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All Journal Jurnal Intake : Jurnal Penelitian Ilmu Teknik dan Terapan JEEE-U (Journal of Electrical and Electronic Engineering-UMSIDA) Journal of Advanced Technology and Multidiscipline (JATM)
Herman Nawir
Politeknik Negeri Ujung Pandang
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Rekonfigurasi Jaringan Listrik Penyulang Tawun Rayon Ngawi Dengan Menggunakan Metode Binary Particle Swarm Optimization Muhammad Ruswandi Djalal; Herman Nawir; Sonong
Jurnal Intake : Jurnal Penelitian Ilmu Teknik dan Terapan Vol. 8 No. 1 (2017): April 2017
Publisher : FT- UNDAR

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.48056/jintake.v8i1.22

Abstract

Rekonfigurasi jaringan (Network Reconfiguration) merupakan suatu usaha merubah bentuk konfigurasi jaringan distribusi dengan mengoperasikan pensakelaran terkontrol jarak jauh (switching remotely controlled) pada jaringan distribusi tanpa menimbulkan akibat yang beresiko pada operasi dan bentuk sistem jaringan distribusi secara keseluruhan. Dalam kondisi operasi normal, rekonfigurasi jaringan dilakukan karena dua alasan: mengurangi rugi-rugi daya pada sistem (loss reduction), mendapatkan pembebanan yang seimbang untuk mencegah pembebanan yang berlebih pada jaringan (load balancing). Pada Jarinyan Tegangan menengah Penyulang Tawun Rayon Ngawi terdiri dari 57 bus (GTT) dan 60 saluran. Dari hasil running menunjukkan bahwa sebelum rekonfigurasi memutus switch line 56, 57, 58, 59 dan 60 setelah rekonfigurasi line 26, 27, 42, 47 dan 53. Sebelum rekonfigurasi jaringan mengalami losses sebesar 235.1532 kW setelah rekonfigurasi mengalami losses sebesar 184.1323 kW. Hasil rekonfigurasi dapat mereduksi losses 21.6969 %. Dan tegangan ujung sebelum rekonfigurasi 0,93891 pu menjadi 0.95897 pu
An Approach Transient Stability Analysis Using Equivalent Impedance Modified in 150 kV South of Sulawesi System Muhammad Ruswandi Djalal; Herman Nawir; Herlambang Setiadi; Andi Imran
JEEE-U (Journal of Electrical and Electronic Engineering-UMSIDA) Vol 1 No 1 (2017): April
Publisher : Muhammadiyah University, Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/jeee-u.v1i1.758

Abstract

One of methods that can be used to determine the stability of a power system if the fault occured is the equal area criterion method. The equal area criterion method (Equal Area Criterion, EAC) is an example of a direct method for predicting the stability and also the critical clearing time (Critical clearing time). However, to calculate the complex calculations required to determine the equivalent impedance of each condition system. In this study used several approaches to facilitate the calculation of the equivalent impedance. This method uses the equation of power losses. This method is equivalent impedance using modified with Ploss and Qloss for Determining Pmax. From the analysis, it can be concluded the use of this method is quite accurate in analyzing or calculating the transient stability of the generator system in South Sulawesi, with each loading condition, before, during and after short circuit. Generator being looked at is Bakaru, Pare, Suppa, Barru and Sengkang.
Optimal Design of Power System Stabilizer In Bakaru Power Plant Using Bat Algorithm Muhammad Ruswandi Djalal; Muhammad Yusuf Yunus; Herman Nawir; Andi Imran
JEEE-U (Journal of Electrical and Electronic Engineering-UMSIDA) Vol 1 No 2 (2017): October
Publisher : Muhammadiyah University, Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/jeee-u.v1i2.1017

Abstract

The problem of using Power System Stabilizer (PSS) in generator excitation is how to determine optimal PSS parameter. To overcome these problems, the authors use a method of intelligent bats based algorithm to design PSS. Bat Algorithm is an algorithm that works based on bat behavior in search of food source. Correlation with this research is, food sources sought by bats represent as PSS parameters to be optimized. Bat's algorithm will work based on a specified destination function, namely Integral Time Absolute Error (ITAE). In this research will be seen the deviation of velocity and rotor angle of each generator, in case of disturbance in bakaru generator. The analysis results show that the uncontrolled system produces a large overshoot oscillation, and after the addition of PSS oscillation control equipment can be muted. So that the overshoot and settling time of each generator can be reduced and the generator can quickly go to steady state condition.
Rancang Bangun Sistem Pentanahan Penangkal Petir Pada Tanah Basah dan Tanah Kering pada Laboratorium Teknik Konversi Energi Herman Nawir; Muhammad Ruswandi Djalal; Sonong Sonong
JEEE-U (Journal of Electrical and Electronic Engineering-UMSIDA) Vol 2 No 2 (2018): October
Publisher : Muhammadiyah University, Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/jeee-u.v2i2.1581

Abstract

Lightning rods in the Laboratory of Energy and Protection Distribution System of Ujung Pandang State Polytechnic are not functioning properly so the resistance resistance tends to be large, this is not good for earthing. This problem can be overcome by remaking lightning rods on wet and dry soils. This activity was carried out to reduce the value of resistance resistance in connection with this, this activity was carried out by designing, assembling and collecting data carried out by testing, while data analysis was carried out by counting. Based on the results of the discussion concluded that the resistance resistance value obtained is smaller than the previous device. Evidenced by the results of the test where the resistance value on the rod electrode in dry conditions ranged from 1.56 to 2.40 Ohm while the previous tool ranged from 1.6 to 9.0 Ohm. Then for wet soil conditions that range from 0.45 to 1.29 Ohm, while the previous tool is around 1.8 - 5.25 Ohm
Rancang Bangun Modul Pembelajaran Bengkel Listrik Sonong Sonong; Herman Nauwir; Muhammad Ruswandi Djalal
JEEE-U (Journal of Electrical and Electronic Engineering-UMSIDA) Vol 3 No 1 (2019): April
Publisher : Muhammadiyah University, Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/jeee-u.v3i1.1924

Abstract

Electric motor is an electric machine that has a function as a converter of electrical energy into mechanical energy. Electric motors are widely used as movers because they are better in terms of technical and economical, but have disadvantages such as large initial currents so that they cannot last long, to overcome this can be used Y-utan star starting method both manually and automatically created in a panel box. In the operation and manufacture of a protection system for a 3 phase induction motor, some supporting equipment can be arranged in a panel box so that motor performance can be maximized. The results of this tool design are in the form of a panel box in which there are three types of circuits, namely: 3 phase induction motor operation circuit with the starting Y-∆ automatically, reversing the direction of 3 phase induction motor rotation, and 3 phase induction motor operation in two places. Where the series is equipped with a protection system and can be operated manually and automatically.
Pemanfaatan Limbah Eceng Gondok Sebagai Energi Biogas Dengan Menggunakan Digester Herman Nawir; Muhammad Ruswandi Djalal; Apollo Apollo
JEEE-U (Journal of Electrical and Electronic Engineering-UMSIDA) Vol 2 No 2 (2018): October
Publisher : Muhammadiyah University, Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/jeee-u.v2i2.1582

Abstract

Biogas is an alternative energy in the form of gas formed from the process of fermentation of organic materials. One of the most abundant organic materials is water hyacinth. This research aims to design the tool that will be used to process water hyacinth so that it can produce biogas energy. The main components of the equipment made consist of digester, water trap, gas container, and gas stove, each made 3 appliances. The experiment was conducted using 3 pieces of digester where each digester was filled with 10kg of water hyacinth and different starter. Digester A uses a 0.5 liter EM4 starter mixed with 4.5 liters of water. Digester B using starter 5 kg of cow dung mixed with water 3 liters. And digester C using starter 5 kg of cow dung mixed with 0.5 liters EM4 and 4, 5 liters of water. Then see the development of biogas during the fermentation process (35 days). From the results of this study can be obtained biogas pressure, temperature, acidity (pH) and the duration of the flame generated by the means of producing biogas using this digester and can be applied to the stove. The pressure change produced by digester C is greater than the pressure generated from digesters A and B. The temperature changes produced in digester C are greater than the temperature produced by digesters A and B. The initial pH value of mixing for digester A is pH 6.3, digester B with pH 7.5 and digester C with pH 5.5. The pH value after biogas was produced for digester A with pH 7.5, digester B with pH 7.5 and digester C with pH 7.6. This corresponds to a good pH for the growth of biogas-forming microbes, ranging from 6.4 to 7.8. The fire generated on the blue flame test, with the total length of the flame for each digester is 54 minutes 46 seconds.
Penempatan Kapasitor Shunt Pada Sistem Kelistrikan 150 Kv Sulselrabar Muhammad Ruswandi Djalal; Herman Herman
JEEE-U (Journal of Electrical and Electronic Engineering-UMSIDA) Vol 2 No 2 (2018): October
Publisher : Muhammadiyah University, Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/jeee-u.v2i2.1584

Abstract

Power flow study is the determination or calculation of the voltage, current and power factor or reactive power that is present at various points in a power grid in the normal state, whether current or expected to occur in the future. From the result of normal condition analysis, it is obtained the critical voltage profile on bus 31 tonasa and used as the candidate for mounting capacitor. From the calculation results obtained capacities installed 16.0413 Mvar. From the simulation results before the installation and after installation of the capacitor visible improvement of voltage profile and channel losses. The channel losses prior to installation are 32,649 MW and after installation of 31,834 MW. For voltage profiles, some buses also look better, than before in critical conditions to be marginal. On the previous bus tonasa 0.933 pu to 0.953043 pu
Modification of the Vertical Axis with Variations in the Number of Blades of the Savonius Wind Turbine Herman Nawir; Muhammad Ruswandi Djalal; Adnan Ainun Hasri; Andi Wely Fauziah
Journal of Advanced Technology and Multidiscipline Vol. 2 No. 1 (2023): Journal of Advanced Technology and Multidiscipline
Publisher : Faculty of Advanced Technology and Multidiscipline Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jatm.v2i1.40610

Abstract

The potential wind speed in Indonesia is generally low at 3 m/s to 7 m/s so that this type of vertical axis turbine is considered very suitable for use in wind conditions in Indonesia. There are several types of vertical axis wind turbines. One type of vertical axis wind turbine is the Savonius wind turbine. Many advantages that this type of wind turbine has, such as being able to receive wind from all directions, easy and cheap to manufacture, and can rotate at a fairly low angular speed. This test was carried out to determine the performance of conventional and modified savonius turbines with 2 and 3 blades variables in each turbine blade shape. The form of modification made is by changing the shape of the blade twisting by 45o. The turbine is carried out on a laboratory scale with a wind source using a fan that is directly opposite the turbine. The results showed that the highest turbine power occurred in a modified 2-blade turbine, namely 1.88 Watt with a torque value of 0.04 Nm and a shaft rotation of 450 rpm. The highest rotation value is also obtained by 2 modified blades at a wind speed of 6 m/s producing 896 rpm. However, the highest torque value is obtained by a conventional 2-blade turbine with a value of 0.136 Nm. The highest turbine efficiency in each turbine is obtained by a modified 2 blade turbine with an efficiency value of 36.92% while the highest turbine efficiency for a modified 3 blade turbine reaches 11.69% which is considered less efficient than other turbines.
Co-Authors Adnan Ainun Hasri Andi Imran Andi Wely Fauziah Apollo Apollo Hendra, Jerry M. Herlambang Setiadi Herlambang Setiadi Muhammad Ruswandi Djalal Muhammad Yusuf Yunus Sonong Sukma Abadi Syaid, Muh. Ishak