A Modified Incremental Conductance-Based Active Power Curtailment for Voltage Regulation in Highly PV-Fed Distribution Grids

Abdullah Said; Dr. Gul Muhammad; Muhammad Zakir

Authors

Abdullah Said University of Engineering and Technology Department of Power Engineering Peshawar, Pakistan
Dr. Gul Muhammad University of Engineering and Technology Department of Power Engineering Peshawar, Pakistan
Muhammad Zakir Dr. Khan Shaheed Degree College Department of Computer Science Kabal, Swat, Pakistan

Keywords:

Modified Incremental Conductance, PV Penetration, Voltage Violation, Active Power Curtailment, MPPT

Abstract

Increasing the penetration of photovoltaic (PV) systems in the distribution grid poses challenges, including voltage rise and potential violations during low load conditions or peak PV generation. This paper introduces a modified incremental conductance (IC) method to limit the active power injection from PV systems, mitigating voltage violations. A voltage-sensitive control loop is integrated into the IC method to improve its performance. This algorithm allows for the dynamic adjustment of active power output based on real-time voltage measurements from the grid, enabling precise voltage regulation while maintaining maximum power point tracking (MPPT) under normal conditions. When necessary, it shifts the operating point away from the maximum power point (MPP) to limit active power injection, ensuring voltage stays within safe limits. The proposed algorithm is less complex, cost-effective, and can be implemented in existing inverters using the IC method. The algorithm’s effectiveness is validated through Simulink/MATLAB simulations, using a setup consisting of a distribution grid with two solar PV-based distributed generators (DGs), each with a capacity of 100 kW.

References

JAEGER-WALDAU Arnulf, “PV Status Report 2019,” Publ. Off. Eur. Union, 2019, [Online]. Available: https://publications.jrc.ec.europa.eu/repository/handle/JRC118058

Y. H. Jinrui Tang, Defu Cai, Chengqing Yuan, Yuanchao Qiu, Xiangtian Deng, “Optimal configuration of battery energy storage systems using for rooftop residential photovoltaic to improve voltage profile of distributed network,” J. Eng., 2018, doi: https://doi.org/10.1049/joe.2018.8386.

M. S. S. J. D. Glover, T. J. Overbye, “Power system analysis & design,” Cengage Learn., 2017.

T. Aziz and N. Ketjoy, “PV Penetration Limits in Low Voltage Networks and Voltage Variations,” IEEE Access, vol. 5, pp. 16784–16792, 2017, doi: 10.1109/ACCESS.2017.2747086.

S. D. A. and F. A. A.-S. M. Shafiullah, “Grid Integration Challenges and Solution Strategies for Solar PV Systems: A Review,” IEEE Access, vol. 10, pp. 52233–52257, 2022, doi: 10.1109/ACCESS.2022.3174555.

T. S. U. Sk Abdul Aleem, S. M. Suhail Hussain, “A Review of Strategies to Increase PV Penetration Level in Smart Grids,” Energies, vol. 13, no. 3, p. 636, 2020, doi: https://doi.org/10.3390/en13030636.

F. Shahnia, R. Majumder, A. Ghosh, G. Ledwich, and F. Zare, “Sensitivity analysis of voltage imbalance in distribution networks with rooftop PVs,” IEEE PES Gen. Meet. PES 2010, 2010, doi: 10.1109/PES.2010.5590149.

M. Armendariz, D. Babazadeh, D. Brodén, and L. Nordström, “Strategies to improve the voltage quality in active low-voltage distribution networks using DSO’s assets,” IET Gener. Transm. Distrib., vol. 11, no. 1, pp. 73–81, Jan. 2017, doi: 10.1049/IET-GTD.2016.0428;WEBSITE:WEBSITE:IETRESEARCH;JOURNAL:JOURNAL:17518695;WGROUP:STRING:PUBLICATION.

M. Zeraati, M. E. Hamedani Golshan, and J. M. Guerrero, “Distributed Control of Battery Energy Storage Systems for Voltage Regulation in Distribution Networks with High PV Penetration,” IEEE Trans. Smart Grid, vol. 9, no. 4, pp. 3582–3593, Jul. 2018, doi: 10.1109/TSG.2016.2636217.

A. N. Nur Muhammad Alif Ramli, Siti Maherah Hussin, Dalila Mat Said, Norzanah Rosmin, “VOLTAGE REGULATION CONTROL USING BATTERY ENERGY STORAGE SYSTEM IN DISTRIBUTION NETWORK WITH HIGH PV PENETRATION STRENGTH,” UTM J. Teknol., vol. 86, no. 3, 2021, doi: https://doi.org/10.11113/jurnalteknologi.v83.17112.

S.-H. S. Soo-Bin Kim, “A Hybrid Reactive Power Control Method of Distributed Generation to Mitigate Voltage Rise in Low-Voltage Grid,” Energies, vol. 13, no. 8, p. 2078, 2020, doi: https://doi.org/10.3390/en13082078.

T. Tewari, A. Mohapatra, and S. Anand, “Coordinated control of OLTC and energy storage for voltage regulation in distribution network with high PV penetration,” IEEE Trans. Sustain. Energy, vol. 12, no. 1, pp. 262–272, Jan. 2021, doi: 10.1109/TSTE.2020.2991017.

J. E. Dilini Almeida, Jagadeesh Pasupuleti, “Comparison of Reactive Power Control Techniques for Solar PV Inverters to Mitigate Voltage Rise in Low-Voltage Grids,” Electronics, vol. 10, no. 13, p. 1569, 2021, doi: https://doi.org/10.3390/electronics10131569.

K. R. Babu and D. K. Khatod, “Smart Inverter-Based Distributed Volt/Var Control for Voltage Violation Mitigation of Unbalanced Distribution Networks,” IEEE Trans. Power Deliv., vol. 39, no. 3, pp. 1481–1490, Jun. 2024, doi: 10.1109/TPWRD.2024.3372603.

K. A. Khan, S. Shafiq, and M. Khalid, “A Strategy for Utilization of Reactive Power Capability of PV Inverters,” 2019 9th Int. Conf. Power Energy Syst. ICPES 2019, Dec. 2019, doi: 10.1109/ICPES47639.2019.9105613.

M. M. E.-S. Ahmed M.M. Nour, Ahmed Y. Hatata, Ahmed A. Helal, “Review on voltage-violation mitigation techniques of distribution networks with distributed rooftop PV systems,” IET Gener. Transm. Distrib., 2019, doi: https://doi.org/10.1049/iet-gtd.2019.0851.

C. N. Acosta Campas, M. Madrigal Martinez, and H. F. Ruiz Paredes, “PV Active Power Curtailment for Distribution Network Management,” IEEE Lat. Am. Trans., vol. 20, no. 7, pp. 2010–2019, Jul. 2021, doi: 10.1109/TLA.2021.9827474.

M. T. I. Muhammad Umair Akhtar, “Modeling and Simulation of Grid-Tied Three-Phase PV System in Lahore, Pakistan,” Eur. J. Electr. Eng. Comput. Sci., vol. 8, no. 1, 2024, [Online]. Available: https://www.ejece.org/index.php/ejece/article/view/603