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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
Editor in Chief :
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
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Thermal Modeling of Quasi-Adiabatic Room and Lighting Fixture for Estimation of Internal Heat Gain by Luminaires
Park, He-Rie ; Choi, Eun-Hyeok ; Lee, Kwang-Sik ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 26, issue 5, 2012, Pages 1~12
DOI : 10.5207/JIEIE.2012.26.5.001
In order to reduce energy consumption and greenhouse gas emission in building domain, thermal insulation of building is being enhanced. In a well insulated and tightened environment, internal heat gain caused by solar radiation, luminaires, electronic appliances and metabolism can be more important to thermal condition of building. This paper presents mathematical/physical models of quasi-adiabtic room and lighting fixtures using heat balance equation and thermal-electric analogy to quantify and modelize the heat gain due to luminaires. Experimental results are used to identify thermal parameters of theoretical models. And simulation results of models using Matlab/Simulink are conducted to verify the models and to investigate the thermal effect of lighting fixtures into quasi-adiabatic room.
A Study on Pattern Shape to Improve the Light Transmittance of Optical Device
Joo, Won-Don ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 26, issue 5, 2012, Pages 13~20
DOI : 10.5207/JIEIE.2012.26.5.013
The light transmittance of optical device is one of the important conditions to improve the product performance and it has researched through the various methods. One of these methods to improve the optical transmittance is to use a pattern on optical surface. The advantages of this method are to simplify the manufacturing process and to easy mass production. If a surface of glass has with the proper patterns, we can expect a great effect on optical transmittance. The purpose of this research is to derive a pattern to get high transmittance from a theoretical approach and to analyze the transmittance through the simulation. And then, we made a sample with a pattern and compared with the results from simulation and experiment.
A Novel MPPT Control of PV MIC System Considering the Shaded Effect
Choi, Jung-Sik ; Chung, Dong-Hwa ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 26, issue 5, 2012, Pages 21~33
DOI : 10.5207/JIEIE.2012.26.5.021
This paper presents the new maximum power point tracking(MPPT) control of the photovoltaic(PV) module integrated converter(MIC) system considering the shadow influence. The output characteristics of the solar cell is a nonlinear and affected by a temperature, the solar radiation and influence of a shadow. Particularly, MIC system is very sensitive to the shadow influence because the capacity is very small. In order to increase an output and efficiency of the solar power generation, the maximum power point(MPP) obeying control are necessary. Conventional perturbation and observation(PO) and Incremental conductance(IC) are the method finding MPP by the continued self-excitation vibration. The MPPT control is unable to be performed by rapid output change affected by the shadow. To solve this problem, the new control algorithm of the multi-level in which the step value changes by output change is presented. In case there are the solar radiation, a temperature and shadow influence, the presented algorithm treats and compares the conventional control algorithm and output error. In addition, the validity of the algorithm is proved. through the output error response characteristics.
Faulted Section Identification Method in Case of Single Line to Ground Fault
Kim, Byeong-Goo ; Kim, Young-Kook ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 26, issue 5, 2012, Pages 34~39
DOI : 10.5207/JIEIE.2012.26.5.034
The DAS(Distribution Atomization System) determines a faulted section by using a FI(Fault Indicator) when the fault is occurred on the distribution networks. Sometimes FI is malfunction when the ground fault is occurred on a the distribution networks. As a result difficulties to make decision of faulted section. The cause of the FI malfunction is that the determination using the limited information of the installed area. In this study, a method is proposed to determine faulted section using the amount of the fault current instead of using the FI. This method is determinated faulted section using the fuzzy inference for the collected information from the all switches. The usefulness of the proposed algorithm is verified through the simulation test using PSCAD/EMTDC.
Control Algorithm for PMSM using Rectangular Two Hall Sensors Compensated by Sensorless Control Method
Lee, Jung-Hyo ; Lee, Taek-Ki ; Kim, Young-Ryul ; Won, Chung-Yuen ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 26, issue 5, 2012, Pages 40~47
DOI : 10.5207/JIEIE.2012.26.5.040
The PMSM position sensor using two rectangular hall sensors can restrictively acquire the 90[
] position information of rotor according to electrical angle. Thus, the control method using this position sensor cannot react properly to a rapid load torque change. On the other hand, even though a sensorless method has the advantage of acquiring instantaneous rotor position information, the accuracy of position sensor can be determined by the gain value of estimator. This paper suggests a robust speed control method on torque fluctuation condition, which combines low cost two rectangular hall sensors and sensorless control method.
A Study on the Harmonics and Flicker Measurements and Analysis of the Grid Connected Photovoltaic Power System
Kim, Kyung-Chul ; Kim, Yong-Kwan ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 26, issue 5, 2012, Pages 48~57
DOI : 10.5207/JIEIE.2012.26.5.048
This paper analyzes the characteristic of gird connected photovoltaic power generation system which is available to connect the utility. Renewable energy photovoltaic power system has been linked to the system to analyze the impact of photovoltaic system. It is measured that power data for the Grid connected photovoltaic power plant with instantaneous measuring and 3-sec measuring for 7 days. Harmonic field measurements have shown that the harmonic contents of a waveform varies with time. A cumulative probability approach is the most commonly used method to solve time varying harmonics. So, it is used 50[%] cumulative probability approach. This paper provides an in depth analysis on power quality field measurement of the Grid connected photovoltaic power plant.
Personnel Safety Related to Disconnection of PEN Conductor in TN-C-S System
Kim, Jung-Cheol ; Lee, Kyu-Sun ; Lee, Bok-Hee ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 26, issue 5, 2012, Pages 58~64
DOI : 10.5207/JIEIE.2012.26.5.058
In electric power supply systems, an earthing system determines the electric potential of the conductors related to that of the Earth's surface. The choice of earthing system has implications for the safety of the power supply systems. There are considerably different regulations for earthing (grounding) systems in each country. A protective earth(PE) conductor ensures that all exposed conductive surfaces are at the same electric potential as the earth surface. This paper deals with that when PEN conductor of TN-C-S system is disconnected, dangerous touch voltage causes personnel body to be harmed and human being's property to be damaged seriously. For this reason, this paper explains how serious problems can occur when the fault current flows. As a consequence, we can understand how we can design earthing system properly to ensure the personnel safety against earth faults. The result shows the way that TN-C-S system can be applied safely in Korea.
A Study on the Apply to Soil Thermal Resistivity of Low-Voltage Underground Power Cables
Lee, Joo-Chul ; Kim, Ki-Hyun ; Lee, Young-Chul ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 26, issue 5, 2012, Pages 65~70
DOI : 10.5207/JIEIE.2012.26.5.065
The current-carrying capacities in IEC standards for underground refers to a soil thermal resistivity of 2.5[
] where no measured data are available. But this value is considered too conservative and may not justifiable economically as to need precaution in using the value. In this paper, the standard practices on the application of soil thermal resistivity of some countries(UK, USA etc) are surveyed and proposed a reasonable representative value 1.0[
] of soil thermal resistivity considering the domestic soil thermal properties with regard to the application of IEC standard.
A Design of a High Performance UPS with Capacitor Current Feedback for Nonlinear Loads
Lee, Woo-Cheol ; Lee, Taeck-Kie ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 26, issue 5, 2012, Pages 71~78
DOI : 10.5207/JIEIE.2012.26.5.071
This paper presents a digital control solution to process capacitor current feedback of high performance single-phase UPS for non-linear loads. In all UPS the goal is to maintain the desired output voltage waveform and RMS value over all unknown load conditions and transient response. The proposed UPS uses instantaneous load voltage and filter capacitor current feedback, which is based on the double regulation loop such as the outer voltage control loop and inner current control loop. The proposed DSP-based digital-controlled PWM inverter system has fast dynamic response and low total harmonic distortion (THD) for nonlinear load. The control system was implemented on a 32bit Floating-point DSP controller TMS320C32 and tested on a 5[KVA] IGBT based inverter switching at 11[Khz]. The validity of the proposed scheme is investigated through simulation and experimental results.
Reliability on the Unintended Trips of Residual Current Operated Circuit Breakers due to Surge Currents
Lee, Bok-Hee ; Kim, Sang-Hyun ; Kim, Yoo-Ha ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 26, issue 5, 2012, Pages 79~84
DOI : 10.5207/JIEIE.2012.26.5.079
As the huge economical loss and function paralysis of information technology-based systems can be caused by the misoperation of residual current devices(RCDs) due to surge voltages and currents, RCDs shall not operate by surge currents. In this paper, in order to evaluate the reliability of residual current operated circuit-breakers with integral overcurrent protection for household and similar uses((RCBOs) stressed by surges, the unintended trip characteristics of RCBOs under surge currents were experimentally investigated using the combination wave generator. Seven different types of single-phase RCBOs being present on the domestic market were investigated according to KS C IEC 61009-1 standard. As a result, all kinds of specimens were satisfied the requirements for 0.5 [
]/100[kHz] ring wave impulse currents. Most of specimens stressed by the 8/20[
] impulse current tripped at least one or more, and some of them were broken down during consecutive tests. It was found that only one type of specimens meets the L-N mode immunity to the combination wave of 1.2/50[
] impulse voltage and 8/20[
] impulse current.
Characteristics of Ozone Generation by Diameter and Polarity Variation of Corona Wire Electrode
Jung, Jae-Seung ; Kim, Jin-Gyu ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 26, issue 5, 2012, Pages 85~90
DOI : 10.5207/JIEIE.2012.26.5.085
In this paper, it was investigated experimentally that diameter and polarity variation of corona wire electrode affected to ozone generation of the ozone generator using a wire-to-plate type electrode. The change in the diameter(D) of the corona wire electrode has a great effect upon ozone generation, higher influence appears in the positive corona discharge than the negative corona discharge. In the case of D=0.50[mm], maximum ozone generation and power efficiency could be obtained. However, in the case of smaller D than this, the ozone generation and efficiency decreases slowly and in the case of larger D, the ozone generation decreases rapidly. It means performance decline as an ozone generator. Therefore, ozone generation and power efficiency would increase through simple optimization of the corona electrode specification.
Corona Discharge Characteristics of Transformer Bushing Model with Contaminnations in Air
Pang, Man-Sik ; Kim, Woo-Jin ; Kim, Young-Seok ; Kim, Sang-Hyun ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 26, issue 5, 2012, Pages 91~96
DOI : 10.5207/JIEIE.2012.26.5.091
The surface of bushing is contaminated with rain, dust, salt and others. A bushing with contaminations in air is serious problem in insulation. Therefore, it is important to understand the inspection and diagnoses of the safety. The ultra-violet rays(UV) camera has attracted interest from the view point of easy judgement. In this paper, we will report on the corona discharge characteristics of surface flashover model with contaminations in air. Also, UV images of discharge and corona pulse count in air are analyzed using prototype UV camera of Korea and a UV sensor with an optic lens. These results are studied at both AC and DC voltage under a non-uniform field.