Skip to main content
SpringerLink
Log in

Topping with a Natural Gas-Fired Combined Cycle Unit of a Coal-Fired Cogeneration Power Plant with Cross Connections

  • STEAM-TURBINE, GAS-TURBINE, COMBINED-CYCLE POWER PLANTS AND THEIR AUXILIARY EQUIPMENT
  • Published:
Thermal Engineering Aims and scope Submit manuscript

Abstract

Thermal power plants (TPP) with cross connections and having a minimum reference fuel rate of 321 g/(kW h) prevail in the structure of the generating capacities in Russia. In practice, this characteristic is often above 500 g/(kW h). Application of parallel-type, dual-fuel combined-cycle units (CCUs) using coal as the main fuel, for improving the efficiency of power plants with cross connections is considered. Such CCUs have high efficiency and are suitable for modernization of operating subcritical power plants with cross connections. The power of CCUs with gas turbines manufactured in Russia or having a high degree of production localization in Russia can be as high as 200–250 MW. In all the cases, a new heat-recovery steam generator (HRSG) and a new steam turbine for a live-steam pressure of 12.8 and 8.8 MPa must be developed. The paper considers the process features of such dual-fuel cogeneration CCUs based on a 6FA gas turbine. A CCU thermal scheme is developed. Bled steam conditions under different operating conditions are determined considering the bypass of the main condensate and feedwater lines. GCU performance indices as a function of ambient air temperature are determined. In addition, an option was considered for modernizing the existing cogeneration power plant (TETs) in the town of Seversk by implementation of a dual-fuel CCU based on an 82 MW 6FA gas turbine and a T-96/122-8.8 steam turbine while maintaining the coal-fired power steam boilers in operation. It is demonstrated that the proposed modernization option makes it possible to reduce the fuel cost by approximately 240 million rubles per year while increasing the electricity delivery under cogeneration conditions by 1.7 times.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1.
Fig. 2.
Fig. 3.
Fig. 4.

Similar content being viewed by others

REFERENCES

  1. Main Characteristics of the Russian Electric Energy Sector. https://minenergo.gov.ru/node/532.

  2. P. A. Shchinnikov, O. V. Borush, and S. V. Zykov, Exergy Studies and Optimization of Operation Regimes of Combined Heat and Power Plants (Novosib. Gos. Tekh. Univ., Novosibirsk, 2019) [in Russian].

    Google Scholar 

  3. Yu. M. Khlebalin, “Ways to improve the efficiency and competitiveness of steam turbine combined heat and power plants,” Vestn. SGTU, No. 3 (4), 115–120 (2004).

    Google Scholar 

  4. Report on the Functioning of the Electric Energy Sector for 2016 (Ross. Energ. Agentstvo Minenergo Ross., Moscow, 2017) [in Russian].

  5. S. V. Tsanev, V. D. Burov, A. S. Zemtsov, and A. S. Osyka, Gas Turbine Power Units (Mosk. Energ. Inst., Moscow, 2011) [in Russian].

    Google Scholar 

  6. V. D. Burov, B. V. Konakotin, and S. V. Tsanev, “Features of the use of steam-gas technology at coal-fired power plants,” Energosberezhenie Vodopodgot., No. 1, 37–43 (1998).

  7. P. A. Shchinnikov, G. V. Nozdrenko, I. V. Borodikhin, and O. V. Borush, “Steam-gas units with predominant use of solid fuel,” Probl. Energ., No. 3–4, 13–22 (2007).

  8. Advanced Technology for Distributed Generation. 6F.03 (6FA) Gas Turbine Unit. https://www.rusgt.ru/ products/6fa-gas-turbine/

Download references

Author information

Authors and Affiliations

  1. Novosibirsk State Technical University, 630073, Novosibirsk, Russia

    O. V. Borush, P. A. Shchinnikov & A. A. Frantseva

Authors
  1. O. V. Borush
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. P. A. Shchinnikov
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. A. A. Frantseva
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to A. A. Frantseva.

Additional information

Translated by T. Krasnoshchekova

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Borush, O.V., Shchinnikov, P.A. & Frantseva, A.A. Topping with a Natural Gas-Fired Combined Cycle Unit of a Coal-Fired Cogeneration Power Plant with Cross Connections. Therm. Eng. 68, 65–71 (2021). https://doi.org/10.1134/S0040601521010110

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1134/S0040601521010110

Keywords:

Search

Navigation