PRODUCTS
Our toolchains transform deep domain expertise in grid and integration studies into structured, scalable, and intuitive workflows. They span all critical stages of the analysis lifecycle and are designed for seamless integration of advanced AI capabilities, including agent-based approaches.
inZpector
by Mosaic Grid Solutions
The grid integration of new installations requires powerful and scalable analysis tools to identify critical interactions with the existing AC network. Mosaic Grid Solutions provides a modular, fully automated toolchain for conducting screening studies based on an impedance-based stability assessment – ranging from small-signal excitation, through the numerical determination of frequency-dependent plant impedances, to the evaluation and subsequent visualization of the results.
The Mosaic inZpector enables efficient stability screening as part of the grid integration of new power electronic assets. This enables the identification of critical scenarios at early project stages and allows potential control-related adjustment requirements to be more precisely targeted.
Thanks to its end-to-end toolchain - comprising several seamlessly integrated modules that can be flexibly combined as needed - handling is significantly simplified while maintaining a consistently high level of quality, and overall effort is markedly reduced.
The method enables impedance-based stability assessments while taking into account the manufacturer-specific plant model and the frequency-dependent grid impedances at the point of common coupling (PCC). Our toolchain enables the numerical determination of frequency-dependent plant impedances and is compatible with commonly used software environments such as PSCAD™ or MATLAB/Simulink™. The calculation methodology is based on the standard IEC 61400-21-1, allowing both conventional excitation frequencies and corresponding mirror frequencies to be considered in the evaluation. Once the plant impedances have been determined, an automated SISO or MIMO Nyquist stability assessment can be performed to identify stability margins and potentially critical control interactions between power electronic assets and the grid. If required, the results are subsequently validated by additional time-domain simulations.
The frequency-dependent plant impedances typically need to be determined for different configurations, operating points, and control modes. This requires highly efficient simulation performance and an effective calculation methodology, particularly for complex manufacturer-specific models. The Mosaic inZpector is characterized by a high level of optimization, leveraging parallelized EMT simulations as well as adaptive adjustment of the simulation duration depending on the respective excitation frequency.
We offer grid integration studies for large-scale power electronic assets such as HVDC systems, FACTS devices, battery energy storage systems, and others. The input data for these studies consist of black-box, manufacturer-specific EMT models of the installations as well as the grid impedances at the point of common coupling (PCC). Using the Mosaic inZpector, frequency-dependent plant impedances are determined and an impedance-based stability assessment is performed. Deliverables may include not only comprehensive study reports and the derived plant impedances, but also accompanying workshops with all relevant stakeholders to highlight critical stability margins at an early stage.
The Mosaic inZpector has been successfully applied in numerous commercial projects in close collaboration with leading international industry partners. This includes supporting several European transmission system operators in grid planning activities, conducting FACTS grid integration studies, as well as the characterization and validation of advanced grid-forming control concepts for power electronic installations.