INNOVATIVE VSC TECHNOLOGY FOR INTEGRATION OF “ GREEN ENERGY ”-WITHOUT IMPACT ON SYSTEM PROTECTION AND POWER QUALITY

In Europe, wind power is gathering pace. However, even in case of offshore areas with strong winds, wind power is highly fluctuating, which has a significant impact on voltage and frequency stability in the grid. Therefore, “Green Energy” is a an issue for Grid Code compliance and Power Quality in transmission and distribution systems as well. In order to provide Grid Access to offshore wind farms, subjected to fluctuations and often situated far from the coast, it is necessary to find solutions, which can provide the required voltage quality at the point of grid coupling. This will help make the regenerative energy resources fit for the grid, and to connect them according to the conditions of each particular Grid Code. This is where modern power electronics with dynamic fast control comes into play, which makes the grid more flexible, and subsequently able to take in more regenerative and distributed energy sources. A flexible grid such as this is referred to as a “Smart Grid” [1].