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DTS를 활용한 광복합 지중 배전계통 실시간 감시시스템 개발 및 성능평가
조진태(Jin-Tae Cho),김주용(Ju-Yong Kim),이학주(Hak-Ju Lee),조휘창(Hwi-Chang Cho),최명호(Myeong-Ho Choi) 한국조명·전기설비학회 2011 조명·전기설비학회논문지 Vol.25 No.6
Intelligent distribution equipment is inevitable to realize self-healing which is one of smart grid functions in distribution network. Therefore, most of distribution equipment have been developed with self diagnostic sensors. However, it is not effective to construct on-line monitoring system for underground distribution cable because of high cost and low sensitivity. Recently, optical fiber composite cable is being considered for communication and power delivery in order to cope with increasing communication in distribution network. This paper presents the design and performance assessment results of underground cable on-line monitoring system using DTS(Distributed Temperature Sensing) and optical fiber composite underground cable.
지중 배전계통 적용을 위한 광복합 케이블 실시간 감시시스템 개선
조진태(Jin-Tae Cho),김주용(Ju-Yong Kim),이학주(Hak-Ju Lee),박중성(Jung-Sung Park) 한국조명·전기설비학회 2012 조명·전기설비학회논문지 Vol.26 No.7
Since power system is switching to smart grid, on-line monitoring technology has become necessary for underground distribution power cable. Therefore, the application of DTS(Distributed Temperature Sensing) technology using OFCPC(Optical Fiber Composite Power Cable) capable of monitoring underground distribution power cables has been developed. These can bring about reductions in faults and increases in operating capacity of underground distribution system. To date, the test-bed of optical fiber composite power cable on-line monitoring system has been constructed. Then, matters to be improved have been drawn through verification experiments. This paper presents the improvement and experiment results of the optical fiber composite power cable on-line monitoring system to apply to underground distribution lines in the field.
조진태(Jin-Tae Cho),김주용(Ju-Yong Kim),이학주(Hak-Ju Lee),김재한(Jae-Han Kim) 한국조명·전기설비학회 2013 조명·전기설비학회논문지 Vol.27 No.9
Power distribution system has been changed from radial system to closed loop or mesh system due to connection of distributed generation growth. Data from distribution equipments which are installed at distribution line is required to be accurate for the performance of DMS(Distribution Management System). This paper analyzes the voltage measurement data from distribution equipment. However, the results of the analysis are confirmed to have some errors in voltage measurement data from distribution equipment. These errors come from aging of voltage sensor in distribution equipment and inaccurate data transfer to FRTU(feeder remote terminal unit) through the controller. The main problem is that the voltage measurement data of distribution equipment can not be assessed after its first installation at the distribution line. The voltage measurement accuracy assessment system is to assess the voltage measurement data from distribution equipment on hot-line. This study had a field test to verify the performance of system.