JOURNAL OF ELECTRICAL AND SYSTEM CONTROL ENGINEERING
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Analisis Ketidakseimbangan Beban Pada Transformator Distribusi di PT. PLN (Persero) Ulp Bangli
Full text linkThis research basically started from a gradual power outage carried out by PLN. From this power outage, it is very troubling for the community, both industry and household customers. Load imbalances on electric power distribution transformers always occur and these imbalances occur due to unequal use of electrical energy. As a result of the imbalance of the load, current flows in the neutral transformer. The current flowing in the neutral conductor of this transformer causes losses, namely losses due to neutral current in the neutral conductor of the transformer. The losses contained in the transformer are power loss, core loss and copper loss. In analyzing problems using mathematical models include equations of transformer load imbalance, power losses and efficiency. After analysis, it shows that the transformer is in an unbalanced state where if there is a large load imbalance, the neutral current that appears is also large. The efficiency of the transformer will be even greater if the difference between the inlet and outlet power is small. The power loss occurred 1.98533 kW and the efficiency was 97.06%
RANCANG BANGUN SISTEM INFORMASI RAWAT JALAN PUSKESMAS WEEKOMBAK BERBASIS WEB
Full text linkInformation systems are created to make it easier to process and store data so that it will produce precise and accurate information. The Puskesmas Outpatient Information System is a structure that provides information to assist the decision-making process in implementing Puskesmas management in achieving its activity targets. Puskesmas as a health service requires computers as a tool for processing and presenting information. Puskesmas, which provides health services to the community on a daily basis, is a health agency sector that is growing rapidly as the population increases. A website is a system for accessing information on the internet. A website is a system for accessing information on the internet. Weekombak Community Health Center is an agency that operates in the health sector, namely providing patient care and treatment. In carrying out data processing services at the Weekombak Community Health Center, manual recording is still used, that is, all data is recorded in a book or archive. So services at Community Health Centers become ineffective and inefficient because bookkeeping media slows down the patient service process. Therefore, there is a need for a system that can provide solutions to problems that can currently be resolved
Design of Prototype Hybrid Solar and Wind Power Electric Boat
Full text linkDesign of hybrid Solar and Wind Power Electric Boat powered by a 12V DC motor prototype. In the initial stage of the project, technical drawings of the Electric boat were drawn using Sketch Up software. In the technical drawings, the positions of all important components such as solar panels, wind turbines, and batteries on the boat are shown. In the next stage, the design of a battery charging system will follow. ATMega 8535 microcontroller is used as a ‘brain’ to select the higher DC input voltage from either solar or wind energy. After the design of the battery charging system has been completed, the hardware will be installed on a small-scale Electric Boat similarly as in the technical drawing, with previously calculated specifications 1 5Watt 12V photovoltaic and 12V 1.2aH battery. In the final stage, the prototype will be tested to assess the efficiency of the battery charging system using ATMega 8535 microcontroller, with delay reads 1 second and an accuracy of 98% reading. Condition of the battery is also stable enough to provide a load on the motor with an average of 9.8 V. The boat can also move steadily even though the movement Slow speed
Potensi Pembangkit Listrik Tenaga Bayu Secara Ekonomi di Kawasan Wisata Pantai Cermin Menggunakan Software Homer
Full text linkThe Wind Power Plant is an alternative energy source for generating electricity. The development and utilization of wind energy technology is an effort to increase the contribution of renewable energy to the supply of electrical energy, especially in areas that are not covered by the PLN electricity network. Economic analysis is the application of financial analysis to determine the feasibility of a wind power generation system in the Cermin Beach tourist area, Deli Serdang Regency. Simulation results using Homer software were obtained to supply a load with a kWh of 1,144 kWh/day, a wind turbine with a capacity of 10 kW required 3 turbines with an output power of 2001 watts per turbine. The cost of constructing the turbine after the simulation is Rp. 5,400,000,000 where the total production value if using this generator is IDR 45,709 /kWh, whereas if using the PLN tariff it is IDR. 45,789/kWh with a pay back period of 140 years. The wind speed is 2.63m/s. The mass flow rate is 133.46kg/s, the efficiency power is 1600 watts and the system power is 18.9 watts/m2
Implementasi Soft Starting Abb Pstx 570 Motor Tiga Phasa Mesin Hammermill di PT.Central Proteina Prima,Tbk
No full textIn industry, electric motors play an important role as energy for motion in equipment in the production process. During the starting process, it can draw currents up to 5 to 7 times the nominal current when working normally. So that it can have a bad effect on the electric motor and the surrounding electrical equipment. The method that uses the ABB PSTTX 570 Soft Starting is through the method of starting an electric motor using a thyristor circuit. The soft start method is suitable for cars that are quite powerful. The purpose of the soft start method is to obtain a smaller starting current, to reduce the impact of large peak currents during the starting process and to achieve a constant rated speed. In this method, the current in the motor flows slowly during starting until it reaches the rated value within a certain period of time certain. Soft starting measurable display when motor voltage is 34%, moor current is 7.3 A active power is 0.14 kW when motor voltage is 70% motor current is 1782.5 A with active 371.09 kW and when motor voltage is 100% up motor 111.6 A with an active power of 23.65 kW. In terms of size, the advantage of the soft starter is that it is simpler than the inverter starting equipment
Analisis Perancangan Panel Surya Portabel Dengan Autotracking
Full text linkThe world uses all resources to meet daily electrical energy needs so that shortly, we will run out of ore/mineral/petroleum, a source of electrical energy. As a result, renewable energy solutions have reached the current great demand to save natural resources and solve the energy crisis. Solar energy is rapidly gaining notoriety as an essential means of expanding renewable energy resources. Solar panels are devices that cleanly convert sunlight into electricity and offer a practical solution to the problem of generating electricity in remote areas. Therefore, it is significant for those of us in electrical engineering to understand the technology associated with this field. The solar panel system must be maximized to make solar energy more feasible and efficient than fossil energy. An automatic sun position tracking or solar tracker is a viable approach to optimizing the efficiency of a solar panel system. A solar tracker is a system that controls the movement of solar panels so that they are always aligned with the sun's position. The solar tracker uses a dual-axis system to align the solar panels with the sun's position. By using a solar tracker, it is expected that the solar panel system will produce maximum output power
Desain Pembangkit Listrik Tenaga Surya (PLTS) Terapung pada Regulating Pond Aplikasi pada PLTA Renun UPDK Pandan PLN Kitsbu
Full text linkThe less fossil fuel reserves in the world, especially Indonesia and environmental problems in the global sector caused by oil and gas exploration and mining, then alternative energy sources to replace fossil fuels or better known as renewable energy need to be developed. The Renun Hydroelectric Power Plant (PLTA) in North Sumatra has a water reservoir or so-called Regulating Pond with an area of 11.42 ha, the size of the Regulating Pond which is quite large is very appropriate if it is used for a Solar Power Plant (PLTS) because there is no land acquisition , and the Regulating Pond is more stable, there are no rising and falling contours. The solar panels used in floating solar panels on the regulating pound are 20,441 Polycristaline solar panels, 300 Wp power type Blue Sun Solar Energi BSM270-300P-60 (300W), the power generated is 6,123,300 Wp (6,123.3 kWp) or 6, 12 MWp. The batteries in PLTS consist of 275 series and 3.5 parallel and the total battery required is 1,100 JYC Batteries, OPzV3000 type batteries, and 9 inverters of the ABB brand PVI 500 TL CN with a power of 560 kW and a voltage of 360 V. The potential obtained from the PLTS planning in Regulating Pound for North Renun Hydroelectric Power Plant using Helioscope software simulation is 489,659 kWh/month
Deteksi Penyakit pada Tanaman Padi Menggunakan Pengolahan Citra Digital dengan Metode Convolutional Neural Network
Full text linkRice plant is one of the important factors in supporting human life. When it starts to grow, of course, rice plants also often face problems such as pests or diseases that cause plants to die and lead to crop failure. So proper handling is needed to overcome the disease in rice plants. One of the treatments that can be done is by detecting diseases in rice plants, so that farmers can provide appropriate treatment for these problems. The research data will be processed through several stages, then the dataset used in this study consists of three classes of rice plant diseases, namely, bacterial leaf blight, brown spot, leaf smut and one class of healthy/healthy rice plants with a total of 16000 datasets collected from sources www.kaggle.net and previous research. The parameters tested in this study, namely hidden layer and optimizer affect system performance in the form of accuracy, precision, recall, fl-score, and loss values. In this study, the best results were obtained by using four hidden layers and Adam optimizer. Accuracy was 99.66%, precision, recall, fl-score was 99.66%. 100% and a loss of 0.0047 as well as a graph of the accuracy and loss performance in a good fit
Pengaruh Harmonisa Pada Inverter di Pembangkit Tenaga Surya Terhadap Pembebanan
Full text linkThis research was conducted to look at the characteristics of current and voltage harmonics in an electric power system loaded with non-linear loads. The inverter is a non-linear load that is widely used in industry, government agencies and households. In theory, the inverter is a non-linear load that can produce harmonics in the electric power system, where the resulting harmonics will flow to the source and to the load. Therefore, this research is to look at the characteristics of harmonics in the power system produced by a three-phase inverter, where this research was carried out in two scenarios. The first scenario is to see current and voltage harmonics under unloaded inverter conditions and the second scenario is to see current and voltage harmonics under loaded inverter conditions. Both of these scenarios are carried out with a varied source voltage. In this study using a passive filter in the form of a single-tuned filter, the simulation results were carried out on conditions before the filter was installed for a THDv value of 38.94% and after the filter was installed it was 27.43%. The difference in value, before installing the filter and after installing the filter is 11.51%. this still exceeds the 1952 IEEE 512 standard, so more than one filter is needed to reduce harmonic
Rancang Bangun Inverter Pure Sine Wave Full Bridge Menggunakan Arduino Nano Sebagai Pembangkit SPWM
Full text linkIn the current rapid development of electronics, the use of Arduino microcontrollers is quite often used in electronic devices, one of which is an inverter. An inverter is a device that can convert direct electric current (DC) into alternating electric current (AC). To get a pure sine wave on the inverter, you can use a technique to modulate the width of the DC wave signal called SPWM (Sinusoidal Pulse Width Modulation), because of its advantages in producing low harmonic disturbances. This method is carried out by combining two square waves as a carrier signal of 10 KHz and a reference signal of 50 Hz. The reference signal and carrier signal are generated with the Arduino Nano microcontroller, by amplifying the SPWM signal using the IR2110 IC, so that it is able to carry out the switching process on the Full-bridge inverter circuit using the IRF3205 Mosfet component and the inverter voltage is increased by a 7V/220V 10A step-up transformer so that expected to produce an AC voltage of 220 V with a frequency of 50 Hz sine wave