• Proceedings of the KIPE Conference
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• 2003.11a
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• pp.159-162
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• 2003

한국전력공사에서는 전압원 인버터형 FACTS 기기인 UPFC를 전남 강진군 강진변전소에 설치하였다. 강진 UPFC는 한전과 (주)효성이 공동으로 투자하고, 지멘스와의 기술제휴를 통해 개발하였으며, 40MVA 병렬인버터, 40MVA 직렬인버터로 구성되어 총 80MVA 용량이다. 강진 UPFC는 GTO를 이용한 3레벨 인버터 모듈 20MVA 총 4대로 구성되어 있으며, STATCOM, SSSC, UPFC의 3가지 운전모드를 갖는다. 현재 병렬인버터는 강진 모선전압 제어, 직렬인버터는 강진-장흥간의 조류제어에 기여하며, 상용운전 중이다. 본 논문에서는 강진 UPFC 커미셔닝 및 그 운전 결과를 소개하였다.

• KIEAE Journal
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• v.13 no.2
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• pp.93-100
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• 2013

Many countries have made their best to protect the earth from global warming and to find solutions for the reduction of carbon dioxide emittion and energy consumption. Especially, buildings have emitted over 40% of carbon dioxide against whole quantities emitted to the earth. Therefore, the reduction of carbon dioxide emitted from buildings require to save the earth environment. Energy consumption of buildings in Korea has reached 24% of total energy quantities, and energy consumption of collective housing has been continuously increasing. So, Korea government has also executed the Green Building Certification Criteria(GBCC). The GBCC evaluates the 8 types of buildings - collective housing, office, school, etc - to certificate the green building. In this paper, the evaluation items of collective housing in GBCC were reviewed to be used as the reference data for future revisions by the case studies. According to the results of this study, current version of GBCC requires additional revisions about the evaluations of energy consumption monitoring, commissioning and existing building.

• Journal of Drive and Control
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• v.9 no.2
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• pp.46-53
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• 2012

This paper explains how eliminating contamination from the manufacturing processes will lead to better product quality and hence the need for reworking, a trouble free commissioning period and greatly improved production efficiency. All of these will reduce costs and energy usage. It will also ensure that the product is delivered to the customer in a condition that will ensure improved reliability and longer life, again reducing both energy and other operating costs. Correctly designing the contamination control measures will achieve and maintain the level of fluid cleanliness that is required by the end user. The filter is critical to cleanliness management and should be selected with the same degree of thought and consideration as for other major components. This paper explains the role that Cleanliness Management plays in the reducing the carbon footprint of systems and processes by making them perform more efficiently for longer periods. It also examines two differing ways of selecting filters to incorporate the features of newer designs, and shows how significant savings in the costs of ownership can be achieved using these approaches.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2003.11a
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• pp.1026-1031
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• 2003

A vibration isolation system fur a large reverberation chamber (1,228㎥, 1,000ton) has been installed. The reverberation chamber generates loud noise and induces high level of vibration to perform spacecraft acoustic environmental tests. The isolation system prevents vibration transfer from the chamber to enclosure buildings. This paper describes logical design process and commissioning experiments of the system. Design criteria have been induced from rigid body model of the chamber. Finite element model has been employed to select the characteristics of rubber pads. A total of 21 rubber pads have been installed between the chamber and supporting pedestals. A sand bag of 800kg was dropped on the chamber floor to measure the natural frequency of the isolation system. Absolute transmissibility has been measured while generating 145㏈ in the chamber. The natural frequency of the chamber is 10.5㎐, which is 80% of estimated value. Overall transmissibility at working frequency range (25㎐-10,000㎐) is less than -6㏈.

• 한국신재생에너지학회:학술대회논문집
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• 2008.10a
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• pp.138-141
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• 2008

The 120t/d pyrolysis commercial plant for waste tire recycling have been constructed in Malaysia and is going to be operated. The plant have the tube reactor with chain conveyer attached disk developed in demonstration research stage. The reactor temperature for commercial plant is about 500deg.C and reactor inside pressure is -100$\sim$-120mmHg. Non-condensable gas is used as fuel for pyrolysis heat source, and the exhausted heat is recovered for cogeneration to produce steam and electric power of 600kw.

• Proceedings of the Korean Vacuum Society Conference
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• 2012.02a
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• pp.527-527
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• 2012

In the Pohang Light Source (PLS), a major upgrade (PLS-II) of existing machine had been performed in last 3 years. Big improvements in beam parameters are expected from this major upgrade and various diagnostic instruments were installed to measure them. These include beam position monitor, beam current monitor, tune monitor, scraper, beam loss monitor, photon beam monitor, beam size monitor, streak camera, and so on. In this work, we would like to briefly introduce diagnostic instruments of the PLS-II and present measurement results in the commissioning process of the PLS-II.

• Proceedings of the KIEE Conference
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• 1998.07e
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• pp.1611-1613
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• 1998

The new type of prefabricated joint for 161kV XLPE cable have been developed. we, LG Cable & Machinery Ltd., made an huge contract with an foreign country's Power company for the supply of cable and accessories, the training of jointing and termination work to local personnel, technical assistance by joint venture and the supervision of installation and commissioning. By the end of 1997, one of several routes under the contract successfully finished being constructed and specially tested on site. In operation, now this underground transmission line proves well the reliability and efficiency of prefabricated joint and termination applied first time in foreign country.

• 유체기계공업학회:학술대회논문집
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• 2004.12a
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• pp.665-672
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• 2004

Chemical cleaning of boiler pipelines is necessary before the commissioning of thermal power plant after many years of construction. Fluid-Dynamic study for the chemical cleaning of boiler piplelines in Young-Heung thermal power plant is carried out. First, flow velocity necessary to sustain and exhaust solid particles in the vertical pipelines is calculated. Second, the flowrate necessary to make the calculated velocities in each vertical pipelines is calculated. Third, all the pipelines are analyzed with the Piping Systems Fluid Flow software to calculated the pressure loss in the pipelines. Finally, the operating point of the applied pump is calculated with the help of the same software.

• Proceedings of the KSR Conference
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• 2009.05a
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• pp.1480-1483
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• 2009

The KNR wayside and onboard subsystem has completed commissioning tests applicable to the Pilot Line section by BOMBARDIER. Andreas Hardt/Assessor and Rod Muttram/VP, Quality & safety approved the Automatic Train Protection(ATP) System. However additional evidences are necessary to come to a Specific Application, which is mandatory to approve the Generic Applications included for commercial running on the overall main line railway with ATP. According to Factory Acceptance Test plan, CBC, CBF, LEU(Line Electronic Unit) made by domestic factory is tested by official recognition test Standards-Setting Agency. It is important to verify quality which form checklist during Factory Acceptance Test. In this paper, review the process, test item, norm and checklist for the CBC, CBF, LEU.

• Proceedings of the SAREK Conference
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• 2007.06a
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• pp.44-44
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• 2007