• Journal of Korean Society of Archives and Records Management
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• v.14 no.4
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• pp.7-36
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• 2014

The purpose of the study is to implement the digital archives to document environmental conflicts using open source Omeka. Mi-ryang Transmission Tower Construction Conflict is the selected case because it is very crucial and continues until today for more than 10 years. It begins with analyzing domestic and international cases of archives developed using Omeka. Based on these analysis, it draws the directions of developing Mi-ryang archives. It also investigates and analyzes the Mi-ryang conflicts as the contexts of records creation, acquire the actual records from a Mi-ryang civic group, and finally implement the collections and exhibits of Omeka-based archival system.

• KEPCO Journal on Electric Power and Energy
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• v.3 no.2
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• pp.99-105
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• 2017

Traditionally, the GPS coordinates of a transmission tower have been measured at the center of the tower on the ground, which usually takes dozens of minutes. However, this method often produces errors of tens of meters or sometimes demands several hours due to signal interference from the huge steel structure of the tower. To solve this problem, in this paper, a new measuring method for GPS coordinates of steel towers is proposed. First, instead of measuring the center of a tower, four GPS coordinates of the edges of the tower are obtained by using a measuring device with three GPS modules, and then are averaged to find the center of the tower. When a measured value is deviated considerably by signal interference, a newly proposed algorithm filters out such an inaccurate coordinate, effectively calculating the center of the tower by using other edge coordinates. Through field tests, it was confirmed that this new algorithm could improve the task efficiency and its measuring accuracy for GPS coordinates in a GPS interference environment.

• Proceedings of the KIEE Conference
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• 2005.11b
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• pp.80-82
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• 2005

There is a method for stringing conductors which is connected to a wire over transmission towers by helicopter or human power and the wire and conductors are pulled by an engine puller. The length of one string section is usually 4-6 km and 2-4 conductors are strung at the same time with a single wire. A tensioner is used to maintain the sag and a running board is installed between the wire and conductors to prevent the rotation of conductors but the variance in topology, the line angle and unequal wiring tension between conductors causes conductor rotation damage or the conductor connection point to breakaway when the pulley is passed. This paper presents a method to prevent conductor rotation during stringing by inserting a pulley in the running board and equally maintaining conductor tension by sling wire after developing and testing.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 2005.07a
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• pp.583-584
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• 2005

In this work, a novel hybrid FL sensor consisting of two Rogowski coils has been designed for the installation on the ground wire of the transmission tower. The operation range of these coils is as follows: 30kA for the fault current comingfrom the ground fault or short-circuit and for the lightning current up to 150kA over 500kHz. Thus, two important functions could be provided: one is to detect the fault current and the other one is to find the fault location between towers or the location of induced lightning stroke. The on-site investigation at 800kV test yard has been under progress for its on-site application.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
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• v.26 no.7
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• pp.646-655
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• 2015

The purpose of this study was to evaluate the perceived distance from home to high-voltage power lines using a transmission and substation geographic information system(TGIS). Of the 725, 136 respondents reported that high voltage power transmission tower, power lines or substation was within visual field range from home. Among them, 114 respondents reported valid address, which could be used in the analysis of TGIS. Forty two respondents(36.8 %) estimated that the power lines were closer and 15 respondents(13.2 %) estimated that they were farther than they actually were. Our current findings suggest that the reported distance from home to high-voltage power transmission towers, power lines, and substations cannot be used as a proxy for exposure to electromagnetic fields due to the low validity.

• Journal of Electrical Engineering and Technology
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• v.10 no.3
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• pp.1293-1297
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• 2015

This paper introduces the insulation coordination study results for UHV AC systems which was performed by CIGRE working group. The study results will be discussed within IEC technical committee in order to amend the IEC Insulation Coordination 60071-1 Ed. 8 2010 and 60071-2 Ed. 3, 1996. This paper includes the insulation coordination of transformer, gas insulated switchgear, metal oxide arresters and clearances of transmission towers. This article also illustrates the overvoltage specific to UHV systems such as TOV(temporary overvoltage), switching overvoltage, lightning overvoltage and VFTO(very fast transient overvoltage).

• Proceedings of the KIEE Conference
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• 2003.07a
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• pp.442-444
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• 2003

For the safety of aircraft, aviation obstacle lights must be attached to the transmission towers in accordance with the governing law. Aviation obstacle lights which consist of solar cells, batteries. xenon lamps and a regulator substituted for aviation obstacle lights using AC power. A xenon lamp has advantage such as high brightness but also has disadvantage like large power consumption which cause lighting system to have many solar cells and batteries. This paper introduces an application of a aviation obstacle light using LED lamp through the economic analysis between LED lamp and xenon lamp.

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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• 2006.05a
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• pp.500-503
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• 2006

This paper gives a Wireless lightning detecting and warning system. This system composed of transmitter and receiver. It promptly senses lightning strikes on the power lines and transmission towers by using the lightning current detection circuit in a small transmitter situated on the top of power tower, and it sends the number of lightning strikes and the ID. of the tower to patrols through the receivers. This system will be used to discover the exact location of a lightning strike.

• Proceedings of the KIEE Conference
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• 2009.07a
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• pp.325_326
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• 2009

For the sake of the safety of aircraft, aviation obstacle lights should be installed on the towers of transmission line in accordance with the Aviation Act. At present, the used solar-cell aviation obstacle lights are composed of LED lamp and a regulator, batteries, solar-cells which are divided into four parts. And, the divided four parts are connected by cable. Also, aviation obstacle lights are consisted of 150 LED lamps. therefore, the scale of sollar-cells, batteries and the power consumption of aviation obstacle light is big. For that reason, this paper would introduce the development of the solar-cell type single body LED aviation obstacle using the high brightness LED in order to make aviation obstacle more lightened and small-sized.

• Journal of the Korea institute for structural maintenance and inspection
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• v.17 no.2
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• pp.83-93
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• 2013

Generally the capacities of electric power transmission tower's members are improved by increasing their stiffness nature through injection of grout or attachment of other structural stiffeners. Those are for upgrading their axial strength by fulfillment of proper materials into pipe members, increment of member dimension by addition of section, or a combination of the two. However the use of innovative and unusual procedures would be positively recommended for getting more stable state. It is that buckled members are replaced with lengthened and strengthened members. In providing the structural restoration procedures for the existing electric power transform tower whose main members have been damaged due to unequal foundation settlement, structural damage inspection works and numerical analyses for the damaged one and the restored one were done in detail at first. secondarily member-exchanging works using a newly-generated jacking system and strengthened members were achieved. This figures are to point clearly to inherent advantages attending the management of the towers.