Projects: Projects for Investigator
Reference Number NIA_SHET_0038
Title Ice Mapping
Status Started
Energy Categories Other Cross-Cutting Technologies or Research(Energy Models) 25%;
Other Power and Storage Technologies(Electricity transmission and distribution) 50%;
Other Cross-Cutting Technologies or Research(Environmental, social and economic impacts) 25%;
Research Types Applied Research and Development 100%
Science and Technology Fields ENGINEERING AND TECHNOLOGY (Electrical and Electronic Engineering) 50%;
ENVIRONMENTAL SCIENCES (Earth Systems and Environmental Sciences) 50%;
UKERC Cross Cutting Characterisation Systems Analysis related to energy R&D (Energy modelling) 100%
Principal Investigator Project Contact
No email address given
SSEN Scottish Hydro Electric Transmission
Award Type Network Innovation Allowance
Funding Source Ofgem
Start Date 01 August 2022
End Date 29 February 2024
Duration ENA months
Total Grant Value £359,080
Industrial Sectors Power
Region Scotland
Programme Network Innovation Allowance
Investigators Principal Investigator Project Contact , SSEN Scottish Hydro Electric Transmission (100.000%)
  Industrial Collaborator Project Contact , Scottish and Southern Energy plc (0.000%)
Web Site
Objectives SSEN Transmission will partner with the Met Office in this project. The Met Office will make use of the latest meteorological data sets and science to generate a high-resolution climatology of the relevant meteorological drivers for ice accretion covering the British Isles at multiple heights. Local effects of orography will also be considered to further optimise the Numerical Weather Prediction (NWP)parameters. By combining the latest state-of-the-art NWP parameters and types of mechanisms leading to ice accretion, a new ice accretion model will be developed for several overhead lines and compared to current engineering standards and practices. Potential costs and benefits of using the new design will be reported. The development of an ice load map will be undertaken in two phases split into distinct work packages for each Phase. This approach is to enable the assessment of interim results to either prove or disprove the merits of further development of the model in finer detail. The Phases and Work Packages are as follows:Phase 1• Work Package 1) Discovery Phaseo Requirements workshopo Literature reviewo Expert advice from Supplier scientistso Technical report and Presentation• Work Package 2) Data Retrievalo Extract data meteorological datao Extract engineering and observation datao Extract case study observation data (Iceland, Deadwater Fell, Norway)• Work Package 3) Data Processingo Assess use of Improver wind downscaling moduleo Code Review and QAo Sense check/verification of correct grid point wind speedso Verification analysiso Height and roughness corrected 4km grid point wind speed climatology capability• Work Package 4) Ice Accretion Modelling and Validationo Code development for wet snow, in-cloud-rime and freezing fog rime (same as in-cloud model for Phase 1o Inspect output and determine independent icing events from time series of ice accretion model output, including occurrence of different icing events occurring at same time (take max ice load).o Code review and QAo Verification analysis (met input verification, case study, sense checkso Verification Reporto 4km resolution ice accretion modelling capability. Deliverable: Report• Work Package 5) Extreme Value Modellingo Select events for EVA (e.g. by peak-over-though or annual max)o Compute EVA of 1-in-50 year return ice loadso Sensitivity analysis (on e.g. ice groupings, altitude, conductor)o Code review and quality assuranceo Sensitivity analysis report (case study)o 4km resolution extreme value ice loading capability. Deliverable: Report.• Work Package 6) Mapping and Data Deliveryo Mapping of ice load results over SSEN Transmission network areao Present resultso 50-year return ice load data packaging/deliveryPhase 2Following a successful outcome from Phase 1 proving the validity for further developing the model, the Work Packages for Phase 2 will broadly include:• Discovery phase• Additional 1 in x year events• Grid map analysis• Additional height and asset size modelling• Final mapping and data outputs The main objective of the project is to assess whether replacement of Figure NA.2 of BS EN 50341-2-9 with new ice design values derived from the application of state-of-the-art NWP values and revised Ice Accretion model would benefit customers.
Abstract The current values of radial ice accretion defined in BS EN 50341-2-9:2017 are regarded as conservative with little basis in modern Meteorological science, especially as applied in the North of Scotland. Application of these values may lead to overdesign of overhead lines being designed and constructed to enable the energy system transition.This project will develop a new ice accretion model and integrate it with existing global Numerical Weather Prediction (NWP) models with high granularity topological and orographical parameters. It will thereafter use this composite model with extreme value analysis techniques to derive new values for radial ice accretion, which reflect modern meteorological practice.The new values will be compared with BS EN 50341-2-9:2017 to assess the potential benefits of adopting a new design practice.
Publications (none)
Final Report (none)
Added to Database 14/10/22