Proposal of a System to Identify Failures and Evaluate the Efficiency of Internal Combustion Engines of Thermal Power Plants

Lilia Carneiro Ramos, Frederico de Oliveira Assuncao, Helcio Francisco Villa-Nova, Germano Lambert-Torres, Erik Leandro Bonaldi, Levy Ely de Lacerda de Oliveira, Wilson Cesar Sant’Ana (), Ronny Francis Ribeiro Junior, Carlos Eduardo Teixeira and Paulo Germano Pinto de Medeiros
Additional contact information
Lilia Carneiro Ramos: Gnarus Institute, Itajuba 37500-052, MG, Brazil
Frederico de Oliveira Assuncao: Gnarus Institute, Itajuba 37500-052, MG, Brazil
Helcio Francisco Villa-Nova: Pro-Reitoria de Pesquisa e Pos-Graduacao (PRPPG), Federal University of Itajuba, Itajuba 37500-903, MG, Brazil
Germano Lambert-Torres: Gnarus Institute, Itajuba 37500-052, MG, Brazil
Erik Leandro Bonaldi: Gnarus Institute, Itajuba 37500-052, MG, Brazil
Levy Ely de Lacerda de Oliveira: Gnarus Institute, Itajuba 37500-052, MG, Brazil
Wilson Cesar Sant’Ana: Pro-Reitoria de Pesquisa e Pos-Graduacao (PRPPG), Federal University of Itajuba, Itajuba 37500-903, MG, Brazil
Ronny Francis Ribeiro Junior: Gnarus Institute, Itajuba 37500-052, MG, Brazil
Carlos Eduardo Teixeira: Gnarus Institute, Itajuba 37500-052, MG, Brazil
Paulo Germano Pinto de Medeiros: Usina Termelétrica Pernambuco III S.A., Igarassu 53670-000, PE, Brazil

Energies, 2022, vol. 15, issue 23, 1-19

Abstract: Thermoelectric plants are one of the main forms of energy generation in the world, being the second main source of generation in Brazil. However, with rising fuel costs and greater concern for the environment, controlling the efficiency levels of these plants has become critical. This work presents a system to identify failures and evaluate the efficiency of internal combustion engines used in thermal power plants. To assess efficiency, the developed system monitors subsystem losses (such as cooling, lubrication, turbocharger, etc.). In addition, sensors for cylinder pressure and instantaneous speed were installed and comprise an online monitoring system for the pressure condition of each cylinder of the engines. All this is combined into a supervisory system that presents the Sankey diagram of the engine as its main information online and remotely. To validate the system, experiments were carried out in a controlled configuration (where faults were purposely inserted) and in a Brazilian thermal power plant. The results show that by using in-cylinder pressure and the WOIS database, it was possible to detect the presence of a fault as well as pinpoint its location.

Keywords: thermal efficiency; internal combustion engine; monitoring (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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