Digital Substation

Digital Substation is an engineering publication focused on IEC 61850 automation, protection systems, and digital grid intelligence.

open-source (Technology)

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OCL in IEC 61850: Machine-Readable Rules for SCL Validation

XML Schema validation checks structure — it cannot verify that a GOOSE subscription references a valid dataset or that a logical node contains required data objects. Object Constraint Language (OCL) fills that gap. IEC TS 61850-6-3, published in 2025, defines how OCL rules should be written and applied to IEC 61850 XML files, laying the groundwork for consistent, formal SCL validation across tools.

Free PTPv2 implementation

Open-source world is rich with interesting projects. Today we present a project which offers a possibility of PTP implementation for further studies. Project is called PTPd (PTP daemon) and it offers implementation of the Precision Time protocol (PTP) as defined by the relevant IEEE 1588 standard. PTP Version 2 implements IEEE-1588-2008.

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