RESEARCH AND SELECTION OF REACTIVE POWER CONTROL METHODS FOR LARGE SCALE SOLAR POWER SOURCE IN URBAN DISTRIBUTION NETWORK

Vũ Hoàng Giang; Nguyễn Hữu Đức

doi:10.34238/tnu-jst.9742

RESEARCH AND SELECTION OF REACTIVE POWER CONTROL METHODS FOR LARGE SCALE SOLAR POWER SOURCE IN URBAN DISTRIBUTION NETWORK

About this article

Received: 21/02/24 Revised: 31/05/24 Published: 31/05/24

Authors

1. Vu Hoang Giang , Electric Power University
2. Nguyen Huu Duc, Electric Power University

Abstract

With the rapid development of rooftop solar power sources in the past 5 years in Vietnam and the strong orientation of developing these sources in the future according to the Power Development Plan 8, many challenges in distribution grid operation have arisen. One of the issues is to ensure voltage tolerance when connecting to the rooftop solar power source. This paper presents methods for controlling reactive power for rooftop solar power sources, thereby helping to ensure that voltage at the point of connection (PCC) is within the allowed limits according to relevant regulations. The methods with their advantages and disadvantages are analyzed. There are three methods such as the reactive power control method with constant coefficient; the reactive power control method as a function of the active power output of solar power sources; and the method regulating reactive power as a function of voltage at the PCC point. Through analysis and evaluation, the third method is selected. Matlab/Simulink software was used to simulate and realize the effectiveness of this control method. The simulation results show the effectiveness of the method in ensuring that voltage at the PCC point is within the allowable limit.

Keywords

Rooftop photovoltaics; Reactive power control; Power system interconnection; Power system modeling; Distributed power generation

Full Text:

PDF (Tiếng Việt)

References

[1] P.-H. Nguyen and H.-G. Vu, "Operation Schemes of Medium Voltage Distribution Networks with High Penetration of Distributed Solar Photovoltaics," in 2023 Asia Meeting on Environment and Electrical Engineering (EEE-AM), 2023, pp. 1–5, doi: 10.1109/EEE-AM58328.2023.10395035.

[2] T. A. Nguyen and M. A. Nguyen, "Optimizing position and injecting power of the pv systems for power loss reduction on the distribution power grid," TNU J. Sci. Technol., vol. 227, no. 16, pp. 207–215, 2022, doi: 10.34238/tnu-jst.6651.

[3] T. T. H. Ma, "Evaluation impact of solar pv system on the overcurrent protective relays on medium voltage distributed lines," EPU J. Sci. Technol. Energy, no. 29, pp. 64–71, 2022.

[4] H.-G. Vu and D. N. Huu, "Impact of Rooftop Photovoltaic System on the Voltage of Urban Distribution Network: A Case Study in Vietnam," in 2023 Asia Meeting on Environment and Electrical Engineering (EEE-AM), 2023, pp. 1–6, doi: 10.1109/EEE-AM58328.2023.10394927.

[5] J. C. Hernández, A. Medina, and F. Jurado, "Impact comparison of PV system integration into rural and urban feeders," Energy Convers. Manag., vol. 49, no. 6, pp. 1747–1765, 2008.

[6] IEEE, "IEEE Standard for Interconnection and Interoperability of Distributed Energy Resources with Associated Electric Power Systems Interfaces," in IEEE Std 1547-2018, pp.1-138, April 6, 2018, doi: 10.1109/IEEESTD.2018.8332112.

[7] D. T. Nguyen, V. L. Le, V. L. Do, and H. D. Nguyen, "Building a model of inverter capable of controlling active power and reactive power in grid-connected solar power system when a short-circuit fault occurs," J. Sci. Technol. - Hanoi Univ. Ind., vol. 56, no. 4, pp. 31–37, 2020.

[8] Q. T. Nguyen, D. T. Nguyen, V. L. Do, and V. N. Ninh, "Reactive power control with three-phase inverter for grid-connected photovoltaic system," J. Sci. Technol. - Hanoi Univ. Ind., vol. 57, no. 1, pp. 7–11, 2021.

[9] T. M. C. Le, D. T. Le, and T. L. Nguyen, "Voltage control of PV systems in the distribution network," J. Sci. Technol. Univ. Danang, vol. 9, no. 118, pp. 9–13, 2017.

[10] H. M. Nguyen and V. D. Tang, "An Application of Fuzzy Control to Control Roof-Top Solar Grid," J. Sci. Technol. Univ. Danang, vol. 20, no. 2, pp. 102–108, 2022.

[11] D. Almeida, J. Pasupuleti, and J. Ekanayake, "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.

[12] M. J. Reno, R. J. Broderick, and S. Grijalva, "Smart inverter capabilities for mitigating over-voltage on distribution systems with high penetrations of PV," in 2013 IEEE 39th Photovoltaic Specialists Conference (PVSC), Tampa, FL, USA, 2013, pp. 3153–3158.

[13] M. K. La, N. M. Truong, K. P. Tran, and K. D. Truong, "An approach for establishing the load duration curves in Vietnam electric power disrtibution networks," J. Sci. Technol. Tech. Univ., no. 91, pp. 36–40, 2012.

[14] Vietnam Minister of Industry and Trade, "Circular No. 39/2022/TT-BCT on Amendments and supplements to circulars no. 25/2016/TT-BCT; no. 39/2015/TT-BCT; no. 30/2019/TT-BCT; no. 25/2016/TT-BCT; no. 39/2015/TT-BCT of Minister of industry and trade," December 30, 2022.

[15] H. G. Vu and T. T. H. Ma, "A Study of Inverter Open-Circuit Fault in Grid Connected Photovoltaic Systems: Influence on Output Power and Detection Method," Int. Rev. Model. Simulations, vol. 15, no. 3, pp. 154–161, 2022, doi: 10.15866/iremos.v15i3.21814.

DOI: https://doi.org/10.34238/tnu-jst.9742

Refbacks

There are currently no refbacks.



Remember me