Impact of icing severity on corona performance of glaze ice-covered conductor

He, Gaohui; Hu, Qin; Shu, Lichun; Jiang, Xingliang; Liu, Yanqing; Wu, Weiwei; Li, Yongfu; Peng, Huadong

doi:10.1109/tdei.2017.006536

Cited by 11 publications

(4 citation statements)

References 20 publications

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“…At present, the provinces and cities in China with serious icing disasters have established online monitoring systems, which generally consist of monitoring terminals, communication networks and main monitoring stations [61]. Online icing monitoring methods mainly include meteorological model, video image, and mechanical model to reveal icing formation mechanism causing ice disaster [62–64]. Mechanics models are proposed according to change characteristics of mechanical parameters [65].…”

Section: Monitoring Methods Of Icing Disaster In Gridmentioning

confidence: 99%

Development and prospect of monitoring and prevention methods of icing disaster in China power grid

Dong

Jiang

Yin

2022

IET Generation Trans & Dist

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Icing disaster is one of the most serious threats to power grid security in China. This article provides a brief glance of current China's monitoring and prevention methods of icing disaster (MPI) development status. Despite a late start, China's research and development on MPI have made outstanding achievements, including formation mechanism causing ice disaster, key technologies and characteristics, and anti/de-icing approaches development and application. It is apparent that Chinese scientists and engineers confronted the worldwide problem of anti/de-icing, and put forward a comprehensive solution, which plays a more critical role in icing disaster prevention and reduction of power grid during the past 15 years. The article states that the anti/de-icing devices have been applied successively to severe icing issues. These achievements are leading the world in the development and application of MPI. However, it is only at the extreme ice and snow conditions that can test and verify whether prevention methods are comprehensive and perfect or not. And the authors discovered the application limitations in the existing achievements. The article also discusses the overall development trends of MPI in the areas of key technological and technical breakthroughs and application scenarios etc. These discussions serve as references for MPI's future technological advancement and its ever-expanding applications.

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Section: Monitoring Methods Of Icing Disaster In Gridmentioning

confidence: 99%

Development and prospect of monitoring and prevention methods of icing disaster in China power grid

Dong

Jiang

Yin

2022

IET Generation Trans & Dist

Self Cite

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“…In reference of the first issue, there are numerous research that analyse corona losses taking into account different approaches and different weather conditions; fog [42], frost [43,44], rain [22,45], ice [15], snow [22,46], and sand [5], to give some examples reported in literature.…”

Section: Introductionmentioning

confidence: 99%

“…However, such losses significantly contribute to the reduction of the efficiency of the electrical energy transmission. In overhead transmission lines at extra high voltages (345–750 kV), losses can reach 300 kW/km due to adverse weather conditions [15].…”

Section: Introductionmentioning

confidence: 99%

A new method to calculate corona losses for active conductors considering real transmission line unbalance

Llamo‐Laborí

Fuentefria

2022

The Journal of Engineering

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This paper shows the characteristics of an algorithm that calculates the corona losses of transmission lines. The line can have up to four circuits, with any configuration, with single or bundled conductors, and taking into account the line unbalance. This is achieved by modelling the lines in phase quantities, for active conductor, and calculating the corona losses for each one. The results are given per active conductor and average per bundle. In lines with several conductors per phase the results are given per circuit and a total one. These characteristics allow choosing the most convenient configuration and spacing for the conductor bundles, which will reduce and balance corona losses. The results found with this method show that the value of the losses calculated with the formulas with transmission lines symmetrically transposed is conservative. The configuration and the number of conductors per phase have a noted influence in the value and the asymmetry of the corona losses. In double circuit lines, corona losses can be reduced by changing the arrangement of the phases of circuit two in reference to circuit one, with the advantage that, at the design stage, those changes are costless.

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“…Melting ice can significantly reduce the isolation between the ground wire and transmission lines; hence, the discharge may occur if transmission lines are still transmitting the energy. e swing of transmission lines induced by ice melting is analyzed in the experiment environment in [1][2][3][4][5]. Zhuang et al and Nie et al [6,7] applied a trend prediction model for the ice freezing and development of deicing based on the micrometeorology monitor.…”

Section: Introductionmentioning

confidence: 99%

Identification of Permanent Faults and Disturbance Induced by Deicing Based on Permutation Entropy for the Large-Scale Clean Energy Transmission in Winter

Wang¹,

Tang²,

Xiang³

et al. 2021

Mathematical Problems in Engineering

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Ice shedding may induce isolated ground wires’ temporary grounding, which can cause electric quantities of direct current (DC) deicing devices to fluctuate. Hence, the disturbance of ice shedding is able to trigger the protective relay frequently and unnecessarily, which adversely affects the deicing process. Due to the randomness of ice shedding, the grounding resistance varies quickly; thus, the disturbance in poles of deicing devices can be detected multiple times in a short time. Moreover, the permanent fault requires steady arc plasma because of the low output voltage and current of deicing devices, which cannot bring out multiple-time disturbances in the poles. This paper proposes the identification of permanent faults and disturbance induced by deicing based on the permutation entropy, which is verified by a large number of simulations.

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Impact of icing severity on corona performance of glaze ice-covered conductor

Cited by 11 publications

References 20 publications

Development and prospect of monitoring and prevention methods of icing disaster in China power grid

Development and prospect of monitoring and prevention methods of icing disaster in China power grid

A new method to calculate corona losses for active conductors considering real transmission line unbalance

Identification of Permanent Faults and Disturbance Induced by Deicing Based on Permutation Entropy for the Large-Scale Clean Energy Transmission in Winter

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