CN104681260A - Zero sequence mutual inductance structure of three-phase breaker - Google Patents
Zero sequence mutual inductance structure of three-phase breaker Download PDFInfo
- Publication number
- CN104681260A CN104681260A CN201510087397.7A CN201510087397A CN104681260A CN 104681260 A CN104681260 A CN 104681260A CN 201510087397 A CN201510087397 A CN 201510087397A CN 104681260 A CN104681260 A CN 104681260A
- Authority
- CN
- China
- Prior art keywords
- zero sequence
- iron core
- zero
- terminals
- sequence
- 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
Landscapes
- Transformers For Measuring Instruments (AREA)
Abstract
The invention relates to a zero sequence mutual inductance structure of a three-phase breaker. An epoxy cylinder on which a green shell composite insulating paper is wound is accommodated in all three mutual inductor shells; the peripheries of the green shell composite insulating paper are provided with measuring iron cores and zero sequence iron cores which are separated by electrical paperboards; measuring coils and zero sequence coils are wound on the peripheries of the measuring iron cores and the zero sequence iron cores respectively and are all wrapped by iron core wrapping insulating paper; first connecting ends are led out from the measuring coils respectively and are used for connecting a three-phase current meter; second connecting ends are led out from the zero sequence coils respectively; the two ends of the second connecting ends are connected in parallel into third connecting ends respectively; the third connecting ends are used for connecting a zero sequence current measuring device. The two ends of the second connecting ends of the zero sequence coils for inducing current of three phases A, B and C are connected in parallel respectively to lead out the third connecting ends; since the zero sequence current is vector sum of the current of the three phases, a measured value of the zero sequence current measuring device connected with the third connecting ends is zero sequence current of a three-phase line.
Description
Technical field
The present invention relates to a kind of zero-sequence mutual inductance structure of three-phase breaker.
Background technology
The zero-sequence mutual inductance structure of traditional three-phase breaker adopts long toroidal core structures, and by the center of A, B, C three-phase main line through long annular core, just have an induced current in the secondary line bag that this duration annular core is wound around, we are referred to as zero-sequence current.The annular core of the zero-sequence transformer of this integral type, due to structure bulky, installs difficulty, and due to the distance between pole longer, the annular core waste of material of zero-sequence transformer is serious, and cost is high.
Summary of the invention
The object of the invention is to the defect overcoming prior art, provide a kind of and adopt split type zero-sequence mutual inductance iron core, assembling is simple, and greatly can reduce the zero-sequence mutual inductance structure of the three-phase breaker of iron core cost.
For achieving the above object, the present invention adopts a kind of like this zero-sequence mutual inductance structure of three-phase breaker, comprise three instrument transformer housings, the epoxy cylinder of the blue or green shell composite-insulating paper of a winding is all held in three described instrument transformer housings, the periphery of described blue or green shell composite-insulating paper arranges by the separated measurement iron core of electrician's cardboard and zero sequence iron core, the periphery of described measurement iron core and described zero sequence iron core is wound around slotted line bag and zero sequence line bag respectively, described slotted line bag and described zero sequence line bag are all wrapped with iron core outsourcing insulating paper outward, the first terminals drawn separately by described slotted line bag, the first described terminals are in order to connect three-phase current table, the second terminals drawn separately by described zero sequence line bag, two of the second described terminals separately and be connected into the 3rd terminals, the 3rd described terminals are in order to connect zero sequence current measurement device.Compared with the prior art, beneficial effect of the present invention is embodied in: measurement iron core and zero sequence iron core are contained in same instrument transformer housing, A, B, C three-phase induction electric current is drawn by the first terminals of slotted line bag, by two of the second terminals of the zero sequence line bag of induction A, B, C three-phase current respectively separately and connect, draw the 3rd terminals, due to the vector that namely zero-sequence current is three-phase current, then namely the measured value of the zero sequence current measurement device be connected with the 3rd terminals is the zero-sequence current of three-phase breaker place circuit.The present invention have structure simple, install easily, the feature that iron core cost is low.
Especially, described measurement iron core and described zero sequence iron core are in being axially arranged side by side.By the setting of above structure, responding to what obtain due to slotted line bag and zero sequence line bag is same three-phase current influence value, ensures that zero-sequence mutual inductance structure is in the consistency of carrying out the three-phase induction electric current before " circuit vector ".
Especially, described measurement iron core and described zero sequence iron core radially surround setting.By the setting of above structure, ensure that the three-phase current influence value that obtains responded to by slotted line bag and the three-phase current influence value indifference obtained responded to by zero sequence line bag.
Especially, described instrument transformer housing is provided with wire hole, and the first described terminals and the second described terminals extend out by described wire hole.First terminals and the second terminals are drawn by wire hole, protects the wire harness of the first terminals and the second terminals neat, be convenient to arrange, and be not subject to the pullling of miscellaneous part, swipe and damage.
Accompanying drawing explanation
Fig. 1 is the external structure of the zero-sequence mutual inductance structure of three-phase breaker of the present invention;
Fig. 2 is the structure chart that the embodiment of the present invention 1 measures iron core and zero sequence iron core;
Fig. 3 is the structure chart that the embodiment of the present invention 2 measures iron core and zero sequence iron core;
Fig. 4 is the combinational circuit winding diagram of the zero-sequence mutual inductance structure of three-phase breaker of the present invention.
Embodiment
As Fig. 1, 2, shown in 4, a kind of zero-sequence mutual inductance structure of three-phase breaker, comprise three instrument transformer housings 1, the epoxy cylinder 14 of the blue or green shell composite-insulating paper 13 of a winding is all held in three instrument transformer housings 1, the periphery of blue or green shell composite-insulating paper 13 arranges by the separated measurement iron core 11 of electrician's cardboard 15 and zero sequence iron core 12, the periphery measuring iron core 11 and zero sequence iron core 12 is wound around slotted line bag 16 and zero sequence line bag respectively, slotted line bag 16 and zero sequence line bag are all wrapped with iron core outsourcing insulating paper 17 outward, slotted line bag 16 draws the first terminals separately, first terminals are in order to connect three-phase current table, the second terminals aS1 drawn separately by zero sequence line bag, aS2, bS1, bS2, cS1, cS2, second terminals aS1, aS2, bS1, bS2, cS1, two of cS2 separately and be connected into the 3rd terminals zS1, zS2, 3rd terminals zS1, zS2 is in order to connect zero sequence current measurement device.Namely the second terminals wherein aS1, bS1, a cS1 and connect, other end bS2, aS2, cS2 of the second terminals also connect.
Measurement iron core 11 and zero sequence iron core 12 are in being axially arranged side by side.
Instrument transformer housing 1 is provided with wire hole 2, and the first terminals and second terminals aS1, aS2, bS1, bS2, cS1, cS2 extend out by wire hole 2.
As shown in Figure 3, embodiment 2 is the another kind of structure of zero-sequence mutual inductance, comprise three instrument transformer housings 1, the epoxy cylinder 14a of a winding blue or green shell composite-insulating paper 13a is all held in three instrument transformer housings 1, the periphery of blue or green shell composite-insulating paper 13a arranges by electrician's cardboard 15a separated measurement iron core 11a and zero sequence iron core 12a, the periphery measuring iron core 11 and zero sequence iron core 12a is wound around slotted line bag 16a and zero sequence line bag respectively, slotted line bag 16a and zero sequence line bag are all wrapped with iron core outsourcing insulating paper 17a outward, slotted line bag 16a draws the first terminals separately, first terminals are in order to connect three-phase current table, as different from Example 1, measurement iron core 11a in embodiment 2 and zero sequence iron core 12a radially surrounds setting.
Claims (4)
1. the zero-sequence mutual inductance structure of a three-phase breaker, comprise three instrument transformer housings, the epoxy cylinder of the blue or green shell composite-insulating paper of a winding is all held in three described instrument transformer housings, it is characterized in that: the periphery of described blue or green shell composite-insulating paper arranges by the separated measurement iron core of electrician's cardboard and zero sequence iron core, the periphery of described measurement iron core and described zero sequence iron core is wound around slotted line bag and zero sequence line bag respectively, described slotted line bag and described zero sequence line bag are all wrapped with iron core outsourcing insulating paper outward, the first terminals drawn separately by described slotted line bag, the first described terminals are in order to connect three-phase current table, the second terminals drawn separately by described zero sequence line bag, two of the second described terminals separately and be connected into the 3rd terminals, the 3rd described terminals are in order to connect zero sequence current measurement device.
2. the zero-sequence mutual inductance structure of three-phase breaker according to claim 1, is characterized in that: described measurement iron core and described zero sequence iron core are in being axially arranged side by side.
3. the zero-sequence mutual inductance structure of three-phase breaker according to claim 1, is characterized in that: described measurement iron core and described zero sequence iron core radially surround setting.
4. the zero-sequence mutual inductance structure of the three-phase breaker according to right 1,2 or 3, is characterized in that: described instrument transformer housing is provided with wire hole, and the first described terminals and the second described terminals extend out by described wire hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510087397.7A CN104681260A (en) | 2015-02-16 | 2015-02-16 | Zero sequence mutual inductance structure of three-phase breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510087397.7A CN104681260A (en) | 2015-02-16 | 2015-02-16 | Zero sequence mutual inductance structure of three-phase breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104681260A true CN104681260A (en) | 2015-06-03 |
Family
ID=53316175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510087397.7A Pending CN104681260A (en) | 2015-02-16 | 2015-02-16 | Zero sequence mutual inductance structure of three-phase breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104681260A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113823495A (en) * | 2021-11-23 | 2021-12-21 | 武汉磐电科技股份有限公司 | Bi-linear package subassembly and high-voltage self-boost standard current transformer |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2577421Y (en) * | 2002-11-05 | 2003-10-01 | 沈阳互感器厂（有限公司） | Dry current transformer |
| JP2010232612A (en) * | 2009-03-30 | 2010-10-14 | Hioki Ee Corp | Split-type current transformer |
| CN201765939U (en) * | 2010-08-23 | 2011-03-16 | 北京恒源利通电力技术有限公司 | Combined type current transformer |
| CN202084420U (en) * | 2011-06-03 | 2011-12-21 | 北京恒源利通电力技术有限公司 | Three-phase integrated current transformer |
| CN203812718U (en) * | 2014-04-09 | 2014-09-03 | 广州南方电力集团电器有限公司 | Three-phase integrated current transformer |
| CN204390893U (en) * | 2015-02-16 | 2015-06-10 | 华建电气有限公司 | The zero-sequence mutual inductance structure of three-phase breaker |
-
2015
- 2015-02-16 CN CN201510087397.7A patent/CN104681260A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2577421Y (en) * | 2002-11-05 | 2003-10-01 | 沈阳互感器厂（有限公司） | Dry current transformer |
| JP2010232612A (en) * | 2009-03-30 | 2010-10-14 | Hioki Ee Corp | Split-type current transformer |
| CN201765939U (en) * | 2010-08-23 | 2011-03-16 | 北京恒源利通电力技术有限公司 | Combined type current transformer |
| CN202084420U (en) * | 2011-06-03 | 2011-12-21 | 北京恒源利通电力技术有限公司 | Three-phase integrated current transformer |
| CN203812718U (en) * | 2014-04-09 | 2014-09-03 | 广州南方电力集团电器有限公司 | Three-phase integrated current transformer |
| CN204390893U (en) * | 2015-02-16 | 2015-06-10 | 华建电气有限公司 | The zero-sequence mutual inductance structure of three-phase breaker |
Non-Patent Citations (2)
| Title |
|---|
| 任致程: "《实用电工电路300例》", 31 March 2002, 机械工业出版社 * |
| 文锋，臧家义: "《电气二次接线识图》", 31 March 2014, 中国电力出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113823495A (en) * | 2021-11-23 | 2021-12-21 | 武汉磐电科技股份有限公司 | Bi-linear package subassembly and high-voltage self-boost standard current transformer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203760297U (en) | Integration structure of transformer and inductor | |
| KR101576814B1 (en) | High voltage wire leading method for stereoscopic wound core open ventilated dry-type transformer | |
| CN204390893U (en) | The zero-sequence mutual inductance structure of three-phase breaker | |
| CN110058071A (en) | Zero sequence current sensor circuit topology and switch pole | |
| CN104681260A (en) | Zero sequence mutual inductance structure of three-phase breaker | |
| CN208225684U (en) | A kind of outgoing line device of power transformer balance winding | |
| CN203481031U (en) | High-voltage transformer | |
| CN202513025U (en) | Extra-high-voltage current transformer with annular shielding box | |
| CN204390894U (en) | Instrument transformer structure | |
| CN103354160A (en) | High-voltage transformer | |
| CN103323722A (en) | Direct current magnetic bias fault simulation structure for transformer | |
| CN103354161B (en) | High-voltage mutual inductor | |
| CN202796410U (en) | Outdoor current transformer | |
| CN205900276U (en) | Three -dimensional solid book iron core has to carry transfers appearance modulation depressor high pressure to draw line knot structure automatically | |
| CN207852447U (en) | current transformer | |
| CN104269261A (en) | Current transformer | |
| CN206516474U (en) | Current transformer | |
| CN204668132U (en) | A kind of ultracrystalline magnetic core zero sequence current mutual inductor | |
| CN208173406U (en) | A kind of coil combination current transformer | |
| CN204348493U (en) | Transformer reel structure-improved | |
| CN202940116U (en) | Concentric type voltage mutual inductor | |
| CN203553317U (en) | Filter | |
| CN203481029U (en) | High voltage mutual inductor | |
| CN103440974A (en) | Multifunctional high-voltage transformer | |
| CN203521134U (en) | Low-leakage-inductance stranded wire transformer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150603 |
|
| WD01 | Invention patent application deemed withdrawn after publication |