FEATURE
POWER
HigH reliability power supplies Help increase
offsHore wind turbine safety
PULS Power is supporting a university project which is aimed at detecting damage to the grout connections in offshore wind turbines, as Maximilian Hülsebusch – PULS Power marketing team, explains
W
ith the continued growth of green energy, it is increasingly important to ensure robust and durable solutions for
power generation in order to ensure continued service and reliability for decades. However, offshore wind turbines present
particular challenges for operators and manufacturers alike. Constantly exposed to harsh and extreme environmental conditions, these turbines require modern monitoring solutions that can measure external influences such as vibrations and structural safety.
early damage detection
Grouted connections in offshore wind turbines are formed by attaching overlapping steel piles with an ultra-high strength cementitious grout, and their structural performance is critical for the substructures to exhibit sufficient resistance to environmental loads. As part of the large In-Situ-WIND project,
the University of Siegen is developing a monitoring system to detect damage to the grout connections in offshore wind turbines. For the system development, two different
approaches are being pursued – one which is based on radar technology; and the other looking at vibration technology. The focus of the research team is on the
development of algorithms to compensate for EOC effects (Environmental and Operational Conditions) on the existing damage characteristics. The team is also developing damage detection approaches with indicators that are sensitive to changes in the grout connections but not affected by changes in the load and operating conditions of the turbine itself. A broad database, recorded under real
offshore conditions, is very important for developing algorithms. This is why the measurement system is already installed in a working wind turbine near Helgoland.
reliable and fail-safe power supplies
PULS Power is supporting the project by providing a number of robust power supplies, as well as electronic circuit breakers and DC UPS units, which supply the measurement and data acquisition system with electrical power.
As the system design requires a very high
level of reliability and availability, the design team chose PULS 480W power supplies with an integrated decoupling feature (CP20.241-R1). These units allow the design of a redundant power supply system without the need for an additional redundancy module. In addition, one CP20.241-R1 power supply is connected to a DC UPS unit and the electronic circuit breaker (PISA-B-812-B1) is used to safely distribute the current within the system. The design team also uses the relay contact
provided by the power supply units and the electronic circuit breaker for system diagnosis via connection to an industrial PC (IPC), which also serves as a data acquisition interface.
PULS Power
www.pulspower.com
PULS Power is happy to support important research projects in renewable energy and other emerging technologies such as electric vehicles and Industry 4.0
4 DESIGN SOLUTIONS DECEMBER/JANUARY 2022 2
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