A survey of the flashover performance of HVDC converter station insulators

Almgren, B.; Astrom, U.; Wu, Dong

doi:10.1109/icpst.1998.729017

Cited by 8 publications

(3 citation statements)

References 2 publications

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“…[9,10] As an example, in real scenarios, wet conditions due to rain reduce the life of high voltage bushings by reducing the dielectric strength. [11,12] This results in increased risk of failure, increased maintenance costs and lower productivity of power transformers due to the repair downtime. [13] Therefore, fabrication of insulators that minimize the interaction with water is paramount.…”

Section: Superhydrophobic Insulatorsmentioning

confidence: 99%

“…In addition, the presence of water plays a key role in affecting the dielectric strength of a material . As an example, in real scenarios, wet conditions due to rain reduce the life of high voltage bushings by reducing the dielectric strength . This results in increased risk of failure, increased maintenance costs and lower productivity of power transformers due to the repair downtime .…”

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confidence: 99%

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Superhydrophobic Coatings for Improved Performance of Electrical Insulators

Vallabhuneni

Movafaghi

Wang

et al. 2018

Macro Materials & Eng

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Dielectric strength of electrical insulators is adversely affected by both wet conditions and surface roughness due to accelerated dielectric breakdown. While textured superhydrophobic coatings (i.e., coatings that are extremely repellent to water) can prevent the accumulation of water and help retain the dielectric strength of insulators under wet conditions, it is unclear whether or not the presence of texture (i.e., surface roughness) allows the retention of the dielectric strength of insulators. In this work, through a series of systematic experiments and analysis, it is concluded that porous superhydrophobic coatings rather than rough monolithic superhydrophobic surfaces allow the retention of dielectric strength of insulators under wet conditions in spite of the surface roughness. The insights from this work can enable the design of electrical insulators with improved performance and increased longevity.

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Section: Superhydrophobic Insulatorsmentioning

confidence: 99%

mentioning

confidence: 99%

Superhydrophobic Coatings for Improved Performance of Electrical Insulators

Vallabhuneni

Movafaghi

Wang

et al. 2018

Macro Materials & Eng

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“…It is observed that the use of HVDC transmission line systems has become widespread with its technological and economic advantages, and parallel to this, studies on HVDC transmission line systems have also become widespread. When these studies are examined, it is seen that studies especially on technical aspects such as the integration of HVDC transmission lines into existing AC networks (Brask, 2008;Burger and Tuson, 2005), effects on network reliability and development (Kotb, 2018;Stenberg, 2013), functionality of HVDC converter at world stations (Almgren et al, 1998;Beerten et al, 2014), reliability of test systems (Bertling and Pramod, 2011), VSC (voltage source converter)-HVDC modeling (Träff and Lennerhag, 2013), location determination for in-network application (Shuai, 2012) and applicability at distribution level (Giraneza, 2013) become prominent. In a limited number of studies evaluating the market structure, geographical distribution, and technical/economic superiority of HVDC transmission line systems, it is seen that the subject has been examined within the scope of engineering science (Alassi et al,, 2019;Gamit et al, 2015;Rudervall et al, 2000).…”

Section: Introductionmentioning

confidence: 99%

An Economic and Technical Review for the Utilization of HVDC in Turkey and in the World

Acaroğlu

Najafi

Kara

et al. 2021

Konya Journal of Engineering Sciences

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In recent years, it is seen that High Voltage Direct Current (HVDC) transmission line systems have come to the fore in the field of energy efficiency in the world. Therefore, it is predicted that analyzing the technological and economic advantages of HVDC transmission line systems will make an important contribution to energy efficiency policies. In this regard, this study aims to examine the technological and economic advantages of HVDC transmission systems through the historical development with applications in Turkey and in the world. In addition to this, it is expected that the evaluation of the effects of energy efficiency on the economy will bring a different perspective to the energy and economic literature. Therefore, it is thought that energy and economic policies for the spread of HVDC transmission line systems worldwide will be essential. The asymmetric distribution of natural energy sources in the world causes energy supply security problems in the countries such as Turkey in terms of high foreign dependence on energy. For this reason, it is necessary to meet the increasing energy demand and increase the existing capacity day by day. Besides, it is important to develop policies for efficient use of energy. HVDC technology is extremely important for a developing country like Turkey. Moreover, it is known that this energy transmission technology has become widespread in developed countries. Thereby, a technical comparison is done for investment costs of the transmission system in Germany. As a result, other than bringing economic benefits with the energy transmission of Turkey through HVDC, it has important potential for making energy transmission possible with her neighbors and European Union countries.

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High Voltage Direct Current Transmission

Bayliss¹,

Hardy²

2012

Transmission and Distribution Electrical Engineering

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A survey of the flashover performance of HVDC converter station insulators

Cited by 8 publications

References 2 publications

Superhydrophobic Coatings for Improved Performance of Electrical Insulators

Superhydrophobic Coatings for Improved Performance of Electrical Insulators

An Economic and Technical Review for the Utilization of HVDC in Turkey and in the World

High Voltage Direct Current Transmission

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