VSG++ Black Start Multi-Machine Collaboration PCS for Grid-Forming

Shenzhen Hewang Electric Co., Ltd. presents VSG++ technology, a breakthrough in grid-forming control for energy storage systems. This technology enables black start multi-machine collaboration, allowing power systems to recover from total blackouts without external power sources. The grid-forming PCS simulates synchronous machine behavior, providing voltage and frequency support, inertia response, and weak grid adaptability. It addresses challenges in new energy systems such as reduced inertia, voltage instability, and broadband oscillations. Key features include independent voltage building, low wear reactive support, and phase angle jump performance. Hewang's solution employs a three-layer distributed architecture for site-level multi-machine coordination, supporting 100MW-level stations with self-synchronization and no master-slave design. Applications span urban grids, remote areas, islands, and emergency power supplies, with successful case studies like the Sichuan Jiayang Coal Mine project demonstrating black start and load switching capabilities.