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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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This paper describes the concepts of Static Line Rating (SLR) and Dynamic Line Rating (DLR) and the computational methods to demonstrate them. Calculation of the line capacity needs the heat balance equation which is also used for computing the reduced tension in terms of line aging. SLR is calculated with the data from the worst condition of weather throughout the year. Even now, the utilization ratio is obtained from this SLR data in Korea.
DLR is the improved method compared to SLR. A process for DLR reveals not only improved line ratings but also more accurate allowed line ratings based on line aging and real time conditions of weather. In order to reflect overhead transmission line aging in DLR, this paper proposes the method that considers the amount of decreased tension since the lines have been installed. Therefore, the continuous allowed temperature for remaining life time is newly acquired.
In order to forecast DLR, this paper uses weather forecast models, and applies the concept of Thermal Overload Risk Probability (TORP). Then, the new concept of Dynamic Utilization Ratio (DUR) is defined, replacing Static Utilization Ratio (SUR).
For the case study, the two main transmission lines which are responsible for the north bound power flow in the Seoul metropolitan area are chosen for computing line rating and utilization ratio. And then line rating and utilization ratio are analyzed for each transmission line, so that comparison of the present and estimated utilization ratios becomes available. Finally, this paper proves the validity of predictive DUR as the objective index, with simulations of emergency state caused by system outages, overload and so on.
DLR is the improved method compared to SLR. A process for DLR reveals not only improved line ratings but also more accurate allowed line ratings based on line aging and real time conditions of weather. In order to reflect overhead transmission line aging in DLR, this paper proposes the method that considers the amount of decreased tension since the lines have been installed. Therefore, the continuous allowed temperature for remaining life time is newly acquired.
In order to forecast DLR, this paper uses weather forecast models, and applies the concept of Thermal Overload Risk Probability (TORP). Then, the new concept of Dynamic Utilization Ratio (DUR) is defined, replacing Static Utilization Ratio (SUR).
For the case study, the two main transmission lines which are responsible for the north bound power flow in the Seoul metropolitan area are chosen for computing line rating and utilization ratio. And then line rating and utilization ratio are analyzed for each transmission line, so that comparison of the present and estimated utilization ratios becomes available. Finally, this paper proves the validity of predictive DUR as the objective index, with simulations of emergency state caused by system outages, overload and so on.
목차
Abstract
1. 서론
2. 열평형 방정식과 송전 용량
3. 선로 이용률
4. 사례 연구
5. 결론
감사의 글
참고문헌
저자소개
참고문헌 (11)
참고문헌 신청
[학술지(정기간행물)] - A. Chakrabarti / 1989. / Operating problems in longitudinal power supply systems 22-24 : 932 ~ 935
[학술지(정기간행물)] - 한전 전력연구원 / 2001.5 / ^송전설계기준 제개정 및 보완연구 : 207 ~
[학술지(정기간행물)] - D.A. Douglass / 1996 / Real-time monitoring and dynamic thermal rating of power transmission circuits 11 (3) : 1407 ~ 1418
[학술지(정기간행물)] - T.O. Seppa / 2002. / Increasing transmission capacity by real time monitoring 2 : 1208 ~ 1211
[학술지(정기간행물)] - null / 1993. / IEEE Standard for Calculating the Current- Temperature Relationship of Bare Overhead Conductors 738
[학술지(정기간행물)] - 한전 전력연구원 / 2001.5 / ^송전설계기준 제개정 및 보완연구 : 207 ~
[학술지(정기간행물)] - D.A. Douglass / 1996 / Real-time monitoring and dynamic thermal rating of power transmission circuits 11 (3) : 1407 ~ 1418
[학술지(정기간행물)] - T.O. Seppa / 2002. / Increasing transmission capacity by real time monitoring 2 : 1208 ~ 1211
[학술지(정기간행물)] - null / 1993. / IEEE Standard for Calculating the Current- Temperature Relationship of Bare Overhead Conductors 738
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