Review and Brief Analysis on Power System Accidents and Suggestions on Power System Dispatching and Management

Power system development in various stages in China are reviewed and it is emphasized that power security measures should be advanced in step with its expansion. By means of analyzing typical blackouts and power network failures occurred in North America, West Europe and China, the features of power system failures during the period of construction and development of large-scale power grid are summarized. The author points out that the parallel operation of power networks in different voltage grades is not suitable while the large area power networks are interconnected; reactive power should be balanced in local power network; power system dispatching and management should be in accordance with the requirement of power system secure operation; and it is suggested to develop power network automatic security system to mitigate the damage caused by massive power blackouts.