Due to Britain’s ageing electricity infrastructure, Iberdrola’s subsidiary Scottish Power are investing in a multi-billion pound scheme to upgrade the grid both in Scotland and in other parts of the United Kingdom. A good proportion of this investment is related to the upgrading of the existing electrical substations and the construction of new ones to link up with the new greener energy generation. Having manufactured support steelwork for many of these sites previously, either directly to Iberdrola or via their EPC’s, the opportunity to manufacture and install the support steelwork and also the HV equipment that performs the key transmission role was afforded to us based on our company credentials, the need for more specialist installation teams and the large size of the project. The substation site serves 96 wind turbines directly, with a generating capacity of 236MW directly and acts as a connector to the adjacent Markhill site which has 28 turbines with a generating capacity of 56MW. The site is situated in Dumfries and Galloway, 6 miles off the main road, providing major communication and logistic issues.
Power System Services manufactured the 66 tonnes of steelwork, including post insulators, HAM structures etc, utilising our CNC laser-cutting, and drilling facilities at our factories in Chesterfield, Derbyshire. The structures were then galvanised and delivered to site.
Power System Services then deployed an experienced team to site who quickly familiarised themselves with the required techniques to erect this critical equipment. Utilising a few experienced approved sub-contractor personnel and with the guidance of Kirby and Iberdrola, we successfully completed all mechanical erection works within the 4 month programme with no accidents, incidents or near misses. Installed equipment included:
Post insulators, surge arrestors, disconnectors, earth switches, marshalling kiosks, circuit breakers, voltage transformers, HAM structures, busbars and earthing of the structures.