CN201667498U - Open-pit mine box-type substation - Google Patents

Abstract

The utility model relates to a box-type substation for open-pit mines, which comprises a base, a transformer arranged on the base, a high-voltage chamber and a low-voltage chamber. The chamber is located on the high-voltage side of the transformer, and the low-voltage chamber is located on the low-voltage side of the transformer. The utility model integrates the transformer and the high-voltage and low-voltage chambers on one base, which truly realizes the construction of the substation as a factory, and at the same time makes the on-site foundation construction simple, shortens the design and manufacture cycle of the substation, and solves the problem of difficulty in site construction of the existing fixed substation. High cost and other issues; the base of the substation adopts a skid structure, which can be dragged by a large trailer at any time according to the location of power consumption, which is very convenient to move; the transformer is placed in the open air to facilitate heat dissipation, ensuring reliable and continuous operation of electrical equipment .

Description

Open-pit mine box-type substation

technical field

The utility model relates to a box type substation.

Background technique

Box-type substation is a kind of power distribution equipment that organically assembles high-voltage switchgear, distribution transformer and low-voltage power distribution device in a box according to a certain wiring scheme. Box-type substation is suitable for mines, factories, enterprises, oil and gas fields and wind power stations. It replaces the original civil engineering power distribution room and power distribution station, and becomes a new type of complete power transformation and distribution equipment.

The structure and configuration of various types of box-type substations are determined by the environment in which they are used. Although there are certain differences in their structures and configurations, the frame structures of most box-type substations are basically the same, that is, in a In the closed box, the internal space is divided into relatively independent high-voltage room, transformer room and low-voltage room in turn on the plane. The high-voltage room is equipped with a high-voltage switchgear, the transformer room is equipped with a transformer, and the low-voltage room is equipped with a low-voltage distribution cabinet. The low-voltage and low-voltage sides are respectively connected to the high-voltage switchgear and the low-voltage power distribution cabinet. Since the transformer of this type of box-type substation is arranged in the box, the heat generated during work is not easy to dissipate.

The box-type substation for open-pit mining is a substation used in open-pit mining. Due to the harsh environment of domestic open-pit mining, strong wind and sand, and low temperature, the box-type substation for domestic open-pit mining is still an old-fashioned fixed structure. The structural substation has disadvantages such as difficult construction, long period, high cost, and inconvenient movement. Under the premise of improving labor productivity and reducing mining costs in open-pit mining, the existing box-type substation structure for open-pit mining needs to be improved urgently.

Contents of the invention

The purpose of the utility model is to provide a box-type substation for open-pit mines with good heat dissipation performance, which can realize factory prefabrication and is easy to move.

In order to achieve the above purpose, the utility model adopts the following technical scheme: open-pit mine box-type substation, including a base and a transformer, a high-voltage chamber and a low-voltage chamber arranged on the base, the base is a skid-type base, and the transformer is placed in the open air In the middle part of the base, the high-voltage chamber is located on the high-voltage side of the transformer, and the low-voltage chamber is located on the low-voltage side of the transformer.

The high-voltage chamber is divided into a station transformer compartment and a high-voltage switch compartment.

The low-voltage chamber is provided with an operation corridor extending from the transformer end to the end of the base far away from the transformer. The two sides of the operation corridor are oppositely provided with an AC and DC power supply screen and a main transformer protection screen at the end far away from the transformer, and oppositely provided with a protection screen at the end close to the transformer. Low-voltage incoming line interval and low-voltage outgoing line interval.

A closed bus bridge is arranged above the transformer.

A hoisting structure is provided on the base.

The utility model integrates the transformer and the high-voltage and low-voltage chambers on one base, which truly realizes the factory construction of the substation, and at the same time makes the on-site foundation construction simple, shortens the design and manufacture cycle of the substation, and solves the problem of difficulty in site construction of the existing fixed substation. High cost and other issues; the base of this substation adopts a skid-type structure, which can be dragged by a large trailer at any time according to the location of power consumption, which is very convenient to move; the transformer is placed in the open air to facilitate heat dissipation, ensuring reliable and continuous operation of electrical equipment .

The high-voltage room partition of the utility model is set as a station transformer interval and a high-voltage switch interval, which is convenient for the overhead line to be introduced into the station transformer interval from the top of the substation; the low-voltage chamber adopts a corridor structure, and the low-voltage incoming line interval and the low-voltage outgoing line interval are relatively arranged on both sides of the corridor , which not only facilitates the connection inside the substation, but also provides convenience for the wiring from the side of the substation, and the overall wiring is more neat and reasonable.

Description of drawings

Fig. 1 is a structural schematic diagram of the utility model box-type substation;

Fig. 2 is a schematic diagram of the plane layout of the substation in Fig. 1;

Fig. 3 is the main wiring diagram of the utility model.

Detailed ways

The open-pit mine box-type substation shown in Figure 1-3 mainly includes 35kV high-voltage switch, 35kV transformer and 6kV low-voltage switch, protection device, AC and DC operating power supply, environmental control system, PLC wireless data remote transmission system and box shell and other functional components. It generally includes a base 4 and a transformer 3 arranged on the base, a high-voltage chamber 1 and a low-voltage chamber 2. The base 4 adopts a skid-type base, and a hoisting structure is also provided on the base; the transformer 3 is placed in the middle of the base in the open air. The high-voltage chamber 1 is located on the high-voltage side of the transformer, the low-voltage chamber 2 is located on the low-voltage side of the transformer, and a closed bus bridge 8 is arranged above the transformer; the transformer 3 is connected to the high-voltage chamber with a high-voltage cable, and between the transformer 3 and the low-voltage chamber. Copper busbar connection, high-voltage cables and copper busbars are arranged in the busbar bridge 8; the heat sink of the transformer 3 is installed on the side of the transformer, and a special guardrail is set around the heat sink, so the ventilation is good and the safety is high. Among Fig. 1, 6 is column, and 7 is door panel.

The above-mentioned high-voltage chamber 1 is divided into a station transformer compartment A and a high-voltage switch compartment B, and the station transformer compartment A is provided with an isolating switch, a fuse, a station transformer and an overvoltage protector; the high-voltage switch compartment B is provided with a vacuum circuit breaker, Current transformers, fuses, voltage transformers and circuit breakers.

The above-mentioned low-voltage chamber 2 is provided with an operation corridor 9 extending from the transformer end to the end of the base far away from the transformer. The two sides of the operation corridor 9 are oppositely provided with an AC and DC power supply screen F and a main transformer protection screen E at the end far away from the transformer. A low-voltage incoming line interval C and a low-voltage outgoing line interval D are opposite to one end of the two. In the interval C of the low-voltage incoming line, there are isolation switches, circuit breakers, current transformers, fuses, voltage transformers, and overvoltage protectors; in the interval D of low-voltage outgoing lines, there are isolation switches, circuit breakers, current transformers, and overvoltage protection. Devices, zero-sequence current transformers; the equipment in the low-voltage incoming line interval C and the low-voltage outgoing line interval D are installed vertically, corresponding to each other. The AC and DC power supply screen F is equipped with an AC and DC power supply and a battery, and the main transformer protection screen E is equipped with a main transformer protection unit, and the screens are interconnected through a communication network. There is also a special cable trough on the base 4, through which the secondary cables in the box are connected to the screen body, which not only reduces the field wiring work, but also avoids the trouble of the secondary cables going through the cable trough, which is convenient and beautiful.

When connecting the lines, the external power supply is introduced from the top of the station transformer bay A through the overhead line; the station transformer bay A and the high-voltage switch bay B, the high-voltage switch bay B and the transformer 3 are connected by high-voltage cables; the transformer 3 and the low-voltage incoming line Copper busbars are used to connect the incoming line compartment C and the low-voltage outgoing line compartment D; the low-voltage outgoing line compartment D is connected to the outside world through cables and side outlets. This wiring method is convenient for wiring and simple for foundation construction.

In addition, the high-voltage room and low-voltage room of the box-type substation are equipped with five-proof program locks. Through the reasonable design of the opening sequence of the program locks, each device is interlocked with each other to achieve the five-proof requirements; the primary equipment uses high-pollution level equipment to ensure Meet the reliable operation of the equipment in the environment with strong wind and sand and low temperature.

In this embodiment, all external doors and side panels adopt a double-layer structure, the outer layer is a double-layer steel plate, and the interior is filled with thermal insulation materials. The door panel 7 and the column 6 are connected by a high-strength stainless steel cross concealed hinge; Wall mounted dual temperature air conditioner.

Claims (5)

1. Box-type substation for open-pit mines, including a base and a transformer, a high-voltage room and a low-voltage room arranged on the base, characterized in that: the base is a skid-type base, and the transformer is placed in the middle of the base in the open air. The chamber is located on the high-voltage side of the transformer, and the low-voltage chamber is located on the low-voltage side of the transformer. 2. The open-pit mine box-type substation according to claim 1, characterized in that: the high-voltage chamber is divided into a substation compartment and a high-voltage switch compartment. 3. The open-pit mine box-type substation according to claim 1 or 2, characterized in that: the low-voltage chamber is provided with an operation corridor extending from the transformer end to the end of the base far away from the transformer, and the two sides of the operation corridor are on the side far away from the transformer. One end is oppositely provided with an AC/DC power supply screen and a main transformer protection screen, and one end close to the transformer is oppositely provided with a low-voltage incoming line interval and a low-voltage outgoing line interval. 4. The open-pit mine box-type substation according to claim 3, characterized in that: a closed busbar bridge is arranged above the transformer. 5. The open-pit mine box-type substation according to claim 4, characterized in that: the base is provided with a hoisting structure.

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