The DTS system consists of three main modules: control center simulation, power system simulation, and instructor simulation. The control center simulation highly replicates the dispatching operation environment, the power system simulation accurately simulates grid steady state, dynamic state, and fault conditions, and the instructor simulation module supports flexible training process setup, allowing customization of complex scenarios and assessment plans. The system closely mirrors the actual operating environment, offering dispatchers an immersive practical training experience. It is extensively utilized for dispatcher skill enhancement, accident simulation, and competition assessment, serving as a crucial tool to enhance dispatchers' operational capabilities.