BS EN 61400-25 series for wind turbines

BS EN 61400-25 is a series of standards for vendors (manufacturers, suppliers), operators, owners, planners, and designers of wind power plants. It is also useful for utility companies operating in the wind energy market. BS EN 61400-25 is the international standard for communications in the domain of wind power plants.

The BS EN 61400-25 series provides a uniform communications basis for the monitoring and control of wind power plants. It defines wind power plant specific information, the mechanisms for information exchange and the mapping to communication protocols. The BS EN 61400-25 series defines details required to exchange the available information with wind power plant components in a manufacturer-independent environment.

The wind power plant specific information describes the crucial and common process and configuration information. The information is hierarchically structured and covers for example common information found in the rotor, generator converter and grid connection. The information may be simple data (including timestamp and quality) and configuration values or more comprehensive attributes and descriptive information, for example engineering unit, scale, description, reference, statistical or historical information. All information of a wind power plant defined in the BS EN 61400-25 series is name tagged. A concise meaning of each data is given. The standardized wind power plant information can be extended by means of a name space extension rule. All data, attributes and descriptive information can be exchanged by corresponding services.

The implementation of the BS EN 61400-25 series allows SCADA systems (supervisory control and data acquisition) to communicate with wind turbines from multiple vendors. The standardized self-description (contained either in a XML file or retrieved online from a device) can be used to configure SCADA applications. Standardization of SCADA applications are excluded in the BS EN 61400-25 series but standardized common wind turbine information provides means for re-use of applications and operator screens for wind turbines from different vendors. From a utility perspective unified definitions of common data minimize conversion and re-calculation of data values for evaluation and comparison of all their wind power plants.

The BS EN 61400-25 series can be applied to any wind power plant operation concept, i.e. both individual wind turbines, clusters and more integrated groups of wind turbines. The application area of the BS EN 61400-25 series covers components required for the operation of wind power plants, i.e. not only the wind turbine generator, but also the meteorological system, the electrical system, and the wind power plant management system. The wind power plant specific information in the BS EN 61400-25 series excludes information associated with feeders and substations. Substation communication is covered within the BS EN 61850 series of standards.

The intention of the BS EN 61400-25 series is to enable components from different vendors to communicate with other components, at any location. Object-oriented data structures can make the engineering and handling of large amounts of information provided by wind power plants less time-consuming and more efficient. The BS EN 61400-25 series supports scalability, connectivity, and interoperability.

The BS EN 61400-25 series includes:

BS EN 61400-25-1:2007
Wind turbines. Communications for monitoring and control of wind power plants. Overall description of principles and models

BS EN 61400-25-2:2007
Wind turbines. Communications for monitoring and control of wind power plants. Information models

BS EN 61400-25-3:2007
Wind turbines. Communications for monitoring and control of wind power plants. Information exchange models

BS EN 61400-25-5:2007
Wind turbines. Communications for monitoring and control of wind power plants. Conformance testing

More standards for wind power and wind turbine design, manufacture, installation, usage and maintentance include:

PD IEC/TR 61400-24:2002
Wind turbine generator systems. Lightning protection

PD CLC/TR 50373:2004
Wind turbines. Electromagnetic compatibility

BS EN 61400-1:2005
Wind turbines. Design requirements

BS EN 61400-2:2006
Wind turbines. Design requirements for small wind turbines

BS EN 61400-3:2009
Wind turbines. Design requirements for offshore wind turbines

BS EN 61400-12-1:2006
Wind turbines. Power performance measurements of electricity producing wind turbines

BS EN 61400-21:2008
Wind turbines. Measurement and assessment of power quality characteristics of grid connected wind turbines 

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