Complete transformer substations 35/0.4 kV of the «Peresvet» series


Complex transformer substation (CTS) – a prefabricated aggregate structure designed to receive incoming electricity with specified parameters, convert it into a low voltage current and distribute it along connected mains. KTP is controlled by a three-phase current with a frequency of 50 hertz. The KTP layout can be one- and two-transformer and is designed for installation outside the building, and the design features of the external unit allow the use of this equipment in a fairly wide temperature range.

Deliveries of modular and block types of KTP are carried out in disassembled form. Several modules of a high degree of readiness are sent from the factory. Their overall dimensions make it possible to quickly deliver the cargo to the installation site, which is carried out in a short time thanks to the connecting elements provided by the design. The result will be a single building assembled from several modules.

Equipment and installation of modules

The production of modules for the assembly of KTP begins with the assembly of a metal welded frame, which is sheathed on all sides with sandwich panels for insulation. The compartments are covered with metal doors having several layers. Inside the doors there is a warming layer of mineral wool.

After assembly, the KTP building will be equipped with several engineering systems:

  • heating;

  • ventilation;

  • interior lighting throughout the area.

Each of the systems is controlled automatically. Due to the presence of these communications, the equipment installed inside the substation is constantly in optimal conditions. In particular, maintaining an acceptable microclimate is important for relays, continuous power supply units, various electronics, etc.

The basis for the assembly of all types of substations is a concrete foundation. The input and output ports for voltage transfer can be either air or cable: it depends on the characteristics of the existing electricity consumers.

Classification of modules

KTP are equipped with a switchgear from the high voltage side. For this unit, several options of peripheral devices are offered that expand its functionality. These can be KSO cameras, KV-1F devices and others.

The main room of the block-modular substation is the transformer compartment. It houses the main nodes of the KTP – electric power converters. Depending on the needs, the number of converters may vary.

The low voltage output electrical line is also controlled by its own switchgear (RUNN). It comes complete with circuit breakers, manual switches, switch cabinets and other equipment operating from low voltage.

Special attention is paid to the issue of equipment protection from emergency situations. To do this, a whole compartment is allocated for relay protection panels and automated devices that monitor the operation of the KTP and, if necessary, de-energize certain segments of the substation.

Advantages of using KTP

In addition to their adaptability and autonomy, complete transformer substations have a number of advantageous parameters:

  • durable external coating that allows you to reliably protect the equipment from the weather, temperature changes and other negative factors;

  • easy installation and quick commissioning;

  • guaranteed reliability of the supplied equipment;

  • a simple process of transporting modules to the assembly site.

The use of KTP in the organization of backbone networks makes it possible to simplify the process of power supply. Modern technologies implemented in production ensure compatibility with any consumers.