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About IEC 61850 Standard |
The IEC 61850 is an international standard for communication in electrical substation automation systems, widely used in smart grids. This standard defines a robust, flexible, and interoperable communication model for protection, control, monitoring, and measurement devices in power systems.
•Standardized Data Model: Uses data objects, or Logical Nodes, to represent functions and devices, such as circuit breakers and transformers, ensuring consistency and interoperability
•Ethernet-Based Communication: Supports protocols MMS (Manufacturing Message Specification), XMPP (Extensible Messaging and Presence Protocol), GOOSE (Generic Object-Oriented Substation Event), and SV (Sampled Values) for real-time data exchange
•SCL Configuration: Uses the SCL (Substation Configuration Language) language to describe device and system configurations, simplifying engineering and maintenance
•High Reliability and Scalability: Designed to meet performance requirements in critical environments, with support for redundancy and efficient communication
•Interoperability between devices from different manufacturers
•Reduced configuration and maintenance costs.
•Support for advanced applications, such as automation and real-time monitoring
The implementation of IEC 61850 standard in an application allows an efficient integration with compatible devices, ensuring reliable and adaptable operation in modern substations.
IEC 61850 standard was originally developed for Ethernet-based communication using the MMS protocol, as specified in IEC 61850-8-1, focused on local substation networks. In 2018, IEC 61850-8-2 standard introduced an alternative based on the XMPP protocol, primarily focusing on communication outside a local network, expanding its applicability. Thus, this Driver allows users to select one of these protocols as the transport layer. This standard also defines an Ethernet-based data exchange known as GOOSE, which is not currently implemented in this Driver.
Systems implementing this standard as data servers, typically IEDs or protection relays, organize information based on the following entities:
•Logical Devices or LD: Represent logical devices corresponding to a physical or functional device, such as a bay mapped to an IED (Intelligent Electronic Device). They correspond to the first hierarchical level in an IEC 61850 Server, grouping related logical functions to facilitate modeling and management
•Logical Nodes or LN: Virtual representations of functions or components of a real device, mapped within a Logical Device. For example, a circuit breaker in a bay is represented by a Logical Node with the standard class XCBR. A Logical Device typically contains multiple Logical Nodes, each corresponding to a specific function, such as protection, control, or measurement
•Data Objects or DO and Data Attributes or DA: Information within a Logical Node is organized into Data Objects, which represent specific data sets related to a function. Each Data Object consists of Data Attributes, which describe detailed properties, such as values, states, or configurations. A set of Data Attributes in a Data Object follows a defined structure known as CDC (Common Data Class), ensuring standardization and interoperability
•Functional Constraint or FC: Specific services that can be applied to each Data Attribute and are part of an object's path
The format used by this Driver for all Tags representing Data Objects or Data Attributes is the following:
•Device Parameter: Server:LD, such as "AL_07:AL_07PRO"
•Item Parameter: LN$FC$Data$DataAttribute, such as "XCBR1$ST$Mod$stVal"