SAFETY INSTRUMENTED SYSTEM (SIS) FOR A TURBINE SYSTEM

• US 20120130553A1
• Filed: 11/19/2010
• Published: 05/24/2012
• Est. Priority Date: 11/19/2010
• Status: Active Grant

• Current Assignee: GE Infrastructure Technology, LLC (General Electric Company)
• Original Assignee: General Electric Company
• Inventors: Kleen, Randall John, Purani, Hardik Ashok, Shakeel, Tabrez, Tymus, Shahriar
• Granted Patent: US 8,744,634 B2
• Time in Patent Office: Days
• US Class Current: 700/287
• CPC Class Codes: F02C 7/26 Starting; Ignition
• CPC Class Codes: F02C 9/28 Regulating systems responsive to plant or ambient parameters, e.g. temperature, pressure, rotor speed F02C9/30 - F02C9/38, F02C9/44 take precedence
• CPC Class Codes: F05D 2260/80 Diagnostics
• CPC Class Codes: F05D 2260/85 Starting
• CPC Class Codes: F05D 2270/094 by using back-up controls
• CPC Class Codes: F05D 2270/304 Spool rotational speed

Abstract

A retrofit kit for a turbine system is provided that includes a safety instrumented system (SIS) controller having a first plurality of functions and the SIS controller is configured to be coupled to a turbine-generator controller, wherein the SIS controller permits a startup function of the turbine-generator controller based on a plurality of inputs from a turbine.

Claims

1. A system, comprising:

a turbine coupled to a generator;

a turbine-generator controller comprising a first plurality of functions and coupled to the turbine; and

a second controller comprising a second plurality of functions and coupled to the turbine and the turbine-generator controller, wherein the second plurality of functions comprises at least one function different than the first plurality of functions, wherein the second controller is functionally independent from the turbine-generator controller.

2. The system of claim 1, wherein the second controller comprises a safety instrumented system (SIS) controller.

3. The system of claim 1, wherein the second plurality of functions comprises monitoring a startup function of the turbine-generator controller.

4. The system of claim 3, wherein the second controller permits the startup function based on a plurality of conditions.

5. The system of claim 4, wherein the second controller sends an emergency shutdown signal to the turbine-generator controller based on the plurality of conditions.

6. The system of claim 5, wherein the plurality of conditions comprises completion of a self-test of the second controller.

7. The system of claim 5, wherein the plurality of conditions comprises monitoring of a valve coupled to the turbine, a rotor speed of a compressor of the turbine, exhaust temperature of the turbine, and status of an emergency shutdown of the turbine.

8. The system of claim 1, wherein the turbine comprises a gas turbine.

9. The system of claim 1, wherein the second controller comprises a testing facility that provides testing of each of the second plurality of functions.

10. A system, comprising:

a controller;

a processor;

a memory coupled to the processor, and

a first plurality of function, wherein the first plurality of functions comprise monitoring initialization and startup of a turbine by a turbine-generator controller, wherein the controller is configured to couple to the turbine-generator controller and the turbine-generator controller comprises a second plurality of functions.

11. The system of claim 10, wherein the first plurality of functions comprise monitoring a fuel system monitoring function of the turbine-generator controller, an exhaust purge and light-off function of the turbine-generator controller, and a shutdown function of the turbine-generator controller.

12. The system of claim 10, wherein the controller and the turbine-generator controller receive a plurality of inputs from the turbine.

13. The system of claim 10, wherein the plurality of inputs comprise a rotor speed of the compressor of the turbine, a flame detector of the turbine, and an exhaust temperature of the turbine.

14. The system of claim 10, comprising a plurality of outputs coupled to a plurality of control components coupled to the turbine, wherein the control components comprise a plurality of valves.

15. A retrofit kit for a turbine-generator system, comprising:

a safety instrumented system (SIS) controller having a first plurality of functions, wherein the SIS controller is configured to be coupled to a turbine-generator controller and the SIS controller permits a startup function of the turbine-generator controller based on a plurality of inputs from turbine.

16. The retrofit kit of claim 15, wherein the startup function of the turbine-generator controller starts operation of the turbine coupled to the SIS controller and the turbine-generator controller.

17. The retrofit kit of claim 16, wherein the plurality of inputs comprise a fuel operation, a rotor speed of a compressor of the turbine, an exhaust temperature of the turbine, a flame detection of the turbine, and a status of an emergency shutdown of the turbine.

18. The retrofit kit of claim 15, wherein the SIS controller comprises a network connection coupled to the turbine-generator controller.

19. The retrofit kit of claim 15, wherein the turbine-generator controller comprises a second plurality of functions and the first plurality of functions comprise functions independent of the second plurality of functions.

20. The retrofit kit of claim 15, wherein the first plurality of functions conform to International Electrotechnical Commission (IEC) 61508, IEC 61522, and Standards Australia (AS) 3814.