• 한국철도학회논문집
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• 제9권2호
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• pp.237-243
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• 2006

Deicing system is to melt frost or ice freezed in catenary line when the temperature is lower than $0^{\circ}C$ in winter. The principle of deicing system is to melt frost or ice by Joule heat of catenary impedance. The performance of deicing is dependant of deicing current determined by the length of deicing section, deicing impedance and current division ratio of catenary line and messenger line. So, we present technique for estimating deicing current and process for determination of deicing section in the conventional line. Deicing impedance is estimated using Carson-Pollaczek equation, and current division ratio of catenary line and messenger line is estimated using voltage drop, and deicing current is estimated using power system data of deicing system. For the determination of the final deicing section, we verified estimated value comparing with experiment value of deicing impedance and current division ratio of catenary line and messenger line using low voltage experiment. Finally, we verified the validity of estimation technique and process using a simulated test data of real deicing system operation in the Chungju Substation, Chungbuk line.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2005년도 추계학술대회 논문집 전기기기 및 에너지변환시스템부문
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• pp.288-290
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• 2005

Deicing system operated in high speed line is to melt frost or ice freezed in catenary line when the temperature is lower than 0 in winter. The principle of deicing system is to m디t frost or ice by Joule heat of catenary impedance. The performance of deicing is dependant of deicing current determined by the length of deicing section, deicing impedance and current division ratio of catenary line and messenger line. So, We present technique for estimating deicing current in convention line. Deicing impedance is estimated using Carson - Pollaczek, current division ratio of catenary line and messenger line is estimated using voltage drop, and deicing current is estimated using power system data of operation secion for deicing system in this technique. To verify the validity of technique, we compare the estimated current using technique of this paper with deicng current of high speed line.

• 조명전기설비학회논문지
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• 제17권3호
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• pp.95-102
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• 2003

전선착설로 인한 전력설비에의 피해를 방지하기 위하여, 전선착설을 예측하고 적절한 전선착설 방지대책을 제시하는 것은, 전선착설로 인한 피해 발생의 가능성과 전력계통의 안정적 운영의 양 측면을 동시에 고려하여야 하기 때문에 고도한 판단과 결단이 필요한 문제로써, 지식공학적 수법을 적용하는 것이 매우 효과적인 분야이다. 이에 따라, 전선착설의 예측과 방지대책 수립에 관련된 경험적 지식을 지식베이스화하여 전문가 시스템을 구축하고, 사례 데이터를 이용한 시뮬레이션을 통하여 제안 기법의 유효성을 확인하였다.