• 대한전기학회:학술대회논문집
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• 대한전기학회 2015년도 제46회 하계학술대회
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• pp.333-334
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• 2015

2015년 발,송,배전 설비 신설, 변경과 최대부하82,000MW에 대비하여 우리나라 전력계통의 운영방안을 검토하였다. 고장전류를 차단기 정격 내에 유지할 수 있도록 모선분리, 선로분리 등을 적용하였고, 특히 765kV 송전선로 고장시 계통안정을 위해 수도권의 부하를 차단하는 장치를 정지하는 방안을 마련하여 수도권 계통안정에 기여하였다. 인천지역에서 나타난 과전압 및 안정도 약화에 대해 적절한 발전및 송전제약 한계값을 적용하여 인천지역의 안정 운영에도 기여하였다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2002년도 하계학술대회 논문집 A
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• pp.35-37
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• 2002

한전계통의 구조는 원거리 발전단에서 부하 밀집지역인 수도권 지역으로의 장거리 송전을 하고 있다. 본 논문에서는 765kV 송전선로 신가평-신태백 2회선 상정사고에 대하여 수도권 및 인근지역에 대한 순동 무효전력을 확보함으로써 계통 전압을 0.96 p.u - 1.03 p.u 사이로 전압안정도를 유지할 방안과 순동 무효전력 투입위치와 투입량 산정방안에 대하여 모의 연구하였다.

• KEPCO Journal on Electric Power and Energy
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• 제7권1호
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• pp.45-50
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• 2021

우리나라 서해안 및 동해안지역에는 대규모 발전단지가 집중되어 운영 중이며 이 발전단지들의 발전력을 송전하고 있는 765kV 송전선로 2 회선 고장이 발생하는 경우 송전선로의 용량부족으로 인해서 수 GW 규모의 발전력을 불시에 탈락시키도록 보호체계(SPS, Special Protection System)가 운영 중이다. 이 SPS 가 동작하여 대규모 공급능력이 불시에 상실되면 급격한 주파수 하락이 발생하게 되어 저주파수계전기(Under Frequency Relay, UFR)가 동작할 수 있기 때문에 SPS 탈락 발전기의 출력을 상시에 감소시키는 제약비발전(Constraint off)을 시행하고 있다. 이 제약비발전으로 인해 매년 수천억원의 제약비용이 발생하고 있기 때문에 제약을 완화시키기 위한 방안으로 배터리 에너지저장장치(BESS)를 적용하는 사업이 추진되고 있다. 이는 "발전제약완화 에너지저장장치(이하 발전제약완화용 ESS) 사업"으로 불리며 전국 19 개 변전소에 총 1.4GW(2C-Rate)의 에너지저장장치가 설치되는 국내 최대규모의 BESS 사업이다. 향후 송전망 확충에 의해서 발전제약이 해소되는 경우 주파수 조정용, 재생에너지 변동성 완화용 등의 다목적 ESS 로 활용될 계획이다. 본 보고서에서는 발전제약완화 ESS 사업의 기술적 효과를 실효치 기반의 시뮬레이션(PSS/E v33.3)을 통해서 검토하였다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2005년도 제36회 하계학술대회 논문집 A
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• pp.632-634
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• 2005

Korea takes part in overseas business by use of accumulated advanced technology through construction of the worlds first 765kV double circuit transmission system designed with pure local technology. 'Development Study on the Power System Network Analysis in Myanmar' was received in the year 2001 and was completed in the year 2002. The following project,'Feasibility Study and Basic Designs for the 500kV Transmission System in Myanmar' has been in progress since January, 2004. With regards to this project the master plan for the Myanmar long term power system was submitted in January 2005, and now the basic designs for the 500kV transmission system construction are in progress. Technical data for the design of the transmission line is calculated using a very complex numerical formula that is almost impossible to be completed by hand. So the transmission technical calculation system was developed to calculate and support Myanmar technical data for the design of transmission line with respect to factors such as wind prossure load, tower design data conductor design data and insulator design data on the basis of weather conditions for the Myamar transmission line design area of the Myanmar 500kV trans- mission line construction basic design.

• 대한전기학회논문지:전력기술부문A
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• 제51권1호
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• pp.23-28
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• 2002

In order to survey the radiation characteristics of pure line noise of unwanted noise from overhead high voltage AC transmission lines, a disk type gap noise generator was manufactured. Disk size which decides capacitance between the noise generator and earth was selected through preliminary indoor experiments and analysis by using surface charge method. The capacitance is one of principal parameters related to the injection of a proper noise current into lines. On the basis of the capacitance obtained from calculation, 5mm of space was given to the gap of the noise generator to be installed o test line and an aluminum disk of 60cm radius was made. The field experiments were performed with the noise generator hung on the Kochang 765 kV full scale test line. As the results, the useful data which can be used to analysis the radiation characteristics of noise from transmission lines were obtained. Those are the directivity of antenna toward the line, lateral profiles, frequency spectra, height pattern and so on.

• 한국소음진동공학회논문집
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• 제13권9호
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• pp.671-678
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• 2003

Spacer dampers maintain the constant gaps between each conductor in a bundle conductor-transmission line, and are installed at proper intervals to keep a line from all sorts of damages derived from the vibration energy caused by mechanical or electrical external factors. It is most important to embody a technology which considers difficulties of maintenance and repair, and has optimum elements in order to prevent accidents such as destruction by fire or the snapping of a wire by the effect of vibration phenomenon coming from transmission line. In the present thesis, therefore, the analysis of vibratory characteristics of spacer damper is set up by analytical methods such as the analysis of conductor motion's governing equation, the equation of spacer damper's motion, spacer damper-fastened wire's motion in a span, and the numerical analysis of finite difference method. Furthermore, the installation distance between spacer dampers was scrutinized by simulations of various vibration phenomena which change at any time as actual conditions do, and hereafter we will be able to analyze all kinds of vibration phenomena coming from a boltless spacer damper with 6 bundle conductor for 765 k V transmission line based on new analytical methods.

• 대한전기학회논문지:전기물성ㆍ응용부문C
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• 제51권10호
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• pp.485-491
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• 2002

Since Wertheimer and Leeper reported possible adverse health effects of magnetic field in 1979, worldwide researches on this issue have been conducted. More recently, the U.S. Congress instructed the NIEHS (National Institute of Environmental Health Sciences), NIH (National Institute of Health) and DOE (Department of Energy) to direct and manage EMF RAPID (Electric and Magnetic Fields Research and Public Information Dissemination) program aimed at providing scientific evidence to clarify the potential for health risks from exposure to extremely low frequency electric and magnetic fields(ELF-EMF). Although they concluded that the scientific evidence suggesting adverse health risks of ELF-EMF is weak, the exposure to ELF-EMF cannot be recognized as entirely safe. Therefore, the purpose of this article is to describe magnetic field 3-D calculation and to evluate eddy current of human body compare to international guide line recognized one of the basic problems. In open boundary problem, Magnetic field using FEM is not advantageous in the point of the division of area and the proposition of the fictitious boundary. Therefore, we induced the analytic equation of magnetic field calculations so but the finite line segment based on Biot-Savarts law Also, Eddy currents induced due to ELF-EMF magnetic field are computed. To calculate induced currents, impedance method is used in this paper, An example model of human head with resolution of 1.27cm is used. In this paper, We evaluate the magnetic field and eddy current of human head around 765 kV transmission lines compare to international guide line.