Semiparametric Statistical Analysis of the Blade Tip Timing Data for Detection of Turbine Rotor Speed Instabilities

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F18%3A00490148" target="_blank" >RIV/61388998:_____/18:00490148 - isvavai.cz</a>

Alternative codes found

RIV/67985807:_____/18:00490148

Result on the web

<a href="http://dx.doi.org/10.1002/qre.2327" target="_blank" >http://dx.doi.org/10.1002/qre.2327</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/qre.2327" target="_blank" >10.1002/qre.2327</a>

Result language

angličtina

Original language name

Semiparametric Statistical Analysis of the Blade Tip Timing Data for Detection of Turbine Rotor Speed Instabilities

Original language description

In this paper, we propose an extension of an existing standard approach to the blade tip timing data when analyzing turbine rotor vibrations. Instabilities related to the non‐constant trigonometric coefficients at prominent frequencies might not be noticed in the traditional analyses. Our methodology is based on time‐varying coefficient statistical models, and hence it allows a full formalization of the estimation and other inferential tasks (uncertainty assessments, hypothesis tests etc.). First, we formulate a univariate generalized additive model that is useful for investigation of vibration behavior of individual blades. It can extract trajectories of the trigonometric coefficients. Using the trajectories, one can investigate time changes of power at a given frequency. In the second approach, we use a multivariate model for simultaneous assessment of all of the rotor blades. The model acknowledges similarity of the vibration behavior of closely located blades. It is formulated as a state‐space model, and hence it allows for a wide range of prediction, smoothing, and filtering tasks. We illustrate the performance and practical usefulness of our models on real blade tip timing turbine monitoring data obtained from the Czech nuclear power plant Temelin.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20201 - Electrical and electronic engineering

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Quality and Reliability Engineering International

ISSN

0748-8017

e-ISSN

—

Volume of the periodical

34

Issue of the periodical within the volume

7

Country of publishing house

GB - UNITED KINGDOM

Number of pages

7

Pages from-to

1308-1314

UT code for WoS article

000445334700002

EID of the result in the Scopus database

2-s2.0-85053641718