Power Grid Crises Management and Empirical Research on Small Disturbance Character of Power Grid

Power grid crises, which have frequently taken place at home and abroad, alert the importance of power grid crises management. With the development of interconnection of big power grid, a small-disturbance stability of a power system should not be ignored. This article introduce the basic concept of power grid crises management and the basic principle of small-disturbance theory to analyze the damping character of Jiangsu power grid, adopts Prony theory to prove the above calculated result, then researches the effect of PSS device to raise the damping property of power system. This study has theoretical and practical significance to guarantee the security and stability of power grid.