An Integrated Simulation/Laboratory System to Investigate Grid/Inverter Stability Issues

This paper reports an advanced experimental laboratory test-set that can physically replicate the plant response of large-scale synchronous generators, allowing the dynamic response of power systems with high levels of inverter penetration to be investigated at a laboratory level. The paper also presents a fast execution matching simulation model of the experimental testbed that can be used for control strategy analysis and refinement, before proceeding to experimental investigations. The experimental testbed and the matching simulation model can be easily configured to represent any real-world generation plant. Results from the experimental testbed and the matching simulation have been verified against plant responses obtained using the DIgSILENT Power Factory (PF) analysis package.