The invention relates to the technical field of electrical
system evaluation, in particular to a
toughness evaluation method of a novel power
system in
extreme weather, which comprises the steps of constructing a digital twin model, collecting data in real time, performing fusion
processing on multi-
source data, identifying potential risks of the power
system in
extreme weather, determining system
vulnerability and constructing an
extreme weather scene. The method comprises the following steps: simulating weather events possibly occurring in the future, predicting the
occurrence probability and influence range of extreme weather, analyzing system
vulnerability, identifying key nodes and vulnerable equipment, defining and calculating a
toughness index, optimizing an operation strategy, executing an
emergency plan when the extreme weather occurs, evaluating a plan execution effect, and continuously optimizing the plan through feedback; according to the method, the dynamic response capability and the
toughness evaluation accuracy of the power system in extreme weather are remarkably improved, the actual operation state of the power system is reflected in real time, the
model parameters can be dynamically adjusted through the digital twin technology, and the real response of the system under the changing condition is simulated.