Analysis and Optimization of AGC and Primary Frequency Control Strategy for 330 MW Heating Unit
At present, a tough problem for power plants that have extraction steam heating units is to keep balance between strictly meet the heating demands of chemical industrial park, the AGC and primary frequency automatically adjusting requisition from the power grid dispatching department. The 2 × 330 MW units＇ con- struction debugging of Shanghai Wujing Thermal Power Plant was inclined to ensure the steadily heating sup- ply. The load change capability of the units could not perfectly satisfy the AGC and primary frequency requisi- tion of the grid dispatching when running on the heating condition. Start from unit control and logic modifica- tion, after experiments and adjustments, the control strategy of AGC and primary frequency analyses and opti- mization on the heating condition is accomplished. By modifying related parameters, load change capability of these units is increased to satisfy the requests of grid AGC and primary frequency.
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