Abstract
The article considers the questions of defining economically viable conditions of repair of the main equipment (power boilers and turbo-generators) of industrial heat power plants, the hallmark of which is its use for the purchase of energy (natural gas, coal) and secondary resources (coke oven, blast furnace, converter gases) with non thermal circuit, with the generators from units to tens of megawatts.
The developed optimization technique makes it possible to make optimal schedules for the output in the repair of generators and boilers according to the criterion of the minimum cost for the production of live steam necessary to cover the thermal and electrical load in the summer and winter of the power plant. In order to improve the accuracy of the calculations, the research group used technical and economic models of boilers and turbogenerators representing the dependence of steam production (for boilers) and power (for turbogenerators) on the cost of one cubic meter of steam. The models allow us to take into account the heterogeneity of the fuel used, the season of the thermal power plant, the operating characteristics of the equipment (mode maps of boilers and mode diagrams of turbine generators), which imposes restrictions on the conditions and excludes the possibility of obtaining emergency and/or deliberately unrealized conditions in the calculations. At present, the work performed the definition of the season (winter/summer), in which it is more economical to turn off the equipment for preventive maintenance.
The created algorithm is implemented in the original software product "KATRAN", which allows the calculation of normal, emergency modes and optimization of steady-state conditions. The implementation of the results of work in the conditions of the existing facility will make it possible to increase the efficiency of the installed units and reduce energy costs without additional capital investments in the equipment.
Keywords
Heat power plant, electrical power supply system, turbogenerating set, boiler, optimum condition, repair condition, scheduled preventive repair.
1. Foshko L.S., Zusmanovich L.B., Flos S.L., Pal'chik V.A., Konevskij B.I. Optimal Load Distribution Between Generators of Thermal Power Station Using ECM. Elektricheskie stancii [Power Technology and Engineering], 1977, no. 1, pp. 58-60. (In Russian)
2. Shhapin N.M., Justus V.P. Optimal Heat Load Distribution Between Plant Boilers and Power System TPP. Promyshlennaya teploenergetika [Industrial Power Engineering], 1977, no. 54, pp. 43-44. (In Russian)
3. Aminov R.Z., Doronin M.S., Lubkov V.I., Golina R.M. On Line Load Distribution Between Boilers of TPP Taking Into Account Theirs State of Repair. Elektricheskie stancii [Power Technology and Engineering], 1982, no. 9, pp. 34-35. (In Russian)
4. Letun V.M., Gluz I.S. Optimal Control of Power Station Conditions under Wholesale Electricity Market. Elektricheskie stancii [Power Technology and Engineering], 2003, no 3, pp. 8-12. (In Russian)
5. Igumenshhev V.A., Malafeev A.V. Optimizaciya ekspluatacionnyh rezhimov sistem elektrosnabzheniya promyshlennyh predpriyatij s sobstvennymi elektrostanciyami [Optimization of Industrial Power Station Operation Conditions]. Magnitogorsk, Nosov Magnitogorsk St. Technical Univ. Publ., 2011. 126 p. (In Russian)
6. Zaslavec B.I., Igumenshchev V.A., Nikolaev N.A., Malafeev A.V., Bulanova O.V., Rotanova Yu.N. Analysis of Transient Processes in Power Supply Systems Of Industrial Enterprises with their Own Power Plants in the Modes of Separate Operation after a Short Circuit. Izvestiya vysshih uchebnyh zavedenij. Elektromekhanika [Proceedings of universities.Russian Electromechanics], 2009, no. 1, pp. 60-65. (In Russian)
7. Kondrashova Y.N., Gazizova O.V., Malapheev A.V. Increasing the Efficiency of Power Resource Management As a Solution of Issues of the Power Supply System Stability. Procedia Engineering, 2015, no. 129, pp. 759-763.
8. Bulanova O.V. Calculation of Indicators of Static Stability of Power Supply Systems of Large Industrial Enterprises with their Own Power Plants. Vestnik Magnitogorskogo gosudarstvennogo tekhnicheskogo universiteta im. G.I. Nosova [Vestnik of Nosov Magnitogorsk State Technical University], 2006, no. 2 (14), pp. 37-40. (In Russian)
9. Samoylenko V.O., Korkunova O.L., Pazderin A.V., Novikov N.N. Overcurrent Protection Adjustment when Connecting Synchronous Generation to Power Supply Systems. Proceedings of the IEEE International Conference on Industrial Technology Сер. "2015 IEEE International Conference on Industrial Technology, ICIT 2015", 2015, pp. 2368-2373.
10. Karandaev A.S., Kornilov G.P., Karandaeva O.I., Rotanova Yu.N., Rovnejko V.V., Gallyamov R.R. Analysis of the Reliability of Thermal Power Plant Equipment in the Implementation of Frequency Converters. Vestnik Yuzhno-Uralskogo gosudarstvennogo universiteta [Bulletin of South Ural State University]. Series: Energy. 2009, vol. 34, no. 167, pp. 16-22. (In Russian)
11. Eroshenko S.A., Karpenko A.A., Kokin S.E., Pazderin A.V. Scientific Problems of Distributed Generation. Izvestiya vysshih uchebnyh zavedenij. Problemy energetiki [Proceedings of the higher educational institutions. ENERGY SECTOR PROBLEMS], 2010, no. 11-12, pp. 126-133. (In Russian)
12. Eroshenko S.A., Khalyasmaa A.I., Dmitriev S.A., Pazderin A.V., Karpenko A.A. Distributed Generation Siting And Sizing With Implementation Feasibility Analysis. Proceedings of 2013 International Conference on Power, Energy and Control, ICPEC 2013, 2013, pp. 717-721.
13. Hachatrjan V.S., Mnacakanjan M.A., Hachatrjan K.V., Grigorjan S.Je. Optimizing the Operating Conditions of a Large Electric Power System in Terms of the Active Powers at Power Station Nodes that Employs the Decomposition Approach is Proposed. Elektrichestvo [Electrical Technology], 2008, no. 2, pp. 10-22. (In Russian)
14. Safonov, G.P. The Optimization of the Production Process for Electrical Insulation Systems / G.P. Safonov, A.M. Sorokin, A.V. Buldakov, P.V. Vorobyev. Russian Electrical Engineering, 2007, no. 3, pp. 167-169.
15. Hilber P. Maintenance Optimization for Power Distribution Systems. Sweden: Royal Institute of Technology Stockholm, 2008. 125 p.
16. Frangopoulos C.A., von Spakovsky M.R., Sciubba E. A Brief Review of Methods for the Design and Synthesis Optimization of Energy Systems. Applied Thermodynamics, 2002, no. 4, pp. 151-160.
17. Varganova A.V. Methods of Optimization of Operating Modes of Electric Power Systems and Networks. Vestnik Yuzhno-Uralskogo gosudarstvennogo universiteta [Bulletin of South Ural State University]. Series: Energy, 2017, vol. 17, no. 3, pp. 76–85. (In Russian)
18. Pazderin A., Yuferev S. Power Flow Calculation by Combination of Newton-Raphson Method and Newton's Method in Optimization. IECON Proceedings (Industrial Electronics Conference) 35th Annual Conference of the IEEE Industrial Electronics Society, IECON 2009. Ser. "Proceedings - IECON 2009, 35th Annual Conference of the IEEE Industrial Electronics Society" sponsors: The Institute of Electrical and Electronics Engineers (IEEE), IEEE Industrial Electronics Society (IES), Society of Instrument and Control Engineers (SICE-Japan), University of Porto, Universidade Nova de Lisboa. Porto, 2009, pp. 1693-1696.
19. Pazderin A.V., Yuferev S.V. Steady-State Calculation of Electrical Power System by The Newton's Method in Optimization. 2009 IEEE Bucharest PowerTech: Innovative Ideas Toward the Electrical Grid of the Future Bucharest, 2009, pp. 5281830.
20. Gurskij S.K., Domnikov S.V. Active Power Distribution Using Guaranty Comparable Level Method. Elektrichestvo [Electrical Technology], 1982, no. 9, pp. 10-16. (In Russian)
21. Varganova A.V. The Algorithm of the Intra-Station Unit Optimization of Operating Modes of Boiler Units and Turbo Generators for Industrial Power Plants. Promyshlennaya teploenergetika [Industrial Power Engineering], 2018, no. 1, pp. 17-22. (In Russian)
22. Varganov D.E., Varganova A.V. Cost Calculation of Working Steam in Terms of Industrial Thermal Power Stations. Elektrotekhnicheskie sistemy i kompleksy [Electrotechnical systems and complexes], 2016, no. 1 (30), pp. 24-28. (In Russian)
23. Varganov D.E., Varganova A.V., Barankova I.I. Application of Econometric Models of Gas Piston Plants in Order to Increase the Efficiency of Power Unit with Distributed Generation Sources. Elektrotekhnicheskie sistemy i kompleksy [Electrotechnical systems and complexes], 2016, no. 4 (33), pp. 29-34. (In Russian)
24. Kochkina A.V., Malafeev A.V., Kurilova N.A., Netupsky R.P. Construction of the Technical and Economic Models of Auxiliary Turbine Generators and Boilers of a Power Plant. Elektrotekhnicheskie sistemy i kompleksy [Electrotechnical systems and complexes], 2013, no. 21, pp. 247-252. (In Russian)
25. Malafeev A.V., Igumenshchev V.A., Khlamova A.V. Obtaining Economic and Mathematical Models of Turbogenerators of Industrial Power Plants in Order to Optimize the Mode of the Power Supply System. Elektrotekhnicheskie kompleksy i sistemy upravleniya [Electrotechnical complexes and control systems]. 2009, no. 4, pp. 34-38. (In Russian)