Risk Identification of Power System Cascading Failure Based on Operation Status and Natural Disaster Warning Information

The power system has extremely uncertain characteristics, but the existing cascading fault deterministic method and random evaluation method cannot distinguish the possibility of each accident. This paper proposes the identification of power system cascading failure risk based on grid operation status and natural disaster warning information. This method analyzes the impact of cascading failures on the system, and uses "fuzziness" to describe the uncertainty of chain faults. Based on the principle of harmonization and randomness and credibility theory, the cascading failures are characterized as fuzzy events. The experimental results prove the correctness of the method.