Jurnal Mahasiswa TEUB

ANALISIS SETTING RELAI ARUS LEBIH DAN RELAI GANGGUAN TANAH PADA PENYULANG ABIMANYU 22 kV PADA GARDU INDUK CAWANG

Wisam Abyadha Ibrahim, Teguh Utomo, Mahfudz Shidiq — Mon, 20 Mar 2023 00:00:00 +0000

At the Cawang Substation there are 3 types of transformers and has several feeders, one of which is the Abimanyu feeder.
According to the data that we obtained, the feeder disturbance data in 2020 at the Abimanyu 22 kV feeder experienced 3 trip.
In the Abhimanyu feeder, a good relay setting is needed to protect the electrical equipment contained in the feeder and other
electrical equipment from short circuit fault and overload disturbances. Therefore, a protection system is needed which met
the requirements of sensitivity, reliability, selectivity, and speed is needed to localize the interference. All of these requirements
depend on the accuracy of the protection equipment used in the distribution channel. The types of protection on distribution
lines are overcurrent relays and ground fault relays. Therefore, there is a need for coordination between the supporting
components of the protection system, which consists of an Over Current Relay and a Ground Fault Relay on the Abimanyu
feeder line. This coordination is intended so that when one of the busbars is disturbed or there is no safety guard that secures
the busbar it will result in an imbalance that will detected by the system and can result in the continuity of the power flow being
disrupted. In the discussion of this writing, it aims to calculate the magnitude of the short circuit fault current that may occur
in the feeder distribution of 22 kV, then determine the settings for the overcurrent relay and ground fault relay on the feeder,
then simulate the system using the ETAP program 12.6 based on the results of calculations and data obtained in the field, and
examines the results of ETAP 12.6 calculations and simulations based on the settings of the Over Current Relay and Ground
Fault Relay on the real condition. The results of this paper can be used as a reference in making coordination of over current
relay protection and ground fault relay at PT. PLN (Persero) UIT JBB UPT Cawang.

Keywords — Relay, Over Current Relay, Ground Fault Relay, Short Circuit, Abimanyu Feeder, ETAP 12.6.0.

DAFTAR PUSTAKA
[1] A. Gaffar, A. Agussalim, and D. Arisandi, “Analisis Gangguan Hubung Singkat Pada Jaringan Distribusi 20 Kv Di Gardu Induk Panakkukang,” J. Teknol. Elekterika, vol. 1, no. 2, p. 156, 2022.
[2] PT. PLN (Persero) Penyaluran dan Pusat Pengatur Beban Jawa-Bali, “Pedoman dan Petunjuk Sistem Proteksi Transmisi dan Gardu Induk Jawa Bali,” PT PLN, no. September, p. 513, 2013.
[3] J. Kennedy and R. Eberhart, “Particle Swarm Optimization,” Ind. Electron. Handb. - Five Vol. Set, pp. 1942–1948, 1995.
[4] I. Robandi, Artificial Intellegence “Mengupas Rekayasa Kecerdasan Tiruan.” Yogyakarta: ANDI, 2019.
[5] H. R. Baghaee, M. Mirsalim, G. B. Gharehpetian, and H. A. Talebi, “MOPSO/FDMT-based Pareto-optimal solution for coordination of overcurrent relays in interconnected networks and multi-DER microgrids,” IET Gener. Transm. Distrib., vol. 12, no. 12, pp. 2871–2886, 2018.
[6] Perusahaan Umum Listrik Negara, “SPLN 64 : 1985,” Dep. Pertamb. dan Energi, vol. No.172/DIR, p. 64, 1985.
[7] PT.PLN(Persero), “Buku Pedoman Proteksi dan Kontrol Penghantar,” Prot. dan Kontrol Penghantar, p. 7, 2014.1942–1948, 1995.

ANALISIS PENGARUH SUDUT ELEVASI PANEL SURYA 50 WP TIPE MONOCRISTALLINE SILICON TERHADAP DAYA KELUARAN

Elvando Putra Nugroho, Fakhriy Hario Partiansyah, Gaguk Asmungi — Mon, 13 Mar 2023 00:00:00 +0000

The potential for solar energy in Indonesia is very profitable if it can be utilized properly and correctly. However, in its application as a power plant, solar panels often encounter problems where the output power generated from solar panels is often less than optimal, so that it will affect the supply of power to the load. The purpose of this study was to determine the effect of the
elevation angle of the solar panel on the output power of the 50 WP monocrystalline silicon type solar panel and to determine the installation of solar panels that can produce high output power. The results obtained from this study by adjusting the elevation angle of the solar panel with the HRA (Hour Angle) angle for each hour of solar irradiation can maximize the maximum output power for each hour of irradiation. In addition, another solution for installing solar panels can be done by using the HRA12 angles as an alternative angle for installing solar panels, which in this study obtained an average radiation intensity during solar
irradiation hours of 18.22%.

Index Terms— Elevation Angle, Output Power, Monocristalline Sillicon, Solar Panel.

PENGENDALIAN AIR DAN NUTRISI PADA TANAMAN SELADA HIDROPONIK MENGGUNAKAN KONTROLER PID BERBASIS ARDUINO

Arsyanur Muhammad Erlangga, Fakhriy Hario Partiansyah, Gaguk Asmungi — Mon, 13 Mar 2023 00:00:00 +0000

Hydroponics is a method of cultivating plants without using soil media. Farming with hydroponic media always pays attention to providing nutrient levels that are in accordance with the needs of plants. The purpose of this research is to test a water and nutrient control system using a PID controller with a setpoint of 500 ppm and 14 cm water level. By using a PID controller, the system produces a small steady state error and gets a faster settling time. The PID controller tuning process using the Ziegler-Nichols 1 method obtained parameter values Kp = 8.4, Ki = 0.15, and Kd = 21. From the test results of nutrient control, it was found that the steady state occurred at the 45th second, overshoot 0% and steady state error was 2.53%. From the results of the water level control test, it is obtained that the steady state occurs at the 175th second, the overshoot is 0% and the steady state error is 0.36%.

Index Terms— Hydroponics, PID Controller, Water and Nutrient Control.

RANCANG BANGUN SISTEM KENDALI JARAK JAUH NUTRISI TANAMAN HIDROPONIK BERBASIS INTERNET OF THINGS

Zulfa Fahrunnisa, Eka Maulana, n/a Rahmadwati — Fri, 10 Mar 2023 00:00:00 +0000

Hydroponics is a method of cultivating plants without using soil media. Hydroponics utilizes water/nutrient mineral solutions needed by plants and other materials as a substitute for soil media. Plants need the right amount of nutrients to grow and develop optimally. This research aims to design a tool that can provide the number of nutrients automatically with nutrient levels that can be adjusted remotely with the concept of the Internet of Things. The control system used is Mamdani fuzzy logic with
input offsets for nutrient content and water level in the reservoir, as well as output for the duration of the nutrient and water pumps to reach a setpoint that can be determined via the Blynk IoT platform. The results showed an accuracy of 93.14% for nutrient control and 97.83% for water level control in reaching the setpoint.

Keywords: Fuzzy Logic, Hydroponics, Internet of Things, Nutrition Control System.

PERANCANGAN DAN STUDI KELAYAKAN PEMBANGKIT LISTRIK TENAGA SURYA (PLTS) ROOFTOP PADA HOTEL GRAND DAFAM YOGYAKARTA

Mohammad Fathurrahman Surya Pratama, Moch. Dhofir, Lunde Ardhenta — Fri, 24 Feb 2023 00:00:00 +0000

This research discusses about the design of an on-grid PLTS system on the rooftop of Hotel Grand Dafam Yogyakarta. For designing PLTS design, researchers used a simulation software called HelioScope, based on design, 140 monocrystalline panels placed with optimal azimuth angle of 25,78o and a tilt of 10o , 2 inverter with a capacity 50kW, 1 smart meter, and other support components of PLTS system. From the economic analysis is gained for initial investment required for this PLTS system is Rp965.859.193,64 with operational and maintenance cost on each year is Rp14.487.887,90, and Cost of Energy (COE) is
Rp0.858/kWh. The result for feasibilty analysis of rooftop PLTS for Net Present Value (NPV) is Rp4.305.724.376,35 with Internal Rate of Return 17,46% and BCR rate 5,457, Because these three aspects are positive, it can be concluded that this PLTS system investment is feasible to realized.

Keywords : PLTS Rooftop, On – Grid System, HelioScope, Feasibility Analysis

SISTEM PENGONTROLAN INTENSITAS CAHAYA PADA PERANGKAT SMART GREENHOUSE UNTUK TANAMAN HIAS PURING MENGGUNAKAN FUZZY LOGIC CONTROL DENGAN METODE MAMDANI

Muhammad Akbar Kamal, Muhammad Aziz Muslim, Goegoes Dwi Nusantoro — Tue, 14 Mar 2023 00:00:00 +0000

During the Covid-19 pandemic, the cultivation of ornamental plants became one of the activities that people liked a lot. That's because ornamental plants have a value of beauty and attractiveness, so they are usually used for decoration. However, the ways to care for ornamental plants are very diverse and have varying difficulties. The croton plant (Codiaeum Variegatum) is an ornamental plant that stands out on the leaves, the croton plant grows in 2 tropical climates and really needs sunlight. The benefits of the croton plant apart from being an ornamental plant, can also degrade the pollutants around it. With the aim of optimizing the cultivation of croton plants, a device is needed that is able to properly meet all the needs of croton plants. Testing begins with designing the control system and device design. Then proceed with making a prototype device and testing according to the characteristics of croton plants. Furthermore, data collection and data analysis were carried out using fuzzy logic control with the mamdani method. The fuzzy logic control will adjust the light intensity produced by the LED grow light. The setpoint in the test is 600 lux which is the ideal lighting for croton plants. The test results show that the LDR sensor used has an error of 0.08% with a reading error tolerance of ±2%. The sensor readings on each side of the smart greenhouse device can be said to be the same. The condition of the actuator in the power range of 70%-100% is bright, 50%-60% is dim and 0%-40% is off. The results of LED grow light lighting are in accordance with the setpoint. However, the system response can be said to be quite slow to reach the setpoint. The effect of implementing croton ornamental plants on a smart greenhouse device which was carried out for 14 days (2 weeks) resulted in a change in the initial plant height of 21.8 cm to 25.3 cm with a total growth of 3.5 cm and a more striking change in leaf color (redness) and therefore the device can function according to the design that has been made.

Keywords: Light Intensity, Smart Greenhouse, Fuzzy Logic Control, Fuzzy Mamdani

ANALISIS NILAI SETTING RELE DIFERENSIAL SEBAGAI PROTEKSI TRANSFORMATOR ADD ON BLOK 2 DI PT PJB UP MUARA TAWAR MENGGUNAKAN ETAP

Muhammad Fadhli Dzil Ikram, Moch. Dhofir, Teguh Utomo — Mon, 13 Mar 2023 00:00:00 +0000

This research discusses about the analysis of differential relay transformer setting as a protection for Add On transformer in PT PJB UP Muara Tawar at block 2 using Etap 19.01 simulation method and mathematical calculation according to IEEE Std 242-2001. Furthermore, to test the results of the setting calculations, a short circuit current calculation that occurs in the area in the protection zone and outside the protection zone is also carried out using the ETAP 19.01 simulation software. Based on the results of mathematical calculations and software simulations, the value of the short circuit current that occurs is 74346 A for 3-phase short-circuit, 58691 A for 2-phase short-circuit, and 67607 A for 1-phase short-circuit to ground in the primary area. And in the secondary area is 1630 A for 3 phase short circuit fault, 1376 A for 2 phase short circuit fault, and 67607 A for 1 phase short circuit
fault to ground. Furthermore, the calculation results for the setting current and the differential are 0.313 A or 0.3 pu, along with a slope 1 value of 45.58% and slope 2 of 91.17%. Based on these results it can be concluded that the differential relay settings on the Add On transformer meet the established standards.

Keywords : Differential Relay Transformer (87T), Etap, setting analysis

ANALISIS PENGARUH KAPASITANSI KAPASITOR TERHADAP TORSI, TEGANGAN, DAN ARUS PADA SISTEM PENGEREMAN REGENERATIF EKSITASI MANDIRI PADA MOTOR INDUKSI 3 FASA

Mon, 13 Mar 2023 00:00:00 +0000

The transportations have important role in facilitating population mobility, one of the transportations are the train. In order to decrease mass, speed up the movement, and decrease carbon emission, electrification has been done, so that electrical train was created. Three-phase induction motor is chosen as a mover because of its sturdiness, lack of brush and commutator, and also shock wave. Three-phase induction motor works using induction principle therefore the excitation can be obtained from stator induction to rotor. One of the most important parameters on the transportations is braking. Regenerative braking becomes an excellent option since it can obtain energy from braking process, it converts kinetic energy to electrical energy, in that case the motor act as a generator. It can occur when the slip is negative. Negative slip can be obtained when the synchronous speed is under the rotor speed. The testing to analyze capacitors capacitance for motor excitation is needed before applying to the real condition. The test has been done in two steps, there are noload test and loaded test using dc to dc converter and battery. The result from Simulink MATLAB 2022a simulation shows that the bigger capacitors capacitance, the lower regeneration frequency produced, so that the synchronous speed will be lower, then negative slip will be bigger that can inflict bigger braking torque
and bigger regeneration voltage.

Keywords–– Capacitor Capacitance, Rotor Rotating Speed, Regeneration Voltage, Regenerative Braking, Synchronous Speed, Three-Phase Induction Motor, Torque

RANCANG BANGUN SISTEM FILTRASI OTOMATIS SERTA MONITORING PH DAN SUHU AIR BERBASIS IOT UNTUK AKUARIUM IKAN CUPANG

Bono Badar Nugraha, Ponco Siwindarto, n/a Nurussa’adah — Thu, 09 Mar 2023 00:00:00 +0000

Betta fish is one of the ornamental fish that is quite easy to maintain and is one type of ornamental fish that has high economic value and widely sold in the market. To maintain the quality of water in the betta fish aquarium is done by manually changing the water every few days. The life of ornamental fish in an aquarium is strongly influenced by how the water quality in the aquarium.
Water quality can be defined by the value of several aspects such as acidity(pH) and temperature. The use of microcontrollers to perform automation and IoT that can be used to exchange information directly by relying on the use of the internet is a solution to the problem of fish owners. Therefore, this research designs an automatic filtration system as well as IoT-based pH and temperature monitoring for a betta fish aquarium using an Arduino Uno microcontroller, pH sensor, temperature sensor, water level sensor, water pump and NodeMCU. Tests are performed on each sensor and device required as well as testing the automation of the entire system. Based on the test results, the pH sensor has a range of differences in reading values against a pH meter of 0.58% to 1.41%, the DS18B20 temperature sensor has a range of differences in reading values against a digital
thermometer of 0.63% to 1.96% and, the HY-SRF05 water level sensor has a range of differences in reading values against a ruler of 1.38% to 6.10%. In testing the water pump using a relay, it can work according to the input given from the microcontroller. Sensor data transmission on smartphones via the internet with NodeMCU intermediaries shows the similarity of sensor reading
data values with smartphone displays. The test results show that the automatic filtration system and IoT-based pH and temperature monitoring for the betta fish aquarium can work as expected.

Key words: Parrot fish, filtration, pH, temperature, IoT

PENGARUH VARIASI SIRIP ISOLATOR POLYETHYLENE TERHADAP TINGKAT ARUS BOCOR DAN TEGANGAN FLASHOVER PADA KONDISI KERING DAN BASAH

Fransiskus X. H. Keraf, Moch. Dhofir, Lunde Ardhenta — Fri, 24 Feb 2023 00:00:00 +0000

This study describes the effect of variations in the sleeve fins on polyethylene insulators on the level of leakage current and flashover voltage in dry and wet conditions. This research begins with data collection by testing the leakage current and breakdown voltage at the High Voltage Laboratory, Department of Electrical Engineering, Faculty of Engineering, Universitas Brawijaya. The various conditions used in testing the leakage current and flashover voltage include dry conditions and wet conditions with different wetting rates, namely 10 mL/s, 30 mL/s, and 60 mL/s. Tests were carried out using high AC voltage on three types of insulators, namely type A, type B, and type C. The arrangement of the electrodes used was rods. The results obtained in this study are the influence of the variation of the fin arm on the level of leakage current and flashover voltage. Where the insulator that has the lowest level of leakage current is the type B insulator with the size of the upper fin which is longer than the lower fin. This is influenced by the upper fin of the insulator which resembles a hood, which when wet conditions cause the water not to completely hit the lower fin. Where the greater the value of the wetting discharge, the greater the value of the leakage current and the greater the surface resistance and power losses. This type B isolator has the best resistance because it also experiences flashover at the highest test voltage level.

Index terms : Polyethylene Insulator, Leakage Current, Wetting Discharge, Flashover Voltage