Harmonic Distortion Assessment of Nonlinear Medical Loads in a Hospital Distribution Network Using ETAP Simulation
DOI:
https://doi.org/10.33019/jurnalecotipe.v13i1.4588Keywords:
ETAP Simulation, Harmonic Distortion, Hospital Power System, Nonlinear Loads, Power QualityAbstract
The growing use of power-electronics-based medical equipment has significantly altered the load characteristics of hospital electrical distribution systems. As nonlinear devices increase, harmonic distortion becomes a critical power quality concern that may affect equipment reliability and operational safety. This study investigates harmonic behavior in a 20 kV/0.4 kV hospital distribution network through harmonic load flow simulation using ETAP software. Total Harmonic Distortion of Voltage (THDv) and Total Harmonic Distortion of Current (THDi) are evaluated at selected buses and at the Point of Common Coupling (PCC), with reference to IEEE Std. 519-2014. Simulation results indicate that two low-voltage buses supplying high-capacity medical equipment exhibit THDv values of 8.21% and 6.74%, exceeding the recommended 5% limit. The THDi at the PCC reaches 14.37%, surpassing the allowable limit for the calculated short-circuit ratio (Isc/IL = 8.43). Dominant harmonic components are identified at the 5th and 7th orders, confirming the influence of rectifier-based medical systems and UPS units. The findings demonstrate that nonlinear medical loads significantly contribute to harmonic propagation, increased branch losses, and voltage distortion. Appropriate mitigation strategies, including harmonic filtering and load configuration adjustments, are therefore essential to ensure compliance with power quality standards and to maintain reliable hospital operation.
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References
[1] Ł. Michalec and M. Jasi, “Impact of Harmonic Currents of Nonlinear Loads on Power Quality of a Low Voltage Network – Review and Case Study,” 2021, doi: 10.3390/en14123665.
[2] P. Harahap, dkk. “Performance of Grid-Connected Rooftop Solar PV System for Households during Covid-19 Pandemic,” J. Electr. Technol. UMY, vol. 5, no. 1, pp. 26–31, 2021, doi: 10.18196/jet.v5i1.12089.
[3] “Core Medical Equipment Core medical equipment - Information”, [Online]. Available: https://www.who.int/publications/i/item/WHO-HSS-EHT-DIM-11.03
[4] A. Information, “Power Quality,” pp. 1–8, 2007, [Online]. Available: https://link.springer.com/book/10.1007/978-1-84628-772-5
[5] E. Sumarno and E. Sumarno, “Analisis Distorsi Harmonisa Kualitas Daya Listrik Tiga Fasa Panel Distribusi Menggunakan Power Quality Analyzer di Rumah Sakit X,” vol. 3, no. 2, pp. 147–155, 2025, doi: https://doi.org/10.32493/yepei.v3i2.53736.
[6] IEEE, “Book IEEE Std 519-2014 (Revision of IEEE Std 519-1992), IEEE Recommended Practice and Requirements for Harmonic Control in Electric Power Systems,” IEEE Std 519-2014 (Revision IEEE Std 519-1992), vol. 2014, pp. 1–29, 2014, [Online]. Available: http://ieeexplore.ieee.org/servlet/opac?punumber=6826457
[7] U. Wiharja, S. P. Santosa, and L. Aditya, “Harmonic Distortion As A Reference For The Quality Of The Electrical Distribution System In The PT . Gojek Tokopedia Logistics,” vol. 13, no. 3, 2023, doi: JITET (Jurnal Informatikadan Teknik Elektro Terapan)Vol. 13No. 3S1, pISSN: 2303-0577 eISSN: 2830-7062.
[8] I. N. Agus et al., “Simulasi Peredaman Distorsi Harmonisa Menggunakan Filter Aktif Dan Analisis Rugi- Rugi Daya Pada Sistem Kelistrikan Di Hotel The Bene Kuta,” vol. 4, no. 2, pp. 113–121, 2017, doi: https://doi.org/10.24843/SPEKTRUM.2017.v04.i02.p15.
[9] P. Harahap, M. I. Hamid, and A. Hazmi, “A New 12-Phase Toroidal Transformer Design to Improve Efficiency and Power Quality in Electric Vehicle Fast Charging Systems,” vol. 12, no. 2, pp. 245–253, 2025, doi: 10.33019/jurnalecotipe.v12i2.4568.
[10] A. H. Azis, Cholish, Rimbawati, and N. Evalina, “Comparative analysis between the switch mode power supply (SMPS) using IC Tl494cn transformer based on power supply linear,” IOP Conf. Ser. Mater. Sci. Eng., vol. 674, no. 1, 2019, doi: 10.1088/1757-899X/674/1/012035.
[11] U. Network and H. Analysis, “Unbalanced Network Harmonic Analysis,” pp. 1–8, 2022, [Online]. Available: https://etap.com/product/unbalanced-network-harmonic-analysis?utm_source=chatgpt.com
[12] K. M. Alawasa and A. H. Al-badi, “Institution ’ s Electrical Distribution System,” 2024, doi: https://doi.org/10.3390/en17163998.
[13] J. Arrillaga and N. R. Watson, “Power System Harmonics About this book,” no. September, pp. 3–5, 2003, doi: 10.1002/0470871229.
[14] P. Harahap, M. I. Hamid, and A. Hazmi, “Comprehensive Review of Advanced Multi-Pulse Rectifier Technology and Its Application in Electric Vehicle Fast Charging Systems,” vol. 05, no. 01, 2025.
[15] M. H. J. Bollen and I. Y. Gu, “Signal Processing of Power Quality Disturbances About this book,” no. October 2005, pp. 2–5, 2006, doi: 10.1002/0471931314.
[16] C. This, “Power disturbance classifier using a rule-based method and wavelet packet-based hidden Markov model,” pp. 1–2, doi: 10.1109/61.974212.
[17] C. This, “519-2014 - IEEE Recommended Practice and Requirements for Harmonic Control in Electric Power Systems,” pp. 1–2, 2014, doi: 10.1109/IEEESTD.2014.6826459.
[18] D. Alame, M. Azzouz, and N. Kar, “Assessing and mitigating impacts of electric vehicle harmonic currents on distribution systems,” Energies, vol. 13, no. 12, 2021, doi: 10.3390/en13123257.
[19] F. G. Merconchini, L. V. Seidedos, J. C. Oliva, J. Ricardo, N. Alvarez, and D. Checa-cervantes, “Study of electric power quality indicators by simulating a hybrid generation system,” vol. 14, no. 2, pp. 1044–1054, 2023, doi: 10.11591/ijpeds.v14.i2.pp1044-1054.
[20] A. F. Abidin, N. I. K. Hakimi, and N. I. K. Ali, “Turkish Journal of Electrical Engineering and Computer Sciences Harmonic classification of different lighting technologies using empirical mode decomposition and support vector machines,” vol. 33, no. 3, 2025, doi: 10.55730/1300-0632.4130.
[21] Y. M. Al-sharif, G. M. Sowilam, and T. A. Kawady, “Harmonic Analysis of Large Grid-Connected PV Systems in Distribution Networks : A Saudi Case Study,” vol. 2022, 2022.
[22] Harmonic propagation on an electric distribution system : Field measurements compared with computer simulation,” 1993.
[23] A. Jamal, S. G. Putri, A. Nur, N. Chamim, and R. Syahputra, “Power Quality Evaluation for Electrical Installation of Hospital Building,” vol. 10, no. 12, pp. 380–388, 2019.
[24] J. Arteaga, Y. U. López, and J. A. López, “Decoding Harmonics : Total Harmonic Distortion in Solar Photovoltaic Systems with Integrated Battery Storage,” 2025.
[25] S. F. Mekhamer, “Design Practices in Harmonic Analysis Studies Applied to Industrial Electrical Power Systems,” vol. 3, no. 4, pp. 467–472, 2013.
[26] P. Quality and E. Machines, Power Quality in Power Systems and Electrical Machines.
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