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All Journal Jurnal Mahasiswa TEUB Jurnal EECCIS Jurnal Surya Masyarakat Cendekia: Jurnal Pendidikan dan Pembelajaran Jurnal Sosiohumaniora Kodepena (JSK) Unri Conference Series: Community Engagement
Tri Nurwati
Jurusan Teknik Elektro Fakultas Teknik Universitas Brawijaya
Religion Humanities Education Engineering Languange, Linguistic, Communication & Media Social Sciences Other

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Peningkatan Kualitas Outcome Program Keahlian Teknik Sepeda Motor dengan Menggunakan Model “Mega-Pro” Nurwati, Tri; Basrowi, Basrowi
Cendekia: Jurnal Pendidikan dan Pembelajaran Vol. 14 No. 1 (2020): April 2020
Publisher : Center of Language and Cultural Studies

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30957/cendekia.v14i1.612

Abstract

The purpose of this study is to: describe the best practice of conducting management model of TSM skill program using Mapping, Exploring, Goal setting, Assessing, PROmoting (MEGA-PRO) concept and prove that management model of TSM skill program using MEGA-PRO concept is able to reduce waiting time students to have income. The method used is qualitative research. The research was conducted at SMK N 8 Purworejo in Central Java. Data were collected by using participatory observation, interviews, and documentation. Data were analyzed by using a four-stage analysis of qualitative data that includes data collection, data reduction, data classification, and conclusion. Based on the results of data analysis can be concluded that: (1) best practice of conducting management model of TSM skill program using MEGA-PRO model is able to improve the knowledge, skill and students’ attitude, and (2) management of TSM program using MEGA-PRO model is able to reduce waiting time students to have income.
IoT di Dapur Milenial, Harapan dan Tantangan Masa Depan Nurwati, Tri
Jurnal Sociohumaniora Kodepena (JSK) Vol. 5 No. 1 (2024): Jurnal Sosiohumaniora Kodepena
Publisher : Kodepena Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54423/jsk.v5i1.159

Abstract

This study aims to examine how IoT is one of the industrial technologies serving human interests that will make human life more efficient. And how future technologies could be disastrous, such as lack of privacy. This progress indicates that it is becoming more modern and its long-term impact needs to be analyzed, so it is hoped that there will be a lot of research in various fields related to IoT challenges in the future. Also, the author hopes to increase women's knowledge about technology that will boom in the future.Internet of Things (IoT) makes people's lives smarter and modern. IoT can be applied in various activities, including activities in the kitchen. The kitchen is one of the places that has many technological advances in this millennial era, so rearranging the kitchen with a touch of technology goes hand in hand with the IoT revolution. This paper discusses IoT applications in the kitchen, especially safeguarding the use of gas stoves and regulating air quality in the kitchen. IoT technology in millennial kitchens can be used to remotely monitor kitchens
SISTEM PENGENDALIAN SUHU PADA GREENHOUSE UNTUK BUDIDAYA TANAMAN PAPRIKA MENGGUNAKAN LOGIKA FUZZY METODE MAMDANI Hayyan, Muhammad Rafif; Nusantoro, Goegoes Dwi; Nurwati, Tri
Jurnal Mahasiswa TEUB Vol. 11 No. 6 (2023)
Publisher : Jurnal Mahasiswa TEUB

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Abstract

The paprika plant (Capsicum annuum L.) is a plant native to South America that requires sub-tropical climate conditions togrow. In Indonesia, paprika grows well in the highlands at an altitude of 1000 - 1,500 m above sea level, requiring an idealtemperature of between 21ºC - 27ºC during the day and 13ºC - 18ºC at night. Extreme temperatures above 38ºC during theday and 32ºC at night can be detrimental to the growth of paprikas. To overcome the problem of temperature control in paprikaplants in Indonesia, the author designed a smart greenhouse with a temperature control system based on fuzzy logic. Fuzzylogic was chosen because of its flexibility in making decisions. This smart greenhouse uses cooling and heating actuators tomaintain the temperature inside. This research involved several stages of testing, including placement testing, actuator testing,and overall system testing. Placement tests showed temperature differences between various sides of the smart greenhouse, soit was necessary to use an actuator to even out the temperature inside. Testing the actuator explained that the cooling actuatorcontained a blower fan which functioned to even out the temperature inside the smart greenhouse and a peltier fan functionedto lower the temperature inside the smart greenhouse. Apart from that, there is a heating actuator in the form of a heater whichfunctions to increase the temperature inside the smart greenhouse. After collecting data from this test, proceed with testing theentire system. In this test, there are two conditions tested: day conditions with a setpoint of 24ºC and night conditions with asetpoint of 15ºC. Day conditions reach a steady state error of 1.26%, while night conditions do not reach a steady state errorbecause the cooling actuator is unable to approach the desired setpoint. The test results show that the system can maintain thetemperature inside the smart greenhouse. In addition, tests were carried out on paprika plants inside and outside the smartgreenhouse. The results showed that paprika plants grown in the smart greenhouse produced better development compared tothose planted outside. This research shows that a temperature control system based on fuzzy logic in a smart greenhouse canincrease the growth of paprika plants. Keywords: Paprika Plants, Fuzzy Logic, Smart Greenhouse, Temperature
ANALISIS NILAI SETTING POINT RELE DIFERENSIAL SEBAGAI PROTEKSI TRANSFORMATOR GT UNIT 1 DI PT PLN NUSANTARA POWER UP PAITON Fatahillah, Muhammad; Dhofir, Moch.; Nurwati, Tri
Jurnal Mahasiswa TEUB Vol. 12 No. 1 (2024)
Publisher : Jurnal Mahasiswa TEUB

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Abstract

Power plants are an important component in a country's electricity system which is responsible for producing large amounts of electrical energy to meet the needs of society, industry and other sectors. There are many types of power plants in Indonesia, one of which is the Steam Power Plant (PLTU). In a PLTU there are electrical components that must be safe when a disturbance occurs. The power transformer is one of the vital electrical components in a PLTU which requires a good protection system so that it can operate optimally. PT PLN Nusantara Power UP Paiton Unit 1 has many power transformers installed, one type of which is the GT Transformer. This transformer works to increase the voltage from 18.25 kV to a voltage of 500 kV. On the GT transformer, there is also one of the protection relays installed, namely the differential relay. However, the existence of the installed differential relay needs to be evaluated, namely not only with mathematical calculations but also with ETAP simulations. In this research, mathematical analysis was carried out by calculating the setting point value and slope range of the differential relay on the GT transformer. After that, a simulation was carried out using ETAP. Based on the results of mathematical analysis and simulation, it shows the consistency of short circuit current values, namely with an average error difference of 1,25% for the primary side and 1.183% for the secondary side. Meanwhile, there are differences in the slope values determined by PLN Nusantara Power and the results of mathematical calculations, namely 9.06% for slope 1 and 18.138% for slope 2 based on mathematical calculations and 20% for slope 1 and 80% for slope 2 based on party settings. PLN Nusantara Power. This difference is caused by consideration of the potential for saturation in the Current Transformer due to excessive loading on the secondary side. This CT saturation condition cannot be detected as a disturbance, so it must be located in the no-trip area. Then, the setting current value based on mathematical calculations and PLN Nusantara Power's settings is also not at 0 A. This is due to consideration of the differential relay sensitivity of 30% which causes the setting current value to be around 0.3 A. Finally, in the curve plot Differential relay characteristics, the average fault point is in the trip area except for 3 phase and secondary side interphase faults which are above the trip area or called instantaneous area. The location of the fault point in this instantaneous area is influenced by the large 3-phase short circuit current value on the GITET side so that it accumulates on the 500 kV bus (secondary side). Keywords— Power Transformer, Differential Relay, Setting Point, ETAP, Characteristic Curve
UPAYA PENGHEMATAN KONSUMSI ENERGI LISTRIK DI PT. KAWASAN INDUSTRI MAKASSAR MELALUI WALK-THROUGH AUDIT METHOD Alfarizy, Muhammad Mahdiy; Wibawa, Unggul; Nurwati, Tri
Jurnal Mahasiswa TEUB Vol. 12 No. 1 (2024)
Publisher : Jurnal Mahasiswa TEUB

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Abstract

Energy security plays an important role in supporting national development. To maintain energy security, energy conservation is carried out by reducing energy use in producing goods or services. To analyze energy use is conduct an energy audit. This research aims to obtain the Energy Use Intensity (EUI), electrical energy utilization patterns, and energy saving opportunities in the Head Office and Waste Water Treatment Plant (WWTP) PT. Kawasan. Industri Makassar (PT. KIMA), using WalkThrough Audit method. The calculation of the EUI refers to the building area and electrical energy consumption in 2022-2023. The electrical energy utilization pattern focuses on the daily load of electrical energy consumption, such as measuring the level of light illuminance (lux), calculating the electric power of lamps, calculating the Energy Efficiency Ratio (EER) for the Air Conditioner (AC), and calculate the appropriate AC capacity for each room. The results of the EUI value calculation show that the criteria are very efficient in the Head Office in 2022-2023 and very efficient in the WWTP office in 2022, which decreases to efficient in 2023. The lux level in 76.47% of the rooms in the Head Office and 70% of the rooms in the WWTP Office is below the SNI 6197:2020 standard. The type of AC installed is energy efficient, but the AC capacity is too big in that 35% of the rooms in the Head Office and 57% of the rooms in the WWTP Office. The results of the IKE analysis show a small influence on energy saving opportunities. Meanwhile, the analysis of electrical energy utilization patterns shows a large influence on providing energy saving opportunities. Keyword : Energy Audit, Energy Use Intensity (EUI), Energy Efficiency Ratio (EER)
ANALISIS UJI KAPASITAS DAN EFISIENSI BATERAI 220 VDC MELALUI PROSES DISCHARGING PADA PLTGU BLOK 2 UP MUARA KARANG Nisa, Rizqa Ulya Fakhrun; Wibawa, Unggul; Nurwati, Tri
Jurnal Mahasiswa TEUB Vol. 12 No. 1 (2024)
Publisher : Jurnal Mahasiswa TEUB

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Abstract

PLTGU Muara Karang merupakan salah satu pembangkit listrik yang bertugas menyuplai wilayah Jakarta dan beberapa objek vital negara. Blackout menjadi salah satu permasalahan besar dalam pembangkitan listrik karena dapat mengganggu aktivitas masyarakat. Blackout yang terjadi karena trip pada peralatan pembangkit. Untuk mencegah blackout, PLTGU mengandalkan dua sistem darurat sebagai suplai ketika terjadi trip. Salah satunya adalah baterai sebagai suplai darurat peralatan DC. Kondisi baterai harus dijaga dengan melakukan pemeliharaan rutin melalui pengukuran tegangan, suhu, dan berat jenis. Kondisi dan keandalan baterai juga dapat ditentukan berdasarkan besar kapasitas dan efisiensinya. Kapasitas dan efisiensi dapat diketahui dengan uji kapasitas melalui proses charge dan discharge. Penelitian ini bertujuan untuk mengetahui kondisi suhu dan tegangan serta menghitung kapasitas dan efisiensi baterai. Metode penelitian ini adalah metode kuantitatif dengan teknik pengambilan data melalui dokumentasi. Data yang digunakan adalah data sekunder suhu dan tegangan baterai GT 2.2 pada saat sebelum, selama, dan sesudah pengosongan. Objek penelitian ini adalah 1 bank baterai (104 sel baterai) jenis lead acid pada GT 2.2 PLTGU Blok 2 UP Muara Karang. Hasil penelitian didapatkan (1) baterai sebelum pengosongan dalam kondisi kurang baik sehingga perlu pengisian kembali, (2) suhu tiaptiap sel baterai selama proses pengosongan terus meningkat tidak beraturan, (3) tegangan tiap-tiap sel baterai selama proses pengosongan mengalami penurunan secara linier, (4) kapasitas dan efisiensi baterai memberikan pola hubungan berbanding lurus. Kata kunci– Baterai Lead Acid, Pengosongan, Uji Kapasitas
ANALISIS INDIKASI KEGAGALAN TRANSFORMATOR DENGAN DATA PENGUJIAN DISSOLVED GAS ANALYSIS DI PT. PLN INDONESIA POWER GRATI PGU Prasetyo, Achmad Ari Dwi; Dhofir, Moch.; Nurwati, Tri
Jurnal Mahasiswa TEUB Vol. 12 No. 1 (2024)
Publisher : Jurnal Mahasiswa TEUB

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Abstract

Problems that usually happen in power transformers are failure phenomena, both thermal failure and electrical failure. One example of this failure is overheating caused by several factors such as overloading, hysteresis losses, eddy currents, etc. Excessive heat will stimulate a reaction which will cause a decrease in the quality of the insulating oil in the transformer oil. Apart from that, there is fault gas in the oil content which causes damage to the transformer. Based on these problems, in this research the condition of the transformer and proper maintenance measures are needed. Therefore, this research is very important as a form of prevention effort so that the transformer does not suffer damage. So it is needed to test and analyze the amount of gas dissolved in transformer oil or what is called DGA (Dissolved Gas Analysis) testing. This research discusses indications of failure in unit transformator (GT) 2.2-2.3 at PT. PLN Indonesia Power Grati PGU with monitoring of fault gas H2, CH4, C2H2, C2H4, C2H6, CO, and CO2. The methods used in DGA testing are the TDCG (Total Dissolved Combustible Gas), Roger's Ratio, and Duval's Triangle methods which refer to standards IEEE C57.104 (2008) and IEC 60599 (2015). Health conditions of transformer units 2.2-2.3 in Indonesia. PLN Indonesia Power Grati PGU indicates a thermal disturbance. In this case, overheating occurs, one of which is caused by a partial discharge in the transformer. However, this is still within the permitted limits for 2.2-2.3 transformer units to operate. However, it is necessary to carry out further monitoring of the increase in the value of each gas fault. The maintenance action that must be taken is replacing the transformer oil if one of the combustible gas, namely H2, CH4, C2H2, C2H4, and C2H6 is in condition status 4 for the TDCG method, in case 5 for the Roger's Ratio method, and in the symbols T3 and DT for the Duval Triangle method. This needs to be done as a form of prevention effort so that the transformer does not breakdown. Keyword: DGA, fault gas, failure phenomena, DGA test method
IDENTIFIKASI PENYEBAB DAN TEKNIK PENURUNAN SUSUT ENERGI LISTRIK MENGGUNAKAN METODE FAILURE MODE END EFFECT ANALYSIS PADA PT PLN (PERSERO) ULP KANGEAN MADURA Gumintang, Adnan; Dhofir, Moch.; Nurwati, Tri
Jurnal Mahasiswa TEUB Vol. 12 No. 1 (2024)
Publisher : Jurnal Mahasiswa TEUB

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Abstract

PT PLN (Persero) is one of the state-owned enterprises responsible for managing electricity in Indonesia. PLN playsa crucial role in providing electricity services to the community through generation, distribution, and sales. At PT PLN(Persero) ULP Kangean, there are 33,737 customers with a connected load of 2,278,050 VA. However, there is adiscrepancy between the amount of energy sold and the amount of energy issued during this period. Two maincomponents, namely technical and non-technical components, are the two factors behind this energy loss. The FailureMode and Effect Analysis (FMEA) method is used in this study to identify the causes of electrical energy loss. Dataanalysis conducted from January to September 2022 shows that the Low Voltage Network (JTR) is the main cause ofelectrical energy loss at PT PLN (Persero) ULP Kangean. There are several failures in the JTR, where damage to theelectrical conductors is one of the contributors to the highest Residual Risk Priority Number (RPN), namely 23.1 or31.37%. This error is a major concern in efforts to repair and control energy loss. This study provides valuable insightsinto the main sources of energy loss at PT PLN (Persero) ULP Kangean, and enables the implementation of more preciseand efficient actions to improve the efficiency of electricity distribution and address failures that can cause energy loss. Keywords — Electrical Energy Shrinkage; PT PLN (Persero) ULP Kangean; FMEA; JTR; distribution cable
ANALISIS KONDISI MINYAK TRANSFORMATOR DENGAN UJI DISSOLVED GAS ANALYSIS (DGA) DAN BREAKDOWN VOLTAGE PADA PT PLN NUSANTARA POWER UP MUARA KARANG Badriyah, Intan Layla; Dhofir, Moch.; Nurwati, Tri
Jurnal Mahasiswa TEUB Vol. 12 No. 1 (2024)
Publisher : Jurnal Mahasiswa TEUB

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Abstract

Transformer oil is one of the important components in a transformer. In transformers, oil functions as an insulating material andalso acts as a coolant. Transformer oil will have loads in the form of electric fields and thermal loads when the transformer isoperating. The load on the oil causes the temperature of the oil to increase, so that the value of the breakdown voltage decreases and the quality of the oil decreases. Apart from that, this load also causes gases to be contained in the oil. The presence of gases in transformer oil indicates that there is an indication of interference which will result in a decrease in the quality of the insulation. A decrease in insulation quality can cause transformer failure. In this research, the tests carried out were the Dissolved Gas Analysis (DGA) test to determine the gas contents and the Breakdown Voltage test for the breakdown voltage value. Tests on transformer oil were carried out at PT PLN Nusantara Power UP Muara Karang. The results of the research show that based on DGA testing, the faulty transformer has indications of thermal disturbances accompanied by electric arc splitting and damage to the paper insulation, while active transformers have indications of thermal disturbances accompanied by damage to the paper insulation. Based on the breakdown voltage test, the faulty transformer and the active transformer are in normal condition because they are below the standard value (40 kV/2.5 mm). Keywords: Transformer oil, insulation quality, gas content, breakdown voltage
ANALISIS PENGARUH SUHU DAN LAMA PEMANASAN MINYAK DEDAK PADI TERHADAP TINGKAT KADAR AIR DAN TEGANGAN TEMBUS Rizal, Mohammad Iqbal Fakhrur; Dhofir, Moch.; Nurwati, Tri
Jurnal Mahasiswa TEUB Vol. 12 No. 2 (2024)
Publisher : Jurnal Mahasiswa TEUB

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Abstract

This journal discusses the effect of heating with various temperature and duration variations on rice bran oil regarding its moisture content and breakdown voltage, aiming to be used as an alternative liquid insulation oil in high-voltage equipment. Oil purification through heating is conducted to reduce the moisture content in rice bran oil with temperature variations of 40°C, 50°C, 60°C, and 70°C, and duration variations of 15 minutes, 30 minutes, 45 minutes, and 60 minutes. Electrical testing (using AC breakdown voltage test circuit with capacitive voltage divider method) and physical testing (moisture content reduction test using oven heating method (gravimetric)) are performed to determine the feasibility of rice bran oil as an alternative liquid insulation oil. The test results showed that the breakdown voltage of pure rice bran oil was 17,39 kV/2,5 mm, which did not meet the SPLN 49 standard of 1982, which is 30 kV/2,5 mm before processing. Heating the rice bran oil successfully increased the breakdown voltage to 56,26 kV/2,5 mm, achieved when the oil was treated with a heating temperature of 70°C and a heating duration of 60 minutes. It was found that heating the rice bran oil could reduce its moisture content from 1130 ppm to 624,92 ppm. Thus, it can be concluded that heating significantly affects the moisture content and breakdown voltage of rice bran oil. In terms of moisture content, rice bran oil does not yet meet the maximum standard allowed by SPLN 49 of 1982, which is 30 ppm. However, in terms of breakdown voltage, rice bran oil after heating meets the SPLN 49 standard of 1982, which is 50 kV/2,5 mm after processing. Keywords: Insulation oil, rice bran oil, moisture content, breakdown voltage.
Co-Authors Abdillah, Moch Naufal Achmad, Baihaqi Akbar, Alif Aulia Alfarizy, Muhammad Mahdiy Amiruddin, M. Fero Astari, Bela Natasya Badriyah, Intan Layla Bambang Siswoyo Bashir Mosaddegh Basrowi Basrowi, Basrowi Bernadine, Muhammad Zaidan E. Wakama, Tamunonengi Fatahillah, Muhammad Firdausi, Aditya Mahardika Ganendra, Risang Ghifari, Ahmad Goegoes Dwi Nusantoro Gradianto, Gasa Gumintang, Adnan Hafidh, Muhammad Yusril Hasanah , Rini Nur Hayyan, Muhammad Rafif Hidayat, n/a Hikam, Aldi Lutfil I Nyoman Wahyu Satiawan Inayati, Dian Megantara, Septian Fajar Moch. Dhofir Mochammad Roviq Mochammad Rusli, Mochammad Muhammad Aziz Muslim Muhammad Kurniawan Nanang Sulistiyanto Nisa, Rizqa Ulya Fakhrun Pramudya, Lembat Aji Prasetyo, Achmad Ari Dwi Prastiawan, Hilmi Arif Pratama, Muhammad Arkan Restu Purba, Yobel Yehezkiel Putri, Intan Anggraeni Maryanda Putu Hadi Setyarini Ramadhan, Muhammad Dicky Ramadhan, Muhammad Indrata Rasyid, Athallah Rini Nur Hasanah Rizal, Mohammad Iqbal Fakhrur Saragih, Jhosua Capricorn Satria, Muchamad Iqbal Sinaga, Andreas Sober Sisca Fajriani Sitompul, Ezra Ananda Soltana Guesmi Tarigan, Faldano Bastian Teguh Utomo Thuhu, Dias Satriyo Unggul Wibawa Waru Djuriatno Widyantoro, Salsa Wijono Wijono Zainul Abidin