A UK PROBABILISTIC WIND/ICE MAP
Currently UK electricity utilities have to build new lines to BSEN50341 and 50423 standards using either the general a pproach to line design (BS8100) or the deterministic empiri cal approach using fixed wind/ice parameters. Currently UK medium voltage lines use a deterministic approach. CENELEC standards allow alternative line designs if evidence can be given of wind/ice loads for the UK. The European Union COST727 project provided the modelling tools necessary to develop a wind/ice map of the UK which will relate weathe r data to conductor ice loads. EA Technology Ltd, UK, has started a Strategic Technology Programme project using these tools to develop such a map. This will allow return periods of wind/ice loads to be evalua ted on a geographical basis. Future UK line design can folio w these new wind/ice loads which are expected to be less onerous than those predicted by the current UK building sta ndard BS8100. The WRF-based icing model developed at the Norway Meteorological Institute under the COST progra mme will be applied to the UK OHL network with the aid of Svein Fikke, a consultant meteorologist who has worked on ice load predictions for Norway and Greenland for many years. The project is currently in the second of three stages. It uses UK meteorological office historical data as well as historical and current data from an EA Technology test site at Deadwater Fell on the English/Scottish Border in the UK. To date preliminary predictions of past events using the WR F model and the Makonnen and Admirat models have proved accurate. The recent severe winter in the UK has also prov ided data from the Deadwater site which monitors ice loads on conductors on a 190m span as well as full meteorological data and video camera coverage.
Brian Wareing
EA Technology Ltd., Capenhurst Technology Park, Capenhurst, Chester, UK, CH1 6ES Svein M Fikke, Meteorological Consultant -Overhead Lines, Lindeveien 1, NO -1470, Lorenskog, Norway
国际会议
The 14th International Workshop on Atmospheric Icing of Structures(第十四届结构物大气覆冰国际研讨会 IWAIS 2011)
重庆
英文
16
2011-05-08（万方平台首次上网日期，不代表论文的发表时间）