Electrical transformation substation
An electric power transformation substation includes a containment box including first, second and third box compartments. The box compartments define a respective compartment and are arranged adjacent to one another in a longitudinal direction when the substation is in a position of use, the second box compartment being arranged between the first and third box compartment. Medium-voltage switchgear is in the first box compartment. An electrical power transformer in the second box compartment converts a medium-voltage power into low-voltage power. Low-voltage switchgear is in the third box compartment. The containment box includes a box bottom wall which, in the position of use lies on a support surface, a box upper wall, first and second box side walls, and box front and rear walls. The first side wall and the second box side wall laterally delimit the first box compartment and the third box compartment, respectively.
1 . An electrical transformation substation comprising:
a containment box extending along a longitudinal direction and comprising a first box compartment, a second box compartment and a third box compartment, wherein the first, second and third box compartments each define a respective compartment and are arranged adjacent to one another in the longitudinal direction when the electrical transformation substation is in a position of use, the second box compartment being arranged between the first and third box compartments;
a first-voltage switchgear having a first-voltage power and arranged in the first box compartment;
an electrical power transformer configured to convert the first-voltage power into a second-voltage power lower than the first-voltage power and arranged in the second box compartment, and
a second-voltage switchgear having the second-voltage power and arranged in the third box compartment, wherein the containment box comprises a box bottom wall which, in the position of use lies on a support surface, a box upper wall opposite the box bottom wall, a first and second box side walls opposite to one another, a box front wall and a box rear wall opposite the box front wall, and the first box side wall and the second box side wall laterally delimit the first box compartment and the third box compartment, respectively,
wherein the electrical transformation substation further comprises an electronic control panel positioned within the electrical transformation substation at one of the first, second and third box compartments, wherein, in the position of use of the electrical transformation substation, the box upper wall is accessible from an outside of the electrical transformation substation and comprises an inspection opening and the electronic control panel is arranged at and near the inspection opening so as to be accessible from the outside through the inspection opening.
2 . The electrical transformation substation in accordance with claim 1 , wherein the first and third box compartments are separated from the second box compartment by respective first and second partition walls extending vertically with respect to the box bottom wall.
3 . The electrical transformation substation according to claim 1 , wherein the box front wall comprises a first removable wall section at the second box compartment and the first box side wall or the box front wall comprises a second removable wall section to access the first box compartment, the electrical transformation substation further comprising a third removable wall section arranged on the box front wall at the third box compartment or on the second box side wall, the first, second and third removable wall section being watertight when in a respective closed position.
4 . The electrical transformation substation in accordance with claim 1 , wherein the electronic control panel is operatively connected to a supervisory and control system of substation data comprising data relating to an operation and functioning of the first-voltage switchgear, the second-voltage switchgear and the electrical power transformer, the electronic control panel comprising a human-machine interface configured to display the substation data and/or to enter commands executable by the supervisory and control system.
5 . The electrical transformation substation in accordance with claim 1 , wherein the inspection opening is provided with a protective cover removable or that can be opened, the protective cover being watertight when in a closed position of the inspection opening.
6 . The electrical transformation substation in accordance with claim 1 , further comprising a forced-air cooling system comprising a first air intake and a first air extraction device, the first air intake and the first air extraction device being arranged on the outside of the electrical transformation substation on the box upper wall and in communication with an inside of the containment box.
7 . The electrical transformation substation in accordance with claim 6 , wherein the first air intake and the first air extraction device are arranged at respective openings formed in the box upper wall at the second box compartment.
8 . The electrical transformation substation in accordance with claim 6 ,
wherein the forced-air cooling system comprises a second air intake and a second air extraction device which are arranged on the outside of the electrical transformation substation on the box upper wall, the second air intake and second air extraction device at respective openings in the box upper wall, wherein the second air intake is arranged at the first box compartment or the third box compartment and the second extraction device is arranged at the third box compartment if the second air intake is arranged at the first box compartment or at the first box compartment if the second air intake is arranged at the third box compartment.
9 . The electrical transformation substation in accordance with claim 1 , wherein the second-voltage switchgear comprises a plurality of second-voltage input-output switches and the electrical power transformer is electrically connected to the plurality of second-voltage input-output switches by means of a busbar structure configured to transport the second-voltage power, and wherein the busbar structure comprises a plurality of input busbars connected to respective inputs of the plurality of second-voltage input-output switches and a respective plurality of output busbars connected to respective outputs of said plurality of second-voltage input-output switches.
10 . The electrical transformation substation in accordance with claim 9 , wherein the second box side wall is provided with a plurality of through-holes designed for inserting second-voltage energy cables for a connection to busbars of the plurality of output busbars.
11 . The electrical transformation substation in accordance with claim 1 , wherein the first and third box compartments are separated from the second box compartment by respective first and second partition walls extending vertically with respect to the box bottom wall so as to separate the first and second box compartments from each other and second and third box compartments from each other, and each of the first and the second partition walls includes one or more openings.
12 . The electrical transformation substation in accordance with claim 1 , wherein the first-voltage switchgear is arranged on the box bottom wall at the first box compartment and the box bottom wall comprises respective two or more through-holes configured for a passage of respective first-voltage energy cables from the outside of the electrical transformation substation and from below with respect to the box bottom wall for a connection with the first-voltage switchgear.
13 . The electrical transformation substation in accordance with claim 1 , wherein at least one substation first-voltage cable connects the first-voltage switchgear to the electrical power transformer at a side of the electrical power transformer facing the first box compartment and wherein the at least one substation first-voltage cable has a first cable end and a second cable end, the first cable end being connected to the first-voltage switchgear and the second cable end being connected to the power transformer.
14 . The electrical transformation substation in accordance with claim 13 , wherein:
the at least one substation first-voltage cable passes through a respective at least one through-hole formed in the box bottom wall at the first box compartment for a connection of the first cable end with the first-voltage switchgear, and
the at least one substation first-voltage cable exits from below the box bottom wall and has a path that runs on the outside of the electrical transformation substation to enter the electrical transformation substation again from below through an opening in the box bottom wall arranged at the second box compartment to enter the electrical transformation substation and connect the second cable end of the substation first-voltage cable to the electrical power transformer.
15 . An electrical transformation substation comprising:
a containment box extending along a longitudinal direction and comprising a first box compartment, a second box compartment and a third box compartment, wherein the first, second and third box compartments each define a respective compartment and are arranged adjacent to one another in the longitudinal direction when the electrical transformation substation is in a position of use, the second box compartment being arranged between the first and third box compartments;
a first-voltage switchgear having a first-voltage power and arranged in the first box compartment;
an electrical power transformer configured to convert the first-voltage power into a second-voltage power lower than the first-voltage power and arranged in the second box compartment,
a second-voltage switchgear having the second-voltage power and arranged in the third box compartment, wherein the containment box comprises a box bottom wall which, in the position of use lies on a support surface, a box upper wall opposite the box bottom wall, a first and second box side walls opposite to one another, a box front wall and a box rear wall opposite the box front wall, and the first box side wall and the second box side wall laterally delimit the first box compartment and the third box compartment, respectively, and
a forced-air cooling system comprising:
a first air intake and a first air extraction device being arranged on an outside of the electrical transformation substation on the box upper wall and in communication with an inside of the containment box, the first air intake and the first air extraction device are arranged at respective openings formed in the box upper wall at the second box compartment, and
a second air intake and a second air extraction device being arranged on the outside of the electrical transformation substation on the box upper wall, the second air intake and second air extraction device at respective openings in the box upper wall, wherein the second air intake is arranged at the first box compartment or the third box compartment and the second extraction device is arranged at the third box compartment if the second air intake is arranged at the first box compartment or at the first box compartment if the second air intake is arranged at the third box compartment.