What is the function of bus couplers in a substation?

Bus couplers in a substation serve the important role of linking different bus sections together, facilitating operational flexibility. This connection allows for the seamless transfer of electrical loads between separate busbars, which can enhance reliability and enable maintenance activities without interrupting service.

When one bus section requires repair or maintenance, bus couplers allow operations to reroute power through alternate paths, thereby ensuring that the substation can continue to supply power to the grid effectively. They contribute to the overall flexibility and reliability of the electrical distribution, ensuring that if one path becomes unavailable, another can take over its function.

Other options like directly connecting transformers, converting AC to DC, or storing excess power generated do not accurately describe the primary role of bus couplers in a substation. Their specific function is centered around enhancing connectivity and flexibility in the bus system, which is critical for maintaining continuous service and operational efficiency within the electrical infrastructure.