The first operation results of the gas turbine unit M701F4 as a part of CCP-410 of the Krasnodar TPP after major overhaul

Abstract

Abstract The article contains the reconstruction results of the M701F4 gas turbine unit of the Krasnodar TPP, where it has been in operation since 2011. In May 2019, it was overhauled with the replacement of the gas turbine working blades. In the first two rows, the blades of a new design were used. This allowed reducing the air flow for cooling and forcing the combustion chamber. For research we obtained archival indicators of a standard automation system. They were selected for the periods of operation, which lasted from June 2018 until the moment of major repairs (May 2019) and from June 2019 to January 2020. Data processing was carried out in accordance with State Standard R 55798-2013 (ISO 2314: 2009). The study showed that the reconstruction led to an increase in maximum capacity in the entire range of outdoor temperatures. Under normal conditions and standard air temperature at the compressor inlet equal to +15 °C, there is an increase by 14.4 MW or by 4.6%. The temperature of the combustion products also increased, the increase was about 15 °C in the range of outdoor temperatures from +5.6 to + 20.0 °C. The change in the consumption of combustion products is insignificant. We also estimated an increase in the efficiency of electricity generation. It is at the level of 0.5%.