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All Journal JTEV (Jurnal Teknik Elektro dan Vokasional Seminar Nasional Teknologi Informasi Komunikasi dan Industri CYCLOTRON
liliana liliana
Universitas Islam Negeri Sultan Syarif Kasim Riau
Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Mathematics Social Sciences

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Reliability Improvement Using Sectionalizer with Section Technique Method liliana liliana; Zulfatri Aini; Hanif Naufal Qasthari
Seminar Nasional Teknologi Informasi Komunikasi dan Industri 2021: SNTIKI 13
Publisher : UIN Sultan Syarif Kasim Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Unreliability in the 20 kV distribution system at PT. PLN (Persero) Rayon Rumbai feeder Rusa is more caused by disturbances that occur. During 2020 this feeder was recorded to experience the highest disturbance of 83 times, causing the system to experience frequent blackouts. This study seeks to identify and improve the reliability of the system in the feeder. The reliability of the system can be calculated and analyzed in more detail with the Section Tehnique method. This method can identify reliability by breaking the system into several sections so that the reliability of each section can be known. The increase in reliability is done by adding a sectionalizer to a system that has low reliability, there are two scenarios that are carried out in placing this sectionalizer correctly to produce better reliability. The results of the calculation of the reliability of each section of the system using the Section Technique method have been obtained, the average value of each reliability index is SAIFI 11.231 (f/customer.yr), SAIDI 30.55 (hr/customer.yr), CAIDI 11.015 (hr/customer interruption). ). The results of this index calculation do not meet the standards of SPLN 68-2 1986 with SAIFI 3.2 (f/customer.yr) and SAIDI 21.9 (hr/customer.yr). The reliability improvement was carried out by implementing sectionilizer on the feeder and the reliability index was obtained with SAIFI values 9.8185 (f/customer.yr), SAIDI 27.5292 (hr/customer.yr) and CAIDI 11.223 (hr/customer interruption) with an increase in SAIFI percentage. by 10.4%, SAIDI 8.8% and CAIDI 0.37%. With the addition of a sectionilizer, it is very helpful in increasing reliability, although it still does not meet the expected standard values.Unreliability in the 20 kV distribution system at PT. PLN (Persero) Rayon Rumbai feeder Rusa is more caused by disturbances that occur. During 2020 this feeder was recorded to experience the highest disturbance of 83 times, causing the system to experience frequent blackouts. This study seeks to identify and improve the reliability of the system in the feeder. The reliability of the system can be calculated and analyzed in more detail with the Section Tehnique method. This method can identify reliability by breaking the system into several sections so that the reliability of each section can be known. The increase in reliability is done by adding a sectionalizer to a system that has low reliability, there are two scenarios that are carried out in placing this sectionalizer correctly to produce better reliability. The results of the calculation of the reliability of each section of the system using the Section Technique method have been obtained, the average value of each reliability index is SAIFI 11.231 (f/customer.yr), SAIDI 30.55 (hr/customer.yr), CAIDI 11.015 (hr/customer interruption). ). The results of this index calculation do not meet the standards of SPLN 68-2 1986 with SAIFI 3.2 (f/customer.yr) and SAIDI 21.9 (hr/customer.yr). The reliability improvement was carried out by implementing sectionilizer on the feeder and the reliability index was obtained with SAIFI values 9.8185 (f/customer.yr), SAIDI 27.5292 (hr/customer.yr) and CAIDI 11.223 (hr/customer interruption) with an increase in SAIFI percentage. by 10.4%, SAIDI 8.8% and CAIDI 0.37%. With the addition of a sectionilizer, it is very helpful in increasing reliability, although it still does not meet the expected standard values.
Analysis of Imbalance Loads and Losses Based on The Largest Loading by 3 Units of 3 Phase Distribution Transformer Zulfatri Aini; Esa Mutari; Liliana Liliana; Oriza Candra
JTEV (Jurnal Teknik Elektro dan Vokasional) Vol 7, No 1 (2021): JTEV (Jurnal Teknik Elektro dan Vokasional)
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (244.709 KB) | DOI: 10.24036/jtev.v7i1.111965

Abstract

The imbalance load of distribution transformers often occurs.This is due to the fact that the load time amongst consumers is not the same, so that there is a difference in the value for each R, S, and T phase. The value difference of the phase causes overload in several phases so as the current emerges in neutral transformers. The current flowing in the neutral transformers causes the losses. In this research, the identification of the overload and the calculation of the distribution transformer load with the IEC reference standard which is allowed for 80% and the calculation of the imbalance transformer load with the 5% standard, then the losses resulting from the presence of neutral currents were carried out. There are three transformers in the Hangtuah feeder that have a load exceeded the standard, namely the DRI 0157, DRI 0241, and DRI 0065 transformers. The calculations for the three transformers are taken from measurement data in the form of voltage and current values for each phase during the daytime and nighttime and are simulated using ETAP 12.6.0 software. The symmetrical component method was used to obtain the imbalance value of the transformer load based on the measurement results and the ETAP simulation. The result of this research is the imbalance load occured in the three transformers. DRI 0241 is the transformer that has the largest percentage of an imbalance load at night. At nighttime, based on the measurement results of the DRI 0241, the transformer load is 80% and 65% at daytime, while for the imbalance load at nighttime and daytime are 32.2% and 29.8%, respectively. The greater the loading of the transformer, the larger the imbalance loading of transformer becomes. The current in neutral transformer generated losses in the amount of 45 A and 2.4% at nighttime while for 33 A and 1.2% at daytime. The neutral current affects the values of losses that the higher it is, the bigger the losses appear in a transformer.
Pengaruh Temperatur dan Nilai Berat Jenis Cairan Elektrolit Terhadap Tegangan Sel Baterai Nickel Cadmium 110 Vdc Gardu Induk Perawang Sistem 150 kV Irvan Nurhadi Nurhadi; Liliana Liliana
CYCLOTRON Vol 5, No 2 (2022): CYCLOTRON
Publisher : Universitas Muhammadiyah Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (726.743 KB) | DOI: 10.30651/cl.v5i2.13501

Abstract

Pada suatu sel baterai mengandung elektrolit yang memiliki temperatur dan berat jenis tertentu dan dapat berubah sewaktu-waktu. Kinerja sel baterai dapat dipengaruhi oleh temperatur cairan elektrolit, yang mempengaruhi nilai berat jenis cairan elektrolit dan kemudian mempengaruhi tegangan keluaran yang dihasilkan sel baterai. Penelitian ini bertujuan untuk mengetahui nilai tegangan sel pada baterai Nickel Cadmium akibat pengaruh dari temperatur dan nilai berat jenis cairan elektrolit baterai di gardu induk Perawang setelah dilakukannya pengujian. Penelitian ini menerapkan metode regresi linier sederhana dengan bantuan software minitab guna mengetahui seberapa besar pengaruh temperatur dan nilai berat jenis cairan elektrolit pada baterai terhadap tegangan tiap sel pada baterai Nickel Cadmium di gardu induk Perawang. Hasil penelitian menunjukkan bahwa tegangan sel baterai yang dihasilkan sebesar 1,400 V hingga 1,483 V ketika temperatur dan nilai berat jenis elektrolit sebesar 27°C dan 1,23 gr/cm3. Sebaliknya, saat tegangan keluaran yang dihasilkan baterai sebesar 1,381 V hingga 1,397 V ketika temperatur dan nilai berat jenis elektrolit sebesar 28°C dan 1,21 gr/cm3. Hasil dari uji koefisien determinasi diperoleh bahwa besar pengaruh temperatur elektrolit terhadap tegangan keluaran sel adalah sebesar 44,22% dan besar pengaruh berat jenis cairan elektrolit terhadap tegangan keluaran sel sebesar 36,72%.
Co-Authors Candra, Oriza Esa Mutari Hanif Naufal Qasthari Irvan Nurhadi Nurhadi Zulfatri Aini