RU15239U1 - OUTDOOR TRANSFORMER SUBSTATION - Google Patents

Description

TRANSFORMER NODSTANTSA OUTDOOR INSTALLATION

The utility model relates to electrical engineering, in particular, to the production, conversion and distribution of electrical energy, and can find application in the design of transformer substations of an outdoor installation.

A medium voltage switchgear for an outdoor transformer substation is known, comprising a line - transformer cell, including connecting a line with a load switch, an earthing knife, and connecting a transformer with a disconnector, an earthing knife and fuses, busbars, a frame with frames and enclosing panels, a second cell a line including a circuit breaker and a disconnector with a grounding knife, while the circuit breaker is placed in a separate cell attached to the cell e of the first line at the level of the load switch, and the disconnector of the cell of the second line is located in the cell of the first line in the mirror with respect to the load switch of the first line L.

The described switchgear, characterized by convenience when connecting overhead lines, has a design complexity due to the presence of two cells, as well as limited functionality due to the inability to connect cable lines.

The utility model solves the problem of creating a transformer substation for an outdoor installation, characterized by the simplicity of conMPCN02V5 / 00

structure, ease of use and wide functionality.

To solve the problem in an outdoor transformer substation, contain1; switchgear cell line - transformer in which it is placed; first load switch, line connection with load switch, grounding and transformer connection, grounding and fuses, busbars, frame and guard , it is proposed, according to this utility model, to introduce a roof connected to the frame by means of a threaded connection, while in the cell opposite to the first load switch and, a second load switch is installed, identical to the first, and electrically connected to it by means of connecting buses.

The utility model is illustrated by the example of the drawings, which schematically depict the inventive transformer substation of an outdoor installation: in FIG. 1 is a front view of a transformer substation, FIG. 2 is a side view (left) of the substation, in FIG. 3 is a view A of FIG. 1..

Transformer substation contains a switchgear 1.

Switchgear - cell 1 contains the first load switch 2, as well as connecting 3 lines with a load switch 3, grounding 4 and connecting 5 transformer 6, grounding 7, fuses 8, busbars 9, frame 10, fencing 11.

The roof 12 is connected to the frame 10 of the transformer substation 13 using a threaded connection 14 (see Fig. 3).

in cell 1, opposite to the first load switch 3, a second load switch 15 is installed, identical to the first switch of load 2, and electrically connected to it by means of connecting buses 9.

Transformer substation works as follows.

Two operating modes of the substation are possible: in the substation mode with backup power supply and in the through substation mode.

In the first case, the first switch of the load 2 is in the on position, and the second switch of the load 15 is in the off position. High voltage comes from different sources to the lower contacts of the first 2 and second 15 load switches, respectively. Further, from the upper contacts of the load switch 2 through the fuses 8 and the ground electrode 7 by connecting 5, high voltage is supplied to the high-voltage contacts of the transformer 6 and then the lower voltage is supplied to the consumer. If necessary, the first switch 2 disconnect the first line, and connect the second switch 15 to the second line. From the upper contacts of the second switch of the load 15 through the connecting busbars 9, high voltage is supplied to the upper contacts of the first switch 2 and further, through the fuses 8 and the ground electrode 7 by connecting 5, the high voltage is supplied to the high-voltage contacts of the transformer 6 and then the reduced voltage is supplied to the consumer.

Easily removable, fixed by means of a threaded connection, the roof allows the transformer to be replaced and installed using lifting equipment in limited space conditions.

In the second case, both switches are in the on position. High voltage is applied to the lower pins first

th load switch 2. From the upper contacts of the nerve switch 2 by means of connecting buses 9, high voltage is supplied to the upper contacts of the second load switch 15 and then transferred to the next consumer. At the same time, the high voltage from the upper contacts of the first switch 2 through the fuses 8 and the ground electrode 7 through connection 5 is supplied to the high-voltage contacts of the transformer 6 and then the reduced voltage is supplied to the consumer.

In accordance with the proposed decision, ALSTOM Sverdlovsk Electromechanical Plant developed technical documentation for an outdoor transformer substation, which passed the necessary tests. Positive test results of the substation testify to its operability and the possibility of wide practical application in the future.

Literature:

1. Auth. testimonial. USSR No. 1690046, IPC Н02 В 5/00, 1991

Claims (1)

An outdoor transformer substation containing a switchgear - a line-transformer cell in which the first load switch is located, a line connection with a load switch, an earthing switch and a transformer connection with a disconnector, an earthing switch and fuses, busbars, a frame and a fence, characterized in that it contains a roof connected to the frame using a threaded connection, while a second load switch is installed in the cell opposite to the first load switch ki, identical to the first, and electrically connected to it by means of connecting buses.