Calculation of fault current-division factors and assessment of earth-grid safety at an independent power producer station

Chien-Hsing Lee, Cheng Nan Chang, Yaw Juen Wang

研究成果: Article同行評審

3 引文 斯高帕斯(Scopus)

摘要

This paper calculates fault current-division factors and assesses earth-grid safety at 17.1/161-kV Chiahui independent power producer (IPP). A method based on the grid current is proposed to calculate fault current-division factors and the results are compared with the Endrenyi method as well as the current-distribution electromagnetic-grounding and soil-structure analysis (CDEGS) program. Since the coupling effect of overhead earth wires to phase conductors was not taken into account by the Endrenyi method, the computed fault current-division factor will be greater than those obtained by the proposed method and CDEGS program. Moreover, mesh and step voltages are computed to compare with minimum touch and step voltages for assessing earth-grid safety, respectively. As a result, the design of earthing systems at 17.1/161-kV IPP station is safe for humans with 50 kg and 70 kg body weight. Crown

原文English
頁(從 - 到)639-650
頁數12
期刊International Journal of Electrical Power and Energy Systems
31
發行號10
DOIs
出版狀態Published - 2009 十一月 1

All Science Journal Classification (ASJC) codes

  • 能源工程與電力技術
  • 電氣與電子工程

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