Double-loop power supply generally means that a load has two power supplies, which are connected from different switches of the superior distribution station. During normal operation, one power supply is used and the other is in standby state; When the main power supply fails, the user-side automatic switching device switches the power supply to ensure uninterrupted power supply to the load.

Dual power supply generally means that two power supplies come from different substations (or distribution stations), so that there will be no voltage loss of two power supplies at the same time. This mode is generally used for power supply for particularly important users, such as airports, railway stations and hospitals. The above places also have their own power generation capacity.

2. Different working methods

This loop in the double loop refers to the loop coming out of the regional substation. The dual power supplies are different and independent from each other. After one power supply is cut off, the second power supply will not be cut off at the same time, which can meet the power supply of primary and secondary loads. Double circuit generally refers to the terminal. After one line fails, the other standby line is put into operation to supply power to the equipment.

3. Different in nature

Double-loop power supply refers to two lines with the same voltage at two locations in two substations or one substation.

Of course, the dual power supply comes from two power sources (different in nature), and of course there are two feeders; If you mean power supply, it is a dual power supply.

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