• 대한전기학회논문지:전기물성ㆍ응용부문C
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• 제49권5호
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• pp.310-314
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• 2000

To study the basic research of the lightning parameters for power system operation, LPATS(Lightning Positioning and Tracking System) has been introduced since 1995 in KEPCO(Korea Electric Power Corporation). We have developed the lightning parameters analysis program which can produce accumulative magnitude distribution of lightning current and IKL map by LPATS data. We obtained the various statistical distributions of lightning current parameters since 1996 by the lightning analysis program for the pertinent insulation design. In this paper, we describe the LPATS system in KEPCO, the statistical distribution of lightning current parameters and the IKL(Isokeraunic Level) map from 1996 to 1998. And the compared results between the calculated LFOR(lightning flashover rate) and the observed rate are also described.

• 조명전기설비학회논문지
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• 제21권10호
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• pp.40-45
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• 2007

뇌경보시스템은 낙뢰에 의한 인적 물적 피해를 예방하는 중요한 장치이다. 본 논문에서는 뇌경보시스템의 주요기능으로 뇌운의 이동과 활동을 감시할 수 있는 뇌방전 위치표정 알고리즘 및 회로에 대해 연구하였다. 뇌방전시 발생하는 전계성분은 whip 안테나와 공진주파수 300[kHz]의 협대역 공진증폭기로 검출한다. 자계파형 측정회로는 직교루프코일과 적분증폭기로 구성되며 주파수 대역은 5[kHz]$\sim$1.2[MHz]이다. 전계파형으로 뇌방전의 극성을 판별하고, 자계파형의 크기와 영점교차점에 의해 방향과 거리를 산출하여 뇌방전의 위치를 표정한다.

• 전기학회논문지
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• 제56권8호
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• pp.1503-1510
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• 2007

To implement a high-precision lightning tracking system utilizing TDOA measurements, high-speed data acquisition and precise timing synchronization between ground sensors should be achieved. At the same time, considering the size of digitizer's memory, the data memory needs to be managed so that only the sampled data around the occurrence of stepped leader pulse is stored. This paper presents a detection-and-acquisition system for lightning signals that is the main equipment of ground sensor in lightning tracking system. GPS clock module is used to get precise timing synchronization and the 500MHz high speed digitizer is employed. In order to detect the leading edge of the lightning pulse and save the sampled data and its timing, lightning detection module is implemented and multi-record method is employed in the proposed system. Field experiment results show that the proposed system can detect and save the lightning signal efficiently.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2002년도 하계학술대회 논문집 C
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• pp.1772-1774
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• 2002

Because the overhead transmission lines are exposed to the outdoor weather, the faults of the transmission lines are due to natural conditions, and among these faults, the outage rate by lightning is about 50%. The lightning causes the damage of power system equipments, the shut down of electricity and the electro-magnetic interference. To study the basic research of the lightning parameters for power system operation, LPATS-III (Lightning Positioning and Tracking System) has been introduced since 1995 in Korea. This paper describes the inspection result about location information error and the statistical distribution of lightning current.

• Journal of Positioning, Navigation, and Timing
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• 제10권2호
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• pp.139-144
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• 2021

In this paper, we described configuration and construction of infrastructure for the KASS Reference Station (KRS), subsystem of Korea Augmentation Satellite System (KASS). KASS system consists of three subsystems(KRS, Mission Control Center (MCC), KASS Uplink Station (KUS)). One of these subsystems, KRS receives GNSS data for generating range error and integrity verification and sends to MCC. It is needed to antenna facilities for mounting GNSS antenna and shelter for operating KRS and infra equipment(power and network system, lightning and grounding system, fire extinguish) for operating KRS. For this reason, we have established the requirements for KRS infrastructure and constructed infrastructure for KRS to meet the requirements of KRS infrastructure.