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Kim D.-Y.,Daewon Electrical Corporation | Kim J.-S.,Daewon Electrical Corporation | Choi J.-Y.,Chungnam National University
IET Conference Publications | Year: 2013

This paper presents the most efficient induced lightning shielding method by changing ground resistances and grounding places in various ways in order to analyze the effect of ground resistance according to grounding places suitable for multi-grounding, as well as the effect of ground resistance according its connection. This study proposed a distribution line including an overhead wire commonly used as a neutral wire and examined the induced lightning shielding effect by proposing a line consisting of an overhead ground wire and a neutral wire in a 22.9kV transmission line structure. To do so, this study made a simulation line by down scaling the structure of an existing multi-grounding type 22.9kV distribution line to 50:1 and performed tests on this simulation line. As a result, it is thought that even though an existing line is replaced with a line that includes a neutral wire, system stability can be secured. It can be seen that for every distribution line it is more efficient for the improvement of system stability to ground all poles even though ground resistance is a little higher, rather than to install a ground wire with low ground resistance.


Trademark
DAEWON Electrical CO. | Date: 2016-05-31

Computer programs and downloadable software that are both compatible with a smart phone that performs remote diagnostics with respect to accidents involving fire and electricity and telecommunications failures in order to resolve such accidents, and provides the user with emergency contact information when accidents arise with respect to fire and electricity and telecommunications failures in order to resolve such accidents; Computer application software for smart phones, namely, software that tracks the location of the smart phone user in the event of accidents relating to electricity, fire, and telecommunications and which transmits the accident information to the emergency rescue team so that such accidents can be resolved; Downloadable mobile applications for performing remote diagnostics with respect to accidents involving fire and electricity and telecommunications failures in order to resolve such accidents, and providing the user with emergency contact information when accidents arise with respect to fire and electricity and telecommunications failures in order to resolve such accidents; Operating system programs; Computer application software for mobile phones, namely, software that tracks the location of the smart phone user in the event of accidents relating to electricity, fire, and telecommunications and which transmits the accident information to the emergency rescue team so that such accidents can be resolved; Downloadable computer software that is compatible with a smart phone that performs remote diagnostics with respect to accidents involving fire and electricity and telecommunications failures in order to resolve such accidents, and provides the user with emergency contact information when accidents arise with respect to fire and electricity and telecommunications failures in order to resolve such accidents; Computer firmware that is compatible with a smart phone that performs remote diagnostics with respect to accidents involving fire and electricity and telecommunications failures in order to resolve such accidents, and provides the user with emergency contact information when accidents arise with respect to fire and electricity and telecommunications failures, to resolve such accidents; Data processing apparatus; Digital signal processors; Interfaces for computers; Personal digital assistants (PDA), Computers; Communications computers; Blank CD-ROMs for sound or video recording, USB memories, namely, blank USB cards, blank USB flash drives; Chipcards; Disc memories; Smart phones. Development of data processing programs by order of third parties; Programming of multimedia applications; Web site development for others; Web site management for others; Rental of application software; Computer software development; Updating of computer software; Computer software research; Computer programming; Data conversion of computer programs and data, not physical conversion; Product safety testing of gas apparatus.


Mun S.-W.,Daewon Electrical Corporation | Kim J.-S.,Daewon Electrical Corporation | Kim D.-Y.,Daewon Electrical Corporation | Park Y.-B.,Daewon Electrical Corporation
Transactions of the Korean Institute of Electrical Engineers | Year: 2013

In this paper, we compared and analyzed for safety 1.2m rectangular anchor block and arch-type root anchor block. First, numerical analysis was performed three-dimensional nonlinear method by numerical model test using finite element analysis program "Visual FEA". Then, measure displacement of the surface of the earth after construct each anchor block at 14M electric pole and increase loads through field verification tests for safety evaluation.

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