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Journal : Journal of Renewable Energy, Electrical, and Computer Engineering

Analysis of Age Transformer Due to Annual Load Growth in 20 kV Distribution Network Roza, Indra; Ananda, Yussa; Siregar, Lisa Adriana; Cahyadi, Catra Indra; Junaidi, Junaidi
Journal of Renewable Energy, Electrical, and Computer Engineering Vol 1, No 1 (2021): March 2021
Publisher : Institute for Research and Community Service, Universitas Malikussaleh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/jreece.v1i1.3685

Abstract

Distribution transformer is a component in distributing electricity from distribution substations to consumers. Damage to distribution transformers causes continuity of customer service to be disrupted (power cut or blackout occurs). The length of the PLN electricity network requires a transformer to distribute electricity to serve consumers and how to maintain the transformer. The daily load curve of a peak load for housing, shops and factories / industries varies. Load served 200 kVA distribution transformer cannot serve the load on housing, shops and factories / industry. The method used is the replacement of a distribution transformer with a capacity of one stage greater or the replacement of a distribution transformer with a capacity of two levels larger. The distribution transformer carried out by the research is a capacity of 200 kVA replaced by 250 kVA. The ability of a distribution transformer cannot accommodate a load which will increase as an area is advanced. Observations made by calculating the age of the transformer by assuming the annual load growth (r) = 3% = 0.3. Annual peak load (P) = 1.8 p, u increase in oil temperature at peak load (θo = 96.21 0C; 84.16 0C). The increase in the hottest temperature above the oil cover, the increase in the temperature of the hottest place above the oil (θg = 20 0C; 20 0C). The ratio of the load loss to the nominal load excitation loss (Q = 3; 30). By assuming the values of these methods it can be estimated that the life of a distribution transformer is 20 kV, a capacity of 200 kVA is 18 years.
Transient Analysis on Switching Capacitor Bank Using Power Factor Regulator Warizmi, Alka; Roza, Indra; Yanie, Ahmad
Journal of Renewable Energy, Electrical, and Computer Engineering Vol. 5 No. 1 (2025): March 2025
Publisher : Institute for Research and Community Service (LPPM), Universitas Malikussaleh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/jreece.v5i1.18707

Abstract

This study discusses the analysis of transients that occur in capacitor bank switching using a power factor regulator (PFR). Electric power systems use capacitor banks to offset reactive power, enhance power factors, and minimize energy losses. However, the switching process in capacitor banks can cause significant voltage and current spikes, known as transient phenomena, which can damage equipment and disrupt system stability. This study conducts simulations and analyzes the impact of transients that occur during the capacitor bank switching process on the electric power system. The simulation is carried out using software that models the behavior of the electric power system, focusing on how the power factor regulator regulates the switching process and its impact on the resulting transients. The simulation results show that the use of PFR can reduce the negative impact of transients, but improper settings can still cause disturbances that have the potential to damage the system. These findings provide important insights for system engineers in designing and operating more reliable power systems, considering the importance of proper settings on the power factor regulator to minimize the effects of transients on capacitor bank switching. This study also recommends several mitigation strategies to reduce the impact of transients and improve overall system stability.
Co-Authors Adriana Siregar, Lisa Agus Almi Agus Almi Agus Almi Agus Almi Nasution Agus Almi Nasution Agus Almi Nasution Agus Almi Nasution Agus Almi Nst Ahmad Yanie Ahmad Yanie Ahmad Yanie Ahmad Yanie Ahmad Yanie Almi Nst, Agus Ananda, Yussa Anas Dary Arinto Ardiansyah Putra, Yogi Arfis A Arfis Amiruddin Budhi Santri Kusuma CA Siregar Catra Indra Cahyadi Dara Safitri Dermawan, Tengku Mhd Aidil Dimas Ramadhan Din Aswan Amran Ritonga Din Aswan Ritonga E Eddy E Erwin Eddy Koto Efendi, Yuwanda Elvy Sahnur Nasution Elvy Sahnur Nasution Ervin Panggabean Evalina, Noorly Fadly Ahmad Kurniawan Fadly Ahmad Kurniawan Nst Faisal Akbar Sitompul Faisal Irsan Pasaribu Faisal Irsan Pasaribu Fauzi, Rama Feri Prayogi Dahlan Frastiya, Odi Gea, Benny Siswanto Gunawan, Fikri Heri Setiawan hutasuhut, abdul azis Idris, Fahmi Irsan Pasaribu , Faisal Irwanto, Muhammad JUNAIDI Lisa Adriana Lisa Adriana Siregar Lisa Adriana Siregar Lisa Adriana Siregar Lisa Adriana Srg Lisa Adriana Srg Lisa Adriana, Lisa Lisa Andriana Lisa Andriana M. Zulfin Muhammad Adam, Muhammad Muhammad Hafiz Rizki Muhammad Hidayat Muhammad Paisal Harahap Muhammad Safri Muharman Muharman Muthawali, Dede Ibrahim Nasution, Agus Almi Nasution, Agus Almi Ningsih, Margie Subahagia Nst, Agus Almi Nur Rahman Othman, Mohd. Azlishah Oyi Adi Sutrisno Pratowo Aji Purba, Reza Firmansyah Rida, Rizkha Rizky Wahyuda Roberto, Roberto Sinaga Rzk, M Fathur SAWITRI, DARA Setiawan, Heri Sholeha, Dewi Siahaan, Indra Cahaya T. Sihotang, Chirstian Siregar, Lisa Adriana Tampubolon, Mora Tama Teguh Vikriandi Tarigan Thomson Samuel Sinaga Tumanggor, Daniel Warizmi, Alka Yanie, Ahmad Yanto, Putra Agung Dwi Yoga Tri Nugraha Yussa Ananda Yuwanda Efendi