Loss of Generation Ratio Analysis for Offshore Wind Farms

With the development of wind energy techniques, the capacity of offshore wind farms (OWF) is getting larger and the distance to shore is getting longer. This fact results in many different kinds of configurations of the electrical system design within the wind farm. Besides the costs of the wind farm system, which is concerned all the time, the reliability of the electrical system of the wind farm is also very important in the design phase. The index - loss of generation ratio probability (LOGRP) has been proposed to evaluate the reliability of the electrical system within an offshore wind farm. This paper provides further discussion of this index and applies it to a complex system. Comprehensive studies are conducted to investigate the effects of the component ratings, the network topology and other factors on LOGRP with a sample OWF as a reference. The reliability sensitivity is also discussed. The analysis presented in this paper is useful both for future wind farm planning and existing OWF evaluation