Check out the new package PowerNetworkMatrices where we implemented a series of methods to calculate the classically used network matrices in PowerSystems PTDF, LODF, Ybus and other.
The methods are implemented with scalability and parallelism in mind, including a VirtualPTDF that will calculate each row of the matrix on the fly to avoid excessive memory usage for large scale applications.
These functionalities were part of PowerSystems.jl and have been moved out for further improvement and expansion of the capabilities.