Research on active power control analysis method of transmission interfaces for online TTC calculation

Total Transfer Capability(TTC) play an important role on anlysis and control of power system stability. This paper proposes an method about active power control strategy analysis of transmission interfaces, which identifies the most sensitive generator for transmission interfaces and decides control strategy of transmission interfaces active power automatically. It can improve accuracy of online TTC which dependent on off-line simulation knowledge, also could not automatically adapt the real-time operation mode of power system. In this paper, a varible of integrative sensitivity of transmission interfaces is defined for reflecting the control effect of different generator for total power of transmission interface. Based on this varible, the method can calculate the adjustment margin and priority of generator in power network, and search adjustable electric equipments for controlling transmission interfaces power, and provide control strategy for transmission interfaces active power. Finally the simulation analysis of actual exapmle verifies the effectiveness of the method.