Method for optimizing a large-scale industrial facility, especially a power plant

• US 7,165,404 B2
• Filed: 09/12/2002
• Issued: 01/23/2007
• Est. Priority Date: 09/12/2001
• Status: Expired due to Fees

• Current Assignee: General Electric Technology GmbH (GE Aerospace)
• Original Assignee: Alstom Technology Ltd. (Alstom SA)
• Inventors: Kitzmann, Ewald, Gietz, Manfred, Schule, Volker, Bird, Alan
• Primary Examiner(s): NGUYEN, HOANG M
• Application Number:
  US10/488,663
• Publication Number:
  US 20040244378A1
• Time in Patent Office: 1,594 Days
• Field of Search: 606/43, 606/45, 606/60, 606/70, 606/67
• US Class Current: 60/660
• CPC Class Codes: F01K 13/02 Controlling, e.g. stopping or starting
• CPC Class Codes: G05B 13/024 in which a parameter or coefficient is automatically adjusted to optimise the performance

Abstract

The invention relates to a method for optimizing a large-scale industrial facility, especially a power plant, consisting of m subassemblies (BGj), wherein j=1(1)m) and wherein the following steps are successively carried out: comparing the parameters (KGj) of all subassemblies (BG1 to BGj) with predetermined reference values (RWj); detecting the subassemblies (Bgi) with i=1(1)m, whose parameters (KG1) are worse than the reference values (RWi) and optimizing the subassemblies (BG1) whose parameters (KGi) are worse than the reference values (RW1).

Claims

1. A method for optimizing a steam power station having at least one boiler assembly, at least one steam turbine assembly, at least one condenser assembly, at least one generator assembly and at least one flue gas cleaning device, the method comprising the steps of:

comparing the characteristic variables of the at least one boiler assembly, of the at least one steam turbine assembly, of the at least one condenser assembly, of the at least one generator assembly and of the at least one flue gas cleaning device with predetermined reference values;

determining those assemblies of the at least one boiler assembly, of the at least one steam turbine assembly, of the at least one condenser assembly, of the at least one generator assembly and of the at least one flue gas cleaning device whose characteristic variables are poorer than their predetermined reference values; and

optimizing only those assemblies of the at least one boiler assembly, of the at least one steam turbine assembly, of the at least one condenser assembly, of the at least one generator assembly and of the at least one flue gas cleaning device whose characteristic variables are poorer than their predetermined reference values.

2. The method as claimed in claim 1 wherein the optimizing step comprises the further steps of:

subdividing into subassemblies the at least one boiler assembly, the at least one steam turbine assembly, the at least one condenser assembly, the at least one generator assembly and the at least one flue gas cleaning device wherein the at least one boiler assembly includes at least some of the following subassemblies;

a fuel supply subassembly, an air supply with a fan subassembly, an air preheater subassembly, a high-pressure boiler subassembly, a superheater subassembly and an ash extractor subassembly, and wherein the at least one steam turbine assembly includes at least some of the following subassemblies;

a high-pressure part subassembly, an intermediate superheater subassembly and a low-pressure-part subassembly, and wherein the at least one condenser assembly includes at least some of the following subassemblies;

a cooling water pump subassembly, a cooling tower subassembly and an additional water pump subassembly, and wherein the at least one generator assembly includes at least one of the following subassemblies;

a 3-phase AC generator subassembly and a DC excitation machine subassembly, and wherein the at least one flue gas cleaning device assembly includes at least one of the following subassemblies;

a flue gas dust extractor subassembly and a flue gas fan subassembly;

comparing the characteristic variables of all of the following subassemblies;

the fuel supply subassembly, the air supply with fan subassembly, the air preheater subassembly, the high-pressure boiler subassembly, the superheater subassembly and the ash extractor subassembly of the at least one boiler assembly;

the high-pressure part subassembly, the intermediate superheater subassembly and the low-pressure part subassembly of the at least one steam turbine assembly;

the cooling water pump subassembly, the cooling tower subassembly and the additional water pump subassembly of the at least one condenser subassembly;

the 3-phase AC generator subassembly and the DC excitation machine subassembly of the at least one generator assembly; and

the flue gas dust extractor subassembly and the flue gas fan subassembly of the at least one flue gas cleaning device assembly with predetermined reference values;

determining those subassemblies from all of the following;

the fuel supply subassembly, the air supply with fan subassembly, the air preheater subassembly, the high-pressure boiler subassembly, the superheater subassembly and the ash extractor subassembly of the at least one boiler assembly;

the high-pressure part subassembly, the intermediate superheater subassembly and the low-pressure part subassembly of the at least one steam turbine subassembly;

the cooling water pump subassembly, the cooling tower subassembly and the additional water pump subassembly of the at least one condenser subassembly;

the 3-phase AC generator subassembly and the DC excitation subassembly of the at least one generator assembly; and

the flue gas dust extractor subassembly and the flue gas fan subassembly of the at least one flue gas cleaning device assembly whose characteristic variables are poorer than their predetermined reference values;

optimizing only those subassemblies of all of the following;

the fuel supply subassembly, the air supply with fan subassembly, the air preheater subassembly, the high-pressure boiler subassembly, the superheater subassembly and the ash extractor subassembly of the at least one boiler assembly;

the high-pressure part subassembly, the intermediate superheater subassembly and the low-pressure part subassembly of the at least one steam turbine assembly;

the cooling water pump subassembly, the cooling tower subassembly and the additional water pump subassembly of the at least one condenser subassembly;

the 3-phase AC generator subassembly and the DC excitation subassembly of the at least one generator subassembly; and

the flue gas dust extractor subassembly and the flue gas fan subassembly of the at least one flue gas cleaning device assembly whose characteristic variables are poorer than their predetermined reference values.

3. The method as claimed in claim 2 wherein the predetermined reference values are of a technical nature.

4. The method as claimed in claim 3 wherein the predetermined reference values comprise efficiencies, emissions, powers, reliability, maintenance requirements and remaining lives.

5. The method as claimed in claim 2 wherein the predetermined reference values are of a financial nature.

6. The method as claimed in claim 1 wherein the at least one boiler assembly, the at least one steam turbine assembly, the at least one condenser assembly, the at least one generator assembly and the at least one flue gas cleaning device whose characteristic variables are poorer than their predetermined reference values are optimized in order of their technical improvement potentials as determined using a difference between the predetermined reference values and the characteristic variables.

7. The method as claimed in claim 1 wherein the at least one boiler assembly, the at least one steam turbine assembly, the at least one condenser assembly, the at least one generator assembly and the at least one flue gas cleaning device assembly whose characteristic variables are poorer than their predetermined reference values are optimized in order of their associated cost savings.

8. The method as claimed in claim 1 wherein the at least one boiler assembly, the at least one steam turbine assembly, the at least one condenser assembly, the at least one generator assembly and the at least one flue gas cleaning device assembly whose characteristic variables are poorer that their predetermined reference values are optimized in order of their associated capital outlay.

9. A storage medium encoded with machine readable computer program code for optimizing a steam power station having at least one boiler assembly, at least one steam turbine assembly, at least one condenser assembly, at least one generator assembly and at least one flue gas cleaning device assembly, the storage medium including instructions for causing a computer to implement a method comprising the steps of:

comparing the characteristic variables of the at least one boiler assembly, of the at least one steam turbine assembly, of the at least one condenser assembly, of the at least one generator assembly and of he at least one flue gas cleaning device assembly with predetermined reference values;

determining those assemblies of the at least one boiler assembly, of the at least one steam turbine assembly, of the at least one condenser assembly, of the at least one generator assembly and of the at least one flue gas cleaning device assembly whose characteristic variables are poorer than their predetermined reference values; and

optimizing only those assemblies of the at least one boiler assembly, of the at least one steam turbine assembly, of the at least one condenser assembly, of the at least one generator assembly and of the at least one flue gas cleaning device assembly whose characteristic variables are poorer than their predetermined reference values.

10. The storage medium as claimed in claim 9 wherein the optimizing step comprises the further steps of:

subdividing into subassemblies the at least one boiler assembly, the at least one steam turbine assembly, the at least one condenser assembly, the at least one generator assembly and the at least one flue gas cleaning device wherein the at least one boiler assembly includes at least some of the following subassemblies;

a fuel supply subassembly, an air supply with fan subassembly, an air preheater subassembly, a high-pressure boiler subassembly, a superheater subassembly and an ash extractor subassembly, and wherein the at least one steam turbine assembly includes at least some of the following subassemblies;

a high-pressure part subassembly, an intermediate superheater subassembly and a low-pressure part subassembly, and wherein the at least one condenser assembly includes at some of the following subassemblies;

a cooling water pump subassembly, a cooling tower subassembly and an additional water pump subassembly, and wherein the at least one generator assembly includes at least one of the following subassemblies;

a 3-phase AC generator subassembly and a DC excitation machine subassembly, and wherein the at least one flue gas cleaning device assembly includes at least one of the following subassemblies;

a flue gas dust extractor subassembly and a flue gas fan subassembly;

comparing the characteristic values of all of the following subassemblies;

the fuel supply subassembly, the air supply with fan subassembly, the air preheater subassembly, the high-pressure boiler subassembly, the superheater subassembly and the ash extractor subassembly of the at least one boiler assembly;

the high-pressure part subassembly, the intermediate superheater subassembly and the low-pressure part subassembly of the at least one steam turbine assembly;

the cooling water pump subassembly, the cooling tower subassembly and the additional water pump subassembly of the at least one condenser assembly;

the 3-phase AC generator subassembly and the DC excitation machine of the at least one generator assembly; and

the flue gas dust extractor subassembly and the flue gas fan subassembly of the at least one flue gas cleaning device assembly with predetermined reference values;

determining those subassemblies from all of the following;

the fuel supply subassembly, the air supply with fan subassembly, the air preheater subassembly, the high-pressure boiler subassembly, the superheater subassembly and the ash extractor subassembly of the at least one boiler assembly;

the high-pressure part subassembly, the intermediate superheater subassembly and the low-pressure part subassembly of the at least one steam turbine assembly;

the cooling water pump subassembly, the cooling tower subassembly and the additional water pump subassembly of the at least one condenser assembly;

the 3-phase AC generator subassembly and the DC excitation subassembly of the at least one generator assembly; and

the flue gas dust extractor subassembly and the flue gas fan subassembly of the at least one flue gas cleaning device assembly whose characteristic variables are poorer than their predetermined reference values; and

optimizing only those subassemblies of all of the following;

the fuel supply subassembly, the air supply with fan subassembly, the air preheater subassembly, the high-pressure boiler subassembly, the superheater subassembly and the ash extractor subassembly of the at least one boiler assembly;

the high-pressure part subassembly, the intermediate superheater subassembly and the low-pressure part subassembly of the at least one steam turbine assembly;

the cooling water pump subassembly, the cooling tower subassembly and the additional water pump subassembly of the at least one condenser subassembly;

the 3-phase AC generator subassembly and the DC excitation subassembly of the at least one generator assembly; and

the flue gas dust extractor subassembly and the flue gas fan subassembly of the at least one flue gas cleaning device assembly whose characteristic variables are poorer than their predetermined reference values.