• Electronics and Telecommunications Trends
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• v.17 no.4 s.76
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• pp.123-134
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• 2002

ISO/IEC14443-1(1), ISO/IEC10536-1(2), 그리고 ISO/IEC15693-1(3)에서 정의하고 있는 비접촉식 카드의 교류전기장 및 교류자기장에 대한 내성력 시험에 대해 살펴보고자 한다. 상기 규격은 ISO/IEC JTC1 기술위원회의 SC17에서 다루고 있으며, 아직 상기 표준 규격은 초안 상태에 있어 상세한 시험 방법에 대한 규격이 마련되어 있지 않은 실정이다. 그럼에도 불구하고 칩 카드 수입국은 수출업자에게 교류전기장 및 교류자기장 내성시험을 요구하고 있다. 따라서 업계에서는 시험 시설, 시험 방법, 시험 절차, 시험 평가 부분에서 많은 혼란이 발생되고 있다. 이러한 시험에 대한 대응책이 국가적 차원에서 시급히 마련되어야 할 것이다. 본 고에서는 이를 위한 일련의 과정으로서, 칩 카드 관련 국제 규격(1)-(5) 동향을 살펴보고, 교류전기장 및 교류자기장 내성력 시험 절차를 마련하기 위한 관점에서 IEC61000 시리즈 중에서 RF 복사 내성시험인 IEC61000-4-3(6), IEC61000-4-8, IEC61000-4-9, IEC61000-4-10, IEC61000-4-23(7)에 대한 분석을 동시에 실시하였다.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.21 no.10
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• pp.150-158
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• 2007

Large steel industries have time-varying nonlinear loads including electric arc furnaces. These nonlinear loads generate harmonic currents and create distortions on the sinusoidal voltage of the power system. Flicker can be defined as the effect produced on the human visual perception by a changing emission of light lamps subjected to magnitude fluctuations of their supply voltage. The main objective of the static var compensator(SVC) is to maintain the rms voltage at the point of common coupling within the limit. In this paper, harmonic and flicker mitigation studies with and without the SVC are investigated and are evaluated by the IEC 61000-3-6 and IEC 61000-3-7.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.21 no.2
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• pp.71-77
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• 2007

High speed electric trains have time-varying nonlinear loads causing voltage fluctuations to the power system. A cumulative probablistic approach is the most commonly used method to solve time varying loads. Flicker can be defined as the effect produced on the human visual perception by a changing emission of light lamps subjected to magnitude fluctuations of their supply voltage. This paper provides an in depth analysis on harmonics and flickers measurement of the high speed electric train loads. And the measurement results are evaluated by the IEC 61000-3-6 and IEC 61000-3-7.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.21 no.3
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• pp.50-55
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• 2007

A large steel industry which has nonlinear loads including electric arc furnaces is one of the extra high voltage customers. These nonlinear loads generate harmonic currents and create distortions on the sinusoidal voltage of the power system. Harmonic field measurements have shown that the harmonic contents of a waveform varies with time. A cumulative propablistic approach is the most commonly used method to solve time varying harmonics. In this paper the in varying harmonics of electric arc furnace loads are evaluated by international harmonic standards(IEC 61000-3-6, IEEE 519 and JIS C 61000-3-2).

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.20 no.1
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• pp.91-99
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• 2006

Large steel industries have nonlinear loads including electric arc furnaces and harmonic field measurements have shown that harmonic content of a waveform varies with time. Since the large loads are supplied from the power system grid, it must be recognized that not only will the system of utility be impacted, but neighboring customer system could be impacted as well. In this paper time-varying harmonics are evaluated by international harmonic standards IEEE Std. 519 and IEC 61000-3-6 using a cumulative probablistic approach.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.20 no.2
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• pp.29-37
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• 2006

Heavy chemical industries have nonlinear loads including elecrolyzers. AC-DC converters are the most widely used in an elecrolysis in a chemical plant. The electrolysis consists of AC-DC converter groups connected in parallel at the DC side. The converter operations cause harmonic currents and create distortions on the sinusoidal voltage of the AC power system. This paper provides an in depth analysis on harmonics field measurement for the electrolyzer loads and harmonics assessment by the international harmonic standards IEC 61000-3-6 and IEEE 519-1992.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.20 no.6
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• pp.35-42
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• 2006

Large steel industries have nonlinear loads including electric arc furnaces. These nonlinear loads generate harmonic currents and create distortions on the sinusoidal voltage of the power system. This paper provides an in depth analysis on harmonics field measurement of the electric arc furnace loads, adding a single-tuned filter at the customer bus for reducing harmonic distortion and harmonics assessment by the international harmonic standards IEC 61000-3-6 and IEEE Std. 519. The EDSA program was used as a simulation tool for the case study.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.20 no.4
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• pp.12-20
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• 2006

Heavy chemical industries have nonlinear loads including electrolyzers. The electrolysis consists of AC-BC converters which generate harmonic currents and create distortions on the sinusoidal voltage of the power system. This paper provides in depth an analysis on harmonics field measurement for the electrolyzer loads, adding a single-tuned filter at the customer bus for reducing harmonic distortion and harmonic assessment by the international harmonic standards IEC 61000-3-6 and IEEE Std. 519. The EDSA program was used as a simulation tool for the case study.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.20 no.7
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• pp.29-37
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• 2006

High speed electric trains have nonlinear loads including converters and inverters for the control synchronous motors. Harmonics produced by these devices are large, but also have noticeable time varying characteristics. Since the large loads are supplied from the power system grid, it must be recognized that not only will the system of utility be impacted, but neighboring customer system could be impacted as well. In this paper time-varying harmonics for high speed electric train loads are measured and evaluated by international harmonic standards IEEE Std. 519 and IEC 61000-3-6 using a cumulative probablistic approach.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.21 no.6
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• pp.40-47
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• 2007

High speed electric trains have nonlinear loads including converters and inverters for the control synchronous motors. Harmonic field measurements have shown that the harmonic contents of a waveform varies with time. Direct application of the harmonic assessment to the snapshot measurements would result in ambiguous conclusions depending on which instant is sampled. A cumulative probablistic approach is the most commonly used method to solve time varying harmonics. Harmonic simulations are performed to evaluate the harmonic voltage and current distortions throughout the system. This paper provides an in depth analysis on harmonics field measurement of the high speed electric train loads, harmonics assessment by the international harmonic standards IEC 61000-3-6 and IEEE Std. 519-l992, and harmonics simulation using EDSA program for the case study.