Centrifugal compressor surge detecting method based on wavelet analysis of unsteady pressure fluctuations in typical stages

Izmaylov, R; Lebedev, A. A.

doi:10.1088/1757-899x/90/1/012052

Cited by 5 publications

(3 citation statements)

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“…As described above, anti-surge regulator maintains the compressor in the stable operating ranges [22]- [26]. Any regulation basically is based on measurement of flow through the machine and should meet the basic requirements: i) machine must be protected by the system under all operating conditions, where included start and stop sequences; ii) surge control line should be as close as possible to a parallel displacement of the surge limit line considering the safety and efficiency requirements; iii) for the efficient operation of compressor, surge control line must not get closer to the surge limit line more than it is necessary.…”

Section: Figure 1 Operating Point Position Control By Anti-surge Regulatormentioning

confidence: 99%

Centrifugal compressor anti-surge control system modelling

Batayev

Suleimenov

Batayeva³

2022

IJECE

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<span>From the middle of XX century, natural gas is an important mineral, widely used in the energy sector. Transportation of natural gas is carried out via gas pipeline networks and compression stations. One of the key features which need to be implemented for any centrifugal gas compressor is a surge protection. This article describes the method and develops software application intended for simulation and study of surge protection system of a centrifugal compressor used in modern gas compression stations. Within the article research method, modelling environment’s block diagram, proposed algorithms and results are described. For surge cases control and prediction, Anti-surge control block implemented which based on practical experience and centrifugal compressor theory. To avoid complicated energy balancing differential equations the volumetric flow calculation algorithm proposed which is used in combination with Redlich-Kwong equation of state. Developed software’s adequacy test performed through modeling of one-stage gas compression scheme at rated speed with comparison of parameters with reference commercial software and verification of the anti-surge control system.</span>

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Section: Figure 1 Operating Point Position Control By Anti-surge Regulatormentioning

confidence: 99%

Centrifugal compressor anti-surge control system modelling

Batayev

Suleimenov

Batayeva³

2022

IJECE

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“…The problem can also arise in the emergence of the need to change the strategic or tactical or operational objectives of the operation of the production system. These problem situations need to be fixed in real time (RT), that is, to state the fact of their detection at the time of their occurrence, and to make decisions on their resolution with a speed commensurate with the speed of the execution or control processes (Izmaylov et al, 2015). Fixation (ascertaining the facts of occurrence), an analysis of these problem situations and decision-making on their resolution in the RT can be carried out on the basis of the development and use of specialized recognition systems.…”

Section: The Theoretical Bases Of Ascertaining and Recognition Of Problematic Situationsmentioning

confidence: 99%

Recognition of the Problematic Situations in Industrial Systems with Intellectual Support

Volochienko¹,

Фалько²,

Postnikova³

2019

Int J Math, Eng, Manag Sci

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The factors responsible for the emergence of problematic situations in the company's production, economic, financial and economic activities are the unacceptable controlled disturbances of the external and internal environment of the enterprise and the unacceptable deviations of the actual states of the execution or management processes from the required ones, impeding (creating threats) or contributing (creating potential opportunities) achievement of the established objectives of the functioning and development of the enterprise. The essence of recognition of problem situations is considered and analyzed. A specialized system for recognizing problematic production situations is presented as a complex dynamic automated (automatic) system that realizes in real time the transformation of input information about a problem situation that has arisen in the course of production and economic activity into output information about its belonging to a certain reference class of problem production situations. Examples are given of the use of specialized systems for recognizing problematic production situations in the operational management of production, innovation processes and processes of functional maintenance of production and innovation processes implemented at the enterprise. Named the main tasks solved in the design, creation and operation of specialized systems for recognizing problematic production situations, and the methods used in the course of solving them. The advantages of using specialized systems for recognizing problem situations in the production and economic activities of production systems with intellectual support are indicated.

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“…Moreover, a number of scientific publications [9,10,11,12,13,14,15,16,17] show the efficiency of using computational methods in the design and study of centrifugal compressors low-flow rate stages. Computational methods are also used in the calculation of such an important phenomenon as surging in centrifugal compressors [18,19]. Computational methods are widely used in modeling the working processes of turbomachines [20,21].…”

Section: Introductionmentioning

confidence: 99%

Head Math Model For The Low-Flow Impellers Of The Centrifugal Compressors

Ivanov

Kozhukhov

Nguyen³

2019

E3S Web Conf.

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A new mathematical model has been developed to determine the coefficient of internal and theoretical head in the variant design of the low-flow rate centrifugal compressors impellers. A parametric study of the flow part of the impeller is carried out. In total 1620 impellers are numericaly simulated. As a result, a numerical database of gas dynamic and geometric parameters was developed. Due to an a priori analysis, the relations of parameters with the geometric shape of the flow part are determined. The mathematical model is developed using gas-dynamic parameters and relations determined from numerical database. Using centrifugal compressor stage digital twins, a generalizing relationship has been developed to determine the complex of friction and leakage losses.The reliability of the math model is validated by the comparison with experimental data and the results of numerical experiment in digital twins, which are not involved in the model. The application of the head math model is determined in the range of the conditional flow coefficient 0.006<Φd<0.02 and the theoretical head coefficient 0.60 <ψt<0.72.

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Centrifugal compressor surge detecting method based on wavelet analysis of unsteady pressure fluctuations in typical stages

Cited by 5 publications

References 1 publication

Centrifugal compressor anti-surge control system modelling

Centrifugal compressor anti-surge control system modelling

Recognition of the Problematic Situations in Industrial Systems with Intellectual Support

Head Math Model For The Low-Flow Impellers Of The Centrifugal Compressors

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