Scientific and Technical Journal


ISSN Print 2221-3937
ISSN Online 2221-3805
The subject of paper is the methods of solving the actual problem of control the air gap in the hydrogenerators. These methods are used for improve the efficiency work of the hydrogenerators and reduce downtime caused by unscheduled repairs. In case high efficiency control is possible to transition from the planned repairs to repairs according to the the actual state of the generator. The methodology of problem solving in the paper. To solve the problem of control the air gap in the hydrogenerators use computerized specialized measuring control system. In this sуstem can perform analysis of changes in the air gap for each pole of the rotor used specialized software. The objective of the paper. The objective of this paper is to develop hardware and software solution for computerized control system of the air gap in the hydrogenerator for improving the efficiency of control. Foranalysis the changes in the air gap for each pole of the rotor in the system use specialized development software. For obtain measurement data proposed to use an original capacitive sensor that is adapted to the conditions and structural features in the hydrogenerator. Installed sensors is enables to control value of the air gap in the hydrogenerator. Sensors are located in a horizontal plane of 900 at an angle to each other. Solution. Use the computerized measuring equipment with specialized capacitive sensors as primary sensor is the perspective direction for building the systems of control the air gap in the hydrogenerator type СГК 538/160-70M. To convert the analog signal of the capacitive sensor into digital code while maintaining the measurement range is used Capacitance-to-Digital Converter with Temperature Sensor AD7745. For construction of the hardware control system uses original capacitive sensor in combination with Capacitance-to-Digital Converter. For construction of the developed software for control system used graphical development environment LabVIEW. Conclusions. The results of experimental laboratory research proposed and developed software and hardware control system of air gap in the hydrogenerator confirm–working ability the proposed solutions;–possibility for application the proposed and developed software and hardware solution for development the computerized control system the air gap between the stator and rotor in the hydrogenerators in the range 6 ± 4 mm of air gap.

1. Alekseev, B.A. (2002) Determining the status (diagnostics) of large hydro generators [Opredelenie sostoyaniya (diagnostika) krupnykh gidrogeneratorov], 2nd ed., ster., NTs ENAS, Moskow, 144 p.

2. Babak, S.V., Myslovich, M.V., Sysak, R.M. (2015), “The statistical diagnostics of the electrotechnical equipment” [Statisticheskaya diagnostika elektrotekhnicheskogo oborudovaniya], IED NANU, Kiev, 456 p.

3. Zaitsev, I. O. (2016), “Thecomputerizedmonitoringsystemofthemechanicalparametersofelectricalequipment” [Komp'juteryzovanasystemamonitoryngumekhanichnykhparametrivelektroobladnannja], In: Kontrol' i upravlinnja v skladnykh systemakh,Vіnnitsa,October, 3-6, 2016, ІVCVNTU, Vіnnitsa, pp. 116 –118.

4. Zaitsev, I. O., Levytskii, A. S., Kromplyas, B. A. (2016), “Experimentalandtheoreticalresearchofcapacitivecensorformeasurementairgaphydro-generatorsbasedonregressionanalysis” [Eksperimental'no-teoretichnі doslіdzhennyajеmnіsnogosensorupovіtryanogozazorudlyagіdrogeneratorіvmetodamiregresіjinogoanalіzu], Vymirjuval'nataobchysljuval'natehnikavtehnologichnyhprocesah, № 2, pp. 34 – 40.

5. Zaitsev, I. O., Levytskii, A. S., Kromplyas, B. A. (2016), “DeterminationoftheresponsecharacteristicofthecapacitivesensoroftheairgapinthehydrogeneratorСГК 538/160-70М” [Viznachennyafunktsії peretvorennya jemnіsnogosensorapovіtryanogozazoruvgіdrogeneratorі SGK 538/160-70M], Zb. nauk. pr. ІED NANU, № 43,   pp. 134–136

6. Levytskii, A.S. (2010), “Enhancing the effectiveness monitoring and diagnosis by the use capacitive parameters meter mechanical defects in the powerful hydrogenerator”   [Pidvyshhennja efektyvnosti kontrolju ta diagnostyky potuzhnykh gidrogeneratoriv za rahunok zastosuvannja jemnisnykh vymirjuvachiv parametriv mekhanichnykh defektiv], Gidroenergetyka Ukrajiny, № 4, pp. 10–13.

7. Levytskii, A.S, Fedorenko, G.M., Gruboj, O.P. (2011), “Monitoring of the status of powerful hydro and turbo generators using capacitive meter for the parameters of mechanical defects”    [Kontrol' stanu potuzhnykh gidro- ta turbogeneratoriv za dopomogoju jemnisnykh vymirjuvachiv parametriv mekhanichnykh defektiv],  ІED NANU, Kyi'v, 242 р.

8. Travis J., Kring J. (2010), LabVIEW for everyone: graphical programming made easy and fun,  Trans. from Eng. 4th ed. [LabVIEW dlja vseh. Per. s angl. 4th ed.],DMK Press, Moscow, 880 р.

9. Griščenko Marina. Air gap monitoring unit generator to advance vibration diagnostic procedure, Summary of the Doctoral Thesis, RTU, R, 20 p.

10. Volkovas, V., Mikalauskas R., Eidukeviciute, M. (2004), Air gap measuring system for purpose of diagnostics and condition monitoring. In: 3rd International Congress of Technical Diagnostics, Poznan, September, 6-9, 2004, PTDT, Poznan, vol. 30, tom 2, pp. 169–174.

11. Levytskii, A.S., Zaitsev, I.O., Kromplyas, B.A. (2016), “Capacitive sensor for measuring air gap between stator and rotor generators” [Jemnisnyj sensor dlja vymirjuvannja povitrjanogo zazoru v generatorakh], MKI G01B7/14 № a 2016 03404

12. Ahead of What's PossibleTM (2016), 24-Bit Capacitance-to-Digital Converter with Temperature Sensor, available at: en/technical-documentation/data-sheets/AD7745_7746.pdf 

13. VMTM (2015), Air Gap. Capacitive Measuring Chains, available at:  http://vibrosystm. com/ wp-content/uploads/9628-25D1A-103.pdf

14. MCTM (2016), Air Gap Monitoring System, available at: sensors/airgap-sensors.html

15. Iris Power AGTracIITM (2013), Continuous On-Line Air Gap Monitoring for Hydro Generators , available at: Brochures/AGTracII%20V1-Mar%202013.pdf

16. Nower D.  (2013), Online Vibration Monitoring, available at:  http://www2. PM % 20Articles/ MaintWorld_May13_Online Vib Monitor.pdf

17. VSM (2016), On-line Monitoring of Hydro Generating Units for Optimized Operation and Maintenance, available at:    http://www.vibrosystm. com /pdf/ zoom_e.pdf

18. Rolim F., Tetreault A., Marshall R. (2004), Air gap monitoring system key element to correctly diagnose generator, available at:    http: //

19. Emerson (2016), Process Management,  available at: Docs/kip.pdf

20. Emerson (2016), Sistema intellektual'nogo kontrolya sostoyaniya mashinnogo oborudovaniya Smart Machinery Health Management, available at: ProductBrochuresAndFlyers/6500_br_OnlineHydroMach_ru.pdf

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