With the large-scale grid connection of distributed generation (DG)

its output exhibits high uncertainty due to the influence of factors such as natural conditions

posing new challenges to the safe operation of transmission lines and system dispatching. This paper focuses on the issues of transmission line risk assessment and optimal dispatching considering the uncertainty of DG

analyzes the uncertain impacts of DG grid connection on transmission lines and the risks arising therefrom

and discusses the methods and indicator systems for transmission line risk assessment. On this basis

it proposes an optimal dispatching strategy for transmission lines targeting the uncertainty of DG

aiming to reduce the operational risks of transmission lines and enhance the safety

stability

and economy of the power grid.