• Proceedings of the KIEE Conference
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• 2009.07a
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• pp.323_324
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• 2009

345kV Incheon Thermal Power Plant Transmission Line Collapse Analysis and Countermeasures. The Typhoon Galmaegi which had been formed in July 15, 2008 diminished into a tropical cyclone and cooled the air above the West Sea. The cooled air colliding with the warm inland air caused a strong whirlwind at some places in the west seaside; the whirlwind battered the 345kV Incheon Thermal Power Plant Transmission Line to be collapsed. The resistance against wind pressure, one of the key elements in transmission line engineering, is designed to endure the pressure corresponding to the maximum instantaneous wind speed. Before the above accident happened, no transmission line has ever been collapsed by a whirlwind. So this paper is aimed to analyze causes that collapsed 345kV Incheon Thermal Power Plant transmission line and to introduce countermeasures.

• Proceedings of the KIEE Conference
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• 2009.07a
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• pp.1209_1210
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• 2009

Recently interior of a country have been innovated driverless LRT(lightweight railway train) that has a virtue of reducion of payroll cost, decrease of headway and improvement of speed. But, if driverless LRT will be happened a accident, response capacity considerably have low. And then passenger will have feel fear. This thesis had examination a IEC 62267 : AUGT safety requirement and analyze safe facilities of the inside and outside of the country. Later on, this result will have not only increase economics, reliability, convenience and safety but also set standardization standard.

• The Korean Journal of Pain
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• v.29 no.4
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• pp.274-276
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• 2016

Chronic pelvic pain in women is a very annoying condition that is responsible for substantial suffering and medical expense. But dealing with this pain can be tough, because there are numerous possible causes for the pelvic pain such as urologic, gynecologic, gastrointestinal, neurologic, or musculoskeletal problems. Of these, musculoskeletal problem may be a primary cause of chronic pelvic pain in patients with a preceding trauma to the low back, pelvis, or lower extremities. Here, we report the case of a 54-year-old female patient with severe chronic pelvic pain after a transcutaneous electrical nerve stimulation (TENS) accident that was successfully managed with image-guided trigger point injections on several pelvic stabilizing muscles.

• Proceedings of the KIEE Conference
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• 2001.07b
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• pp.855-858
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• 2001

The single transformer appeared the electro-magnetic force must be constructed to support it. it must construct the single transformer to supporting the electro-magnetic force appeared by the cut-off current. the problem is that the electro-magnetic occurs the modification of the single transformer and an serious accident. In the case of the molding-transformer, the part of the molding cast used in the construction occurs the crack, because of the strong force. therefore, in this paper, the molding material used in the molding-transformer is settled by comparing the results from commercial soft ware of F.E.M and a out-equipment circuit.

• Proceedings of the KIEE Conference
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• 2000.11d
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• pp.657-659
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• 2000

The importance of total management for maritime structures (Ports, Piers, docks. marine bridges, marine roads, submarine pipelines, etc.) is more and more increasing in these days. Especially, in spite of the marine structures are exposed at the various corrosion circumstances, there are not only a standard of Cathodic Protection System but also knowledge of importance for necessity of corrosion monitoring. Therefore, this paper presents the results of development for the Remote Real-Time Corrosion Monitoring and Control System Using by TRS on Maritime Metallic Structures which can be prevents a big accident by corrosion.

• Proceedings of the KIEE Conference
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• 1999.11c
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• pp.618-620
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• 1999

The owner of metallic structures has a burden of responsibility for the protection of corrosion and the prevention against big accident such as gas explosion or collapse of bridge and building and so on. So, he has been spent the money and the time for corrosion monitoring and analysis of measuring data. Therefore, KERI(Korea Electrotechnology Research Institute) has developed the real-time wireless remote corrosion monitoring system using by TRS(Trunked Radio System). The results of development for corrosion monitoring system are described briefly. Especially, the interfacing technology between the server and rectifier introduced in this paper.

• Proceedings of the KIEE Conference
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• 1999.11c
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• pp.769-771
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• 1999

In general, the most of GIS is only deal with the material and geometric data which are position, radius, length etc except a corrosion data. In present, the owner of metallic structures having an interest in that my structures do corrode or not and how many life time is there? So, we need the development of GIS interconnected corrosion prediction system on the view point of the efficiency of operation and the protection for big accident. The results of development of its system are described in this paper. It can do life prediction and interference analysis and also newest corrosion data should be updated regularly.

• Proceedings of the KIEE Conference
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• 2000.07a
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• pp.461-463
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• 2000

As increasing the accident of distribution transformers, we need to manage them efficiently. This paper proposes the method for transformer's management using multi-channel wireless data communication. The Data Acquisition System(DAS) was developed to manage transformers and the HDLC protocol applied to the system. Additionally, it will be feasible to diagnose distribution transformers by checking load conditions such as hot spot temperature, ambient temperature, load current, etc. and using adequate algorithm.

• Proceedings of the KIEE Conference
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• 2005.07a
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• pp.709-711
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• 2005

Developing fault location system for underground power cable which can detect its fault location exactly require very high speed data acquisition and signal processing capability. We are developing fault location system which is different from conventional fault locator. This fault location system monitor underground power cable by using on-line speed current sensor and if there are an accident, it record its transient signal and calculate fault location by analyzing it. Signals which acquired when power cable fault arise, showed transient characteristics and its frequency band is very hish. So, to develop fault location system, we designed special high speed data acquisition and signal processing board. In this thesis, we describe on data acquisition and signal processing H/W design for fault location system on underground power cable.

• Proceedings of the KIEE Conference
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• 2005.07a
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• pp.715-717
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• 2005

This paper analyses the arc-energy with joint box type through a field test on underground power OF cable. In order to obtain the data, the actual proof test using short-circuit generation for real scale power transmission tunnel carried out. This paper is expected to contribute the fire accident prevention on underground power cable systems and the believability improvement of electric power facilities.