Nonoptimum compensation schemes for single pole reclosing on EHV double circuit transmission lines

Thomann, Guillaume; Lambert, S.R.; Phaloprakarn, S.

doi:10.1109/61.216872

Cited by 15 publications

(1 citation statement)

References 12 publications

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“…According to works Thomann et al (1993) or Nayak et al (2006) successful arc extinction would apparently be expected after 0.5 s if the secondary arc current is <40 A and the rate of rise of recovery voltage does not exceed 10 kV/ms. Assuming sinusoidal (50 Hz) recovery voltage, the permissible voltage rate corresponds to rms value equal to 22.6 kV.…”

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confidence: 98%

Nonlinear secondary arc model use for evaluation of single pole auto-reclosing effectiveness

Klucznik

Lubośny

Dobrzyński

et al. 2015

COMPEL

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Purpose -The purpose of this paper is to discuss two evaluation methods of single pole autoreclosing process effectiveness in HV transmission lines. Secondary arc current and recovery voltage results obtained by load flow calculation are compared to the results obtained by the time domain simulations. Moreover, a nonlinear secondary arc implementation is presented. Design/methodology/approach -A computer simulation studies were performed using DIgSILENT PowerFactory ® software to analyse phenomena during single phase to earth short circuit and during single pole circuit breaker opening. Possibilities of electric arc extinction for different earthing solutions of shunt reactors were examined. Findings -The authors indicate, that precise representation of secondary electric arc in power system studies could lead to different conclusion than analysis carried out on simplified arc models. Recommendations for line construction (i.e. earthing reactor installation) and line operation (i.e. prolongation of dead time during auto-reclosing) based on time domain simulations are less restrictive than resulting from the traditional steady-state calculation approach. Originality/value -An implementation of mathematical model of nonlinear secondary arc for DIgSILENT PowerFactory ® software is presented. The model could be used during the process of design of HV transmission line, to assess its proper operation, to calculate dead time during single pole reclosing or to evaluate the necessity of installing additional earthing reactors.

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confidence: 98%