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INDONESIA
Jurnal Mahasiswa TEUB
Published by Universitas Brawijaya
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Core Subject : Education,
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Articles 2,116 Documents
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RANCANG BANGUN ALAT PENDETEKSI GLUKOSA DENGAN METODE NON-INVASIVE BERBASIS MACHINE LEARNING MENGGUNAKAN SENSOR GSR (GALVANIC SKIN RESISTANCE) Afini, M. Dwi Nur; Nurussa’adah, n/a; Purnomowati, Endah Budi
Jurnal Mahasiswa TEUB Vol. 12 No. 1 (2024)
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Abstract

Stroke is a sudden onset of neurological disorders, either focal or global, associated with cerebral circulation disorders. Strokes typically last more than 24 hours and can result in death without a known cause. It is a disease in which blood flow to the brain is obstructed, preventing the supply of oxygen and nutrients and the removal of waste products. This leads to rapid death of brain cells. The success of stroke management is highly dependent on time. Providing prompt first aid yields better clinical outcomes. However, monitoring body conditions is often neglected, and non-invasive tools for measuring blood sugar levels are lacking, which can be traumatic for users. From an economic standpoint, checking blood sugar levels is considered costly. To address these issues, technology is needed to non-invasively and regularly monitor the condition of stroke patients. The technology canprimarily monitor one of the risk factors for stroke, namely blood sugar, using a Galvanic Skin Resistance (GSR) sensor. The sensor classifies the patient's condition and provides education on reducing these risk factors. The tool's function has been tested by comparing the results of laboratory measurements, which showed an accuracy rate of 96.49% for blood sugar levels. During the testing of the monitoring application supported by the ANFIS system, the classification results of the user's condition were obtained with 100% accuracy. The testing was conducted on five patients who had high risk factors for stroke. Keywords: Stroke, Photoplethysmograph, Monitoring Application, ANFIS, Therapy.
ANALISIS KEANDALAN SISTEM JARINGAN DISTRIBUSI 20 KV DENGAN METODE FAILURE MODE EFFECT ANALYSIS DI PT PLN (PERSERO) ULP SUMBERPUCUNG PADA PENYULANG KALIPARE Hakim, Lukmanul; Utomo, Teguh; Wibawa, Unggul
Jurnal Mahasiswa TEUB Vol. 12 No. 1 (2024)
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Abstract

Electrical energy is generated from a plant and will be transmitted and distributed to be channeled to homes and consumed bycustomers. PT. PLN (Persero) or abbreviation of PT. Perusahaan Listrik Negara (Persero) is a state-owned company that movesand controls electricity starting from generation, transmission, and distribution to be distributed to homes and consumed bycustomers. ULP Sumberpucung or abbreviation of Sumberpucung Customer Service Unit is a sub-unit of UP3 Malang that isresponsible for customer service and overcoming electricity distribution problems with a smaller area. The calculation analysis ofthe 20 kV distribution network reliability system is a calculation analysis to find the values of SAIDI, SAIFI, and CAIDI. Thecalculation analysis carried out can use several methods, one of which is the FMEA (Failure Mode Effect Analysis) method. TheFMEA method is used to find the final results of SAIDI, SAIFI, and CAIDI values by identifying components that experienceinterference. The parameters used to determine the reliability index value with the manual calculation of the FMEA method include the failure rate of SPLN equipment, channel length, failure rate of each channel, repair time according to SPLN, repair rate, and the number of customers per distribution substation. The reliability index value can also be performed comparative analysis using ETAP 19.0.1 software. Analysis using ETAP software uses several parameters such as active failure rate, switching time, number of customers per load point, duration of component repair, and cable length. In addition, the results of the SAIDI value can be used to find the value of economic losses received by PLN in the event of a disturbance. The results of the analysis of manual calculations of the FMEA method and analysis on ETAP 19.0.1 software on the Kalipare Feeder at PT. PLN (Persero) ULPSumberpucung shows reliable results because the reliability index value is still below the provisions of SPLN No. 59 of 1985. Keywords: FMEA, ETAP, Interference Identification, Energy Not Supplied, Economic Value
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)
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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)
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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
PENGARUH LAPISAN HIDROFOBIK PADA PERMUKAAN ISOLATOR KERAMIK TIPE POST TERHADAP TINGKAT ARUS BOCOR PADA KONDISI KERING DAN BASAH Wijaya, Rizki Adi; Dhofir, Moch.; Hasanah, Rini Nur
Jurnal Mahasiswa TEUB Vol. 12 No. 1 (2024)
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Abstract

In this research will be explained about the effect of silicon rubber coating on ceramic insulators type post on leak current levels in dry and wet conditions. The research method used is to collect data through testing leakage current and contact angle at the High Voltage Laboratory, Department of Electrical Engineering, Faculty of Engineering, Brawijaya University and simulating the electric field distribution in Ceramic Insulator Type Post with FEMM 4.2 software. The tests were conducted using high voltage AC with variations of voltage tests of 4.8,12,16,20, and 25 kV. The results obtained in this research are that the largest electric field is near the voltage area. Then we get a contact angle of more than 90° or is hydrophobic when coated with silicon rubber, whereas the surface of the insulator which is not coated with silicone rubber has a contact angle of less than 30° or is hydrophilic, and there is an effect of the silicon rubber layer on the leakage current level, namely the greater the wetting discharge value and test voltage, the greater the leakage current value and the greater the surface resistance value. and electrical power losses Keywords: ceramic insulator,post type, contact angle, leakage current, field intensity, hydrophobic
PENGARUH PERBESARAN LUAS ELEKTRODA TERHADAP TEGANGAN TEMBUS PADA DIELEKTRIK UDARA MENGGUNAKAN SUMBER TEGANGAN TINGGI AC Angkasa, Aulia; Dhofir, Moch.; Hasanah, Rini Nur
Jurnal Mahasiswa TEUB Vol. 12 No. 1 (2024)
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Abstract

Breakdown voltage events often occur as a failure of the insulation system in electrical equipment, whether in liquid dielectrics in the form of oil or gas dielectrics in the form of air. An example of a breakdown voltage phenomenon in an electric power system such as a substation is failure (breakdown) between two contacts/conductors of a circuit breaker (CB) or transformer in a substation. The difference in the dimensions of the area of the two contacts/conductors of the circuit breaker influences the distribution of the electric field around the contacts so that it can influence the probability of a breakdown voltage occurring between the two contacts of the circuit breaker which can be likened to two electrodes with different dimensions. In calculatingthe probability of a breakdown voltage occurring, the Gaussian distribution function can be used based on the law of electrode area enlargement (enlargement law). Therefore, this research will describe the effect of increasing the electrode area on the characteristics of the breakdown voltage using an AC (Alternating Current) voltage source. The research method used is by taking data through testing breakdown voltage and leakage current at the High Voltage Laboratory, Department of Electrical Engineering, Faculty of Engineering, Brawijaya University and simulating the distribution of the electric field at each variation of electrode magnification a, 2a, 3a, 4a, and 5a using FEMM 4.2 software. The results obtained in this research are the influence of increasing the electrode area on the characteristics of the breakdown voltage and leakage current. Keywords — Breakdown voltage; Leakage current; Probability; Enlargement law; Electric field
RANCANG BANGUN SISTEM MONITORING DAN OTOMATISASI PADA MODEL ZERO WASTE INTEGRATED FARMING SYSTEM (ZWIFS) BERBASIS INTERNET OF THINGS Putra, Atha Darari; Zainuri, Akhmad; Abidin, Zainul
Jurnal Mahasiswa TEUB Vol. 12 No. 1 (2024)
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Abstract

With the projection of the world population reaching 9.6 billion by 2050, the challenge of increasing foodproductionbecomes crucial. The lack of agricultural production growth can pose a threat of food crisis with wide-rangingimpactsoneconomic and social stability. The Indonesian government has responded by enacting Food Law Draft No. 18 of 2012, withthree main paradigms: Food Sovereignty, Food Self-Sufficiency, and Food Security. However, other challenges arise, suchas workforce regeneration in agriculture and reduction of agricultural land. Zero Waste Integrated FarmingSystem(ZWIFS), which integrates agriculture, fisheries, and livestock farming, offers a solution that can address all of thesechallenges. This system focuses on the harmony between natural resources, human resources, and the environment, withazero waste system approach. In the ZWIFS, elements such as aquaponic vegetable plants, chicken coops, maggotcultivation, and fish ponds interact synergistically. However, the management and maintenance of these various elementsrequire efficient monitoring and automation systems. This research aims to design and develop monitoring andautomationsystems in ZWIFS. This system includes real-time monitoring of air temperature, air humidity, water temperature, waterlevel, water pH, and water TDS. In addition, the automation system includes scheduled feeding, pumpandaeratorregulation, and automatic water sampling. The integration of this technology is expected to create an efficient, sustainable,and waste-free ZWIFS, providing positive impacts both economically and environmentally. Keyword: farming, Internet of Things, zero waste
RANCANG BANGUN ANTENA MIKROSTRIP MEANDER LINE DENGAN MATERIAL FR-4 UNTUK SISTEM GPS TRACKER Basyar, Muhammad Aditiya Choirun; Kurniawan, Dwi Fadila; Purnomo, Muhammad Fauzan Edy
Jurnal Mahasiswa TEUB Vol. 12 No. 2 (2024)
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Abstract

Vehicle monitoring system or tracking system is a system that can be used to assist vehicle owners in monitoring the movement of their vehicles remotely. In the tracking system, the antenna acts as a transmitter of radio waves through the LoRa module. Antenna specifications can affect the transmission of radio frequency signals to the LoRa gateaway. This research designs a meander-line microstrip antenna as the transmitter antenna of the GPS Tracker system. Microstrip antennas have advantagesincluding thin cross-sectional area, easy fabrication, small size and light weight, and can be integrated with existing wireless communication devices. This microstrip antenna design will send data to the LoRa gateaway in the 915 MHz frequency range. There are two meander line antennas tested, namely meander line 9 and meander line 11. The meander line 9 antenna produces return loss measurements of -22.162 dB, VSWR of 1.169, and group delay of -13 ns. Meanwhile, the meander line 11 antennaproduced parameter measurements, namely return loss of -27.167 dB, VSWR of 1.092, and group delay of 194.05 ns. Keywords: Microstrip antenna, Meander line antenna, LoRa frequency, Antenna specifications
DESAIN DAN ANALISIS METODE PLUGIN REPETITIVE CONTROL UNTUK SISTEM LINEAR FASE MINIMUM Edward, Ronald; Rahmadwati, n/a; Muslim, Muhammad Aziz; Kurniawan, Edi
Jurnal Mahasiswa TEUB Vol. 12 No. 2 (2024)
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Control systems have played an important role in the advancement of science and technology. One of the challenges is the use of conventional controllers such as PID (Proportional-Integral-Derivative) controllers which are less than optimal in dealing with complex systems. Therefore, there is a new theory of control called Repetitive Control (RC), RC allows robots to improve movement precision and repetitive task tracking. RC allows the robot to improve the precision of movement and repetitive task tracking. This research uses the Python programming language to design the control system and simulate the variation of the given reference signal and then an analysis is carried out which aims to determine the performance of control method is the most effective. The results of the Plug-in RC control method with three kinds of internal model variations namely modified, odd harmonics, and multi periods are then compared with the PID controller control method. The evaluation parameter values used in this study are time response, %overshoot, root mean square error (RMSE), integral time absolute error (ITAE). As a result, Plug-in RC is more effective in dealing with repetitive signals. For example, at plant J1 (waist) frequencies of 1 Hz and 3 Hz PID produces an ITAE value of 1875.372 and RMSE of 0.21699. Plug-in RC modified internal model produces ITAE value of 3.749 and RMSE of 0.00052. The Plug-in RC odd harmonics internal model produces an ITAE value of 5.753 and an RMSE of 0.00069. While at the frequency of multi periods the performance of the plug-in RC multi periods internal model is better than the PID controller, this can be seen in plant J2 (shoulder) where the Plug-in RC multi periods has an ITAE value of 8.993 and an RMSE of 0.00152, while the PID controller has an ITAE value of 3849.193 and an RMSE of 0.45739. Keywords— Control System, Proportional Integral Derivative (PID), Plug-in Repetitive Control, Intenal Model, Python
ANALISIS PERBAIKAN TEGANGAN DAN RUGI DAYA PADA PENYULANG JETIS PT PLN (PERSERO) UP3 KEDIRI MENGGUNAKAN ETAP 19.0 Allaam, Hisyam Ghozi; Utomo, Teguh; Hasanah, Rini Nur
Jurnal Mahasiswa TEUB Vol. 12 No. 2 (2024)
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Abstract

PLN UP3 Kediri is a company that manages the Jetis Feeder distribution channel which is facing voltage drops and power losses. There are several methods to overcome this incident, such as conductor uprating, substation voltage uprating, and capacitor bank installation. With this improvement, it is hoped that the voltage drop and power loss values will be within the range determined according to SPLN (±5% for voltage drop and -10% for power loss) and ETAP alerts will be ±1% of the nominal limit. This research aims to determine the value of voltage drop and power loss before and after the repair method is carried out and determine the most efficient method. This research shows that under existing loading conditions, the Jetis Feeder is in normal condition. Under full load conditions (100%), the Jetis Feeder has a voltage drop of 4.539% and a power loss of 3.182%. The voltage drop value in this condition is still within the safe condition limit according to SPLN, but has entered the alert condition in ETAP, namely >4%. Under these conditions, repair efforts are needed to overcome voltage drops and power losses. After carrying out repair efforts, the voltage drop and power loss values for the 150 mm2 conductor uprating were 4.445% and 5.158%, the priority conductor uprating was 4.135% and 4.658%, the substation voltage uprating was 1.986% and 4.995%, and the capacitor bank installationwas 2 .5% and 4.558%. Keywords – Voltage Drop, Power Loss, Power Flow, ETAP

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