The ways of electrical equipment fault probability influenced by typhoons and rainstorms are analyzed in detail. The scope of data acquisition of blackout defense system is expanded to macroscale meteorological forecast information as well as local meteorological data. A spatial-temporal early-warning method against these natural disasters is proposed. Firstly

according to the information of meteorology

environment

topography and geomorphology

the spatial-temporal evolution trends of typhoons and rainstorms can be predicted and modified. Then

the probability of faults such as broken lines

collapsed towers

flashover caused by adverse weather or derivative disasters such as landslide

debris flow and flood is forecasted on line. Through the module interface between natural disaster evaluation and power system stability analysis

the predictive fault set of online security analysis which was fixed can now be dynamically modified. Therefore

the blackout defense system against typhoon and rainstorm has definite ability of early warning and decision support. This work is supported by Special Fund of the National Basic Research Program of China (973 Program) (No. 2013CB228204)

State Key Program of National Natural Science Foundation of China (No. 61533010)

China-Thailand Cooperation Fund Project (No. 5151101161)

and Science and Technology Project of Yunnan Power Grid Company (No. YDTZ-F2014-105).