Reliability assessment of wind turbine operating concepts using reliability block diagrams (RBDs)

El-Metwally, M.M.; EL-Shimy, M.; Mohamed, A.; Elshahed, Mostafa; Sayed, A.

doi:10.1109/mepcon.2017.8301216

Cited by 14 publications

(12 citation statements)

References 12 publications

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“…Analisis keandalan jaringan distribusi biasanya cukup sederhana sehingga bisa dianalisa menggunakan diagram blok keandalan (reliability block diagram). Langkah-langkah analisa keandalan dengan diagram blok keandalan yaitu : menetapkan kriteria kegagalan, memodelkan diagram blok keandalan, menganalisis modus kegagalan dan perhitungan keandalan sistem [9].…”

Section: Keandalan Jaringan Distribusiunclassified

Rekonfigurasi Jaringan Distribusi Listrik Universitas Andalas Untuk Memperbaiki Indeks Energy Not Supplied

Asri

Adrianti

Nasir

2019

JNTE

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Penelitian ini bertujuan untuk memperbaiki keandalan jaringan distribusi listrik Universitas Andalas dengan rekonfigurasi jaringan. Perhitungan keandalan dilakukan menggunakan metode blok diagram seri-paralel. Parameter keandalan yang dihitung yaitu laju kegagalan, annual downtimes serta Energy Not Supplied (ENS). Rekonfigurasi dilakukan dengan fokus pada titik-titik beban yang memiliki indeks ENS yang terbesar. Titik-titik beban tersebut direkonfigurasi dengan memindahkan supply dayanya ke gardu yang lebih dekat dengan penambahan saluran baru. Akibatnya bentuk jaringan berubah menjadi konfigurasi loop, tetapi pada saat beroperasi jaringan tetap dalam konfigurasi radial. Dari rekonfigurasi yang diusulkan, nilai ENS sistem distribusi Universitas Andalas berhasil diturunkan dari nilai tertinggi 315,191 kWjam/tahun menjadi 142,864 kWjam/tahun. Sehingga lama dan frekuensi pemadaman listrik di titik-titik beban berhasil dikurangi yang pada akhirnya diharapkan dapat membantu meningkatkan produktivitas di Universitas Andalas

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Section: Keandalan Jaringan Distribusiunclassified

Rekonfigurasi Jaringan Distribusi Listrik Universitas Andalas Untuk Memperbaiki Indeks Energy Not Supplied

Asri

Adrianti

Nasir

2019

JNTE

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“…Researchers have used several reliability methods to evaluate the reliability of the WECS. Among them, reliability block diagram (RBD) and fault tree analysis (FTA) as seen in earlier reliability work [14][15][16] [17]. In FTA, a logical diagram is used to interpret the physical layout of the system.…”

Section: Introductionmentioning

confidence: 99%

Ranking Subassemblies of Wind Energy Conversion Systems Concerning Their Impact on the Overall Reliability

et al. 2021

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In this paper, an extensive reliability analysis of wind energy conversion systems (WECS) is presented. Elaborate the analysis is presented starting from the subassembly level to the subsystem level, then the system or the overall WECS. The fault tree method with a Weibull probability distribution function is introduced as a complete model for estimating the wind turbine subassemblies' reliability. The model was tested using a massive dataset of failure rates of various wind turbine subassemblies derived from relevant literature, comprising various operating concepts and the different climate conditions. In addition, ranking for various subassemblies of wind energy conversion systems concerning their impact on the overall system reliability is also presented in this paper to identify the weak items and subsystems. This identification guides the designers and planners in setting the appropriate maintenance strategies to increase the overall reliability of the considered systems and achieve a desired level of reliability. The results indicate that the model has practical applications for managing wind turbines, and the implementation demonstrates the proposed approach's effectiveness and efficiency, which may significantly enhance the WECS reliability.

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“…Age, cycling, and competition are making the power plant operators find ways to evaluate the performance of their assets and improve their reliability. [1][2][3] Understanding how the assets behave in the future helps the operators to develop a proactive maintenance regimen and make prudent run repair decisions. Hence, the main objective of this paper is to describe the application of the theory, process, and tools to help power plant engineers to develop Risk-Based Maintenance programs to improve the reliability of their plant systems.…”

Section: Introductionmentioning

confidence: 99%

“…As more and more renewables and gas plants are taking a significant share of the generation portfolio, the coal‐fired plants are being subjected to increased cycling. Age, cycling, and competition are making the power plant operators find ways to evaluate the performance of their assets and improve their reliability 1‐3 . Understanding how the assets behave in the future helps the operators to develop a proactive maintenance regimen and make prudent run repair decisions.…”

Section: Introductionmentioning

confidence: 99%

A dynamic process for evaluating the reliability of fossil power plant assets

Palakodeti

Raju

Guo³

2020

Engineering Reports

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Budgets and maintenance programs in fossil power plants are frequently set based on engineering judgment rather than a Probabilistic Risk Assessment (PRA). Fossil power plants seldom use PRA due to a lack of practical processes, especially when field reliability data are not readily available. In the absence of field data, using general industry data may not be right for conducting PRA for a given organization as the operation and maintenance conditions significantly vary between organizations. To have a successful PRA, an organization needs to use its own field data, and have an efficient process for its organization. Studies have suggested using field data provides a robust model and accurate results. Use of Reliability Block Diagrams for Reliability, Availability, and Maintainability analysis is not new. However, applications of these techniques are new to fossil power plants. In this paper, we propose a practical process by integrating several existing reliability techniques for fossil plants to apply PRA. The process was tested at many power plants, and the results aligned well with the actual values. The methodology outlined in this paper is a forward-looking tool for managers to predict system reliability, and proactively develop maintenance plans and budgets.

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Reliability assessment of wind turbine operating concepts using reliability block diagrams (RBDs)

Cited by 14 publications

References 12 publications

Rekonfigurasi Jaringan Distribusi Listrik Universitas Andalas Untuk Memperbaiki Indeks Energy Not Supplied

Rekonfigurasi Jaringan Distribusi Listrik Universitas Andalas Untuk Memperbaiki Indeks Energy Not Supplied

Ranking Subassemblies of Wind Energy Conversion Systems Concerning Their Impact on the Overall Reliability

A dynamic process for evaluating the reliability of fossil power plant assets

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