Location of grid forming converters when dealing with multi-class stability problems

• Type: Article in International Scientific Journal
• Date: 2025

Authors

Fernandes, F (Author) Other; Lopes, JP (Author) Other; C. L. Moreira (Author) FEUP

Journal

Title: IET Generation Transmission & Distribution

Vol. 19

ISSN: 1751-8687

Indexing

ISI Web of Knowledge - 0 Citations

Scopus - 0 Citations

Other information

Authenticus ID: P-017-XT1

DOI: 10.1049/gtd2.13312

Abstract (EN): This work proposes an innovative methodology for the optimal placement of grid-forming converters (GFM) in converter-dominated grids while accounting for multiple stability classes. A heuristic-based methodology is proposed to solve an optimisation problem whose objective function encompasses up to 4 stability indices obtained through the simulation of a shortlist of disturbances. The proposed methodology was employed in a modified version of the 39-bus test system, using DigSILENT Power Factory as the simulation engine. First, the GFM placement problem is solved individually for the different stability classes to highlight the underlying physical phenomena that explain the optimality of the solutions and evidence the need for a multi-class approach. Second, a multi-class approach that combines the different stability indices through linear scalarisation (weights), using the normalised distance of each index to its limit as a way to define its importance, is adopted. For all the proposed fitness function formulations, the method successfully converged to a balanced solution among the various stability classes, thereby enhancing overall system stability.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 13