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YANG Yingchun, JIAO Zonghan, DAI Keshun. Fracture Causes of Strain Clamps for Transmission Line[J]. PHYSICAL TESTING AND CHEMICAL ANALYSIS PART A:PHYSICAL TESTING, 2021, 57(8): 54-57. DOI: 10.11973/lhjy-wl202108012
Citation: YANG Yingchun, JIAO Zonghan, DAI Keshun. Fracture Causes of Strain Clamps for Transmission Line[J]. PHYSICAL TESTING AND CHEMICAL ANALYSIS PART A:PHYSICAL TESTING, 2021, 57(8): 54-57. DOI: 10.11973/lhjy-wl202108012
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Fracture Causes of Strain Clamps for Transmission Line

  • Electric Power Research Institute of Yunnan Power Co., Ltd., Kunming 650217, China

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  • Received Date: July 28, 2020
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    • Abstract
  • The strain clamps of a 500 kV transmission line fractured during operation. The fracture causes of strain clamps were analyzed by means of chemical composition analysis, geometric dimension measurement, fracture analysis and mechanical simulation calculation. The results show that the root of the strain clamps was lconstrained locally, and the stress concentration occurred at the corner of the strain clamps when it is under large stress. The crack propagated under the action of alternating stress caused by wind force, and fatigue fracture occurred.
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    • References (13)
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