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Bladed User Manual
Version 4.4
DISCLAIMER
Acceptance of this document by the client is on the basis that Garrad Hassan
& Partners Ltd is not in any way to be held responsible for the application or
use made of the findings of the results from the analysis and that such
responsibility remains with the client.
COPYRIGHT
All rights reserved. Duplications of this document in any form are not allowed
unless agreed in writing by Garrad Hassan & Partners Ltd.
© 2013 Garrad Hassan & Partners Ltd.
Garrad Hassan & Partners Ltd.
St Vincent’s Works, Silverthorne Lane, Bristol BS2 0QD England
www.gl-garradhassan.com
1. INTRODUCTION
Bladed is an integrated software package for wind turbine performance and loading
calculations.
The Bladed theory manual gives full background information and details of the calculation
methods used. This user manual complements the theory manual by describing the
operation of the user interface. Much of this information is also available in the on-line Help
facility.
1.1 Installation
Bladed is designed to run on PC with the following minimum specification:
OS: XP (service pack 3).
RAM: 2GB
Cores: 2
Clock-speed: 2.5GHz
Resolution: 1024 x 768
Bladed is supplied on CD and is installed by means of a setup program. The setup
procedure suggests an installation directory for the software, but allows the user to change
this if desired. A directory on the local hard disk is recommended.
Except for demonstration and educational versions, a software key or USB dongle is
provided. A network dongle can also be supplied on request. The setup procedure can
install the appropriate device driver and network licence manager.
The setup procedure also allows the installation of the Acrobat Reader if desired, which is
used to view the User and Theory Manuals on screen. It also installs the Matlab runtime
libraries which are used by several modules within Bladed.
The preferred screen resolution is at least 1024 x 768 (small fonts), although a resolution of
800 x 600 is acceptable.
1.2 Bladed modules
The Bladed package consists of a Base module and a number of optional modules, for which
licences are separately available. The Base Module consists of three parts:
Base Module
Capabilities
Main module
Steady state calculations, Saving project files, Writing reports,
Graphics.
Simulation module
Modal analysis, Simulations, Turbulence, Waves, Post-
processing.
Batch module
Running calculations in batch mode.
The following optional modules are available in addition:
Optional Modules
Capabilities
Linearisation
Generation of linearised turbine models.
Seismic
Earthquake simulation.
Hardware test
Test a real turbine controller by interfacing it to a Bladed
simulation running in real time.
Offshore support structure
Multiple member tower and support structure.
Advanced Transmission
Interface
Allows user-defined gearbox/transmission dynamics to be
integrated into Bladed simulations through a DLL interface.
Advanced Pitch actuator
Interface
Allows user-defined pitch actuator dynamics to be integrated
into Bladed simulations through a DLL interface.
Electrical dynamics
Electrical models of generators and power coverters; network
voltage and frequency transients.
Windfarmer link
Site-specific load calculations using Windfarmer output.
1.3 The Bladed Educational version
Bladed Educational is available solely for academic and teaching purposes. Only the Base
Module is available, and there are a number of further restrictions, as follows:
Turbine model:
The number of blade radial stations is limited to 10 maximum;
The number of tower stations is limited to 5 maximum;
The pitch actuator model is fixed to a first order lag response with 0.3s time constant.
No other pitch actuator models are allowed.
The external controller facility is not available.
The use of encrypted data is not supported.
Environment:
Simulation periods are limited to 60s maximum.
The "seed" used to initialise the random number generators used to synthesise wind
turbulence and wave time series is fixed.
Only the longitudinal component of wind turbulence can be used in simulations. (The
other components can be synthesised, but will be ignored in simulations.)
Although the Seismic module is not available, a single seismic calculation is available
for demonstration purposes.
Calculations and post-processing:
Calculations cannot be run in Batch mode.
Model linearisation is not available, except as a demo calculation.
The following post-processing calculations are not available, except as demo
calculations:
ultimate loads
ultimate load cases
linear model
The Extreme Load Extrapolation calculation is not available.
1.4 The Bladed Demonstration version
A demonstration version of Bladed is available.
A demo project, demo_a.prj, is supplied with Bladed and will be found in the installation
folder. This contains simplified details of a representative but artificial 3-bladed 2MW offshore
variable speed pitch regulated turbine. This can be used to run most of the available
calculations.
The demonstration version is restricted as follows:
Operation
Restrictions
Modal analysis calculation
Turbine details may not be changed
Turbulent wind generation
Turbulence details may not be changed
Steady calculations and simulations
Turbine details may not be changed; other calculation
details may be changed
Post processing calculations
Calculation details and input data may not be
changed. The Extreme Load Extrapolation calculation
is not available.
Batch system
Calculations cannot be run in Batch mode.
Saving project files
Not allowed
Writing reports
Not allowed, but a sample report may be viewed.
Encrypted data
Not supported
Graphics: viewing calculation results
Unrestricted
When running a calculation, a message box warns that the appropriate demo data will be
used for the calculation.
Other project files are also supplied for demonstration purposes. Although these can be
viewed, they cannot be used for running calculations.
1.5 Support
Bladed is supplied with a one-year maintenance and support agreement, which can be
renewed for further periods. This support includes a ‘hot-line’ help service by telephone, fax
or e-mail:
Telephone: +44 (0)117 972 9900
Fax: +44 (0)117 972 9901
E-mail BladedAdmin@gl-garradhassan.com
It is Garrad Hassan policy to work with clients to respond to their needs so that the software
can be constantly improved. As with any software of this complexity, a total absence of bugs
cannot be guaranteed, and any reports of bugs, along with comments or suggestions on any
aspect of the software, are welcomed. The maintenance and support agreement includes
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