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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 28, Issue 12 - Dec 2014
Volume 28, Issue 11 - Nov 2014
Volume 28, Issue 10 - Oct 2014
Volume 28, Issue 9 - Sep 2014
Volume 28, Issue 8 - Aug 2014
Volume 28, Issue 7 - Jul 2014
Volume 28, Issue 6 - Jun 2014
Volume 28, Issue 5 - May 2014
Volume 28, Issue 4 - Apr 2014
Volume 28, Issue 3 - Mar 2014
Volume 28, Issue 2 - Feb 2014
Volume 28, Issue 1 - Jan 2014
Selecting the target year
Lightings Arrangement Method of the Small Gymnasiums
Kim, Tae-Hoon ; Choi, Hong-Kyoo ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 28, issue 6, 2014, Pages 1~6
DOI : 10.5207/JIEIE.2014.28.6.001
In KSC 3706, the gymnasiums are classified according to their size(small, medium, large) and there are two kinds of illumination arrangement method for them such as Side and Distributed. The characteristic of the distributed illumination arrangement method is excellent in uniformity and the characteristic of the side illumination arrangement method is excellent in glare. but illuminations were so diverse that features are not always applicable. So in this paper, in this paper, We analyzed characteristic of distributed illumination arrangement method and side illumination arrangement method using nine illumination.
A Development of Fast Speed Monte-Carlo Ray Tracing Method and Study of the Characteristics of an Absolute Reflectometer
Kim, Han-Pil ; Byun, Seok-Joo ; Jeon, Min Yong ; Park, Jong-Sik ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 28, issue 6, 2014, Pages 7~14
DOI : 10.5207/JIEIE.2014.28.6.007
We proposed a new algorithm to improve the calculation speed of forward ray tracing method which was quite a problem in conventional Monte Carlo algorithm. To verify the accuracy and the effect of improving calculation speed, we directly compared integrating sphere characteristics with conventional ray tracing algorithm under the same condition which was referred in a reference paper. By applying new algorithm to an absolute reflectometer, we calculated the degree of errors which were caused by baffle and port characteristics to find optimal system design condition.
Sterilization Analysis of Harmful Microbes in LED Plant Factory using UV LED
Jang, Jun-Chul ; Her, In-Sung ; Lee, Se-Il ; Yu, Young-Moon ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 28, issue 6, 2014, Pages 15~20
DOI : 10.5207/JIEIE.2014.28.6.015
Recently, LED (Light Emitting Diode) application research is studying by using a specific wavelength. LED plant factory produced a lot of green plants in a closed spaces, so it should be taken to guard against harmful microbes. Until today, a lot of studies for green plant production in plant factory is proceed but there were no study on harmful microbes in plant factory. Thus, the analysis on sterilization for harmful microbes in plant factory were experimented using UV (Ultra Violet) LED with 282nm of wavelength. As a results on sterilization of three harmful microbes, 50% of sterilization efficiency was achieved after 2.5 hours, 97% was achieved after 12 hours of UV LED irradiation, respectively.
A Study on the Power Generation Performance Evaluation of the Alternator for the Vehicle
Ahn, Hyun-Jin ; Shim, Kwan-Shik ; Lim, Young-Cheol ; Choi, Jun-Ho ; Park, Sung-Jun ; Kim, Eui-Sun ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 28, issue 6, 2014, Pages 21~29
DOI : 10.5207/JIEIE.2014.28.6.021
In this paper examine the characteristics of the generator supplying the most significant electrical energy in some parts required to drive the vehicle, and it is focused on to fabricate a performance evaluation unit for developing alternator with better performance. Through performance tests in accordance with the electrical load of alternators that is made in Valeo Corp. and Denso Corp., which are currently applied by H Corp., the fabricated performance evaluation unit has measured the power generation amount of the electrical energy supplied from the alternator, and it was analyzed. On the basis of this result, and to understand the flow of electrical energy of the vehicle, furthermore, it is intended to verify the usefulness of the performance evaluation unit which is designed in this paper. In this paper, based on the mechanism of the proposed performance evaluation unit, it will try to learn the convergence technology that can be applied to the design of the performance evaluation unit of other components of the vehicle.
A Study on the Gain Tuning of Fuzzy Logic Controller Superior to PI Controller in DC Motor Speed Control
Kim, Young-Real ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 28, issue 6, 2014, Pages 30~39
DOI : 10.5207/JIEIE.2014.28.6.030
Through a lot of papers, it has been concluded that fuzzy logic controller is superior to PI controller in motor speed control. Although fuzzy logic controller is superior to PI controller in motor speed control, the gain tuning of fuzzy logic controller is more complicated than that of PI controller. In this paper, using mathematical analysis of the PI and fuzzy controller, the design method of the fuzzy controller that has the same characteristics with the PI controller is proposed. After that, we can design the fuzzy controller that has superior performance than PI controller by changing the envelope of input of fuzzy controller to nonlinear, because the fuzzy controller has more degree of freedom to select the control gain than PI controller. The advantage of fuzzy logic controller is shown through mathematical analysis, and the simulation result using Matlab simulink has been proposed to show the effectiveness of these analysis.
Performence Characteristics and Analysis Effect of Maximum Power Saving Device in Metal Parts Heat Treatment Company
Chang, Hong-Soon ; Han, Young-Sub ; Hwang, Ik-Hwan ; Seo, Sang-Hyun ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 28, issue 6, 2014, Pages 40~44
DOI : 10.5207/JIEIE.2014.28.6.040
In this paper, maximum power is the lowering device using the facility's energy use and peak load electricity through analyzing attitude should like to make it reduce its power base rate. Simulator to manage the demand for power, a maximum electric power base power from electronic watt-hour meters by a device's signal, predictive power, the current power by computing the goal of power for less than Maximum peak power and peak shift, so that you can manage, and peak York, which role you want a cut Metal heat treatment result which analyzes the data, demand for electricity company over the years of analyzing the characteristics of each load, and effects and Reducing power consumption device every month identified seven Sequence control to the load system and successful power control is about showing that the defined goals.
Analysis for Voltage Fluctuation and Power Flow at the Grid-Connected Time of Squirrel-Cage Induction Generator
Kim, Jong-Gyeum ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 28, issue 6, 2014, Pages 45~51
DOI : 10.5207/JIEIE.2014.28.6.045
Synchronous generators and induction generators are mainly used in hydroelectric power generation. Synchronous generator is mainly applied to large hydroelectric plants but induction generator is applied to the small hydro power plants. Stability of induction generator is slightly less than the synchronous generator. However, induction generator has many advantages rather than a synchronous generator in terms of price and maintenance. So Induction generator is used primarily in small hydroelectric power station less than 1,000kW recently. Squirrel cage induction generator generates a high inrush current at the grid-connection. This high inrush current causes a voltage drop on the grid. In order to reduce the voltage drop and to analyze the power flow, the analysis for operating characteristics of the induction generator should be reviewed in advance. In this study, we analyzed the voltage drop and power flow analysis when a 1500kW induction generator is connected to the grid. The voltage drop is slightly higher than the acceptable range of distributed power supply voltage and the power flow of the generator is performed well.
Effect of Decomposition Product on the Insulation Characteristics of Mineral Oil as Insulation Medium of Distribution Transformer
Lim, Dong-Young ; Park, Sung-Gyn ; Park, Cheol-Ho ; Kim, Ki-Chai ; Lee, Kwang-Sik ; Choi, Eun-Hyeok ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 28, issue 6, 2014, Pages 52~59
DOI : 10.5207/JIEIE.2014.28.6.052
This paper deals with the effect of decomposition products which occur in breakdown of mineral oil, on the insulation characteristics of its oil. Breakdown tests in the oil were conducted by the proposed experimental methods under a quasi-uniform field and AC HV (60Hz). The breakdown voltage in the oil shows characteristics of dispersion from successive breakdowns and, it is found that there are three patterns of the decomposition products behavior at the process of breakdown progress in the oil. Finally, the breakdown voltage dispersion in the oil can be described in detail based on the behavior patterns of the decomposition products and its diffusion time.
A Study on the Sequence Impedance Modeling of Underground Transmission Systems
Hwang, Young-Rok ; Kim, Kyung-Chul ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 28, issue 6, 2014, Pages 60~67
DOI : 10.5207/JIEIE.2014.28.6.060
Power system fault analysis is commonly based on well-known symmetrical component method, which describes power system elements by positive, negative and zero sequence impedance. The majority of fault in transmission lines is unbalanced fault, such as line-to-ground faults, so that both positive and zero sequence impedance is required for fault analysis. When unbalanced fault occurs, zero sequence current flows through earth and ground wires in overhead transmission systems and through cable sheaths and earth in underground transmission systems. Since zero sequence current distribution between cable sheath and earth is dependent on both sheath bondings and grounding configurations, care must be taken to calculate zero sequence impedance of underground cable transmission lines. In this paper, EMTP-based sequence impedance calculation method was described and applied to 345kV cable transmission systems. Calculation results showed that detailed circuit analysis is desirable to avoid possible errors of sequence impedance calculation resulted from various configuration of cable sheath bonding and grounding in underground cable transmission systems.
Frequency-dependent electrical parameters of soils as a function of the moisture content
Lee, Bok-Hee ; Kim, Ki-Bok ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 28, issue 6, 2014, Pages 68~74
DOI : 10.5207/JIEIE.2014.28.6.068
The electrical parameters of soils are highly dependent on the various factors such as types of soil, chemical compositions, moisture content, temperature, frequency, and so on. The analysis of soil parameters is of fundamental importance in design of grounding systems. In this paper, we present the experimental results of frequency-dependent impedance, resistivity, permittivity of soils as functions of types of soil and moisture content. The impedance and resistivity of soils are decreased as the moisture content and the frequency increase. In particular, the variation of the soil resistivity with the frequency is pronounced in the conditions of high resistivity and low moisture content. On the contrary, the permittivity of soils are sharply decreased with increasing the frequency below 10kHz and the frequency-dependent permittivity of soils are highly changed in the conditions of high moisture and low resistivity.
The research to improve Thrust and Levitation Force characteristic of Linear Synchronous Motor for High-speed Maglev train
Hong, Hyun-Seok ; Oh, Se-Young ; Han, Jung-Ho ; Lee, Ju ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 28, issue 6, 2014, Pages 75~84
DOI : 10.5207/JIEIE.2014.28.6.075
A linear synchronous motor (Linear Synchronous Motor, under LSM) is suitable for Maglev train. This is 500km/h or more for running high-speed propulsion system of high-efficiency, high-output characteristics. Also, as high-speed running, it is needed solution to reduce output ripple component cause bad riding like noise and vibration. So this paper was designed 500km/h-class Maglev train and analyzed characteristics of the LSM base model using finite element analysis method. Further, improved model is designed to improve characteristics of thrust and levitation force by enforcing design parameters analysis and sensitivity analysis. And it was applied skew on field in order to reduce the ripple component still remaining. Skew interpretation of the two-dimensional is proposed and this is verified by carrying out three-dimensional finite element analysis comparing two values. It proved to be valid of skew of the two-dimensional analysis.
A Study on Comparative Analysis of Power Consumption Characteristics and the revulsion of investment on the application of a BESS in Subway Substation
Jung, Hyun-Ki ; Kim, Se-Dong ; Kim, Jae-Chul ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 28, issue 6, 2014, Pages 85~90
DOI : 10.5207/JIEIE.2014.28.6.085
This paper shows a reasonable demand power, that was made by the systematic and statistical way considering actual conditions, such as investigated transformer capacity and peak power for the last 6 years of subway substation customer as to AMR. In this dissertation, it is necessary to analyze the key features and general trend from the investigated data. It made an analysis of the feature parameters, such as average, standard deviation, median, maximum, minimum and thus it was carried by the linear and nonlinear regression analysis. And we studied on the application of a BESS. Analysis showed that the revulsion of capital is about 3 years and 4 months.
Influences of the Length of Connecting Leads on the Energy Coordination in Coordinated SPD Systems
Lee, Bok-Hee ; Shin, Hee-Kyung ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 28, issue 6, 2014, Pages 91~98
DOI : 10.5207/JIEIE.2014.28.6.091
For the purpose of designing and applying the optimum surge protection scheme, multi-stage coordinated surge protective device(SPD) system is suitable to successfully fulfill its tasks; first, to divert a large amount of the transient energy, second, to clamp the overvoltage to the level below the withstand impulse voltage of the equipment to be protected. The length of SPD connecting leads shall be as short as possible. Long connecting leads will degrade the protection effect of SPDs. In this paper, the influences of the length of connecting leads on the energy sharing in a coordinated SPD system were investigated experimentally, and the simulation of determining the energy sharing and protection voltage level of each SPD depending on the length of connecting leads was carried out by using P-spice program. It was confirmed that the protection voltage level and energy sharing in coordinated SPD systems are strongly influenced by the length of connecting leads.
A Study on the Harmonics Effect of Ratio Differential Relay for Transformer Protection
Kim, Kyung-Chul ; Hwang, Young-Rok ; Kho, Hun ; Jung, Dong-Won ; Chung, Hae-Sung ; Lee, Dong-Wook ; Jeong, Chae-Ho ; Lee, Jae-Yoon ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 28, issue 6, 2014, Pages 99~105
DOI : 10.5207/JIEIE.2014.28.6.099
Power transformers are applied throughout the power system to connect systems of different voltage to one another. Since a ratio differential relay offers high sensitivity in detection of internal faults in power transformers, it is widely used in the main protection system. The use of nonlinear devices such as rectifiers and other devices utilizing solid state switching have been increased in industry during recent years. For nonlinear loads, the load current is not proportional to the instantaneous voltage. This situation creates harmonic distortion on the system. The harmonic could differential relay misoperation if not recognized. This paper aims at analyzing and probing into the influences of harmonics on a ratio differential relay for power transformer protection.
Development of Start·Stop Control System at Water Turbine Generator for Tidal Power Plant
Cho, Byong-Og ; Park, Chul-Won ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 28, issue 6, 2014, Pages 106~112
DOI : 10.5207/JIEIE.2014.28.6.106
Recently, tidal power generation has gained much attention. South Korea's tidal power generation systems were imported from abroad by turnkey type and have being operated. Therefore, for efficient operation and technological independence of a tidal power system, development of core technology is required. This paper deals with the start stop control system of water turbine generator in the tidal power plant, as one of our development project results. Using the SCADA system, the status and operations of water turbine generator in the tidal power plant, as well as simulation for calculation of maximum power were carried out. A small model type of start stop control device was also developed. In addition, the control system in Sihwa tidal power plant was modeled, and the results obtained by the dynamic simulation were given in graphics by 2D simulator.
Modeling of Load Element for a Low Voltage DC Distribution System
Gwon, Gi-Hyeon ; Han, Joon ; Oh, Yun-Sik ; Kim, Eung-Sang ; Kim, Chul-Hwan ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 28, issue 6, 2014, Pages 113~121
DOI : 10.5207/JIEIE.2014.28.6.113
At the end of the 19th century, a battle known as the War of the Currents was fought over how electricity would be generated, delivered, and utilized. In this day and age, there has been a growing interest in Green Growth policies as countermeasures against global warming. As a result of these policies, the use of new and renewable energy needed a power converter to replace fossil fuels has expanded. To reduce power consumption through high efficiency of conversion, Low Voltage DC (LVDC) distribution systems are suggested as an alternative. In a DC distribution system, DC loads are very efficient due to decrease the stages of power conversion. If the LVDC distribution system is adopted, not only DC load but also existing AC loads should be connected with LVDC system. Thus, the modeling of two loads is needed to analyze the DC distribution system. This paper, especially, is focused on the modeling of resistive load and electronic load including power electronic converters using ElectroMagnetic Transient Program (EMTP) software.