BS EN 61400-25-2:2015 series is on the communications between wind power plant components such as wind turbines and actors such as SCADA systems. Internal communication within wind power plant components is outside the scope of the IEC 61400-25 series.

The IEC 61400-25 series is designed for a communication environment supported by a clientserver model. Three areas are defined, that are modelled separately to ensure the scalability of implementations:

• wind power plant information models,
• information exchange model, and
• mapping of these two models to a standard communication profile.

The wind power plant information model and the information exchange model, viewed together, constitute an interface between client and server. In this conjunction, the wind power plant information model serves as an interpretation frame for accessible wind power plant data. The wind power plant information model is used by the server to offer the client a uniform, component-oriented view of the wind power plant data. The information exchange model reflects the whole active functionality of the server. The IEC 61400-25 series enables connectivity between a heterogeneous combination of client and servers from different manufacturers and suppliers.

As depicted in Figure 1, the IEC 61400-25 series defines a server with the following aspects:

• information provided by a wind power plant component, for example "wind turbine rotor speed" or "total power production of a certain time interval", is modelled and made available for access;
• services to exchange values of the modelled information defined in IEC 61400-25-3;
• mapping to a communication profile, providing a protocol stack, to carry the exchanged values from the modelled information (IEC 61400-25-4).

The IEC 61400-25 series only defines how to model the information, information exchange and mapping to specific communication protocols. The standard excludes a definition of how and where to implement the communication interface, the application program interface and implementation recommendations. However, the objective of the standard is that the information associated with a single wind power plant component (such as a wind turbine) is accessible through a corresponding logical device.

IEC 61400-25-2 specifies the information model of devices and functions related to wind power plant applications. In particular, it specifies the compatible logical node names, and data names for communication between wind power plant components. This includes the relationship between logical devices, logical nodes and data. The names defined in the IEC 61400-25 series are used to build the hierarchical object references applied for communicating with components in wind power plants.


Cross References:
IEC 61400-25
IEC 61400-25-1
IEC 61400-25-3:2015
IEC 61400-25-4
IEC TS 61400-26-1:2011
IEC 61850-5
IEC 61850-7-1:2011
IEC 61850-7-2:2010
IEC 61850-7-3:2010
IEC 61850-7-4:2010
ISO 639
ISO 80000-1
ISO 3166
IEEE 754
EN 61400-25-1
EN 61400-25
FprEN 61400-25-3:2015
EN 61850-5
EN 61850-7-1:2011
EN 61850-7-2:2010
EN 61850-7-3:2011
EN 61850-7-4:2010
EN ISO 80000-1


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