Mujtahida, Bagus Alfaruq (2023) Analisa Koordinasi Proteksi Dan Pengurangan Insiden Energi Arc Flash Menggunakan Metode Zone Selective Interlocking Pada Plant 1B PT Pupuk Sriwidjaja Palembang. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
PT. Pupuk Sriwidjaja merupakan perusahaan produksi di bidang pupuk urea yang berlokasi di Palembang, Sumatera Selatan. PT Pusri memiliki beberapa pabrik diantaranya yaitu pabrik II, III, IV, IB, dan IIB. Pada pabrik Plant 1B ini di suppay menggunakan generator STG-1 sebesar 38 MW dan generator 5006-J sebesar 21,8 MW. Pada pabrik plant 1B digunakan sebagai proses produksi pupuk urea dan ammonia, tentunya dalam menjaga keandalan pabrik supaya tetap sistem kelistrikan tetap stabil dibutuhkan koordinasi proteksi yang baik, sistem proteksi ini digunakan supaya dapat menjaga kontinuitas serta stabilitas aliran daya ke lokasi yang tidak mengalami gangguan. Gangguan yang kemungkinan terjadi salah satunya adalah fenomena arus pendek (short circuits) dan busur api (arc flash). Busur api adalah fenomena pelepasan energi yang disebabkan oleh adanya aliran arus yang mengalir di saluran yang berbeda atau salah satunya dikarenakan adanya faktor jarak dari busur dan arus hubung singkat. Insiden ini dapat menyebabkan kerusakan pada peralatan dan sangat berdampak bagi para pekerja yang berada di daerah tersebut. Nilai besar energi insiden dapat dihitung menggunakan standar IEEE 1584-2002. Upaya dalam menjaga sistem kelistrikan dibutuhkan proteksi overcurrent relay untuk mendeteksi adanya overcurrent pada sistem. Setelah itu, penentuan jarak batas aman berfungsi sebagai penentuan kategori level jarak agar para pekerja dapat memperkirakan bahaya yang akan terjadi. Hasil dari perhitungan insiden energi akan digunakan sebagai penentuan personal propective equipment supaya dapat meminimalisir disaat bekerja pada daerah busur api berdasarkan NFPA 70E. Metode yang akan digunakan untuk mengatasi hal seperti ini salah satunya yaitu menggunakan zone selective interlocking sebagai solusi dalam meminimalisir masalah ini. Metode ini dapat mengurangi insiden energi busur api tanpa mengurangi selektifitas dari koordinasi pengaman supaya kontinuitas daya tetap terjaga dengan cara mempersingkat waktu trip supaya gangguan lebih cepat untuk diamankan. Metode ZSI yang dilakukan pada PT Pupuk Sriwidjaja Palembang Plant 1B ini setelah dilakukan penelitian dapat disimpulkan bahwa besar nilai insiden pada setiap bus jika dilakukan rata-rata yaitu mengalami penurunan kurang lebih diatas 50% dari semula, hal ini dikarenakan nilai fault clearing time (FCT) juga mengalami penurunan dan tentunya nilai jarak batas aman juga yang jaraknya semakin pendek yang menjadikan dalam menentukan kategori personal protective interlocking (PPE) standar NFPA 70E semakin lebih rendah dan tidak terlalu berbahaya.
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PT. Pupuk Sriwidjaja is a production company in the field of urea fertilizer located in Palembang, South Sumatra. PT Pusri has several factories including factories II, III, IV, IB, and IIB. Plant 1B plant is supplied using STG-1 generators of 38 MW and 5006-J generators of 21.8 MW. In plant 1B is used as a production process for urea and ammonia fertilizers, of course, in maintaining the reliability of the plant so that the electrical system remains stable, good protection coordination is needed, this protection system is used order to maintain continuity and stability of power flow to uninterrupted locations. One of the possible disturbances is the phenomenon of short circuits and arc flash. Arc flash is a phenomenon of energy release caused by the flow of current flowing in different channels or one of them due to the distance factor from the arc and short circuit. These incidents can cause damage to equipment and greatly impact workers residing in the area. Large values of incident energy can be calculated using the IEEE 1584-2002 standard. Efforts to maintain the electrical system require overcurrent relay protection to detect overcurrent in the system. After that, the determination of the safe limit distance serves as a determination of the distance level category so that workers can estimate the danger that will occur. The results of the energy incident calculation will be used as a determination of personal propective equipment order to minimize when working in the arc area based on NFPA 70E. Methods that will be used to overcome things like this is to use zone selective interlocking as a solution in minimizing this problem. This method can reduce the incidence of arc energy without reducing the selectivity of safety coordination so that power continuity is maintained by shortening the trip time so that interference is faster to be secured. The ZSI method carried out at PT Pupuk Sriwidjaja Palembang Plant 1B after research can be concluded that the large incidence value on each bus if carried out on average has decreased approximately above 50% from the beginning, this is because the value of fault clearing time (FCT) has also decreased and of course the value of the safe limit distance is also getting shorter which makes in determining the category of personal protective interlocking (PPE) NFPA 70E standard is getting lower and less dangerous.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Alat Pelindung Diri, Busur Api, Jarak Batas Aman, Proteksi, PT Pupuk Sriwidjaja, Zone Selective Interlocking ============================================================ Arc Flash, Flash Protection Boundary, Protection, Personal Protective Equipment, PT Pupuk Sriwidjaja, Zone Selective Interlocking |
| Subjects: | T Technology > T Technology (General) > T56.8 Project Management T Technology > T Technology (General) > T57.62 Simulation T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK2861 Electric relays. Protective relays--Security measures. T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK3030 Electric power distribution systems |
| Divisions: | Faculty of Electrical Technology > Electrical Engineering > 20201-(S1) Undergraduate Thesis |
| Depositing User: | Bagus Alfaruq Mujtahida |
| Date Deposited: | 28 Jul 2023 06:44 |
| Last Modified: | 28 Jul 2023 06:44 |
| URI: | http://repository.its.ac.id/id/eprint/99562 |
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