KILAT <p style="text-align: justify;">KILAT is a scientific journal published by Institut Teknologi PLN d/h. Sekolah Tinggi Teknik PLN. KILAT Journal is published twice in one year in April and October and contains the results of research in the fields of Mechanical Engineering, Electrical Engineering, Civil Engineering and Information Engineering, Law and Economics related to studies in the field of Renewable Energy, Electricity, Telecommunications, Control Systems , Electronics, Architecture, Computer Systems, and Information Systems.</p> <p style="text-align: justify;">KILAT is a scientific journal has been&nbsp;<strong>Accredited&nbsp;</strong>by the&nbsp;<strong>National Journal Accreditation</strong>&nbsp;(ARJUNA) managed by the Ministry of Research, Technology, and Higher Education of the Republic of Indonesia with Class Four (<strong>SINTA 4</strong>) from 2018 to 2022 in accordance with the Decree<strong>. No. B/3693/E5/E5.2.1/2019.</strong></p> <p style="margin-bottom: 0in; line-height: 150%;" align="justify"><span style="font-family: Times new roman, serif;"><span style="font-size: medium;">T</span></span><span style="font-family: Times new roman, serif;"><span style="font-size: medium;">he journal registered in the CrossRef with </span></span><strong><span style="font-family: Times new roman, serif;"><span style="font-size: medium;">Digital Object Identifier&nbsp;(DOI)&nbsp;prefix</span></span></strong><span style="font-family: Times new roman, serif;"><span style="font-size: medium;">: <a href="" target="_blank" rel="noopener"><span style="text-decoration: underline;"><strong>10.33322</strong></span></a></span></span></p> <p style="text-align: justify;"><strong>P-ISSN:&nbsp;<a href="" target="_blank" rel="noopener">2089-1245</a>,</strong><strong>&nbsp;&nbsp;</strong><strong>e-ISSN:<a href="" target="_blank" rel="noopener">&nbsp;2655-4925</a></strong></p> Sekolah Tinggi Teknik - PLN en-US KILAT 2089-1245 Kajian Kelayakan Finansial Fotovoltaik Terintegrasi On Grid Dengan Kapasitas 20 kWp <p><em>ABSTRACT</em></p> <p><em>&nbsp;</em></p> <p><em>Entering the 21st century, oil and gas supplies are running low. While the need for energy is increasing, especially in industrialized countries, it will increase to 70% between 2000 and 2030. In 2017, the electricity needs will reach 25.4 trillion kWh. Solar energy that can be generated for the entire Indonesian mainland which has an area of ​​± 2 million km2 with a radiation distribution of 4.8 kWh/m2/day is 5.10 mW, equivalent to 112,000 gWp. Investment costs include the costs of purchasing all required solar power plant components, such as the cost of purchasing solar modules and purchasing an inverter. Obtained the Internal Rate of Return (IRR) is more than the interest rate, which is 27.11% and it can be concluded that the planning of the on-grid solar power plant in the 20 KWP capacity system can be said to be feasible.</em></p> <p><em>&nbsp;</em></p> <p><em>&nbsp;</em></p> <p><em>Keyword: Solar Cell, investment, electrical Energy</em></p> <p><em>&nbsp;</em></p> <p><em>&nbsp;</em></p> <p><em>ABSTRAK</em></p> <p><em>Memasuki abad 21, persediaan minyak dan gas bumi semakin menipis. Sementara kebutuhan akan energi semakin meningkat, utamanya di negara-negara industri akan meningkat sampai 70% antara tahun 2000 sampai dengan 2030. Pada tahun 2017, kebutuhan energi listrik mencapai 25,4 trilyun kWh. Energi surya yang dapat dibangkitkan untuk seluruh daratan Indonesia yang mempunyai luas ±2 juta km2 dengan distribusi penyinaran sebesar 4,8 kWh/m2/hari adalah sebesar 5,10 mW atau setara dengan 112.000 gWp. Biaya investasi mencakup mengenai biaya pembelian semua komponen pembangkit listrik tenaga surya yang dibutuhkan, seperti biaya pembelian modul surya dan pembelian inverter. Diperoleh Internal Rate of Return (IRR)&nbsp;lebih dari tingkat suku bunga, yaitu 27,11% dan dapat disimpulkan bahwa perencanaan PLTS on-grid di system kapasitas 20 KWP ini dapat dikatakan layak.</em></p> <p><em>&nbsp;</em></p> <p>&nbsp;</p> <p><em>Kata kunci: Cel surya, investasi, Energi listrik</em></p> <p><em>&nbsp;</em></p> Muchamad Nur Qosim Rinna Hariyati ##submission.copyrightStatement## 2021-04-13 2021-04-13 10 1 1 9 10.33322/kilat.v10i1.544 Studi Kelayakan Operasi Berdasarkan Uji Dissolve Gas Analysis pada Transformator Distribusi 150 kV Gardu Induk Cibabat Cimahi <p><em>The role of insulation media in high voltage equipment is an important component in maintaining the ongoing distribution of electric power from random interference during operation. Insulation media used in high voltage equipment are air, solid, oil, or gas.</em> <em>All of these media will experience a decrease in performance along with the operating time and service life factor of the equipment. Therefore, the role of maintenance is very important. One method of diagnosis of damage to insulating oil is Dissolve Gas Analysis (DGA). DGA diagnosis is conducted to determine the rate of gas growth in the insulating oil in parts per million (ppm). Some DGA methods are Total Dissolve Combustible Gas (TDCG), Duval’s Triangle, and Roger’s Ratio. A sampling of transformer oil isolation in this study was conducted on three transformer units in the 150 kV / 20 kV Cibabat Cimahi Substation. Oil samples are tested through data processing based on IEEE Std C57.104-2008 standards and SPLN T5.004-5: 2017. DGA test results in the laboratory of PT. PLN (Persero) UPT Bandung shows the results of TDCG transformer unit 1 in condition 2 with the amount of flammable gas at 821 ppm, for transformer unit 2 in condition 1 with the amount of combustible gas 694 ppm and transformer unit 3 in condition 2 with combustible gas 1117 ppm so that each gas growth rate for transformer unit 1 is -1.36 ppm/day, transformer unit 2 is -1.03 ppm/day and transformer unit is 3 0.95 ppm/day.</em></p> Handoko Rusiana Iskandar ##submission.copyrightStatement## 2021-04-13 2021-04-13 10 1 10 21 10.33322/kilat.v10i1.963 Penggunaan 3D Landmark Untuk Pengenalan Masjid Di Kota Bekasi Menggunakan Metode Prototype <p><em>The mosque is the center of Muslim activities. The development of the mosque at this time so fast it can be seen from the City to remote villages. Bekasi City has 12 districts and in each district there are already many mosques that are easy to find. Each mosque must have a different architecture. The difference of each mosque building architecture is what makes Muslims want to visit the mosques to find out the beauty contained in the mosque's architecture. many of them first do a search on the search engine to find the mosque you want to visit Results Unfortunately on the search results there are still many who are drawn in 2D in the form of photographs of the mosque. 2D depiction is considered less effective because it can only see from one angle. Visualization is engineering in making drawings, diagrams, or animations to display information. Visualization usually depicts objects in 3D. With visualization, mosque objects can be shown as a whole. The research conducted is the prototyping method, where this method is used starting in the initial stages of design until the application is ready for use. Through the output of the mosque mosque visualization application in the District of Bekasi City, the author wants to show the overall shape of the mosque, mosque data, and the location of the mosque to make it easier for users before choosing a mosque to visit through a mobile-based application. This application includes mosques from 12 Subdistricts in the City of Bekasi, where in one district is represented by one mosque. The making of this application uses the PHP programming language</em></p> Ndaru Ruseno Satria Satria ##submission.copyrightStatement## 2021-04-13 2021-04-13 10 1 22 31 10.33322/kilat.v10i1.612 Desain dan Implementasi Pembangkit Listrik Tenaga Surya di Balai Benih Ikan, Kabupaten Samosir, Sumatera Utara <p><em>Pemerintah Kabupaten Samosir telah membangun Balai Benih Ikan (BBI) di Kecamatan Harian, untuk meningkatkan produksi perikanan sehingga diharapkan dapat meningkatkan pendapatan dan pertumbuhan ekonom masyarakat, </em><em>BBI diharapkan dapat memasok kebutuhan benih ikan yang sedang dikembangkan di wilayah Kabupaten Samosir, baik di darat maupun di perairan Danau Toba, akan tetapi kegiatan di BBI terkendala akibat tenaga listrik dari jala-jala listrik PLN sering tidak stabil. Untuk menanggulangi permasalaan tersebut maka di BBI dibangun pembangkit listrik tenaga surya (PLTS), sistem PLTS &nbsp;dibangun dengan metode off grid dan dengan utility priority, yaitu PLTS secara otomatis akan menyediakan tenaga listrik di BBI, ketika tenaga listrik dari jala-jala listrik PLN tidak tersedia. Energi listrik yang disediakan oleh PLTS sebesar 50 kWh, kebutuhan energi listrik tersebut dipenuhi dengan menggunakan panel surya sebanyak 40 panel dengan kapasitas masing-masing 250 WP, solar charge controller sebanyak 4 buah dengan daya keluaran maksimum msing-masing sebesar 3500 W, menggunakan baterai sebanyak 48 buah dengan kapasitas masing-masing 100 Ah dan menggunakan inverter dengan daya keluaran maksimum 6800 W.</em></p> Iwan Rohman Setiawan ##submission.copyrightStatement## 2021-04-13 2021-04-13 10 1 32 41 10.33322/kilat.v10i1.944 Analisis Kualitas Daya Listrik Pada Penggunaan Modul Surya Sederhana Untuk Pompa Air Rumah Tangga <p><em>The use of solar modules to meet the needs of everyday life is something interesting to use. Harmonics is a phenomenon of power quality deviation that can distort voltage and current waveforms. In this experiment, a simple inverter with 1000 W capability will be used, then will be loaded with water pumps and other household appliances. The method used is to measure the power factor and harmonics generated by using a measuring device. In this process needs to be assessed and will be seen using the ability of the inverter and the quality of the electric power generated in this solar power generation system.</em><em> Based on the results of measurements and calculations on a water pump with&nbsp; a power of 680 W and 1 incandescent lamp with a power of 60 Watts, the value of the power factor generated is 0.95 while the total harmonic voltage distortion (THDv) value is when the water pump load is THDv 1.9 % and at THDv incandescent lamps 1.6%</em><em>.</em></p> Syarif Hidayat Hidayat ##submission.copyrightStatement## 2021-01-27 2021-01-27 10 1 42 52 10.33322/kilat.v10i1.1037 Pengukuran dan Analisis High Frequency Current Transformer Pendeteksi Partial Discharge <p><em>The life</em><em>time</em><em> of high voltage equipment is very dependent on the condition of insulation, poor insulation means the life span of high voltage equipment is getting shorter. Partial Discharge is one of the causes of deterioration of high voltage equipment insulation. The ability to know the phenomenon of partial discharge in equipment becomes very important and adds value to the maintenance of high voltage equipment. Many explanations regarding partial discharge, partial discharge is the lack of uniformity of the electric field in the isolation or dielectric media which will result in the phenomenon of Partial Discharge where this will lead to the failure of the isolation media. Partial Discharge that occurs continuously can cause damage (breakdown) on a high voltage equipment. Therefore, before a high voltage device is used, Partial Discharge detection is necessary. Partial Discharge Detection can use the Partial Discharge measurement circuit. In testing partial discharges can be tested using a sensor with various circuits including High Frequency Current Transformers (HFCT) so that this research will discuss one part of the Partial Discharge measurement circuit, the HFCT detector. Hopefully, the HFCT detector can be further developed and can be used for better partial discharge detection.</em></p> Andi Junaidi ##submission.copyrightStatement## 2021-04-13 2021-04-13 10 1 53 59 10.33322/kilat.v10i1.983 Rancang Bangun Sistem Penyortir Logam Pada Bahan Baku Furniture Berbasis Mikrokontroler dengan Metode Beat Frequency <p>&nbsp;</p> <p><em>The development of technology is currently experiencing very rapid progress, so that makes the level of mobility and ways of thinking humans are increasing. All human activities have been helped a lot by automatic devices that can be controlled by a control system. Lots of modern tools were created to advance the industry, one of which in the furniture company is to make machines or tools that function to sort out the metal objects in the raw materials to avoid items that are not in accordance with the standard using the Arduino Uno microcontroller with the Beat method Oscillator frequency is a change in the characteristics of the oscillator on the proximity sensor PR 30 when there is a sensor detecting the presence of metal objects. This metal detector works based on the frequency that has been set when there is an object in the form of metal which is located quite close to the proximity sensor.</em></p> M. Reza Hidayat ##submission.copyrightStatement## 2021-04-13 2021-04-13 10 1 60 68 10.33322/kilat.v10i1.991 Pengaruh Intensitas Matahari Terhadap Karakteristik Sel Surya Jenis Polycristaline Menggunakan Regresi Linear <p><em>Renewable energy sources have both renewable and sustainable properties and the utilization of renewable energy sources is a continuously developed alternative. One of the technologies that can utilize renewable energy is polycrystalline solar cells. Solar cells are technology that converts sunlight energy into electrical energy. This technology is very potentially applied in Indonesia that has a tropical climate, but the main problem of this system is the power instability generated. The power produced relies heavily on the intensity of the sun received by the solar panels. The intensity of the solar radiation received by the solar panels can be maximised by installing solar panels, with a precise tilt angle. In research acquired the relationship between irradiation and current correlates of R = 0.7251. From the correlation value above indicates that there is a strong link and is directly proportional between irradiation and the current obtained. The acquired Model needs to be seen its accuracy, in which case it will be used Mean Absolute Percent Error So it is obtained by 26.5%. This indicates that the model is good enough.</em></p> Andi Makkulau Samsurizal Samsurizal Miftahul Fikri christiono Christiono ##submission.copyrightStatement## 2021-04-13 2021-04-13 10 1 69 76 10.33322/kilat.v10i1.994 Rancang Bangun Prototype Sistem Monitoring Pendeteksi Dini Banjir Berbasis Short Message Service Menggunakan PLTS On Grid <p><strong><em>ABSTRACT</em></strong></p> <p><em>The slow handling of the flooding problem for people who live on riverbanks and densely populated areas in urban areas due to the lack of preliminary information obtained by the local community, causing huge losses both morally, materially and even causing fatalities. Based on these problems, a prototype monitoring system for flooding early detection was made with the aim that it can be used as a means of information whose data can be accessed through notifications in the form of short message services (SMS) in real time. In making this research, data collection was carried out in the form of water level data that had occurred at the location of the flood and then made the system design and implementation of that system by conducting trials in the field. This early flood detection system works by monitoring the water level using a level control system. This water level monitoring uses an ultrasonic sensor that is controlled using an arduino uno microcontroller. Data information about the water level is forwarded to the GSM module in the form of a notification message of SMS to the public. For the working of this prototype device in the design, the author uses an electrical power supply from renewable energy in the form of</em><em> On Grid PLTS system. </em><em>The results obtained from this research are for normal status the water level is at&nbsp;</em><em>5-50 cm, for alert status is 55-85 cm and for danger status is 90-100 cm.</em></p> <p><strong><em>Keywords:&nbsp; &nbsp;</em></strong><em>Water Level, Ultrasonic Sensor, Arduino Uno Microcontroller, GSM Module,&nbsp;</em><em>On Grid PLTS System</em></p> <p><strong><em>&nbsp;</em></strong></p> <p><strong><em>ABSTRAK </em></strong></p> <p><em>Lambatnya penanganan masalah banjir bagi masyarakat yang tinggal di daerah bantaran pinggiran sungai maupun kawasan padat penduduk yang berada di perkotaan dikarenakan kurangnya informasi awal yang diperoleh oleh masyarakat setempat sehingga menyebabkan kerugian yang sangat besar baik secara moril, materil bahkan sampai menimbulkan korban jiwa. Berdasarkan permasalahan tersebut maka dibuat suatu prototype sistem monitoring pendeteksi dini banjir dengan tujuan dapat digunakan sebagai sarana informasi yang datanya dapat diakses melalui notifikasi berupa short message service (SMS) secara real time. Dalam membuat penelitian ini dilakukan pengumpulan data berupa data level ketinggian air yang pernah terjadi di lokasi banjir kemudian membuat perancangan sistem serta pengimplementasian dari sistem yang dibuat dengan melakukan uji coba di lapangan. Sistem pendeteksi dini banjir ini bekerja dengan cara memantau level ketinggian air menggunakan sistem level control. Pemantauan level ketinggian air ini menggunakan sensor ultrasonik yang dikontrol menggunakan mikrokontroller arduino uno. Informasi berupa data-data mengenai level ketinggian air ini diteruskan ke modul GSM berupa pesan notifikasi dalam bentuk SMS kepada masyarakat. Untuk bekerjanya perangkat prototype ini dalam rancangannya penulis menggunakan suplai daya listrik dari renewable energy berupa sistem PLTS On Grid. Hasil yang diperoleh dari penelitian ini yaitu bahwa untuk status normal level ketinggian air berada pada angka 5-50 cm, untuk status siaga berada pada angka</em><em>&nbsp; 55-85 cm dan untuk status bahaya berada pada angka 90-100 cm.</em></p> <p><strong><em>Kata kunci:&nbsp; &nbsp;</em></strong><em>Level Ketinggian Air, Sensor Ultrasonik, Mikrokontroler Arduino Uno, Modul GSM,&nbsp;</em><em>Sistem PLTS On Grid</em></p> NOVI KURNIASIH DEWI PURNAMA SARI DENA ANDIKA RIZKA FIRDAUS ##submission.copyrightStatement## 2021-04-13 2021-04-13 10 1 77 88 10.33322/kilat.v10i1.1018 Monitoring Kualitas Air Berbasis Smart System Untuk Ketersediaan Air Bersih Desa Ciaruteun Ilir, Kec. Cibungbulang, Kab. Bogor <p>Desa Ciaruteun&nbsp; Ilir, Kecamatan&nbsp; Cibungbulang,&nbsp; Kabupaten&nbsp; Bogor&nbsp; terletak&nbsp; di&nbsp; sebelah&nbsp; barat Kabupaten Bogor berjarak kurang lebih 6 km ke ibukota kecamatan. Desa ini mengalami kesulitan air bersih yang layak konsumsi padahal wilayah desa ini memiliki sungai yang cukup baik tetapi banyak dipenuhi oleh kotoran sampah. Sekalipun sungai tersebut kotor, masyarakat masih ada yang menggunakannya untuk mandi. Ada juga masyarakat yang membuat sumur, namun kualitas airnya belum terjamin untuk layak dikonsumsi, akibatnya banyak masyarakat yang terkena penyakit perut dan kulit. Sistem monitoring yang dapat memantau kualitas air saat ini telah menjadi kebutuhan yang mendesak bagi penduduk desa. Sistem yang dirancang mengunakan metode kombinasi pembuatan prototipe perangkat teknologi. Pengujian terhadap model kerja dari aplikasi dan perangkat ini melalui proses interaksi yang berulang-ulang antara peneliti dengan penduduk desa. Perangkat teknologi yang dirancang menggunakan perangkat/alat pendeksi yang dikoneksikan dengan aplikasi android atau perangkat komputer sehingga pengguna dapat menggunakannya baik secara realtime maupun mobile melakukan monitoring dan mengambil keputusan terhadap penggunaan air untuk kesehatannya.</p> Hendra Jatnika ##submission.copyrightStatement## 2021-04-13 2021-04-13 10 1 89 100 10.33322/kilat.v10i1.1042 Kajian Kuat Mekanis Alkali-Activated Mortar (AAM) <p><em>Mortar </em><em>salah satu</em><em> material yang </em><em>memiliki manfaat yang beraneka ragam dalam konstruksi bangunan</em><em>.&nbsp; Sejauh ini, mortar konvensional digunakan sebagai bahan plester atau coating pada bangunan. Bahan pengikat utama mortar pada dasarnya masih mengandalkan semen. Pemanfaatan Batu bara pada pembangkit listrik tenaga uap masih menjadi salah satu arus utama sebagai pendukung kebutuhan energi listrik. Penumpukan hasil sisa pembakaran batu bara seperti fly ash dan bottom ash berpotensi mengganggu stabilitas Ekosistem lingkungan. </em><em>Alkali-Activated mortar dengan mengandalkan larutan alkali activator yang direaksikan dengan material pozzolanic seperti fly ash, Ground Granulated Blast Furnace Slag (GGBFS), Palm Oil Fuel Ash (POFA)ldan lain-lain dapat menjadi salah satu solusi dalam mengurangi limbah fly-ash yang menumpuk. Dalam beberapa riset riset terdahulu idealnya kontrol mutu dari Alkali Activated mortar dapat ditinjiau pada kekuatan mekanisnya seperti kuat tekan dan lentur Dalam artikel ini akan ditinjau bagaimana kekuatan mekanis pada beberapa jenis Alkali-Activated Mortar. </em><em>Dari studi</em><em>-studi</em><em> yang </em><em>akan dibahas</em><em> tersebut akan ditarik sebuah kesimpulan berdasarkan data-data pengujian mekanis </em><em>yan </em><em>pada akhirnya dapat memberi rekomendasi tentang bagaimana </em><em>performa mekanis pada Alkali-Activated mortar.</em></p> Muhammad Sofyan ##submission.copyrightStatement## 2021-04-13 2021-04-13 10 1 101 107 10.33322/kilat.v10i1.1114 Pemanfaatan Bioretensi Buatan Sebagai Upaya Pengelolaan Air Hujan Untuk Peningkatan Kualitas Air <p><em>Water treatment priority water resources that are approved for air retention, Increased peak flow and improved water quality with regard to nutrients, pollutants, heavy metals and sediments. Bioretensi system is one alternative in improving air quality from rainwater runoff and reducing peak loads which also reduces runoff volume due to rain water.Management of urban water resources must be adapted to local conditions and sustainable. Bioretensi is a local infiltration media consisting of mixed soil and vegetation to absorb and manage rainwater so that it does not direct to the air body.</em></p> <p><em>The study was approved by the experimental research carried out with further research namely Bucket Bioretensi Design, installation, and testing. Some of the tests conducted on Bucket Bioretensi are rainwater quality testing, studying the level of infiltration by comparing the volume of inflows when opening a biretensi box and the volume of exits after going through a Bucket Bioretency. Bioretensi Bucket is made from used jerry cans with a capacity of 20 liters with dimensions of 27cm x 23cm x 37cm. Material obtained from high density polyethylene HDPE.&nbsp;</em></p> <p><em>After experimenting with Bucket Bioretensi I produced 25% of the volume of air coming out, so 75% of the air received into the Bucket Bioretency system. Water coming out of the Bucket Bioretensi will visit the laboratory to test the air quality.</em></p> Endah Lestari ##submission.copyrightStatement## 2021-04-13 2021-04-13 10 1 108 119 10.33322/kilat.v10i1.1128 Penerapan Metode Adaptive Learning Untuk Pengembangan Pembelajaran Pada Mata Pelajaran Sains SD Berbasis Multimedia <p>Dunia Pendidikan saat ini sudah sangat berkembang pesat, khususnya pada bagian penggunaan teknologi. Salah satunya adalah teknologi E-learning yang menjadi penunjang siswa untuk dapat belajar dengan mandiri tanpa di damping langsung oleh pihak pengajar. Dengan Menjadikan sebuah pembelajaran itu menarik juga dapat penunjang semangat siswa untuk terus belajar. Untuk itu diperlukan sebuah media pembelajaran interactive yang dapat memberikan siswa pengalaman belajar yang lebih menarik dengan didukung metode adaptive learning. Metode adaptive learning adalah metode yang memberikan sebuah pelayanan atau pembelajaran sesuai dengan gaya yang dimiliki oleh seseorang, adapun beberapa gaya belajar yang umumnya dimiliki oleh manusia yaitu : Visual, Auditori, Kinestetik. jadi dengan adanya metode ini kemampuan seseorang akan lebih meningkat karena dapat menyesuaikan dengan gaya apa yang dimilikinya. Peneliti akan mengkhususkan pada mata pelajaran SAINS kelas 1 SD untuk dapat dibuatkan multimedia pembelajaran interactive nya. Jadi nanti hasil dari penelitian ini adalah 3 jenis multimedia pembelajaran sains SD (Visual, Auditori, Kinestetik ) sesuai dengan data yang akan kita dapatkan pada tempat atau studi kasus yang telah ditentukan. Luaran penelitian ini adalah publikasi ilmiah di jurnal nasional tidak terakreditasi, Prosiding dalam pertemuan ilmiah Nasional<em>. </em></p> Eka Putra ##submission.copyrightStatement## 2021-04-13 2021-04-13 10 1 120 127 10.33322/kilat.v10i1.1156 Perbandingan Data Hasil Metode B&W dan GWC untuk Klasifikasi Slagging Abu Batu Bara LRC <p><em>Slagging classification is generally listed in coal COA in coal trading transactions using one of the methods of determining slagging classification so that coal is ensured boiler friendly (low/medium classification). The paper aims to prove the tendency of two methods of determining slagging classification (B&amp;W and GWC) on the results of certain classifications in LRC coal. The research method uses a quantitative method by collecting LRC coal COA data on a coal-fired steam power plant for a year of coal receipt (81 lots) issued by a laboratory that has been accredited by KAN (National Accreditation Committee). According to the method of GWC, ashes of entire lots are classified as &nbsp;LRC ash. While the method of B&amp;W, there are 62 lots of ash classified as lignitic ash and 19 lots of ash classified as bituminous ash. This research has shown that the GWC method shows 79 lots of ash (97.53%) has low and medium classification and 2 lots of ash (2.47%) have a high classification; the method from B&amp;W shows 19 lots of ash (23.46%) has a low classification and 62 lots of ash (76.54%) has a severe classification.</em></p> Denny Murdany Muchsin ##submission.copyrightStatement## 2021-04-13 2021-04-13 10 1 128 137 10.33322/kilat.v10i1.1176 Pengaruh Looseness Terhadap Vibrasi Peralatan Yang Mengalami Unbalance Dan Misalignment <p><em>Looseness occurs in almost all machines and can changes the vibration of the machine. In this paper, experiments were conducted by using two sets of rotor model to observe the effects of looseness on vibration values and patterns on the spectrum of unbalance and misalignment conditions. Rotor model 1 was used to simulate unbalance condition by adding mass to the disk, while rotor model 2 was used to simulate misalignment by changing the position of the bearing housings. Looseness condition was achieved by loosening the bearing housing bolts. The result of vibration observations in unbalance machine showed that looseness changed the overall value and peak values of vibration spectrum. While in machine which has shaft misalignment condition, looseness changed the vibration patterns on the spectrum.</em></p> ANDI KURNIAWAN ##submission.copyrightStatement## 2021-04-13 2021-04-13 10 1 138 145 10.33322/kilat.v10i1.1172 Penerapan Semi-Immersion Virtual Reality Untuk Simulasi Instalasi Transmisi Listrik <p><em>Peningkatan penggunaan listrik setiap tahun selalu terjadi, begitu pula dengan peningkatan pembangunan gardu induk dan gardu distribusi sebagai sarana transmisi listrik PLN. Proses perawatan maupun instalasi gardu induk dan gardu distribusi tersebut tentunya memiliki resiko yang sangat tinggi yang kadang bisa mematikan. Para pekerja yang akan melakukan perawatan maupun instalasi jaringan listrik memerlukan kualifikasi untuk bekerja pada tempat yang berada pada ketinggian. Kualifikasi tersebut membuat</em><em> mahasiswa Teknik Elektro memiliki pelajaran tentang praktikum instalasi jaringan listrik dimana mereka akan mencoba menaiki tiang listrik untuk melakukan instalasi jaringan listrik. Untuk itu diperlukan suatu aplikasi yang dapat menggunakan teknologi virtual reality sehingga pelajar maupun mahasiswa dapat mempelajari proses instalasi jaringan listrik dengan lebih aman, sebelum mereka terjun langsung ke lapangan. </em><em>Aplikasi ini dibuat dengan menggunakan software Unity 2019, yang dapat menghasilkan program berbasis mobile baik itu dalam operasi sistem android. </em><em>Penelitian ini akan menggunakan video 360 yang akan menggambarkan bagaimana proses naik ke atas tiang listrik dan proses instalasi jaringan listrik.</em><em> Penelitian ini bertujuan untuk membangun aplikasi simulasi instalasi jaringan listrik menggunakan teknologi virtual reality, </em><em>agar dapat memberikan gambaran dan simulasi untuk mahasiswa Teknik Elektro agar proses pembelajaran lebih aman dan terkendali</em><em>.</em></p> Muhammad fadli Prathama Andi Dahroni Pritasari Palupiningsih ##submission.copyrightStatement## 2021-04-13 2021-04-13 10 1 146 156 10.33322/kilat.v10i1.1161 Algoritma K-Means dan K-Medoids Analisis Algoritma K-Means dan K-Medoids Untuk Clustering Data Kinerja Karyawan Pada Perusahaan Perumahan Nasional <p>Penilaian kinerja dilakukan untuk mengukur kinerja seorang karyawan terhadap pekerjaan yang dilakukan. Perusahaan Perumahan Nasional melakukan penilaian kinerja terhadap karyawan setiap 6 bulan sekali, yang melibatkan semua karyawan, baik karyawan tetap maupun karyawan kontrak. Tujuan dari penlitian ini adalah untuk melakukan analisis terhadap kinerja algoritma K-Means dan algoritma K-Medoids dalam melakukan proses clustering. Clustering akan dikelompokan menjadi 4 cluster yaitu: tingkat kinerja sangat baik, tingkat kinerja baik, tingkat kinerja cukup dan tingkat kinerja kurang baik. Proses clustering akan dilakukan mengunakan software rapidminer. Pengukuran performa algoritma dalam rapidminer dilakukan mengunakan metode Confusion Matrix dengan parameter accuracy,recall dan precision. Dari penelitian yang dilakukan diperoleh hasil algoritma K-Means mempunyai tingkat accuracy 56%, presision 25% dan recall 60%, sedankan algoritma K-Medoids mempunyai tingkat akurasi 14%, presision 25% dan recall 25%. Dengan hasil tersebut dapat disimpulkan bahwa algoritma K-Means mempunyai performa lebih baik bila dibandingkan dengan algoritma K-Medoids, karena mempunyai tinngkat akurasi dan recell lebih tinggi bila dibandingkan dengan algoritma K-Medoids</p> Akhmad upi fitriyadi ##submission.copyrightStatement## 2021-04-13 2021-04-13 10 1 157 168 10.33322/kilat.v10i1.1174 Analisis Kelayakan Lokasi Promosi Dalam Penerimaan Mahasiswa Baru (PMB) Dengan Algoritma Naïve Bayes & Decission Tree C4.5 <p><em>Competition for new student admissions in every public and private tertiary institution is currently growing rapidly every year, some spend a lot of money on promotional activities, to assist institutions / institutions in obtaining recommendations for the feasibility of promotion locations based on several measurement criteria using the classification algorithms contained in data mining . The algorithm used to compare the measurement of the feasibility of the promotion location of the city and district of Bekasi is Naïve Bayes and Decission Tree C4.5 using four parameters including the number of students in one sub-district, the number of students in one sub-district, the distance of location and last year's enthusiasts using 35 regions / sub-districts in Bekasi city and district.&nbsp; measurement results using the rapidminner, the accuracy value of the Naïve Bayes algorithm is 91.43% and the Decission Tree C4.5 is 94.29%.</em></p> wulan Wulandari ##submission.copyrightStatement## 2021-04-13 2021-04-13 10 1 169 178 10.33322/kilat.v10i1.1196 Penentuan Tingkat Kritikalitas Peralatan Pembangkit Dengan Metode Equipment Criticality Management Dalam Rangka Penentuan Prioritas Pemeliharaan <p>The criticality level of equipment used at PT PLN (Pesero) power plants at present is using the Maintenance Priority Index (MPI) method. The calculation for the criticality rating of MPI equipment uses 4 (four) types of calculations, namely SCR, OCR, ACR and AFPF. To add to the consideration in determining the priority of equipment maintenance, an additional calculation of the criticality level of PLTU Tarahan equipment is carried out using the Equipment Criticality Management method. The Equipment Criticality Management method has 4 (four) assessment perspectives, namely Production, Safety, Environment and Equipment Failure. Calculations that have been carried out on the top 100 (one hundred) equipment in the PLTU Tarahan SERP using the Equipment Criticality Management method, there are 85 (eight five) equipment that has “High” criticality and 15 (fifteen) equipment in the “Medium” criticality category. 15 (fifteen) equipment that has “Medium” criticality is equipment that has backup and part of common generating equipment.</p> SAPUTRA DWI NUGROHO ##submission.copyrightStatement## 2021-04-13 2021-04-13 10 1 179 189 10.33322/kilat.v10i1.1178 Perbandingan Efisiensi Turbin Uap Kondisi Aktual Berbasis Data Komissioning Sesuai Standard ASME PTC 6 <p><em>The performance of steam turbine is very important to know and analyze to understand the actual condition compared to conditions of commissioning. The purpose of this paper is to understand the performance by comparing the efficiency of the steam turbine in actual conditions based on&nbsp; commissioning data in accordance with ASME PTC 6 rules. By doing this, it can be known the actual performance experienced by the steam turbine, the actual condition is what will be compared with the commissioning data so that later will be obtained performance differences that will be a concern in the continuous improvement of the steam turbine. The observations were made at Tarahan Power Plant Unit 3 regarding the condition of steam entering the turbine in this case the pressure and temperature, the condition of the extraction steam, and the condition of the exhaust side that will affect the performance analysis of the steam turbine.</em></p> Agus Noor Sidiq Muhammad Anwar ##submission.copyrightStatement## 2021-04-13 2021-04-13 10 1 190 199 10.33322/kilat.v10i1.1188 Analisis RC Detector Sebagai Sensor Partial Discharge <p>Partial Discharge is a localized electric discharge that only partially connects insulation between conductors, and can appear parallel or not to the conductor. Partial discharge (PD) has long been recognized as an important indication of the state of isolation in high voltage equipment. By measuring PD, a diagnosis of the degree of degradation or deterioration in the isolation conditions of a high voltage device can be determined. Partial Discharge that occurs continuously can cause damage (breakdown) on a high voltage equipment. Therefore, before a high voltage device is used, Partial Discharge detection is necessary. Partial Discharge Detection can use the Partial Discharge measurement circuit. In this study, one part of the Partial Discharge measurement series will be discussed, namely the RC detector. Hopefully, RC detector can be further developed and can be used for more accurate partial discharge detection.</p> Andi Junaidi ##submission.copyrightStatement## 2021-04-13 2021-04-13 10 1 200 207 10.33322/kilat.v10i2.986 Double Exponential Smoothing Berimputasi LOCF Dan Linear Interpolation Dalam Akurasi Peramalan Harga Harian Emas <p><em>Gold is another kind of investment that often experiences price change, mostly every day. Because of its price fluctuation, forecasting is needed to help the investor in investment decision making. But during this Coronavirus Disease 2019 (Covid-19), the gold price is fluctuating extremely than the past 4 years so a better forecasting method approached and analysis technique is needed due to this case. Double Exponential Smoothing method is chosen to forecast this daily gold price. On the other hand, there are so many missing values spreading around the main dataset so the imputation method is needed too, Last Observation Carried Forward (LOCF) and linear interpolation are chosen for imputing the missing values. In this research, the main dataset was split into 3 (three) datasets, which are Precovid-19 (before Covid-19, used </em><em>only </em><em>for visualiz</em><em>ing</em><em> the actual fluctuation condition during this pandemic), Incovid-19 (during Covid-19 based on the date where the first Covid-19 case occurred in Indonesia), and Combination (a binding dataset of Pracovid-19 and Incovid-19). Although </em><em>Incovid-19’s MAPE value is higher than Pracovid-19 and Combination’s MAPE values, in evaluation session showed that Incovid-19’s</em><em> MAPE of</em><em> forecast results </em><em>has the lowest value</em><em> rather than Combination’s</em><em> MAPE of</em><em> forecast results, so the conclusion of this research is Incovid-19 dataset with LOCF imputation is the most adaptive with the actual condition and it is used to forecast the daily gold price until the last period of the main dataset then.</em></p> Riki Ruli A. Siregar Taufik Djatna Sergius Sarmose Manggara Putra Sarmose Manggara Putra Irwansyah Saputra ##submission.copyrightStatement## 2021-04-13 2021-04-13 10 1 208 222 10.33322/kilat.v10i2.1200