Abstract:With the increase of the power scale systems, the contradiction of uneven distribution between load and energy is increasingly prominent, along with insufficient transmission capacity of existing transmission lines. Monitoring and preditcting dynamic line load capacity can solve the above problems and provide an important reference for line load scheduling and maintenance program. Using meteorological data. A prediction system for dynamic line load capacity base on Climate Model is achieved. The article elaborates details about the system principle, hardware design and function, the system is verified by the result of field test. Predicting steady-state and transient dynamic line load capacity can fully unearth the potential capacity of the transmission line.