CN104868446A - Simplified-type neutral point integrated equipment - Google Patents
Simplified-type neutral point integrated equipment Download PDFInfo
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- CN104868446A CN104868446A CN201510304043.3A CN201510304043A CN104868446A CN 104868446 A CN104868446 A CN 104868446A CN 201510304043 A CN201510304043 A CN 201510304043A CN 104868446 A CN104868446 A CN 104868446A
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- lightning arrester
- equipment
- neutral point
- communicated
- disconnecting switch
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Abstract
The invention relates to the field of neutral point equipment of main transformers of transformer stations and power plants, and discloses simplified-type neutral point integrated equipment. The equipment comprises a support, a lightning arrester, a disconnecting switch, a discharge gap, and a ground line. The lightning arrester is disposed on the support, and the bottom end of the lightning arrester is communicated with the ground line. One end of the discharge gap is communicated with the top of the lightning arrester, and the other end of the discharge gap is communicated with the ground line. One end of the disconnecting switch is disposed at the top of the lightning arrester, and the other end of the disconnecting switch is communicated with the ground line. According to the invention, one end of the disconnecting switch is disposed at the top of the lightning arrester, and the lightning arrester is used for supporting, thereby enabling the lightning arrester to be combined with the disconnecting switch, simplifying the structure of the equipment, shortening the construction cycle, and saving the cost of equipment because of the reduction of the number of parts. In addition, the size of the equipment is reduced, and the area of a place occupied by the equipment is reduced.
Description
Technical field
The present invention relates to transformer station, power plant main transformer neutral point apparatus field, especially a kind of neutral point the complete sets of equipment.
Background technology
Neutral point the complete sets of equipment are also referred to as neutral point complete set of protective apparatus, neutral point gap relay the complete sets of equipment, transformer neutral point gap earth protective device, gap protection etc.It is primarily of equipment compositions such as lightning arrester, isolating switch and discharging gaps.Be mainly used in the overvoltage protection in transformer station and power plant.
In electrical network actual motion; for short circuit current during restriction single phase ground fault; ensure that system operation mode is when changing; zero-sequence network keeps substantially constant; reach the object making ground protection scope substantially constant; the neutral ground of usual employing some transformers, the earth-free operational mode of another part transformer neutral point, is grounded the conversion with earth-free two states with the opening and closing of isolating switch in neutral point the complete sets of equipment.During isolated neutral, lightning arrester and discharging gap parallel connection use, and both in order to prevent because overvoltage causes neutral point insulation to damage, but the two effect is different.Lightning arrester is mainly for Lightning Over-voltage; Discharging gap is mainly for the power-frequency overvoltage formed because of fault, and the overvoltage that open-phase operation and ferro resonance bring.
In existing neutral point the complete sets of equipment, isolating switch all adopts porcelain vase to support, lightning arrester and isolating switch are arranged side by side, its top live part is connected with isolating switch upper end live part by connecting line, therefore the upper end of both reality is in equipotential, both independently support to arrange and apparatus structure can be made undoubtedly complicated, increase manufacturing cost.Isolating switch and lightning arrester generally belong to different manufacturers, the manufacturing equipment of each own independent processing and technique, and technology is very ripe.Traditional neutral point the complete sets of equipment producer generally can produce isolating switch, but lightning arrester needs outsourcing, and it is to the structure of lightning arrester and be unfamiliar with.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of reduced form neutral point the complete sets of equipment, which simplify apparatus structure, reduces manufacturing cost.
Reduced form neutral point the complete sets of equipment disclosed by the invention, comprise support, lightning arrester, isolating switch, discharging gap and ground wire, described lightning arrester is arranged on support, lightning arrester bottom is connected with ground wire, described discharging gap one end is communicated with lightning arrester top, the other end is connected with ground wire, and described isolating switch one end is arranged at lightning arrester top, and the other end is connected with ground wire.
Preferably, described discharging gap one end is arranged at lightning arrester top, and the other end is connected with ground wire.
Preferably, described lightning arrester is the lightning arrester of high-strength porcelain bushing.
The invention has the beneficial effects as follows: in the present invention, isolating switch one end is arranged at lightning arrester top, using lightning arrester as support, thus lightning arrester is combined with isolating switch, simplify the structure of the complete sets of equipment, construction period can be saved, simultaneously due to the minimizing of original paper, also save equipment purchasing cost.In addition, decrease equipment size, also can save occupation area of equipment.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present invention.
Reference numeral: 1-support, 2-lightning arrester, 3-isolating switch, 4-discharging gap.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further described.
As shown in Figure 1, reduced form neutral point the complete sets of equipment disclosed by the invention, comprise support 1, lightning arrester 2, isolating switch 3, discharging gap 4 and ground wire, described lightning arrester 2 is arranged on support 1, lightning arrester 2 bottom is connected with ground wire, and described discharging gap 4 one end is communicated with lightning arrester 2 top, and the other end is connected with ground wire, described isolating switch 3 one end is arranged at lightning arrester 2 top, and the other end is connected with ground wire.
Wherein, isolating switch 3 one end is arranged at lightning arrester 2 top, using lightning arrester 2 as support, lightning arrester 2 is combined with isolating switch 3, need not separately establish porcelain vase to support, thus simplify system configuration, reduce manufacturing cost.
Adopt device of the present invention, when isolating switch 3 disconnects, transformer neutral point is earth-free, and the proterctive equipment that lightning arrester 2 and discharging gap 4 are in parallel as limiting transformer neutral point overvoltage plays a role; When isolating switch 3 closes, lightning arrester 2 plays a role as post insulator in neutral point the complete sets of equipment.
Discharging gap 4 one end is communicated with lightning arrester 2 top, specifically, can be discharging gap 4 arrange separately porcelain vase support be connected with lightning arrester 2 top by wire again, but, this undoubtedly mode is unfavorable for the simplification of structure, therefore, as optimal way, described discharging gap 4 one end is arranged at lightning arrester 2 top, and the other end is connected with ground wire.Namely be lightning arrester 2 both as the support of isolating switch 3, again as the support of discharging gap 4 one end, so undoubtedly can simplied system structure greatly, reduce structural volume, reduce and manufacturing cost is installed.
In the present invention, lightning arrester 2 must replace original porcelain insulator to play supporting role, and its intensity must meet the requirements, and therefore, as optimal way, described lightning arrester 2 is the lightning arrester of high-strength porcelain bushing.The lightning arrester of high-strength porcelain bushing, as the term suggests its outside insulator has higher intensity, can reach the requirement of strength as strutting piece.
Claims (3)
1. reduced form neutral point the complete sets of equipment, comprise support (1), lightning arrester (2), isolating switch (3), discharging gap (4) and ground wire, described lightning arrester (2) is arranged on support (1), lightning arrester (2) bottom is connected with ground wire, described discharging gap (4) one end is communicated with lightning arrester (2) top, the other end is connected with ground wire, it is characterized in that: described isolating switch (3) one end is arranged at lightning arrester (2) top, and the other end is connected with ground wire.
2. reduced form neutral point the complete sets of equipment as claimed in claim 1, is characterized in that: described discharging gap (4) one end is arranged at lightning arrester (2) top, and the other end is connected with ground wire.
3. reduced form neutral point the complete sets of equipment as claimed in claim 1 or 2, is characterized in that: the lightning arrester that described lightning arrester (2) is high-strength porcelain bushing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510304043.3A CN104868446A (en) | 2015-06-04 | 2015-06-04 | Simplified-type neutral point integrated equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510304043.3A CN104868446A (en) | 2015-06-04 | 2015-06-04 | Simplified-type neutral point integrated equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104868446A true CN104868446A (en) | 2015-08-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510304043.3A Pending CN104868446A (en) | 2015-06-04 | 2015-06-04 | Simplified-type neutral point integrated equipment |
Country Status (1)
| Country | Link |
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| CN (1) | CN104868446A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105140903A (en) * | 2015-09-21 | 2015-12-09 | 中电新源智能电网科技有限公司 | Transformer neutral point gas insulated substation |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201383671Y (en) * | 2009-04-03 | 2010-01-13 | 山东泰开隔离开关有限公司 | Neutral point grounding protective device of transformer |
| CN201541119U (en) * | 2009-07-24 | 2010-08-04 | 保定中恒电气有限公司 | Transformer neutral point gap earth protective device |
| CN203491673U (en) * | 2013-10-18 | 2014-03-19 | 任旭明 | Transformer grounding protection device |
| CN204615362U (en) * | 2015-06-04 | 2015-09-02 | 四川电力设计咨询有限责任公司 | Reduced form neutral point the complete sets of equipment |
-
2015
- 2015-06-04 CN CN201510304043.3A patent/CN104868446A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201383671Y (en) * | 2009-04-03 | 2010-01-13 | 山东泰开隔离开关有限公司 | Neutral point grounding protective device of transformer |
| CN201541119U (en) * | 2009-07-24 | 2010-08-04 | 保定中恒电气有限公司 | Transformer neutral point gap earth protective device |
| CN203491673U (en) * | 2013-10-18 | 2014-03-19 | 任旭明 | Transformer grounding protection device |
| CN204615362U (en) * | 2015-06-04 | 2015-09-02 | 四川电力设计咨询有限责任公司 | Reduced form neutral point the complete sets of equipment |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105140903A (en) * | 2015-09-21 | 2015-12-09 | 中电新源智能电网科技有限公司 | Transformer neutral point gas insulated substation |
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| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150826 |