Assesment of group regulation feasibility in thermal power plant auxiliaries capacity control
DOI:
https://doi.org/10.15587/1729-4061.2020.218586Keywords:
variable-frequency drive, group regulation, centrifugal mechanism, auxiliariesAbstract
The method of group capacity regulation of centrifugal mechanisms is proposed to solve the problem of increasing the energy efficiency of thermal power plant auxiliaries. The method is based on using a group frequency converter for basic capacity regulation of centrifugal mechanisms. Additional regulation is commonly carried out by throttling, bypassing or changing the guide vane opening angle.
Analysis of auxiliary power consumption showed that due to ineffective regulation methods, the share of power consumption can reach 50 %.
A mathematical model of the centrifugal mechanism that allows for studying various regulation methods is developed. The task of finding optimal control parameters for a group of centrifugal mechanisms that ensure power boiler operation is stated and solved. By the results obtained, it was determined that group capacity regulation of boiler draft mechanisms is most rational. For the feed pump, an individual variable-frequency drive shall be used.
In contrast to the individual variable-frequency drive, the introduction of the group regulation method requires less investment. This method can significantly reduce the auxiliary power consumption of thermal power plants. The projected decrease in auxiliary power consumption is 10.7 %.
The results show the high efficiency of the group capacity regulation of centrifugal mechanisms, so this method can become a promising direction in increasing the energy efficiency of thermal power plantsReferences
Mandi, R. P., Yaragatti, U. R. (2012). Energy efficiency improvement of auxiliary power equipment in thermal power plant through operational optimization. 2012 IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES). doi: https://doi.org/10.1109/pedes.2012.6484459
Tamminen, J., Viholainen, J., Ahonen, T., Ahola, J., Hammo, S., Vakkilainen, E. (2013). Comparison of model-based flow rate estimation methods in frequency-converter-driven pumps and fans. Energy Efficiency, 7 (3), 493–505. doi: https://doi.org/10.1007/s12053-013-9234-6
Narkhede, J., Naik, S. (2016). Boiler feed pump control using variable frequency drive. International Research Journal of Engineering and Technology (IRJET), 3 (4), 2444–2449. Available at: http://www.academia.edu/download/54639146/IRJET-V3I4583.pdf
Kruhol, M., Lasurenko, O., Vanin, V., Tomashevskyi, R. (2019). Group Regulation Efficiency Analysis for Thermal Power Plant Auxiliaries. 2019 IEEE 6th International Conference on Energy Smart Systems (ESS). doi: https://doi.org/10.1109/ess.2019.8764242
Iyer, J., Tabarraee, K., Chiniforoosh, S., Jatskevich, J. (2011). An improved V/F control scheme for symmetric load sharing of multi-machine induction motor drives. 2011 24th Canadian Conference on Electrical and Computer Engineering(CCECE). doi: https://doi.org/10.1109/ccece.2011.6030711
Jeftenic, B., Bebic, M., Statkic, S. (2006). Controlled multi-motor drives. International Symposium on Power Electronics, Electrical Drives, Automation and Motion, 2006. SPEEDAM 2006. doi: https://doi.org/10.1109/speedam.2006.1649985
Mitrovic, N., Kostic, V., Petronijevic, M., Jeftenic, B. (2009). Multi-Motor Drives for Crane Application. Advances in Electrical and Computer Engineering, 9 (3), 57–62. doi: https://doi.org/10.4316/aece.2009.03011
Mandi, R. P., Yaragatti, U. R. (2008). Enhancing energy efficiency of Induced Draft Fans in Thermal Power Plants. Proceedings of the Eighth IASTED International Conference Power and Energy Systems (EuroPES 2008). Corfu, 176–182.
Kanyuk, G. I., Mezerya, A. Yu., Laptinov, I. P. (2014). A model of energy saving control using the discharge units of thermal power stations. Вісник NTU “KhPI”. Seriya: Enerhetychni ta teplotekhnichni protsesy y ustatkuvannia, 12 (1055), 90–97. Available at: http://repository.kpi.kharkov.ua/bitstream/KhPI-Press/8964/1/vestnik_HPI_2014_12_Kanyuk_Model.pdf
Carlson, R. (2000). The correct method of calculating energy savings to justify adjustable-frequency drives on pumps. IEEE Transactions on Industry Applications, 36 (6), 1725–1733. doi: https://doi.org/10.1109/28.887227
Mrzljak, V., Blecich, P., Anđelić, N., Lorencin, I. (2019). Energy and Exergy Analyses of Forced Draft Fan for Marine Steam Propulsion System during Load Change. Journal of Marine Science and Engineering, 7 (11), 381. doi: https://doi.org/10.3390/jmse7110381
Shuping, W., Jiantao, Y., Wei, L., Xiaofeng, D., Zinian, C. (2012). Energy efficiency evaluation investigation on high voltage inverter retrofit for fans and pumps in power plants. Paris.
Kruhol, N., Lasurenko, O., Vanin, V. (2020). An Algebraic Model of Gas-Hydraulic Network of Mechanisms with Electric Drive in the Problem of Thermal Power Plant Auxiliaries Optimization. 2020 IEEE KhPI Week on Advanced Technology (KhPIWeek). Kharkiv, 188–192. doi: https://doi.org/10.1109/KhPIWeek51551.2020.9250085
Van Huffel, S., Vandewalle, J. (1991). The Total Least Squares Problem: Computational Aspects and Analysis. SIAM, 288. doi: https://doi.org/10.1137/1.9781611971002
Vanin, V. A., Vanin, B. V., Kruhol, M. M. (2020). Mathematical modeling of thermal power plant's boiler air-gas flow path regulation modes. Visnyk NTU “KhPI”. Seriya: Matematychne modeliuvannia v tekhnitsi ta tekhnolohiyakh, 1 (1355), 8–15. Available at: http://repository.kpi.kharkov.ua/bitstream/KhPI-Press/47512/1/vestnik_KhPI_2020_1_MMTT_Vanin_Matematicheskoe.pdf
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Copyright (c) 2020 Viktor Vanin, Oleksandr Lasurenko, Mykola Kruhol
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