Abstract
In this study, the author takes the reconstruction of an 110kv digitized power substation as the case research object. To achieve these requirements of intelligentizing device in substations and networking device as well as communication, this reconstruction creates data modeling and gateways design in IEDs of space layers. Communication in space layers utilizes GOOSE network communication mechanism specified by IEC61850 standards instead of busbar signals in traditional protection, which resolves more hard-wire connections existing in each outlet together with subsection protections and simple busbar protections in traditional patterns and complex problems of secondary circuit.
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