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Journal articles on the topic 'High Temperature Low Sag (HTLS) conductors'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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1

Mamala, Andrzej, Tadeusz Knych, Beata Smyrak, Paweł Kwaśniewski, Grzegorz Kiesiewicz, Michał Jabłoński, and Wojciech Ściężor. "An Analytical Model for the High Temperature Low Sag Conductor Knee Point Determination." Key Engineering Materials 641 (April 2015): 173–80. http://dx.doi.org/10.4028/www.scientific.net/kem.641.173.

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The modern high voltage power overhead lines operate with high temperature low sag (HTLS) conductors due to possibility of the current capacity increase. HTLS conductors are material and technological advanced solutions. The main advantage of HTLS conductors is a special designed operation conditions which cause the transformation of tensile stresses from the external aluminium base layers to the core. The conditions of this transformation are called “knee point” because a rapid change of the conductor sag - temperature relationship is observed. Prediction of conditions of the “knee point” temperature (KPT) is a key problem during overhead line design. The KPT is a function of different factors like conductor materials properties, conductor design, span parameters, sagging procedures and overhead line exploitation conditions. The paper presents an original theoretical model for HTLS conductors KPT calculations and shows some examples and comparisons of the different conductor designs and parameters.
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2

Reddy B., Subba, and Gaurav Mitra. "Investigations on High Temperature Low Sag (HTLS) Conductors." IEEE Transactions on Power Delivery 35, no. 4 (August 2020): 1716–24. http://dx.doi.org/10.1109/tpwrd.2019.2950992.

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3

Bedialauneta, Miren T., Igor Albizu, Elvira Fernandez, and A. Javier Mazon. "Uncertainties in the Testing of the Coefficient of Thermal Expansion of Overhead Conductors." Energies 13, no. 2 (January 14, 2020): 411. http://dx.doi.org/10.3390/en13020411.

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Overhead lines can be replaced by high temperature low sag (HTLS) conductors in order to increase their capacity. The coefficients of thermal expansion (CTE) of the HTLS conductors are lower than the CTE of conventional conductors. The utilities and conductor manufacturers usually carry out the verification of the CTE of the overhead conductors in an actual size span. The verification is based on the observation of the change of the conductor length as a result of the conductor temperature change. This process is influenced by the coefficient of thermal expansion to be verified. However, there are other factors that also affect it. This paper analyzes the effect of some of the uncertainty sources in the testing of the coefficient of thermal expansion of the overhead conductors. Firstly, the thermal expansion process is described and the uncertainty sources related to the conductor and the line section are identified. Then, the uncertainty sources and their effect on the CTE testing are quantified.
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4

Ippolito, M. G., F. Massaro, and C. Cassaro. "HTLS Conductors: A Way to Optimize RES Generation and to Improve the Competitiveness of the Electrical Market—A Case Study in Sicily." Journal of Electrical and Computer Engineering 2018 (September 6, 2018): 1–10. http://dx.doi.org/10.1155/2018/2073187.

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Stringent environmental constraints make more difficult to identify new energy corridors and build new power lines. The increase in the generation of electricity from renewable energy sources (RESs) makes the operation of electrical systems increasingly difficult in some areas. The transmission system operators (TSOs), in Italy Terna, are forced to exploit the existing overhead transmission lines, increasing the possibility of dispatching energy, in particular RES, optimizing the transmission capacity. Therefore, after a brief presentation of the Sicilian electricity system and a brief description of high-temperature low-sag (HTLS) conductors, a case study is presented. It is shown how it is possible to optimize the dispatching from renewable sources and, finally, it is demonstrated how the use of HTLS conductor can contribute, together with other actions taken by the TSO, to the decrease of the zonal price of electricity, to the creation of a market with fewer constraints and to new operating conditions that increase the resilience of the electricity system in case of disturbances.
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5

Desprianto, Rahmad Yusuf, Suprihadi Prasetyono, and Dedy Kurnia Setiawan. "Studi Perencanaan Upgrade Transmisi Tegangan Tinggi 150 kV Perak-Ujung Menggunakan Konduktor HTLS (High Temeprature-Low Sag)." BERKALA SAINSTEK 5, no. 2 (November 7, 2017): 118. http://dx.doi.org/10.19184/bst.v5i2.5704.

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Saluran transmisi udara 150 kV pada umumnya menggunakan konduktor ACSR (Alumunium Conductor Steel Reinfoiced) yang mempunyai titik kerja suhu yang terbatas. Saluran transmisi udara akan mengalami titik jenuh seiring meningkatnya kebutuhan listrik. Dengan menyempitnya lahan dan masalah investasi maka saluran yang telah ada perlu dioptimalkan dengan melakukan reconductoring menggunakan konduktor HTLS (High Temperature Low Sag). Konduktor HTLS mempunyai titik kerja suhu yang tinggi dibandingkan konduktor ACSR. Penelitian ini bertujuan untuk meningkatkan kapasitas hantar arus serta untuk memenuhi kehandalan N-1 dari saluran transimsi udara dengan memilih konduktor jenis HTLS yang meliputi ACCC, ACCR dan TACSR yang sesuai dengan struktur jaringan transmisi. Dengan menggunakan metode keseimbangan panas dalam menghitung ampacity dan metode cartenary dalam menghitung andongan dan tegangan tarik maka akan diketahui konduktor yang sesuai dengan struktur yang telah ada. Dari hasil penelitian menunjukkan konduktor ACCC jauh lebih handal dengan mampu menaikkan kapasitas hantar arus hingga 96,3 % sedangkan ACCR sebesar 83,9 % dan TACSR sebesar 40,7%. Dan andongan maksimal ACCC sebesar 4,692 m, ACCR sebesar 6,550 m dan TACSR sebesar 8,076 m dengan tegangan tarik yang dibutuhkan pada andongan maksimal berturut-turut sebesar 12,825 kN; 9,086 kN dan 8,119 kN. Kata Kunci: konduktor HTLS, reconductoring, transmisi udara.
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6

Yasaranga, H. B. D., W. D. A. S. Wijayapala, and K. T. M. U. Hemapala. "Techno Economic Analysis of the Use of High Temperature Low Sag (HTLS) Conductors in the Sri Lanka’s Transmission System." Engineer: Journal of the Institution of Engineers, Sri Lanka 50, no. 1 (February 9, 2017): 41. http://dx.doi.org/10.4038/engineer.v50i1.7243.

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7

Reddy, B. Subba, and Diptendu Chatterjee. "Analysis of High Temperature Low Sag Conductors Used for High Voltage Transmission." Energy Procedia 90 (December 2016): 179–84. http://dx.doi.org/10.1016/j.egypro.2016.11.183.

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8

Kwon, Jonghwan, and Kory W. Hedman. "Transmission expansion planning model considering conductor thermal dynamics and high temperature low sag conductors." IET Generation, Transmission & Distribution 9, no. 15 (November 19, 2015): 2311–18. http://dx.doi.org/10.1049/iet-gtd.2015.0257.

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9

Pelacchi, Paolo, and Davide Poli. "Thermo-Mechanical Model of Multi-Span Overhead Transmission Lines Equipped with High-Temperature Low-Sag Conductors." International Review on Modelling and Simulations (IREMOS) 8, no. 3 (June 30, 2015): 331. http://dx.doi.org/10.15866/iremos.v8i3.5918.

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10

Luqman, H. M., M. N. R. Baharom, N. A. M. Jamail, N. A. Othman, R. Abd Rahman, M. F. M. Yousof, and Irshad Ullah. "Conductor sag comparison for 132 kV overhead transmission line improvement in Malaysia." Bulletin of Electrical Engineering and Informatics 9, no. 1 (February 1, 2020): 39–47. http://dx.doi.org/10.11591/eei.v9i1.1863.

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This paper presents conductor sag comparison for 132 kV overhead transmission line improvement in Malaysia. Increasing industrialization and population growth around the world demands higher electricity supply. Power generation has yet to decline but transmitting sufficient electricity to consumers is worrisome due to scarce land space occupied by rapid urbanization. Hence reconductoring method was chosen to improve existing 132 kV overhead transmission line in Malaysia. A group of selected conductors were chosen for comparison where the high temperature low sag conductor stood out the most producing up to 40% sag reduction. This paper focuses on providing conductor alternatives to improve maximum sag of lowest conductor to ground for 132 kV transmission line in Malaysia in accordance to her climate and geographical factor.
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11

Albizu, I., A. J. Mazón, V. Valverde, and G. Buigues. "Aspects to take into account in the application of mechanical calculation to high-temperature low-sag conductors." IET Generation, Transmission & Distribution 4, no. 5 (2010): 631. http://dx.doi.org/10.1049/iet-gtd.2009.0543.

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12

Hakansson, Eva, Paul Predecki, and Maciej S. Kumosa. "Galvanic Corrosion of High Temperature Low Sag Aluminum Conductor Composite Core and Conventional Aluminum Conductor Steel Reinforced Overhead High Voltage Conductors." IEEE Transactions on Reliability 64, no. 3 (September 2015): 928–34. http://dx.doi.org/10.1109/tr.2015.2427894.

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13

Prasetyo, H., B. Sudiarto, and R. Setiabudy. "Analysis of Knee Point Temperature (KPT) determination on High Capacity Low Sag (HCLS) conductors for optimizing the ampacity load and sag on the overhead transmission lines system." IOP Conference Series: Materials Science and Engineering 1098, no. 4 (March 1, 2021): 042021. http://dx.doi.org/10.1088/1757-899x/1098/4/042021.

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14

Beryozkina, Svetlana. "Evaluation Study of Potential Use of Advanced Conductors in Transmission Line Projects." Energies 12, no. 5 (March 1, 2019): 822. http://dx.doi.org/10.3390/en12050822.

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Transmission networks recently faced new technical and economic challenges. The direct use of advanced technologies and modern methods could solve these issues. This paper discusses the potential application of straightforward technology such as high-temperature low-sag conductors (HTLScs) as an additional measure for the protection and effective operation of overhead power lines. An evaluation was conducted to determine an approach for selecting the cross-sectional area and type of conductor with respect to a fault current limitation. It showed the potential benefits of using HTLScs based on an assessment of the throughput capacity and up-front capital costs. A case study considered two scenarios: the construction of a new power line and reconductoring of the existing one. The data for a real project with two overhead power lines were used. The obtained results are analyzed and discussed in detail in this paper.
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15

Kopsidas, Konstantinos, Mohammed Abdulaziz Al Aqil, Asim Haldar, and Tim Kavanagh. "Evaluating Aeolian Vibration Performance of High-Temperature Low-Sag OHL Conductors." IEEE Transactions on Power Delivery, 2021, 1. http://dx.doi.org/10.1109/tpwrd.2021.3097552.

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