RU171598U1 - SINGLE TRANSFORMER SUBSTATION COMPLETE - Google Patents

Abstract

The utility model relates to the field of electrical engineering, namely to high-voltage substations designed to distribute the current of industrial voltage to electricity consumers. The objective of creating a utility model that matches the technical result is the achieved technical results - increasing the functionality of the substation and reducing its size. in a substation of a single-transformer complete unit containing an external case in which a high-voltage compartment is made I have a load switch, a transformer compartment with a power transformer and a low voltage compartment with switching equipment, in that it contains a diesel connection box, the low voltage compartment contains an input unit on which a three-position switch is installed. Mechanical interlocks connecting the input switching device can be made and outgoing lines in the low voltage compartment. A single-transformer complete substation may contain a repair feeder on the external case of the substation. notransformatornaya may comprise a complete energy self distributor nuzhdy.Podstantsiya complete one-transformer may include a feeder street osvescheniya.Podstantsiya complete one-transformer may comprise izmereniya.Podstantsiya complete one-transformer unit may comprise a power metering device. 6 c.p. f-ly, 6 ill.

Description

The utility model relates to the field of electrical engineering, namely to high-voltage substations designed to distribute the current of industrial voltage to consumers of electricity and is intended for uninterrupted power supply to industrial (oil, gas industry), urban, township, agricultural and other facilities.

Known transformer substation according to the patent of the Russian Federation for the invention No. 2219631, IPC H02B 5/00, published on December 20, 2003.

This block distribution transformer substation contains a high voltage input device connected to power cables, two power transformers and a low voltage switchgear. The technical result is achieved in that the input device of the higher voltage is made in the form of a distribution point, consisting of two sections. In each section, a set of cells with switching equipment and protection and grounding devices is mounted. Each section is formed from paired during installation, having a U-shaped cross-section in terms of blocks, which together form a common room of the box-shaped section with one common door. Each power transformer is mounted in a separate volume unit, made in the form of a duct with a ceiling panel, longitudinal and transverse walls made with a door. These paired blocks of sets of cells are mounted adjacent to each other and / or adjacent one of them to one volumetric block of the power transformer.

The disadvantage is limited functionality.

The closest technical solution for the totality of features to the claimed model is a single-transformer complete substation according to the patent of the Russian Federation for utility model No. 61472, IPC H02B 5/00, publ. 02/27/2007, the prototype.

This substation contains a high voltage compartment with a load switch, a power transformer compartment and a low voltage compartment with switching equipment.

Disadvantages - limited functionality (there is no backup power supply to consumers) and the relatively large dimensions of the substation due to the loose placement of components. In addition, limited access to equipment due to the presence of only one door and no door locks to ensure the safety of staff.

The task of creating a utility model is to increase functionality with smaller dimensions.

Achieved technical results - an increase in the functionality of the substation and a decrease in its dimensions.

The solution of these problems has been achieved in a substation of a single-format transformer containing an external enclosure, in which a high voltage compartment with a load switch, a transformer compartment with a power transformer and a low voltage compartment with switching equipment are made, in that it contains a diesel connection box, the low voltage compartment contains an input block on which the three-position switch is installed.

Mechanical interlocks can be made connecting the input switching device and the outgoing lines in the low voltage compartment.

A single-transformer complete substation may contain a repair feeder on the external housing of the substation.

A single-transformer complete substation may contain an energy distributor for own needs.

A single-transformer complete substation may contain a street lighting feeder.

A single-transformer complete substation may contain measuring devices.

A single-transformer complete substation may contain electricity metering devices.

The main differences between the claimed model and the analogue are the presence of a diesel connection box, a three-position switch on the input unit of the low voltage compartment and a mechanical interlock connecting the input switching device and outgoing lines in the low voltage compartment, as well as the presence of a repair feeder on the external case of the substation.

The essence of the utility model is illustrated in the drawings (Fig. 1 ... 6), where:

- in FIG. 1 is a side view of a single-transformer complete substation,

- in FIG. 2 shows a section aa,

- in FIG. 3 shows a view of the facade of the high voltage compartment,

- in FIG. 4 shows a view of the facade of the low voltage compartment,

- in FIG. 5 shows a section of the repair feeder BB,

- in FIG. 6 is a schematic diagram of the blocking of a single-transformer complete substation.

The single-transformer complete substation (Fig. 1 ... 6) consists of: a high voltage compartment 1, a transformer compartment 2, a low voltage compartment 3, an air inlet tower 4 at the top of the substation, and a low voltage crossarm 5, partially located in the low voltage compartment 3 and partially placed above it. Also outside is the connection box of the diesel generator 6, which is mounted on the door 7, then there is the transformer compartment 2. Outside there is also a repair feeder 8 for connecting portable electrical appliances (portable electrical appliances in Fig. 1 ... 6 are not shown).

In the high-voltage compartment 1, there is a switching apparatus 9 (Fig. 2), locks 10 (Fig. 3) and the actuator 11 of the switching apparatus 9. To increase the safety during operation, an additional door is installed in the high-voltage compartment 1, which blocks the personnel from live parts , providing access to the controls of the switching apparatus 9.

In the transformer compartment 2 (Fig. 2 and 3) is a power transformer 13, which is connected to the high voltage compartment 3 busbars 14, and to the low voltage compartment 3 cable (cable not shown).

The low voltage compartment 3 (Fig. 4) consists of an input unit 15, a relay unit 16 and an outgoing unit 17. The input unit 15 consists of a circuit breaker 18, a 3-position knife switch 11 and a door 19 that covers live parts from direct access. Using a 3-position knife switch 11 allows you to feed the outlet lines 20 from the power transformer 13 (Fig. 2 and 6), and from a diesel generator controlled through the connection box of the diesel generator 6 (the diesel generator in Fig. 1 ... 6 not shown).

In the relay block 16 (Fig. 4) there are measuring devices 21 and electricity metering devices 22. The following systems can also be installed: a street lighting feeder 23, an internal energy distributor 24 (Fig. 4).

In the block of outlet lines 17 (Fig. 4) are the circuit breakers 25, which are closed by a panel (not shown in the image) with a shutter lock 26 of the discharge lines 20. The shutter damper 26 is moved using the handle 27 (Fig. 4 and 6).

The substation implements a system of mechanical interlocks of direct action. As control equipment locks used keys and block locks. The following describes in detail the design of locking systems.

The design of the switching apparatus 8 (Fig. 4) provides a mechanical lock 10 (Fig. 6) and a mechanical lock 28 that does not allow the inclusion of the main knives 29 when the grounding knives 30 are turned on and the inclusion of the grounding knives 30 when the main knives 29 are turned on (Fig. 6).

The lock in the compartment of low voltage 3 (Fig. 4) is based on the kinematic connection of the shutter-lock 26 (Fig. 4) of the discharge lines 20 and the rod 31, which blocks the door 32 of the control compartment of the input switch 33 (Fig. 6).

The block-lock provides communication between the interlocking systems (Fig. 6) of the low-voltage compartment 3, the high-voltage compartment 1 and the power transformer compartment 2. The interlocking system ensures the safety of maintenance of a single-transformer complete substation. Operation of high voltage devices is possible only after turning off the low voltage devices by means of block locks 34 and 35). Access to the transformer compartment 2 is possible only after turning off the switching device 9 (Fig. 2) of the high voltage control and turning on the ground 36 of the high voltage winding 37 of the power transformer 13 (block locks 34 and 35).

Repair feeder 8 (Fig. 5) is also equipped with a lock 38, which does not allow to open the cover 39 in the presence of voltage in the connector 40 or to pull the plug out of the connector. This prevents high current switching at connector 40.

The substation is made in the housing 41 in the form of a parallelepiped (Fig. 1 and 4).

The connection box of the generator 6 (Fig. 1) allows you to connect cables with both ferrules and uncompressed cables. The connection box of the generator 6 is closed by a padlock (not shown).

Work substation.

During operation, a high voltage is supplied to the switching device 9, which is located in the high-voltage compartment 1. Next, the voltage is supplied to the power transformer 13, which is located in the transformer compartment 2 and then to the discharge lines 20 of the low-voltage compartment. Control over the work is carried out according to the testimony of the measuring device 21 and the metering device for electricity 22.

In the event of a break in the high-voltage supply wires supplying electricity to the air input tower 4, the diesel engine is started with the generator using the connection box of the diesel generator 6 (Fig. 1) and the energy consumers continue to work.

If necessary, you can use the street lighting feeder 23 and the energy distributor for your own needs 24 (Fig. 4).

The presence of interlocks provides safety measures when working with high voltage.

As a result, the claimed solution allows you to:

- with smaller overall dimensions to increase the functionality of the substation, including work when it is de-energized;

- increase the safety of the substation;

- power the substation from a diesel generator set;

- reduce the metal production.

It is also possible to replace and maintain the power transformer on both sides, without dismantling the low voltage compartment.

Claims (7)

1. The substation is a single-transformer substation, comprising an external case, in which a high voltage compartment with a load switch, a transformer compartment with a power transformer and a low voltage compartment with switching equipment, characterized in that it comprises a diesel connection box, a low voltage compartment contains an input unit, on which the three-position switch is installed. 2. The single-transformer substation complete according to claim 1, characterized in that it contains mechanical interlocks connecting the input switching device and outgoing lines in the low voltage compartment. 3. The complete single-transformer substation according to claim 1, characterized in that it contains a repair feeder on the outer case of the substation. 4. Complete single-transformer substation according to claim 1, characterized in that it contains an energy distributor for own needs. 5. The complete single-transformer substation according to claim 1, characterized in that it contains a street lighting feeder. 6. Complete single-transformer substation according to claim 1, characterized in that it contains measuring devices. 7. The complete single-transformer substation according to claim 1, characterized in that it contains electric power metering devices.

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