Grid integration

Getting it connected

Turning unpredictable winds into a reliable energy source is not necessarily a headache. Rely on LEITWIND´s brain power for perfectly grid code compatible wind power. Rely on LEITWIND turbines for operation characteristics similar to conventional power plants. And rely on the LEITWIND Park Manager for smooth permanent energy production under 24/7 remote supervision by a dedicated expert team.

 

Special frequency converter for perfect grid compatibility

The combination of synchronous generators with IGBT technology in frequency converters produces excellent grid compatibility. LEITWIND frequency converter technology can be flexibly parameterized to a huge range of connection requirements to meet the grid codes of most any operator. The grid side of the LEITWIND frequency converter handles a wide reactive power range and can support even weak and unstable grids. With the full power yield fed through the LEITWIND frequency converter, the generator can be taken off the grid completely if the need arises. Active and reactive power control and an ability to smoothly compensate sudden voltage drops give LEITWIND turbines grid connection characteristics comparable to conventional power plants.

The double electric circuit is an important detail of the modular LEITWIND turbine design: It offers a safe fallback, enabling the system to continue operation in the unlikely case of component failure, adding once more to the superior reliability of LEITWIND turbines. The behavior characteristics during grid disturbances achieved by the LEITWIND converter technology allow wind farms to be connected according to regional grid compliance standards.

 

A smooth ride. Even when things get rough

To meet the demands on the grid connection characteristics of modern wind power plants, LEITWIND turbines offer so called conventional power plant characteristics like low voltage ride through abilities, a wide reactive power setting range for voltage control and automatic output reduction in cases of grid frequency peaks.

Diagram 1 ENG_LR
Diagram 1 ENG_LR

 

Active/reactive power: State-of-the art frequency converter technology gives LEITWIND turbines a wide reactive power setting range. The whole setting range is available over the whole power curve.

Diagram 2 ENG_LR
Diagram 2 ENG_LR

 

Active power management: An oversupply of power in a grid can produce frequency deviations. LEITWIND turbines automatically detect an overfrequency in the grid and react by reducing their power output to counteract the frequency rise.

Diagram 3 ENG_LR
Diagram 3 ENG_LR

 

 

Low voltage ride through: To support grid stability in short voltage drops, LEITWIND turbines are able to ride through low voltage events without disconnecting from the grid. The red line in the graph represents the characteristic minimum below which the turbine will automatically disconnect from the grid. The characteristic parameters will be set according to the relevant grid code.