Risk Assessment Method of UHV AC/DC Power System under Serious Disasters

Rishang Long and Jianhua Zhang
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Rishang Long: State Key Laboratory of New Energy Power System, North China Electric Power University, Beijing 102206, China
Jianhua Zhang: State Key Laboratory of New Energy Power System, North China Electric Power University, Beijing 102206, China

Energies, 2016, vol. 10, issue 1, 1-13

Abstract: Based on the theory of risk assessment, the risk assessment method for an ultra-high voltage (UHV) AC/DC hybrid power system under severe disaster is studied. Firstly, considering the whole process of cascading failure, a fast failure probability calculation method is proposed, and the whole process risk assessment model is established considering the loss of both fault stage and recovery stage based on Monte Carlo method and BPA software. Secondly, the comprehensive evaluation index system is proposed from the aspects of power system structure, fault state and economic loss, and the quantitative assessment of system risk is carried out by an entropy weight model. Finally, the risk assessment of two UHV planning schemes are carried out and compared, which proves the effectiveness of the research work.

Keywords: ultra-high voltage (UHV); chain failure; risk assessment; index system (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2016
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