Pole mounted CCTV cameras are usually used to monitor the solar farms and typically comprise both thermal cameras and day/night cameras. These monitor the areas within the perimeter fence only and as they utilise infrared technology no artificial lighting is required.
The function of the DNO substation (or ‘transfer station’) is to regulate the electrical current flow of the solar PV farm and adjusts the voltage using reactive power. An underground AC cable will connect the solar farm to the DNO substation and then on to the Point of Connection (i.e. to the electricity distribution network).
Energy storage systems offer the opportunity to store surplus electricity for use at times of high demand, thus it can help maintain security of electricity supply in the UK. On a number of projects we have developed energy storage containers (i.e. battery storage facilities) which will be installed with a storage capacity of approximately 2 MWh each. The external structure that accommodates the battery system comprises of a standard 40ft intermodal container.
The inverter is a power conversion device that converts Direct Current (DC) generated by the solar arrays into Alternating Current (AC). The transformers convert the low voltage output from the inverters to high voltage that is suitable for exporting onto the electricity distribution network.
The modules are mounted in arrays that cross the site from east to west, mounted on steel frames so the modules are oriented due south.
The distance between each row of solar array ranges from around 5-8m, with approximately 25-30% of the total site area covered by the arrays.
The panel structures typically have a maximum height of 2.5m and slope down to a lower edge approximately 0.8m above the ground. The substructure of the array usually extends 1.0-1.5m below ground.
The customer substation (or ‘collecting station’) contains the electrical switchgear, which are used to control, protect and isolate electrical equipment at the solar farm.