| 摘要 |
The present invention relates to a speed adjustment method based on a combined circulation gas turbine system model. The speed adjustment method is characterized by comprising the following steps: 1) establishing a combined circulation gas turbine system model that comprises an adjustment system model unit, a fuel valve electro-hydraulic servo system model unit and a combined circulation gas turbine prime mover model unit all connected in sequence; 2) using feedforward and feedback indifference PID control in the adjustment system model unit: adding a one-time frequency modulation power change requirement value generated by a power grid frequency deviation with an AGC initial load to obtain an actual load instruction of the combined circulation gas turbine, and carrying out the feedforward and feedback indifference PID control on the instruction to generate a fuel valve instruction; 3) controlling a fuel valve to generate a fuel amount signal according to the fuel valve instruction in the fuel valve electro-hydraulic servo system model unit; and 4) controlling the combined circulation gas turbine in the combined circulation gas turbine prime mover model unit according to the fuel amount signal, and adjusting the output power of the combined circulation gas turbine. Compared with the prior art, the present invention has the advantages of high control precision and high response speed. |
