Priority analysis for risk factors of equipment in a hydraulic turbine generator unit

Beibei Xu, Diyi Chen, Huanhuan Li, Keyun Zhuang, Xiao Hu, Jinwei Li, Hans Ivar Skjelbred, Jiehong Kong, Edoardo Patelli

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


Ensuring the safe operation of hydropower stations is one of the key challenges for electric generation. Clearly the safe operation of such systems can only be archived with proper and effective maintenance scheduling. The objective of this study is to analyze, rank and prioritize the risk factors responsible for equipment failures of a hydraulic turbine generator unit (HTGU) based on operating data and expert elicitation. Here a simple qualitative risk evaluation model is proposed able to consider seven typical failures in HTGU. The proposed tool is applied for the risk prioritization of equipment failures, e.g. shaft torsion, misalignment, rotating fault, axis bend, runner fault, water guide, and wicket gate of a hydropower station in China. The obtained results have been compared against the actual statistics of equipment failures of a hydropower station in China, considered showing good agreement. All of these results provide theoretical guidance for digitalization realization of equipment failures.

Original languageEnglish
Pages (from-to)1-7
Number of pages7
JournalJournal of Loss Prevention in the Process Industries
Early online date9 Jan 2019
Publication statusPublished - 31 Mar 2019


  • analytical hierarchy process
  • equipment failures
  • hydraulic turbine generator unit
  • priority
  • risk factors


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