CN209948516U - Voltage transformer cabinet for million-kilowatt nuclear power station - Google Patents
Voltage transformer cabinet for million-kilowatt nuclear power station Download PDFInfo
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- CN209948516U CN209948516U CN201920624066.6U CN201920624066U CN209948516U CN 209948516 U CN209948516 U CN 209948516U CN 201920624066 U CN201920624066 U CN 201920624066U CN 209948516 U CN209948516 U CN 209948516U
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Abstract
The utility model relates to the technical field of nuclear power station power transmission and distribution and protection, and provides a voltage transformer cabinet of a million kilowatt-level nuclear power station, which comprises a bus chamber and a breaker chamber, wherein the bus chamber is internally provided with a bus, a voltage transformer and a second capacitor, and the breaker chamber is internally provided with a fuse and a lightning arrester; the input of fuse and the input of arrester are connected to the generating line, and the output ground connection of arrester, voltage transformer's input is connected to the output of fuse, and the first end of second electric capacity is connected to voltage transformer's output, and the second end ground connection of second electric capacity. The utility model discloses optimize the inner structure to voltage transformer cabinet, be equipped with very much under the prerequisite that does not carry out major equipment change and adjust arrester mounted position, set up the arrester indoor at the circuit breaker, avoid the electrified industrial safety risk of voltage transformer cabinet place bin, eliminate the major personal casualty risk that exists during the maintenance, guarantee equipment safe operation and on-the-spot fortune dimension personnel operation safety.
Description
Technical Field
The utility model relates to a nuclear power station power transmission and distribution and protection technical field especially relate to a million kilowatt level nuclear power station voltage transformer cabinet.
Background
The voltage transformer cabinet is also called as a PT cabinet and is generally directly arranged on a bus to detect the voltage of the bus and realize the protection function, and a voltage transformer PT, an isolation knife, a fuse, a lightning arrester and the like are mainly arranged inside the voltage transformer cabinet. Arrester and voltage transformer are in same storehouse in the voltage transformer cabinet, and arrester and generating line lug connection when the maintainer overhauls the voltage transformer cabinet after keeping apart through voltage transformer isolation trolley, because the arrester still is electrified, have great safety risk this moment, if this potential safety hazard is not discerned, can take place great personal casualties accident.
Disclosure of Invention
An object of the utility model is to provide a million kilowatt level nuclear power station voltage transformer cabinet to there is the problem of great safety risk when solving among the prior art because voltage transformer cabinet leads to the maintainer to overhaul the voltage transformer cabinet with electricity.
The utility model is realized in such a way, the utility model provides a million kilowatt level nuclear power station voltage transformer cabinet in a first aspect, voltage transformer cabinet includes generating line room and circuit breaker room, be equipped with generating line, voltage transformer and second electric capacity in the generating line room, be equipped with fuse and arrester in the circuit breaker room;
the bus is connected the input of fuse with the input of arrester, the output ground connection of arrester, the output of fuse is connected voltage transformer's input, voltage transformer's output is connected the first end of second electric capacity, the second end ground connection of second electric capacity.
Furthermore, a voltage transformer isolation trolley is further arranged in the circuit breaker chamber, an installation panel is arranged on the voltage transformer isolation trolley, and the fuse and the lightning arrester are fixed on the installation panel.
Furthermore, at least one charged indicator and at least one capacitor are arranged in the bus chamber, and each charged indicator is connected with the bus through one capacitor.
Furthermore, a first charge indicator and a first capacitor are arranged in the bus chamber, a first end of the first capacitor is connected with the bus, a second end of the first capacitor is connected with an input end of the first charge indicator, and an output end of the first charge indicator is grounded;
furthermore, a third charge indicator, a fourth charge indicator, a fifth charge indicator, a third capacitor, a fourth capacitor, a fifth capacitor, a first bus, a second bus and a third bus are arranged in the bus chamber, and the first bus, the second bus and the third bus are respectively connected with the input end of the fuse;
a first end of the third capacitor is connected with the first bus, a second end of the third capacitor is connected with an input end of the third charge indicator, and an output end of the third charge indicator is grounded;
a first end of the fourth capacitor is connected with the second bus, a second end of the fourth capacitor is connected with an input end of the fourth charge indicator, and an output end of the fourth charge indicator is grounded;
the first end of the fifth capacitor is connected with the third bus, the second end of the fifth capacitor is connected with the input end of the fifth charge indicator, and the output end of the fifth charge indicator is grounded.
Further, the voltage transformer cabinet still includes first contact box and second contact box, the fuse passes through first contact box respectively with first generating line, the second generating line and the third generating line is connected, the fuse passes through first contact box with voltage transformer connects.
Further, the voltage transformer cabinet also comprises a controller and a breaker chamber door lock switch, wherein the controller is respectively connected with the electrified indicator and the breaker chamber door lock switch;
and when the controller detects that the charged indicator is charged, the controller controls the door lock switch of the circuit breaker chamber to be switched off.
Further, the voltage transformer cabinet also comprises a voltage transformer isolation trolley locking switch, and the controller is connected with the voltage transformer isolation trolley locking switch;
and when the controller detects that the electrified indicator is electrified, the controller controls the locking switch of the isolation trolley of the voltage transformer to be switched off.
Furthermore, the output end of the lightning arrester is connected with the grounding point of the cabinet body through a copper bar.
Further, the voltage transformer cabinet is a 6.6KV voltage transformer cabinet.
The utility model provides a million kilowatt level nuclear power station voltage transformer cabinet, voltage transformer cabinet include generating line room and circuit breaker room, are equipped with generating line, voltage transformer and second electric capacity in the generating line room, are equipped with fuse and arrester in the circuit breaker room, connect the input of fuse and then be connected with the generating line through the arrester. The utility model discloses optimize the inner structure to voltage transformer cabinet, be equipped with very much under the prerequisite that does not carry out major equipment change and adjust arrester mounted position, set up the arrester indoor at the circuit breaker, voltage transformer cabinet place live industrial safety risk in storehouse when avoiding overhauing eliminates the major personal casualty risk that exists during the maintenance, ensures equipment safety operation and on-the-spot fortune dimension personnel operation safety.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.
Fig. 1 is a circuit diagram of a voltage transformer cabinet of a nuclear power station of million kilowatts according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a voltage transformer cabinet of a nuclear power station of million kilowatts according to an embodiment of the present invention;
fig. 3 is another circuit diagram of a voltage transformer cabinet for a nuclear power plant of megawatt class according to an embodiment of the present invention;
fig. 4 is another schematic structural diagram of a voltage transformer cabinet of a nuclear power plant of megawatt class according to an embodiment of the present invention;
fig. 5 is another schematic structural diagram of a voltage transformer cabinet for a nuclear power plant of megawatt class according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In order to explain the technical means of the present invention, the following description will be given by way of specific examples.
An embodiment of the utility model provides a million kilowatt-level nuclear power station voltage transformer cabinet 300, as shown in fig. 1 and fig. 2, voltage transformer cabinet 300 includes bus-bar room 100 and circuit breaker room 200, is equipped with generating line 50, voltage transformer 40 and second electric capacity C2 in the bus-bar room 100, is equipped with fuse 10 and arrester 30 in the circuit breaker room 200.
The lightning arrester 30 is located in the breaker chamber 200, an input end of the lightning arrester 30 is connected with the bus 50, an output end of the lightning arrester 30 is grounded, and the lightning arrester 30 is used for protecting the voltage transformer cabinet 300 from being damaged by high transient overvoltage during lightning stroke.
This embodiment is through setting up arrester 30 in circuit breaker room 200, harm that brings when protecting voltage transformer cabinet 300 to avoid the thunderbolt on the one hand, on the other hand adjusts the mounted position of arrester 30 under the prerequisite that does not carry out major equipment change, avoided when overhauing bus-bar room 100 because the safety risk that arrester 200 electrified brought, eliminate the major casualties risk that exists during the maintenance, guarantee equipment safe operation and on-the-spot fortune dimension personnel operation safety.
The input end of the fuse 10 is connected with the input ends of the bus 50 and the lightning arrester 30, the output end of the fuse 10 is connected with the input end of the voltage transformer 40, the output end of the voltage transformer 40 is connected with the first end of the second capacitor C2, and the second end of the second capacitor C2 is grounded.
By arranging the fuse 10 in the breaker chamber 200, when the current in the bus 50 is too large, the fuse 10 is in an open state, and the safety of the equipment in the voltage transformer cabinet 300 is ensured.
Further, as shown in fig. 4, the voltage transformer cabinet 300 includes a bus room 100 and a breaker room 200, a voltage transformer isolation trolley 60 is further disposed in the breaker room 200, a mounting panel 70 is disposed on the voltage transformer isolation trolley 60, and the fuse 10 and the lightning arrester 30 are fixed on the mounting panel 70.
The fuse 10 and the arrester 30 are located in the voltage transformer isolation trolley 60, the fuse 10 and the arrester 30 are mounted in a manner that a mounting panel 70 is arranged on the voltage transformer isolation trolley 60, the fuse 10 is fixed on the mounting panel 70 through a first fixing member 11 and a second fixing member 12, the arrester 30 is directly and fixedly mounted on the mounting panel 70, the arrester 30 is located between the first fixing member 11 and the second fixing member 12, and the first fixing member 11 and the second fixing member 12 are insulating fixing members.
Through setting up fuse 10 and arrester 30 in voltage transformer isolation trolley 60 to arrester 30 snap-on has saved arrester 30's installation space on installation panel 70, has avoided simultaneously that voltage transformer isolation trolley 60 keeps apart because arrester 30 is electrified leads to electrified industrial safety risk in the warehouse that voltage transformer cabinet 300 is located, eliminates the serious casualties risk that exists during the maintenance, ensures equipment safe operation and on-the-spot fortune dimension personnel operation safety.
Further, at least one charged indicator and at least one capacitor are arranged in the bus bar chamber 100, and each charged indicator is connected with the bus bar through one capacitor.
In one embodiment, as shown in fig. 3, the voltage transformer cabinet 300 further includes a charge indicator 20 and a first capacitor C1, a first end of the first capacitor C1 is connected to the bus 50, a second end of the first capacitor C1 is connected to the input end of the charge indicator 20, and the output end of the charge indicator 20 is grounded.
In the present embodiment, the bus 50 is connected with the electrical indicator 20, the electrical indicator 20 is used for indicating whether the bus 50 connected with the electrical indicator is electrified, the bus 50 in the original bus chamber 100 is fixed through the post insulator, the electrical indicator 20 is re-wired on the secondary side in the bus chamber 100 in the present embodiment, so as to replace the post insulator of the original bus chamber 100, the electrical indicator 20 is installed in the bus chamber 100 and connected with the bus 50, thereby saving copper bars, satisfying the electrified indication function of the bus 50, and meanwhile, the electrical indicator 20 is used to replace the post insulator to fix the bus 50, thereby saving the number of the post insulators.
In another embodiment, as shown in fig. 4, a third charge indicator 21, a fourth charge indicator 22, a fifth charge indicator 23, a third capacitor 24, a fourth capacitor 25, a fifth capacitor 26, a first bus 27, a second bus 28, and a third bus 29 are disposed in the bus chamber 100, and the first bus 27, the second bus 28, and the third bus 29 are respectively connected to the input terminals of the fuse 10;
a first end of the third capacitor 24 is connected with the first bus 27, a second end of the third capacitor 24 is connected with an input end of the third charge indicator 21, and an output end of the third charge indicator 21 is grounded;
a first end of the fourth capacitor 24 is connected to the second bus 28, a second end of the fourth capacitor 24 is connected to an input end of the fourth charge indicator 22, and an output end of the fourth charge indicator 22 is grounded;
a first terminal of the fifth capacitor 26 is connected to the third busbar 29, a second terminal of the fifth capacitor 26 is connected to an input terminal of the fifth charge indicator 23, and an output terminal of the fifth charge indicator 23 is connected to ground.
The three-phase bus comprises a first bus 27, a second bus 28 and a third bus 29, and further comprises three live indicators, namely a third live indicator 21, a fourth live indicator 22 and a fifth live indicator 23, wherein each live indicator is connected with one phase bus and is used for prompting whether the connected phase bus is live or not, the three-phase bus in the original bus chamber 100 is fixed through a post insulator, the three live indicators are subjected to secondary side rewiring in the bus chamber 100 to replace the post insulator of the original bus chamber, the three live indicators are installed in the bus chamber and are respectively connected with the three-phase bus, copper bars can be saved, the live indication function of each phase bus is met, meanwhile, the post insulator is replaced to fix the bus, and the using number of the post insulators is saved.
Further, as shown in fig. 4, a first contact box 41 and a second contact box 42 are provided in the bus bar compartment 300, the fuse 10 is connected to the first bus bar 27, the second bus bar 28, and the third bus bar 29 through the first contact box 41, and the fuse 10 is connected to the voltage transformer 40 through the second contact box 42.
One end of a contact in the first contact box 41 is connected with the first bus bar 27, the second bus bar 28 and the third bus bar 29, the other end of the contact in the first contact box 41 is connected with the first contact of the fuse 10, the second contact of the fuse 10 is connected with one end of a contact in the second contact box 42, and the other end of the contact in the second contact box 42 is connected with the voltage transformer 40.
The fuse 10 is provided with a first contact and a second contact which are respectively connected with a first contact box 41 and a second contact box 42, the first contact box 41 is internally provided with a contact connected with a bus, the second contact box 42 is internally provided with a contact connected with a voltage transformer 40, and the fuse is well connected with the bus and the voltage transformer through the connection between the contacts in the contact boxes.
Further, the input of arrester 30 passes through the copper bar and is connected with the contact on the fuse 10, and the output of arrester 30 passes through the copper bar and connects cabinet body ground point.
Wherein, the 30 earthing terminals of arrester cause the cabinet body to connect the ground through newly-increased copper bar, realize being connected with factory building owner's grounding net.
Preferably, the voltage transformer cabinet 300 is a 6.6KV voltage transformer cabinet.
Further, as shown in fig. 5, the voltage transformer cabinet 300 further includes a controller 80 and a breaker chamber door lock switch 81, the controller 80 being connected with the power indicator 20 and the breaker chamber door lock switch 81, respectively;
when the controller 80 detects that the charged indicator 20 is charged, the door lock switch 81 of the circuit breaker chamber is controlled to be turned off;
the voltage transformer cabinet 300 further comprises a voltage transformer isolation trolley locking switch 82, and the controller 80 is connected with the voltage transformer isolation trolley locking switch 82;
when the controller 80 detects that the charged indicator 20 is charged, the voltage transformer isolation trolley latching switch 82 is controlled to be switched off.
When the maintenance is carried out, when the controller 80 detects that the electrified indicator 20 is electrified, it is described that electricity exists on the bus 50, at the moment, the door lock switch 81 of the control circuit breaker room is disconnected, so that a maintenance worker can not open the door of the circuit breaker room, the live working of the maintenance worker is avoided, in the maintenance process, when the controller 80 detects that the electrified indicator 20 is electrified, the locking switch 82 of the voltage transformer isolation trolley is controlled to be disconnected, so that the voltage transformer isolation trolley 60 is in a locking state, the voltage transformer isolation trolley 60 can not enter the working position through the operating mechanism, when the electrified indicator 20 is not electrified, the voltage transformer isolation trolley 60 is unlocked again, the voltage transformer isolation trolley 60 can only shake into the working position through the operating mechanism, and the safety of the maintenance worker is ensured.
The utility model discloses optimize voltage transformer cabinet 300's inner structure, adjust arrester 30 mounted position under the prerequisite that does not carry out major equipment change, install arrester 30 on the voltage transformer isolation trolley 60 in circuit breaker room 200, voltage transformer cabinet 300 place live industrial safety risk in storehouse when avoiding voltage transformer isolation trolley 60 to keep apart, eliminate the major personal casualty risk that exists during the maintenance, guarantee equipment safe operation and on-the-spot fortune dimension personnel operation safety.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (10)
1. The voltage transformer cabinet of the million kilowatt nuclear power station is characterized by comprising a bus chamber and a circuit breaker chamber, wherein a bus, a voltage transformer and a second capacitor are arranged in the bus chamber, and a fuse and a lightning arrester are arranged in the circuit breaker chamber;
the bus is connected the input of fuse with the input of arrester, the output ground connection of arrester, the output of fuse is connected voltage transformer's input, voltage transformer's output is connected the first end of second electric capacity, the second end ground connection of second electric capacity.
2. The megawatt nuclear power station voltage transformer cabinet as claimed in claim 1, wherein: the indoor voltage transformer isolation trolley that still is equipped with of circuit breaker, be equipped with the installation panel on the voltage transformer isolation trolley, the fuse with the arrester is fixed on the installation panel.
3. The megawatt nuclear power station voltage transformer cabinet as claimed in claim 2, wherein: the bus chamber is also provided with at least one charged indicator and at least one capacitor, and each charged indicator is connected with the bus through one capacitor.
4. The megawatt nuclear power station voltage transformer cabinet of claim 3, wherein: the bus chamber is internally provided with a first charge indicator and a first capacitor, the first end of the first capacitor is connected with the bus, the second end of the first capacitor is connected with the input end of the first charge indicator, and the output end of the first charge indicator is grounded.
5. The megawatt nuclear power station voltage transformer cabinet of claim 3, wherein: a third charge indicator, a fourth charge indicator, a fifth charge indicator, a third capacitor, a fourth capacitor, a fifth capacitor, a first bus, a second bus and a third bus are arranged in the bus chamber, and the first bus, the second bus and the third bus are respectively connected with the input end of the fuse;
a first end of the third capacitor is connected with the first bus, a second end of the third capacitor is connected with an input end of the third charge indicator, and an output end of the third charge indicator is grounded;
a first end of the fourth capacitor is connected with the second bus, a second end of the fourth capacitor is connected with an input end of the fourth charge indicator, and an output end of the fourth charge indicator is grounded;
the first end of the fifth capacitor is connected with the third bus, the second end of the fifth capacitor is connected with the input end of the fifth charge indicator, and the output end of the fifth charge indicator is grounded.
6. The megawatt nuclear power station voltage transformer cabinet of claim 5, wherein: the voltage transformer cabinet further comprises a first contact box and a second contact box, the fuse is connected with the first bus, the second bus and the third bus through the first contact box respectively, and the fuse is connected with the voltage transformer through the second contact box.
7. The megawatt nuclear power station voltage transformer cabinet of claim 3, wherein: the voltage transformer cabinet also comprises a controller and a breaker room door lock switch, and the controller is respectively connected with the electrified indicator and the breaker room door lock switch;
and when the controller detects that the charged indicator is charged, the controller controls the door lock switch of the circuit breaker chamber to be switched off.
8. The megawatt nuclear power plant voltage transformer cabinet of claim 7, wherein: the voltage transformer cabinet also comprises a voltage transformer isolation trolley locking switch, and the controller is connected with the voltage transformer isolation trolley locking switch;
and when the controller detects that the electrified indicator is electrified, the controller controls the locking switch of the isolation trolley of the voltage transformer to be switched off.
9. The megawatt nuclear power station voltage transformer cabinet as claimed in claim 1, wherein: the output end of the lightning arrester is connected with the grounding point of the cabinet body through a copper bar.
10. The megawatt nuclear power station voltage transformer cabinet as claimed in claim 1, wherein: the voltage transformer cabinet is a 6.6KV voltage transformer cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920624066.6U CN209948516U (en) | 2019-04-30 | 2019-04-30 | Voltage transformer cabinet for million-kilowatt nuclear power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920624066.6U CN209948516U (en) | 2019-04-30 | 2019-04-30 | Voltage transformer cabinet for million-kilowatt nuclear power station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209948516U true CN209948516U (en) | 2020-01-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920624066.6U Active CN209948516U (en) | 2019-04-30 | 2019-04-30 | Voltage transformer cabinet for million-kilowatt nuclear power station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209948516U (en) |
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2019
- 2019-04-30 CN CN201920624066.6U patent/CN209948516U/en active Active
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