Performance Comparison of Using ACSR and HTLS Conductors for Current Uprating of 230-kV Overhead Transmission Lines

Nuchprayoon, Somboon; Chaichana, Artitaya

doi:10.1109/eeeic.2018.8493888

Cited by 10 publications

(5 citation statements)

References 19 publications

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“…Research has covered the performance [42]- [45], durability [32], [46], [47], economic cost [24], [48]- [50], ways to increase the ampacity line [51], [52] and material properties of HTLS conductors [1], [53], [54]. An HTLS conductors is not only able to address the vibration and galloping issues but can also increase the current carrying capacity of transmission lines to meet higher electricity demand.…”

Section: B Modified Conductorsmentioning

confidence: 99%

Review of Thermal Stress and Condition Monitoring Technologies for Overhead Transmission Lines: Issues and Challenges

et al. 2020

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The overhead transmission line system is one of the methods of transmitting electrical energy at a high voltage from one point to another, especially over long distances. The demand for electrical energy is increasing due to the increase in the world population, the evolution of transport technology, and economic expansion, thereby resulting in overloading to the overhead line (OHL) system. In building new infrastructure for transmission lines, several issues need to be addressed. Thus, optimizing existing power by increasing the ampacity of power line is a practical solution to meet energy demand issues. During long-term operation, the temperature of OHL conductors may increase beyond their rated temperature, which is typically 75 °C for conventional conductors such as aluminum-conductor steel-reinforced cable. This condition is defined as thermal stress, which results in lower sag vertical clearance, tensile loss, elongation and creep, and reduced life span of the conductors. This condition must be avoided to ensure that the line is not permanently elongated, which can disrupt the vertical ground clearance, and to expand the conductor's life. Other factors such as lightning, wildfire, aging, and degradation of the conductor can also cause thermal stress on the conductors and have thermal effects on the conductor's performance. Therefore, unwanted thermal stress needs to be examined and identified by monitoring the thermal effect and behavior of the lines. This paper presents the state of the art in monitoring technologies that can be used to identify thermal stress on OHL conductors, including the issues and challenges in monitoring. At the end of this paper, a few suggestions are included to address the occurrence and assessment of thermal stress in lines. Ultimately, this work may provide complete information to researchers and maintenance engineers to enable them to make better decisions on condition monitoring, operation, and maintenance of the system. INDEX TERMS Overhead transmission line, thermal rating, conductor temperature, thermal stress effect, conditioning monitoring.

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Section: B Modified Conductorsmentioning

confidence: 99%

Review of Thermal Stress and Condition Monitoring Technologies for Overhead Transmission Lines: Issues and Challenges

et al. 2020

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“…1. Cross-section of AAC and AAAC conductors ACSR conductors have been used during the last century in conventional overhead high-voltage transmission lines, being the most used conductors [70], since they are cost-effective and available from different suppliers [71]. They are composed of hard-drawn (1350-H19) aluminum strands [41] to attain higher tensile strength [44], which are wrapped around the core.…”

Section: Al or Al-alloy Wiresmentioning

confidence: 99%

“…HTLS conductors can double the current carrying capacity of conventional ACSR conductors [2], [72], [76], while offering almost the same impedance, although when operating at very high temperatures their electric resistance increases, and thus, the power transfer capability can be reduced [72], so they are often applied in relative short lines [33]. Therefore, the main drawbacks of using HTLS conductors are the considerably higher conductor costs and operating costs because of the increased power losses [71]. HTLS conductors are nowadays installed at line voltages in the range 66-500 kV [42].…”

Section: B High Temperature Conductorsmentioning

confidence: 99%

Uprating of transmission lines by means of HTLS conductors for a sustainable growth: Challenges, opportunities, and research needs

Riba

Bogarra

Gómez-Pau

et al. 2020

Renewable and Sustainable Energy Reviews

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“…Many studies have been conducted on the increase in power transmission capabilities by using the method of uprating existing lines, which is associated with the implementation of thermal and voltage uprating mechanisms [19,20]. Previous work revealed that thermal and voltage uprating methods associated with different techniques and processes have been employed all over the world to meet the ever-increasing electricity demand [21][22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Increasing Power Transfer Capability of Transmission Lines Using the Quasi-Dynamic Operation and Monitoring System

Shokouhandeh¹,

Kamarposhti²,

Lorenzini³

et al. 2022

MMEP

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One of the key methods for reducing the possible interruptions and the pressures imposed on the operator is to employ the hidden capacity of the transmission lines. The basis of selecting the line capacity is the ability of the operator to preserve the allowed distance between the transmission line and the ground, trees, vehicles, and other obstacles that are directly under the line. One of the methods that increase the capacity of the employed line is the line monitoring equipment and using the dynamic capacity. Although the dynamic capacity method costs less than other options, it might be costly and laborsome. Thus, there should be a tradeoff between the dynamic and static capacity, known as the quasi-dynamic capacity. This term indicates that the dynamic capacity is used in studies for making logical decisions for changing the static capacity or operation of the operator. In many cases, this technology can be implemented temporarily and then removed or displaced for other applications. The purpose of this study is to present a quasi-dynamic method for determining and operating the line capacity to reduce the costs required to determine the complete dynamic capacity and improve the assumptions used in determining the static capacity.

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Performance Comparison of Using ACSR and HTLS Conductors for Current Uprating of 230-kV Overhead Transmission Lines

Cited by 10 publications

References 19 publications

Review of Thermal Stress and Condition Monitoring Technologies for Overhead Transmission Lines: Issues and Challenges

Review of Thermal Stress and Condition Monitoring Technologies for Overhead Transmission Lines: Issues and Challenges

Uprating of transmission lines by means of HTLS conductors for a sustainable growth: Challenges, opportunities, and research needs

Increasing Power Transfer Capability of Transmission Lines Using the Quasi-Dynamic Operation and Monitoring System

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