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Artigos de revistas sobre o tema "RIP Bushings"

Autor: Grafiati

Publicado: 4 de junho de 2021

Última modificação: 6 de setembro de 2023

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1

Tang, Hao, Guangning Wu, Ming Chen, Jiang Deng, and Xining Li. "Analysis and Disposal of Typical Breakdown Failure for Resin Impregnated Paper Bushing in the Valve Side of HVDC Converter Transformer." Energies 12, no. 22 (2019): 4303. http://dx.doi.org/10.3390/en12224303.

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This paper presents analysis, diagnosis and disposal with a typical internal breakdown failure of the resin impregnated paper (RIP) valve side bushing in high voltage direct current (HVDC) converter transformer. Based on the analysis of fault current characteristics at the time of the RIP valve side bushing failure, and field test results of insulation parameters, a method of diagnosing typical breakdown failures of valve side bushings is proposed. Through disassembly inspection of the internal overheating and arcing traces on the failure bushing, the root cause of this typical breakdown failu

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2

Shiling, Zhang. "Structure Optimization of UHV RIP Oil-SF6 bushings Based on Improved Equal Margin Design Method and Back-Propagation Neural Network." E3S Web of Conferences 261 (2021): 03040. http://dx.doi.org/10.1051/e3sconf/202126103040.

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Equal margin design method based on the classic analytic formula is widely used in development of extra-high voltage bushing products, and its effectiveness and practicality have been fully validated. However, model and temperature factors have significant impact on internal E-field distribution of UHVAC and UHVDC bushing condenser, which traditional analytic formula is difficult to evaluate quantitatively, so it’s necessary to improve traditional equal margin design method. Firstly, basic principles of equal margin design method and its software package were briefly described, and the laws of

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3

Li, Li, Qi Li, Shuxin Xu, et al. "Electric Field Improvement for High-Voltage Bushings." Polymers 15, no. 1 (2022): 40. http://dx.doi.org/10.3390/polym15010040.

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Resin-impregnated paper (RIP) bushing has gained significant interest due to its extended application in Extra High Voltage (EHV) and Ultra High Voltage (UHV) electricity transmission systems. However, the design criterion of its overall structure, the geometry parameters of the condenser layers, and stress release devices, etc., are still not fully understood. This article proposes a unique electric field optimization technique to integrate both the analytical and the numerical methods. The charge simulation method (CSM) is employed to create the overall equipotential surface, within which th

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4

Wang, Qingyu, Xi Yang, Huidong Tian, Peng Liu, and Zongren Peng. "A novel dissipating heat structure of converter transformer RIP bushings based on 3-D electromagnetic-fluid-thermal analysis." IEEE Transactions on Dielectrics and Electrical Insulation 24, no. 3 (2017): 1938–46. http://dx.doi.org/10.1109/tdei.2017.006027.

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5

Tian, Huidong, Peng Liu, Shiyi Zhou, et al. "Research on the deterioration process of electrical contact structure inside the ±500 kV converter transformer RIP bushings and its prediction strategy." IET Generation, Transmission & Distribution 13, no. 12 (2019): 2391–400. http://dx.doi.org/10.1049/iet-gtd.2019.0110.

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6

Shiling, Zhang, Song Wei, and Yang Huaxia. "Electro-thermal Coupling Model for Radial Temperature and Electric Field Distribution Computation and Experimental Research of 550kV RIP AC Oil-gas Bushings." Journal of Physics: Conference Series 1971, no. 1 (2021): 012022. http://dx.doi.org/10.1088/1742-6596/1971/1/012022.

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7

Chen, Liu, Liang, Zhao, and Tang. "Study on Surface Charge Accumulation Characteristics of Resin Impregnated Paper Wall Bushing Core Under Positive DC Voltage." Energies 12, no. 23 (2019): 4420. http://dx.doi.org/10.3390/en12234420.

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As a critical component of a high-voltage direct current (HVDC) transmission system, resin impregnated paper (RIP) wall bushing has become a weak point because of its surface charge accumulation. This paper studies a model RIP wall bushing core designed by the equal capacitance method. The stationary resistive field along the gas–solid interface of the RIP wall bushing core is investigated theoretically by a gas model, which considers the non-linearly field-dependent volume conductivity. The results show that the gas conductivity along the core surface tends to be an arched distribution from t

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8

Yang, Hongda, Qingguo Chen, Xinyu Wang, Minghe Chi, and Jinfeng Zhang. "Dielectric and Thermal Conductivity Characteristics of Epoxy Resin-Impregnated H-BN/CNF-Modified Insulating Paper." Polymers 12, no. 9 (2020): 2080. http://dx.doi.org/10.3390/polym12092080.

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High-voltage direct-current (HVDC) dry bushing capacitor-core insulation is composed of epoxy resin-impregnated insulating paper (RIP). To improve the thermal conductivity, breakdown strength, and space charge characteristics of RIP, 0.1 wt % nano-cellulose fiber (CNF)-modified RIP (CNF/RIP), 2.5–30 wt % hexagonal boron nitride (h-BN)-modified RIP (h-BN/RIP), and 2.5–30 wt % h-BN + 0.1 wt % CNF-modified RIP (h-BN + 0.1 wt % CNF/RIP) were prepared. Scanning electron microscopy (SEM) was implemented; the thermal conductivity, DC conductivity, DC breakdown strength, and space charge characteristi

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9

Yang, Hongda, Qingguo Chen, Xinyu Wang, Minghe Chi, Heqian Liu, and Xin Ning. "Dielectric and Thermal Conductivity of Epoxy Resin Impregnated Nano-h-BN Modified Insulating Paper." Polymers 11, no. 8 (2019): 1359. http://dx.doi.org/10.3390/polym11081359.

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Epoxy resin-impregnated insulation paper (RIP) composites are used as the inner insulation of dry condenser bushing in the ultra-high voltage direct current (UHVDC) power transmission system. To improve the dielectric properties and heat conductivity of RIP, hexagonal boron nitride (h-BN) nano-flakes are added to the insulation paper at concentrations of 0–50 wt % before impregnation with pure epoxy resin. X-ray diffraction (XRD), scanning electron microscopy (SEM) observations, thermal conductivity as well as the typical dielectric properties of direct current (DC) volume conductivity. DC bre

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10

Chen, Qingguo, Hongda Yang, Xinyu Wang, Heqian Liu, Kai Zhou, and Xin Ning. "Dielectric Properties of Epoxy Resin Impregnated Nano-SiO2 Modified Insulating Paper." Polymers 11, no. 3 (2019): 393. http://dx.doi.org/10.3390/polym11030393.

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Epoxy resin-impregnated insulation paper (RIP) composites are used as the inner insulation of dry condenser bushing in the ultra-high voltage direct current (UHVDC) power transmission system. To improve the dielectric properties of RIP, nano-SiO2 is added to the insulation paper at concentrations of 0–4wt % before impregnation with pure epoxy resin. X-ray diffraction (XRD), scanning electron microscopy observations as well as the typical dielectric properties of relative permittivity, DC volume conductivity, DC breakdown strength, and thermally stimulated depolarization current (TSDC), were ob

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11

Shiling, Zhang. "Study of the Dielectric Properties of Condenser Material Used in SF6 Insulated RIP Bushing." IOP Conference Series: Materials Science and Engineering 733 (January 21, 2020): 012013. http://dx.doi.org/10.1088/1757-899x/733/1/012013.

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12

Chen, Ming, Xuandong Liu, Zhicheng Wu, Yi Zhao, Qiaogen Zhang, and Hao Tang. "Novel heat pipe current-carrying tube of RIP valve-side bushing in converter transformer." Electric Power Systems Research 184 (July 2020): 106344. http://dx.doi.org/10.1016/j.epsr.2020.106344.

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13

Amendola, G., Ignazio Dimino, Antonio Concilio, Rosario Pecora, and Francesco Amoroso. "Actuation System Design for a Morphing Aileron." Applied Mechanics and Materials 798 (October 2015): 582–88. http://dx.doi.org/10.4028/www.scientific.net/amm.798.582.

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In the field of European and International morphing structures projects, the CRIAQ MD0-505 enables collaboration among Italian and Canadian research centers and industries paying particular attention to the development of innovative design in the area of adaptive technologies. The main project goals involve the design of a wing trailing edge device capable to improve aerodynamic efficiency in all the flight envelope leading to fuel consumption reduction with positive impact on aircraft weight. This paper deals with the design and modeling of a novel actuation system of a full scale morphing ai

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14

Shiling, Zhang. "Theoretical calculation model of insulation medium and eddy current heating under complex waveform of ±800kV convertor transformer RIP bushing used in valve side." Journal of Physics: Conference Series 1906, no. 1 (2021): 012057. http://dx.doi.org/10.1088/1742-6596/1906/1/012057.

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15

Chen, Ming, Xuandong Liu, Yuhan Sun, Zhicheng Wu, and Hao Tang. "Influence of material volume conductivity on electric field and surface charge of RIP valve-side bushing core under DC electro-thermal coupling stress." IEEE Transactions on Dielectrics and Electrical Insulation 27, no. 1 (2020): 164–71. http://dx.doi.org/10.1109/tdei.2019.008362.

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16

Sharma, Harish K., Savita Nema, and Rajesh K. Nema. "IMPROVING DIELECTRIC DISSIPATION FACTOR OF 420 kV CLASS OIL-SF6 RIP BUSHINGS AT SITE." International Journal of Power and Energy Systems 41, no. 1 (2021). http://dx.doi.org/10.2316/j.2021.203-0254.

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17

Zhang, Hongliang, Kun Li, Hai Jin, et al. "Space Charge Dynamics in Epoxy Resins Under the Influence of a Long-Term High Electric Field at Various Temperatures." Frontiers in Chemistry 10 (June 15, 2022). http://dx.doi.org/10.3389/fchem.2022.904750.

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As the main insulating material of an ultra-high voltage (UHV) resin impregnated paper (RIP) bushing, epoxy resin accumulates space charge under the DC voltage, which would affect the insulation properties of the bushing. In this article, the evolution of space charge accumulation and dissipation within the epoxy resin samples was measured under the influence of a long-term (24 h) electric field of 60 kV/mm at 40°, 60°, 80°, and 100°C. The experimental results show that the space charge transport in the epoxy sample was a long-time dynamic process. When the temperature was not greater than 60°

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18

"Multifunctional bushing for gas foil bearing - test rig architecture and functionalities." International Journal of Multiphysics 15, no. 1 (2021). http://dx.doi.org/10.21152/1750-9548.15.1.73.

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