Characterisation of Grid Short-Circuit Faults with Energy Storage Plant

With a large number of new energy power stations connected to the grid, the power quality of the grid will be affected, in this regard, through the grid-connected energy storage power station to suppress the intermittent new energy generation characteristics such as wind power, and large-scale energy storage power station access to the grid will also have an impact on the grid short-circuit current, this paper through the study of different ways of grid-connected storage power station to obtain the short-circuit current of the output of the storage station in different ways to get with the grid type and structural grid type short-circuit current differences in the output of the storage power station. This paper investigates the different ways of grid-connected energy storage plants, obtains the output short-circuit current of energy storage plants under different control methods, gets the difference between the output short-circuit current of grid-following-type and grid-forming-type energy storage plants, and then obtains the short-circuit fault characteristics of the grid containing energy storage plants, and builds a simulation model and a short-circuit current calculation program under MATLAB/Simulink with a certain localized power grid of Shanxi Province, to verify the theoretical accuracy.