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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
Journal Basic Information
Journal DOI :
The Korean Institute of IIIuminating and Electrical Installation Engineers
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Volume & Issues
Volume 26, Issue 12 - Dec 2012
Volume 26, Issue 11 - Nov 2012
Volume 26, Issue 10 - Oct 2012
Volume 26, Issue 9 - Sep 2012
Volume 26, Issue 8 - Aug 2012
Volume 26, Issue 7 - Jul 2012
Volume 26, Issue 6 - Jun 2012
Volume 26, Issue 5 - May 2012
Volume 26, Issue 4 - Apr 2012
Volume 26, Issue 3 - Mar 2012
Volume 26, Issue 2 - Feb 2012
Volume 26, Issue 1 - Jan 2012
Selecting the target year
Effect of the Epoxy Mold on the Thermal Dissipation Behavior of LED Package
Bang, Young-Tae ; Moon, Cheol-Hee ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 26, issue 2, 2012, Pages 1~7
DOI : 10.5207/JIEIE.2012.26.2.001
LED package with 4[mm]-height mold was manufactured and the surface temperature was measured directly using both thermocouple and thermal infrared (IR) camera. FVM simulation was conducted to estimate the surface temperature of the same LED package under the same condition, by which the accuracy of the simulation was secured. Then, the effects of the height and thermal conductivity of the mold on the junction temperature of the LED package were investigated by FVM simulation. The results showed that the junction temperature decreased by 10[
] when the mold height was 3~5[mm], but the thermal conductivity of the mold didn't affect the junction temperature significantly.
A Study on the Effect of Envelope Factors on Cooling, Heating and Lighting Energy Consumption in Office Building
Son, Chang-Hee ; Yang, In-Ho ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 26, issue 2, 2012, Pages 8~17
DOI : 10.5207/JIEIE.2012.26.2.008
The objective of this study is to perform an analysis of the heat(heating and cooling) and lighting energy consumption according to the window area ratio and the application of horizontal louver, which is external shading device installed for the purpose of energy savings in office buildings. For this, a building was chosen as a typical example, and the heat and lighting energy consumption was calculated by using the daylight and building energy analysis simulation. The results showed that the total energy consumption, when the lighting control was applied, was reduced by an average of 11.49[%] compared to when there was no lighting control. The smaller the glazing ratio is, the less the total energy consumption is. Also, the application of the horizontal louver increases the total energy consumption under the same condition of glazing ratio.
Contributions of Large-Industrial Enterprise to Demand-Side Management and Economic Analysis on Diffusion of Energy Efficiency Measures
Kim, Seong-Cheol ; Park, Jong-Jin ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 26, issue 2, 2012, Pages 18~26
DOI : 10.5207/JIEIE.2012.26.2.018
Though electricity consumption amount in industry has been increased gradually, corresponding power supply show symptoms of marginal point. Importance of demand-side management from large-industries has also been raised. This paper deals with induction motor, which is one of representative examples of heavy electricity consumption utilities, to analyze potential technical capability, economic feasibility from consumers' viewpoint and demand-side management feasibility from nation-wide perspective. Nation-wide economic feasibility analysis was done through California test, which has been used as demand-side management evaluation model. This paper also describes limitation of existing high efficiency induction motor in terms of contribution to demand-side management and utilizes premium motor to calculate demand-side management contribution level and economic feasibility evaluation. Likewise, this paper emphasizes the efficiency improvement of induction motor and analyzes how much premium motor related technologies can contribute to demand-side management.
The Heat Transfer Analysis of 1.2[kW] BLDC Motor on the Condition of the External Flow
Hwang, Ha-Young ; Chung, Tai-Uk ; Lee, Dong-Yeon ; Hwang, Pyung ; Shim, Jae-Sool ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 26, issue 2, 2012, Pages 27~33
DOI : 10.5207/JIEIE.2012.26.2.027
In this paper, we researched the heat transfer analysis of 1.2[kW] BLDC motor on the condition of the external flow. The BLDC motor is fallen under influence of some heat generated by rotationg motor speed and it changes the life and confidence of motor. The heat makes to reduce the life of insulation and the magnetization. So motor can't make own performance. Therefore we calculated the losses about number of revolutions of motor. And then, we analyzed the heat transfer of BLDC motor by using the results when a fan attached to motor makes the external flow or not. The results showed that the temperature of motor increased constant values irrespective of external air temperature. The temperature of motor decreased very lower values than prior researches when the fan makes the external flow. In this method we can analyze the performance, losses and heat transfer of motor applied in the many industries.
A System Modeling and Controller Design Method Using Discrete Fourier Transform
Shim, Kwan-Shik ; Ahn, Hyun-Jin ; Nam, Hae-Kon ; Lim, Yeong-Chul ; Kim, Eui-Sun ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 26, issue 2, 2012, Pages 34~43
DOI : 10.5207/JIEIE.2012.26.2.034
This paper describes system modeling and controller design method in the measured signal by discrete Fourier transform. Transfer function of the second order system is estimated by the dominant parameter which is computed in the magnitude and the phase of Fourier spectrum of the measured signal. In addition, the controller was designed by the estimated transfer function, and the results were compared. The proposed estimation method of transfer function contains only a very simple mathematical process. Therefore, it is effective to design the controller in the measured signal when the output of the system contains the characteristics of complex exponential functions case. The proposed method was applied on Op-Amp system to verify the efficiency and the reliability. The results show that the proposed algorithms are highly applicable to the system modeling and controller design in the measured data.
Demodulation of FBG and Acoustic Sensors Embedded in a Fiber-Optic Sagnac Loop
Kim, Hyun-Jin ; Lee, June-Ho ; Song, Min-Ho ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 26, issue 2, 2012, Pages 44~50
DOI : 10.5207/JIEIE.2012.26.2.044
When the fiber Bragg gratings are embedded in a fiber-optic Sagnac loop for measuring temperature or strain, it is difficult to separate the Bragg wavelengths. The transmitted light is mixed with the reflected Bragg wavelengths in the photo-detector, working as noises. To suppress the noises, we placed the FBG sensors and a fiber-optic attenuator at asymmetric positions in the loop. With the arrangement the reflected light became much bigger than the transmitted light, enabling the separation of the reflected Bragg wavelengths with almost the same signal-to-noise ratio of the FBG sensors outside the loop.
An Improved Method for Fault Location based on Traveling Wave and Wavelet Transform in Overhead Transmission Lines
Kim, Sung-Duck ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 26, issue 2, 2012, Pages 51~60
DOI : 10.5207/JIEIE.2012.26.2.051
An improved method for detecting fault distance in overhead transmission lines is described in this paper. Based on single-ended measurement, propagation theory of traveling waves together with the wavelet transform technique is used. In estimating fault location, a simple, but fundamental method using the time difference between the two consecutive peaks of transient signals is considered; however, a new method to enhance measurement sensitivity and its accuracy is sought. The algorithm is developed based on the lattice diagram for traveling waves. Representing both the ground mode and alpha mode of traveling waves, in a lattice diagram, several relationships to enhance recognition rate or estimation accuracy for fault location can be found. For various cases with fault types, fault locations, and fault inception angles, fault resistances are examined using the proposed algorithm on a typical transmission line configuration. As a result, it is shown that the proposed system can be used effectively to detect fault distance.
Development of Optimal Operation Algorithm about CES Power Plant
Kim, Yong-Ha ; Park, Hwa-Yong ; Kim, Eui-Gyeong ; Woo, Sung-Min ; Lee, Won-Ku ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 26, issue 2, 2012, Pages 61~70
DOI : 10.5207/JIEIE.2012.26.2.061
Recently due to the increasing of the importance on the green energy is getting higher by implementing EERS(Energy Efficiency Resource Standards) and NA(Negotiated Agreement) such as lacks of natural resources and The United Nations Framework Convention on Climate Change. And the most practical solution is CHP(Combined Heat and Power) which performs the best energy efficiency. This paper developed optimal operation mechanism of CES(Community Energy System) for enhancement of energy efficiency using CHP(Combined Heat and Power), PLB(Peak Load Boiler) and ACC(ACCumulator) capacities. This method optimally operated these capacities calculated the maximum profits by Dynamic Programing. Through the case studies, it is verified that the proposed algorithm of can evaluate availability.
Study on Cogging Torque Reduction for Small Wind Turbine AFPM Generator of Double Stator Structure
Jung, Tae-Uk ; Bae, Byung-Duk ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 26, issue 2, 2012, Pages 71~77
DOI : 10.5207/JIEIE.2012.26.2.071
The cogging torque is important to the cut-in wind speed. And, it causes the acoustic noise and the vibration on the machine. This paper presents a 3D FEA(Finite Element Analysis) to evaluate the effect of magnet skew and stator displacement on cogging torque reduction, for double core AFPM(Axial Flux Permanent Magnet) generator. As a result, the magnet skew and the stator side displacement are proved excellent techniques to reduce the cogging torque.
A Method for Enhancing Data Transmission Performance in the Power-Line Communication Channel with Low-Voltage Surge Protective Devices
Choi, Jong-Min ; Jeon, Tae-Hyun ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 26, issue 2, 2012, Pages 78~85
DOI : 10.5207/JIEIE.2012.26.2.078
Low-Voltage power lines should equip surge protection devices which protect electronic equipments and human lives against lightning and abnormal voltages. Data transmission capacity of the power line is determined by frequency characteristics of the surge protective devices. To analyze the effects of surge protective devices on the data transmission performance, various combinations of installation methods are tested which include ZnO varistor elements that is compatible with class I, class II and class III. The result claims that ZnO varistor for class III is found to be one of the main factors that deteriorates the transmission performance. To overcome this problem a serial connection methed between Gap type SPD and ZnO varistor is proposed. With the proposed scheme, laboratory experimental results show that the data transmission performance can be improved up to 91.9[%] with proper SPD combination.
Assessment Method and Calculations for Protective Conductor of TN-S System and IEC 60364 Application
Kim, Gi-Hyun ; Lee, Ju-Chul ; Choi, Young-Kyu ; Kim, Han-Su ; Lee, Young-Chul ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 26, issue 2, 2012, Pages 86~91
DOI : 10.5207/JIEIE.2012.26.2.086
A conductor has been produced according to IEC standard and low voltage electrical facility has been installed according to IEC 60364. So we must comply with international standard for design, construction and inspection. But because of many related and varied standards, it is difficult to apply to design and inspect for electrical equipment. We researched the necessity of design guide which is detailed and systematization from survey. For detailed design guide, we suggest calculation method of protective conductor cross-sectional area at TN-S system according to BS 7671 regulation and KS C IEC 60364 standard.
Characteristics Analysis of Reactor Considering Magnetization Saturation
Kim, Jong-Gyeum ; Park, Young-Jeen ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 26, issue 2, 2012, Pages 92~98
DOI : 10.5207/JIEIE.2012.26.2.092
As the increasing of non-linear load, filter is coming to be high gradually in order to reduce the harmonic which occurs from the power conversion. The maintenance of passive filter is easier than active filter and it has been widely used in the industrial site. This passive filter is connected with condenser and reactor by series and parallel and it is installed at the front of nonlinear load. The breakdown of passive filter occurs frequently at the reactor side rather than capacitor. So the breakdown cause close examination is necessary. In this paper, we analyzed that the electric stress of reactor which is considered magnetization saturation at the passive filter. We confirm that the reduction of harmonics and the electric stress of reactor is influenced by the linear and non-linear element of reactor.
An Analysis of the Frequency-Dependent Resultant Ground Impedance of Vertical Ground Electrodes Installed in Parallel
Lee, Bok-Hee ; Cho, Sung-Chul ; Seong, Chang-Hoon ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 26, issue 2, 2012, Pages 99~105
DOI : 10.5207/JIEIE.2012.26.2.099
This paper deals with the experimental results of the frequency-dependent resultant ground impedance of vertical ground electrodes installed with a regular n-polygon. In order to propose an effective method of installing the vertically-driven multiple ground electrodes used to obtain the low ground impedance, the resultant ground impedance of ground electrodes installed with a regular n-polygon were measured as functions of the number of ground electrodes and the frequency of test currents and the results were discussed based on the potential interferences among ground electrodes. As a consequence, the effect of potential interference on the resultant ground impedance of vertical ground electrodes is frequency-dependent and it is significant in the low frequency of a few hundreds [Hz]. The resultant ground impedance of multiple vertical ground electrodes is not decreased in linearly proportion to the number of ground electrodes due to the overlapped potential interferences. Also the distributed-parameter circuit model considering the potential interference, the frequency-dependent relative permittivity and resistivity of soil was proposed. The simulated results of the frequency-dependent resultant ground impedance of multiple vertical ground electrodes are in good agreement with the measured data.
Analysis of Effect of Designated New Technology of Electric Power on the Electrical Construction Industries
Hwang, Min-Soo ; Jeon, Tae-Hyun ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 26, issue 2, 2012, Pages 106~113
DOI : 10.5207/JIEIE.2012.26.2.106
Recently laws have been enacted to build and promote the use of smart grid. There are also increasing demands for the compliance with international trade agreements and the related international standards. Due to these rapid changes in electric power industry and the market expansion, importances of new technologies and processes have been being increased. To reflect these international trends, the government have carried out the designation of new technology for electric power industry to promote domestic industries and national competitiveness by inspiring technology developments in individual or private industry sectors. In this paper analysis of the current status of the designation of the new technology of electric power has been presented including its problem and effect on the related industries. The analysis is expected to be utilized to enhance sound development and to vitalize the electrical new technology regulation.