Prevention of Covered Conductor Burndown on Distribution Circuits???Arcing Protection Devices

Lee, Myeong Soo; Fritz,; Stiller,; Shankle,

doi:10.1109/mper.1982.5519723

Cited by 2 publications

(3 citation statements)

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“…However, for singlephase short circuit in grounded neutral systems or phase-tophase short circuit in either system, the short-circuit arc has a very large current and would damage the covered conductors and insulator strings, which would cause a long period of service interruption. Therefore, in order to prevent short-circuit arcs, particularly the worst three-phase short-circuit arcs, from breaking the conductors, arcing-protection hardware [1], [2] like arcing horns [3], [4] are developed. The arcing-protection hardware could lead the flashover to happen on itself and for the single-phase flashover, the subsequently generated arc would keep burning there until tripout.…”

Section: Movement Simulation Of Three-phase Short-circuit Arcs On Dismentioning

confidence: 99%

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Movement Simulation of Three-Phase Short-Circuit Arcs on Distribution Lines Based on the Coupling of Magnetic Field and Motion

Chen

et al. 2008

IEEE Trans. Plasma Sci.

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Three-phase short-circuit arcs often cause the breakage of covered conductors on distribution lines, and their movement processes have become an important problem in power-distribution systems. This paper presents the studies on the movement simulation of the three-phase short-circuit arcs. Based on the latest electric arc model and the coupling of magnetic field and motion, this paper develops the procedure to simulate the movement processes of the arcs. Simulation results show that the arcs have different movement directions and behaviors, which are in agreement with the experimental phenomena. This paper is very helpful to design an effective device that prevents the arcs from causing the breakage of the conductor and the damage of the insulator.

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Section: Movement Simulation Of Three-phase Short-circuit Arcs On Dismentioning

confidence: 99%

“…For the ith element of the Phase-A arc, the movement velocity ν aAi during a time step ∆t is determined by [5] F mAi = −F aAi (1) where the magnetic force F mAi and the magnitude of the aerodynamic force F aAi are expressed, respectively, as…”

Section: A Movement Modelmentioning

confidence: 99%

Movement Simulation of Three-Phase Short-Circuit Arcs on Distribution Lines Based on the Coupling of Magnetic Field and Motion

Chen

et al. 2008

IEEE Trans. Plasma Sci.

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“…This caused certain disturbances in the operation of the system. Some authors [1], [2], pointed out these problems as early as the mid 1980s. There are various Manuscript factors mentioned in the analyses of these disturbances, among which the most problematic are radio-frequency disturbances, the burning down of conductors, the phenomenon of audible and visible corona, etc.…”

Section: Introductionmentioning

confidence: 99%

Design of Systems of Covered Overhead Conductors by Means of Electric Field Calculation

Pihler

Ticar

2005

IEEE Trans. Power Delivery

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Recently, in medium voltage overhead line systems, previously bare conductors are being replaced with conductors covered with a layer of insulation. Covered conductors enable an economical increase in operational reliability. At the current stage of development, there are several ways of replacing bare conductors with covered ones. Such a replacement also requires changing the accompanying line accessories, insulators, and line protection devices. The selection of the optimum combination of covered conductors and equipment has been done by means of electric field calculations. The optimization parameters have included the use of existing equipment to the maximum possible extent, new elements of equipment that have to be added, and the prevention of disturbances and failures in operation. Theoretical findings have been confirmed with laboratory tests on prototype combinations of covered conductors and the accompanying equipment.Index Terms-Covered conductor, electric field, finite element method, medium voltage overhead line, partial discharges.

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Prevention of Covered Conductor Burndown on Distribution Circuits???Arcing Protection Devices

Cited by 2 publications

References 0 publications

Movement Simulation of Three-Phase Short-Circuit Arcs on Distribution Lines Based on the Coupling of Magnetic Field and Motion

Movement Simulation of Three-Phase Short-Circuit Arcs on Distribution Lines Based on the Coupling of Magnetic Field and Motion

Design of Systems of Covered Overhead Conductors by Means of Electric Field Calculation

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