deng R, Dias PR, et al. (2023) Product stewardship considerations for solar photovoltaic panels. AIMS Energy 11: 140–155. https://doi.org/10.3934/energy.2023008 doi: 10.3934/energy.2023008 |
[44] | Hassan Q, Hsu CY, MOUNICH K, et al. (2024) Enhancing smart grid integrated renewable distributed generation capacities: Implications for sustainable energy transformation. Sustainable Energy Technol Assess 66: 103793. https://doi.org/10.1016/j.seta.2024.103793 doi: 10.1016/j.seta.2024.103793 |
[45] | Rasool MH, Taylan O, Perwez U, et al. (2023) Comparative assessment of multi-objective optimization of hybrid energy storage system considering grid balancing. Renewable Energy 216: 119107. https://doi.org/10.1016/j.renene.2023.119107 doi: 10.1016/j.renene.2023.119107 |
[46] | Li J, Shi L, Fu H (2024) Multi-objective short-term optimal dispatching of cascade hydro-wind-solar-thermal hybrid generation system with pumped storage hydropower. Energies 17: 98. https://doi.org/10.3390/en17010098 doi: 10.3390/en17010098 |
[47] | Leccisi E, Raugei M, Fthenakis V (2018) The energy performance of potential scenarios with large-scale PV deployment in Chile—a dynamic analysis. 2018 IEEE 7th World Conference on Photovoltaic Energy Conversion (WCPEC) (A Joint Conference of 45th IEEE PVSC, 28th PVSEC & 34th EU PVSEC), Waikoloa, HI, USA, 2441–2446, https://doi.org/10.1109/PVSC.2018.8547293 |
[48] | Singh P, Arora K, Rathore UC, et al. (2024) Comparative study of controllers in battery energy storage system integrated with doubly fed induction generator-based wind energy conversion system for power quality improvement. Energy Rep 11: 4587–4600. https://doi.org/10.1016/j.egyr.2024.04.020 doi: 10.1016/j.egyr.2024.04.020 |