RU32642U1 - SMALL TRANSFORMER SUBSTATION - Google Patents

Description

SMALL TRANSFORMER NODSTATION

The utility model relates to industrial construction objects and is intended for receiving, converting and distributing electric energy mainly in areas of rural and suburban cooperative development.

A device for a complete transformer substation (St. Utility Model No. 12292, class Н02В1 / 00) is known, which contains two compartments that are closed by doors with locks, which have an independent method of mounting compartments and are supplied as a single unit.

Known transformer substation (patent No. 2111595, class Н02В1 / 00), consisting of separate functional, weatherproof transformer modules of full factory readiness, the electrical and auxiliary equipment inside which is fully assembled, adjusted and tested at the manufacturer, and equipped with supporting and adjusting devices that allow them to be unloaded, moved and docked, as well as limiters to prevent the rollover of modules. The closest analogue (prototype) of the proposed device is a complete transformer substation of a closed type (utility model certificate No. 2895, class Н02В7 / 00), containing a housing made of reinforced concrete, in which a power transformer, distribution devices high and low are electrically connected to each other. voltage and protective equipment.

The disadvantages of all of the above structures are the low factory readiness for inclusion, insufficient reliability and safety, large dimensions and weight, and insufficient service life of the construction part. The technical effect of using the proposed technical solution can be expressed in reducing the area occupied by the substation; improving reliability and safety in operation; increasing the degree of readiness of the substation for inclusion, reducing the size and weight and increasing the life of the building part.

The specified technical effect is achieved as follows. The small-sized transformer substation contains a housing made of concrete, a power transformer, a high-voltage medium voltage switchgear, a low-voltage switchboard, and an auxiliary power supply box.

A small-sized transformer substation can be additionally equipped with an automatic transfer switch (.ABP) on the low voltage side for implementing a two-transformer substation circuit, a low voltage switchboard made on fuses or a low voltage switchboard made on circuit breakers. In addition, the small-sized transformer substation may additionally contain partitions located inside the case with the formation of three compartments, on average of which a power transformer is located, and in the extremes there is a medium voltage switchgear with auxiliary supply box, and a low voltage switchboard, respectively.

The total area of the substation is 8 sq.m. The first compartment is equipped with an oil or dry power transformer, power from 100 to 630 kV "A. In the second compartment there is a medium-voltage high-voltage switchgear and auxiliary supply box, and in the third compartment there is a low-voltage switchboard on fuses (or on circuit breakers). In the third compartment of the substation, an additional automatic transfer switch unit (ATS) can also be placed on the low voltage side (for implementing a two-transformer substation circuit). In addition, the substation is equipped with volumetric pits, in which respectively cable lines for supplying high voltage power and outgoing lines at the input and output are located, the switching lines of which have a gas-insulated sheath. The housing of a small-sized substation may have an external shell of brick.

Thanks to the presented set of essential features, the fail-safe operation of the substation is achieved for at least 25 years without the need for any maintenance and repair. Substation

turnkey produced in the factory, therefore, with a high

installation quality. The finished substation is taken to the site and requires only

connecting external cables, which takes no more than a week. Thanks

the use of gas-insulated (SF6) switching devices is provided

absolute safety and high reliability of the substation when it

operation. Small dimensions and weight allow transporting substations by anyone

mode of transport. In addition, the proposed device provides

the ability to implement any circuit solutions for substations with a capacity of

YOUOBZOKVA,

The proposed technical solution is illustrated by the following drawings.

In FIG. 1 presents a basic single-line diagram of a small-sized

substations.

In FIG. 2 shows a layout diagram of small-sized equipment

substations, three compartments.

Small-sized substation contains a housing 1 made of concrete,

the inner area of which is divided into three compartments by concrete partitions.

The first compartment is equipped with a power transformer 2. In the second compartment

medium voltage switchgear placed

voltage 3 and power supply box 4. In the third compartment is located

low voltage shield 5, made on fuses (or

circuit breakers).

In the third compartment, an automatic block can also be placed

switching on the reserve (ATS) on the low voltage side 6 (for implementation

schemes of two-transformer substation).

Jumper between transformer 2 and high voltage distribution

medium voltage device 3 is made of three single-core

pre-terminated cables with dry insulation (in FIG. 2 not

shown). Connection, sealing and restriction technology

Surge protection is based on adapters and heat-shrinkable sleeves.

Thanks to the preliminary cutting of high voltage cables, time

Substation connection is reduced to one day.

Using the proposed technical solution allows you to realize a number of significant advantages over similar designs, known today, namely;

reduction in the area occupied by the substation;

high reliability and absolute safety in operation;

high degree of readiness of the substation for inclusion;

small dimensions and weight allow transporting substations of any kind

transport;

the ability to implement any circuit solutions of substations with capacity

from 100 to SOOkVA;

new substations are distinguished by architectural expressiveness,

a variety of finishes and color schemes.

Claims (5)

1. A small-sized transformer substation containing a housing made of concrete, a power transformer, a medium voltage switchgear, a low voltage switchboard, and an auxiliary power supply box. 2. The small-sized transformer substation according to claim 1, characterized in that it is additionally equipped with a power reserve block (ATS) on the low voltage side for implementing a two-transformer substation circuit. 3. The small-sized transformer substation according to claim 1, characterized in that it further comprises a low voltage switchboard made on fuses. 4. The small-sized transformer substation according to claim 1, characterized in that it further comprises a low voltage switchboard made on circuit breakers. 5. Small-sized transformer substation according to claim 1, characterized in that it further comprises partitions located inside the housing with the formation of three compartments, on average of which a power transformer is located, and in the extremes there is a medium voltage switchgear with auxiliary supply box, and low voltage shield, respectively.