Hugh Wren's Contact Details

Hugh Wren's Company Details

GreyMatters Global

Bristol, England, United Kingdom • 5 Employees
Utilities

What do we do?...Earthing Design, Simulations and Field AssessmentsRisk Assessment Surveys and measurement for substation or generation schemes on voltages from 11kV to 765kV are undertaken by our highly qualified engineers who assess fault current distribution, undertake earth potential rise mapping, AC interference studies and using the latest industry accepted CDEGS software, create your field assessment study reports, so that your project meet all the latest regulatory obligations, allowing you to make 'informed' decisions on prioritising project costs. Soil Resistivity StudiesUnderstanding the soil and its impact on earth (ground) return current behaviour under fault conditions as part of the Safety Calculations requirements. Soil resistivity is not only a key component to a successful earth/ground design, but it is crucial in 'right-sizing' your design so that the earth (grounding) is matched to the soil in which it's going to be installed. Again, this optimises the design to ensure the earth is fit-for-purpose and your costs are controlled ... no more open cheque book installations! Lightning ProtectionRisk assessment and design undertaken to ensure both the lightning protection and earthing systems can be safely integrated. We use specialist High Frequency software which allows us to model the effects of a lightning stroke to a structure, piece of equipment, tank or substation.We currently work with power generation plants, utility network operators, renewables, data-centres, rail, petrochem, mobile telecoms and large private network systems.