You Do Need power plug adapter while traveling from South Sudan to British Virgin Islands.

Here is Why You Need An Adapter

The outlet and plug type used in British Virgin Islands are A and B and in South Sudan are C and D. This is how they look like.

South Sudan

In South Sudan, outlets of type C and D are in use.

Type C

Type D

British Virgin Islands

In British Virgin Islands, outlets of type A and B are in use.

Type A

Type B