Underground modular transformation centre that is resistant to disasters and adverse conditions

An underground modular transformation centre system that is resistant to disasters and adverse conditions, the transformation system comprising:

• a transformation centre comprising:
• a resistant enclosing body having two ends, a coupling system arranged in each of said two ends and closing covers joined to the coupling system;
• an assembly hatch with an upper watertight access cover of the assembly hatch for inserting switchgear and a manhole hatch with an upper watertight access cover of the manhole hatch for the access by people;
• high-voltage protection and operating elements, a power transformer and low-voltage protection and operating elements inside of the transformation centre;
• tubes passing from the outside to the inside for placing electrical conductors having elements that provide watertightness to said electrical conductors and tubes for circulating a coolant;
• the transformation centre being modular and configured to be longitudinally connected to other transformation centres through the coupling system arranged in the ends of the enclosing body;
• and
• a longitudinal heat exchanger arranged outside the transformation centre with a dimension similar to the length to this transformation centre, formed by horizontal tubes and heat dissipative sheets.