Metal container transformer stations

Failures or overhauls of transmission grid or transformer substation, the need for temporary supply to the customers and for rapid supply of power, without the option of connection to an MV grid, with the use of a power generator unit are a few examples of factors which resulted in the design of a light substation in a metal enclosure, on a transport chassis with a gross vehicle weight rating GVWR of 3.5T, which can be towed by a truck, for example. The substation enclosure is formed by a light, spatial, self-supporting metal structure made of structural steel connected by welding and bolting. The entire structure is protected against corrosion and powder painted.

Stations use state of the art TPM type MV switchgear in gas insulation and RN-W type LV switchgear with the possibility of connecting a power generator unit, operated from the outside, after previously opening the doors to an appropriate compartment. These switchgear are commonly used in the commercial power sector as elements which provide power supply and protection to transformer units.

The station may house a transformer with a maximum power up to 400 kVA (with gravity ventilation), installed after roof removal. The transformer is permanently installed in the substation, which enables it to be transported without the need to remove the transformer.

The presented solution should be considered an example. ZPUE S.A. has in its offer a very wide range of transformer substation and MV and LV switchgear solutions, which enable the performance of very advanced control and protection functions, including automation logic which enables uninterrupted restoration or reconfiguration of the power supply. These solutions are selected individually and may differ from the one presented in the publication.

Station dedicated to emergency power supply with the possibility of power supply from an overhead or cable line.

Due to the design and dimensions - the height above the ground level is only 1700 mm and the low weight - including the ~ 8T transformer, a station dedicated to large-scale photovoltaic installations - installation between the tables with panels. The station is mounted on a concrete foundation and can be transported as a whole, including the transformer.

Due to the modular design, it is possible to create a wide range of substation configurations based on standard modules, complex configuration based on MV switchgears (in air or gas insulation) and LV switchgears of our own manufacture.

Modular substations are based on a light, self-supporting metal structure. This design enables placement of the station directly on the ground or on previously prepared base, without the need to prepare additional foundations. This shortens the installation time and cost compared to traditional solutions built of brick.

Station dedicated to emergency power supply with the possibility of power supply from an overhead or cable line.

Substation dedicated for emergency power supply, with the possibility of being supplied from an overhead or buried line.