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28,451 Article Results

A New DG Allocation Approach Based on Biogeography-Based Optimization with Considering Fuzzy Load Uncertainty

10.11591/ijai.v4.i3.pp89-96
Mohammad Sedaghat , Esmaeel Rokrok , Mohammad Bakhshipour
A new distributed generation placement method based on biogeography-based optimization (BBO) is investigated in this paper. A significant novelty of this study lies in considering fuzzy load uncertainty. For this purpose a fuzzy backward- forward sweep load flow is proposed. The main objectives of this study is minimizing power losses and improving voltage profile. A comparative study between optimal location and sizing under typical load condition and fuzzy load uncertainty is presented. To verify the efficiency of proposed BBO method, it is conducted on IEEE 33 bus distribution system, also a comparative study between proposed BBO approach and particle swarm optimization (PSO), Technical-learning based optimization (TLBO), Artificial bee colony (ABC), Imperialist competitive algorithm (ICA) is investigated. The simulation results show the excellent and superior performance of proposed BBO approach in comparison with the other intelligent methods.
Volume: 4
Issue: 3
Page: 89-96
Publish at: 2015-09-01

LEC-TMAC: Improving Energy Consumption & Latency in TMAC Protocol for Wireless Body Area Network

10.11591/ijeecs.v15.i3.pp430-435
Shravan Kumar Upadhayay , Mansi Gupta
The most common protocols for Wireless Body Area Network (WBAN) like TMAC, ZigBeeMAC, Baseline MAC protocol .In this paper, evaluating the effects of LEC-TMAC Protocol wireless body area network basis of Latency and energy consumption. This analysis is important in point of view that the varying requirement of WBAN according to varying conditions. In LEC-TMAC, the application packet rate of nodes a considerable effect is observed on latency and energy consumption for MAC protocols that is presented in the paper. As a conclusion, we invoke a number of new research challenges with regard to prospects of Wireless body area network and other issues.
Volume: 15
Issue: 3
Page: 430-435
Publish at: 2015-09-01

Failure Mode and Effect Analysis of Power Transformer Based on Cloud Model of Weight

10.12928/telkomnika.v13i3.1804
Jianpeng; Shijiazhuang Tiedao University Bian , Xiaoyun; Shijiazhuang Tiedao University Sun , Jing; Shijiazhuang Tiedao University Yang
As the key component of a power system, the power transformer directly impacts the reliability and safety of the system. Failure mode and effects analysis (FMEA) is a methodology used to analyze potential failure modes within a system and has been used extensively to examine the power transformer’s performance in various potential failure scenarios. However, the FMEA method has several flaws; for example, the non-differential analysis of evaluation index and the impossibility of evaluating the actual risk among risk priority number (RPN) values that on the surface are equal. The cloud model of weight incorporates the relative importance of index. This paper proposes applying FMEA based on the cloud model of weight to assess a power transformer for risk, and shows that this method can effectively overcome the defects of traditional FMEA assessment methods.
Volume: 13
Issue: 3
Page: 776-782
Publish at: 2015-09-01

An Intelligent Supplementary Lighting System for the Strawberry Greenhouse

10.12928/telkomnika.v13i3.1973
Zhiliang; Sichuan Agriculture University Kang , Lijia; Sichuan Agriculture University Xu , Fei; Sichuan Agriculture University Xiao
An intelligent supplementary lighting system for a strawberry greenhouse is developed in this study using the embedded controller S3C6410 as core. This system detects the temperature and lighting information of the strawberry greenhouse with the temperature sensor DS18B20 and the lighting sensor 2DU6. It stores, displays, analyzes, and processes the collected information with S3C6410 and transfers the control commands to STC89C52 through APC220-43. Thus, it realizes temperature regulation of the strawberry greenhouse and intelligent supplementary lighting of red–blue LED combined lights. The test result shows that this system not only realizes supplementary lighting as required and by wave bands, but also saves electric power. This system has distinctive features of strong applicability, good expandability, stable and reliable operation, and visual and simple control.
Volume: 13
Issue: 3
Page: 752-758
Publish at: 2015-09-01

ERP Selection Using Fuzzy-MOGA Approach: A Food Enterprise Case Study

10.12928/telkomnika.v13i3.1494
Joko; Graduate School of Bogor Agricultural University Ratono , Kudang Boro; Bogor Agricultural University Seminar , Yandra; Bogor Agricultural University Arkeman , Arif Imam; Bogor Agricultural University Suroso
Selection of Enterprise Resource Planning (ERP) system is a complex decision-making process and one of the critical success factors (CSFs) in ERP adoption life cycle. Many ERP implementation failures are caused by improper package selection. Various approaches have been used, but not using optimization techniques. This study developed a Fuzzy-Multiobjective Genetic Algorithm (Fuzzy-MOGA) approach to optimize the quality of ERP selection criteria that complies with ISO25010 quality standard and cost. A case study was conducted on an agro-industrial company. The result shows the approach of Fuzzy-MOGA with NSGA-II method facilitate a complex decision-making for ERP selection optimally.
Volume: 13
Issue: 3
Page: 1105-1112
Publish at: 2015-09-01

Design of the Monitoring System for Subway Platform Screen Doors Based on CAN Bus

10.11591/ijeecs.v15.i3.pp509-514
Caiqi Hu
In this paper, the application layer communication protocol of CAN bus and the monitoring system for subway platform screen doors are proposed. The system framework is built, hardware of every function module for this system is selected, and the monitoring platform of epigynous machine is designed. On the basis of the above work the communication function of the monitoring system is realized, and specific flowchart is given. This system has been tested at a subway line in Shanghai. And the results prove that the system is in full compliance with industry standards and can completely meet the application requirements. The architecture plan of the system is practically proven to be valid and feasible.
Volume: 15
Issue: 3
Page: 509-514
Publish at: 2015-09-01

Cyber Security Threats in Synchrophasor System in Wide Area Monitoring System

10.11591/ijeecs.v15.i3.pp436-444
Surender Kumar , M K Soni , D K Jain
Cyber security has become a critical priority for electric utilities. With the increase in the use of intelligent measuring devices like PMUs and more advanced communications and information technology in smart grid, the overall attack surface has increased. Cyber attacks against synchrophasor system critical infrastructure are detrimental to the functioning of the society as a whole. This paper presents the latest on cyber security of synchrophasor system in smart grid, specifically; it focuses on the deep understanding of the risk in terms of threats, vulnerabilities and consequences that arise from cyber attacks. Since the research on cyber security for the smart grid is still in its early stage, our objective is to provide an overview, analyze potential cyber security threats, and review existing security solutions in the Wide Area Monitoring System.
Volume: 15
Issue: 3
Page: 436-444
Publish at: 2015-09-01

Providing Authentication by Using Biometric Multimodal Framework for Cloud Computing

10.11591/ijeecs.v15.i3.pp591-596
R. Parimala Mala , C. Jayakumar Kumar
Secret knowledge, like remembering password or token based authentication systems are deemed inconvenience and difficult to use for users such as password may be forgotten or token may be lost. So burdens like remembering password and stolen or forged token based authentication have raised a current trend of biometric authentication system. Now in this current tech world, everyone needs security everywhere to protect our personal gadgets.  So to keep it secured, biometric based approach can be applied for better convenience and ease of use for the user. In this paper, a novel hybrid multimodal approach for ear recognition and finger print recognition has been presented for better robustness and efficiency which can be applied in various fields of applications like authentication in banking transactions. Biometric based human recognition is rapidly gaining popularity due to breached of traditional security systems and the lowering cost of sensors. This paper comprehensively reviews multimodal recognition using ear pattern and finger print data, it is concluded that further research should investigate fast and fully automatic ear-finger print multimodal systems robust to occlusions and deformations.
Volume: 15
Issue: 3
Page: 591-596
Publish at: 2015-09-01

Dual Proportional Integral Controller OF Two-Area Load Frequency Control Based Gravitational Search Algorithm

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/1555
M. Elsisi , M. Soliman , M. A. S. Aboelela , W. Mansour
Gravitational Search Algorithm (GSA) has recently been explored to develop a novel algorithm for distributed optimization and control. This paper proposes a dual Proportional Integral (PI) controller of Load Frequency Control (LFC) based GSA to enhance the damping of oscillations in a two-area power system. A two-area non-reheat thermal system is considered to be equipped with dual PI controller. GSA is utilized to search for optimal controller parameters by minimizing a time-domain based objective function. The performance of the proposed controller has been evaluated with the performance of the conventional PI controller, and  PI  controller  tuned  by  GSA in  order  to  demonstrate  the  superior efficiency of the proposed dual PI controller tuned by GSA. Simulation results emphasis on the better performance of the optimized dual PI controller based on GSA in compare to optimized PI controller based on GSA and conventional one over wide range of operating conditions, and system parameters variations. DOI: http://dx.doi.org/10.11591/telkomnika.v15i3.8454
Volume: 15
Issue: 3
Page: 397-406
Publish at: 2015-09-01

Simplified Linear Configuration Model of 3X3 Single Mode Fiber Coupler using Matrix Transfer

10.12928/telkomnika.v13i3.2094
Saktioto; University of Riau Saktioto , Dedi; Universiti Teknologi Malaysia Irawan , Defrianto; University of Riau Defrianto
Experimental design and operation of a directional fiber coupler having identical-output ratio is successfully fabricated.  The coupling region is imposed by fusion temperature 800-1350 0C injecting the Hydrogen gas at 1Atm. Concurrently the coupled-mode theory is used to model power transfer between the waveguides by using transfer matrix method. By 1mW source input power to one of three input ports, it shows that power propagation among three coupled fibers is normalized; the optical fiber are nearly identical and a similar separation between them. The matrix configuration of  3X3 is also used to calculate the polarization effect of directional fiber coupler. It is found that the incident power polarized with various angle causes power output at both three output ports decrease exponentially. This 3X3 directional fiber coupler design is a significant passive component for various functions power splitter and routers.
Volume: 13
Issue: 3
Page: 846-843
Publish at: 2015-09-01

Design and Implementation of Earth Image Classification Using Unmanned Aerial Vehicle

10.12928/telkomnika.v13i3.1786
Barlian Henryranu; University of Brawijaya Prasetio , Ahmad Afif; University of Brawijaya Supianto , Gembong Edhi; University of Brawijaya Setiawan , Budi Darma; University of Brawijaya Setiawan , Imam; University of Brawijaya Cholissodin , Sabriansyah Rizkiqa; University of Brawijaya Akbar
Research in the field of image classification has been widely applied and developed, especially in the field of satellite imagery. Image classification is the process of grouping the pixels in an image into a number of classes, so that each class can describe an entity with certain characteristics. The research aims to build software that can perform the classification of earth image results from UAV (Unmanned Aerial Vehicle) monitoring. The Image converted into YUV format then classified using Fuzzy Support Vector Machine (FSVM). This research designed elements that UAVs will be used for monitoring as follows: (1) the control station, which designed the software on a computer that is used to send or receive data, and display the data in graphical form, (2) payload, using the camera to capture images and send to the control station, (3) communication system using TCP/IP protocol, and (4) UAV, using X650 quadcopter products from xaircraft. All of data can be received if it is sent by several segmented package into smaller parts. The results of image classification, the image of the monitoring carried out on the UAV sized 256 x 256 pixels with a total number of 450 training data size. It is 16x16 pixel image data. Tests performed to classify the image into 3 classes, namely agricultural area, residential area, and water area. The highest accuracy value of 77.69% obtained by the number of training data as much as 375.
Volume: 13
Issue: 3
Page: 1021-1028
Publish at: 2015-09-01

Scanning-fluorescence Reader Based on Embedded System

10.12928/telkomnika.v13i3.1808
Zhonglong; Xiamen University Zhao , Xiaoping; Xiamen University Min , Shengxiang; Xiamen University Ge , Ningshao; Xiamen University Xia
To measure the concentration of C-reactive protein (CRP) in serum, a portable, scanning-fluorescence reader based on time-resolved fluoroimmunoassays was developed. The scanning-fluorescence reader integrates with the AD7707 converter, which performs at a high accuracy. The photosensitive diode acts as the photoelectric conversion device, an optical module based on optical fibers, which is able to concentrate the excitation light from an LED into a line-shape beam, was designed to sendand receive the optical signal. The device subsequently addresses waveform data using a gradient, smoothing, and binarization method. When the device measures the CRP fluorescence test strip, the results exhibited a good linearity (0.99998) and the CVs (coefficient of variation) were below 5%, which indicate high accuracy. At the same time the system is low cost and small size.
Volume: 13
Issue: 3
Page: 794-805
Publish at: 2015-09-01

A Review on Perturb and Observe Maximum Power Point Tracking in Photovoltaic System

10.12928/telkomnika.v13i3.1439
Rozana; Universiti Teknologi Malaysia Alik , Awang; Universiti Teknologi Malaysia Jusoh , Tole; Universitas Ahmad Dahlan Sutikno
Solar energy is becoming popular and has drawn lots of attention from researchers nowadays. However, the output power of the photovoltaic (PV) arrays varies with solar irradiation and temperature, which affect the efficiency of PV arrays. Therefore, Maximum Power Point Tracking (MPPT) control technique is used to extract the maximum available power from the PV arrays. Perturb and Observe (P&O) algorithm is one of the favorite techniques frequently used due to its simplicity and low cost. Yet, the conventional P&O algorithm has several drawbacks, which leads to power loss and lack of efficiency. This paper presents comparison of the basic P&O algorithm with the modified P&O algorithm used for partial shading condition in terms of complexity, accuracy, cost, and basic concept of each method.
Volume: 13
Issue: 3
Page: 745-751
Publish at: 2015-09-01

Computational Simulation of Comb-plate Expansion Joints

10.12928/telkomnika.v13i3.1978
Liang; Chongqing Jiaotong University Tang , Xiaoyan; Chongqing Jiaotong University Zhang , Jian; Chongqing Jiaotong University Tang , Wu; Chongqing Jiaotong University Jie
A finite element model of the expansion Joints’ common damages of a novel comb-plate by using the finite element software ABAQUS is presented in this paper. The mechanical behavior of expansion Joints is analyzed to verify the weak parts of it. The research results provide a reference for the design of the comb-plate expansion Joints.
Volume: 13
Issue: 3
Page: 1097-1104
Publish at: 2015-09-01

Optical Fiber Bending Detection on Long Distance OPGW using OTDR

10.12928/telkomnika.v13i3.1726
M. F. M.; Universiti Teknikal Malaysia Melaka Salleh , Z.; Universiti Teknikal Malaysia Melaka Zakaria
In Malaysia, thousands of kilometers of Optical Ground Wire (OPGW) have been installed by a utility company. For long distance fiber cable, there is a possibility of optical fiber to bend with very small radius especially in joint closures which caused optical power to attenuate. This attenuation is known as ‘bend losses. Bend loss increases the total power attenuation of optical fiber. In addition, for long distance fiber cable, it is important to avoid any extra loss as the fiber itself attenuates 0.2 to 0.35 dB/km and splice loss about 0.1 dB each. Hence, in this study, the method of detecting bend loss as well as optical fiber bending is presented. The result of this study is expected to allow fiber industry players to determine the exact location and proper rectification can be done to solve bend loss problem.
Volume: 13
Issue: 3
Page: 889-893
Publish at: 2015-09-01
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