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In view of the importance of infrastructure systems for social well-being and sustenance, analyzing vulnerability of infrastructure systems has become a focal area for the process of optimizing infrastructure design and protection. On this basis, this paper took power and water systems of a major city in China as example and devoted to develop a framework for the analysis of interdependent infrastructure systems vulnerability. It is helpful to provide decision support on cascading failures control and system improvement. [ABSTRACT FROM AUTHOR]

To solve the problem of unstable operation caused by capacity limitation of microgrid storage system, this paper presents an improved microgrid cooperative control strategy, of which the structure is double-layer of cooperative control, that is the primary control is the battery energy storage system and the secondary control is a microgrid management system (MMS). The primary control ensures that the frequency of the microgrid is within the acceptable range, while the secondary control ensures the largest spare capacity in the microgrid. To accurately describe the different types of distributed power of the prime mover to affect the microgrid system, by using detailed micro-source model, a microgrid simulation system is established and simulated. The simulation results show that the cooperative control strategy has a good dynamic performance, and ensures the quality of power supply requirements. Therefore the cooperative control strategy of microgrid has a better application prospects. [ABSTRACT FROM AUTHOR]