Service life assessment method for ultra-high voltage grid GIS housing containing defects
The invention discloses a service life assessment method for an ultra-high voltage grid GIS housing containing defects. Currently, a dedicated method for assessment on safety and service life of a GIS housing containing defects still lacks. The method comprises structural data acquisition of the ult...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention discloses a service life assessment method for an ultra-high voltage grid GIS housing containing defects. Currently, a dedicated method for assessment on safety and service life of a GIS housing containing defects still lacks. The method comprises structural data acquisition of the ultra-high voltage grid GIS housing, defect feature acquisition of the ultra-high voltage grid GIS housing, defect expanding limit determination of the ultra-high voltage grid GIS housing, material and welded seam performance acquisition of the ultra-high voltage grid GIS housing, fatigue crack extended model establishment of the ultra-high voltage grid GIS housing, monitoring and extraction of working condition feature parameters of the ultra-high voltage grid GIS housing, and fatigue cycle number calculation of the ultra-high voltage grid GIS housing. Structure, defects, material performance and alternating working condition load of the ultra-high voltage grid GIS housing are taken into comprehensive account, and de |
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