1. High Penetration of Power Electronic Interfaced Power Sources and the Potential Contribution of Grid Forming Converters
2. Minimum Specifications Required for Provision of GB Grid Grid Forming (GBGF) Capability (formerly Virtual Synchronous Machine/VSM Capability)
3. FNN Guideline: Grid forming behaviour of HVDC systems and DC-connected PPMs,2020
4. Virtual synchronous machines — Classification of implementations and analysis of equivalence to droop controllers for microgrids
5. Virtual synchronous generators: A survey and new perspectives