Abstract
The grid integration of renewable energy sources interfaced through power electronic converters is undergoing a significant acceleration to meet environmental and political targets. The rapid deployment of converters brings new challenges in ensuring robustness, transient stability, among others. In order to enhance transient stability, transmission system operators established network grid code requirements for converter-based generators to support the primary control task during faults. A critical factor in terms of implementing grid codes is the control strategy of the grid-side converters. Grid-forming converters are a promising solution which could perform properly in a weak-grid condition as well as in an islanded operation. In order to ensure grid code compliance, a wide range of transient stability studies is required. Time-domain simulations are common practice for that purpose. However, performing traditional monolithic time domain simulations (single solver, single domain) on a converter-dominated power system is a very complex and computationally intensive task. In this paper, a co-simulation approach using the mosaik framework is applied on a power system with grid-forming converters. A validation workflow is proposed to verify the co-simulation framework. The results of comprehensive simulation studies show a proof of concept for the applicability of this co-simulation approach to evaluate the transient stability of a dominant grid-forming converter-based power system.
Highlights
Time-domain simulation is an important instrument for ensuring transient stability of a converter-dominated power system in the planning and development phase of wind parks and other renewable energy generation plants
This paper explored the efficacy of a MOSAIK-based co-simulation framework for transient stability evaluation of a gridforming converter-based renewable energy sources (RESs)
It has been investigated and it appears that the spike is due to the inevitable delay in transferring the information between the functional mock-up units (FMUs) and the high sensitivity of the voltage-source converter modelled in PowerFactory to this delay
Summary
Publisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations. This framework is used to test the functionality of the controls, to validate their efficacy in a co-simulation setting against a monolithic powerfactory simulation, and to eventually apply this for transient stability analysis.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have