Jurnal Rekayasa elektrika
The journal publishes original papers in the field of electrical, computer and informatics engineering which covers, but not limited to, the following scope: Electronics: Electronic Materials, Microelectronic System, Design and Implementation of Application Specific Integrated Circuits (ASIC), VLSI Design, System-on-a-Chip (SoC) and Electronic Instrumentation Using CAD Tools, digital signal & data Processing, , Biomedical Transducers and instrumentation, Medical Imaging Equipment and Techniques, Biomedical Imaging and Image Processing, Biomechanics and Rehabilitation Engineering, Biomaterials and Drug Delivery Systems; Electrical: Electrical Engineering Materials, Electric Power Generation, Transmission and Distribution, Power Electronics, Power Quality, Power Economic, FACTS, Renewable Energy, Electric Traction, Electromagnetic Compatibility, High Voltage Insulation Technologies, High Voltage Apparatuses, Lightning Detection and Protection, Power System Analysis, SCADA, Electrical Measurements; Telecommunication: Modulation and Signal Processing for Telecommunication, Information Theory and Coding, Antenna and Wave Propagation, Wireless and Mobile Communications, Radio Communication, Communication Electronics and Microwave, Radar Imaging, Distributed Platform, Communication Network and Systems, Telematics Services and Security Network; Control: Optimal, Robust and Adaptive Controls, Non Linear and Stochastic Controls, Modeling and Identification, Robotics, Image Based Control, Hybrid and Switching Control, Process Optimization and Scheduling, Control and Intelligent Systems, Artificial Intelligent and Expert System, Fuzzy Logic and Neural Network, Complex Adaptive Systems; Computer and Informatics: Computer Architecture, Parallel and Distributed Computer, Pervasive Computing, Computer Network, Embedded System, Human—Computer Interaction, Virtual/Augmented Reality, Computer Security, Software Engineering (Software: Lifecycle, Management, Engineering Process, Engineering Tools and Methods), Programming (Programming Methodology and Paradigm), Data Engineering (Data and Knowledge level Modeling, Information Management (DB) practices, Knowledge Based Management System, Knowledge Discovery in Data), Network Traffic Modeling, Performance Modeling, Dependable Computing, High Performance Computing, Computer Security, Human-Machine Interface, Stochastic Systems, Information Theory, Intelligent Systems, IT Governance, Networking Technology, Optical Communication Technology, Next Generation Media, Robotic Instrumentation, Information Search Engine, Multimedia Security, Computer Vision, Information Retrieval, Intelligent System, Distributed Computing System, Mobile Processing, Next Network Generation, Computer Network Security, Natural Language Processing, Business Process, Cognitive Systems. Signal and System: Detection, estimation and prediction for signals and systems, Pattern recognition and classification, Artificial intelligence and data analytics, Machine learning, Deep learning, Audio and speech signal processing, Image, video, and multimedia signal processing, Sensor signal processing, Biomedical signal processing and systems, Bio-inspired systems, Coding and compression, Cryptography, and information hiding
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<![CDATA[Analisa Peralihan Deviasi Frekuensi Sistem Kendali Frekuensi Tenaga Listrik dengan Metoda Kendali Optimal ]]>
<![CDATA[Heru Dibyo Laksono]]>
<![CDATA[ Jurnal Rekayasa Elektrika Vol 12, No 1 (2016) ]]>
Publisher : <![CDATA[Universitas Syiah Kuala ]]>
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DOI: 10.17529/jre.v12i1.2956
<![CDATA[This journal discusses about the analysis of frequency transition deviation of power frequency control system with Optimal control methods. The response of frequency transition deviation of power frequency control system is one of indicator in the performance of the power system during disturbances. These disturbances cause changes in the parameters value which result in power frequency control system will be disrupted and resulted system is not able to work normally after the disturbances. One of disturbance often occurs in power system is a sudden load changes. Sudden load changes cause of decreasing or increasing in the value of frequencies around the center of its operations. By using the optimal control method consists of Linear Quadratic Regulator (LQR) method and Linear Quadratic Regulator with weights function on the output (LQRy) are analyzed frequency transition deviation of power frequency control system type of Non-Reheat, Reheat and Hydraulic. The results obtained for the Linear Quadratic Regulator (LQR) method, the power frequency control system type of Non–Reheat has the smallest values of the transition parameter at the values of the transition parameter power frequency control system type of Reheat and Hydraulic. The values of the transition parameter power frequency control system type of Non-Reheat are 0.1266 seconds in time rise, 0.3451 seconds in settling time, 0.3451 seconds in peak time, 3.1972% in maximum overshoot and 0.0069 in peak value. For the Linear Quadratic Regulator method with weights function on the output (LQRy) power frequency control system type of Hydraulic has the smallest values of the transition parameter compared with the values of the transition parameter power frequency control system type of Non-Reheat and Reheat. The values of the transition parameter power frequency control system type of Hydraulic are 0.0451 seconds in time rise, 0.0731 seconds in settling time, 0.1300 seconds in peak time, 0.0531% in maximum overshoot and 0.0032 in peak value. ]]>
<![CDATA[Pembaruan Aplikasi Paperless Office Universitas Syiah Kuala ]]>
<![CDATA[Taufik Fuadi Abidin]]>;
<![CDATA[Fitra Riyanda]]>;
<![CDATA[Rahmad Dawood]]>
<![CDATA[ Jurnal Rekayasa Elektrika Vol 12, No 1 (2016) ]]>
Publisher : <![CDATA[Universitas Syiah Kuala ]]>
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DOI: 10.17529/jre.v12i1.3246
<![CDATA[Paperless Office (PLO) is a web-based application that was created to facilitate digital office communication such as sending memos, letters, and posting news. It was initially created by Bambang Prastowo from Universitas Gajah Mada. The goals of using PLO are to reduce paper usage, speed up internal communication, and to simplify the management of correspondence in digital form. Syiah Kuala University (Unsyiah) has implemented PLO since early 2013. This paper aims to analyze the level of activity and users satisfaction of the renew PLO. The renew is done by making the web application more responsive and adding new features that do not exist in the earlier version. The results show that users satisfaction level increases, observed from system quality, information, and services. Variables that affect the level of activity, based on Pearson and Spearman correlations, are X1, X13,X20,X33, X36,X38, andX43, while the variables that affect the level of users satisfaction are X42 and X44.]]>
<![CDATA[Peningkatan Sistem Keamanan Autentikasi Single Sign On (SSO) Menggunakan Algoritma AES dan One-Time Password Studi Kasus: SSO Universitas Ubudiyah Indonesia ]]>
<![CDATA[Zuhar Musliyana]]>;
<![CDATA[Teuku Yuliar Arif]]>;
<![CDATA[Rizal Munadi]]>
<![CDATA[ Jurnal Rekayasa Elektrika Vol 12, No 1 (2016) ]]>
Publisher : <![CDATA[Universitas Syiah Kuala ]]>
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DOI: 10.17529/jre.v12i1.2896
<![CDATA[Single Sign On (SSO) merupakan model autentikasi independen yang diimplementasikan Universitas Ubudiyah Indonesia (UUI) menggunakan Message-Digest Algorithm 5 (MD5) dan web service NuSOAP berbasis bahasa pemograman PHP. Sistem ini berjalan pada protokol Hypertext Transfer Protocol (HTTP). Faktanya penggunaan protokol HTTP ini sangat rentan terhadap berbagai jenis serangan karena data dikirim dalam bentuk plaintext tanpa ada proses enkripsi dan penerapan algoritma MD5 pada autentikasi login juga rentan terhadap serangan dictionary attacks dan rainbow tables. Disisi lain, Penggunaan web service NuSOAP juga menciptakan celah keamanan karena pengiriman dan penerimaan payload tidak dienkripsi. Saat ini diketahui sudah ada beberapa metode yang dapat digunakan untuk meningkatkan pengamanan kerentanan tersebut diantaranya yaitu menggunakan Hypertext Transfer Protocol Secure (HTTPS), Secure Hypertext Transfer Protocol (SHTTP) dan Completely Automated Public Turing test to tell Computers and Humans Apart (CAPTCHA). Namun beberapa hasil penelitian terkait memperlihatkan masih terdapat beberapa kelemahan dari penggunaan HTTPS, SHTTP dan CAPTCHA. Penelitian ini mengusulkan penggunaan algoritma Advanced Encryption Standard (AES) dengan pembangkit kunci dinamis dan metode One-Time Password (OTP) berbasis sinkronisasi waktu dengan kombinasi salt untuk meningkatkan keamanan pada autentikasi SSO UUI. Hasil pengujian menunjukkan penerapan algoritma AES dan OTP dapat mengamankan proses autentikasi SSO dari serangan dictionary attack dan rainbow table.]]>
<![CDATA[Komputasi Aliran Daya Optimal Sistem Tenaga Skala Besar dengan Metode Primal Dual Interior Point ]]>
<![CDATA[Syafii Syafii]]>;
<![CDATA[Ikhwannul Kadri Masrul]]>
<![CDATA[ Jurnal Rekayasa Elektrika Vol 12, No 1 (2016) ]]>
Publisher : <![CDATA[Universitas Syiah Kuala ]]>
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DOI: 10.17529/jre.v12i1.2428
<![CDATA[This paper focuses on the use of Primal Dual Interior Point method in the analysis of optimal power flow. Optimal power flow analysis with Primal Dual Interior Point method then compared with Linear Programming Method using Matpower program. The simulation results show that the computation results of Primal Dual Interior Point similar with Linear Programming Method for total cost of generation and large power generated by each power plant. But in terms of computation time Primal Dual Interior Point method is faster than the method of Linear Programming, especially for large systems. Primal Dual Interior Point method have solved the problem in 40.59 seconds, while Linear Programming method takes longer 239.72 seconds for large-scale system 9241 bus. This is because the settlement PDIP algorithm starts from the starting point x0, which is located within the area of feasible move towards the optimal point, in contrast to the simplex method that moves along the border of the feasible from one extreme point to the other extreme point. Thus Primal Dual Interior Point method have more efficient in solving optimal power flow problem of large-scale power systems.]]>
<![CDATA[Optimalisasi Penempatan dan Besaran Shunt Capacitor pada Fasilitas Interkoneksi Generator Distribusi (Studi Kasus di PT PLN (Persero) Rayon Dolok Sanggul) ]]>
<![CDATA[Darma Wijaya]]>
<![CDATA[ Jurnal Rekayasa Elektrika Vol 12, No 1 (2016) ]]>
Publisher : <![CDATA[Universitas Syiah Kuala ]]>
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DOI: 10.17529/jre.v12i1.3094
<![CDATA[The existence of distributed generation (DG) has improved voltage regulation, but it reverses power factor and network losses on Dolok Sanggul distribution system. The operation scheme and the lenght of interconnection facility of DG have caused the increase reactive power flow on distribution system. The increase in reactive power flow could be compensated by the installment of shunt capacitor. Optimal Capacitor Placement ETAP Power Station with the objective function is to minimize the cost of distribution system was used to search the placement and the size of shunt capacitor in the interconnection facility of DG. After the installment of shunt capacitor, the cost of distribution system can be saved Rp 2,092,403,071,- (US$ 152,208) in Peak Load Time (WBP) and Rp 8,390,300,625,- (US$ 610,337) in Outside Peak Load Time (LWBP) in the five-year period.]]>
<![CDATA[Optimalisasi Penempatan dan Besaran Shunt Capacitor pada Fasilitas Interkoneksi Generator Distribusi (Studi Kasus di PT PLN (Persero) Rayon Dolok Sanggul) ]]>
<![CDATA[Darma Wijaya]]>
<![CDATA[ Jurnal Rekayasa Elektrika Vol 12, No 1 (2016) ]]>
Publisher : <![CDATA[Universitas Syiah Kuala ]]>
Show Abstract
|
Download Original
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Original Source
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Check in Google Scholar
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DOI: 10.17529/jre.v12i1.3094
<![CDATA[The existence of distributed generation (DG) has improved voltage regulation, but it reverses power factor and network losses on Dolok Sanggul distribution system. The operation scheme and the lenght of interconnection facility of DG have caused the increase reactive power flow on distribution system. The increase in reactive power flow could be compensated by the installment of shunt capacitor. Optimal Capacitor Placement ETAP Power Station with the objective function is to minimize the cost of distribution system was used to search the placement and the size of shunt capacitor in the interconnection facility of DG. After the installment of shunt capacitor, the cost of distribution system can be saved Rp 2,092,403,071,- (US$ 152,208) in Peak Load Time (WBP) and Rp 8,390,300,625,- (US$ 610,337) in Outside Peak Load Time (LWBP) in the five-year period.]]>
<![CDATA[Analisa Peralihan Deviasi Frekuensi Sistem Kendali Frekuensi Tenaga Listrik dengan Metoda Kendali Optimal ]]>
<![CDATA[Heru Dibyo Laksono]]>
<![CDATA[ Jurnal Rekayasa Elektrika Vol 12, No 1 (2016) ]]>
Publisher : <![CDATA[Universitas Syiah Kuala ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.17529/jre.v12i1.2956
<![CDATA[This journal discusses about the analysis of frequency transition deviation of power frequency control system with Optimal control methods. The response of frequency transition deviation of power frequency control system is one of indicator in the performance of the power system during disturbances. These disturbances cause changes in the parameters value which result in power frequency control system will be disrupted and resulted system is not able to work normally after the disturbances. One of disturbance often occurs in power system is a sudden load changes. Sudden load changes cause of decreasing or increasing in the value of frequencies around the center of its operations. By using the optimal control method consists of Linear Quadratic Regulator (LQR) method and Linear Quadratic Regulator with weights function on the output (LQRy) are analyzed frequency transition deviation of power frequency control system type of Non-Reheat, Reheat and Hydraulic. The results obtained for the Linear Quadratic Regulator (LQR) method, the power frequency control system type of Non–Reheat has the smallest values of the transition parameter at the values of the transition parameter power frequency control system type of Reheat and Hydraulic. The values of the transition parameter power frequency control system type of Non-Reheat are 0.1266 seconds in time rise, 0.3451 seconds in settling time, 0.3451 seconds in peak time, 3.1972% in maximum overshoot and 0.0069 in peak value. For the Linear Quadratic Regulator method with weights function on the output (LQRy) power frequency control system type of Hydraulic has the smallest values of the transition parameter compared with the values of the transition parameter power frequency control system type of Non-Reheat and Reheat. The values of the transition parameter power frequency control system type of Hydraulic are 0.0451 seconds in time rise, 0.0731 seconds in settling time, 0.1300 seconds in peak time, 0.0531% in maximum overshoot and 0.0032 in peak value. ]]>
<![CDATA[Pembaruan Aplikasi Paperless Office Universitas Syiah Kuala ]]>
<![CDATA[Taufik Fuadi Abidin]]>;
<![CDATA[Fitra Riyanda]]>;
<![CDATA[Rahmad Dawood]]>
<![CDATA[ Jurnal Rekayasa Elektrika Vol 12, No 1 (2016) ]]>
Publisher : <![CDATA[Universitas Syiah Kuala ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.17529/jre.v12i1.3246
<![CDATA[Paperless Office (PLO) is a web-based application that was created to facilitate digital office communication such as sending memos, letters, and posting news. It was initially created by Bambang Prastowo from Universitas Gajah Mada. The goals of using PLO are to reduce paper usage, speed up internal communication, and to simplify the management of correspondence in digital form. Syiah Kuala University (Unsyiah) has implemented PLO since early 2013. This paper aims to analyze the level of activity and users satisfaction of the renew PLO. The renew is done by making the web application more responsive and adding new features that do not exist in the earlier version. The results show that users satisfaction level increases, observed from system quality, information, and services. Variables that affect the level of activity, based on Pearson and Spearman correlations, are X1, X13,X20,X33, X36,X38, andX43, while the variables that affect the level of users satisfaction are X42 and X44.]]>
<![CDATA[Peningkatan Sistem Keamanan Autentikasi Single Sign On (SSO) Menggunakan Algoritma AES dan One-Time Password Studi Kasus: SSO Universitas Ubudiyah Indonesia ]]>
<![CDATA[Zuhar Musliyana]]>;
<![CDATA[Teuku Yuliar Arif]]>;
<![CDATA[Rizal Munadi]]>
<![CDATA[ Jurnal Rekayasa Elektrika Vol 12, No 1 (2016) ]]>
Publisher : <![CDATA[Universitas Syiah Kuala ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.17529/jre.v12i1.2896
<![CDATA[Single Sign On (SSO) merupakan model autentikasi independen yang diimplementasikan Universitas Ubudiyah Indonesia (UUI) menggunakan Message-Digest Algorithm 5 (MD5) dan web service NuSOAP berbasis bahasa pemograman PHP. Sistem ini berjalan pada protokol Hypertext Transfer Protocol (HTTP). Faktanya penggunaan protokol HTTP ini sangat rentan terhadap berbagai jenis serangan karena data dikirim dalam bentuk plaintext tanpa ada proses enkripsi dan penerapan algoritma MD5 pada autentikasi login juga rentan terhadap serangan dictionary attacks dan rainbow tables. Disisi lain, Penggunaan web service NuSOAP juga menciptakan celah keamanan karena pengiriman dan penerimaan payload tidak dienkripsi. Saat ini diketahui sudah ada beberapa metode yang dapat digunakan untuk meningkatkan pengamanan kerentanan tersebut diantaranya yaitu menggunakan Hypertext Transfer Protocol Secure (HTTPS), Secure Hypertext Transfer Protocol (SHTTP) dan Completely Automated Public Turing test to tell Computers and Humans Apart (CAPTCHA). Namun beberapa hasil penelitian terkait memperlihatkan masih terdapat beberapa kelemahan dari penggunaan HTTPS, SHTTP dan CAPTCHA. Penelitian ini mengusulkan penggunaan algoritma Advanced Encryption Standard (AES) dengan pembangkit kunci dinamis dan metode One-Time Password (OTP) berbasis sinkronisasi waktu dengan kombinasi salt untuk meningkatkan keamanan pada autentikasi SSO UUI. Hasil pengujian menunjukkan penerapan algoritma AES dan OTP dapat mengamankan proses autentikasi SSO dari serangan dictionary attack dan rainbow table.]]>
<![CDATA[Komputasi Aliran Daya Optimal Sistem Tenaga Skala Besar dengan Metode Primal Dual Interior Point ]]>
<![CDATA[Syafii Syafii]]>;
<![CDATA[Ikhwannul Kadri Masrul]]>
<![CDATA[ Jurnal Rekayasa Elektrika Vol 12, No 1 (2016) ]]>
Publisher : <![CDATA[Universitas Syiah Kuala ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.17529/jre.v12i1.2428
<![CDATA[This paper focuses on the use of Primal Dual Interior Point method in the analysis of optimal power flow. Optimal power flow analysis with Primal Dual Interior Point method then compared with Linear Programming Method using Matpower program. The simulation results show that the computation results of Primal Dual Interior Point similar with Linear Programming Method for total cost of generation and large power generated by each power plant. But in terms of computation time Primal Dual Interior Point method is faster than the method of Linear Programming, especially for large systems. Primal Dual Interior Point method have solved the problem in 40.59 seconds, while Linear Programming method takes longer 239.72 seconds for large-scale system 9241 bus. This is because the settlement PDIP algorithm starts from the starting point x0, which is located within the area of feasible move towards the optimal point, in contrast to the simplex method that moves along the border of the feasible from one extreme point to the other extreme point. Thus Primal Dual Interior Point method have more efficient in solving optimal power flow problem of large-scale power systems.]]>
