OPERATION AND CONTROL OF OFFSHORE WIND FARM CONNECTED TO HIGH VOLTAGE DIRECT CURRENT TRANSMISSION SYSTEMS

Abstract

Offshore Wind Farm (OWF) has been gained a wide acceptance nowadays as it is deemed one of the extremely used renewable energy source owing to its wide utilization all over the world and the major unexploited wind energy as well as better wind circumstances. One of the main parts in this system is the controller itself, so the appropriate selection of effective controllers is considered important and necessary.

The significant problem facing the renewable resources and impedes their spread and widespread use of them to support the unified network is their control structure. This control structure is very complicated and consumes a long time. So, many researaches have been directed towards the new control algorithms and techniques to defind the main controllers parameters. Among the most important and most frequently used controllers in OWF connected to High Voltage Direct Current (HVDC) transmission systems and in almost of practical experiments and in industries applications are Proportional-Integral (PI) and Fuzzy Inference System (FIS) controllers. FIS is commonly utilised in inverter control stations in many applications due to its appropriate for use in a nonlinear system and involves no mathematical modelling. Thus, FIS is chosen to improve the performance of the converter/inverter stations in the studied model.