A gas turbine system includes a compressor, a fuel source, a combustor, and a turbine. The compressor is configured to compress air. The fuel source is configured to supply fuel to a plurality of fuel manifolds. The combustor is configured to receive the air from the compressor, to receive the fuel
A gas turbine system includes a compressor, a fuel source, a combustor, and a turbine. The compressor is configured to compress air. The fuel source is configured to supply fuel to a plurality of fuel manifolds. The combustor is configured to receive the air from the compressor, to receive the fuel from the plurality of fuel manifolds, and to combust the air and the fuel into combustion products. The turbine is configured to extract work from the combustion products. A fuel control valve is disposed within each of the plurality of fuel manifolds and is configured to throttle the fuel to the combustor when the gas turbine system is operating in an electrical island mode.
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1. A gas turbine system, comprising: a compressor configured to compress air;a fuel source configured to supply fuel to a plurality of fuel manifolds;a combustor configured to receive the air from the compressor, to receive the fuel from the plurality of fuel manifolds, and to combust the air and th
1. A gas turbine system, comprising: a compressor configured to compress air;a fuel source configured to supply fuel to a plurality of fuel manifolds;a combustor configured to receive the air from the compressor, to receive the fuel from the plurality of fuel manifolds, and to combust the air and the fuel into combustion products;a turbine configured to extract work from the combustion products;a plurality of fuel control valves, each corresponding to a respective one of the plurality of fuel manifolds and configured to throttle the fuel to the combustor when the gas turbine system is operating in an electrical island mode; anda controller comprising a processor and an article of manufacture that includes one or more tangible, machine-readable media at least collectively comprising instructions executable by the processor, the instructions comprising instructions to: receive a signal to initiate load rejection by the gas turbine system;detect an ambient condition of the gas turbine system and a power demand of a local load supplied at least partially by the gas turbine system;select a fuel schedule of a plurality of fuel schedules based on the signal;select a fuel distribution operating mode of a plurality of stored fuel distribution operating modes of the selected fuel schedule based on the ambient condition and the power demand, wherein each of the plurality of fuel distribution operating modes comprises a unique fuel distribution for the plurality of fuel manifolds; andthrottle the fuel to the plurality of fuel control valves according to the selected fuel distribution operating mode. 2. The gas turbine system of claim 1, wherein the turbine is configured to produce a rated power during normal operation and the gas turbine system is configured to reject a portion of the rated power by throttling a first fuel control valve of the plurality of fuel control valves for a first time period during the electrical island mode. 3. The gas turbine system of claim 2, wherein the portion of the rated power rejected by the gas turbine system is greater than 10% of the rated load. 4. The gas turbine system of claim 2, wherein the first time period is between approximately 10 seconds and 100 seconds. 5. The gas turbine system of claim 2, wherein the gas turbine system is configured to throttle the first fuel control valve for a second time period after the first time period when a fuel flow through the first fuel control valve is approximately zero for a portion of the first time period. 6. The gas turbine system of claim 1, comprising: a plurality of breakers configured to selectively isolate the gas turbine system from a power grid, a local load, or both, wherein the gas turbine system is configured to be coupled to the power grid through the plurality of breakers during normal operation and the gas turbine system is configured to be isolated from the power grid during the electrical island mode. 7. The gas turbine system of claim 1, wherein the ambient condition comprises an ambient temperature, an ambient pressure, or a combination thereof. 8. A system comprising: a gas turbine engine having a combustor configured to combust a mixture of fuel and air; anda controller configured to select an operating fuel schedule from a plurality of fuel schedules and to adjust the fuel and air mixture to the combustor based on the operating fuel schedule, wherein the plurality of fuel schedules comprises a first fuel schedule and a second fuel schedule, wherein the controller is configured to select the first fuel schedule during a normal operation in which the gas turbine engine is producing a rated load and to select the second fuel schedule during an electrical island operation in which the gas turbine engine is rejecting a portion of the rated load, wherein the second fuel schedule comprises a plurality of fuel distribution operating modes, and wherein the controller is configured to select a fuel distribution operating mode from the plurality of fuel distribution operating modes based at least in part on an ambient temperature and a power demand of a local load. 9. The system of claim 8, wherein the controller is configured to throttle a fuel flow to the gas turbine engine according to the selected fuel distribution operating mode of the second fuel schedule. 10. The system of claim 8, wherein the second fuel schedule is based at least in part on a power demand of a local load and an ambient condition. 11. The system of claim 10, wherein the ambient condition comprises an ambient temperature, an ambient pressure, or a combination thereof. 12. An article of manufacture comprising: one or more tangible, machine-readable media at least collectively comprising instructions executable by a processor, the instructions comprising instructions to: receive a signal to initiate load rejection by a gas turbine engine;detect an ambient condition of the gas turbine engine and a power demand of a local load supplied at least partially by the gas turbine engine;select a fuel schedule of a plurality of fuel schedules based on the signal;select a fuel distribution operating mode of a plurality of stored fuel distribution operating modes of the selected fuel schedule based on the ambient condition and the power demand, wherein each of the plurality of fuel distribution operating modes comprises a unique fuel distribution for a plurality of fuel manifolds of the gas turbine engine; andthrottle a fuel flow to the plurality of fuel manifolds according to the selected fuel distribution operating mode of the selected fuel schedule. 13. The article of manufacture of claim 12, wherein the ambient condition comprises an ambient temperature, an ambient pressure, or a combination thereof at the gas turbine engine. 14. The article of manufacture of claim 12, wherein the instructions to throttle the fuel flow comprise instructions to adjust a fuel control valve to throttle the fuel flow for a first time period. 15. The article of manufacture of claim 14, wherein the instructions to throttle the fuel flow comprise instructions to adjust the fuel control valve to throttle the fuel flow for a second time period when the fuel flow is approximately zero for a portion of the first time period. 16. The article of manufacture of claim 15, wherein the first time period is longer than the second time period. 17. The article of manufacture of claim 12, wherein the instructions to throttle the fuel flow comprise instructions to adjust a plurality of fuel control valves to selectively distribute the fuel flow through the plurality of fuel manifolds based on the operating mode. 18. The article of manufacture of claim 12, wherein the instructions to throttle the fuel flow are configured to cause the gas turbine engine reject a portion of a rated load of the gas turbine engine. 19. The article of manufacture of claim 18, wherein the portion of the rated power rejected by the gas turbine engine is greater than 10% of the rated load. 20. The article of manufacture of claim 12, wherein the article of manufacture comprises a memory device of a controller that comprises the processor, wherein the controller is coupled to the gas turbine and configured to control the gas turbine according to the instructions of the article of manufacture.
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