De-icing EHV overhead transmission lines using electromagnetic forces generated by moderate short-circuit currents

Landry, M.; Beauchemin, Roger; Venne, André

doi:10.1109/tdcllm.2000.882806

Cited by 19 publications

(6 citation statements)

References 2 publications

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“…is the elevation angle of height between tower A and B . is closely related to the self weight of the conductor, and it can be described as (4) where conductor load, (N/m); cross-sectional area of the conductor .…”

Section: Is the Span Between Tower A And B (In Meters) Is The Heightmentioning

confidence: 99%

Predictive Model for Equivalent Ice Thickness Load on Overhead Transmission Lines Based on Measured Insulator String Deviations

Jiang

Xiang

Zhang

et al. 2014

IEEE Trans. Power Delivery

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Transmission-line icing presents a serious threat to the safe operation of power systems. Therefore, the icing condition of overhead transmission lines must be accurately calculated for online monitoring and prewarning systems. Based on the icing data obtained at Xuefeng Mountain Natural Icing Stations (XMNIS), the cross-sectional shape of glaze icing on conductors was studied, and the correction coefficient of the actual nonuniform ice was proposed to provide an accurate and convenient method for field icing measurement. In addition, by analyzing the characteristics of the tension and tilt of the insulator string at the iced tangent tower, a new mechanical calculation model considering the ice and wind loads was established. One-month field observations and experiments were conducted in XMNIS, and it is shown that the calculation results have good agreement with experiment results, which suggests that the model can be used for ice thickness calculation and online monitoring on transmission lines.Index Terms-Angle, correction coefficient of ice shape, icing thickness, mechanical calculation model, overhead transmission line.

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Section: Is the Span Between Tower A And B (In Meters) Is The Heightmentioning

confidence: 99%

Predictive Model for Equivalent Ice Thickness Load on Overhead Transmission Lines Based on Measured Insulator String Deviations

Jiang

Xiang

Zhang

et al. 2014

IEEE Trans. Power Delivery

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“…In winter, under the influence of low temperature, humidity and wind, dense glaze is easily formed around the lines. Glaze doesn't come off easily, and in snowing and raining weather, it forms icing and the icing would increase gradually [8]. Fig.…”

Section: Deicing Environment and Deicing Devicesmentioning

confidence: 99%

“…Currently there are many deicing methods adopted within and outside of China, such as thermal deicing, mechanical deicing, electric pulse, laser deicing, ultrasonic deicing and microwave deicing [3][4][5][6][7][8], etc. Thermal deicing mainly uses methods of increasing load current, alternating current short circuit and direct current short circuit [9].…”

Section: Introductionmentioning

confidence: 99%

Overhead High-Voltage Transmission Line Deicing Robot System and Experiment Study

Yucheng

Hua

et al. 2010

Intelligent Robotics and Applications

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Abstract. Based on the further study of high-voltage transmission line deicing environment, this paper proposed a wheel milling deicing device and a compound deicing robot that can have double wheel milling and compressing wheel rolling simultaneously; implemented deicing experiment and obstacle negotiation simulation analysis on the transmission and robot mechanic system; proposed an obstacle negotiation navigation control method based on electromagnetic sensors, and finally implemented deicing experiment and obstacle negotiation experiment on deicing robot prototypes. The experiment demonstrates the feasibility of electromagnetic navigation technology in leading robot in obstacle negotiation, and also shows that it's possible to use compound deicing method of milling and compressing wheel rolling.

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“…Theresearchandapplicationofice-meltinghavealonghistory,theformerSovietUnionhave usedthemeasureofacice-meltingsince1950s,Chinahavestartedusingacice-meltingsince1976, ManitobaWaterandPowerAuthorityinCanadahasstudiedondcshortcircuitice-meltingsince 1993.Theice-meltingoftransmissionlinehasbeenstudiedwidelyintheworld,andmanymodels havebeenproposedtocalculatetheice-meltingtime [6][7][8] ,butrelativelylargeerrorhaspresented betweentheresultscalculatedbyexistingmodelsandtheactualengineeringapplication.Theanalysis show,thereasonoftheerroristhatallexistingice-meltingmodelsassumethatthetemperatureof conductorsurfacemaintainat0°Cduringice-melting.Butactualmeasurementandanalysisshowthat temperatureofconductorishigherthan0°Cbecauseoftheeffectofwaterfilmandairgapcausedby ice-melting.…”

Section: Introductionmentioning

confidence: 99%

Study on Temperature Characteristics of Ice-covered Conductors during Ice-melting

Wang¹,

He²,

Liu³

et al. 2016

Proceedings of the 2016 6th International Conference on Advanced Design and Manufacturing Engineering (ICADME 2016)

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Abstract. Ice-meltingwithshort-circuitintransmissionlineisthemosteffectivemethodsofde-icing. Conductorwouldbedamagedifrapidlyrisingconductortemperatureexceedstheallowable temperature.Therefore,studyontemperaturecharacteristicofconductorintheprocessofice-melting ensureeffectiveice-meltingandnottodamagethewireinice-meltingprocess.Combinedwiththe thermalice-meltingwithshort-circuitcurrentbalanceofduringice-melting,mathematicaland physicalmodeloficemeltingwasestablished,theinfluencingruleofavarietyoffactorsonthe maximumtemperatureofconductorwasalsoanalyzed.Inaddition,themethodtocalculatethe maximumtemperatureofconductorwasputforward.

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De-icing EHV overhead transmission lines using electromagnetic forces generated by moderate short-circuit currents

Cited by 19 publications

References 2 publications

Predictive Model for Equivalent Ice Thickness Load on Overhead Transmission Lines Based on Measured Insulator String Deviations

Predictive Model for Equivalent Ice Thickness Load on Overhead Transmission Lines Based on Measured Insulator String Deviations

Overhead High-Voltage Transmission Line Deicing Robot System and Experiment Study

Study on Temperature Characteristics of Ice-covered Conductors during Ice-melting

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