A Study on the Scheme of Dynamic Equivalent of China Southern Power Grid for Transient Stab ility Analysis

An equivalent scheme of China Southern Power Grid is proposed, corresponding to the development of the main grid. Considering the requirements of transient stability analysis, it discusses the key factors affecting the equivalent scheme deeply. Taking the scale of the grid into account, as well as the interaction between AC and DC system, the asynchronous interconnection of Yunnan Power Grid and the main network, and the increasing proportion of renewable energy and FACTS, researches on the equivalent scheme of the main grid are made in detail. The simulation results of China Southern Power Grid verifies the correctness of the proposed scheme and the reasonability of the key factors discussed in this paper.