Analysis of Dynamic Interactions Between Reactive Compensation and Voltage Stability in THT Networks with SVC

Amos Omboua Eyandzi; Rodolphe Gomba; Nianga-Apila; Timothee Nsongo; Ursula Vanelie Kani Mboyo

doi:doi:10.11648/j.epes.20251403.11

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Analysis of Dynamic Interactions Between Reactive Compensation and Voltage Stability in THT Networks with SVC

Amos Omboua Eyandzi^*

, Rodolphe Gomba, Nianga-Apila

, Timothee Nsongo, Ursula Vanelie Kani Mboyo

Published in American Journal of Electrical Power and Energy Systems (Volume 14, Issue 3)

Received: 13 March 2025 Accepted: 18 April 2025 Published: 3 June 2025

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Abstract

This paper investigates the impact of inte-grating a 35 MW industrial load into an electrical transmission network, with a focus on the role of the Static Var Compensator (SVC) in voltage regulation and system performance enhancement. The added load induces a voltage drop below 0.9 p.u., threatening dynamic stability and potentially triggering unwanted phenomena such as electromechanical oscillations or protective device misoperations. These disturbances are further exacerbated by a decrease in the power factor due to increased phase shift between voltage and current, leading to higher system losses. The SVC demonstrates high effectiveness in mitigating these effects by dynamically injecting reactive power and restoring voltage levels close to nominal values. Its thyristor-controlled operation provides fast and adaptive compensation, outperforming traditional fixed capacitors and reactors in transient response. Using real-world data from the Congolese power grid, this study employs simulation-based scenarios to evaluate the SVC’s performance under local operating conditions. Results confirm that optimised reactive power com-pensation enhances grid reliability and facilitates the integration of heavy industrial loads. Recommendations are proposed for efficient SVC deployment in developing electrical infrastructures.

Published in	American Journal of Electrical Power and Energy Systems (Volume 14, Issue 3)
DOI	10.11648/j.epes.20251403.11
Page(s)	45-63
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2025. Published by Science Publishing Group

Keywords

Network Stability, SVC, Reactive Power Compensation, Congolese Power Grid, FACTS, Dynamic Simulation

References

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[3]	Pravin Chopade, Marwan Bikdash, Ibraheem Kateeb, and Ajit D Kelkar. Reactive power management and voltage control of large transmission system using svc (static var compensator). In 2011 Proceedings of IEEE Southeastcon, pages 85-90. IEEE, 2011.
[4]	Mahdiyeh Eslami, Hussain Shareef, Azah Mohamed, and Mohammad Khajehzadeh. A survey on flexible ac transmission systems (facts). Organ, 1: 12, 2012.
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[6]	Gabriela Glanzmann. Facts: flexible alternating current transmission systems. Technical report, ETH Zurich, 2005.
[7]	Mathurin Gogom, Anedi Oko Ganongo, Nianga Apila, and Desire Lilonga-Boyenga. Optimization of power transit through a double-term line term by the upfc. Science Journal of Energy Engineering, 8(4): 44-53, 2020.
[8]	Narain G.. Hingorani and Laszlo Gyugyi. Understanding FACTS: concepts and technology of flexible AC transmission systems. Wiley-IEEE Press, 2000.
[9]	Lamia Kartobi. Optimisation de la synthèse des FACTS par les algorithmes: Génétiques et les essaims particulaires pour le contrôle des réseaux électriques. PhD thesis, Ecole Nationale Polytechnique, 2006.
[10]	NABM Le, W Mohd Nazmi bin W Musa, Nurlida binti Ismail, Nurul Huda binti Ishak, and Nur Ashida binti Salim. The modeling of svc for the voltage control in power system. Indonesian Journal of Electrical Engineering and Com-puter Science, 6(3): 513-519, 2017.
[11]	Pr Cherif.Fetha. Cours qualite de l’energie electrique. Département d’électrotechnique Faculté de Technologie Université Batna 2. Annee 2023/2024.
[12]	Mohammed Ahsan Adib Murad, Georgios Tzounas, Muyang Liu, and Federico Milano. Frequency control through voltage regulation of power system using svc devices. In 2019 IEEE Power & Energy Society General Meeting (PESGM), pages 1-5. IEEE, 2019.
[13]	Therese Uzochukwuamaka Okeke and Ramy Georgious Zaher. Flexible ac transmission systems (facts). In 2013 international conference on new concepts in smart cities: fostering public and private alliances (SmartMILE), pages 1-4. IEEE, 2013.
[14]	Mario-Alberto Rios. Modelisation pour analyses dynamiques des reseaux electriques avec compensateurs de puissance reactive-SVC. PhD thesis, Institut National Polytechnique de Grenoble-INPG, 1998.
[15]	Nang Sabai, Hnin Nandar Maung, and Thida Win. Voltage control and dynamic performance of power transmis-sion system using static var compensator. World Academy of Science, Engineering and Technology, 42: 426, 2008.
[16]	Arun Singh SENGAR, Raunak CHHAJER, Ghaeth FANDI, and Famous O IGBINOVIA. Comparison of the operational theory and features ofsvc and statcom. 2015.
[17]	Nunna Sushma. Comparative analysis of statcom and svc for reactive power enhancement in a long transmission line. International Journal of Computational Science and Engineering, 6(6): 1579-82, 2018.

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APA Style

Eyandzi, A. O., Gomba, R., Nianga-Apila, Nsongo, T., Mboyo, U. V. K. (2025). Analysis of Dynamic Interactions Between Reactive Compensation and Voltage Stability in THT Networks with SVC. American Journal of Electrical Power and Energy Systems, 14(3), 45-63. https://doi.org/10.11648/j.epes.20251403.11

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ACS Style

Eyandzi, A. O.; Gomba, R.; Nianga-Apila; Nsongo, T.; Mboyo, U. V. K. Analysis of Dynamic Interactions Between Reactive Compensation and Voltage Stability in THT Networks with SVC. Am. J. Electr. Power Energy Syst. 2025, 14(3), 45-63. doi: 10.11648/j.epes.20251403.11

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AMA Style

Eyandzi AO, Gomba R, Nianga-Apila, Nsongo T, Mboyo UVK. Analysis of Dynamic Interactions Between Reactive Compensation and Voltage Stability in THT Networks with SVC. Am J Electr Power Energy Syst. 2025;14(3):45-63. doi: 10.11648/j.epes.20251403.11

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@article{10.11648/j.epes.20251403.11,
  author = {Amos Omboua Eyandzi and Rodolphe Gomba and Nianga-Apila and Timothee Nsongo and Ursula Vanelie Kani Mboyo},
  title = {Analysis of Dynamic Interactions Between Reactive Compensation and Voltage Stability in THT Networks with SVC},
  journal = {American Journal of Electrical Power and Energy Systems},
  volume = {14},
  number = {3},
  pages = {45-63},
  doi = {10.11648/j.epes.20251403.11},
  url = {https://doi.org/10.11648/j.epes.20251403.11},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.epes.20251403.11},
  abstract = {This paper investigates the impact of inte-grating a 35 MW industrial load into an electrical transmission network, with a focus on the role of the Static Var Compensator (SVC) in voltage regulation and system performance enhancement. The added load induces a voltage drop below 0.9 p.u., threatening dynamic stability and potentially triggering unwanted phenomena such as electromechanical oscillations or protective device misoperations. These disturbances are further exacerbated by a decrease in the power factor due to increased phase shift between voltage and current, leading to higher system losses. The SVC demonstrates high effectiveness in mitigating these effects by dynamically injecting reactive power and restoring voltage levels close to nominal values. Its thyristor-controlled operation provides fast and adaptive compensation, outperforming traditional fixed capacitors and reactors in transient response. Using real-world data from the Congolese power grid, this study employs simulation-based scenarios to evaluate the SVC’s performance under local operating conditions. Results confirm that optimised reactive power com-pensation enhances grid reliability and facilitates the integration of heavy industrial loads. Recommendations are proposed for efficient SVC deployment in developing electrical infrastructures.},
 year = {2025}
}

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TY  - JOUR
T1  - Analysis of Dynamic Interactions Between Reactive Compensation and Voltage Stability in THT Networks with SVC
AU  - Amos Omboua Eyandzi
AU  - Rodolphe Gomba
AU  - Nianga-Apila
AU  - Timothee Nsongo
AU  - Ursula Vanelie Kani Mboyo
Y1  - 2025/06/03
PY  - 2025
N1  - https://doi.org/10.11648/j.epes.20251403.11
DO  - 10.11648/j.epes.20251403.11
T2  - American Journal of Electrical Power and Energy Systems
JF  - American Journal of Electrical Power and Energy Systems
JO  - American Journal of Electrical Power and Energy Systems
SP  - 45
EP  - 63
PB  - Science Publishing Group
SN  - 2326-9200
UR  - https://doi.org/10.11648/j.epes.20251403.11
AB  - This paper investigates the impact of inte-grating a 35 MW industrial load into an electrical transmission network, with a focus on the role of the Static Var Compensator (SVC) in voltage regulation and system performance enhancement. The added load induces a voltage drop below 0.9 p.u., threatening dynamic stability and potentially triggering unwanted phenomena such as electromechanical oscillations or protective device misoperations. These disturbances are further exacerbated by a decrease in the power factor due to increased phase shift between voltage and current, leading to higher system losses. The SVC demonstrates high effectiveness in mitigating these effects by dynamically injecting reactive power and restoring voltage levels close to nominal values. Its thyristor-controlled operation provides fast and adaptive compensation, outperforming traditional fixed capacitors and reactors in transient response. Using real-world data from the Congolese power grid, this study employs simulation-based scenarios to evaluate the SVC’s performance under local operating conditions. Results confirm that optimised reactive power com-pensation enhances grid reliability and facilitates the integration of heavy industrial loads. Recommendations are proposed for efficient SVC deployment in developing electrical infrastructures.
VL  - 14
IS  - 3
ER  -

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Author Information

Amos Omboua Eyandzi

Polytechnic Superior National School (ENSP), Marien Ngouabi University, Brazzaville, Congo

Contact Email

http://orcid.org/0009-0001-3001-8258
Rodolphe Gomba

Polytechnic Superior National School (ENSP), Marien Ngouabi University, Brazzaville, Congo

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Nianga-Apila

Polytechnic Superior National School (ENSP), Marien Ngouabi University, Brazzaville, Congo

Contact Email

http://orcid.org/0009-0007-9756-9007
Timothee Nsongo

Faculty of Sciences and Techniques, Marien Ngouabi University, Brazzaville, Congo

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Ursula Vanelie Kani Mboyo

Polytechnic Superior National School (ENSP), Marien Ngouabi University, Brazzaville, Congo

Contact Email

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Plain Text BibTeX RIS

APA Style

Eyandzi, A. O., Gomba, R., Nianga-Apila, Nsongo, T., Mboyo, U. V. K. (2025). Analysis of Dynamic Interactions Between Reactive Compensation and Voltage Stability in THT Networks with SVC. American Journal of Electrical Power and Energy Systems, 14(3), 45-63. https://doi.org/10.11648/j.epes.20251403.11

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ACS Style

Eyandzi, A. O.; Gomba, R.; Nianga-Apila; Nsongo, T.; Mboyo, U. V. K. Analysis of Dynamic Interactions Between Reactive Compensation and Voltage Stability in THT Networks with SVC. Am. J. Electr. Power Energy Syst. 2025, 14(3), 45-63. doi: 10.11648/j.epes.20251403.11

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AMA Style

Eyandzi AO, Gomba R, Nianga-Apila, Nsongo T, Mboyo UVK. Analysis of Dynamic Interactions Between Reactive Compensation and Voltage Stability in THT Networks with SVC. Am J Electr Power Energy Syst. 2025;14(3):45-63. doi: 10.11648/j.epes.20251403.11

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@article{10.11648/j.epes.20251403.11,
  author = {Amos Omboua Eyandzi and Rodolphe Gomba and Nianga-Apila and Timothee Nsongo and Ursula Vanelie Kani Mboyo},
  title = {Analysis of Dynamic Interactions Between Reactive Compensation and Voltage Stability in THT Networks with SVC},
  journal = {American Journal of Electrical Power and Energy Systems},
  volume = {14},
  number = {3},
  pages = {45-63},
  doi = {10.11648/j.epes.20251403.11},
  url = {https://doi.org/10.11648/j.epes.20251403.11},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.epes.20251403.11},
  abstract = {This paper investigates the impact of inte-grating a 35 MW industrial load into an electrical transmission network, with a focus on the role of the Static Var Compensator (SVC) in voltage regulation and system performance enhancement. The added load induces a voltage drop below 0.9 p.u., threatening dynamic stability and potentially triggering unwanted phenomena such as electromechanical oscillations or protective device misoperations. These disturbances are further exacerbated by a decrease in the power factor due to increased phase shift between voltage and current, leading to higher system losses. The SVC demonstrates high effectiveness in mitigating these effects by dynamically injecting reactive power and restoring voltage levels close to nominal values. Its thyristor-controlled operation provides fast and adaptive compensation, outperforming traditional fixed capacitors and reactors in transient response. Using real-world data from the Congolese power grid, this study employs simulation-based scenarios to evaluate the SVC’s performance under local operating conditions. Results confirm that optimised reactive power com-pensation enhances grid reliability and facilitates the integration of heavy industrial loads. Recommendations are proposed for efficient SVC deployment in developing electrical infrastructures.},
 year = {2025}
}

Copy | Download

TY  - JOUR
T1  - Analysis of Dynamic Interactions Between Reactive Compensation and Voltage Stability in THT Networks with SVC
AU  - Amos Omboua Eyandzi
AU  - Rodolphe Gomba
AU  - Nianga-Apila
AU  - Timothee Nsongo
AU  - Ursula Vanelie Kani Mboyo
Y1  - 2025/06/03
PY  - 2025
N1  - https://doi.org/10.11648/j.epes.20251403.11
DO  - 10.11648/j.epes.20251403.11
T2  - American Journal of Electrical Power and Energy Systems
JF  - American Journal of Electrical Power and Energy Systems
JO  - American Journal of Electrical Power and Energy Systems
SP  - 45
EP  - 63
PB  - Science Publishing Group
SN  - 2326-9200
UR  - https://doi.org/10.11648/j.epes.20251403.11
AB  - This paper investigates the impact of inte-grating a 35 MW industrial load into an electrical transmission network, with a focus on the role of the Static Var Compensator (SVC) in voltage regulation and system performance enhancement. The added load induces a voltage drop below 0.9 p.u., threatening dynamic stability and potentially triggering unwanted phenomena such as electromechanical oscillations or protective device misoperations. These disturbances are further exacerbated by a decrease in the power factor due to increased phase shift between voltage and current, leading to higher system losses. The SVC demonstrates high effectiveness in mitigating these effects by dynamically injecting reactive power and restoring voltage levels close to nominal values. Its thyristor-controlled operation provides fast and adaptive compensation, outperforming traditional fixed capacitors and reactors in transient response. Using real-world data from the Congolese power grid, this study employs simulation-based scenarios to evaluate the SVC’s performance under local operating conditions. Results confirm that optimised reactive power com-pensation enhances grid reliability and facilitates the integration of heavy industrial loads. Recommendations are proposed for efficient SVC deployment in developing electrical infrastructures.
VL  - 14
IS  - 3
ER  -

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