Risk mitigation of power electronics connections
National Grid Electricity Transmission
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Network Innovation Allowance
ET - Network improvements and system operability
Power electronics devices rely on complex dynamic control and high-frequency switching to perform their basic functions and meeting power quality and dynamic response requirements. However, the rapid dynamic control and fast switching of power electronics are introducing new system integration problems. A growing issue in the industrial community is the influence of these complex dynamic control systems and grid parameters (AC/DC) on the resonance and oscillatory behaviour of the entire system due to control interactions.
The two main goals of this research project are to:
- Establish a methodology to predict control interactions using impedance modelling and measurement.
- Develop impedance-based design guidelines for power electronic converter control systems to manage the risks of control interactions.
The objective of this work is to develop a methodology for:
(1) Identifying the risks associated with the stability and control interaction before a new power electronic device (e.g. Windfarm, interconnector, STATCOM) is introduced to the network using impedance based stability analysis.
(2) Develop impedance-based design guidelines for power electronics converter control systems to manage the risks of control interactions.