Alcad storage to supply corrosion protection15 November 2018
Alcad, a manufacturer of nickel-technology battery solutions for industrial power backup, has supplied battery systems to form the heart of a solar-powered cathodic protection scheme at Qatar Petroleum’s Dukhan Gas Field.
TSS4U, a specialist solar system integrator, has incorporated the Alcad batteries, which are built to withstand the desert heat, and therefore ensure a high level of resilience for equipment in the gas field, as well as solar photovoltaic modules, cathodic protection equipment and controllers into six autonomous systems that will protect the integrity of gas wellhead casings.
Alcad supplied a total of 114 cells in six battery systems, each of which comprises 19 Alcad PV1115 cells. Each battery system stores up to 1030 Ah of energy and supplies 24V to provide up to 3 days of autonomous operation for cathodic protection and up to 7 days of power for communication and control equipment.
At the heart of the solar-powered cathodic protection application, the battery systems are designed to store solar energy throughout the day and discharge it to provide a continuous electrical current to the steel wellhead casings that maintains a small electrical charge in the steelwork. This charge prevents rusting. Because overcast days are rare in the desert climate, 3 days of reserve energy will ensure that the system is able to operate continuously.