Method for operating a gas turbine below the nominal power thereof

US10408135B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Thorsten Engler · Moers, DE
• Markus Gorynski · Bochum, DE
• Manuel Gutermuth · Essen, DE
• Philipp Kreutzer · Haltern am See, DE
• Marco Link · Oberhausen, DE
• Nicolas Savilius · Essen, DE
• Kai Suselbeck · Dinslaken, DE
• Marc Tertilt · Hattingen, DE

Key dates

• Filing date: Feb 12, 2014
• Grant date: Sep 10, 2019
• Expiry date: May 17, 2035

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F23N2900/05001
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A method for operating a gas turbine below the nominal power includes: determining a lower power threshold value of the gas turbine which causes the gas turbine to leave a CO-emission-compliant partial load range of the gas turbine; providing a specified threshold value for output gas turbine power, wherein the specified threshold value is less than the nominal power of the gas turbine; and operating the gas turbine at an output gas turbine power above the specified threshold value at a constant exhaust gas temperature, wherein the inlet guide blades of a compressor of the gas turbine are closed further in order to reduce the output gas turbine power. A sufficiently large valve is selected for the specified threshold value so that increases of the primary zone temperature, combustion temperature, and exhaust temperature extend over a CO-emission-compliant partial load range of the gas turbine that is as large as possible.