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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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The Transactions of The Korean Institute of Electrical Engineers
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The Korean Institute of Electrical Engineers
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Volume & Issues
Volume 64, Issue 12 - Dec 2015
Volume 64, Issue 11 - Nov 2015
Volume 64, Issue 10 - Oct 2015
Volume 64, Issue 9 - Sep 2015
Volume 64, Issue 8 - Aug 2015
Volume 64, Issue 7 - Jul 2015
Volume 64, Issue 6 - Jun 2015
Volume 64, Issue 5 - May 2015
Volume 64, Issue 4 - Apr 2015
Volume 64, Issue 3 - Mar 2015
Volume 64, Issue 2 - Feb 2015
Volume 64, Issue 1 - Jan 2015
Selecting the target year
Optimal Operation of Reactive Power Compensation Devices for Voltage Control of Emegency Status
Ahn, Chang-Han ; Baek, Young-Sik ;
The Transactions of The Korean Institute of Electrical Engineers, volume 64, issue 5, 2015, Pages 661~666
DOI : 10.5370/KIEE.2015.64.5.661
This paper proposes a method for solving running cost problem by minimizing switching reactive power compensation devices. An objective function was modeled by calculating the weighting value of cost, and a solution was derived using ILP. This paper suggests optimal coordinative control method between FACTS, Shunt Reactors, Capacitors and OLTC. Therefore, it is valuable for decision maker in determining order and capacity of devices which gaining a voltage stabilization. As a result, the objectives of voltage stabilization and cost minimization were achieved simultaneously. This realizes the economic efficiency of the system. We start by showing how to solve systems of linear equations using the language of pivots and tableaus. The effectiveness of this technique is demonstrated in modified PSS/E MIGUM 45 bus system. The simulation results show the effectiveness of this algorithm by comparing the outcome withseveral established methods.
A Study on the Impact Analysis of Introducing Emission Trading System on CBP Market and Policy Implications
Kim, Myung-Soo ;
The Transactions of The Korean Institute of Electrical Engineers, volume 64, issue 5, 2015, Pages 667~679
DOI : 10.5370/KIEE.2015.64.5.667
The bearer of the power sector`s ETS compliance cost is power consumer for the following reasons. Firstly, power companies are constrained in establishing appropriate strategies to comply with ETS regulations due to the structural differences between the domestic power market and emission trading system. In other words, because power companies do not have a right to determine price and production of electricity, they have to compete with other companies under disadvantaged conditions in the emission trading market. Secondly, because ETS compliance cost is part of power production costs as it is also clearly written in the national greenhouse gas reduction road-map and the second energy supply plan, the cost should be included in power price following the power market operation rule. Thirdly, the most effective method to reduce carbon emissions in power sector is to reduce power demand, which is efficiently achieved through raising power price to a realistic level. Low power price in Korea is the major cause of rising power demand which is also the major cause of rising GHG emission. Therefore, power sector`s ETS compliance cost should be included in power price to encourage power consumers` actions on reducing power consumption. Fourthly, when externality cost occurs in the process of delivering public services, usually beneficiary pay principle is applied to identify the cost bearer. Since electricity is one representative public good, the bearer of power sector`s ETS compliance cost is power consumer.
Proper Cable Arrangement Selection by Induced Voltage Evaluation of DC Cable in AC/DC Hybrid Combined Transmission Systems
Son, Yong-Dae ; Lee, Jong-Beom ;
The Transactions of The Korean Institute of Electrical Engineers, volume 64, issue 5, 2015, Pages 680~688
DOI : 10.5370/KIEE.2015.64.5.680
Hybrid type combined transmission systems is being operated by AC and DC line at the same space will be expanded instead of the overhead line. However, such hybrid type combined system has problem like the arrangement selection of DC cable for effective system operation. In this paper, to select the proper arrangement of DC cable, induced voltage of DC cable influenced by AC cable was analyzed in case of several type arrangement of DC cable. Such induced voltage is in detailed analyzed not only in case of steady, but transient state. The arrangement which has the lowest induced voltage is selected as the proper one. EMTP/ATPDraw is used for modeling and analysis of hybrid type combined transmission system.
Characteristic Analysis of Kaplan Water Turbine Generator Applied to Agricultural Reservoirs
Kim, Jong-Gyeum ; Ryoo, Yeon-Su ;
The Transactions of The Korean Institute of Electrical Engineers, volume 64, issue 5, 2015, Pages 689~693
DOI : 10.5370/KIEE.2015.64.5.689
Recently, many advanced countries are devoted to the development of eco-friendly new-renewable energy to prepare for the depletion of resources. Korea belongs to the absolute lack of energy to import from abroad 97% of energy use. So, development and supply of eco-friendly energy such as small hydro power has been required even more. Our country has a large number of small-sized reservoirs and dams. So, hydro generator has been installed at the small reservoirs and dams with the economy. Since the discharge flow of agricultural reservoir is not constant, the guide vane of wicket gate is used for adjusting the output of the generator.
Design of a Troidal Type Gyro using Repulsive Power of Permanent Magnet and Coriolis Effect
Shin, Hye-Ung ; Jou, Sung Tak ; Lee, Kyo-Beum ; Han, Man Yop ;
The Transactions of The Korean Institute of Electrical Engineers, volume 64, issue 5, 2015, Pages 694~700
DOI : 10.5370/KIEE.2015.64.5.694
This paper deals with the design of 1-kW troidal type gyro. In general, gyro can be used as magnet bearing or flywheel energy storage device. The proposed troidal type gyro is used as a flywheel energy storage device. The gyro is capable of high-speed rotation in the air. The coriolis effect is taken into account when designing the rotor of the proposed gyro. Also the repulsive power of the permanent magnet is considered while selecting the shape and the thickness of the magnet. The neodymium is used as material of the magnets in this paper. The number of magnets are selected accordingly to reduce these torque ripples because torque ripples is an important factor while designing the gyro. The designed troidal type gyro is verified through the Finite Element Method (FEM).
A Study on the Improvement of Power Density for IPMSM
Jin, Chang-Sung ;
The Transactions of The Korean Institute of Electrical Engineers, volume 64, issue 5, 2015, Pages 701~707
DOI : 10.5370/KIEE.2015.64.5.701
Recently, it has to design the motor to raise power density because of many necessary application, such as home appliances and hybrid electric vehicles. Power of motor is made up of the torque and speed. So, if the motor which is the same size and shape is designed to raise speed, power and power density are increase.
Droop Control Method for Circulating Current Reduction in Parallel Operation of BESS
Sin, Eun-Suk ; Kim, Hyun-Jun ; Yang, Won-Mo ; Han, Byung-Moon ;
The Transactions of The Korean Institute of Electrical Engineers, volume 64, issue 5, 2015, Pages 708~717
DOI : 10.5370/KIEE.2015.64.5.708
This paper proposes a new reduction scheme of circulating current when two units of BESS (Battery Energy Storage System) are operated in parallel with conventional droop control. In case of using conventional droop, the terminal voltage of each BESS are not equal due to the unequal line impedance, which causes the circulating current. The operation performance of BESS is critically dependant on the circulating current because it increases system losses which causes the increasement of required system rating. This paper introduces a new reduction scheme of circulating current in which the terminal voltage difference of each BESS is compensated by adding feed-forward path of line voltage drop to the droop control. The feasibility of proposed scheme was first verified by computer simulations with PSCAD/EMTDC software. After then a hardware prototype with 5kW rating was built in the lab and many experiments were carried out. The experimental results were compared with the simulation results to confirm the feasibility of proposed scheme. Two parallel operating BESS with proposed scheme shows more accurate performance to suppress the circulating current than those with the conventional droop control.
A Novel Modulation Strategy Based on Level-Shifted PWM for Fault Tolerant Control of Cascaded Multilevel Inverters
Kim, Seok-Min ; Lee, June-Seok ; Lee, Kyo-Beum ;
The Transactions of The Korean Institute of Electrical Engineers, volume 64, issue 5, 2015, Pages 718~725
DOI : 10.5370/KIEE.2015.64.5.718
This paper proposes a novel level-shifted PWM (LS-PWM) strategy for fault tolerant cascaded multilevel inverter. Most proposed fault-tolerant operation methods in many of studies are based on a phase-shifted PWM (PS-PWM) method. To apply these methods to multilevel inverter systems using LS-PWM, two additional steps will be implemented. During the occurrence of a single-inverter-cell fault, the carrier bands scheme is reconfigured and modulation levels of inverter cells are reassigned in this proposed fault-tolerant operation. The proposed strategy performs balanced three-phase line-to-line voltages and line currents when a switching device fault occurs in a cascaded multilevel inverter using LS-PWM. Simulation and experimental results are included in the paper to verify the proposed method.
Analysis on the Generation Characteristics of the 1MW PV Plant in the Jeju Island
Lee, Gae-Myoung ; Hwang, Choong-Gu ;
The Transactions of The Korean Institute of Electrical Engineers, volume 64, issue 5, 2015, Pages 726~731
DOI : 10.5370/KIEE.2015.64.5.726
An 1 MW PV plant constructed at the Ara campus of Jeju National University in May 2012, which was the biggest roof-top PV plant in Korea and the biggest PV plant in Jeju Island at the time. In this paper the generation characteristics of the plant was analyzed on the basis of the data obtained during 2 years.
The Effect of Asymmetric Electrode Structure on the Emission Efficiency in ac Gas Discharge
Seo, Jeong-Hyun ; Shin, Bhum-Jae ;
The Transactions of The Korean Institute of Electrical Engineers, volume 64, issue 5, 2015, Pages 732~738
DOI : 10.5370/KIEE.2015.64.5.732
In ac discharge, emission efficiency shows an time-varying characteristics during discharge. The phenomenon is caused by the potential distribution changes during the discharge, which indicates that a specific potential distribution can contribute to a high improvement of the emission efficiency. To create an artificial environment for a potential distribution favorable to emission efficiency, we used the asymmetric electrode structure and proved the capability. Our results showed that the ratio of the area of anode to cathode became larger, the emission efficacy was greatly improved.
Wireless Power Receiving System Implemented on a Flexible Substrate for Wearable Device Applications
Lee, Yongwan ; Lim, Jongsik ; Han, Sang-Min ;
The Transactions of The Korean Institute of Electrical Engineers, volume 64, issue 5, 2015, Pages 739~745
DOI : 10.5370/KIEE.2015.64.5.739
In this paper, a flexible wireless power receiving system is proposed for wearable device applications. The proposed system is designed with printable component configuration to be integrable to textile material. While the defected ground structures(DGSs) are utilized for planar printable filter designs, direct impedance matching technique is considered for flexible circuit performance. The proposed system has been implemented on a flexible substrate with a thickness of 5 mils, and experimented for power conversion efficiencies and converted voltages. In order to evaluate the hardware flexibility, the system performance are measured a bended circuit board at a radius of curvature of 5 cm. The system performance is analyzed for the degradation due to the curvature. The proposed system has shown the excellent capability of far-field wireless power transfer systems in flexible device environments.
Implementation of the Variable Output Laser Diode Driver Synchronized with a Pulse Repetition Frequency Code
Lee, Young-Ju ; Kim, Yong-Pyung ;
The Transactions of The Korean Institute of Electrical Engineers, volume 64, issue 5, 2015, Pages 746~750
DOI : 10.5370/KIEE.2015.64.5.746
In this paper, we propose a simulator to evaluate the performance of the semi-active laser guidance or the quadrant photodetector and to simulate the laser power reflected from a target. The laser pulse repetition frequency was generated and synchronized with the laser pulse repetition(PRF) code. To evaluate the performances of the proposed methods, we implemented a prototype system and performed experiments. As a result, the generated high voltage was variable in the range of DC 3V to 340V and has the rate of change of 2000 V/s. PRF code can be generated within 50ms ∼ 100ms and the error is implemented within 0.3ns. The laser output is synchronized with the PRF code and has a dynamic range of 23.6dB.
Design of a Speed Controller for Vertical One-Link Manipulator Using Internal Model-based Disturbance Observer
Lee, Cho-Won ; Kim, In Hyuk ; Son, Young Ik ;
The Transactions of The Korean Institute of Electrical Engineers, volume 64, issue 5, 2015, Pages 751~754
DOI : 10.5370/KIEE.2015.64.5.751
This paper deals with a robust speed control problem of a vertical one-link manipulator in the presence of parameter uncertainties and unknown input disturbance. Uncertain load weight causes an additional sinusoidal disturbance in the rotation of the link. In order to improve the robustness against parameter uncertainties and external input disturbances, this paper employs an internal model-based disturbance observer approach. Comparative computer simulations are performed to test the performance of the proposed controller. The simulation results show the enhanced performance of the proposed method.
Design of Robust Face Recognition Pattern Classifier Using Interval Type-2 RBF Neural Networks Based on Census Transform Method
Jin, Yong-Tak ; Oh, Sung-Kwun ;
The Transactions of The Korean Institute of Electrical Engineers, volume 64, issue 5, 2015, Pages 755~765
DOI : 10.5370/KIEE.2015.64.5.755
This paper is concerned with Interval Type-2 Radial Basis Function Neural Network classifier realized with the aid of Census Transform(CT) and (2D)2LDA methods. CT is considered to improve performance of face recognition in a variety of illumination variations. (2D)2LDA is applied to transform high dimensional image into low-dimensional image which is used as input data to the proposed pattern classifier. Receptive fields in hidden layer are formed as interval type-2 membership function. We use the coefficients of linear polynomial function as the connection weights of the proposed networks, and the coefficients and their ensuing spreads are learned through Conjugate Gradient Method(CGM). Moreover, the parameters such as fuzzification coefficient and the number of input variables are optimized by Artificial Bee Colony(ABC). In order to evaluate the performance of the proposed classifier, Yale B dataset which consists of images obtained under diverse state of illumination environment is applied. We show that the results of the proposed model have much more superb performance and robust characteristic than those reported in the previous studies.
Design of Face Recognition and Tracking System by Using RBFNNs Pattern Classifier with Object Tracking Algorithm
Oh, Seung-Hun ; Oh, Sung-Kwun ; Kim, Jin-Yul ;
The Transactions of The Korean Institute of Electrical Engineers, volume 64, issue 5, 2015, Pages 766~778
DOI : 10.5370/KIEE.2015.64.5.766
In this paper, we design a hybrid system for recognition and tracking realized with the aid of polynomial based RBFNNs pattern classifier and particle filter. The RBFNN classifier is built by learning the training data for diverse pose images. The optimized parameters of RBFNN classifier are obtained by Particle Swarm Optimization(PSO). Testing data for pose image is used as a face image obtained under real situation, where the face image is detected by AdaBoost algorithm. In order to improve the recognition performance for a detected image, pose estimation as preprocessing step is carried out before the face recognition step. PCA is used for pose estimation, the pose of detected image is assigned for the built pose by considering the featured difference between the previously built pose image and the newly detected image. The recognition of detected image is performed through polynomial based RBFNN pattern classifier, and if the detected image is equal to target for tracking, the target will be traced by particle filter in real time. Moreover, when tracking is failed by PF, Adaboost algorithm detects facial area again, and the procedures of both the pose estimation and the image recognition are repeated as mentioned above. Finally, experimental results are compared and analyzed by using Honda/UCSD data known as benchmark DB.
Design of Neuro-Fuzzy based Intelligent Inference Algorithm for Energy Management System with Legacy Device
Choi, In-Hwan ; Yoo, Sung-Hyun ; Jung, Jun-Ho ; Lim, Myo-Taeg ; Oh, Jung-Jun ; Song, Moon-Kyou ; Ahn, Choon-Ki ;
The Transactions of The Korean Institute of Electrical Engineers, volume 64, issue 5, 2015, Pages 779~785
DOI : 10.5370/KIEE.2015.64.5.779
Recently, home energy management system (HEMS) for power consumption reduction has been widely used and studied. The HEMS performs electric power consumption control for the indoor electric device connected to the HEMS. However, a traditional HEMS is used for passive control method using some particular power saving devices. Disadvantages with this traditional HEMS is that these power saving devices should be newly installed to build HEMS environment instead of existing home appliances. Therefore, an HEMS, which performs with existing home appliances, is needed to prevent additional expenses due to the purchase of state-of-the-art devices. In this paper, an intelligent inference algorithm for EMS at home for non-power saving electronic equipment, called legacy devices, is proposed. The algorithm is based on the adaptive network fuzzy inference system (ANFIS) and has a subsystem that notifies retraining schedule to the ANFIS to increase the inference performance. This paper discusses the overview and the architecture of the system, especially in terms of the retraining schedule. In addition, the comparison results show that the proposed algorithm is more accurate than the classic ANFIS-based EMS system.
Antenna Array Compensation for Improved DOA Estimation
Song, Heemang ; Cho, Seunghoon ; Lee, Jaeeun ; Jeong, Seonghee ; Shin, Hyun-Chool ;
The Transactions of The Korean Institute of Electrical Engineers, volume 64, issue 5, 2015, Pages 786~791
DOI : 10.5370/KIEE.2015.64.5.786
This paper presents a signal processing method for calibrating an antenna array to solve the inaccuracy of Direction of Arrival(DOA). Using reference data quantifying amplitude and phase distortion levels for each angles, we compensate each radar array’s amplitude and phase distortion. The proposed method is applied to the Bartlett, Capon and MUSIC algorithms, Using 77 GHz Frequency Modulated Continuous Wave(FMCW) Long Range Radar(LRR) signal, we experimentally demonstrate the performance improvement after the proposed compensation.
Design of Infrared Angular Sensor for Human Joint Angle
Oh, Han-Byeol ; Kim, Ji-Sun ; Kim, A-Hee ; Goh, Bong-Jun ; Kim, Jun-Sik ; Lee, Eun-Suk ; Choi, Ju-Hyeon ; Jun, Jae-Hoon ;
The Transactions of The Korean Institute of Electrical Engineers, volume 64, issue 5, 2015, Pages 792~798
DOI : 10.5370/KIEE.2015.64.5.792
Joint angle generally can be measured to check the recovery process in rehabilitation field. This paper suggests to measure joint angle with Infrared sensor based on triangulation principle. We performed various experiments to find the optimal condition of the sensor’s attached distance, height, and angle. The results were compared with commercial goniometer for accuracy. The proposed infrared joint angle sensor can be effectively used in rehabilitation and sport science fields.
Assesment of Heart Rate Variability by Integral Pulse Frequency Modulation Model
Park, Sang-Eun ; Kim, Jeong-Hwan ; Jeung, Gyeo-Wun ; Kim, Kyeong-Seop ;
The Transactions of The Korean Institute of Electrical Engineers, volume 64, issue 5, 2015, Pages 799~804
DOI : 10.5370/KIEE.2015.64.5.799
This study aims at the new analysis of heart beat fluctuations by applying physiological Heart Rate Variability Model with representing the cardiac control system in sympathetic and parasympathetic-coupling oscillator constants, C
. To find the effects of coupling constants on the beat-to-beat fluctuations, Integral Pulse Frequency Modulation (IPFM) model is adopted to generate the time series data of ECG R-peaks and represent them by poincaré scattergram plot in the time domain and HRV in the frequency domain, respectively. The actual poincaré plots and HRV spectrum are also analyzed by acquiring the experimental data from the subjects exposed to the emotional-stress invoking environment and the function of the coupling constants are verified in terms of antagonism in sympathetic and parasympathetic activity.
A Study on Modeling of Tracking-Type Floating Photovoltaic System based on Matlab/Simulink
Kim, In-Soo ; Oh, Sung-Chan ; Kim, Yang-Mo ; Choi, Young-Kwan ;
The Transactions of The Korean Institute of Electrical Engineers, volume 64, issue 5, 2015, Pages 805~811
DOI : 10.5370/KIEE.2015.64.5.805
Floating photovoltaic systems have been developed by the construction process such as design, construction, operation and management. Therefore, the power of floating photovoltaic systems has been calculated by using simple formulas and the optimal tracking interval is set by operation experience. But, flow characteristics have a decisive effect on it unlike land based PV systems. In this paper, a tracking floating photovoltaic system is modeled by using Matlab/simulink. The modeling for the floating photovoltaic system is verified through applying the flow characteristics based on actual operating data of 100㎾ class tracking floating photovoltaic.
An Analysis of Electric Noise of Railway Electric Inspection Car Measurement Module
Park, Young ; Kwon, Sam-Young ; Cho, Chul-Jin ; Chae, Won Kyu ; Lee, Jae-Hyeong ;
The Transactions of The Korean Institute of Electrical Engineers, volume 64, issue 5, 2015, Pages 812~816
DOI : 10.5370/KIEE.2015.64.5.812
Recently, various monitoring systems have been proposed to detect interaction performance between trains and infrastructure, as well as, various techniques to improve the accuracy and performance of such inspection equipment in high speeds. Especially, it is important to predict electric noise of high speed trains due to its effect on detection system accuracy. In this paper, we analyze various types of electrical noise in electric vehicles to improve the accuracy of the detection module of the inspection car. In detail, analysis of electric noise of high speed railway is performed as a function of speed based on field tests that were carried out by HEMU-430X (Highspeed Eletric Multiple Unit - 430 km/h eXperiment).
Shape Design of IPMSM for the Reliability Improvement of Traction Motors
Lee, Ki-Doek ; Lee, Ju ;
The Transactions of The Korean Institute of Electrical Engineers, volume 64, issue 5, 2015, Pages 817~823
DOI : 10.5370/KIEE.2015.64.5.817
IPMSM for traction motor has high power density and wide operating range. But high power density causes internal temperature rise and it makes big armature reaction which causes irreversible demagnetization. And with wide operating range, rotor rotating fast gets stress from centrifugal force. For this reason, traction motor is designed to considerate stress of rotor and irreversible demagnetization for reliability. This paper explains shape design method of 120kW IPMSM accounting improvement of reliability. Finally, the validity of the analysis and the performance evaluation were verified through testing of the final model.
Design of High-Speed LSM Rotary Type Testing Machine in Consideration of Mechanical Strength
Seol, Hyun-Soo ; Park, Eung-Seok ; Lee, Ju ; Park, Chan-Bae ;
The Transactions of The Korean Institute of Electrical Engineers, volume 64, issue 5, 2015, Pages 824~829
DOI : 10.5370/KIEE.2015.64.5.824
The rotary type testing machine undergoes mechanical stress as an external force is applied. In case of the rotary type testing machine, even a tiny flaw results in a fatal demage because the size of the machine is huge. Therefore, when designing the rotary type testing machine, it is necessary to secure a safety factor with the mechanical stress analysis in order to prevent the machine from being destroyed due to scattering or transformation of rotating field. This thesis proposes a LSM rotary type tesitng machine which rotates at the speed of up to 600km/h. And the mechanical stress is considered in order that the safety factor remains above 1.5 at the maximum speed. In addition, because normal force as well as thrust occurs in the machine, the normal force exerted was considered through the strength analysis. Finally, a design plan which enables to weaken the normal force affecting the rotary type testing machine is introduced and its validity is proved by the results of FEM analysis.
A Study on ATS Control Procedure to adopt Low Density Line
Cho, Bong-Kwan ; Park, Kee-Joon ; Park, Pyoung-Sik ; Lee, Young-Soo ;
The Transactions of The Korean Institute of Electrical Engineers, volume 64, issue 5, 2015, Pages 830~837
DOI : 10.5370/KIEE.2015.64.5.830
A study which is to develop the low-cost urban railway system for low-density line such as Gwang-ju subway Line 2 is in progress, and its TCS(Train Control System) is required as an economic system which is able to train operation suitable in low-density line. We have developed the signaling equipment which is configured with automatic block system between stations, and the control center`s equipment in order to meet the requirements of TCS mentioned above. In this paper, we propose the control procedure of ATS to be required for train operation management in the low-density line such as Gwang-ju subway Line 2. The control procedure of ATS considered all features such as the requirements analysis for train operation management, the functions of train control system to be applied and the block type. Also, it considered the station(interlocking, passenger, turn-back) type, station control(stop, route, departure, turn-back departure, turn-back) type, and train operation management for exiting and entering depot. The ATS control procedure proposed in this paper has an advantage in the cost and efficiency through unification and optimization of its function. And in cost of operating and maintenance, the ATS system has a feature that can be significantly reduced.
A Study on a Regulation Draft of Inspection and Maintenance for Lightning Protection Facilities based on IEC 62305
Lee, Kang-Hee ; Lee, Sang-Hyup ; Koo, Kyung-Wan ;
The Transactions of The Korean Institute of Electrical Engineers, volume 64, issue 5, 2015, Pages 838~844
DOI : 10.5370/KIEE.2015.64.5.838
Latest development of ICT makes building, including houses, factories and public facilities, more intelligent and automatized. It follows that a wide variety of electric and ICT installations are adopted along with micro electronic equipments. Corresponding to such changes, the frequency of lightning increases due to the abnormal climate. The major damage by lightning surge is disconnection and malfunction of facilities. It is necessary, therefore, to make a regulation of inspection and maintenance for lightning protection facilities. This paper deals with main issues of a regulation draft of inspection and maintenance for lightning protection facilities based on IEC 62305