Gas turbine load control system

A gas turbine system comprising:

• a turbine combustor configured to combust a compressed oxidant and a fuel in the presence of an exhaust gas diluent generated from an exhaust gas to produce combustion products;
• an oxidant supply path fluidly coupled to the turbine combustor and configured to flow the compressed oxidant from a main oxidant compression system to the turbine combustor at an oxidant flow rate;
• a turbine configured to extract work from the combustion products to produce the exhaust gas, wherein the turbine causes a shaft of the gas turbine system to rotate when the work is extracted from the combustion products:
• a purge stream that receives extracted combustion products directly from the combustor and directs the extracted combustion products from the combustor to an exhaust gas supply system, wherein an extracted combustion products flow meter is disposed along the purge stream;
• a product gas recycle path fluidly coupled between the combustor and the exhaust gas supply system, wherein the purge stream is configured to direct the extracted combustion products from the purge stream to the turbine combustor;
• an electrical generator configured to generate electrical power in response to rotation by the shaft;
• and
• a controller, comprising:
• a processor configured to:
• receive data indicative of a target load for the gas turbine system electrical generator, wherein the data indicative of the target load for the gas turbine system electrical generator comprises feedback from a power meter coupled to the gas turbine system electrical generator;
• receive feedback from the extracted combustion products flow meter, wherein the feedback is indicative of a flow rate of the extracted combustion products from the combustor;
• and
• perform an oxidant load control in response to the target load and the feedback indicative of the flow rate of the extracted combustion products from the combustor by adjusting the oxidant flow rate along the oxidant supply path as a primary load control parameter, wherein adjusting the oxidant flow rate adjusts combustion parameters within the turbine combustor to change a rotational speed of the shaft.