JEEE-U (Journal of Electrical and Electronic Engineering-UMSIDA)
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An Approach Transient Stability Analysis Using Equivalent Impedance Modified in 150 kV South of Sulawesi System: Pendekatan Analisis Stabilitas Transien Menggunakan Equivalent Impedance Modified Pada Sistem 150 kV Sulawesi Selatan
Full text linkOne 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
Rekonfigurasi Jaringan Distribusi Radial Menggunakan Modified Firefly Algorithms (MFA) Pada Penyulang Tanjung Rayon Jombang: Radial Distribution Network Reconfiguration Using Modified Firefly Algorithms (MFA) at the Tanjung Rayon Feeder Jombang
Full text linkReconfiguring a distribution network is necessary to reduce power loss and increase system reliability.Different distribution forms will affect the large power losses so that it is necessary to reset the network configuration.Reconfiguration is done by opening and closing switches on the best distribution network.The amount of feeder and bus on the network will be difficult and require a very long time if calculated manually.The repeater of Tanjung Rayon Jombang consists of 41 Buses and 44 feeders.Therefore it is necessary to solve the problem by using artificial intelligence or Artificial Intelligent (AI).Firefly Algorithms (FA) widely used research in solving the optimization problem.Modified Firefly Algorithms (MFA) is an FA modification designed to solve discrete combination optimization problems.MFAs can search for the best network reconfiguration so that it can reduce 12,0866 kWatt or 12,6881% in Cape repeater.With the end voltage before reconfiguration 0.92959 pu to 0.94072 pu.This method can later use other artificial intelligence or can be applied to other repeater, thus reducing the losses of electrical energy
Perancangan Sistem Telemetri Untuk Mengukur Intensitas Cahaya Berbasis Sensor Light Dependent Resistor Dan Arduino Uno: Telemetry System Design for Measuring Light Intensity Based on Light Dependent Resistor And Arduino Uno Sensor Sensors
Full text linkLight is a propagation of electromagnetic waves that spread all directions that play an important role in everyday life because it is an absolute part of life and without the light of life on earth can not develop. The amount of light illuminance is necessary to know because basically humans require adequate lighting. The instrument for measuring light illuminance is a luxmeter or light meter. However, this gauge is difficult to obtain and the price of the tool is expensive so that it can only be found in certain school laboratories or colleges. While telemetry is the process of measuring the parameters of an object (objects, space, natural conditions) that the measurement results are transmitted to other places via data transmission without or using a cable (wireless). The purpose of this study is to measure, to know the conditions of light intensity. This research uses experimental model of light intensity measurement using independent measuring instrument with combination of LDR and Arduino uno consisting of transmitter and receiver. In the transmitter there are LDR, Arduino Uno, and RF Module Board 433 MHz components, while the receiver consists of Arduino Uno, laptop, and RF Module Board 433 MHz. In this design is also done a variety of testing tools using distance variables. Overall this tool is working well. The system has successfully delivered telemetry measurement results with a range of conditions without a wall barrier with a maximum distance of <28 m. And conditions there are obstacles diding with a maximum distance <13.2
Perencanaan Sistem Pentanahan Tenaga Listrik Terintegrasi Pada Bangunan: Planning of Integrated Electric Power Grounding System in Building
Full text linkTerms of reliability and security is an absolute thing required in conducting the design of installation of Power System. To obtain the reliability and safety of the use of Power on the Building there must be a good interconnection between Lightning System (Lightning System), Grounding of existing electronic devices in buildings and Grounding System Grounding (Grounding System) it. The interconnection of the three systems is carried out on a Bar Plate located in the Control Room, with a good security indication value and a reliable system if at the point of Bar Plate located in the Control Room has a value below 1 Ω. Using the Dwight formula in obtaining the earthing resistance value of the Electrical Power System on clay as an example shows the depth of Copper Rod 1 m has a value of 0.72 Ω. So by doing a good interconnection between Lightning Trap System (Lightnig System), Grounding Electronic Devices and Grounding System Power (Grounding System) in a building will get a reliable and safe Power System Power
Perancangan Sensor Suhu Menggunakan Metode Interpolasi Lagrange Berbasis Serat Optik Berstruktur Sms (Singlemode-Multimode-Singlemode): Temperature Sensor Design Using Lagrange Interpolation Method Based on Sms Structured Optical Fiber (Singlemode-Multimode-Singlemode)
Full text linkIn this research, a temperature measurement technique was developed using fiber optic structured SMS and OTDR. Where in optical fibers singlemode-multimode-singlemode (SMS) and Optical Time Domain Reflectometer (OTDR) has been widely used for various sensors in detecting damage to the building earlier. Thereafter, calculations are performed using Borland Delphi's Lagrange Interpolation method 7. Characteristics of each of the fiber-optic fiber sensor structures that have been fabricated using multimode optical fibers with lengths of 5.5 cm, 6 cm, 6.5 cm and 7 cm and with use its operating wavelength is 1310 nm. Testing rangesuhusebesar 37oC - 67oC with every temperature rise of 10oC.Berdasarkan research results, multimode length 5.5 cm there is a graph increase with R2 of 93.7%. The increase in temperature, the loss of power generated greater. While the multimode length 6 cm, 6.5 cm, and 7 cm indicate that there is a decrease graph, for multimode length 6 cm with R2 equal to 97,7%, for multimode length 6,5 cm with R2 equal to 99,7%, for long multimode 7 cm with R2 99.2%. While based on result of calculation by Lagrange Interpolation method for suhuberstruktur SMS sensor based on result of calculation using Lagrange Interpolation method with different multimode length have same data regularity compared to temperature sensor structured SMS based on measurement result. For example, as long as 7 cm long multimode yield R2 of 99.2% for the measurement result and yield R2 of 99.3% for the calculation result
Optimal Design of Power System Stabilizer In Bakaru Power Plant Using Bat Algorithm: Perancangan Optimal Stabilizer Sistem Tenaga Pada PLTU Bakaru Menggunakan Algoritma Kelelawar
Full text linkThe 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
Design Engineering Instrumental Carotid Pulse System in Analytical Heart's Dynamic With Continuous Wavelet Transform Method: Rekayasa Perancangan Sistem Denyut Karotis Instrumental Pada Analitis Dinamis Jantung Dengan Metode Continuous Wavelet Transform
Full text linkKlasifikasi sinyal Carotid Pulse sangat penting untuk mengetahui proses terjadinya tekanan darah dalam mengalirkan darah melewati katup-katup jantung menuju ruang-ruang jantung dan paru-paru serta mendukung analisa suara jantung yang ada untuk mendeteksi murmur, mengklasifikasikan suara jantung normal dan tidak normal, serta untuk menjelaskan dinamika jantung, oleh sebab itu pada penelitian ini dilakukan beberapa pekerjaan pendahuluan pada pembuatan instrumentasi pendeteksian sinyal tekanan darah (Carotid Pulse).Pada penelitian ini dihasilkan informas Low Pass Filter Analog Orde 4 dengan frekuensi cutoff 100 Hz penguatan -3 dB terjadi di area frekuensi 120 Hz. Hasil uji Notch Filter dihasilkan tegangan output terkecil di frekuensi 50 Hz dengan besar Vout (0.14 ± 0.00) volt dengan Quality factor (Q) sebesar 6.28. Analisa sinyal Carotid Pulse dengan DFT memberikan informasi bahwa pada tekanan darah, area frekuensinya di antara 1 Hz sampai 20 Hz. Sinyal Carotid Pulse untuk siklus pertama Frekuensi tertingginya (6.81 ± 0.41) Hz dan merupakan gelombang P yang menggambarkan kenaikan Carotid Pulse secara tiba-tiba dari pemompaan darah pada ventrikel kiri menuju aorta hinggga mencapai puncak. Analisa dengan menggunakan CWT menghasilkan data keterangan waktu yang menunjukkan waktu terjadinya frekuensi tertinggi sinyal Carotid Pulse. Penelitian ini selanjutnya akan dikembangkan pada Multimodal Cardiac Analysis untuk mendapatkan informasi anatomi dan fisiologi jantung yang lebih kompleks
Characteristic Test of Current Transformer Based EMTP Shoftware: Uji Karakteristik Perangkat Lunak EMTP Berbasis Transformator Saat Ini
Full text linkPemodelan transformator arus merupakan salah satu cara yang praktis untuk mengevaluasi unjuk kerja perlengkapan proteksi. Pada makalah ini disajikan penggunaan perangkat lunak Electromagnetic Transients Program (EMTP), The Output Processor (TOP), dan Mathcad® untuk memodelkan transformator arus (CT) untuk mendapatkan kurva yang menunjukkan karakteristik transformator arus. Disajikan juga pengaruh beban terhadap faktor koreksi rasio dan faktor koreksi sudut fasa transformator arus.Dalam makalah ini transformator arus dimodelkan menggunakan EMTP untuk memvisualkan arus dan tegangan CT. Keluaran dari EMTP ditransfer ke dalam Mathcad melalui perangkat lunak TOP untuk menguji transformator arus terhadap keakuratan dan pengaruh bebannya. Model transformator arus yang dibahas adalah model CT 1200/5 kelas C800. Hasil simulasi menunjukkan bahwa untuk uji karakteristik dengan metode 9 titik memberikan hasil yang terbaik untuk menampilkan karakteristik CT. Hasil simulasi uji eksitasi CT menunjukkan bahwa error rasio maksimum yang terjadi adalah 0,09%. Hasil simulasi ini mengindikasikan bahwa transformator arus ini dapat digunakan dalam aplikasi pengukuran
Selection the colour of Object With Conveyor Used Robotic Arm: Pemilihan warna Obyek Dengan Lengan Robot Bekas Konveyor
Full text linkConveyor konvensional pada saat ini hanya memindahkan barang saja, tidak bisa mendeteksi warna benda dan perlu tenaga manusia untuk menyortir benda, oleh karena alasan itu, maka dirancang suatu conveyor otomatis. Disebut conveyor otomatis karena conveyor tersebut diletakkan sebuah pendeteksi warna untuk mendeteksi jenis warna benda. Conveyor ini dirancang untuk mendistribusikan benda kayu berukuran 6cm x 6cm x 6cm dengan penggerak motor DC 24 VDC dan pendeteksi warna TCS230 dipasang untuk membedakan warna benda. Conveyor dengan sensor warna juga dilengkapi dengan lengan robot yang diprogram sebagai alat penyortir benda, agar tidak bercampurnya jenis warna berbeda.Hasil penelitian menunjukkan bahwa conveyor dengan sensor warna ini mampu mendeteksi warna dengan sensor warna TCS230 dengan teliti sesuai dengan program yang dimasukan pada mikrokontroler dan robot lengan mampu menyortir dan menempatkan benda sesuai dengan urutan warnanya
Centroid Based Classifier With TF – IDF – ICF for Classfication of Student’s Complaint at Appliation E-Complaint in Muhammadiyah University of Sidoarjo: Classifier Berbasis Centroid Dengan TF – IDF – ICF Untuk Klasifikasi Keluhan Mahasiswa Pada Aplikasi E-Complaint di Universitas Muhammadiyah Sidoarjo
Full text linkText mining mengacu pada proses mengambil informasi berkualitas tinggi dari teks. Informasi berkualitas tinggi biasanya diperoleh melalui peramalan pola dan kecenderungan melalui sarana seperti pembelajaran pola statistik. Salah satu kegiatan penting dalam text mining adalah klasifikasi atau kategorisasi teks. Kategorisasi teks sendiri saat ini memiliki berbagai metode antara lain metode K-Nearest Neighbor, Naïve Bayes, dan Centroid Base Classifier, atau decision tree classification.Pada penelitian ini, klasifikasi keluhan mahasiswa dilakukan dengan metode centroid based classifier dan dengan fitur TF-IDF-ICF, Ada lima tahap yang dilakukan untuk mendapatkan hasil klasifikasi. Tahap pengambilan data keluhan kemudian dilanjutkan dengan tahap preprosesing yaitu mempersiapkan data yang tidak terstruktur sehingga siap digunakan untuk proses selanjutnya, kemudian dilanjutkan dengan proses pembagian data, data dibagi menjadi dua macam yaitu data latih dan data uji, tahap selanjutnya yaitu tahap pelatihan untuk menghasilkan model klasifikasi dan tahap terakhir adalah tahap pengujian yaitu menguji model klasifikasi yang telah dibuat pada tahap pelatihan terhadap data uji. Keluhan untuk pengujian akan diambilkan dari database aplikasi e-complaint Universitas Muhammadiyah Sidoarjo. Adapun hasil uji coba menunjukkan bahwa klasifikasi keluhan dengan algoritma centroid based classifier dan dengan fitur TF-IDF-ICF memiliki rata-rata akurasi yang cukup tinggi yaitu 79.5%. Nilai akurasi akan meningkat dengan meningkatnya data latih dan efesiensi sistem semakin menurun dengan meningkatnya data latih