CN201550027U

CN201550027U - Transformer voltage increasing and decreasing system

Info

Publication number: CN201550027U
Application number: CN2009202581047U
Authority: CN
Inventors: 晋建平; 李虎增; 饶红彬; 张文华; 李东齐
Original assignee: Lingbao Jinyuan Mining Co Ltd
Current assignee: Lingbao Jinyuan Mining Co Ltd
Priority date: 2009-11-13
Filing date: 2009-11-13
Publication date: 2010-08-11
Anticipated expiration: 2019-11-13

Abstract

The utility model relates to a transformer voltage increasing and decreasing system, which comprises a first transformer, a second transformer and third transformers, wherein the first transformer is used to decrease voltage to 400V from 10KV, the second transformer is used to increase voltage to 1000V from 400V and the third transformers are used to decrease voltage to 400V from 1000V. The primary winding of the first transformer is connected with a 10KV power supply, the secondary winding of the first transformer is connected with the primary winding of the second transformer, the secondary winding of the second transformer is connected with the primary windings of the third transformers and the secondary windings of the third transformers are used to supply power to power consumption devices. The first transformer is used first to decrease 10KV high voltage to 400V low voltage, then the second transformer is used to increase 400V voltage to 1000V voltage and finally the third transformers are used to decrease 1000V voltage to 400V voltage to supply power to the power consumption devices. The voltage attenuation on the lines between the second transformer and the third transformers does not directly affect the power consumption devices on working faces, the power supply quality is ensured and the situation that the power consumption devices cannot work normally because of the voltage attenuation is avoided.

Description

A kind of transformer buck system

Technical field

The utility model relates to the distribution field, relates in particular to a kind of transformer buck system.

Background technology

At present in bargh's roadway owing to be subjected to the low-voltage power supply radius limit, often adopt the 10KV high voltage supply, when the tunnel working face is unstable, adopt the 10KV high voltage supply system, investment is big, coefficient of safety is lower.And when adopting the 0.4KV power supply, in order to guarantee power supply quality, has only the line of increasing footpath, reduce the loss of voltage, solve tunnel scope of operation powerup issue, after the supply line of employing 0.4KV surpasses about 1000 meters, line terminal voltage drop amplitude is bigger, electric equipment can't normally move, and failure rate is higher, has seriously restricted normally carrying out of exploration work.

The utility model content

The purpose of this utility model provides a kind of transformer buck system, solves in the low and present depressurizing system of 10KV high voltage supply system coefficient of safety and only adopts the big problem of 0.4KV low-voltage supply line end voltage pressure drop amplitude.

A kind of transformer buck system, wherein: comprise that first transformer, 400V that 10KV is depressured to 400V boost to second transformer of 1000V and the 3rd transformer that 1000V is depressured to 400V, wherein, the elementary winding of first transformer is used to connect the 10KV power supply, first Secondary winding of transformer connects the elementary winding of second transformer, second Secondary winding of transformer connects the elementary winding of the 3rd transformer, and the 3rd Secondary winding of transformer is used to the power supply unit power supply.

Described transformer buck system, wherein: this transformer buck system comprises the 3rd transformer more than two and two.

Described transformer buck system, wherein: described second transformer is the stepping output transformer, its output voltage comprises 950V, 1000V, 1050V third gear.

The utility model adopts technique scheme will reach following technique effect:

Transformer buck of the present utility model system, can be with second, the 3rd transformer is separately positioned on drive mesolow switchgear house, on the electricity consumption scope of operation, the low-voltage distribution chamber, distance is far away between the electricity consumption scope of operation, earlier the 10KV high pressure drop is pressed into 400V low pressure by first transformer, again by second transformer with the 400V boost in voltage to 1000V, by the 3rd transformer 1000V being depressured to 400V at last powers to power consumption equipment, second, pressure drop decay in the middle of the 3rd transformer on the circuit will can directly not have influence on the power consumption equipment on the scope of operation, guaranteed power supply quality, the problem of having avoided the voltage attenuation on the transmission line to cause power consumption equipment normally to move.

Description of drawings

Fig. 1 is the structural principle schematic diagram of the utility model transformer buck system.

Embodiment

A kind of transformer buck system, as shown in Figure 1,: comprise that 10KV is depressured to the first transformer T1 of 400V, 400V boosts to 950,1000 or the second transformer T2 and five the 3rd transformer T31 of 1050V third gear output, T32, T33, T34, T35, wherein, the 3rd transformer T31 is arranged on the nearer working face of the second transformer T2, it is the transformer that 950V is depressured to 400V, the 3rd transformer T32, T33 is arranged on second transformer T2 working face far away, it is the transformer that 1000V is depressured to 400V, the 3rd transformer T34, T35 is arranged on the farther working face of the second transformer T2, is the transformer that 1050V is depressured to 400V; The elementary winding of the first transformer T1 is used to connect the 10KV high voltage source, the secondary winding of the first transformer T1 connects the elementary winding of the second transformer T2, the 950V output of the secondary winding of the second transformer T2 connects the elementary winding of the 3rd transformer T31, the 1000V output of the secondary winding of the second transformer T2 connects the 3rd transformer T32, the elementary winding of T33, the 1050V output of the secondary winding of the second transformer T2 connects the 3rd transformer T34, the elementary winding of T35, the 3rd transformer T31, T32, T33, T34, the secondary winding of T35 is used to the power supply unit power supply on the corresponding scope of operation.

Earlier the 10KV high pressure drop is pressed into 400V low pressure by the first transformer T1, again by the second transformer T2 with 400V boost in voltage to 950,1000,1050V, at last by the 3rd transformer T31, T32, T33, T34, T35 is corresponding to 950,1000,1050V voltage is depressured to 400V respectively power consumption equipment is powered, the second transformer T2 and the 3rd transformer T31, T32, T33, T34, pressure drop decay in the middle of the T35 on the circuit will can directly not have influence on the power consumption equipment on the scope of operation, guaranteed power supply quality, the problem of having avoided the voltage attenuation on the transmission line to cause power consumption equipment normally to move.

Claims

1. transformer buck system, it is characterized in that: comprise that first transformer, 400V that 10KV is depressured to 400V boost to second transformer of 1000V and the 3rd transformer that 1000V is depressured to 400V, wherein, the elementary winding of first transformer is used to connect the 10KV power supply, first Secondary winding of transformer connects the elementary winding of second transformer, second Secondary winding of transformer connects the elementary winding of the 3rd transformer, and the 3rd Secondary winding of transformer is used to the power supply unit power supply.

2. transformer buck as claimed in claim 1 system, it is characterized in that: this transformer buck system comprises the 3rd transformer more than two and two.

3. transformer buck as claimed in claim 1 or 2 system, it is characterized in that: described second transformer is the stepping output transformer, its output voltage comprises 950V, 1000V, 1050V third gear.