CN202524063U - 330kV-500kV transformer neutral point complete equipment - Google Patents
330kV-500kV transformer neutral point complete equipment Download PDFInfo
- Publication number
- CN202524063U CN202524063U CN2012200521024U CN201220052102U CN202524063U CN 202524063 U CN202524063 U CN 202524063U CN 2012200521024 U CN2012200521024 U CN 2012200521024U CN 201220052102 U CN201220052102 U CN 201220052102U CN 202524063 U CN202524063 U CN 202524063U
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- neutral point
- equipment
- lightning arrester
- transformer
- isolating switch
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Abstract
The utility model relates to 330kV-500kV transformer neutral point complete equipment, which comprises a lighting arrester, a disconnecting switch, a support conducting tube, a discharge electrode and a grounding electrode. The utility model is characterized by further comprising an equipment base which is horizontally disposed. The lighting arrester, the disconnecting switch and the support conducting tube are all fixedly installed on the equipment base vertically. The equipment base is supported and positioned by a plurality of support rods. The complete equipment enables the lighting arrester, the disconnecting switch, the support conducting tube and the like to form an integral combination after additionally arranging the equipment base, thereby solving such problems existing in the prior art as large size, high cost and cumbersome installation because each electrical component is relatively independent, so that a long connecting wire is needed, and each component also needs to be fixedly installed by arranging a support. Furthermore, hidden troubles such as unsafe and unstable power network operation and the like are solved by carrying out the technical measures of ordered arrangement, organic combination and the like of all the components, and the safety and the reliability of the power network operation are improved in turn.
Description
[technical field]
The utility model relates to a kind of 330kV-500kV transformer neutral point the complete sets of equipment.
[background technology]
The transformer neutral point the complete sets of equipment are to be used to realize the direct ground connection operation of transformer neutral point; Or through the equipment of lightning arrester and discharging gap ground connection operation; To avoid producing overvoltage, cause transformer neutral point voltage to raise and cause infringement transformer because of the system failure or thunder and lightning.At present; This device generally is made up of electric elements such as isolating switch, lightning arrester, protection gap, current transformers, and have following problem usually: each electric elements is relatively independent, not only needs very long connection lead; And each element all need found a support and installs and fixes; Volume is big, cost is high, installation is loaded down with trivial details, particularly has hidden danger such as operation of power networks is dangerous, instability, the operation of power networks poor reliability.
[summary of the invention]
For solving the problems of the technologies described above; The utility model aims to provide a kind of 330kV-500kV transformer neutral point the complete sets of equipment; This device has compact conformation, convenient installation, thereby helps eliminating hidden danger such as operation of power networks is dangerous, instability, and then improves the operation of power networks unfailing performance.
The scheme that solves the problems of the technologies described above is following: this 330kV-500kV transformer neutral point the complete sets of equipment; Its structure comprises lightning arrester, isolating switch, current transformer; And sparking electrode, grounding electrode; It is characterized in that: also have a level to the plant bottom case that is provided with, said lightning arrester, isolating switch summation current transformer all are fixedly mounted on this plant bottom case, and said plant bottom case is located by some they sup-port.
As preferably, said lightning arrester, isolating switch, support contact tube are compartment from left to right successively and arrange.
As preferably, said lightning arrester top high-voltage side is provided with grading ring, terminal board, and bottom ground connection side is through monitor ground connection.
As preferably, said sparking electrode and lightning arrester also connect, and are located at the top of isolating switch.
As preferably, said current transformer supports contact tube by one and is supported and fixed on the said plant bottom case, and the P1 of this current transformer end is connected with grounding electrode, and grounding electrode and said sparking electrode are that level is to being oppositely arranged; The P2 end of this current transformer is through connecting copper bar, through supporting the direct ground connection of contact tube.
Beneficial effect: compared with prior art; After the utility model is set up plant bottom case; Make lightning arrester, isolating switch and support contact tube etc. constitute an entire combination, thereby it is relatively independent to have solved each electric elements of prior art, not only needs very long connection lead; And each element all need found a support and install and fix, and volume is big, cost is high, loaded down with trivial details problem is installed.Moreover, after the technical measures such as the orderly arrangement through all elements, organic assembling, solved hidden danger such as operation of power networks is dangerous, instability, and then improved the security reliability of operation of power networks.
[description of drawings]
Fig. 1 is the Facad structure sketch map of an embodiment of the utility model.
Among the figure: support column 1, plant bottom case 2, monitor 3, lightning arrester 4, grading ring 5, terminal board 6; Connect lead 7, isolating switch 8, sparking electrode 9, discharging gap 10, grounding electrode 11; Current transformer 12 connects copper bar 13, supports contact tube 14, operator link 15, operating mechanism 16.
[embodiment]
Referring to Fig. 1; From left to right successively by main elements such as lightning arrester 4, isolating switch 8, discharging gap 10, current transformers 12 and connect and form; Its structure is arranged horizontally formula, is installed in lightning arrester 4, isolating switch 8, discharging gap 10, current transformer 12 (through supporting contact tube 14) etc. same as on the support bar 1 equipment supported base 2 respectively.The left side is a lightning arrester 4, and the lightning arrester high-pressure side is furnished with grading ring 5, and the ground connection side is through monitor 3 ground connection; The centre is an isolating switch 8, is provided with operating mechanism 16 in the isolating switch base bottom, makes the isolating switch disconnecting link make the vertical closing operation that divides; Discharging gap 10 is established on the right side of isolating switch; Sparking electrode 9 is directly arranged in top, isolating switch high-pressure side; Grounding electrode 11 is fixed on the P1 end of current transformer 12; The P2 end of current transformer is connected with the earth through support contact tube 14, plant bottom case 2, support column 1 through connecting copper bar 13, makes it to constitute grounded circuit.
Operation principle is following: when moving according to the direct ground connection of dispatching of power netwoks needs, actuating operating mechanism 16, the ground connection disconnecting link in the isolating switch 8 are made upwards feed motion, and system is moved with direct grounding way; When actuating operating mechanism 16, when the ground connection disconnecting link in the isolating switch 8 is done the action of downward separating brake, make system with lightning arrester 4 or the operation of discharging gap 10 earthing modes; When lightning overvoltage or switching overvoltage invasion electrical network; Lightning arrester 4 actions absorb and release overvoltage energy, are connected with the earth through monitor 3; Infringement is avoided in the insulation of protection transformer neutral point, and this moment, discharging gap 10 was failure to actuate.Monitor 3 is used to monitor leakage current of an arrester and record lightning arrester action frequency, judges the operation conditions of lightning arrester with this.In effective grounding system, form local earth-free because of earth fault; When the neutral point of 330kV-500kV transformer has power-frequency overvoltage to produce; And when this superpotential amplitude reaches the discharge voltage value in gap; Discharging gap 10 through between sparking electrode 9 and the grounding electrode 11 discharges, and electrical discharge arc makes the neutral point of local earth-free 330kV-500kV transformer change the effectively earthed system by arcing ground into the operation of transformer neutral point transient earthing; Drop to the discharge voltage value in gap when following in superpotential amplitude; Electric arc can be from horizontal blanking, and current transformer 12 exports the current value of measuring to protective relaying device, thereby realizes the superpotential automatic protection of transformer neutral point.
Claims (5)
1. 330kV-500kV transformer neutral point the complete sets of equipment; Its structure comprises lightning arrester (4), isolating switch (8), current transformer (12); And sparking electrode (9), grounding electrode (11); It is characterized in that: also have a level to the plant bottom case (2) that is provided with, said lightning arrester (4), isolating switch (8) summation current transformer (12) all are fixedly mounted on this plant bottom case (2), and said plant bottom case (2) supports the location by some support bars (1).
2. transformer neutral point the complete sets of equipment as claimed in claim 1 is characterized in that: said lightning arrester (4), isolating switch (8), support contact tube (14) are compartment from left to right successively and arrange.
3. according to claim 1 or claim 2 transformer neutral point the complete sets of equipment, it is characterized in that: said lightning arrester (4) top high-voltage side is provided with grading ring (5), terminal board (6), and bottom ground connection side is through monitor (3) ground connection.
4. according to claim 1 or claim 2 transformer neutral point the complete sets of equipment, it is characterized in that: said sparking electrode (9) also connects with lightning arrester (4), is located at the top of isolating switch (8).
5. according to claim 1 or claim 2 transformer neutral point the complete sets of equipment; It is characterized in that: said current transformer (12) supports contact tube (14) by one and is supported and fixed on the said plant bottom case (2); The P1 end of this current transformer (12) is connected with grounding electrode (11), and grounding electrode (11) is that level is to being oppositely arranged with said sparking electrode (9); The P2 end of this current transformer (12) is through connecting copper bar (13), through supporting directly ground connection of contact tube (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200521024U CN202524063U (en) | 2012-02-17 | 2012-02-17 | 330kV-500kV transformer neutral point complete equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200521024U CN202524063U (en) | 2012-02-17 | 2012-02-17 | 330kV-500kV transformer neutral point complete equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202524063U true CN202524063U (en) | 2012-11-07 |
Family
ID=47106992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200521024U Expired - Fee Related CN202524063U (en) | 2012-02-17 | 2012-02-17 | 330kV-500kV transformer neutral point complete equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202524063U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103323759A (en) * | 2013-06-26 | 2013-09-25 | 深圳供电局有限公司 | Transformer neutral point parallel protection gap test platform |
-
2012
- 2012-02-17 CN CN2012200521024U patent/CN202524063U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103323759A (en) * | 2013-06-26 | 2013-09-25 | 深圳供电局有限公司 | Transformer neutral point parallel protection gap test platform |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121107 Termination date: 20170217 |