CN202534960U

CN202534960U - Terminal-type box-type power transformation system

Info

Publication number: CN202534960U
Application number: CN2012201364586U
Authority: CN
Inventors: 陈建华; 卫龙芳; 冯宇虹; 潘红光; 杨耀国
Original assignee: Shanghai Municipal Electric Power Co
Current assignee: Shanghai Municipal Electric Power Co
Priority date: 2012-03-31
Filing date: 2012-03-31
Publication date: 2012-11-14
Anticipated expiration: 2022-03-31

Abstract

The utility model relates to a terminal-type box-type power transformation system, including a first low-voltage busbar, a second low-voltage busbar and a high-voltage busbar and also including an isolation measuring module, a lightning arrester module, a breaker module, a transformer, a wire incoming module and a wire outgoing module. The isolation measuring module, the lightning arrester module, the breaker module, the transformer, the wire incoming module and the wire outgoing module are connected by circuits. The transformer and the wire incoming module are respectively connected with the external first low-voltage busbar. The wire incoming module and the wire outgoing module are respectively connected with the external second low-voltage busbar. The isolation measuring module, the lightning arrester module and the breaker module are respectively connected with the external high-voltage busbar. The terminal-type box-type power transformation system has the advantages of simple structure, convenient operation and maintenance, high operation efficiency, safety and reliability and pays attention to environmental protection and resource saving.

Description

A kind of terminal molding box formula power transformation system

Technical field

The utility model relates to a kind of box transformation device, particularly a kind of terminal molding box formula power transformation system.

Background technology

It is one of important indicator to power supply enterprise's examination that user side receives the reliability of distribution system; The operation conditions and the technology management level that are also reflecting simultaneously supply network; Being the crucial reference index of power grid construction and transformation, also is the important symbol of weighing State Grid's development degree.Along with development of times, the user receives distribution system to require higher reliability, and is intelligent more flexibly, operates easylier, moves more energy-conservationly, safeguards simplyr, and security performance is higher.

Shanghai Electric Power market does not have the user side distribution system scheme of unified standard at present, and the customer equipment kind is more numerous and diverse, and it is more intense that personalization requires, and market is also more and more open, and this brings difficulty for the user side distribution.And, also have stealing hidden danger because the electric equipment of amount is not independent, cause the increase of line loss rate easily.In addition, also there is certain unsafe factor in the existing mode of connection.

The utility model content

The utility model provides a kind of terminal molding box formula power transformation system, and it is simple in structure, operation maintenance is convenient, high efficiency, safe and reliable, and pays attention to environmental protection, economizes on resources.

In order to achieve the above object, the utility model is realized through following technical scheme:

A kind of terminal molding box formula power transformation system comprises: first low-voltage bus bar, second low-voltage bus bar and high voltage bus comprise also that circuit connects: isolate metering module, lightning arrester module, breaker module, transformer, inlet wire module and go out wire module; Wherein, said transformer, inlet wire module are connected with first low-voltage bus bar of outside respectively; Said inlet wire module, go out wire module and be connected with second low-voltage bus bar of outside respectively; Said isolation metering module, lightning arrester module, breaker module link to each other with set high voltage bus respectively.

Said isolation metering module comprises:

First current transformer that is connected with the high voltage bus of outside;

First isolating switch of connecting with described first current transformer;

With first electric capacity that described first isolating switch is connected, the other end ground connection of this first electric capacity;

First fuse that is connected with described high voltage bus;

First voltage transformer of connecting, and this first voltage transformer ground connection with described first fuse;

Second electric capacity that is connected with described high voltage bus, the other end ground connection of this second electric capacity.

Said lightning arrester module comprises:

Second isolating switch that is connected with described high voltage bus;

First Surge Protector of connecting, and this first Surge Protector ground connection with described second isolating switch;

Second fuse of connecting with described second isolating switch;

Second voltage transformer of connecting with described second fuse.

Said breaker module comprises:

The 3rd isolating switch that is connected with described high voltage bus;

First circuit breaker of connecting with described the 3rd isolating switch;

The 4th isolating switch of connecting, and the 4th isolating switch ground connection with described first circuit breaker;

Second current transformer of connecting with described first circuit breaker, and this second current transformer is connected with described first low-voltage bus bar;

With the 3rd electric capacity that described second current transformer is connected, the other end ground connection of the 3rd electric capacity;

Further, first circuit breaker is a vacuum circuit-breaker in the described breaker module, its electrical interlocks respectively and between described first isolating switch, the 3rd isolating switch and the 4th isolating switch.

Said transformer adopting star-delta connects: the star side of said transformer is connected the neutral ground of star side with said first low-voltage bus bar; The triangle side of said transformer links to each other with second current transformer of said breaker module.

Said transformer is a transformer hermetically sealed, oil immersed type.

Said inlet wire module is provided with the 3rd current transformer, second circuit breaker that circuit connects;

Said second circuit breaker links to each other with first low-voltage bus bar with the primary side of said the 3rd current transformer respectively;

The secondary side of said the 3rd current transformer links to each other with second low-voltage bus bar, also leads to the 3rd fuse on this connecting line, and it is connected with the second Surge Protector circuit of ground connection.

Saidly go out wire module and be provided with four identical outlet groups, each outlet group comprises the 5th isolating switch that is connected with said second low-voltage bus bar;

Each said the 5th isolating switch lower end also is connected with two the 3rd circuit breakers respectively, by the lower end outlet of these two the 3rd circuit breakers.

Said the 3rd circuit breaker is an air circuit.

The utlity model has following advantage:

1, operation maintenance is convenient, high efficiency, and construction and operating cost are low, can bring into play the advantage of scale, improve overall efficiency;

2, the utility model also have safe and reliable, advanced technology, broad covered area, emphasis environmental protection, economize on resources, than the advantage of low cost;

3, simple in structure, easy to use.

Description of drawings

Fig. 1 is the circuit theory diagrams of a kind of terminal of the utility model molding box formula power transformation system.

Embodiment

Embodiment below in conjunction with description of drawings the utility model.

As shown in Figure 1; The utility model provides a kind of terminal molding box formula power transformation system; Comprise: first low-voltage bus bar 71, second low-voltage bus bar 72 and high voltage bus 8 also comprise isolation metering module 1, lightning arrester module 2, breaker module 3, transformer 4, the inlet wire module 5 that connects through circuit and go out wire module 6; Wherein, said transformer 4, inlet wire module 5 are connected with the first set low-voltage bus bar 71 respectively; Said inlet wire module 5, go out wire module 6 and be connected with the second set low-voltage bus bar 72 respectively; Said isolation metering module 1, lightning arrester module 2, breaker module 3 link to each other with set high voltage bus 8 respectively.

As shown in Figure 1, wherein, isolate metering module 1 and comprise first current transformer 11, first isolating switch 12, first electric capacity 13, first fuse 15, first voltage transformer 16, second electric capacity 17.This first current transformer 11 is connected with high voltage bus 8; First isolating switch 12 is connected with first current transformer 11; First electric capacity 13 is connected with first isolating switch 12, the other end ground connection of this first electric capacity 13; First fuse 15 is connected with high voltage bus 8; First voltage transformer 16 is connected with first fuse 15, and these first voltage transformer, 16 ground connection; Second electric capacity 17 is connected with high voltage bus 8, the other end ground connection of this second electric capacity 17.

As shown in Figure 1, lightning arrester module 2 comprises: second isolating switch 21, first Surge Protector 22, second fuse 23, second voltage transformer 24; Second isolating switch 21 is connected with high voltage bus 8; First Surge Protector 22 is connected with second isolating switch 21, and these first Surge Protector, 22 ground connection; Second fuse 23 is connected with second isolating switch 21; Second voltage transformer 24 is connected with second fuse 23.

Breaker module 3 comprises: the 3rd isolating switch 31, first circuit breaker 32, the 4th isolating switch 33, second current transformer 34, the 3rd electric capacity 35; The 3rd isolating switch 31 is connected with described high voltage bus 8; First circuit breaker 32 is connected with the 3rd isolating switch 31; The 4th isolating switch 33 is connected with first circuit breaker 32, and the 4th isolating switch 33 ground connection; Second current transformer 34 is connected with first circuit breaker 32, and this second current transformer 34 is connected with first low-voltage bus bar 71; The 3rd electric capacity 35 is connected with second current transformer 34, the other end ground connection of the 3rd electric capacity 35; Further, first circuit breaker 32 is a vacuum circuit-breaker, its electrical interlocks respectively and between first isolating switch 12, the 3rd isolating switch 31 and the 4th isolating switch 33.

As shown in Figure 1, transformer 4 is transformers hermetically sealed, oil immersed type, adopts star-delta to connect, and its star side is connected the neutral ground of star side with first low-voltage bus bar 71; The triangle side of transformer 4 links to each other with second current transformer 34 of breaker module 3.

As shown in Figure 1, the 3rd current transformer 51, second circuit breaker 52 that inlet wire module 5 is provided with that circuit connects; Second circuit breaker 52 links to each other with first low-voltage bus bar 71 with the primary side of the 3rd current transformer 51 respectively; The secondary side of the 3rd current transformer 51 links to each other with second low-voltage bus bar 72, also leads to the 3rd fuse 53 on this connecting line, and it is connected with second Surge Protector, 54 circuit of ground connection.

As shown in Figure 1, go out wire module 6 and be provided with two identical outlet groups, each outlet group comprises the 5th isolating switch 61 that is connected with second low-voltage bus bar 72; Each the 5th isolating switch 61 lower end also is connected with two the 3rd circuit breakers 62 respectively, by the lower end outlet of these two the 3rd circuit breakers 62.The 3rd circuit breaker 62 is an air circuit.

In sum, a kind of terminal of the utility model molding box formula power transformation system, simple in structure, operation maintenance convenience, high efficiency, safe and reliable, and pay attention to environmental protection, economize on resources.

Although the content of the utility model has been done detailed introduction through above-mentioned preferred embodiment, will be appreciated that above-mentioned description should not be considered to the restriction to the utility model.After those skilled in the art have read foregoing, for the multiple modification of the utility model with to substitute all will be conspicuous.Therefore, the protection range of the utility model should be limited appended claim.

Claims

1. terminal molding box formula power transformation system; Comprise: first low-voltage bus bar (71), second low-voltage bus bar (72) and high voltage bus (8); It is characterized in that, also comprise and connect: isolate metering module (1), lightning arrester module (2), breaker module (3), transformer (4), inlet wire module (5) and go out wire module (6) through circuit; Wherein, said transformer (4), inlet wire module (5) are connected with first low-voltage bus bar (71) of outside respectively; Said inlet wire module (5), go out wire module (6) and be connected with second low-voltage bus bar (72) of outside respectively; Said isolation metering module (1), lightning arrester module (2), breaker module (3) link to each other with set high voltage bus (8) respectively.

2. according to the said terminal of claim 1 molding box formula power transformation system, it is characterized in that said isolation metering module (1) comprises:

First current transformer (11) that is connected with the high voltage bus (8) of outside;

First isolating switch (12) of connecting with described first current transformer (11);

First electric capacity (13) of connecting with described first isolating switch (12), the other end ground connection of this first electric capacity (13);

First fuse (15) that is connected with described high voltage bus (8);

First voltage transformer (16) of connecting, and this first voltage transformer (16) ground connection with described first fuse (15);

Second electric capacity (17) that is connected with described high voltage bus (8), the other end ground connection of this second electric capacity (17).

3. according to the said terminal of claim 1 molding box formula power transformation system, it is characterized in that said lightning arrester module (2) comprises:

Second isolating switch (21) that is connected with described high voltage bus (8);

First Surge Protector (22) of connecting, and this first Surge Protector (22) ground connection with described second isolating switch (21);

Second fuse (23) of connecting with described second isolating switch (21);

Second voltage transformer (24) of connecting with described second fuse (23).

4. according to the said terminal of claim 2 molding box formula power transformation system, it is characterized in that said breaker module (3) comprises:

The 3rd isolating switch (31) that is connected with described high voltage bus (8);

First circuit breaker (32) of connecting with described the 3rd isolating switch (31);

The 4th isolating switch (33) of connecting, and the 4th isolating switch (33) ground connection with described first circuit breaker (32);

Second current transformer (34) of connecting with described first circuit breaker (32), and this second current transformer (34) is connected with described first low-voltage bus bar (71);

The 3rd electric capacity (35) of connecting with described second current transformer (34), the other end ground connection of the 3rd electric capacity (35);

Further, first circuit breaker (32) is a vacuum circuit-breaker in the described breaker module (3), its electrical interlocks respectively and between described first isolating switch (12), the 3rd isolating switch (31) and the 4th isolating switch (33).

5. according to the said terminal of claim 4 molding box formula power transformation system, it is characterized in that said transformer (4) adopts star-delta to connect: the star side of said transformer (4) is connected the neutral ground of star side with said first low-voltage bus bar (71); The triangle side of said transformer (4) links to each other with second current transformer (34) of said breaker module (3).

6. according to the said terminal of claim 5 molding box formula power transformation system, it is characterized in that said transformer (4) is a transformer hermetically sealed, oil immersed type.

7. according to the said terminal of claim 1 molding box formula power transformation system, it is characterized in that said inlet wire module (5) is provided with the 3rd current transformer (51), second circuit breaker (52) that circuit connects;

Said second circuit breaker (52) links to each other with first low-voltage bus bar (71) with the primary side of said the 3rd current transformer (51) respectively;

The secondary side of said the 3rd current transformer (51) links to each other with second low-voltage bus bar (72), also leads to the 3rd fuse (53) on this connecting line, and it is connected with second Surge Protector (54) circuit of ground connection.

8. according to the said terminal of claim 1 molding box formula power transformation system, it is characterized in that saidly go out wire module (6) and be provided with four identical outlet groups, each outlet group comprises the 5th isolating switch (61) that is connected with said second low-voltage bus bar (72);

Each said the 5th isolating switch (61) lower end also is connected with two the 3rd circuit breakers (62) respectively, by the lower end outlet of these two the 3rd circuit breakers (62).

9. said according to Claim 8 terminal molding box formula power transformation system is characterized in that said the 3rd circuit breaker (62) is an air circuit.