SCL Language (Substation Configuration Language) is a language to describe object modeling, incorporating concepts such as inheritance and abstract references (polymorphism). This language is based on XML and UML languages.
There are four types of extensions for SCL files, developed to differentiate data types transmitted among network devices. The next figure demonstrates how each one of these files work in a system.
Relationship between SCL files
The next table contains the description of each one of these extensions and how they can be applied.
File extensions in SCL language
Extension |
Description |
|---|---|
ICD (IED Capability Description) |
Files containing features and functionality of IEDs. Responsible for exchanging data from an IED configuration tool with a system configuration tool. Contains models of data types needed and types of definitions for Logical Nodes |
CID (Configured IED Description) |
File generated after configuring ICDs. Describes an IED configured in a project. Contains the current address of an IED and all information needed. Exchanges data from IED's configuration tool with the IED |
SSD (Specific Description of System) |
Corresponds to the specifications of a Substation, that is, contains schematic and logic diagrams of a Substation. Performs a data exchange between a system specification tool and a system configuration tool |
SCD (Substation Configuration Description) |
Combination of ICD files correctly configured, or only the CID files together with the SSD file from the network. Fully describes the configuration of a process. Performs a data exchange between a system configuration tool and an IED configuration tool |