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About the session
Session 10 - Keynote - Future grid: difficulties and opportunities related to High Voltage Direct Current (HVDC)
Dr Alan Watson
The shift from conventional power plants with synchronous generators to renewable energy sources like wind and solar farms is causing grid instability and a lack of inertia. This is due to converters dominating grids, making AC voltage and frequency more sensitive to variations in reactive and active powers. This increases the complexity of the power system infrastructure, creating more dynamic interactions between power electronics and AC grid components. Therefore, there is a need to develop synchronous grid-forming converters, for example within HVDC systems, with additional functionalities which enable new converters to provide a fault response that is more similar to that provided by synchronous machines. This must be done in a way that keeps the transient currents within the limits of the IGBT capability. However, the actual impact of this synchronous grid-forming control will be dependent on the source of energy and the expected steady-state behaviour of the equipment.
Dr Omar Jasim, Consultant Engineer, GE Vernova, UK
