Automatic control optimization method of air feeder of thermal power unit
A technology for thermal power units and optimization methods, which is applied in the direction of combustion methods, combustion control, and fuel supply adjustment, and can solve problems such as targeted research, blower overcurrent, blower stall, etc., to achieve simple on-site commissioning process and reduce labor Strength, easy engineering effect
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[0031] A thermal power unit blower automatic control optimization method, characterized in that the steps are:
[0032] 1) Detect the total coal supply, the error value D of the guide vane opening of each blower, and the error value I of the inverter frequency of each blower;
[0033] 2) Set the current limit value C, the limit value of the blower outlet pressure drop rate F, the decrease value of the guide vane opening after the blower stalls, the decrease value of the inverter after the blower stalls J;
[0034] 3) Optimize the feed-forward control logic of the boiler total air volume PID regulator of the DCS system:
[0035] After the input total coal supply is passed through the first-order inertia link, it is then input to the boiler total air volume PID regulator feedforward broken line function f in the DCS system 1 In (x), the improved boiler total air volume PID regulator feed-forward control logic is obtained;
[0036] 4) Optimize the upper limit value A of the boi...
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