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원전용 600V 차폐 꼬임쌍선 케이블의 국부열화에 대한 전기적/기계적 진단
박명구,김광호,임찬우,김태윤,김현수,채장범,김병성,나완수,Park, Myeongkoo,Kim, Kwangho,Lim, Chanwoo,Kim, TaeYoon,Kim, Hyunsu,Chai, Jangbom,Kim, Byungsung,Nah, Wansoo 대한전기학회 2017 전기학회논문지 Vol.66 No.1
In this paper, we propose a electrical/mechanical method to effectively diagnose the local deterioration of a 10m long power shielded twist pair cable defined by the American Wire Gauge (AWG) 14 specification using electrical/mechanical methods. The rapid deterioration of the cable proceeded by using the heating furnace, which is based on the Arrhenius equations proceeds from 0 to 35 years with the deteriorated equivalent model. In this paper, we introduce a method to diagnose the characteristics of locally deteriorated cable by using $S_{21}$ phase and frequency change rate measured by vector network analyzer which is the electrical diagnostic method. The measured $S_{21}$ phase and rate of change of frequency show a constant correlation with the number of years of locally deteriorated cable, thus it can be useful for diagnosing deteriorated cables. The change of modulus due to deterioration was measured by a modulus measuring device, which is defined by the ratio of deformation from the force externally applied to the cable, and the rate of modulus change also shows a constant correlation with the number of years of locally deteriorated cable. Finally, By combining the advantages of electrical/mechanical diagnostic methods, we can efficiently diagnose the local deterioration in the power shielded cable.
정준기(Junki Jung),임찬우(Chanwoo Lim),김국렬(Kukryul Kim),이태연(Taeyeon Lee),채장범(Jungbom Chai) 한국소음진동공학회 2015 한국소음진동공학회 학술대회논문집 Vol.2015 No.4
Recently, safety of a nuclear power plant is a big issue. In this paper, the simulation model of the reciprocating pump used in NPP was developed to diagnose defects in early stage. Four operating modes of the reciprocating pump are considered : Expansion, Suction, Compression and Discharge. In each mode, mathematical equation to relate the measurable state and internal states were formulated. With the model, normal signatures and defected signatures are simulated and analysed to identify the effects of the defects. The simulated result was compared to the experimental data, by which te validation of the mode was performable.
원전용 600V 차폐 꼬임쌍선 케이블의 국부열화에 대한 전기적/기계적 진단
박명구(Myeongkoo Park),김광호(Kwangho Kim),임찬우(Chanwoo Lim),김태윤(TaeYoon Kim),김현수(Hyunsu Kim),채장범(Jangbom Chai),김병성(Byungsung Kim),나완수(Wansoo Nah) 대한전기학회 2017 전기학회논문지 Vol.66 No.2
In this paper, we propose a electrical/mechanical method to effectively diagnose the local deterioration of a 10m long power shielded twist pair cable defined by the American Wire Gauge (AWG) 14 specification using electrical/mechanical methods. The rapid deterioration of the cable proceeded by using the heating furnace, which is based on the Arrhenius equations proceeds from 0 to 35 years with the deteriorated equivalent model. In this paper, we introduce a method to diagnose the characteristics of locally deteriorated cable by using S21 phase and frequency change rate measured by vector network analyzer which is the electrical diagnostic method. The measured S21 phase and rate of change of frequency show a constant correlation with the number of years of locally deteriorated cable, thus it can be useful for diagnosing deteriorated cables. The change of modulus due to deterioration was measured by a modulus measuring device, which is defined by the ratio of deformation from the force externally applied to the cable, and the rate of modulus change also shows a constant correlation with the number of years of locally deteriorated cable. Finally, By combining the advantages of electrical/mechanical diagnostic methods, we can efficiently diagnose the local deterioration in the power shielded cable.