CN202042879U - Three-phase combined voltage zero sequence transformer - Google Patents
Three-phase combined voltage zero sequence transformer Download PDFInfo
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- CN202042879U CN202042879U CN2011201316291U CN201120131629U CN202042879U CN 202042879 U CN202042879 U CN 202042879U CN 2011201316291 U CN2011201316291 U CN 2011201316291U CN 201120131629 U CN201120131629 U CN 201120131629U CN 202042879 U CN202042879 U CN 202042879U
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Abstract
A three-phase combined voltage zero sequence transformer relates to parts of electrical appliances, and comprises three-phase high-voltage sensor type zero sequence capacitors. One end of each phase high-voltage sensor type zero sequence capacitor is connected with a high-voltage lead, the other end of each phase high-voltage sensor type zero sequence capacitor is connected with a high-voltage fuse, the high-voltage fuses are connected with a controller, and the high-voltage fuses after being connected with the controller are used for outputting signals of the three-phase zero sequence capacitors through the controller. The three-phase combined voltage zero sequence transformer has the advantages that when the transformer is used for a power system and generating zero sequence grounding current and used with a relay protection device or a signal device, protection or monitoring for movement of elements of the transformer can be better realized, and accordingly requirements of various protection devices and for various operating modes of the power system (neutral point grounded, neutral point ungrounded, high current grounded, low current grounded and arc suppression coil grounded) are met.
Description
Technical field
The utility model relates to electric component, specifically is a kind of three phase combined voltage zero-sequence transformer.
Background technology
Zero-sequence transformer mainly is to be used for earth leakage protective, a current transformer (C.T) can be respectively adorned in the concrete application of zero-sequence current protection on three-phase line, or allow three-phase conducting wire pass a zero sequence C.T together, also can a zero sequence C.T be installed on neutral line N, utilize these C.T detect three-phase current phasor and, i.e. zero-sequence current Io, IA+IB+IC=IO, when the three-phase load complete equipilibrium that connect on the circuit (no earth fault, and do not consider the leakage current of circuit, electric equipment), IO=0; The three-phase load imbalance that on circuit, is connect, IO=IN then, the zero-sequence current of this moment is unsymmetrical current IN; When mutually earth fault taking place, certainly lead to a single-phase earth fault current Id when a certain, this moment detected zero-sequence current IO=IN+Id, be three-phase imbalance electric current and single-phase-to-ground current vector with.Fuse tube in its high pressure sensor formula zero sequence electric capacity of zero-sequence transformer above the existing market and high-tension fuse and the high-tension fuse is an one, if damage when taking place in one of them part, so whole zero-sequence transformer all needs to change, the cost that causes using will increase, and also is inconvenience very when changing.
The utility model content
The technical problem that the utility model solved is to provide a kind of novel structure, the three phase combined voltage zero-sequence transformer that security and stability is higher.
The technical problem that the utility model solved realizes by the following technical solutions:
A kind of three phase combined voltage zero-sequence transformer, it is characterized in that: comprise three-phase high-voltage sensor type zero sequence electric capacity, one end of described every phase high pressure sensor formula zero sequence electric capacity is linked to each other with a high-voltage conducting wires, the other end connects high-tension fuse, described high-tension fuse links to each other with controller, outwards exports the signal of three-phase zero sequence electric capacity after described high-tension fuse links to each other with controller by controller.
Described high pressure sensor formula zero sequence electric capacity is to be connected with high-tension fuse by connector, be connected by brace between high-tension fuse and the controller, two ends at described high-tension fuse also are provided with the fuse deck, place fuse tube in the described fuse deck, be convenient to the replacing of fuse tube.
Described high-voltage conducting wires is respectively A phase, B phase and C mutually, in the outside of described three-phase high-voltage lead and high pressure sensor formula zero sequence electric capacity insulating barrier is set all, and described insulating barrier adopts ethylene propylene diene rubber to make.
Described high-tension fuse, fuse deck, connector, brace and controller are arranged in the insulation crust of sealing, and the outside that high pressure sensor formula zero sequence electric capacity and high-voltage conducting wires are arranged on insulation crust has constituted three phase combined voltage zero-sequence transformer.
The bottom of described insulation crust is fixed on the mount pad, is convenient to whole installation and removal.
The technical scheme that the utility model also has is, a kind of three phase combined voltage zero-sequence transformer, comprise three-phase high-voltage sensor type zero sequence electric capacity, one end of described every phase high pressure sensor formula zero sequence electric capacity is linked to each other with a high-voltage conducting wires, the other end links to each other with brace, described brace is connected on the high-tension fuse, links to each other with controller by high-tension fuse, outwards exports the signal of three-phase zero sequence electric capacity after described high-tension fuse links to each other with controller by controller.
Described high pressure sensor formula zero sequence electric capacity is to be connected with high-tension fuse by connector, be connected by brace between high-tension fuse and the controller, two ends at described high-tension fuse also are provided with the fuse deck, place fuse tube in the described fuse deck, be convenient to the replacing of fuse tube.
Described high-voltage conducting wires is respectively A phase, B phase and C mutually, in the outside of described three-phase high-voltage lead and high pressure sensor formula zero sequence electric capacity insulating barrier is set all, and described insulating barrier adopts ethylene propylene diene rubber to make.
Described high-tension fuse, fuse deck, connector, brace and controller are arranged in the insulation crust of sealing, and the outside that high pressure sensor formula zero sequence electric capacity and high-voltage conducting wires are arranged on insulation crust has constituted three phase combined voltage zero-sequence transformer.
In the utility model, the technical scheme that also has is, described three-phase high-voltage sensor type zero sequence electric capacity one end and high-voltage conducting wires join, when one end and high-tension fuse join, described high-voltage conducting wires, high pressure sensor formula zero sequence electric capacity and high-tension fuse all are arranged on the outside of insulation crust, the outer setting insulating barrier of described high-voltage conducting wires, high pressure sensor formula zero sequence electric capacity and high-tension fuse, described insulating barrier adopt ethylene propylene diene rubber to make.
The beneficial effects of the utility model are when being used with protective relaying device or signalling when being used for electric power system and producing the zero sequence earth current, and better the action of implement device element realizes protection or monitors.The needs that adapt to various protective devices satisfy the needs with the various operational modes of electric power system (neutral ground, isolated neutral, big electric current ground connection, small current neutral grounding, grounding through arc).
Description of drawings
Fig. 1 is the structural representation of first kind of embodiment of the utility model;
Fig. 2 is the circuit theory diagrams of Fig. 1;
Fig. 3 is the structural representation of second kind of embodiment of the utility model;
Fig. 4 is the circuit theory diagrams of Fig. 3;
Fig. 5 is the side schematic view of Fig. 1 and Fig. 3;
Fig. 6 is the structural representation of the third embodiment of the utility model;
Fig. 7 is the circuit theory diagrams of Fig. 6;
Fig. 8 is the structural representation of the 4th kind of embodiment of the utility model;
Fig. 9 is the circuit theory diagrams of Fig. 8;
Figure 10 is the side schematic view of Fig. 6 and Fig. 8.
1-high-voltage conducting wires, the sensor-type zero sequence electric capacity of 2-high pressure, 3-high-tension fuse, 4-connector, 5-controller, 6-fuse deck, 7-fuse tube, 8-insulating barrier, 9-brace, 10-insulation crust, 11-mount pad among the figure.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
Embodiment one, as Fig. 1, Fig. 2 and shown in Figure 5, a kind of three phase combined voltage zero-sequence transformer, comprise three-phase high-voltage sensor type zero sequence electric capacity 2, one end of every phase high pressure sensor formula zero sequence electric capacity 2 is linked to each other with a high-voltage conducting wires 1, the other end connects two high-tension fuses 3 by connector 4 usefulness mode in parallel, behind two high-tension fuses 3 that connect, link to each other with a high-tension fuse 3 again by brace 9, link to each other with controller 5 then, link to each other the back with controller 5 by the controller 5 outside signals of exporting three-phase zero sequence electric capacity at the high-tension fuse 3 that connects.The two ends of high-tension fuse are equipped with fuse deck 6, place fuse tube 7 in the fuse deck 6, are convenient to the replacing of fuse tube 7 like this.
Wherein high-voltage conducting wires 1 is respectively A phase, B phase and C mutually, one deck all is set in the outside of three-phase high-voltage lead 1 and three-phase high-voltage sensor type zero sequence electric capacity 2 adopts ethylene propylene diene rubber to make insulating barrier 8.Like this in the insulation crust 10 that high-tension fuse 3, fuse deck 6, connector 4, brace 9 and controller 5 all seal, the outside that high pressure sensor formula zero sequence electric capacity 2 and high-voltage conducting wires 1 are installed in insulation crust 10 has constituted three phase combined voltage zero-sequence transformer, the bottom of insulation crust 10 is fixed on the mount pad 11, is convenient to whole installation and removal.
Embodiment two, as Fig. 3, Fig. 4 and shown in Figure 5, a kind of three phase combined voltage zero-sequence transformer, comprise three-phase high-voltage sensor type zero sequence electric capacity 2, one end of every phase high pressure sensor formula zero sequence electric capacity 2 is linked to each other with a high-voltage conducting wires 1, the other end is by electric connection between connector 4 and the brace 9, brace 9 is connected on the high-tension fuse 3, link to each other with controller 5 by high-tension fuse 3, link to each other the back with controller 5 by the controller 5 outside signals of exporting three-phase zero sequence electric capacity at high-tension fuse 3.Fuse deck 6 also is equipped with at two ends at high-tension fuse 3, places fuse tube 7 in the fuse deck 6, is convenient to the replacing of fuse tube 7 like this.
Wherein high-voltage conducting wires 1 is respectively A phase, B phase and C mutually, one deck all is set in the outside of three-phase high-voltage lead 1 and three-phase high-voltage sensor type zero sequence electric capacity 2 adopts ethylene propylene diene rubber to make insulating barrier 8.Like this in the insulation crust 10 that high-tension fuse 3, fuse deck 6, connector 4, brace 9 and controller 5 all seal, the outside that high pressure sensor formula zero sequence electric capacity 2 and high-voltage conducting wires 1 are installed in insulation crust 10 has constituted three phase combined voltage zero-sequence transformer, the bottom of insulation crust 10 is fixed on the mount pad 11, is convenient to whole installation and removal.
Embodiment three, as Fig. 6, Fig. 7 and shown in Figure 10, a kind of three phase combined voltage zero-sequence transformer comprises three-phase high-voltage sensor type zero sequence electric capacity 2, one end of every phase high pressure sensor formula zero sequence electric capacity 2 links to each other with a high-voltage conducting wires 1, and the other end connects high-tension fuse 3.High-voltage conducting wires 1, high pressure sensor formula zero sequence electric capacity 2 and high-tension fuse 3 are installed in the outside of insulation crust 10, and the outside of high-voltage conducting wires 1, high pressure sensor formula zero sequence electric capacity 2 and high-tension fuse 3 all is provided with one deck and adopts ethylene propylene diene rubber to make insulating barrier.Three high-tension fuses 3 are connected with a high-tension fuse 3 by brace 9 by connector 4 and brace 9 electric connections again then, and the high-tension fuse 3 of connection links to each other with controller 5, outwards export the signal of three-phase zero sequence electric capacity by controller 5.
Fuse deck 6 also is equipped with in inside at high-tension fuse 3, places fuse tube 7 in the fuse deck 6, is convenient to the replacing of fuse tube 7 like this.Like this in the insulation crust 10 that fuse deck 6, connector 4, brace 9 and controller 5 all seal, the outside that high pressure sensor formula zero sequence electric capacity 2, high-voltage conducting wires 1 and high-tension fuse 3 are installed in insulation crust 10 has constituted three phase combined voltage zero-sequence transformer, the bottom of insulation crust 10 is fixed on the mount pad 11, is convenient to whole installation and removal.
As Fig. 8, Fig. 9 and shown in Figure 10, a kind of three phase combined voltage zero-sequence transformer comprises three-phase high-voltage sensor type zero sequence electric capacity 2, and an end of every phase high pressure sensor formula zero sequence electric capacity 2 links to each other with a high-voltage conducting wires 1, and the other end connects high-tension fuse 3.High-voltage conducting wires 1, high pressure sensor formula zero sequence electric capacity 2 and high-tension fuse 3 are installed in the outside of insulation crust 10, and the outside of high-voltage conducting wires 1, high pressure sensor formula zero sequence electric capacity 2 and high-tension fuse 3 all is provided with one deck and adopts ethylene propylene diene rubber to make insulating barrier.Three high-tension fuses 3 directly link to each other with controller 5 by brace 9 by connector 4 and brace 9 electric connections then, outwards export the signal of three-phase zero sequence electric capacity by controller 5.
Like this in the insulation crust 10 that connector 4, brace 9 and controller 5 all seal, the outside that high pressure sensor formula zero sequence electric capacity 2, high-voltage conducting wires 1 and high-tension fuse 3 are installed in insulation crust 10 has constituted three phase combined voltage zero-sequence transformer, the bottom of insulation crust 10 is fixed on the mount pad 11, is convenient to whole installation and removal.
More than show and described basic principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (8)
1. three phase combined voltage zero-sequence transformer, it is characterized in that: comprise three-phase high-voltage sensor type zero sequence electric capacity, one end of described every phase high pressure sensor formula zero sequence electric capacity is linked to each other with a high-voltage conducting wires, the other end connects high-tension fuse, described high-tension fuse links to each other with controller, outwards exports the signal of three-phase zero sequence electric capacity after described high-tension fuse links to each other with controller by controller.
2. according to the described three phase combined voltage zero-sequence transformer of claim 1, it is characterized in that: described high pressure sensor formula zero sequence electric capacity is to be connected with high-tension fuse by connector, be connected by brace between high-tension fuse and the controller, two ends at described high-tension fuse also are provided with the fuse deck, place fuse tube in the fuse deck.
3. according to the described three phase combined voltage zero-sequence transformer of claim 1, it is characterized in that: described high-voltage conducting wires is respectively A phase, B phase and C mutually, outside at described three-phase high-voltage lead and high pressure sensor formula zero sequence electric capacity all is provided with insulating barrier, and described insulating barrier adopts ethylene propylene diene rubber to make.
4. according to the described three phase combined voltage zero-sequence transformer of claim 2, it is characterized in that: described high-tension fuse, fuse deck, connector, brace and controller are arranged in the insulation crust of sealing, and the outside that high pressure sensor formula zero sequence electric capacity and high-voltage conducting wires are arranged on insulation crust has constituted three phase combined voltage zero-sequence transformer.
5. according to the described three phase combined voltage zero-sequence transformer of claim 4, it is characterized in that: the bottom of described insulation crust is fixed on the mount pad.
6. according to the described three phase combined voltage zero-sequence transformer of claim 1, it is characterized in that: comprise three-phase high-voltage sensor type zero sequence electric capacity, one end of described every phase high pressure sensor formula zero sequence electric capacity is linked to each other with a high-voltage conducting wires, the other end links to each other with brace, described brace is connected on the high-tension fuse, link to each other with controller by high-tension fuse, after described high-tension fuse links to each other with controller, outwards export the signal of three-phase zero sequence electric capacity by controller.
7. according to the described three phase combined voltage zero-sequence transformer of claim 1, it is characterized in that: described three-phase high-voltage sensor type zero sequence electric capacity one end and high-voltage conducting wires join, when one end and high-tension fuse join, described high-voltage conducting wires, high pressure sensor formula zero sequence electric capacity and high-tension fuse all are arranged on the outside of insulation crust.
8. according to the described three phase combined voltage zero-sequence transformer of claim 7, it is characterized in that: the outer setting insulating barrier of described high-voltage conducting wires, high pressure sensor formula zero sequence electric capacity and high-tension fuse, described insulating barrier adopt ethylene propylene diene rubber to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201316291U CN202042879U (en) | 2011-04-28 | 2011-04-28 | Three-phase combined voltage zero sequence transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201316291U CN202042879U (en) | 2011-04-28 | 2011-04-28 | Three-phase combined voltage zero sequence transformer |
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| CN202042879U true CN202042879U (en) | 2011-11-16 |
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| CN2011201316291U Expired - Fee Related CN202042879U (en) | 2011-04-28 | 2011-04-28 | Three-phase combined voltage zero sequence transformer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102148490A (en) * | 2011-04-28 | 2011-08-10 | 宏秀电气有限公司 | Three-phase combined type voltage zero sequence transformer |
| CN103354160A (en) * | 2013-08-02 | 2013-10-16 | 苏州贝腾特电子科技有限公司 | High-voltage transformer |
-
2011
- 2011-04-28 CN CN2011201316291U patent/CN202042879U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102148490A (en) * | 2011-04-28 | 2011-08-10 | 宏秀电气有限公司 | Three-phase combined type voltage zero sequence transformer |
| CN102148490B (en) * | 2011-04-28 | 2014-09-17 | 宏秀电气有限公司 | Three-phase combined type voltage zero sequence transformer |
| CN103354160A (en) * | 2013-08-02 | 2013-10-16 | 苏州贝腾特电子科技有限公司 | High-voltage transformer |
| CN103354160B (en) * | 2013-08-02 | 2015-11-04 | 国家电网公司 | A kind of high-voltage mutual inductor |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111116 Termination date: 20120428 |