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With the implementation of China 's west to east , north and south for each project , the growing size of the grid , increasing the power of the grid , chain trip events even the blackout accidents are not uncommon , it is to people's production and living with to a huge impact. A lot of analysis , the trend transfer of protection malfunction due to power failure triggered a chain line failure or even large areas plays a key role . The initial stage of the accident , the trend in the transmission section internal transfer smaller amount of transfer is the best time to control accident ; accident in the late , total transfer and expand the scope of , and may be accompanied by system instability , difficult to control larger . Therefore study the law of the trend of the transfer of effective control system status , play a decisive role to prevent the deterioration of the accident . In this paper, the trend transfer line is disconnected due to conduct in-depth research . A number of map and thinking quickly identify the dynamic topology grid trend transfer by analyzing the trend of the general rules of transfer . Based on real-time network topology structure is to establish the appropriate matrix , and the matrix calculation , the scope has been overloaded branch prediction , a more serious impact on the area further using trend analysis method estimates for dynamic network , Analyzing network line state of operation. Proved The method is equally applicable to the communication network , the trend transfer theoretical system , as well as real-time security analysis of the grid would lay a solid foundation . On this basis , the problem of slip overload . Focusing the entire power network , network topology departure , combined with knowledge of graph theory , respectively, put forward a comprehensive sensitivity analysis methods and optimization methods cutting machine , load shedding control strategies , to determine the amount of control node and control , and quickly reduce over- contained the trend line . Grid security , stable operation , to prevent chain trip event , even blackout events have laid a solid foundation . A large number of simulation results show the effectiveness of the method .
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