Features of Calculation Schemes and Methods for Design of Wind Turbine Foundations for Arctic Conditions

Abstract

Currently, the issue of energy saving of isolated power consumers, supplied by the systems, based on renewable energy sources and hybrid systems, is relevant. A significant part of this consumer category is located in the Arctic regions, with permafrost grounds. The problem of wind power plant construction in such conditions is connected with the foundation design on the permafrost soils. There is a significant native experience in civil and industrial design and construction, which is reflected in the corresponding regulations. However, a wind power plant with a permafrost foundation differs from permafrost-based civil and industrial buildings in terms of mechanical loading and composition efforts. The construction of the wind power plant with a permafrost foundation has a number of peculiarities, associated with the specific loads, transferred from the installation on the basis of: presence of a complex dynamic and fluctuating loads on the rotation of the wind turbine and the nacelle and wind gusts; rotation coordinates efforts related to the orientation of the nacelle to the wind; availability of temporary loads of wind turbine icing on the construction. This paper is dedicated to the accounting of this specificity for the design of the foundation loads for the wind power plant on permafrost, as well as the justification of the selected solution.