Inertia-Distribution Estimation Method Based on Characteristics of Electromechanical Disturbance Propagation

doi:10.12204/j.issn.1000-7229.2020.08.004

Abstract

Abstract: With the increase of renewable energy generations integration, the dynamic behaviors of power system are affected. The inertia characteristic of power system is a critical factor reflecting the ability of resisting frequency disturbances. Based on the characteristics of electromechanical disturbance propagation, a mathematical model is established in this paper. To evaluate the frequency anti-disturbance ability of different buses in the grid, the inertia distribution identification method is proposed according to the relationship between propagation speed and inertia. Based on the inertia distribution results, the change of inertia characteristics of power system caused by the integration of renewable energy generation is further evaluated. Then, the IEEE 39 test system simulation validates the effectiveness of the approach and reveals the impact of new energy integration.

Key words: inertia, frequency disturbance, electromechanical disturbance, inertia distribution, renewable energy

CLC Number:

TM 744

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