Studi Pengaturan Sistem Proteksi Undercurrent pada Penyulang Interkoneksi Industri di PLN Sumatera Selatan
Abstract
The interconnection between industrial power systems and the PLN distribution network improves supply reliability but also introduces potential abnormal operating conditions, such as loss of load due to the sudden disconnection of large industrial loads. This condition does not generate fault current and therefore cannot be detected by conventional overcurrent or earth-fault relays. This study discusses the application of an undercurrent relay (ANSI 37) as an additional protection scheme to detect loss of load conditions on an industrial interconnection feeder in the South Sumatra region. The research methodology includes analysis of the existing system conditions, determination of undercurrent relay settings, configuration of a Siemens Reyrolle 7SR10 relay, and testing using the secondary current injection method. The test results show that the undercurrent relay operates reliably when the current falls below the set value and does not misoperate under normal operating conditions. The results of this study are recommended as an effort to improve the reliability of the PLN distribution system and to strengthen electrical safety (K2) and occupational health and safety (K3) aspects.
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References
PT PLN (Persero), “Keandalan listrik meningkat, PLN catat penurunan durasi dan frekuensi gangguan di 2024,” Siaran Pers, Jakarta, 14 Feb. 2025. [Online]. Available: https://web.pln.co.id/media/siaran-pers/2025/02/keandalan-listrik-meningkat-pln-catat-penurunan-durasi-dan-frekuensi-gangguan-di-2024. Accessed on: Jan. 20, 2026.
F. Charbonnier, T. Morstyn, and M. D. McCulloch, “Coordination of resources at the edge of the electricity grid: Systematic review and taxonomy,” Appl. Energy, vol. 318, p. 119188, Jul. 2022, doi: 10.1016/j.apenergy.2022.119188.
R. Bansal, Ed., Handbook of Distributed Generation. Cham: Springer International Publishing, 2017. doi: 10.1007/978-3-319-51343-0.
R. Desfiana, “Penerapan Partial Discharge Dalam Pemantauan Kondisi Dan Deteksi Anomali Pada Penyulang Pompa Ancol Di Gardu Induk Ancol,” J. Profesi Ins. Univ. Lampung, vol. 6, no. 2, Dec. 2025, doi: 10.23960/jpi.v6n2.239.
Naily Shifa Mardiana, Rohmah Yuli Cahyani, Yehezkiel Billy Debytiantana, S. Sujito, and Moh Zainul Falah, “Electrical Protection Systems in Indonesia: Literature Review of Relay on Indonesian Articles Perspectives,” J. Electr. Comput. Exp., vol. 2, no. 1, pp. 32–37, Jun. 2024, doi: 10.59535/jece.v2i1.282.
J. L. Blackburn and T. J. Domin, Protective Relaying: Principles and Applications, 3rd ed. Boca Raton, FL, USA: CRC Press, 2006.
E. Arya, E. Ermawati, M. Machdalena, and J. Hendri, “Analisa Over Current Relay (OCR) dan Ground Fault Relay (GFR) pada Jaringan Distribusi 20 kV,” J. Surya Tek., vol. 11, no. 2, pp. 755–764, Dec. 2024, doi: 10.37859/jst.v11i2.8731.
G. A. Ibrahmusa, J. Joko, T. Wrahatnolo, and A. I. Agung, “Analisis Koordinasi Setting Relay Proteksi Pada Jaringan Distribusi 20 kV di PT. PLN UP3 Kediri Gardu Induk Pare,” J. Tek. ELEKTRO, vol. 12, no. 1, pp. 28–36, Jan. 2023, doi: 10.26740/jte.v12n1.p28-36.
Wayne, M. B. (2018). Dealing with Power System Stability Issues with Low Load and Low Inertia Systems.
IEEE Standard for Electrical Power System Device Function Numbers, Acronyms, and Contact Designations. doi: 10.1109/IEEESTD.2022.9984140.
H. D. Laksono, M. H. Hakim, R. Ikhlas, and R. A. Ramlee, “Design of Protection Relay Coordination Settings and Connecting to PLC Siemens S7-1500 For Load Shadding and HMI Display at PT. Semen Padang,” Andalas J. Electr. Electron. Eng. Technol., vol. 2, no. 2, pp. 35–42, Nov. 2022, doi: 10.25077/ajeeet.v2i2.24.
M. Muhtar, N. A. Amri, A. Nurfadhilah, and M. Ridhwan, “KONFIGURASI SETTING RELAY TEGANGAN NOL (RTN) PADA GARDU INDUK (GI) MASAMBA,” TECHNO-SOCIO Ekon., vol. 17, no. 2, pp. 219–231, Oct. 2024, doi: 10.32897/techno.2024.17.2.3838.
Megger, “Sverker 900 Relay and Substation Test System,” Megger Product Page, 2024. [Online]. Available: https://www.megger.com/en-ca/products/sverker-900-relay-and-substation-test-system. [Accessed: Jan. 24, 2026].
Siemens, Reyrolle 7SR10 Platform Catalogue – Edition 22, Catalogue No. 109.809.561, 2022. [Online]. Available: https://cache.industry.siemens.com/dl/files/561/109809561/att_1345600/v1/Reyrolle_7SR10_Platform_Catalogue_Edition_22.pdf. [Accessed: Jan. 24, 2026].
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