Grid analysis (also network analysis, power network analysis or mains analysis) as an umbrella term refers to a specialised process that aims to examine the structure, performance and reliability of power supply grids. These analyses are carried out to ensure the optimal distribution of energy, identify bottlenecks, improve the efficiency of energy transmission and ensure the stability of the grid under different load conditions. Grid analyses in this context typically include the evaluation of network/grid topologies, the simulation of load flow, the analysis of short-circuit currents, the investigation of voltage stability and the evaluation of grid response to renewable energy sources. In the context of energy supply and grid operation, grid analyses are also more specifically understood to mean the measurement and analysis of energy networks (public or commercial/industrial) using suitable measurement technology to determine voltage quality/power quality in order to ensure the security of supply of electrical transmission and distribution grids.