Sampling data preprocessing subsystem for integrated protection

This paper designs a novel sampling data preprocessing subsystem in integrated protection based on IEC61850. This subsystem will be used to solve the problems of data redundancy processing and bad value processing. A framework structure of integrated protection software system based on the concept of module distributed is firstly presented, and then the details of preprocessing subsystem are given. This subsystem is the most important foundation of integrated protection. It can provide a platform to analyze and validate the protection arithmetic. Meanwhile, the subsystem will reach the requirement for security, real-time and reliability.

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