MILES AXLE Translation. Region: Russian Federation –
Source: Peter the Great St Petersburg Polytechnic University – Peter the Great St Petersburg Polytechnic University –
A new approach to increasing the economic and energy efficiency of combined-cycle power units of Russian thermal power plants is being developed by a research group from the Institute of Power Engineering of SPbPU with the support of the strategic academic leadership program “Priority-2030”. Scientists have proven that changing the operating mode of combined-cycle units will increase the marginal income of thermal power plants without significantly changing the heating scheme. According to experts’ calculations, the approach will save several million cubic meters of natural gas per heating period.
Scientists from the Institute of Power Engineering of Peter the Great St. Petersburg Polytechnic University are developing new tools to improve economic and energy efficiency when converting combined-cycle power units to parameters traditional for the Russian energy sector using domestic gas turbine units. According to scientists, all combined-cycle units at Russian thermal power plants currently use low steam parameters in the utilization circuit. This is largely due to the imposed traditions of Western manufacturers of such devices. Analysis and revision of existing equipment operating parameters is the most important stage of systematic work to ensure import independence of the domestic energy sector.
With the support of the Priority-2030 strategic academic leadership program, a research group from SPbPU is working on optimization tools for the transition to domestic combined-cycle technologies. At the first stage of the work, scientists created digital models of units with combined-cycle plants for a comprehensive analysis of all factors affecting the operation of the CHPP. Then, specialists conducted a study of the influence of various parameters, including the pressure of steam generated in the waste heat boiler, on the economic efficiency of the CHPP.
Most Western power units operate in condensation mode, i.e. they produce only electrical energy. For Russia, it is typical to use power units with combined production of both heat and electrical energy. Combined-cycle power units with imported gas turbine units operated in our country have a fairly low pressure of 7.4 MPa at the input. But the strong point of the Russian energy industry is a wide range of steam turbines with initial pressures of 12.74 MPa, which are used in classic steam turbine power units, – noted Irina Anikina, Candidate of Technical Sciences, Associate Professor of the Higher School of Nuclear and Thermal Energy of SPbPU.
Scientists have carried out complex calculations and proposed to increase the initial steam pressure in the utilization circuit of the combined-cycle power plant. Instead of using turbines with reduced operating parameters, scientists proposed to use existing Russian serial-produced steam turbines with minimal modernization, designed for a pressure of 12.74 MPa, during the planned modernization or construction of new combined-cycle power plants. This will significantly increase the availability of combined-cycle power units for the domestic energy sector, as well as the efficiency of the plant. According to scientists’ calculations, this approach will save 2-3 million cubic meters of natural gas in just one heating period.
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Please note; This information is raw content directly from the information source. It is accurate to what the source is stating and does not reflect the position of MIL-OSI or its clients.