CN102148490A - Three-phase combined type voltage zero sequence transformer - Google Patents
Three-phase combined type voltage zero sequence transformer Download PDFInfo
- Publication number
- CN102148490A CN102148490A CN2011101092990A CN201110109299A CN102148490A CN 102148490 A CN102148490 A CN 102148490A CN 2011101092990 A CN2011101092990 A CN 2011101092990A CN 201110109299 A CN201110109299 A CN 201110109299A CN 102148490 A CN102148490 A CN 102148490A
- Authority
- CN
- China
- Prior art keywords
- phase
- electric capacity
- zero
- zero sequence
- fuse
- 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.)
- Granted
Links
Images
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention discloses a three-phase combined type voltage zero sequence transformer, which relates to an electrical device, and comprises three-phase high voltage sensor type zero sequence capacitors; one ends of the three phase high voltage sensor type zero sequence capacitors are connected with a high voltage lead; and the other ends are connected with a high voltage fuse; the high voltage fuse is connected with a controller; the high voltage fuse and the controller are connected and then output a three-phase zero sequence capacitor signal to the outside through the controller. The three-phase combined type voltage zero sequence transformer has the beneficial effects that: the three-phase combined type voltage zero sequence transformer can be matched and used with a relay protector or signal device to better realize motions of device elements and realize protection or monitoring when a power system generates a zero sequence earthing current.
Description
Technical field
The present invention 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.
Summary of the invention
Technical problem solved by the invention is to provide a kind of novel structure, the three phase combined voltage zero-sequence transformer that security and stability is higher.
Technical problem solved by the invention 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 present invention 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 present invention, 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 invention has the beneficial effects as follows when being used for electric power system produces the zero sequence earth current that better the action of implement device element realizes protection or monitors when being used with protective relaying device or signalling.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 present invention;
Fig. 2 is the circuit theory diagrams of Fig. 1;
Fig. 3 is the structural representation of second kind of embodiment of the present invention;
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 present invention;
Fig. 7 is the circuit theory diagrams of Fig. 6;
Fig. 8 is the structural representation of the 4th kind of embodiment of the present invention;
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 present invention is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the present invention.
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 invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention 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 1 to 3, 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 |
|---|---|---|---|
| CN201110109299.0A CN102148490B (en) | 2011-04-28 | 2011-04-28 | Three-phase combined type voltage zero sequence transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110109299.0A CN102148490B (en) | 2011-04-28 | 2011-04-28 | Three-phase combined type voltage zero sequence transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102148490A true CN102148490A (en) | 2011-08-10 |
| CN102148490B CN102148490B (en) | 2014-09-17 |
Family
ID=44422559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110109299.0A Expired - Fee Related CN102148490B (en) | 2011-04-28 | 2011-04-28 | Three-phase combined type voltage zero sequence transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102148490B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105609283A (en) * | 2016-01-15 | 2016-05-25 | 胡妍 | Three-phase zero sequence current transformer |
| CN106443131A (en) * | 2016-10-18 | 2017-02-22 | 珠海许继电气有限公司 | Outdoor power-supply and zero-sequence-voltage measuring device |
| CN108802478A (en) * | 2018-08-16 | 2018-11-13 | 江苏靖江互感器股份有限公司 | A kind of capacitive external electric pressure sensor of killer switch |
| CN111060846A (en) * | 2019-12-19 | 2020-04-24 | 深圳供电局有限公司 | CT secondary circuit fault on-line monitoring method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201075334Y (en) * | 2007-06-22 | 2008-06-18 | 珠海许继电气有限公司 | Three-phase zero sequence mutual inductor |
| CN202042879U (en) * | 2011-04-28 | 2011-11-16 | 宏秀电气有限公司 | Three-phase combined voltage zero sequence transformer |
-
2011
- 2011-04-28 CN CN201110109299.0A patent/CN102148490B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201075334Y (en) * | 2007-06-22 | 2008-06-18 | 珠海许继电气有限公司 | Three-phase zero sequence mutual inductor |
| CN202042879U (en) * | 2011-04-28 | 2011-11-16 | 宏秀电气有限公司 | Three-phase combined voltage zero sequence transformer |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105609283A (en) * | 2016-01-15 | 2016-05-25 | 胡妍 | Three-phase zero sequence current transformer |
| CN106443131A (en) * | 2016-10-18 | 2017-02-22 | 珠海许继电气有限公司 | Outdoor power-supply and zero-sequence-voltage measuring device |
| CN108802478A (en) * | 2018-08-16 | 2018-11-13 | 江苏靖江互感器股份有限公司 | A kind of capacitive external electric pressure sensor of killer switch |
| CN108802478B (en) * | 2018-08-16 | 2023-12-22 | 江苏靖江互感器股份有限公司 | Capacitive external voltage sensor for breaker switch |
| CN111060846A (en) * | 2019-12-19 | 2020-04-24 | 深圳供电局有限公司 | CT secondary circuit fault on-line monitoring method |
| CN111060846B (en) * | 2019-12-19 | 2022-03-22 | 深圳供电局有限公司 | CT secondary circuit fault on-line monitoring method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102148490B (en) | 2014-09-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104022494A (en) | Alternating current and direct current coordinating protection method and device for flexible high voltage direct current transmission converter station circuit breaker | |
| CN105449650B (en) | A kind of protection system and method for flexible direct current intelligence transmission and distribution network | |
| CN104221239A (en) | Arrangement for controlling electric power transmission in HVDCc power transmission system | |
| CN102998582A (en) | Detection method of distributing line phase short circuit fault and single phase grounding fault | |
| CN102148490B (en) | Three-phase combined type voltage zero sequence transformer | |
| CN102931640B (en) | Zero-sequence differential protection method of transformer | |
| CN205377272U (en) | Protection system of flexible direct current intelligence transmission & distribution electric wire netting | |
| CN204118714U (en) | The alternating current-direct current mating protection device of flexible direct current transmission converter station circuit breaker | |
| CN104113002B (en) | A kind of high tension cable cross connection grounding system switching device | |
| US8643985B2 (en) | Photovoltaic bipolar to monopolar source circuit converter with frequency selective grounding | |
| CN202042879U (en) | Three-phase combined voltage zero sequence transformer | |
| CN203344867U (en) | Electric vehicle on-cable control box | |
| CN102914683B (en) | A kind of acquisition method of three-phase single cable single-phase-to-ground current | |
| CN208401544U (en) | A kind of over-voltage protector of energy-absorbing cumulative | |
| CN203135401U (en) | AC invasion protection device for DC system of transformer substation | |
| CN102064528A (en) | Transformer neutral point earth protection device | |
| CN203166469U (en) | Phase sequence protective relay | |
| CN201789284U (en) | Interphase overvoltage protector of indirect grounding system | |
| CN202957512U (en) | Measuring cabinet of solid insulating annular network | |
| CN205945049U (en) | Non -maintaining electric pile source defend thunder equipment that fills | |
| CN203289088U (en) | Overvoltage protection device used for DC side of flexible DC power transmission system | |
| CN206340964U (en) | A kind of protection device of series compensation equipment | |
| CN206340963U (en) | A kind of series compensation equipment protection device of parallel-connection structure | |
| CN102118065A (en) | A modular energy storage device for a high voltage electrical power system | |
| CN206340970U (en) | A kind of series compensation equipment protection system of parallel-connection structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 325604 Xinguang Industrial Park, Yueqing, Zhejiang, Liushi Applicant after: Hongxiu Electric Co., Ltd. Address before: 325600 Xinguang Industrial Zone, Liushi Town, Zhejiang, Yueqing Applicant before: Hongxiu Electric Co., Ltd. |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140917 Termination date: 20150428 |
|
| EXPY | Termination of patent right or utility model |