Node comprehensive vulnerability based on operational state and network structure

The research of the power system vulnerability which is the development and extension of the security and stability is of great significance. Based on the real-time running state of nodes, we use the energy function model to establish the assessment index of state vulnerability. Considering the network parameters of nodes, we use the Electrical interface model to establish the assessment indicators of the structural vulnerability. Considering the state and the characteristics of the structure, we put forward an assessment index of the comprehensive vulnerability to locate the weak nodes in the system accurately. Through analysing the simulation of the IEEE-30 bus system, the feasibility and practicability of the proposed indicators are verified.