RU61473U1 - DOUBLE TRANSFORMER SUBSTATION COMPLETE - Google Patents

Abstract

The utility model is aimed at creating a small-sized substation of a two-transformer complete simplified design, reducing its metal consumption and labor intensity, increasing security during its installation, commissioning and operation. The specified technical result is achieved by the fact that the two-transformer complete substation consists of a high voltage unit, comprising several sections, each of which has load switches installed on the partition between the sections and the transformer block, a drive of the high voltage load switch and an integrated door located on the front side of this section of the same unit, the high voltage load breakers are connected to the other elements with high voltage buses, and in the transfer There are two power transformers separated by a partition and having removable hatches on the roof above them, the transformer unit is connected to the left and right doors, the power transformers are connected by high voltage buses with sections of the high voltage unit and low voltage buses with the low voltage unit, including low voltage switching equipment voltage located on the partition between the transformer block and the low voltage block. In the high voltage unit, the load switch drive is installed in a separate cabinet isolated from high voltage, the drive is controlled without opening the door to the high voltage unit. Outgoing line circuit breakers are located in the low voltage unit, the contacts of which are closed by a casing. 1 s.p. f-ly, 2 z.p. f-ly, 3 ill.

Description

The utility model relates to objects of the electrical industry, namely, devices for power supply of industrial (oil, gas industry), urban, township, agricultural and other facilities.

Known complete transformer substation indoor installation (Electrical reference book. Under the general editorship of the professor of the Moscow Power Engineering Institute Gerasimov VG and coauthors, in 3 volumes, volume 2 "Electrical devices", edition 6, -M., Energoizdat, 1981, pp. .534-539, Fig. 25-29).

Also known is a complete transformer substation made in accordance with TU 16-674.029-84 {IBDSH, 674822.018TU} (Annual industry catalogs:

"Electrical Engineering" 06/03/23-95, M., Informelectro, 1995 {105037, M.E.-37 Informelectro}.

The design of these complete transformer substations includes a device on the high voltage side, a power transformer, current leads, a metering cabinet with metering devices, a switchgear on the low voltage side, including input, sectional and linear cabinets installed to each other in a common panel, forming a common facade and back side. The cabinets consist of cells located one above the other in the height of the cabinet, in which switching and protective devices are installed on the sliding carriages, and the busbars are mounted on the back of the switchboard. The carriages on the back are equipped with cutting contacts for switching on and off switching and protective devices and other devices located on the carriage.

Known transformer substation complete reception, conversion and distribution of electrical energy (Dvoskin DI "Layout and design of switchgear high voltage", M., SEI, 1960, pp. 360-369, Fig. 4-83, 4-84, 4-85), containing an input device from the high voltage side, including input and linear panels with instrumentation, control devices, busbars.

This design of a low voltage switchgear is cumbersome, complex, metal consuming and time consuming. To carry out repairs, you must first remove the carriage from the cell with the devices and devices installed on it and then remove it all down. While the weight of the carriage with devices is about 50 kg, one electrician cannot manually remove this carriage with devices. Moreover, if the carriage is located at the very top of the cabinet - at a height of 2 meters, even together to remove such a weight from a height of 1.5-2.0 meters is quite laborious. Installing the carriage in the cell is also a time-consuming operation, and in order to determine that the cut-in contact of the carriage is reliably engaged with the contact lips of the outgoing lines, it is necessary to visually verify this from the back of the low voltage switchgear. If the contacts are not aligned or are skewed due to the gap between the frames and the guides, the carriage is again rolled out, shifted to one side or the other and rolled again, also visually monitoring the reliability of the contact of the device connection. Moreover, if the cell in which the carriage is installed is located at the very top, then for visual control of the reliability of the contact, you must go from the back with the ladder. With poor contact, the contacts burn out and quickly fail, which reduces the durability and reliability of the work. A large number of parts, rubbing surfaces in the kinematics of carriages makes the design metal-intensive, time-consuming and not sufficiently reliable.

The objective of this utility model is to create a small-sized substation of a two-transformer complete simplified design, reduce its metal consumption and labor intensity, increase safety during its installation, commissioning and operation.

This is achieved by the fact that the two-transformer complete substation consists of a high voltage unit, comprising several sections, each of which has load switches installed on the partition between the sections and the transformer block, the drive of the high voltage load switch and the built-in door located on the front side of this section of the same of the unit, the high voltage load breakers are connected to the other elements with high voltage buses, and in the transformer unit having swarm doors on the left and right,

two power transformers are located, separated by a partition and having removable hatches on the roof above them, power transformers are connected by high voltage buses to sections of the high voltage unit and low voltage buses to the low voltage unit, including low voltage switching equipment located on the partition between the transformer unit and the low unit voltage.

In the high voltage unit, the load switch drive is installed in a separate cabinet isolated from high voltage, the drive is controlled without opening the door to the high voltage unit.

Outgoing line circuit breakers are located in the low voltage unit, the contacts of which are closed by a casing.

The utility model is illustrated in the drawing, where Fig. 1 shows a two-transformer complete substation (top view) .; figure 2 - drive circuit breaker installed in a separate cabinet; figure 3 - circuit breaker, the contacts of which are closed by a casing.

Two-transformer substation complete in the drawing: high voltage unit 1; section 2 of the high voltage unit 1; drives of the high voltage load switch 3; integrated doors 4 sections 2 high voltage units 1; section with high voltage tires 5; partitions 6 between sections 2 of the high voltage unit 1 and the transformer unit 7; high voltage load switches 8; doors 9 in the transformer block 7; two power transformers 10 separated by a partition 11; high voltage bus 12; low voltage bus 13; low voltage switching equipment 14 located on the partition 15 between the transformer unit 7 and the low voltage unit 16; an integrated door 17 on the front side of the low voltage unit 16; metal case 18 of the two-transformer complete substation; levers - 19; switch - 20; casing - 21.

Two-transformer complete substation is made for receiving, converting and distributing electric energy of three-phase current, with a frequency of 50 Hz and a rated voltage of 6-10 / 0.4 kV, has a power range of 250-1600 kVA (transformer power 250-1600 kVA), with the number of outgoing lines up to 6-8,

with any combinations (cable, air connection) of input-output lines. Substations are made of kiosk type, dead end and walk-through. The substation has small dimensions. The substation has small dimensions. It has two-way access, through the built-in doors 9 in the transformer unit 7 to two power transformers 10 and single-sided access, through the built-in doors 4, 17 to the blocks of high 1 and low voltage 16.

Two-transformer complete substation has the following advantages: a) reduced metal consumption; b) low cost and laboriousness - it is delivered fully assembled (the mechanical strength of the substation ensures its transportation without any permanent deformations and damages that impede its normal operation), can be mounted in 1-2 days, allows the use of separate assembly units for repair and modernization of the substation; c) simplified design; d) compact, as it has small dimensions; d) increased reliability in operation; e) complies with modern environmental requirements.

Claims (3)

1. Two-transformer complete substation containing high voltage, transformer, low voltage blocks, characterized in that the substation consists of a high voltage block, comprising several sections, each of which has load switches installed on the partition between the sections and the transformer block, a switch drive high voltage loads and a built-in door located on the front side of this section of the same unit, high voltage load switches with other elements of high voltage busbars, and in the transformer block having doors built-in on the left and right, there are two power transformers separated by a partition and having removable hatches on the roof above them, power transformers are connected by high voltage buses to sections of the high voltage block and low voltage buses with a low voltage unit, including low voltage switching equipment located on the partition between the transformer unit and the low voltage unit. 2. The substation according to claim 1, characterized in that in the high voltage unit, the load switch drive is installed in a separate cabinet isolated from high voltage, the drive is controlled without opening the door to the high voltage unit. 3. The substation according to claim 1, characterized in that the outgoing line circuit breakers, the contacts of which are closed by a casing, are located in the low voltage unit.