Single-phase auto-reclosing of the Vietnam 500 kV system

Tran-Quoc, T.; Huy, H.V.-V.; Duong-Lan, H.; Nguyen-T.-Hoang, L.; Tran-Dinh, L.

doi:10.1109/icpst.1998.729251

Cited by 3 publications

(3 citation statements)

References 10 publications

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“…Such a model might give less reliable results for other arcing conditions on the same line, or completely inaccurate results for experiments carried out on other lines with different length, voltage level, and conductor arrangement [3]. However, a computer simulation of the process leading to the secondary arc extinction can be a suitable tool for sensitivity studies to identify the main influencing factors and to find the similitude invariants, which are necessary to compile generalized diagrams for the estimation of the arc extinction time [1], [5]. As the purpose of this paper is an investigation of neutral reactor effect and comparison of different amount of its reactance in the cases of transposed and un-transposed lines, [1].…”

Section: Arc Modeling For Computer Simulationmentioning

confidence: 99%

“…By appropriate selection of this reactor, arc current is limited and extinguished faster [3], [4]. This method is appropriate mainly for transposed lines, whereas use of shunt reactors and neutral reactor with breakers having switching capability among shunt reactor phases and neutral reactor has been suggested for un-transposed lines at very high voltage levels [1], [5].…”

Section: Introductionmentioning

confidence: 99%

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Using Neutral Reactor for Suppression of Secondary Arc Current During Single-Phase Auto-Reclosing Under Different Fault Locations

Bolhasani¹,

Kamangar²

2014

IJCEE

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When single-phase grounding fault occurs in high voltage transmission line, secondary arc current and recovery voltage must be suppressed in order to ensure that single-phase auto-reclosing operates reliably and successfully. Automatic single-phase reclosing is used to clear single-phase-to-ground faults, which are about 80% of the transient faults. In order to have successful fast reclosing, different methods are used to extinguish the arc. One of the common methods is to use a single-phase reactor in the neutral of shunt reactor, when transmission line is compensated with shunt reactors. In this paper, exact system and an exact arc modeling is used for transient simulation of neutral reactor and guidelines for selecting the appropriate amount for the neutral reactor are proposed. then uses EMTP-RV software to simulate suppression effect about different fault point locations toward an example of 400kv double-ended sources high-voltage transmission line.

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Section: Arc Modeling For Computer Simulationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Using Neutral Reactor for Suppression of Secondary Arc Current During Single-Phase Auto-Reclosing Under Different Fault Locations

Bolhasani¹,

Kamangar²

2014

IJCEE

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“…3(c). For the sake of convenience, the following variables are introduced: Then (9) For infinite supply sources, (9) becomes (10) When the parameters in the Appendix are substituted into (9) and (10), Table II is obtained. It is evident that is far less than and, therefore, hardly influences the secondary arc current.…”

Section: Effect Of Ground Resistance With Frbsmentioning

confidence: 99%

The Effect of Ground Resistance on Secondary Arc Current on an EHV Transmission Line

Shi

Han

et al. 2005

IEEE Trans. Power Delivery

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After a single-phase-to-ground fault occurs on an extremely-high-voltage transmission line, the duration of the secondary arc mainly depends on the magnitude of the secondary, which is determined by the ground resistance and the system's equivalent impedance at the fault location. In this paper, analytical formulas for calculating the system's equivalent impedance have been developed for three different arc-extinguishing techniques. These formulas show a satisfactory accuracy in comparison with electromagnetic transient program (EMTP) simulations. Then, the effect of the ground resistance on the secondary arc current has been evaluated by comparing it with the system's equivalent impedance. The resistance hardly influences the secondary arc current when no arc-extinguishing facility is adopted or when four-reactor banks are employed; while the resistance significantly affects the current when high-speed grounding switches are used.

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