GSA can be used for analysis of underground systems at low frequency and is commonly used for small and medium size plants like substations.
GSA includes the tools SRA and SA for soil resistivity analysis, soil resistivity seasonal analysis and multilayer soil modelling.
GSA is highly appreciated for its ease of use, user interface and quality of graphic output.
GSA is based on a PEEC static numerical model and to the equipotential condition of the electrodes and can analyse the low frequency performance of grounding systems composed by many distinct electrodes of any shape but with a limited size into a uniform or multilayer soil model.
GSA can take input data in the form of either graphical (from “dxf” files or from the integrated CAD) or numerical and render powerful graphical facilities via it’s optimised and validated computation algorithms, thus making it an indispensable tool for grounding system design and verification.
GSA includes the modules SRA to calculate multilayer soil model parameters starting from measured soil resistivity data and SA to calculate the effects of seasonal climate change.
GSA is essentially a low frequency tool but in several practical cases (with little electrodes), it can be also useful to calculate the impulse impedance of electrodes under lighting currents with an accuracy level adequate for many engineering applications.
gs: Grounding and Earthing Analysis, Grounding Systems, Earth Resistance, Touch and step voltages, Soil modeling, Lightning protection, Soil ionization, impulse impedance