Laboratory-Based Smart Power System, Part II: Control, Monitoring and Protection

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Wide Area Monitoring (WAM), Wide Area Protection (WAP), and Wide Area Control (WAC) systems will enhance the future of Smart Grid operation in terms of reliability and security. In part I of this paper, a proposed architecture for a hybrid AC/DC Smart Grid hardware test-bed system was presented. Design details of the various components and their connectivity in the overall system architecture were identified. In part II of the paper, the focus is on the design of monitoring, control and protection systems and their integrated real-time operation. Various control scenarios for system startup and continuous operation are examined. We have developed a control system based on wide area measurements. The advanced measurement system based on synchrophasors was also implemented using DAQs real-time synchronous data. The developed system features a wide variety of capabilities such as online system parameters calculation and online voltage stability monitoring. These are implemented as an experimental case to enhance wide area monitoring systems. Moreover, the protection system was designed inside of the real-time software environment to monitor the real-time wide area data, and make a comprehensive and reliable coordination for the whole system. Ideas related to the interaction of a DC microgrid involving sustainable energy sources with the main AC grid have been also implemented and presented. The implemented system is explicit and achievable in any research laboratory and for real-time real-world Smart Grid applications.

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