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All Journal Setrum : Sistem Kendali-Tenaga-elektronika-telekomunikasi-komputer Power Plant Energi & Kelistrikan Jurnal Ilmiah Sutet TERANG : Jurnal Pengabdian Pada Masyarakat Menerangi Negeri EPSILON: Journal of Electrical Engineering and Information Technology
Nurmiati Pasra
Institut Teknologi PLN
Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Singular Value Decomposition (SVD) Berdasarkan Intensitas Pencahayaannya Untuk Pengenal Wajah Samsurizal Samsurizal; Miftahul Fikri; Nurmiati Pasra
Setrum : Sistem Kendali-Tenaga-elektronika-telekomunikasi-komputer Vol 10, No 1 (2021): Edisi Juni 2021
Publisher : Fakultas Teknik Elektro - Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/setrum.v10i1.10376

Abstract

Singular Value Decomposition (SVD) is a method that can be used for biometric systems, where the biometric system is a system for identification by using physical features or human limbs such as fingerprints, eye retina, face, and others. This writing aims to recognize faces based on the intensity of their lighting using SVD. The use of SVD is done by forming the basis of a matrix (where this matrix is a collection of database faces (db)), then this base is used to transform the inputted image / face / db file and database files, then the results of this transformation the norm is calculated, if the minimum norm (db files and input files) is still within a certain tolerance the input file will be categorized as face / db file / ith person. The simulation results show that SVD can classify an image as a face or not with an accuracy of 94.7231% and a period of 35.2020 seconds for the recognition of 900 image files, a face image is a database or not of 68.4616% within 7.5480 seconds for the recognition of 650 face files, a The face images that are in the database are 90.7692% of the people in the 3,7340 seconds period for the introduction of 325 database files.
Optimalisasi Acid Cleaning Pada Cell Generator Chlorination Plant Dengan Menggunakan Acuan Tegangan Ammar Asof; Nurmiati Pasra; Gilang Yuri Wibowo
JURNAL POWERPLANT Vol 3 No 1 (2015): JURNAL POWER PLANT
Publisher : Sekolah Tinggi Teknik - PLN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33322/powerplant.v3i1.796

Abstract

Sea water contains a lot of marine life. If the growth is not inhibited marine life, it can be attached to the installation path (biofouling). Later, as a result of this biofouling will reduce the efficiency of installations through which sea water tersebu t and will add to the cost of production units. Chemical liquid sodium hypochlorite (NaOCl) produced by chlorination plant breeding serves as a barrier to marine organisms. This fluid is produced in the chlorine generator cell through a process of electrolysis of seawater. In fact, electrolysis of sea water also produce side reactions. Namely the deposition of minerals such as magnesium (Mg) and calcium (Ca). As a result, the cell voltage chlorine generator will increase in the use of the same current. Therefore, it is necessary that the process of cleaning acid cell kembalibersih chlorine generator. Reference implementation of the process of cleaning acid that is based on the operating time and based on the voltage. Commissioning of the data, has been conducted several times a dry acid process based on the operating time of 250 H / ± 10 days. But the acid cleaning process is inefficient and ineffective. Therefore, the new reference is made in the implementation process of cleaning acid, wherein the voltage value menjad iacuannya. Several advantages, including the total cost of implementing the dry acid in cycle 1 (one) month more efficient, improve the efficiency and effectiveness of cleaning acid and time flexibility in the implementation process of cleaning acid.
Analisis Tegangan Untuk Setiap Kapasitas Belt Conveyor C4 PLTU Indramayu 3 X 330 Mw Ammar Asof; Nurmiati Pasra; Ulil Absor
JURNAL POWERPLANT Vol 2 No 2 (2014): JURNAL POWER PLANT
Publisher : Sekolah Tinggi Teknik - PLN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33322/powerplant.v2i2.810

Abstract

Belt conveyor is a device used to transfer coal combustion chamber (furnice) in Steam Power (power plant). In the Indramayu power plant conveyor conditions in the field often occurs over tracking the conveyor belt and the belt results in the termination of coal burning. A voltage that is too large will cause the working of the belt conveyor to be heavy so that it can lead to broken shaft and idler pulley. While the voltage is too small to make the cause of the conveyor belt out of the track resulting in slippage into the pulley. The voltage on the conveyor belt must be known with certainty to prevent failed operations on the conveyor. In this case penlis will analyze the voltage for each operating capacity of belt conveyor C4 using the standard CEMA (Conveyor Equipment Manufacturers Association) 6th Edition, 2002. So with the proper voltage, the operation of conveyor C4 can walk normally.
Analisis Kerusakan Material Screen Wall Tube Superheater PLTU Uboh Banten 3 Lontar Unit 1 Sahlan Sahlan; Nurmiati Pasra; M. Rizki Fariz
JURNAL POWERPLANT Vol 3 No 2 (2015): JURNAL POWER PLANT
Publisher : Sekolah Tinggi Teknik - PLN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33322/powerplant.v3i2.829

Abstract

Material Screen Wall tube superheater PLTU UBOH Banten 3 Papyrus that has received the damage unit 1 material form fatigue that happened in permukaanya so that these plants need to be fired withdrawn for some time. Considering the importance of the role a power plant in the context of fulfilling present, management needs national, of course dismissal plant operations should be avoided because such as this can lead to a loss for both sides producers and consumers. The importance screen wall tube superheater which functions as a partition or curtain from superheater tube, in writing bachelor theses will test material screen wall tube superheater with various testing method of analysis of other chemical composition (spark oes), analysis of violent methods vickers),SHEM and EDS and analysis metalografi where it is hoped that it can be expressed the analysis of the process was badly and the reasons why components that can be destroyed and damaged.
Kajian Gas Removal System Dengan Memanfaatkan Second Ejector Dan Men-Stanby-Kan Liquid Ring Vacuum Pump Pada Sub Unit Darajat, UPJP Kamojang Ammar Asof; Nurmiati Pasra; Taufik Hidayat
JURNAL POWERPLANT Vol 4 No 1 (2016): JURNAL POWER PLANT
Publisher : Sekolah Tinggi Teknik - PLN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33322/powerplant.v4i1.830

Abstract

Gas Removal System at the Center for Geothermal Plant (PLTP) plays an important role as Non Condensable exhaust gas (NCG) in the condenser, to keep the condenser pressure remains low. Therefore steam expanded in the turbine will be condensed by water that is on the condenser.
PENGOPERASIAN WATER TREATMENT PLANT DI PT PJB UNIT PEMBANGKITAN PAITON Nurmiati Pasra; Faisol Hakim
Energi & Kelistrikan Vol 7 No 1 (2015): Energi & Kelistrikan
Publisher : Sekolah Tinggi Teknik PLN

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1515.401 KB) | DOI: 10.33322/energi.v7i1.581

Abstract

Water is the main products and basic necessities in the process of generating electrical energy in a steam power plant. Several processes are needed to produce water with permitted conductivity and PH. Steam Power Plant Paiton 2 x 400 MW has two water treatment plant unit with demineraleralized water products flow 2 x 108 m³/ jam. Filling process of steam power plant is started by charging Hotwell condensor of Condensate Storage Tank (CST). By using condensate pump, water is pumped into the Deaerator, then fill the drum with pump Boiler Feed Pump (BFP). In the drum, separation of water and vapor phase will occur. Pressurized wet steam is heated using steam superheater to produce dry steam and supplied to the turbine by settings via Main Stop Valve. Because the generator and turbine are in the same axis, generator is now able to produce electricity. There will be excess water in the Condensate Storage Tank in charging state due. Manual operation which can waste demineraleralized water which furthermore can cause losses and decrease efficiency in the operation system. With the addition of the level sensor in the Condensate Storage Tank, overflowing water in demineraleralized water filling the tank can be avoided.
ANALISA EFEK KORONA PADA SISTEM DISTRIBUSI TENAGA LISTRIK 20 KV PADA GARDU BETON Nurmiati Pasra; Andi Makulau; Muhammad Oka Abriyanto
Sutet Vol 8 No 2 (2018): JURNAL ILMIAH SUTET
Publisher : Sekolah Tinggi Teknik - PLN

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

Abstract

The main components of the installation in the Concrete substations are transformers and switching / protection equipment, assembled in civil buildings that are designed, built and functioned by the construction of masonry and concrete pairs. This construction is intended to fulfill the best requirements for electricity safety. The equipment for 20kV medium voltage relations of pair distribution substation is cubicle. PLN's voltage on the one-phase distribution is 11.5kV. with more high feeding stress arises the problem of isolation in the equipment inside the cubicle. The problem that often occurs in cubicles is corona, which is a phenomenon that occurs when air around an conductor or conductor is ionized. From this process there is a discharge that can lead to insulation failure in the air. Based on the influence of the partial pressure of the air on the corona, it can be analyzed the indication of whether or not a corona occurs in the cubicle. From the substation data used, it can be calculated the amount of power losses on the cubicle. From the substation data used, it can be calculated the magnitude of the power losses resulting from fatal distrubtion, because it can cause physical damage to the equipment in the cubicle, causing audio noise and power losses. Substation K-245 has RH = 80%, Ev = 3,94 kV and Ploss = 3,88 kW, then substation K-245 has RH = 86%, Ev = 4,37 kV and Ploss 3,45 kW where the substations T-241 and K-245 are Ev <11,56kV, then the cubicles are exposed to the corona. For substation T-407 has RH = 45%, Ev = 18,34kV, because Ev> 11,56kV then the cubicle is not exposed to the corona.
Upaya Meningkatkan Efisiensi PLTU Unit 5 PT. PJB Muara Karang Dengan Metode Audit Energi Kartika Tresya Mauriraya; Rio Afrianda; Nurmiati Pasra
Sutet Vol 9 No 2 (2019): JURNAL ILMIAH SUTET
Publisher : Sekolah Tinggi Teknik - PLN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33322/sutet.v9i2.539

Abstract

Audit Energi adalah tindakan pemeriksaan dan pengujian terhadap energi yang digunakan dalam suatu kegiatan untuk mendapatkan data pemakaian energi, sebagai bahan masukan dan saran berupa tindakan perbaikan dengan tujuan agar dapat dicapainya penggunaan energi secara efisien, dimana semaksimal mungkin output yang sama dapat diperoleh dengan menggunakan energi lebih sedikit, ataupun dengan mengurangi konsumsi dan kegiatan yang menggunakan energi. PLTU unit 5 PT. PJB Muara Karang yang telah beroperasi selama kurang lebih 35 tahun mengalami gap performance yang cukup signifikan terhadap commissioning (new and clean condition) sehingga diperlukan suatu upaya identifikasi untuk mempersempit gap performance tersebut. Kata kunci: PLTU, Commissioning, Audit Energy
PELAKSANAAN MANAJEMEN PEMELIHARAAN GARDU DISTRIBUSI Nurmiati Pasra; Permata Putri Ruswandi
Sutet Vol 6 No 2 (2016): JURNAL ILMIAH SUTET
Publisher : Sekolah Tinggi Teknik - PLN

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (4040.689 KB) | DOI: 10.33322/sutet.v6i2.564

Abstract

The quality of services at the State Electricity Company should be improved by minimizing the interruption of the electrical power supply in the power distribution system of 20 kV. Create a effective process of supplying electrical power, the equipment used must be maintained in order to last long, for example equipment in distribution substations. Thorough maintenance activities carried out when the system is off, it means there are planned outage times. Methods of maintenance, there are Time Based Maintenance (TBM) and Condition Based Maintenance (CBM). Both methods have been adopted. TBM until 2013 and CBM from 2014 until now. At the time the company implemented method of TBM, its SAIDI is 1.34936 hour/customers/ year and its SAIFI is 398.1322 times/customer/year. Meanwhile, when CBM is applied, its SAIDI is 0.33110 hour/customers/year and its SAIFI is 65.5828 times/customer/year. The cost of maintenance with CBM is Rp495.311.340,00, which is cheaper than the TBM with its cost up to Rp1.272.924.480,00. It can be seen that the effective method is the CBM, which only execute maintenance activities on distribution substations when needed, but produce a better reliability index numbers with a more economical cost.
PEMADAMAN JARINGAN DISTRIBUSI 20 kV GARDU INDUK SIMPANG HARU Nurmiati Pasra; Syarif Hidayat; Enry Idil Fitrian
Sutet Vol 5 No 2 (2015): JURNAL ILMIAH SUTET
Publisher : Sekolah Tinggi Teknik - PLN

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (264.412 KB) | DOI: 10.33322/sutet.v5i2.595

Abstract

PT. PLN (Persero) is a company engaged in the field of electricity supply. PLN is required to distribute electrical energy reliably and in accordance with the level of quality of service that has been determined. Therefore, it is necessary to evaluate the extent outage with SAIDI (System Average Interruption Duration Index) and SAIFI (System Average Interruption Frequency Index). With SAIDI can be taken remedial measures subsystems, both components or equipment. whereas with SAIFI can be taken remedial measures to overcome burnout procedure and speed up the repair time. In this thesis will be discussed, the calcution of the level of reliability (SAIDI,SAIFI) and the power loss is not channeled by interference outages in PT PLN (Persero) Region substation feeder Simpang Haru Polamas 2015.
Co-Authors Afrianda, Rio Alex Fernandes Ammar Asof Ammar Asof Andi Makulau Arief Suardi Nur Chairat Dahliya Dahliya Denny Rusmansyah Enry Idil Fitrian Faisol Hakim Fikri, Miftahul Gilang Yuri Wibowo Hendri Hendri Ibnu Hajar Kartika Tresya Kartika Tresya Mauriraya Kathelya Nindya Ulina M. Rizki Fariz Makkulau, Andi Muh Fajri Muhamamd Hasil Adnan Muhammad Oka Abriyanto Novi Gusti Pahiyanti Permata Putri Ruswandi Prayudi Suparmin Roswati Nurhasanah Sahlan Sahlan Samsurizal Samsurizal Sigit Sukmajati Suhengki Suhengki Syarif Hidayat Taufik Hidayat Ulil Absor