Functional loss quantification of post-disaster thermal power plants: Functional state function method

Abstract

Power plants are important lifeline engineering in urban construction. To improve their sustaining ability, adaptability, and recovery capabilities to uncertain hazards, it is vital for realizing engineering resilience, which contributes the reduction of economic losses and adverse social impacts. Functional quantitation has become more and more important for the resilience assessment of power plants after disasters. Quantitative evaluation of actual functionality for power plants becomes more significant to the resilience evaluation against disasters. However, it is difficult to understand the relationship between components and systems in power plants, which are composed of different kinds of equipment and pipeline. For thermal power plants, there is little research on the quantification of functional loss after disasters. This paper analyzes the main power generation system in thermal power plants and proposes a novel functional quantitative analysis method, namely functional state method. Quantification method of post-disaster functional loss for the main power generation system is presented. The functional quantification method proposed in this paper can be used further to conduct quantitative analysis of functional recovery, and evaluate resilience of the post-disaster power plants, based on the input-output relationships of components and systems.

Keywords

Power plant / Functional quantification / Functional state function / Post-disaster functional loss / Input-output relationship

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