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Implementation of Smart Metering Systems: Challenges and Solutions
Hossein Shahinzadeh;
Ayla Hasanalizadeh-Khosroshahi
Indonesian Journal of Electrical Engineering and Computer Science Vol 12, No 7: July 2014
Publisher : Institute of Advanced Engineering and Science
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DOI: 10.11591/ijeecs.v12.i7.pp5104-5109
In recent decade, with advancements in telecommunications and information management systems technology and the increasing requirements of various sectors of the power industry for monitoring and controlling all of the network components (from production to consumption) power companies feel necessary to add intelligence to their grid as a scientific and practical solution to the utility industry. In most of the developed countries, electric power companies are planning to put priority on Smart Grid planning and for fulfilling this, implementation of Smart Metering Systems and energy management are the first and most basic step. Certainly, in the implementation of smart grids and smart metering infrastructure, power companies will face two major challenges, the cost of implementing these systems and the implementation complexity of the system. Therefore, this paper examines the challenges and strategies in order to better implementation of these systems in electrical grids.
Simplifications of the Rule base for the stabilization of Inverted Pendulum System
Tharwat O. S. Hanafy;
Mohamed K Metwally
Indonesian Journal of Electrical Engineering and Computer Science Vol 12, No 7: July 2014
Publisher : Institute of Advanced Engineering and Science
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DOI: 10.11591/ijeecs.v12.i7.pp5225-5234
Control of an inverted pendulum on a carriage which moves in a horizontal path, is one of the classic problems in the area of control. The basic aim of our work was to design appropriate controller to control the angle of the pendulum and the position of the cart in order to stabilize the inverted pendulum system. The main objective of this paper to keep the stabilization of the inverted pendulum based on the simplification of rule base. The proposed fuzzy control scheme successfully fulfills the control objectives and also has an excellent stabilizing ability to overcome the external impact acting on the pendulum system. The effectiveness of this controller is verified by experiments on a simple inverted pendulum with fixed cart length.
Controlled Synchronization by Limited Capacity Communication Channel
Ziqi Dong;
Yongchun Liu;
Da Lin
Indonesian Journal of Electrical Engineering and Computer Science Vol 12, No 7: July 2014
Publisher : Institute of Advanced Engineering and Science
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DOI: 10.11591/ijeecs.v12.i7.pp5362-5367
The work focuses on synchronization of time-delay chaos systems under information constraints. A theoretical analysis for time-delayed system by limited communication channel is provided. By using the Lyapunov-Krasovskii approach, a synchronization condition is first obtained. Encoder of binary coding is designed by this condition, and synchronization error of this systems tends to zero. Finally, analytical conditions are used for synchronization of time-delay chaos systems under information constraints, and simulations verify the validity of obtained result.
Variable Step Size Blind Equalization based on Sign Gradient Algorithm
Ying Xiao;
Fuliang Yin
Indonesian Journal of Electrical Engineering and Computer Science Vol 12, No 7: July 2014
Publisher : Institute of Advanced Engineering and Science
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DOI: 10.11591/ijeecs.v12.i7.pp5491-5498
This work proposes a variable step size sign gradient algorithm to solve the problem of blind equalization under impulse noise environment. This algorithm suppresses the impulse noise interference effectively because of the sign operation on the instantaneous gradient based on constant modulus algorithm (CMA) cost function. Meanwhile, the excess mean square error can be further reduced by use of a variable step size algorithm based on the iterative times and the reliability of the output signal. Simulation results show that, the variable step size blind equalization based on sign gradient algorithm has the fastest convergence rate and the lowest steady state residue error compared with the fractional low order CMA, the nonlinear transform CMA and stop-and-go CMA.
Detecting Rice Growth Using ALOS Multispectral and Synthetic Aperture Radar
Bambang Hendro Trisasongko;
Dyah Retno Panuju;
La Ode Syamsul Iman
Indonesian Journal of Electrical Engineering and Computer Science Vol 12, No 7: July 2014
Publisher : Institute of Advanced Engineering and Science
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DOI: 10.11591/ijeecs.v12.i7.pp5613-5620
Rice monitoring is a substantial to Asian countries, including Indonesia, since most inhabitants consume rice on a daily basis. As field survey requires substantial time and budget, one relies on remotely sensed data, especially taken through spaceborne platform. This research discusses multispectral and linearly polarized Synthetic Aperture Radar (SAR) from Advanced Land Observing Satellite and their applications to observe various rice growth information. It appears that both sensors provided useful rice growth data leading to the possibility on improving rice field information extraction. Classification scheme by means of Random Forest suggested that both data were fairly acceptable for timely monitoring.
Sensitivity Factor Based Optimal Location of SVC on Transmission Network
T. D. Sudhakar
Indonesian Journal of Electrical Engineering and Computer Science Vol 12, No 7: July 2014
Publisher : Institute of Advanced Engineering and Science
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DOI: 10.11591/ijeecs.v12.i7.pp4915-4923
In modern days power system are becoming highly unpredictable, so low voltages and blackout are becoming common scenario. The voltage limits are affected because the system is operated close to its stability limits. To improve the voltage profile new generating plants have to be developed, which are restricted due to economic an environmental limitations. To overcome these limitations and use the existing network to the maximum, FACTS devices are used. In this paper, SVC a FACTS device is used to improve the voltage profile of the network. To decide the location of the SVC, voltage sensitivity analysis method is used. FACTS devices are used to compensate both real and reactive power. To demonstrate this IEEE 14 bus and 39 bus are considered. The complete simulation is done using PSAT version 2.1.6 in Matlab 7.10.0 (R2010 a).
Multi-Area Automatic Generation Control Scheme including Renewable Energy Sources
Sandeep Bhongade;
Barjeev Tyagi;
H.O. Gupta
Indonesian Journal of Electrical Engineering and Computer Science Vol 12, No 7: July 2014
Publisher : Institute of Advanced Engineering and Science
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DOI: 10.11591/ijeecs.v12.i7.pp5052-5070
In this paper, a multi-area Automatic Generation Control (AGC) scheme with Renewable Energy Sources (RES) suitable in a restructured interconnected power system has been proposed. Photo-voltaic and wind turbine generating system has been integrated with the grid. The developed scheme has been investigated for frequency control with and without RES units. A PID controller has been used to control the real power output of fossils fuel generators. The parameters of PID controller has been tuned according to Genetic Algorithm (GA) based performance indices. The functioning of proposed scheme has been tested on a 39-bus New England system and on a 75-bus Indian power system network. Frequency regulation market scenario has been considered in both the systems. The results of proposed AGC scheme with and without RES units have been compared.
Digital Image Storage System Based on USB and NAND Flash
Yongjun Cui;
Wei Liu
Indonesian Journal of Electrical Engineering and Computer Science Vol 12, No 7: July 2014
Publisher : Institute of Advanced Engineering and Science
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DOI: 10.11591/ijeecs.v12.i7.pp5191-5196
Focusing on the storage of large number of digital image information, a system is designed which based on USB bus and NAND-type FLASH using alternating two-plane page program. The aim of this study is to short the writing-reading FLASH time and improve the transmission of data in order to enhance the efficiency of the system. In hardware implementation, the paper introduced the interface between every module especially the USB connection. In software, detailed analysis of the key technology about the alternating two-plane page program was shown. By commissioning, the speed of data stored in the FLASH is 30MB/s, achieving fast data storage and accurate feedback purposes, making sure that the data was reliable.
Algorithm of Multi Sensor Data Fusion based on BP Neural Network and Multi-scale Model Predictive Control
Guo Wang;
Dong Dai
Indonesian Journal of Electrical Engineering and Computer Science Vol 12, No 7: July 2014
Publisher : Institute of Advanced Engineering and Science
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DOI: 10.11591/ijeecs.v12.i7.pp5316-5323
Multi sensor data fusion is the data from multiple sensors and information from the relevant database are combined, which obtained judgment and description that can not achieve the goal, more accurate and complete by any single sensor. BP neural network is a kind of artificial neural network based on error back-propagation algorithm. It adopts adding hidden layer, to estimate the error directly leading layer of output layer by the error output. The paper presents Algorithm of multi sensor data fusion based on BP neural network and multi-scale model predictive control. The multi-scale model predictive control can not only obtain the previous information, and increase the flexibility in modeling and optimal phase.
QC LDPC Codes for MIMO and Cooperative Networks using Two Way Normalized Min-Sum Decoding
Waheed Ullah;
Yang Fengfan;
Abid Yahya
Indonesian Journal of Electrical Engineering and Computer Science Vol 12, No 7: July 2014
Publisher : Institute of Advanced Engineering and Science
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DOI: 10.11591/ijeecs.v12.i7.pp5448-5457
This paper is based on the magnitude overestimation correction of the variable message by using two normalized factors in each iteration for LDPC min-sum decoding algorithm. The variable message is modified with a normalized factor when there is a sign change and with another normalized factor when there is no sign change during any two consecutive iterations. This paper incorporates QC LDPC codes using this new decoding algorithm for flat fading multiple input multiple output (MIMO) channel and single relay cooperative communication networks for improving the bit error performance. MIMO flat fading channel is used with zero forcing (ZF) spatial decoding for noise suppression. The performance is greatly enhanced by using the new min-sum algorithm for medium and short length Cooperative communication network and MIMO LDPC codes.