Magazine Volume 3 Issue 2

Overvoltages due to Wind Power - Hosting Capacity, Deterministic and Statistical Approaches

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This paper introduces methods to quantify the impact of wind power and other types of distributed generation on the overvoltage risk. The so-called hosting capacity approach, introduced in the very first issue of this magazine, is used as the basic approach. Both a deterministic and a statistical approach are introduced. The deterministic approach is suitable for generation with a constant production most of the time. However, it is shown that a deterministic approach could easily result in an unnecessary barrier against the introduction of wind power.

Last Updated on Tuesday, 15 March 2011 11:37 Read more...

Dynamic Current Limitation to Provide Interactive Features of Power-Electronics Interfaced Distributed Generation

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This paper proposes a simple DC current chopper combined with the reactive power control, in order to provide specific interactive capabilities for power-electronics interfaced distributed generation units. The chopper provides a dynamic current limitation capability. During voltage disturbances, it can reduce the active current command to allow more reactive current to be injected into the grid. The proposed controller has been implemented for the mitigation of voltage magnitude variations at the connection point.

Last Updated on Tuesday, 15 March 2011 11:37 Read more...

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