Fulfilment of grid code obligations by large offshore wind farms clusters connected via HVDC corridors

The foreseen high penetration levels of wind power will force the systems operators to apply restrictive constraints on wind power plants. The ability of offshore wind clusters, which are connected via HVDC, to fulfill the grid codes, especially those related to voltage stability is investigated. This came in the frame of a project to develop an integrated and practical tool to design offshore wind clusters (EERA-DTOC). The applied case studies examine the system stability during and after severe disturbances, and the compliance with the grid codes. Additionally, this paper explains the applied procedure to utilize the outcomes of Net-OP tool, which proposes an optimized topology to connect the wind power clusters to the interconnected power systems. The integrated simulation environment, namely, PSS/E, is used to implement a highly detailed and dynamic model based on the recommendations of Net-OP tool. The results confirm that wind farm clusters respond to faults and disturbances as desired by the grid codes

'Entomophagy': an evolving terminology in need of a review

There is growing interest in insects as human food in academia, food and agricultural industries, public institutions and the public at large. Yet many of the words and concepts used to describe these organisms and the human practices surrounding them are still rudimentary, compared to the diversity of the organisms themselves and the existing complexity and rapid evolution of the practices they aim to describe. The goals of this paper are to: (1) show how the roots of the term ‘entomophagy’ and its uses have evolved over time; (2) illustrate some of the term’s problems that necessitate its review; and (3) offer recommendations for use of the term in future research and other practice. Our paper offers a brief historical review of insect eating as described by certain Western cultural sources, explores some of the taxonomic ambiguities and challenges surrounding the category ’insects’, and ultimately argues for more precise and contextual terminology in this both richly traditional and rapidly developing field