A New Method for Calculation of Corona Inception Voltage in Stranded Conductors of Overhead Transmission Lines

Zangeneh, Ali; Gholami, Ahmad; Zamani, Vahraz

doi:10.1109/pecon.2006.346716

Cited by 17 publications

(3 citation statements)

References 7 publications

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“…in larger gaps (up to one meter) the average electric field needed for break down becomes around 5 × 10 5 V/m, while it decreases to 1 × 10 5 V/m for a ten meters gap. An air breakdown in long gap go through four subsequent phases: first corona inception and development; stem formation; leader head propagation; and leader channel evolution (Zangeneh et al , 2006). …”

Section: Electrical Safety Analysismentioning

confidence: 99%

Hot-line assembly strategy for connection fittings in 110kV intelligent substation

Tang

Wang

et al. 2018

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Purpose The purpose of this paper is to provide a safe control strategy for aloft hot-line assembly of connection fittings in 110kV intelligent substations, which is significant to research on hot-line working robots. Design/methodology/approach This paper addresses challenges of the task and establish the contact models of connection fittings. By using this control strategy, neither high precision vision positioning nor preset global reference coordinate system is required. Visual computing only needs to provide an approximately position for the manipulator end-effector, after which the connection fittings assembly task could be completed with the posture of the manipulator adjusted following the guidance by force-position control. The authors also analyze the influence of the intervention of manipulators on the very non-uniform electric field during the operation. Findings This strategy will be particularly useful for the hot-line assembly of connection fittings in 110kV intelligent substations as well as some assembly tasks where uncertain target position and complex contact surface such as cylindrical hole is involved. Practical implications This assembly strategy is tested in energized simulated experimental system. The experiment results show that the robot can replace the manual operation to complete the assembly task safely and efficiently. Originality/value This assembly strategy is able to achieve the assembly task of connection fittings. Unlike other peg-in-hole assembly strategy, it does not require high stability of manipulator or plane contact surface around the hole.

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Section: Electrical Safety Analysismentioning

confidence: 99%

Hot-line assembly strategy for connection fittings in 110kV intelligent substation

Tang

Wang

et al. 2018

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“…There are several parameters that affect corona onset voltage in addition to the surface E-field, such as the ambient conditions, temperature, air pressure and relative atmospheric conditions. Prediction models of corona onset voltage were few (Olsen et al, 1997;Zangeneh and Gholami, 2005;Eroncel et al, 2010;Konstantios et al, 2013;Ziedan et al, 2010;EL-Bahy et al, 2007;Van Thanh et al, 2016c). Figure 1 shows the regions of corona discharge, the electric field intensity is high in glow region and decreases slowly towards the drift region and equal to zero in passive electrode.…”

Section: Corona Onset Modelsmentioning

confidence: 99%

“…This algorithm is simulated for different pressure and radius of conductors. The configuration of conductors considered is stranded as overhead high transmission lines (Zangeneh and Gholami, 2005). The impact of various variables on corona power losses and corona onset voltages was determined, and DC and AC tests were performed at Fuat Kulunk high voltage laboratory of Istanbul Technical University (Eroncel et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Pressure and temperature effects on corona onset voltage in electrostatic precipitators

Fuliful¹

2017

Int. J. Phys. Sci.

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Corona onset voltage is one of the most important factors that determine the charging toxic particle in an industrial application. Electrostatic precipitators (ESP) remove the suspended particle with a gas inlet. This paper developed Peek's formula to estimate the maximum electric field near the discharge wire in corona discharge models, the values of maximum electric field and corona onset voltage near the discharge wires have been calculated for different values of pressure and temperature for confined gas in a region between the electrodes in ESP. The model uses finite difference method (FDM) to solve governing equations (Poisson's and current continuity equations) simultaneously. Computer simulation method uses FORTRAN program to estimate potential distribution and maximum electric field intensity. The calculated corona onset voltage values are compared with the calculated values of different models.

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The Influence of Humidity on Setting of DC Bus in Converter Station

Guo

et al. 2011

Electrical Engineering and Control

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A New Method for Calculation of Corona Inception Voltage in Stranded Conductors of Overhead Transmission Lines

Cited by 17 publications

References 7 publications

Hot-line assembly strategy for connection fittings in 110kV intelligent substation

Hot-line assembly strategy for connection fittings in 110kV intelligent substation

Pressure and temperature effects on corona onset voltage in electrostatic precipitators

The Influence of Humidity on Setting of DC Bus in Converter Station

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