Grid-forming converters face stability challenges over long transmission distances

⚡ AI Executive Summary

Researchers evaluated how grid-forming control technologies perform across different electrical distances in hybrid systems mixing synchronous generators and converter-based resources, using standard test networks and transmission simulations. Grid-forming converters delivered faster reactive-power response and improved voltage support after disturbances, but synchronous generators demonstrated significantly superior fault ride-through performance, particularly over extended transmission paths. The findings reveal a critical trade-off in modern grid integration: while converter-based systems offer faster control responses beneficial for data center loads and renewable integration, their effectiveness diminishes with electrical distance—a constraint that grows more relevant as renewable generation sites move farther from demand centers. This research suggests that relying on grid-forming technology alone to replace synchronous generation in long-distance transmission corridors risks stability degradation, and that hybrid control strategies or enhanced algorithms will be essential for reliable operation as grids transition away from traditional generation.