Analysis of Synchronous Generator Inertia Response and Primary Frequency Regulation

The synchronous generator of the traditional power system is directly connected to the grid. Due to the voltage source characteristics of the synchronous generator, it has the ability to share the disturbance power instantaneously. When the system power changes, it will be directly reflected in the sudden change of electromagnetic power. The rotating mass of the generator releases or absorbs kinetic energy. Respond to the deviation of electromagnetic power and mechanical power caused by system power changes, and support system power balance. Based on the theoretical basis of synchronous motor inertia response and primary frequency regulation, this paper analyzes the inertia response as well as primary frequency regulation under different damping coefficients through power and energy change curves. The power and energy mechanism and characteristics of the power system provide a new method for power system frequency stability analysis.