• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.21 no.1
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• pp.35-41
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• 2007

Recently, there are increasing social needs for stable supply of electric power and securing high quality of information and communication services. In this work, to propose the effective protection countermeasures of information-oriented equipments against lightning surges, the protection effects of surge protective devices(SPDs) were experimentally investigated using actual-sized test circuits in various installation conditions. As a result, it was found that the protection effect of SPDs is quite different depending on the factors, such as the grounding system of power source, numbers of branch circuits, wiring method of grounding leads, and etc. In case of installing SPDs for information-oriented equipments, including all electric power lines and communication lines, the common grounding should be the most effective. Wiring method containing grounding leads with power lines in metal conduit is suitable to improve the surge cutoff performance of SPDs.

• Electric Engineers Magazine
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• s.311
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• pp.23-29
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• 2008

이 규격은 2006년에 제1판으로 발행된 IEC 62305-1, Protection against lightning-Part 1 : General principles을 기술적인 내용과 규격의 양식을 변경하지 않고 한국산업규격으로 제정한 것이다.

• Electric Engineers Magazine
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• s.324
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• pp.23-29
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• 2009

이 규격은 2006년에 제1판으로 발행된 IEC 62305-1, Protection against lightning-Part 1 : General principles을 기술적인 내용과 규격의 양식을 변경하지 않고 한국산업규격으로 제정한 것이다.

• Electric Engineers Magazine
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• s.323
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• pp.21-25
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• 2009

이 규격은 2006년에 제1판으로 발행된 IEC 62305-1, Protection against lightning-Part 1 : General principles을 기술적인 내용과 규격의 양식을 변경하지 않고 한국산업규격으로 제정한 것이다.

• Electric Engineers Magazine
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• s.310
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• pp.26-30
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• 2008

이 규격은 2006년에 제1판으로 발행된 IEC 62305-1, Protection against lightning-Part 1 : General principles을 기술적인 내용과 규격의 양식을 변경하지 않고 한국산업규격으로 제정한 것이다.

• Electric Engineers Magazine
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• s.312
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• pp.19-24
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• 2008

이 규격은 2006년에 제1판으로 발행된 IEC 62305-1, Protection against lightning-Part 1 : General principles을 기술적인 내용과 규격의 양식을 변경하지 않고 한국산업규격으로 제정한 것이다.

• Proceedings of the KIEE Conference
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• 2011.07a
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• pp.578-579
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• 2011

This paper describes the analysis of induced lightning surge phenomena at underground power cables under construction when the lightning surge strikes at phase conductor of grounding wire of overhead line in service. Therefore, This paper proposes the optimal protection methods establishment against lightning surge induced from operating transmission.

• The Proceedings of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.11 no.6
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• pp.96-103
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• 1997

This paper deals with the malfunction characteristics of the earth leakage circuit breakers(ELBs) applied by a lightning impulse voltage. In the cases of the regulation of KS C 4613 and the simulated circuits with surge protection devices, the dead operation characteristics of the ELBs against lightning impulse voltages were experimentally investigated and discussed. As a result, all the specimens(ELBs) used in this work have a cutoff performance of the lightning impulse voltage when the differential mode surges were injected at the input terminals of the ELBs owing to a surge absorber installed at the power source side of amplification circuit. Four kinds of the specimens have brought about malfunction in the condition of the lightning impulse dead operation test defined in KS C 4613, and the malfunction voltages are relatively high and are about 5-6.5[kV]. In the case of the simulated test circuit with surge protection devicesthree kinds of the ELBs have led to malfunction. Also the voltage level causing the malfunction of the ELBs is decreased by operation of surge protection devices, and it ranges from 3 to 5(kV).

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.16 no.3
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• pp.93-100
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• 2002

In this paper, in ordor to examine the relevant technical facts which are very instructive to revise the domestic standard for lightning protection systems, standards and technical guideline for the protection of structure against lightning were reviewed, and several issues of the domestic standards were experimentally investigated. As a consequence, the insulator of relatively low implse voltage and a large percentage of lighting rods is flashovered by relatively low impulse voltage and a lage percentage of lighting current flows through supporting mast. Thus the potential gradient in the vicinity of supporter for lighting rods is extremely increased and the role of lighting propection systems is nullified. It seems obvious that the flashover of insular supporting lighting rod can range from erratic operation of microelectronic devices to minor physical ham or even death, or costly damage electrical equipment.

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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• 2009.05a
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• pp.88-91
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• 2009

For lightning currents, a grounding system shows the transient grounding impedance characteristics. A grounding system for protection against lightning should be evaluated by the transient grounding impedance, not it's ground resistance. The transient grounding impedance varies with the shape of ground electrode and earth characteristics as well as the waveform of lightning surge current. For the analysis and practical use of transient grounding impedance, the characteristics of transient grounding impedance should be analyzed theoretically and this paper suggests the theoretical analysis for the transient grounding impedance of counterpoise by using the distributed parameter circuit model. EMTP and Matlab are used to simulate the distributed parameter circuit model of counterpoise and the adequacy of the distributed parameter model of counterpoise is examined by comparing the simulated results with the measured results.