Journal ArticleDOI
Cool the Generators: System Reliability and Fault Tree Analysis of Hydrogen Cooling Systems
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TLDR
In this article, a comprehensive hydrogen cooling system (H2) is presented for the cooling of n # 250-MW generators of fossil-fuel power plants, which is validated using RS-View32 Works, a real-time automation platform.Abstract:
A comprehensive hydrogen (H2) cooling system (HCS) is presented for the cooling of n # 250-MW generators of fossil-fuel power plants. A novel six stage hot redundant structure (S2HRS)-based HCS clubbed with highly reliable and efficient process control and instrumentation system is proposed for the cooling of large generators in integrated gasification combined cycle power plants (CCPPs). This article provides a comparison between the proposed and the existing systems in terms of system reliability and fault tree analysis (FTA). The effectiveness of real-time featured proposed HCS is validated by computer simulation using RS-View32 Works, a real-time automation platform.read more
Citations
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Journal ArticleDOI
Design for Reliability of Power Electronics for Grid-Connected Photovoltaic Systems
TL;DR: In this article, the main life-limiting factors of power electronics for grid-connected photovoltaic (PV) systems are discussed, where how the power converters are stressed considering real-field mission profiles.
Journal ArticleDOI
Reliability modeling and availability analysis of combined cycle power plants
TL;DR: In this paper, a reliability model for the combined cycle power plants (CCPP) is proposed to evaluate the reliability of the overall CCPP from an engineering system perspective, and sensitivity indices are proposed to identify the plant critical components, i.e., those with the most considerable influences on the system reliability and availability targets.
(Applied Mathematics and Computation,183(2):1310-1322)Comparison of Reliability and the Availability between Four Systems with Warm Standby Components and Standby Switching Failures
TL;DR: This work develops the explicit expressions for the mean time-to-failure, MTTF, and the steady-state availability, A T (∞), for four configurations of warm standby components and standby switching failures based on their reliability and availability.
Journal ArticleDOI
Theoretical investigations of permeability and selectivity of Pd–Cu and Pd–Ni membranes for hydrogen separation
TL;DR: In this article, density functional theory and molecular dynamics calculations are used to evaluate the selectivity of metal alloys membranes for gas separation, and the results demonstrate that both Pd-Cu and Pd−Ni membranes exhibit excellent selectivity to H2 over N2, CO, CO2, CH4, H2S at varied temperatures.
Journal ArticleDOI
Reliability Modeling of Run-of-the-River Power Plants in Power System Adequacy Studies
TL;DR: In this paper, an analytical reliability model for run-of-the-river (ROR) power plants was developed with the intention of being used in adequacy studies of power systems, and the well-known technique of fuzzy c-means clustering was employed to find the optimal states of the resultant multistate reliability model.
References
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Journal ArticleDOI
Reliability engineering: Old problems and new challenges
TL;DR: The first recorded usage of the word reliability dates back to the 1800s, albeit referred to a person and not a technical system as discussed by the authors, and since then, the concept of reliability has become a pervasive attribute worth of both qualitative and quantitative connotations.
Journal ArticleDOI
On the concept of e-maintenance: Review and current research
TL;DR: This paper outlines the basic ideas within the e-maintenance concept and then provides an overview of the current research and challenges in this emerging field.
Journal ArticleDOI
Probabilistic Algebraic Analysis of Fault Trees With Priority Dynamic Gates and Repeated Events
TL;DR: This paper focuses on a sub-class of Dynamic Fault trees, called Priority Dynamic Fault Trees (PDFTs), containing only static gates, and Priority Dynamic Gates (Priority-AND, and Functional Dependency) for which a priority relation among the input nodes completely determines the output behavior.
Journal ArticleDOI
System architecture for process automation: Review and trends
TL;DR: How process automation system architectures have evolved and discusses future trends are reviewed, drawing an analogy between the synergistic new technologies being developed today and the technology landscape of the early 1970s that resulted in the first DCS systems.
Journal ArticleDOI
A New Real-Time Reliability Prediction Method for Dynamic Systems Based on On-Line Fault Prediction
TL;DR: This paper introduces a new real-time reliability prediction method for dynamic systems which incorporates an on-line fault prediction algorithm and shows that the effects of the system, and measurement noises on the fault estimates are greatly reduced by exponential smoothing, which indicates that the comparatively high accuracy of the fault Estimates & predictions is guaranteed.
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