Abstract
At present, the major problem faced by heat supply thermal power units is not only to ensure the external heating demand, but also to meet the requirements of the power grid for the primary frequency modulation of units. The main types of heat supply units in Shandong power grid are introduced. And take a 600MW pure condensing heat supply unit as an example, the reasons that affect the test results of large disturbance of primary frequency regulation in the period of heat supply are analysed. The scheme of optimization and transformation is put forward, which has good effect and meets the requirement of primary frequency regulation of power grid.
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