CN203983981U - A kind of Intelligent transformer neutral-point grounding resistance cabinet - Google Patents
A kind of Intelligent transformer neutral-point grounding resistance cabinet Download PDFInfo
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- CN203983981U CN203983981U CN201420407772.2U CN201420407772U CN203983981U CN 203983981 U CN203983981 U CN 203983981U CN 201420407772 U CN201420407772 U CN 201420407772U CN 203983981 U CN203983981 U CN 203983981U
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- grounding resistance
- point grounding
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Abstract
The utility model discloses a kind of Intelligent transformer neutral-point grounding resistance cabinet, comprise the cabinet that stainless steel material is made and be arranged at the some resistor disc groups in described cabinet, in described cabinet, be provided with intelligent controller, described cabinet top is provided with wall bushing, is also provided with circuit breaker summation current transformer in described cabinet.On described cabinet, be reserved with RS485 communication interface.In described cabinet, be provided with overcurrent warning device.In described cabinet, be provided with overtemperature alarm device.In described cabinet, be provided with power down warning device.Described cabinet top is provided with suspension ring.A kind of Intelligent transformer neutral-point grounding resistance cabinet that the utility model provides, solve the excessive problem causing a hidden trouble of transformer and circuit capacity current in running, solved conventional neutral-point grounding resistance cabinet can not with the problem of Automation of Electric Systems device communication, use safety, intelligent degree is high.
Description
Technical field
The utility model relates to a kind of Intelligent transformer neutral-point grounding resistance cabinet.
Background technology
Neutral Grounding Method of Power Distribution System has isolated neutral, Neutral Grounding through Resistance in Electrical and neutral by arc extinction coil grounding conventionally.Various earthing mode differences, occupation mode is also different.Along with the development of national economy, many urban power distribution networks have changed the past taking overhead transmission line as main situation, but taking cable line as main, meanwhile, some novel devices, as closed SF6 switch cubicle, twisted polyethylene cable and the zinc oxide arrester etc. of compact conformation obtain applying more and more widely, this just makes the non-effective earthing mode originally continued to use a bit inapplicable.Therefore, as with neutral ground be set become the emphasis of current powered operation of effective economy.
At present, the existing many power network neutral points of China have adopted the operational mode of resistance grounded.Install after neutral-point grounding resistance cabinet, in the time there is non-metal earthing, be subject to the impact of earth point resistance, while flowing through the current ratio metallic earthing of earth point and neutral point, there is remarkable reduction, meanwhile, perfect phase voltage rising and also significantly reduce, residual voltage value is about the half of Single Phase Metal ground connection.As can be seen here, adopt Neutral Grounding through Resistance in Electrical, temporary overvoltage, elimination arc grounding overvoltage and some resonance overvoltage can reduce single-phase earthing time, and can adopt simple protective relaying device to select rapidly faulty line, excision fault point.
Utility model content
The technical problems to be solved in the utility model is to overcome existing defect, and a kind of Intelligent transformer neutral-point grounding resistance cabinet is provided.
In order to solve the problems of the technologies described above, the utility model provides following technical scheme:
A kind of Intelligent transformer neutral-point grounding resistance cabinet of the utility model, comprise the cabinet that stainless steel material is made and be arranged at the some resistor disc groups in described cabinet, in described cabinet, be provided with intelligent controller, described cabinet top is provided with wall bushing, is also provided with circuit breaker summation current transformer in described cabinet.
Further, on described cabinet, be reserved with RS485 communication interface.
Further, in described cabinet, be provided with overcurrent warning device.
Further, in described cabinet, be provided with overtemperature alarm device.
Further, in described cabinet, be provided with power down warning device.
Further, described cabinet top is provided with suspension ring.
The cabinet material of transformer neutral point earthing resistance cabinet adopts stainless steel, and good looking appearance, corrosion resistance are strong, and degree of protection can reach IP55.According to different service conditions, resistor box is divided into indoor type and outdoor type.Wire leading method can adopt upper entering and lower leaving and under go out under entering etc., while adopting upper entering and lower leaving, wall bushing is equipped with on cabinet top.Cabinet top is equipped with suspension ring and is convenient to lifting.Resistance material can adopt alloy material or nonmetal special material valve block.TB-BNR transformer neutral point earthing resistance cabinet, can with resistance or reactance parallel running, require earth resistance to reduce gradually to provide convenience for electrical network expands gradually.
Traditional earthing resistance cabinet is the protection equipment of pure hardware, and resistor box of the present utility model adds intelligent control part.Controller hardware is taking 32 single-chip microcomputers as core, and software adopts advanced programming language, can show in real time the various states of resistor and transformer neutral point.
Intelligent controller can monitor the temperature of neutral point unsymmetrical current, resistor disc, resistor box in the time that system is normally moved, when single phase ground fault, can record variations in temperature and ground connection number of times the reserved communication interface of earth current size, ground connection time, resistor disc, resistor box, the information detecting, record can be passed to master-control room, make operations staff within the very first time, obtain information.
The beneficial effect that the utility model reaches is:
A kind of Intelligent transformer neutral-point grounding resistance cabinet that the utility model provides, solve the excessive problem causing a hidden trouble of transformer and circuit capacity current in running, solved conventional neutral-point grounding resistance cabinet can not with the problem of Automation of Electric Systems device communication, use safety, intelligent degree is high.
Brief description of the drawings
Accompanying drawing is used to provide further understanding of the present utility model, and forms a part for specification, is used from explanation the utility model with embodiment mono-of the present utility model, does not form restriction of the present utility model.In the accompanying drawings:
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described, should be appreciated that preferred embodiment described herein is only for description and interpretation the utility model, and be not used in restriction the utility model.
As shown in Figure 1, a kind of Intelligent transformer neutral-point grounding resistance cabinet of the utility model, comprise the cabinet 1 that stainless steel material is made and be arranged at the some resistor disc groups 2 in described cabinet 1, in described cabinet 1, be provided with intelligent controller 3, described cabinet 1 top is provided with wall bushing 4, is also provided with circuit breaker 5 summation current transformers 6 in described cabinet 1.On described cabinet 1, be reserved with RS485 communication interface 11.In described cabinet 1, be provided with overcurrent warning device 7.In described cabinet 1, be provided with overtemperature alarm device 8.In described cabinet 1, be provided with power down warning device 9.Described cabinet 1 top is provided with suspension ring 10.
Transformer neutral point earthing resistance cabinet cabinet material adopts stainless steel, and good looking appearance, corrosion resistance are strong, and degree of protection can reach IP55.According to different service conditions, resistor box is divided into indoor type and outdoor type.Wire leading method can adopt upper entering and lower leaving and under go out under entering etc., while adopting upper entering and lower leaving, wall bushing is equipped with on cabinet top.Cabinet top is equipped with suspension ring and is convenient to lifting.Resistance material can adopt alloy material or nonmetal special material valve block.TB-BNR transformer neutral point earthing resistance cabinet, can with resistance or reactance parallel running, require earth resistance to reduce gradually to provide convenience for electrical network expands gradually.
Traditional earthing resistance cabinet is the protection equipment of pure hardware, and resistor box of the present utility model adds intelligent control part.Controller hardware is taking 32 single-chip microcomputers as core, and software adopts advanced programming language, can show in real time the various states of resistor and transformer neutral point.
Intelligent controller can monitor the temperature of neutral point unsymmetrical current, resistor disc, resistor box in the time that system is normally moved, when single phase ground fault, can record variations in temperature and ground connection number of times the reserved communication interface of earth current size, ground connection time, resistor disc, resistor box, the information detecting, record can be passed to master-control room, make operations staff within the very first time, obtain information.
A kind of Intelligent transformer neutral-point grounding resistance cabinet that the utility model provides, has solved excessive the causing a hidden trouble of transformer and circuit capacity current in running; Solve conventional neutral-point grounding resistance cabinet can not with the problem of Automation of Electric Systems device communication; Use safety, intelligent degree is high.
Finally it should be noted that: the foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, although the utility model is had been described in detail with reference to previous embodiment, for a person skilled in the art, its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement.All within spirit of the present utility model and principle, do appoint and amendment, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.
Claims (6)
1. an Intelligent transformer neutral-point grounding resistance cabinet, comprise the cabinet that stainless steel material is made and be arranged at the some resistor disc groups in described cabinet, in described cabinet, be provided with intelligent controller, described cabinet top is provided with wall bushing, is also provided with circuit breaker summation current transformer in described cabinet.
2. a kind of Intelligent transformer neutral-point grounding resistance cabinet according to claim 1, is characterized in that, is reserved with RS485 communication interface on described cabinet.
3. a kind of Intelligent transformer neutral-point grounding resistance cabinet according to claim 1 and 2, is characterized in that, is provided with overcurrent warning device in described cabinet.
4. a kind of Intelligent transformer neutral-point grounding resistance cabinet according to claim 1 and 2, is characterized in that, is provided with overtemperature alarm device in described cabinet.
5. a kind of Intelligent transformer neutral-point grounding resistance cabinet according to claim 1 and 2, is characterized in that, is provided with power down warning device in described cabinet.
6. a kind of Intelligent transformer neutral-point grounding resistance cabinet according to claim 1, is characterized in that, described cabinet top is provided with suspension ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420407772.2U CN203983981U (en) | 2014-07-22 | 2014-07-22 | A kind of Intelligent transformer neutral-point grounding resistance cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420407772.2U CN203983981U (en) | 2014-07-22 | 2014-07-22 | A kind of Intelligent transformer neutral-point grounding resistance cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203983981U true CN203983981U (en) | 2014-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420407772.2U Expired - Fee Related CN203983981U (en) | 2014-07-22 | 2014-07-22 | A kind of Intelligent transformer neutral-point grounding resistance cabinet |
Country Status (1)
| Country | Link |
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| CN (1) | CN203983981U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104578040A (en) * | 2014-12-26 | 2015-04-29 | 苏州市龙源电力科技股份有限公司 | Neutral-point resistance grounding cabinet |
| CN104779604A (en) * | 2015-04-26 | 2015-07-15 | 姬广超 | Neutral ground resistor cabinet |
-
2014
- 2014-07-22 CN CN201420407772.2U patent/CN203983981U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104578040A (en) * | 2014-12-26 | 2015-04-29 | 苏州市龙源电力科技股份有限公司 | Neutral-point resistance grounding cabinet |
| CN104779604A (en) * | 2015-04-26 | 2015-07-15 | 姬广超 | Neutral ground resistor cabinet |
| CN104779604B (en) * | 2015-04-26 | 2018-07-27 | 翔声科技（厦门）有限公司 | A kind of neutral-point grounding resistance cabinet |
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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: 20141203 Termination date: 20210722 |