• KEPCO Journal on Electric Power and Energy
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• v.6 no.3
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• pp.271-278
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• 2020

KEPCO Research Institute developed a GIS-based autopilot drone inspection system for electric power facilities and since its pilot application in 2017, it has been successfully used to detect defects in power transmission lines. This paper presents how to operate this system in the field of power line inspection. Power transmission lines are located in a wide variety of environments such as plains, mountains, river crossings, sea crossings, and industrial areas. Among these, some transmission lines are difficult for human workers to access because of their geographies and some should be checked more often due to their severe contamination. Considering these field conditions, we classified drone operation in two categories to increase its effectiveness and efficiency - patrol surveillance and detailed inspection tasks. This paper describes the detailed procedures of the two tasks above and their field application experiences. In addition, this paper newly proposes how to construct public drone roads by using the information of KEPCO's power transmission lines.

• KEPCO Journal on Electric Power and Energy
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• v.3 no.1
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• pp.35-39
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• 2017

Recently, the public opinion is growing that the main cause of greenhouse gas, fine dust and nitrogen oxide, sulfuric acid emission is coal-fired power plant, and now the decommission or conversion to other clean fuel is being demanded. However, it is a huge national loss to decommission coal-fired power plant with remaining life, and also simple fuel converting to natural gas will lead to drastic rise on power generating cost. Therefore, this study aims to provide the analysis result about the reduction effect of $CO_2$, environment emission, and to influence to power plant performance and facilities when repowering with adding gas turbine is applied to domestic aged coal-fired power plant.

• Journal of Environmental Impact Assessment
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• v.7 no.2
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• pp.145-152
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• 1998

The first Environmental Impact Assessment(EIA) in Korea was carried out for Electric Power resource development. This study includes of the method and procedure of pre-Environmental investigation and EIA for Electric Power resource development. Through the analysis of these we make some conclusions for the improvemental and effective method of impact prediction, the environmentally sound and sustainable development of the earth(ESSD) and the collection of public opinions.

• Proceedings of the KIEE Conference
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• 1993.07a
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• pp.73-75
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• 1993

In recent years, it is widely being issued to consider the Non-Utility Generation (NUG) in the public electric utility sector. The Non-Utility Generation can be divided into two major parts, i. e., dispersed generation and privatization. In the participation of the NUGs in the public sector, the economy of scale and publiciy of the NUGs should be considered. In this paper, we with give the present status of Non-Utility Generation and. problems caused by the dispersed generation and privatization. Also, the analysis of the problems of NUGs and future policies of the electric utility will be discussed.

• Proceedings of the KIEE Conference
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• 2009.04a
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• pp.360-361
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• 2009

1970년대부터 극저주파전자계가 인체건강에 유해한지에 대한 궁금증이 증가하고 있는 실정이다. 또한 그 시기로부터 중요한 이슈에 대한 해결방안과 향후 연구방향에 대한 지표설정을 위해 많은 연구가 행해져 왔다. 본 고에서는 세계보건기구(WHO)가 2007년 극저주파전자계와 인체건강의 관계 검토를 마무리한 공식보고서(Fact sheet No.322) 결과를 고찰해 보고자 한다.

• Proceedings of the KIEE Conference
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• summer
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• pp.800-802
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• 2004

When an accident is happen due to using a bad Wire Compressor, some public resentments are caused and It cause lawsuit for we. In case, we will undergo a colossal financial loss. in addition to, Guide to improve quality of operation by using the number of times of pressing and pressing pressure with cooperative private enterprise. And because of needs for Thermal, Electrical and Chemical factor analysis of connection point of sleeve, expect to try improving problems of wire presser whole our company. We expect that reduce fault and save cost by this process. Consequently, we will prevent power losing and black out due to line faults by expulsion of inferiority equipment and prevent heating and line fault. This is possible using Alarming and Auto Locking Wire Compressor that is improve on this study.

• Proceedings of the KIEE Conference
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• 1989.07a
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• pp.246-250
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• 1989

Owing to the rapid development of economy and the higher living standard of people, electricity demands have growth and the peak load has been increased rapidly. To cope with this impacts and to reduce the cost of service,utilities are conserned about power load management program. This paper shows a scheme of power load control and the basic structure of direct load control system. And also radio control method using the public pager which is one of the best economical and serviceable method in techniques will be introduced briefly.

• Journal of Electrical Engineering and Technology
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• v.9 no.3
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• pp.991-996
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• 2014

Power frequency magnetic field is still a critical problem for new construction of overhead power transmission lines in Korea because most people have been concerned about possibly carcinogenic effects of it. Although reference level of power frequency(60Hz) magnetic field has been set to 200uT in ICNIRP guidelines published in 2010, Korean government has no intention of adjusting 83.3uT specified by law in 2006 to this new reference level in consideration of people's concerns for the time being. Regardless of the current regulated magnetic field value, electric utility company has been trying to reduce magnetic field in the residential area in the vicinity of overhead power transmission lines to take into account of public concerns on the long-term effect of magnetic fields. In an effort to reduce magnetic field, engineering side has made considerable efforts to develop passive loop based, cost-effective mitigation technique of power frequency magnetic field more than ten years. In order to verify developed power frequency magnetic field mitigation technique based on passive loop, a horizontal type of passive loop was designed and installed for commercially operating 154kV overhead power transmission line for the first time in Korea. The measurement results before and after the installation of passive loop showed that magnetic field could be reduced to about 20%. The electrical environmental effects such as AN, RI and TVI were assessed before and after the installation of passive loop and these values were complied with the requirements specified by electric utility. It has been confirmed from the field test results that passive loop could be commercially and cost-effectively utilized to mitigate power frequency magnetic field.

• Proceedings of the KIEE Conference
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• 2009.07a
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• pp.331_332
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• 2009

1979년 Nancy Wertheimer와 Ed Leeper가 수행한 연구결과에서 자기장이 소아백혈병에 의한 사망률을 높일 수 있다는 가능성을 발표한 이후, 인체건강에 유해한지에 대한 많은 궁금증이 증가해 왔다. 이후 일부 검증되지 않은 연구결과를 여과없이 인용 보도함으로써 대다수 국민이 오해하고 막연한 불안감을 갖게 된 측면이 있으며, 전기의 소중함은 누구나 인정하면서 전력시설 인근 주민은 자계에 대해 염려하며 건설반대, 전력설비 이전 등 극저주파전자계의 피해를 우려하고 있는 실정이다. 본 고에서는 국내 송전선로 극저주파자계의 노출현황을 살펴보고, 2007년 6월 세계보건기구(WHO)가 발표한 극저주파전자계와 인체건강의 관계 검토를 마무리한 공식보고서(Fact sheet No.322)를 고찰하고자 한다.

• KEPCO Journal on Electric Power and Energy
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• v.4 no.2
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• pp.63-66
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• 2018

Lattice towers and tubular steel poles have been commonly used for electrical power transmission in Korea as well as the other countries. They are durable, structurally stable, simple and can easily be constructed in limited spaces. However, residents are opposed to construct transmission lattice towers in their areas because they are not visually attractive, and electrical field occur at the transmission lines. Underground transmissions have been used instead of the traditional towers to resolve these problems, however they are not cost effective to construct and run. Therefore, we have developed compact towers that are more attractive, well blend into the surrounding environment and much more economical than underground transmissions. This paper shows the design of a compact towers with insulation arm, in order to reduce the height of tower and the separation between phases. The compact tower can be installed in a narrow right-of-way. Insulation arms are easily applied to lattice and steel tubular towers instead of steel arms. Compact towers with insulation arm are also considered as a solution to have public acceptance or to create a familiar atmosphere among towers and people. Compact tower compared with a conventional tower, insulation arms reduces the width and height of the tower by 20% and 15% respectively.