RU65303U1 - STATIONARY TRANSFORMER SUBSTATION - Google Patents

Abstract

The utility model relates to electrical engineering, in particular, to the conversion and distribution of electrical energy and can find application in the construction of stationary transformer substations placed on trailers or semi-trailers. Stationary transformer substation contains at least one complete gas-insulated device (1) and one gas-insulated switchgear (6), at least one gas-insulated power transformer (2), interconnected by cables and / or gas-insulated conductors (4), which in their the turn can be connected to single-phase or three-phase gas-insulated busbars (3), and the gas-insulated power transformer (2) can have a plug-in input of the secondary winding and a plug-in neutral input for cable connection; The gas-insulated neutral grounding section with surge suppressor (SPD) has a plug connector for cable connection.

Description

The utility model relates to electrical engineering, in particular, to the conversion and distribution of electrical energy and can find application in the construction of stationary transformer substations placed on trailers or semi-trailers.

The closest in technical essence and taken as a prototype is a stationary transformer substation containing at least one gas-insulated switchgear and one switchgear and one power transformer, interconnected by cables and / or conductors, which in turn are connected to single-phase or three-phase Siemens busbars (http://www.siemens.com)

However, such substations have the following disadvantages:

- the presence of open conductive parts and elements under voltage;

- the use of fire-hazardous and environmentally hazardous oil transformers that require a tank for emergency oil drainage, which makes it impossible to place these substations near infrastructure and residential buildings,

- integration into industrial facilities of such substations mounted in containers on foundations requires sophisticated rigging equipment to perform installation work during commissioning and repair.

The objective of the utility model is to create a safe transformer substation, which can be located near infrastructure and residential buildings or built into industrial facilities.

To do this, at least one complete gas-insulated device (GIS) and a 10 kV gas-insulated switchgear, at least one gas-insulated power transformer, interconnected by cables and / or gas-insulated conductors, which in turn can be connected to single-phase, are used in a stationary transformer substation. or three-phase gas-insulated busbars, and the gas-insulated power transformer can have a plug input of the secondary winding and a plug input of neutral for cable connection. The gas-insulated neutral grounding section with surge suppressor (SPD) has a plug connector for cable connection.

Stationary transformer substation can be placed on trailers or

semi-trailers with high ground clearance.

The utility model is illustrated in Figure 1 by a stationary transformer substation, where 1 is a switchgear, 2 is a gas-insulated power transformer, 3 is a gas-insulated busbar, 4 is a gas-insulated bus duct, 5 is a 110 kV cable connection, 6 is a 10 kV gas distribution device, 7 is a cable connection 10 kV, 8 - cable connections of consumers.

A stationary transformer substation 110/10 (6) kV with a capacity of up to 160 MVA works as follows: the voltage from the line is supplied to the cable glands of the switchgear (1) 110 kV and distributed to two busbars (3), to which four switchgears (1) are connected via SF6 gas conductor (4) for further power distribution; The gas-insulated power transformer (2) is connected to the switchgear (1) through a cable connection (5). Power transformers (2) convert a high voltage (110-220 kV) into a voltage of 6-10 kV of a 10 kV gas-insulated switchgear, which is connected to the secondary winding of a gas-insulated power transformer by means of a cable connection (7). From a 10 kV gas-insulated switchgear, power is distributed to consumers through cable connections (8).

Such stationary transformer substations can be used for the distribution and conversion of electricity near infrastructure and residential buildings, can be compactly integrated into industrial premises and placed underground, occupying a minimum area, provide fireproof and environmentally friendly conversion and distribution of electricity. Placing such substations on trailers and semi-trailers with a high ground clearance allows transporting stationary transformer substations on rough roads, and the use of plug connectors and cable connections can reduce installation time and ensure quick replacement of faulty equipment, as well as eliminate the presence of open conductive parts and elements, energized.

Claims (2)

1. Stationary transformer substation containing at least one complete switchgear and one switchgear and one power transformer interconnected by cables and / or conductors, which in turn are connected to single-phase or three-phase busbars, characterized in that all of the above switchgears and a power transformer are made with an insulating medium in the form of SF6 gas, the bus duct and busbars are gas-insulated, and the power transformer has a teker input of the secondary winding and plug-in neutral input for cable connection. 2. Stationary transformer substation according to claim 1, characterized in that the stationary transformer substation is placed on trailers or semi-trailers with high ground clearance.