• Title/Summary/Keyword: HTS Cable

Search Result 280, Processing Time 0.024 seconds

Methodology for Estimating the HTS Cable Market Price (초전도케이블 시장진입 가격 산정 방법론 고찰)

  • Kim Jong-Yul;Lee Seung-Ryul;Yoon Jae-Young
    • The Transactions of the Korean Institute of Electrical Engineers A
    • /
    • v.53 no.10
    • /
    • pp.536-541
    • /
    • 2004
  • As power demand increases gradually, the call for underground transmission system increases. But it is very difficult and high in cost to construct new ducts and/or tunnels for power cables in metropolitan areas. HTS (High Temperature Superconducting) cable has the several useful characteristics such as increased power density, stronger magnetic fields and/or reduced losses. Therefore HTS cable can allow more power to be moved in existing ducts, which means very large economical and environmental benefits. In these days, companies world-wide have conducted researches on HTS cable. A development project for a 22.9kV class HTS cable is proceeding at a research center and university in Korea. In this paper, we investigate the expected price of HTS cable to have a merit in viewpoint of economic aspect. First, life-cycle cost of conventional cable is calculated and based on this, the expected price of HTS cable is evaluated, which HTS cable is competitive against conventional cable.

Study on the Stability Evaluation of the High-Tc Superconducting Power Cable (고온초전도 전력케이블의 안정도 평가를 위한 교류손실에 관한 연구)

  • Bae, J.H.;Choi, S.J.;Lee, S.J.;Cho, J.W.
    • The Transactions of The Korean Institute of Electrical Engineers
    • /
    • v.56 no.7
    • /
    • pp.1236-1240
    • /
    • 2007
  • In order to evaluate if the high-Tc superconducting(HTS) power cable is operating stably, the characteristics of the HTS power cable should be found out. The properties of HTS tapes by measuring the voltage with respect to the current can be archived. But, the HTS power cable is different from the case of HTS tapes. This method is invalid because of the electromagnetic fields caused by other HTS tapes. In this paper, the stability evaluation of the HTS cable was performed by the following procedure. First, the voltage-current characteristics of HTS tape were measured and the electromagnetic field distributions of the HTS power cable with the external magnetic field were analyzed. Second, the losses of the HTS power cable were calculated using the result of the measurement and the analysis. Finally, the stable operation of the HTS power cable was evaluated on the basis of the losses of the superconducting cable.

Design and Operational Test of 22.9kV, 30m, 3phase HTS Cable Cooling System

  • Kim Do-Hyung;Kim Choon-Dong;Park In-Son;Jang Hyun-Man;Lee Su-Kil
    • Progress in Superconductivity and Cryogenics
    • /
    • v.8 no.2
    • /
    • pp.46-49
    • /
    • 2006
  • The 30m, 3phase, 22.9kV HTS (High Temperature Superconducting) power cable system was produced by LS Cable Ltd. The project aims for a commercial HTS cable. The designing, the manufacturing and the initial operating of HTS cable system were completed by 2004. Then, we have performed a long term operational test since February, 2005. This paper mainly reports the result of the HTS cable cooling operation.

A Economic feasibility of HTS cable by estimating the Life-Cycle cost (Life-cycle 비용 산정을 통한 초전도케이블 경제성 검토)

  • Kim Jong Yul;Lee Seong Ryul;Yoon Jae Young
    • Proceedings of the KIEE Conference
    • /
    • summer
    • /
    • pp.424-426
    • /
    • 2004
  • As power demand increases gradually, the call for underground transmission system increases. But it is very difficult and high in cost to construct new ducts and/or tunnels for power cables in metropolitan areas. HTS (High Temperature Superconducting) cable has the several useful characteristics such as increased power density, stronger fields and/or reduced losses. Therefore HTS cable can allow more power to be moved in existing ducts, which means very large economical and environmental benefits. In these days, companies world-wide have conducted researches on HTS cable. A development project for a 22.9kV class HTS cable is proceeding at a research center and university in Korea. In this paper, we investigate the expected price of HTS cable to have a merit in viewpoint of economic aspect. First, life-cycle cost of conventional cable is calculated and based on this, the expected price of HTS cable is evaluated, which HTS cable is competitive against conventional cable.

  • PDF

A Electrical Characteristic Simulation and Test for the Steady and Transient State in the 22.9kV HTS Cable Distribution System. (22-9kV배전계통에 대한 초전도케이블의 정상 및 과도상태에 대한 전기적 특성 시험 및 시뮬레이션 결과 검토)

  • Lee, Geun-Joon;Hwnag, Si-Dol;Yang, Byeong-Mo;Lee, Hyun-Chul
    • The Transactions of The Korean Institute of Electrical Engineers
    • /
    • v.58 no.12
    • /
    • pp.2316-2321
    • /
    • 2009
  • With rapid development of world economics, electricity demand in metropolitan area has been increased dramatically. HTS(High Temperature Superconducting) cable is one of most promising technology to solve the bottleneck of electric network. However, HTS cable is not considered as matured technology yet to power system planners because of its different characteristics with conventional metal conductors. This paper suggests the comparison results of HTS cable simulation and experiment on steady state operation, also give the simulation results on transient characteristics of HTS cable components. This results could devote not only to discuss the security of HTS cable operation, but also to design power system oriented HTS cable.

A study result on coordinative protection method of HTS cable implemented distribution system (초전도케이블이 병입된 계통의 고장에 대한 보호협조 검토기법)

  • Lee, Hyun-Chul;Yang, Byeong-Mo;Lee, Geun-Joon
    • The Transactions of The Korean Institute of Electrical Engineers
    • /
    • v.60 no.4
    • /
    • pp.700-704
    • /
    • 2011
  • This paper proposes a coordinative protection study results of 22.9kV HTS(High-Temperature Superconducting) cable implemented distribution system. HTS cable can provide about 5 times larger transfer capacability compare to conventional XLPE cable, however, it has different heat characteristic so called quench. This paper presents the simulation results on Ichun substation HTS cable which connects main transformer and 22.9kV bus. Various expected fault cases are considered and discussed to examine whether conventional protection scheme is effective to protect both of existing facilities and HTS cable. With the results of simulation, conventional protection scheme can be used if instantaneous element and time inverse elements could be adjusted with proper time coordination. Internal temperatures of HTS cable conductor in safe region with proper protection without quench. This results are to be demonstrated by the field test and will be implemented in Ichon substation HTS cable protection and control system.

A Study on the Introduction of Superconducting Cable in Korean Power System (초전도 케이블 계통 적용을 위한 계통 구성 방안 및 적용 대상 고찰)

  • 김종율;윤재영;이승렬
    • Progress in Superconductivity and Cryogenics
    • /
    • v.5 no.2
    • /
    • pp.8-15
    • /
    • 2003
  • Nowadays, As power demand increases gradually, the call for underground transmission system increases. But it is very difficult and high in cost to construct new ducts and/or tunnels for power cables in metropolitan areas. HTS cable has the several useful characteristics such as increased power density, stronger magnetic fields and/or reduced losses. Therefore HTS cable can allow more power to be moved in existing ducts, which means very large economical and environmental benefits. In this paper, we investigate the status of korean power system and underground transmission system. Based on this, the feasibility study on applying HTS cable to korean power system is carried out and then we propose the new power system configuration of metropolitan area with HTS cable. Finally, we can get a conclusion that applying HTS cable to 154kV underground transmission line in metropolitan area such as seoul is very available. In addition, detail applicable cases are investigated; a)replace old conventional cable with HTS cable; b) apply HTS cable to constructing new underground transmission line; c)use HTS cable to resolve overload problem in conventional power system configuration.

Design of 154kV, 1GVA HTS Cable (154kV, 1GVA 초전도케이블 설계)

  • Cho, Jeon-Wook;Sim, Ki-Duck;Kim, Seok-Ho;Lee, Su-Kil;Jang, Hyun-Man;Choi, Chang-Yeol;Lee, Kuen-Tae;Yang, Byeung-Mo;Kim, Seung-Rae
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
    • /
    • 2010.06a
    • /
    • pp.192-192
    • /
    • 2010
  • DAPAS (Development of Advanced Power system by Applied Superconductivity technologies) program that the, superconductivity national program has been started one of the 21C frontier programs from 2001 in Korea. The 3rd phase of DAPAS program was started at April 2007, and the ultimate goal of HTS cable project is to develop 154kV, 1GVA class HTS cable. The structure of 154kV, 1GVA HTS cable is single core with cold dielectric insulation. The cable core consists of the former, conduction layer, electrical insulation layer, shielding layer. The cable cryostat consists of two corrugated seamless aluminum tubes as its high sealing reliability, the tubes separated through a spacer arrangement. Outdoor termination was developed by LS cable and cryogenic system by CVE for 154kV, 1GVA class HTS cable. The 154kV, 1GVA HTS cable will be installed and be tested in KEPCO Gochang Testing Center from June 2010.

  • PDF

Future New Distribution System with Low voltage and Mass Capacity using HTS equipments (초전도기기를 적용한 미래 저압대용량 신 배전계통)

  • Yoon Jae Young;Kim Jong Yul;Lee Seung Ryul
    • Progress in Superconductivity and Cryogenics
    • /
    • v.7 no.1
    • /
    • pp.37-41
    • /
    • 2005
  • This paper describes the construction scheme of new distribution system using HTS(High Temperature Superconducting) power equipments such as cable, transformer and FCL(fault current limiter). At present, one of the most serious problems in distribution power system, especially for metropolitan complex city, is to obtain the ROW for cable line routes, space for downtown substations and satisfy the environmental protection caused by NIMBY phenomena. Unfortunately, it is expected that this situation will get more and more worse. As the HTS technology to apply in power system Is developed, HTS cable utilizing mass-capacity characteristic can be a useful countermeasure to overcome this problem. This paper describes the application methodology of 22.9kV HTS cable with low-voltage, mass-capacity characteristics replacing the 154kV conventional cable. By applying 22.9kV HTS cable, the HTS transformer with higher capacity for the reduction of space and transformer numbers of downtown substation is necessary. Also, if the leakage Impedance of HTS transformer is same as or lower than that of conventional transformer, the fault current of 22.9kV bus will increase because the HTS transformer capacity is larger than that of the conventional transformer. This means the parallel application of HTS-FCL to reduce the fault current in addition to the HTS cable and transformer can be necessary. With the basic construction scheme of new distribution system, this paper describes the future study points to realize this new distribution system using HTS equipments.

Power System Security Control Method for Quench Characteristic of High-Temperature Superconducting Cable (초전도 케이블의 퀜치 특성에 대한 계통안전성 제어방식)

  • Lee, Geun-Joon;Hwang, Si-Dol;Lee, Jeong-Phil;Kim, Chang-Hyun;Park, Hye-Chul
    • Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
    • /
    • 2004.11a
    • /
    • pp.375-380
    • /
    • 2004
  • This paper presents the basic quench protection idea for the HTS(High-Temperature Superconducting) cable. In Korea power system, the transfer capability of transmission line is limited by the voltage stability, and HTS cable could be one of the countermeasure to solve the transfer limit as its higher current capacity and lower impedance[1]. However, the quench characteristic of HTS cable makes HTS cable to loss its superconductivity, and therefore change the impedance of the line and power system operating condition dramatically. This pheonominum threats not only HTS cable safety but also power system security, therefore a proper protection scheme and security control counterplan have to be established before HTS cable implementation. In this paper, the quench characteristics of HTS cable for the fault current based on heat balance equation was established and a proper protection method by FCL(Fault Current Limiter) was suggested.

  • PDF