Year: 2025
Type: conference-paper
Abstract: . Valve hall is the core system of converter stations and is critical for the operation of power systems. It is necessary to conduct seismic reliability assessments based on real response data. Traditional system reliability assessments are based on the response states of individual structures and the functional dependencies between them, typically assuming that the response states of different structures are completely independent. However, complex interactions exist between system components, meaning that such assumptions may lead to inaccurate assessment results. Copula method provides an effective tool for modeling the dependency structure between variables. By developing a detailed finite element model of the valve hall system, the actual response states of various equipment under seismic conditions are simulated. D-Vine Copula model is used to construct the dependency structure among the equipment response states, enabling a seismic reliability assessment of the valve hall system that accounts for equipment correlations. Comparisons reveal that reliability assessment methods based on the assumption of complete independence among components tend to underestimate the seismic performance of the valve hall system. This further confirms the necessity of considering the correlations between the response states of components in reliability assessments.
Source: Materials research proceedings
Author: Xinzhu Qiao
Institution: Tongji University
Language: English
Subfield: Civil and Structural Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W4408405747