IEC TC 88 PT 25
IEC 61400-25 - Communications for monitoring and control of wind power plants
NEW Project approved, August 2005 (88/245/RVN)
IEC 61400-25-6
Communications for monitoring and control of wind power plants -
Part 6: Logical node classes and data classes for condition monitoring
Introduction
The information models and the information exchange of the various condition monitoring systems for wind power plants are very diverse. The communication with the variety of pro-prietary solutions produces unnecessary high costs for the design, engineering and maintenance of the information to be exchanged with condition monitoring systems and for the training of personnel.
The IEC TC 88 Project Team (PT) 25 “Communications for monitoring and control of wind power plants” specified information models and information exchange for the operation of wind power plants. PT 25 has identified the need for a standard on wind power plant specific information models for condition monitoring systems. The definition of the common information models requires domain experts of condition monitoring for wind power plants. The current project team 25 has mainly members dealing with operational issues of wind power plants. To get support from the domain experts of condition monitoring, members of the PT 25 proposed to define such information models in a separate project – in close cooperation with PT 25 members.
Scope
Information models for the communication of meaningful information provided by condition monitoring systems. These systems are applied for all crucial components of wind power plants, e. g., for the turbine tower, gear box, generator, transformer, oil quality etc.
Objective of new work
The key definition of this standard will be on information models with regard to any crucial kind of information produced and consumed by the condition monitoring system for diagno-sis and subsequent prognosis as well as for machine protection.
The main areas for which information is described and modelled are:
- Structure
- Components
- Gearbox
- Generator
- Bearings
- Rotor blades
- Hydraulics
- Pitch
- Transformer
- Brake
- Clutches
- Azimuth drive
- Examples of crucial measurements to be defined in the standard are:
- Temperatures (Contact measurements and Thermographs)
- Oscillations, Vibrations
- Pressure (absolute/differential)
- Particle concentration oil
- Electrical Measurements (U, I, P, Q,...)
- RPM (Rotor, Generator)
- Force/Torque
- Rotor position (Rotor angle)
- Wind speed and -direction
- Material condition (fatigue, wear, stiffness, corrosion, ...)
The information models defined in this standard are intended to be extrapolated from the in-formation models for the electrical power system already defined in IEC 61850 Communica-tion networks and systems in substations.
It is expected that the information exchange services and mappings to specific communica-tion protocols defined in IEC 61400-25 (resp. IEC 61850) are sufficient for condition monitor-ing systems.
In case further common definitions are required, the coordination with other groups (see next paragraph) is highly recommended – to get a set of consistent definitions for the whole electric power system.
Coordination with other groups:
- IEC TC 88 PT 25 (Communications for monitoring and control of wind power plants)
- IEC TC 57 WG 10 (Power system IED communication and associated data models)
- IEC TC 57 WG 17 (Communications Systems for Distributed Energy Resources (DER))
- IEC TC 57 WG 18 (Hydroelectric power plants – Communication for monitoring and control)
Related documents:
- all parts of IEC 61400-25
- all parts of IEC 61850
- all parts of IEC 62344
- all parts of IEC 62350
Justification:
When the scope for IEC 61400-25 was defined in 2001, it was deliberately limited to the in-tegrated main components of a wind power plant. In order for this standard to be fully util-ized – as a seamless solution – in wind power plants, condition monitoring systems, decen-tralized energy resources, power quality monitoring, and hydropower plants, a number of additional consistent set of logical nodes, data objects and common data classes are needed.
Who should be involved?
- Vendors of wind turbine systems
- Vendors of condition monitoring systems
- Users of wind turbine and condition monitoring systems
Contact: Karlheinz Schwarz, SCC
