Influence of the Operation of the Power Units of Thermal Power Plants in the Maneuvering Mode on the Aging Rate of Power Equipment
DOI:
https://doi.org/10.20998/2078-774X.2016.10.01Анотація
A peculiar feature of the power engineering in Ukraine is a shortage of maneuvering powers; therefore the Nuclear Power Plants available in Ukraine have to use pulverized-coal blocks designed for the basic operation to meet peak loads and for the control on the whole. The current state of power generating equipment was analyzed in compliance with the normative documents approved by the Ministry of Power Engineering and Fuel Industry of Ukraine. The influence of the operation of power units of 200–300 MW in the maneuvering mode has been studied and the predicted residual life in the normal operation mode and in the maneuvering mode of daily start-stop has been calculated. The ageing rate indicators have been calculated and it was established that the equipment aging rate in the maneuvering mode increases three to eight times in comparison with that at the normal operation. It was established that the operation in this mode requires the normative substantiation: the key parameters and criteria of operating conditions should be defined, the software for the technical diagnostics should be introduced, and the additional control (examination) of the technical state of power equipment should be arranged and exercised and the obtained results must be processed. The measures should be taken to provide the safe operation and exercise control over the aging of power plants during the reassigned operation life. Due to this fact and taking into consideration the current state of the equipment the operation in the maneuvering mode in undesirable and requires the development of special normative base, because the available key assets are subjected to a considerable wear.
Посилання
(2005), ND MPE Ukrayiny`. Kontrol` metalu i prodovzhennya terminu ekspluataciyiosnovny`xelementivkotliv,turbinitruboprovodiv teplovy`x elektrostancij. – Ty`pova instrukciya. SOU–NMPE40.17.401:2004 [RD ofMFEU.Metalinspectionand extending operating life of main components of boilers, turbinesandpipelines of thermalpowerplants: SOU-NMPE 40.17.401:2004], GRIFRE, Ministry of fuel and energy of Ukraine,Kiev,Ukraine.
(1985), RTM 108.021.103. Detali parovyh stacionarnyh turbin. Raschet na malociklovuju ustalost' [Details of stationarysteamturbines. Low cycle fatigue calculation], Moscow, Russian.
(1973), RTM 24.020.16-73. Turbiny parovye stacionarnye. Raschet temperaturnyh polej rotorov i cilindrov parovyhturbinmetodom jelektromodelirovanija [Stationary steam turbines. The calculation of the temperature fieldsoftherotorsandthecylinders of steam turbines by electrical analogy method], Moscow, Russian.
(1996), RD 34.17.440–96. Metodicheskie ukazanija o porjadke provedenija rabot pri ocenkeindividual'nogoresursaparovyhturbin i prodlenii sroka ih jekspluatacii sverh parkovogo resursa [Methodological guidelinestoperform workswithinassessmentofindividual service life of steam turbines and its extension beyond the fleetservicelife], Moscow,Russian.
Shulzhenko, N. G. (2011), SOU-N MEV 40.1-21677681-52:2011 Vy`znachennya rozraxunkovogo resursu taocinky`zhy`vuchosti rotoriv ta korpusny`x detalej turbiny`: Metody`chni vkazivky`/ Minenergovugillya Ukrayiny`[Determinationoftheestimated resource and assessment of survivability of rotors and turbine case details:Guidelines],MinistryofFuelandEnergy of Ukraine, Kyiv, Ukraine.
Matsevityi, Yu. M., Shulzhenko, N. G. and Goloschapov, V. N. (2008), Povyshenie jenergojeffektivnostirabotyturboustanovok TJeS i TJeC putem modernizacii, rekonstrukcii i sovershenstvovanie rezhimov ih jekspluatacii[Improvingtheenergyefficiency ofworkof TPP and CHPP turbines by modernization, reconstruction and improvement oftheiroperation modes],Nauk.Dumka,Kiev,ISBN 978-9-660-00850-3, Ukraine.
Berliand, V. I. (1992), ²Obobshhennye rezul'taty issledovanij ciklicheskoj prochnosti parovyh turbin moshhnost'ju 160, 200i300 MVt pri peremennyh rezhimah raboty [Generalized results of research of cyclic strength of steamturbineswithacapacityof160, 200 and 300 MW at different operating conditions]², Teplojenergetika [Thermal energy], no.6,pp. 23–29.
