Application Methodology for 22.9 kV HTS Cable in Metropolitan City of South Korea

Yoon, Jae-Young; Lee, Seung Ryul; Kim, Jong Yul

doi:10.1109/tasc.2007.898386

Cited by 23 publications

(10 citation statements)

References 1 publication

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“…As is the trend around major cities in the world, Seoul has an ever increasing energy demand coupled with poor investment in power infrastructure. The route length per MW demand is likely to diminish from the current 0.6 to 0.53 C-km/MW in 2010 [15].…”

Section: B 229kv Hts Cable In Metro City Of South Koreamentioning

confidence: 99%

“…New improvements in the HTS cable design that provides massive power transfer for short distances may be the answer for power network system planning and operating predicaments [15].…”

Section: B 229kv Hts Cable In Metro City Of South Koreamentioning

confidence: 99%

“…Young et al [15] predicted a rise in the order of 4 to 5% annually in power demand. This demand has been experienced by South Koreans in the year 2010 where the maximum demand was predicted to exceed 67GW.…”

Section: B 229kv Hts Cable In Metro City Of South Koreamentioning

confidence: 99%

“…4 demonstrates the country's 154kV underground cable route length versus procession rate; notably the rate will increase dramatically from 6.8% to 11.6% and Young et al [15] expected the rate to hit 13.4% by 2020. Route length of 154kV underground cable versus procession rate [15] Other issues that affect the need for deploying HTS cable include: limited transmission capacity of existing distribution lines; the congested underground easement with many utility's assets; the burden of constructing new cable in the jam-packed cities which mean disruption to traffic and public areas, and rapid increase in general power supply's cost to accommodate for laying new cable. This case study has identified some general benefits of utilising HTS cable in the city centre for the overall power network [15].…”

Section: B 229kv Hts Cable In Metro City Of South Koreamentioning

confidence: 99%

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Performance analysis of HTS cables with variable load demand

Al-Khalidi¹,

Hadbah

Kalam

2011

2011 IEEE PES Innovative Smart Grid Technologies

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Currently, most of the transmission line infrastructure are being considered for an overhaul due to aging, detrition and overloaded. In light of this, the authors believe it is a good time for investing in a new technology so that the network can truly meet most of the challenges.High Temperature Superconductive (HTS) cable has a unique characteristic of low impedance to current flow. Unlike conventional power cables, HTS cable offers higher power transfer with minimum losses and more compact design of power applications yet better power flow absorption in the networks at the same voltage levels.In attempts to closely study the effect of HTS cable on power networks, several pilot projects have been carried out around the world. Promising results are achieved in terms of cable capacity and reliability. However, the big challenge of this technology is the high cost of superconductive materials in addition to the cost associated with cooling the cable, which is required at its normal operation temperature (-208ºC for present HTS cables). A new cable was developed by Ultera, utilises the cryogenic electrical insulator, together with high-reliable cable cooling technology that aims at a long service life, have significantly reduced the cost of HTS cable technology. The future will witness further reduction in the cost of HTS cable, certainly when industry scale production commences. This paper will present the technology in HTS cable and its anticipated effects on power transmission networks.For the last few decades power transmission for long distance was only possible with extra high voltage. However the transmission network required huge investment in high voltage equipment and switch-gear, yet it came with big electrical transmission losses. Fast growing cities and deregulation of the electrical sector in many countries around the world resulted in overwhelming demand for more power [1]. So far, the focus of the Australian electricity market has been narrowed onto the generation part of the power network, directing much of power investment into the new way of generation and renewable energy technology. This leaves the transmission part of the network with the burden of ageing and overloading to face reliability challenges in spite of this HTS cables have the potential for increasing power transmission capacity. Therefore, by transferring a larger amount of generated power that normally is lost in conventional power transmission cables, less generation is then required for the existing load [2]. Subsequent section of this paper describes in detail the obtained results from the load flow analysis performed on the hybrid sub-model, where four lengths This work was supported in part by Energy Safe Victoria. H. Al-Khalidi is with Sp-Ausnet, of HTS cable are employed in conjunction with the conventional Cross Linked Polyethylene (XLPE) cable. The employment enabled a comparison to be drawn on the performance and impact of the HTS cable on a local Victorian distribution company Citipower network. West Melbourne Terminati...

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Section: B 229kv Hts Cable In Metro City Of South Koreamentioning

confidence: 99%

“…New improvements in the HTS cable design that provides massive power transfer for short distances may be the answer for power network system planning and operating predicaments [15].…”

Section: B 229kv Hts Cable In Metro City Of South Koreamentioning

confidence: 99%

Section: B 229kv Hts Cable In Metro City Of South Koreamentioning

confidence: 99%

Section: B 229kv Hts Cable In Metro City Of South Koreamentioning

confidence: 99%

See 2 more Smart Citations

Performance analysis of HTS cables with variable load demand

Al-Khalidi¹,

Hadbah

Kalam

2011

2011 IEEE PES Innovative Smart Grid Technologies

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“…The uses of HTS cables in HVDC transmission systems have been presented in [6][7][8]. In urban areas where land availability is limited, the HTS cable can replace the traditional high voltage transmission system to supply power for the urban load [9][10][11]. Since the applications of HTS cables in power systems have been increased significantly, fault analysis and designing the protection system of HTS cables are essential to ensure the stability and reliability of power systems.…”

Section: Introductionmentioning

confidence: 99%

Fault Analysis and Design of a Protection System for a Mesh Power System with a Co-Axial HTS Power Cable

et al. 2020

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The uses of high-temperature superconducting (HTS) cables pose a challenge of power system protection since the impedance of the HTS cable is varied during fault conditions. The protection systems should be designed properly to ensure the reliability and stability of the whole system. This paper presents a fault analysis of the co-axial HTS cable in the mesh system and proposes a coordinated protection system. In the proposed protection system, the main protection is the differential current relay whereas the backup protections are the overcurrent and directional overcurrent relays. The normal and abnormal relay operations are considered to analyze the transient fault current in the HTS cable and evaluate the performance of the proposed coordinated protection system. Characteristics of cable impedances and temperatures under various fault conditions are presented. The proposed protection scheme is validated by the simulation in the PSCAD/EMTDC program. Simulation results show that the coordinated protection scheme could successfully protect the HTS cables in both normal and abnormal relay operations.

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