The Control Experience of the AC-DC Interconnected Power System in China and Its Reference Significance to Brazilian Power System

In recent years, large-scale blackouts have occurred in several countries due to the lack of power system analysis and catastrophic failure defensive, which caused a worldwide concern. In comparison, Chinese power grid has a richer set of predicted faults and a more complete fault defense strategy. This article focuses on the Brazilian power grid. Firstly, the similarities and differences between the Brazilian power grid and the Chinese power grid in terms of grid structure, power supply composition, stability characteristics, and control strategy are studied. Then, combined with the requirement of the Brazilian power grid, some excellent experiences of the Chinese power grid are summarized. Point out the weakness part in Brazilian power system security and stability guidelines, which will give reference to Brazilian power grid. At last, some preliminary suggestions on the safety and stability analysis and control of the Brazilian power grid are put forward in the paper.