Prefabricated substation
Technical Field
The utility model relates to a prepackage type transformer substation.
Background
Existing pre-installed substations generally include a high-voltage chamber, a transformer chamber and a low-voltage chamber.
As shown in fig. 1, a high voltage cabinet body 203 is disposed in the high voltage chamber 211, the high voltage cabinet body 203 is divided into a plurality of compartments, a line inlet terminal 209 (fixed to the high voltage cabinet body through a post insulator 210), a line inlet side disconnecting switch 208, a current transformer 206, a voltage transformer 201, a circuit breaker 202, a line outlet side disconnecting switch 207 and a line outlet terminal 215 are disposed in each of the compartments, and corresponding electrical components are connected through a high voltage bus 205. The external power of the substation is introduced into the high-voltage chamber through the incoming side disconnecting switch 208 and then introduced into the transformer chamber through the outgoing terminal 215. An instrument room 204 is also arranged in the high-voltage cabinet body. The transformer chamber is provided with a transformer 212, the low-voltage chamber is provided with a low-voltage cabinet 214, and the transformer 212 is connected to the low-voltage cabinet 214 through a low-voltage side bus 213. The high pressure chamber 211 is further provided with a cabinet door, and the cabinet door is provided with an interlocking mechanism.
However, the external dimensions and cost of the preassembled transformer substation increase due to the large external dimensions of the high-voltage cabinet 203. In addition, the design of the existing high-pressure chamber also brings great inconvenience to hoisting, transportation and installation.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a prepackage type transformer substation for solve the great problem of overall dimension of current prepackage type transformer substation.
In order to achieve the above object, the utility model discloses a technical scheme of prepackage type transformer substation is: the prefabricated substation comprises a high-voltage chamber and a transformer chamber;
an inlet side isolating switch and an outlet side isolating switch are arranged in the high-voltage chamber; a voltage transformer and a current transformer are further arranged in the high-voltage chamber, the voltage transformer is used for detecting the voltage to ground of each phase, and the current transformer is used for detecting the current of each phase;
a vertical insulating partition plate and a horizontal insulating partition plate are arranged in the high-voltage chamber, the vertical insulating partition plate and the horizontal insulating partition plate enclose a wire inlet compartment, the wire inlet compartment is arranged on one side close to the transformer chamber, and a wire inlet terminal is arranged in the wire inlet compartment; the other parts in the high-voltage chamber form an integral device compartment, and the inlet side isolating switch, the outlet side isolating switch, the voltage transformer and the current transformer are all arranged in the device compartment and are fixed on the wall of the device compartment;
the device compartment comprises a compartment door side which is far away from one side of the transformer compartment, an inner door and an outer door are arranged on the compartment door side, the inner door is used for enclosing the device compartment, and the outer door is used for forming the outer wall of the corresponding side of the prefabricated substation;
the prefabricated substation further comprises an instrument room arranged at the top of the room door side, the inner door comprises an instrument room door corresponding to the instrument room, and the instrument room is arranged on the back of the instrument room door.
The utility model discloses a prepackage type transformer substation's beneficial effect is: the prefabricated substation comprises an incoming line compartment and an integral device compartment, wherein the incoming line side isolating switch, the outgoing line side isolating switch, the voltage transformer and the current transformer are all arranged in the device compartment and fixed on the wall of the device compartment, and compared with the prefabricated substation in which a high-voltage cabinet is arranged on the high-voltage side and an electrical element is fixed on a cabinet body of the high-voltage cabinet, the space occupied by the cabinet body of the high-voltage cabinet is saved, the overall dimension of the prefabricated substation is reduced, and therefore the floor area of the prefabricated substation is reduced. Moreover, the manufacturing cost of the prefabricated substation is reduced without arranging a high-voltage cabinet, and convenience can be brought to hoisting, transportation and installation.
Furthermore, one of the incoming line side isolating switch and the outgoing line side isolating switch is arranged on the top wall of the device compartment, and the other is fixed on the vertical insulating partition plate.
The high-voltage switch has the beneficial effects of adapting to the device arrangement condition of a high-voltage chamber and ensuring the isolation of incoming lines and outgoing lines.
Furthermore, the incoming line side isolating switch is connected with the incoming line terminal through a conducting bar, and the conducting bar penetrates through a transverse insulating partition plate of the incoming line compartment; the outgoing line side isolating switch is led out of the transformer chamber through an outgoing line cable, and the outgoing line cable is provided with an insulating sheath; and a cable fixing structure for fixing the outgoing cable is arranged on the transverse insulating partition plate.
The high-voltage protection device has the beneficial effects that the high-voltage chamber incoming line is convenient and the high-voltage incoming line is protected.
Further, one of the voltage transformer and the current transformer is disposed on a top chamber wall of the device compartment, and the other is disposed on a bottom chamber wall of the device compartment.
The novel solar water heater has the beneficial effect that the space can be reasonably utilized.
Further, the below of instrument room door is equipped with the well department that is located interior door width direction middle part and is located the side door of middle part door side, and prepackage type transformer substation still includes the circuit breaker, the circuit breaker sets up the inboard of interior door and corresponds with middle part door.
Its beneficial part lies in, sets up the side door and can avoid the interior door width that corresponds with the circuit breaker too big and influence the use.
Drawings
Fig. 1 is a schematic structural view of a prefabricated substation using a high-voltage cabinet in the prior art;
fig. 2 is a front view of an embodiment of a pre-assembled substation of the present invention;
FIG. 3 is a side view of FIG. 2;
FIG. 4 is the view of FIG. 3 with the outer door removed;
3 FIG. 3 5 3 is 3 a 3 cross 3- 3 sectional 3 view 3 taken 3 along 3 line 3 A 3- 3 A 3 of 3 FIG. 3 3 3; 3
In the figure: 1. the transformer comprises a voltage transformer, 2, a circuit breaker, 3, an inner door upright post, 4, an instrument room, 5, a high-voltage bus, 6, a current transformer, 7, an outgoing line side isolating switch, 8, an incoming line side isolating switch, 9, an incoming line terminal, 10, a pillar insulator, 11, a transformer room side chamber wall, 12, a transformer, 13, a low-voltage side bus, 14, a low-voltage cabinet, 15, an incoming line compartment, 151, a transverse insulating partition, 152, a vertical insulating partition, 16, a conductive bar, 17, an outgoing line cable, 18, a transformer room, 19, a low-voltage chamber, 20, a high-voltage chamber, 21, an outer door, 22, an outer door frame, 23, an instrument room door, 24, a middle door, 25, a side door, 26 and an outer door upright post.
201. The high-voltage cabinet comprises a voltage transformer 202, a circuit breaker 203, a high-voltage cabinet body 204, an instrument room 205, a high-voltage bus, 206, a current transformer 207, an outlet side disconnecting switch 208, an inlet side disconnecting switch 209, an inlet terminal 210, a post insulator 211, a high-voltage room 212, a transformer 213, a low-voltage side bus 214, a low-voltage cabinet 215 and an outlet terminal.
Detailed Description
The following describes embodiments of the present invention with reference to the accompanying drawings.
In a specific embodiment of the prefabricated substation of the present invention, as shown in fig. 2, the prefabricated substation includes a high voltage chamber 20, a transformer chamber 18 and a low voltage chamber 19; the chamber walls of the high-voltage chamber 20 comprise the transformer chamber side chamber walls 11, the high-voltage chamber 20 being separated from the transformer chamber 18 by the transformer chamber side chamber walls 11. A vertical insulating partition plate 152 and a horizontal insulating partition plate 151 are vertically arranged in the high-pressure chamber 20, and one side of the horizontal insulating partition plate 151, which is far away from the vertical insulating partition plate 152, is connected to the middle part of the side chamber wall 11 of the transformer chamber in the height direction; a vertical insulating partition 152 is fixed to the bottom wall of the high pressure chamber 20. The vertical insulating partition 152, the transverse insulating partition 151 and part of the chamber wall of the high-voltage chamber 20 enclose an incoming line compartment 15, and the incoming line compartment 15 is arranged on one side close to the transformer chamber 18. The incoming line compartment 15 is internally provided with an incoming line terminal 9 for high voltage electricity to be led into the substation, and the incoming line terminal 9 is fixed on the side wall of the incoming line compartment 15 through a post insulator 10.
The parts except the inlet wire compartment 15 in the high-voltage chamber 20 form an integral device compartment, the inlet wire side isolating switch 8, the outlet wire side isolating switch 7, the voltage transformer 1 and the current transformer 6 are all arranged in the device compartment and fixed on the wall of the device compartment, and electrical elements in the device compartment are all connected through a high-voltage bus 5.
The outlet side isolating switch 7 is fixed on the vertical insulating partition 152, the inlet side isolating switch 8 is arranged on the top chamber wall of the device compartment right above the outlet side isolating switch 7, and the inlet side isolating switch 8 is fixed on the mounting beam on the top wall of the high-pressure chamber through the isolating switch fixing structure on the top wall of the high-pressure chamber.
The inlet-side disconnector 8 is connected to the inlet terminals 9 by means of a conducting bar 16, which conducting bar 16 passes through a transverse insulating partition 151 of the inlet compartment 15. The outgoing side isolating switch 7 is led out to a transformer chamber 18 through an outgoing cable 17 and is connected with a transformer 12 in the transformer chamber, and a cable fixing structure for fixing the outgoing cable is arranged on the transverse insulating partition plate. To meet the insulation requirements, the outgoing cable 17 has an insulating sheath.
The circuit breaker 2 is provided with two fractures, one fracture is connected with the outgoing line side disconnecting switch 7, the other fracture is connected with the current transformer 6, and the voltage transformer 1 is connected on the high-voltage bus 5 between the outgoing line side disconnecting switch 7 and the circuit breaker 2. The current transformer 6 is used for detecting the current of each phase; the current transformer 6 is arranged on the top chamber wall of the device compartment, and the current transformer 6 is fixed on a mounting beam on the top wall of the high-pressure chamber through a transformer fixing structure. A voltage transformer 1 is used to detect the voltage to ground of each phase, the voltage transformer 1 being arranged on the bottom chamber wall of the device compartment.
As shown in fig. 3, 4 and 5, the side of the device compartment away from the transformer room 18 is a room door side, the room door side is provided with an inner door, an outer door 21 and an instrument room 4 arranged on the top of the room door side, the outer door 21 is arranged in a frame structure enclosed by an outer door pillar 26 and an outer door frame 22, and the outer door 21 is used for forming an outer wall of the corresponding side of the prefabricated substation. Interior door stand 3 supplies interior door fixed connection, and the interior door is used for enclosing into the device compartment, and the interior door includes instrument room door 23, middle part door 24 and side door 25 that correspond with instrument room 4, and instrument room 4 sets up the back at instrument room door 23. The lower part of the instrument room door 23 is provided with a middle door 24 at the middle part of the inner door in the width direction, a side door 25 is arranged at the side of the middle door 24, and the breaker 2 is arranged at the inner side of the inner door and corresponds to the middle door 24.
The transformer 12 is connected to a low-voltage cabinet 14 in a low-voltage chamber 19 via a low-voltage side bus bar 13. When the transformer substation operates, the transformer 12 converts high-voltage electricity into low-voltage electricity and outputs the low-voltage electricity through the low-voltage cabinet 14.
In this embodiment, the incoming line side isolation switch is disposed on the top chamber wall of the device compartment, and the outgoing line side isolation switch is disposed below the incoming line side isolation switch. The "lower" may be a right lower side or a side lower side.
In this embodiment, the current transformer is disposed on the top wall of the device compartment, and the voltage transformer is disposed on the bottom wall of the device compartment, in other embodiments, the current transformer and the voltage transformer may be disposed in other arrangements, for example, one of the current transformer and the voltage transformer is disposed on the side wall of the device compartment, or both are disposed on the side wall of the device compartment.
In this embodiment, the interior door includes the instrument room door, is located the well department at interior door width direction middle part and is located the side door of middle part door side below the instrument room door, and in other embodiments, the form of interior door can set up according to the actual use demand, for example, only sets up well department in the below of instrument room door, and the width of well department matches with the width of interior door.