CN203232841U - Intelligent vacuum circuit breaker configured with independent zero-sequence current transformer - Google Patents
Intelligent vacuum circuit breaker configured with independent zero-sequence current transformer Download PDFInfo
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- CN203232841U CN203232841U CN 201320242960 CN201320242960U CN203232841U CN 203232841 U CN203232841 U CN 203232841U CN 201320242960 CN201320242960 CN 201320242960 CN 201320242960 U CN201320242960 U CN 201320242960U CN 203232841 U CN203232841 U CN 203232841U
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- circuit breaker
- vacuum circuit
- sequence current
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- intelligent
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- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 230000016507 interphase Effects 0.000 abstract 1
- 239000004973 liquid crystal related substance Substances 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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Abstract
The utility model discloses an intelligent vacuum circuit breaker configured with an independent zero-sequence current transformer. The intelligent vacuum circuit breaker configured with the independent zero-sequence current transformer comprises an intelligent vacuum circuit breaker body, the intelligent vacuum circuit breaker body is provided with a breaker, the breaker is respectively connected with current transformers, voltage transformers and the zero-sequence current transformer, one side of the breaker is provided with a control cable conjunction box, and the control cable conjunction box is connected with an intelligent control terminal through an aviation plug and a control cable. The utility model provides the intelligent vacuum circuit breaker capable of automatically removing an inter-phase short circuit fault, automatically removing a single-phase earth fault, and continuously setting constant value.
Description
Technical field
The utility model relates to ZW32 type vacuum circuit-breaker commonly used in the 10KV power distribution network, is specifically related to dispose the ZW32 type intelligent vacuum circuit breaker of independent zero sequence current mutual inductor, by improving its intelligent level, to better meet the intelligent power distribution net to the requirement of switch.
Background technology
ZW32 type vacuum circuit-breaker is a large amount of switchgears that use in the 10KV power distribution network.The modes of many employings configuration " controller shoves " in body at present, by ZW32 type vacuum circuit-breaker, current transformer (being called for short CT), controller shoves, the overcurrent tripping coil constitutes, and can excise phase fault automatically, and its operation principle is: when load side generation phase fault, fault current passes through current transformer, be input to the controller that shoves, the controller that shoves determines the electric current of collection greater than definite value, triggers the overcurrent tripping coil, make switch trip, cutting-off of short-circuit fault.The definite value of controller of shoving is adjusted by toggle switch.
Along with development and development of technology, the especially State Grid Corporation of China of society proposed the target of " intelligent grid ", current equipment has not satisfied instructions for use, because it has the following disadvantages: can not excise single phase ground fault automatically; The fixed value adjusting inconvenience, controller is assemblied in the Switch main body owing to shove, revise definite value and then need to open Switch main body, operate very complicated, all be good fixed value adjusting before taking to dispatch from the factory, be difficult to revise definite value after the use, if especially in use need to change definite value, then at first to have a power failure, more trouble.Definite value can not be adjusted continuously, and definite value is adjusted by toggle switch, and the progression of toggle switch is limited, generally is exactly 0-9, and 10 grades, so definite value can not be continuously.
The utility model content
The purpose of this utility model provides can excise phase fault automatically, excise single phase ground fault automatically, the definite value of can adjusting continuously simultaneously.
In order to achieve the above object, the utility model has following technical scheme:
Dispose the intelligent vacuum circuit breaker of independent zero sequence current mutual inductor, comprise the intelligent vacuum circuit breaker body, described intelligent vacuum circuit breaker body is provided with circuit breaker, this circuit breaker is connected with current transformer, voltage transformer, zero sequence current mutual inductor respectively, one side of described circuit breaker is provided with a control cable straight joint, and this control cable straight joint is connected with control of intelligent terminal by aviation plug and control cable.
Wherein, described zero sequence current mutual inductor is the racetrack structure.
Wherein, described control of intelligent terminal is installed in the position apart from 3 meters of below grounds.
Wherein, described control of intelligent terminal is furnished with the outdoor stainless steel control cabinet that degree of protection reaches IP54 outward.
Owing to taked above technical scheme, advantage of the present utility model is:
1, vacuum circuit-breaker is not in the past considered the identification of single phase ground fault, so can't excise single phase ground fault automatically, the utility model is at the processing of single phase ground fault, independent zero sequence current mutual inductor and control of intelligent terminal have been disposed, not only phase fault can be excised automatically, and single phase ground fault can be excised automatically;
2, vacuum circuit-breaker control and switch one in the past, fixed value adjusting is inconvenient and can not adjust continuously, the scheme that the utility model takes control of intelligent terminal to separate with Switch main body, and control of intelligent terminal employing graphic dot matrix Chinese demonstration liquid crystal make fixed value adjusting convenient and continuous.
Description of drawings
Fig. 1 is the utility model structural front view;
Fig. 2 is the utility model structure side view;
Fig. 3 is this practical type aviation plug and control cable schematic diagram;
Fig. 4 is the utility model control of intelligent terminal schematic diagram;
Fig. 5 is the utility model zero sequence current mutual inductor front view;
Fig. 6 is the utility model zero sequence current mutual inductor end view.
Among the figure: 1, circuit breaker, 2, zero sequence current mutual inductor, 3, current transformer, 4, voltage transformer, 5, control of intelligent terminal, 6, aviation plug and control cable, 7, the control cable straight joint
Embodiment
Below implement to be used for explanation the utility model, but be not used for limiting scope of the present utility model.
As Fig. 1-shown in Figure 6, described in the utility model is ZW32 type vacuum circuit-breaker, comprise: the intelligent vacuum circuit breaker that disposes independent zero sequence current mutual inductor, comprise the intelligent vacuum circuit breaker body, described intelligent vacuum circuit breaker body is provided with circuit breaker, this circuit breaker is connected with current transformer, voltage transformer, zero sequence current mutual inductor respectively, one side of described circuit breaker is provided with a control cable straight joint, and this control cable straight joint is connected with control of intelligent terminal by aviation plug and control cable.
Zero sequence current mutual inductor is the racetrack structure of circumferential.
Voltage transformer adopts the no-load voltage ratio of 10000:220, and power 400VA is used for providing the operating power of switch and the working power of control of intelligent terminal.
Control of intelligent terminal separates with Switch main body, and be installed in the position lower apart from ground, and generally be about 3 meters, signal is by aviation plug and control cable bond, adopt the control module of graphic dot matrix liquid crystal Chinese interface, join the outdoor stainless steel control cabinet that degree of protection reaches IP54 outward.
Operation principle is as follows:
1, the automatic excision of single phase ground fault
The zero sequence overcurrent definite value of single phase ground fault (being called for short I0dz) input control of intelligent terminal.The electric current of zero sequence current mutual inductor induction is very little when load side single phase ground fault does not take place, and is almost 0, and control of intelligent terminal collects this electric current (being called for short I0), compares with zero sequence overcurrent definite value, and I0＜I0dz does not have single phase ground fault thereby judge; When load side generation single phase ground fault, zero sequence current mutual inductor induces bigger zero-sequence current, control of intelligent terminal collects this electric current, compare with zero sequence overcurrent definite value, I0〉I0dz, single phase ground fault has taken place thereby judge, start the tripping relay of circuit breaker, by breaking coil switch is disconnected, automatically failure removal.
2, the automatic excision of phase fault
The overcurrent definite value of phase fault (being called for short Idz) input control of intelligent terminal.The electric current of current transformer induction is the normal duty electric current when load side phase fault does not take place, and control of intelligent terminal collects this electric current (being called for short I), compares with the overcurrent definite value, and I＜Idz does not have phase fault thereby judge; When load side generation phase fault, current transformer induces bigger electric current, control of intelligent terminal collects this electric current, compare with the overcurrent definite value, I〉Idz, phase fault has taken place thereby judge, start the circuit breaker trip relay, make the switch tripping by breaking coil, automatically failure removal.
3, fixed value adjusting
Open the door of control of intelligent terminal control cabinet, by button on the control panel and graphic dot matrix Chinese liquid crystal, can revise definite value easily.The step-length of overcurrent definite value is 0.1A.
When 4, the electrical network primary current is flowed through breaker body, the secondary current voltage signal that zero sequence current mutual inductor, current transformer, voltage transformer are gathered, after control of intelligent terminal is handled, form corresponding electrical measurement automatically controlled signal, finish the multiple function of described circuit breaker, simultaneously its signal can also be used to described circuit breaker is carried out on the spot or the intellectualized operation of remote control, remote measurement, distant news and remote regulating.Provide signals such as current/voltage by described breaker body, handle through described circuit breaker control of intelligent terminal, not only can finish on the spot or the multiple observing and controlling function in a distant place, can also outer join computer management system, its power distribution network is carried out separate unit or many single controls or team control, reach the centralized management to uniline or many distribution lines.
Obviously, above-mentioned example of the present utility model only is for the utility model example clearly is described, and is not to be restriction to execution mode of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here can't give exhaustive to all execution modes.Everyly belong to the row that apparent variation that the technical solution of the utility model extends out or change still are in protection range of the present utility model.
Claims (4)
1. dispose the intelligent vacuum circuit breaker of independent zero sequence current mutual inductor, comprise the intelligent vacuum circuit breaker body, it is characterized in that: described intelligent vacuum circuit breaker body is provided with circuit breaker, this circuit breaker is connected with current transformer, voltage transformer, zero sequence current mutual inductor respectively, one side of described circuit breaker is provided with a control cable straight joint, and this control cable straight joint is connected with control of intelligent terminal by aviation plug and control cable.
2. the intelligent vacuum circuit breaker of putting independent zero sequence current mutual inductor as claimed in claim 1, it is characterized in that: described zero sequence current mutual inductor is the racetrack structure.
3. the intelligent vacuum circuit breaker of putting independent zero sequence current mutual inductor as claimed in claim 1, it is characterized in that: described control of intelligent terminal is installed in the position apart from 3 meters of below grounds.
4. the intelligent vacuum circuit breaker of putting independent zero sequence current mutual inductor as claimed in claim 1, it is characterized in that: described control of intelligent terminal is furnished with the outdoor stainless steel control cabinet that degree of protection reaches IP54 outward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320242960 CN203232841U (en) | 2013-05-08 | 2013-05-08 | Intelligent vacuum circuit breaker configured with independent zero-sequence current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320242960 CN203232841U (en) | 2013-05-08 | 2013-05-08 | Intelligent vacuum circuit breaker configured with independent zero-sequence current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203232841U true CN203232841U (en) | 2013-10-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320242960 Expired - Fee Related CN203232841U (en) | 2013-05-08 | 2013-05-08 | Intelligent vacuum circuit breaker configured with independent zero-sequence current transformer |
Country Status (1)
| Country | Link |
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| CN (1) | CN203232841U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105186692A (en) * | 2015-09-24 | 2015-12-23 | 四川奇通电气成套设备有限公司 | Intelligent high-voltage AC energy management and control device |
| CN105719896A (en) * | 2016-03-28 | 2016-06-29 | 苏刚印 | Side-mounting type high-voltage vacuum circuit breaker |
| CN105762007A (en) * | 2016-03-28 | 2016-07-13 | 苏刚印 | Side-installed high-voltage vacuum circuit breaker |
| CN107884683A (en) * | 2017-12-28 | 2018-04-06 | 国网山东省电力公司高密市供电公司 | Current initial traveling wave detection device and substation outgoing cable fault monitoring method |
-
2013
- 2013-05-08 CN CN 201320242960 patent/CN203232841U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105186692A (en) * | 2015-09-24 | 2015-12-23 | 四川奇通电气成套设备有限公司 | Intelligent high-voltage AC energy management and control device |
| CN105186692B (en) * | 2015-09-24 | 2017-08-25 | 四川奇通电气成套设备有限公司 | Intelligent high-pressure alternating current energy management control device |
| CN105719896A (en) * | 2016-03-28 | 2016-06-29 | 苏刚印 | Side-mounting type high-voltage vacuum circuit breaker |
| CN105762007A (en) * | 2016-03-28 | 2016-07-13 | 苏刚印 | Side-installed high-voltage vacuum circuit breaker |
| CN107884683A (en) * | 2017-12-28 | 2018-04-06 | 国网山东省电力公司高密市供电公司 | Current initial traveling wave detection device and substation outgoing cable fault monitoring method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 071000 Hebei province Baoding North Second Ring Road No. 5699 University Science and Technology Park Building 1, unit 2, Room 202 Patentee after: HEBEI GUOWEN ELECTRIC CO.,LTD. Address before: 071051 Baoding City, new city road, No. 31, No. Patentee before: HEBEI GUOWEN ELECTRICAL EQUIPMENT Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 071000 Hebei province Baoding North Second Ring Road No. 5699 University Science and Technology Park Building 1, unit 2, Room 202 Patentee after: Chinese electrical Limited by Share Ltd. Address before: 071000 Hebei province Baoding North Second Ring Road No. 5699 University Science and Technology Park Building 1, unit 2, Room 202 Patentee before: HEBEI GUOWEN ELECTRIC CO.,LTD. |
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| CP01 | Change in the name or title of a patent holder | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131009 |
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| CF01 | Termination of patent right due to non-payment of annual fee |