• 제목/요약/키워드: Field test

검색결과 9,524건 처리시간 0.034초

종자의 발아시험방법과 포장출현과의 관계 (Studies on the Relationship of the Seed Germination Testing Methods to the Field Emergence.)

  • 전우방
    • 아시안잔디학회지
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    • 제3권1호
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    • pp.13-15
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    • 1989
  • In oder to find out the effective seed germination testing method to the field emergence, an experiment was conducted ; 1. TTC testing results were higher percentage than any other germination testing methods . 2. On the corn seed , field emergence was highly correlated with germinator test, TTC test and AA test hut cold test was lower percentage . 3. Field emergence , on the soybean seeds was highly correlated with AA test and cold test but germinator test and TTC test was higher percentage .

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전동차용 IGBT형 추진제어장치의 본선시험에 관한 연구 (A Study On Field Test of IGBT Type Propulsion System for Electric Locomotive)

  • 박건태
    • 전력전자학회:학술대회논문집
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    • 전력전자학회 2000년도 전력전자학술대회 논문집
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    • pp.576-580
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    • 2000
  • This paper describes about the field test of IGBT VVVF inverter for the propulsion system. The 1650kV class IGBT VVVF inverter has been developed. Therefore the field test is performed in SMG 6 Line to confirm its the reliability and performance. The train consists of 4M4T and the electrical equipment for field test are as follows : VVVF inverter 4 sets 16 traction motors and 3 SIVs The propulsion system which have the excellent acceleration/deceleration and the jerk chracteristics as well as starting ability on slope are taken through the field test.

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숏크리트 타설시험기 개발 및 적용성 검토 (The Study on Development and Applicability of Shotcrete Shotting Test Machine)

  • 강은구;마상준
    • 한국지반공학회:학술대회논문집
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    • 한국지반공학회 2010년도 추계 학술발표회
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    • pp.1333-1342
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    • 2010
  • It required excessive cost and effort to evaluate the quality of shotcrete mix for field test. Also, due to a myriad of field variables, it is difficult to get a standardized result for field test. And it is impossible to simulate the shotting process for indoor test. In this study, in order to overcome these problems, we developed a standardized Shotcrete Shotting Test Machine. Using this machine we performed shotcrete quality test and estimated the applicability of developed Shotcrete Shotting Test Machine by comparing with the results of field test.

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증속기 현장시험 국내 적용 사례 및 절차 분석 (Domestic Application and Procedure Analysis of Gearbox Field Test)

  • 이광세;강민상;김석우;이진재
    • 신재생에너지
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    • 제16권4호
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    • pp.23-32
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    • 2020
  • The wind turbine gearbox has the longest downtime among other major turbine components such as blades, generators, and main bearings. Therefore, gearbox manufacturers conduct rig tests to evaluate conformity in terms of design and function. Rig tests, however, have limited similarity compared with atmospheric wind turbine operating conditions. Rig test conditions are thoroughly controlled and maintained by testers and the component certificates of gearboxes issued through the test cannot fulfill wind farm operator's requirements. Hence, certification bodies such as DNV-GL and UL require a mandatory gearbox field test report for type certification. The Korea Energy Agency (KEA) also introduced gearbox field test as a part of the KS type certificate in 2016, although it is optional . In this paper, gearbox field test procedures and requirements are introduced, and the first domestic application case of the test is reported. The field test was conducted with a 1.5 MW wind turbine gearbox located in Jeju as the test object.

연약지반에 대한 현장시험 적용에 관한 연구 (A STUDY ON THE APPLICATION OF FIELD TESTS TO WEAK GROUND)

  • 이승래;정한중;김준석
    • 한국지반공학회:학술대회논문집
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    • 한국지반공학회 1992년도 가을학술발표회 논문집
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    • pp.145-148
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    • 1992
  • This paper reports the application of field tests to weak ground. In this study, field and laboratory tests were performed in the west seashore of KOREA(Ildo, Sore, Kunsan, Youngam). Applied tests are standard penetration test, cone penetration test, dilatometer test, field vane test, unconsolidated undrained test, oedometer test and other fundametal material properties tests. The results of in-situ test are used to estimate soil types and undrained shear strengths of five clay local deposits. SPT results showed low reliability and FVT war also demonstrated the best field test to weak clayey deposits.

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실증시험을 통한 지중배전선로 모델링 기법 검증 연구 (Verification of Underground Distribution Line Modeling with Field Test)

  • 윤창섭;이재봉;김병숙;이종범
    • 전기학회논문지
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    • 제56권12호
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    • pp.2091-2097
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    • 2007
  • This paper described the verification of modeling technique of underground distribution from comparison between field test and simulation. It needs more exact transient phenomenon analysis model to establish lightning protection of underground distribution line. Although, there were a lot of transient phenomenon researches, nobody could has verified the confidence of modeling from field tests in interior until now. So, simulation model verified field test is needed to analyse transient phenomenon of underground distribution system. The examination must be accomplished in many different condition before suggesting these verified analysis model. In this paper, the conditions were examined and the various data results on the different line composition was compared with the EMTP simulation, when the lightning impulse test was accomplished at underground distribution line. Also the value between field test and simulation was very closed and the method of modeling has demonstrated confidence, when the method is used to analyse domestic transient phenomenon of underground distribution.

저압 지중케이블 고장 위치 검출 실증 시험장 설계 및 구축 (Design and Construction of Test Field for Low Voltage Under Cable Fault Location Detection)

  • 오훈
    • 한국산학기술학회논문지
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    • 제16권10호
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    • pp.6666-6672
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    • 2015
  • 전력 케이블의 고장에 대한 위치를 검출하기 위한 다양한 반사파 계측법들이 연구되고 있다. 하지만 대부분 관련 연구들이 시뮬레이션과 실험실에서의 성능 검증이 이루어지고 있고, 실제 현장과 비슷한 조건에서의 연구는 실증 시험장의 부재로 인해 이루어지지 못하고 있다. 따라서 본 논문에서는 케이블 고장 검출 장치의 표준화된 성능 시험과, 장비 운영 교육을 위한 실증 시험장을 설계 및 구축하였다. 구축된 실증시험장에서는 100m, 200m 거리에서 단선, 합선, 반단선, 접촉 불량 고장을 발생시켰고 최대 거리 측정 시험을 위해 1km 케이블을 설치하였다. 이러한 실증시험장은 향후 케이블 고장 검출 기술의 개발과 표준화, 그리고 장비 성능 검증 및 인증 시험 등을 위해 활용될 수 있을 것이다.

실차 시험을 통한 ER 현가장치의 성능평가 (Rerformance Evaluation of ER Suspensions Under Field Test)

  • 이헌균;최승복;한승직;장유진;이성범
    • 대한기계학회논문집A
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    • 제24권2호
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    • pp.347-354
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    • 2000
  • This paper presents performance characteristics of a semi-active suspension featuring continuously variable ER (electro-rheological) dampers. These are evaluated through the field test of a passeng er car. Four ER dampers (two for front and two for rear part) are manufactured and their field-dependent damping properties are experimentally investigated. The damping force responses to step input fields are also identified by employing small size of high voltage amplifiers which are made adaptable to the field test. A skyhook controller considering the vertical, pitch and roll motions is formulated and incorporated with a car to be tested. The field test is then undertaken in order to evaluate both comfortability and steering stability showing bump, dive and squat responses.

A Practical Power System Stabilizer Tuning Method and its Verification in Field Test

  • Shin, Jeong-Hoon;Nam, Su-Chul;Lee, Jae-Gul;Baek, Seung-Mook;Choy, Young-Do;Kim, Tae-Kyun
    • Journal of Electrical Engineering and Technology
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    • 제5권3호
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    • pp.400-406
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    • 2010
  • This paper deals with parameter tuning of the Power System Stabilizer (PSS) for 612 MVA thermal power plants in the KEPCO system and its validation in a field test. In this paper, the selection of parameters, such as lead-lag time constants for phase compensation and system gain, is optimized using linear and eigenvalue analyses. This is then verified through the time-domain transient stability analysis. In the next step, the performance of PSS is finally verified by the generator's on-line field test. After the field test, measured and simulated data are also compared to prove the effectiveness of the models used in the simulations.

실측 동적물성을 이용한 기존 사력댐의 동적거동분석 (Dynamic Analysis of Existing Rockfill Dam Using Dynamic Properties by Field Test and Geophysical Exploration)

  • 이종욱;오병현
    • 한국지반공학회:학술대회논문집
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    • 한국지반공학회 2005년도 지반공학 공동 학술발표회
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    • pp.306-313
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    • 2005
  • For seismic response analysis of rockfill dam, dynamic material properties, by field test, are needed. Density and elastic wave profiles have to be known to get an information of the material properties of structure. In this study, various field tests are applied to the example of rockfill dam to get an information of dynamic material properties and seismic safety is evaluated by seismic response analysis with the result of field tests.

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