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Different features and technologies help turn wind turbines into even more productive, available, and adaptable assets. By doing so, they fulfill diverse needs and allow the use of as many potential wind power sites as possible.
Wind turbines are often located in remote areas, which can make necessary service visits cost-intensive. Remote diagnostics can limit service visits to an absolute minimum, without compromising plant reliability. Furthermore, vibration and model-based diagnostics enable our experts to detect anomalies extremely early on and proactively prevent potential failures. Since July 2008, this technology has allowed us to proactively detect 97% of all potential gear-tooth cracks and prevent them from becoming fatal.
As more wind power is fed into the grid, stability requirements grow. In the field of grid compliance, Siemens sets the standard. Our NetConverter system delivers full conversion of generated power – efficiently decoupling generator and turbine dynamics from the grid. The system offers maximum flexibility for voltage and frequency control, fault ride-through, and output adjustment. As a result, our wind turbines can be configured to comply with a variety of grid codes in major markets and are easily connected to the grid.
Although Siemens wind turbines are among the quietest on the market, noise from wind turbines may affect people living near wind power plants under certain conditions. In attempting to curb noise emissions, stopping the turbines is not a suitable option. For this reason, we have developed a unique noise control system. At noise-sensitive sites, the wind turbine can switch from normal operation to noise-adjusted operation.
Nature presents us with different kinds of challenges. High wind can create extremely high loads, and as a result wind turbines are normally programmed to shut down if the 10-minute mean wind speed exceeds 25 m/s. This may pose a significant challenge for the grid system – for example, if turbines in large wind farms shut down simultaneously. The High Wind Ride Through system enhances grid stability and replaces fixed-threshold, high-wind shutdown with an intelligent, load-based reduction in output power at very high wind speeds. This solution enables wind turbines to deliver more stable energy production.
De-icing systems enable stable energy output in even the harshest and coldest environments. Siemens’ proven and robust technology uses integrated carbon fiber heating elements along the leading edge of the blade to reduce ice buildup, while fully retaining its aerodynamic profile. By doing so, the de-icing system maximizes performance by minimizing the downtime due to ice buildup on the blades, thereby optimizing production in cold climate conditions.
We can’t change the wind – but we can make sure we get the most out of it. The power boost functionality helps ensure that a wind power plant is always performing to its maximum. This controller feature increases power production of the turbine by raising the output limitation under specific operating conditions. Depending on site conditions, the AEP can be increased by up to 4%. How does it work? Local operating conditions are constantly monitored on a turbine level by the turbine controller and evaluated against the power boost function operational limits. The function is then activated when these operating conditions are within specified limits.
Real-time Power Optimization is achieved through the direct drive generator – which produces power at a rating across a specific range – and the intelligent Siemens Integrated Control System (SICS) working together. The SICS is a control unit, consisting of a turbine controller and a full-scale converter, which optimizes power production and power quality. Using innovative features and reading various parameters from the wind farm control system, the SICS offers real-time Power Optimization based on the needs and conditions of the wind farm. By monitoring various sensors and producing power accordingly, the SICS together with the SCADA system enables different functions as conditions dictate, such as noise-reduced operation, bat protection, and shadow-flicker avoidance. The result is intelligent wind turbines that are continually maximizing your AEP in the face of shifting environment conditions.