CN107276032A - A kind of transformer neutral point earth protection device - Google Patents
A kind of transformer neutral point earth protection device Download PDFInfo
- Publication number
- CN107276032A CN107276032A CN201610215545.3A CN201610215545A CN107276032A CN 107276032 A CN107276032 A CN 107276032A CN 201610215545 A CN201610215545 A CN 201610215545A CN 107276032 A CN107276032 A CN 107276032A
- Authority
- CN
- China
- Prior art keywords
- transformer
- protection device
- neutral point
- pillar
- disconnecting switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/04—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for transformers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transformers For Measuring Instruments (AREA)
Abstract
A kind of transformer neutral point earth protection device, including pillar, post top portion, which is provided with base, base, is provided with current transformer, supports insulative, arrester, disconnecting switch；Wiring aluminium row is provided with supports insulative, the ground wire of wiring aluminium row introduces disconnecting switch by supports insulative by arrester.The side of pillar is installed with motor drive mechanism, and motor drive mechanism is connected by sleeve pipe and the lead of disconnecting switch, there is discharging gap between upper lead and supports insulative of current transformer.A kind of transformer neutral point earth protection device of the present invention, integrate the electrical equipments such as disconnecting switch, arrester, discharging gap summation current transformer and constitutes, with occupying little space, installation and debugging safety, the features such as security performance is high.
Description
Technical field
The present invention relates to a kind of electric protective device, particularly a kind of transformer neutral point earth protection device.
Background technology
Graded insulated transformer being selected current China power network more, in the transformer station of many parallel operation of transformers, neutral point of main transformer typically uses the method for operation of partial earthing, but take partial earthing mode to run in 110KV and 220KV power transformer neutral points, the system failure is easily caused, and is inconvenient to change, therefore, ensure the safe operation of transformer, it is necessary to use a kind of earthing or grounding means of safety and reliability.
The content of the invention
The present invention provides a kind of transformer neutral point earth protection device, integrate the electrical equipments such as disconnecting switch, arrester, discharging gap summation current transformer and constitutes, with occupying little space, installation and debugging safety, the features such as security performance is high.
The technical solution adopted in the present invention is：
A kind of transformer neutral point earth protection device, including pillar, post top portion, which is provided with base, base, is provided with current transformer, supports insulative, arrester, disconnecting switch；Wiring aluminium row is provided with supports insulative, the ground wire of wiring aluminium row introduces disconnecting switch by supports insulative by arrester.The side of pillar is installed with motor drive mechanism, and motor drive mechanism is connected by sleeve pipe and the lead of disconnecting switch, there is discharging gap between upper lead and supports insulative of current transformer.
The current transformer side is installed on transformer outlet casing tube,
The secondary side of the current transformer is configured with two secondary of 0.5/10P.
The base and the embedded board of post top portion are connected by pre-buried earth stud.
The motor drive mechanism is fixedly mounted by being arranged on the prefabricated hook of the side of pillar.
A kind of transformer neutral point earth protection device of the present invention, technique effect is as follows：
1）, current transformer be installed on transformer outlet casing tube, transformer outlet casing tube is the primary insulation device outside transformer tank, and the lead-out wire of Transformer Winding has to pass through outlet casing tube.Current transformer side is installed on transformer outlet casing tube by the present invention, and current transformer is fixedly secured together with base, possesses the advantage occupied little space.
2）, current transformer secondary side be configured with two secondary of 0.5/10P, for measurement protection use, not the used time by its short circuit.Installation and debugging safety.
3）, base and post top portion embedded board connected by pre-buried earth stud, base, pillar are firmly installed, while so that pillar has grounding function concurrently, without other ground wire.
4）, apparatus of the present invention integrate the electrical equipments such as disconnecting switch, arrester, summation current transformer composition, with occupying little space, installation and debugging safety, the features such as security performance is high.
Brief description of the drawings
Fig. 1 is apparatus of the present invention structural representation.
Embodiment
As shown in figure 1, a kind of transformer neutral point earth protection device, including pillar 8, the top of pillar 8, which is provided with base 7, base 7, is provided with current transformer 4, supports insulative 5, arrester 6, disconnecting switch 3；Wiring aluminium row 2 is provided with supports insulative 5, the ground wire of wiring aluminium row 2 introduces disconnecting switch 3 by supports insulative 5 by arrester 6.
The base 7 is connected with the embedded board at the top of pillar 8 by pre-buried earth stud.Pillar 8 is two, is made using cement pole, its height can be determined by requirement of engineering.The side of wherein one pillar is installed with motor drive mechanism 10, and motor drive mechanism 10 is connected by sleeve pipe 9 with the lead of disconnecting switch 3, and motor drive mechanism 10 controls disconnecting switch 3 to work by sleeve pipe 9.
There is discharging gap 1 between the upper lead of current transformer 4 and supports insulative 5 of most side.The motor drive mechanism 10 is fixedly mounted by being arranged on the prefabricated hook of the side of pillar 8.
The side of current transformer 4 is installed on transformer outlet casing tube, and opposite side is arranged on base 7.The secondary side of current transformer 4 is configured with two secondary of 0.5/10P, is used for measurement protection, the used time is not short-circuit by it.
Claims (5)
1. a kind of transformer neutral point earth protection device, including pillar（8）, pillar（8）Top is provided with base（7）, it is characterised in that base（7）On current transformer is installed（4）, supports insulative son（5）, arrester（6）, disconnecting switch（3）；Supports insulative（5）On be provided with wiring aluminium row（2）, wiring aluminium row（2）Ground wire by supports insulative son（5）By arrester（6）Introduce disconnecting switch（3）；Pillar（8）Side be installed with motor drive mechanism（10）, motor drive mechanism（10）Pass through sleeve pipe（9）With disconnecting switch（3）Lead connection, current transformer（4）Upper lead and supports insulative（5）Between there is discharging gap（1）.
2. a kind of transformer neutral point earth protection device according to claim 1, it is characterised in that the current transformer（4）Side is installed on transformer outlet casing tube.
3. a kind of transformer neutral point earth protection device according to claim 1 or claim 2, it is characterised in that the current transformer（4）Secondary side be configured with two secondary of 0.5/10P.
4. a kind of transformer neutral point earth protection device according to claim 1, it is characterised in that the base（7）With pillar（8）The embedded board at top is connected by pre-buried earth stud.
5. a kind of transformer neutral point earth protection device according to claim 1, it is characterised in that the motor drive mechanism（10）By being arranged on pillar（8）Side prefabricated hook be fixedly mounted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610215545.3A CN107276032A (en) | 2016-04-08 | 2016-04-08 | A kind of transformer neutral point earth protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610215545.3A CN107276032A (en) | 2016-04-08 | 2016-04-08 | A kind of transformer neutral point earth protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107276032A true CN107276032A (en) | 2017-10-20 |
Family
ID=60052624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610215545.3A Pending CN107276032A (en) | 2016-04-08 | 2016-04-08 | A kind of transformer neutral point earth protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107276032A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110752536A (en) * | 2019-09-18 | 2020-02-04 | 国网浙江省电力有限公司经济技术研究院 | Gas insulated metal enclosed neutral point complete equipment |
| CN113066646A (en) * | 2021-03-09 | 2021-07-02 | 国网浙江省电力有限公司湖州供电公司 | 110kV transformer neutral point vacuum gap grounding complete equipment |
-
2016
- 2016-04-08 CN CN201610215545.3A patent/CN107276032A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110752536A (en) * | 2019-09-18 | 2020-02-04 | 国网浙江省电力有限公司经济技术研究院 | Gas insulated metal enclosed neutral point complete equipment |
| CN110752536B (en) * | 2019-09-18 | 2023-11-03 | 国网浙江省电力有限公司经济技术研究院 | Gas-insulated metal-enclosed neutral point complete equipment |
| CN113066646A (en) * | 2021-03-09 | 2021-07-02 | 国网浙江省电力有限公司湖州供电公司 | 110kV transformer neutral point vacuum gap grounding complete equipment |
| CN113066646B (en) * | 2021-03-09 | 2023-09-29 | 国网浙江省电力有限公司湖州供电公司 | Vacuum gap grounding complete equipment for neutral point of 110kV transformer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104991162B (en) | A kind of positioning device and application method of single-phase grounded malfunction in grounded system of low current | |
| CA2772219A1 (en) | Method and apparatus for protecting power systems from extraordinary electromagnetic pulses | |
| CN105931923B (en) | A kind of high voltage DC breaker | |
| Liang et al. | Electrical submersible pump system grounding: Current practice and future trend | |
| CN103441483A (en) | Lightning arrester device | |
| IL211536A (en) | Method and apparatus for protecting power systems from extraordinary electromagnetic pulses | |
| CN107276032A (en) | A kind of transformer neutral point earth protection device | |
| CN203932760U (en) | Isolating switch insulating barrier on a kind of post | |
| CN203871688U (en) | Arc-extinguishing resonance-eliminating cabinet | |
| RU2631859C1 (en) | EARTHING DEVICE FOR ISOLATED AERIAL POWER LINES WITH VOLTAGE OF UP TO 3 kV | |
| CN203951184U (en) | Resistor equipotential bleeder mechanism | |
| CN205610205U (en) | Transformer neutral point earthing protection device | |
| CN202749310U (en) | Replaceable built-in voltage transformer high voltage alternating current dividing circuit breaker | |
| CN101282033A (en) | User demarcation load switch | |
| CN201927445U (en) | High-tension lightning arrester with shield ring | |
| CN204243680U (en) | The combination unit of cross-arm, lightning arrester and disconnector | |
| CN203645104U (en) | Special-purpose grounding wire of low voltage breaker | |
| CN201044232Y (en) | Device for extinguishing arc, extinguishing harmony, selecting line and over-voltage protection | |
| CN206023159U (en) | Pillar spark gap | |
| CN103941165A (en) | GIS equipment testing device and method | |
| CN205389099U (en) | Transformer neutral point clearance ground protecting device | |
| CN201576555U (en) | Current instrument transformer insulating structure | |
| CN205231295U (en) | High voltage insulation protective wire for load switch | |
| CN203931902U (en) | A kind of electrical control isolating switch | |
| CN204497627U (en) | A kind of insulating support for fixing drainage thread |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20171020 |
|
| WD01 | Invention patent application deemed withdrawn after publication |