CN206321684U - A kind of three-phase electronic voltage mutual inductor - Google Patents
A kind of three-phase electronic voltage mutual inductor Download PDFInfo
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- CN206321684U CN206321684U CN201621432882.XU CN201621432882U CN206321684U CN 206321684 U CN206321684 U CN 206321684U CN 201621432882 U CN201621432882 U CN 201621432882U CN 206321684 U CN206321684 U CN 206321684U
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- 238000009413 insulation Methods 0.000 description 1
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Abstract
The utility model discloses a kind of three-phase electronic voltage mutual inductor, it is characterised in that：The low pressure tie point (1 9) of A phase resistance partial pressure transformers (1), the low pressure tie point (2 9) of B phase resistance partial pressure transformers (2), the low pressure tie point (3 9) of C phase resistance partial pressure transformers (3) are connected by wire with neutral connection (4) respectively；The input line (5 1) of zero sequence resistance partial pressure transformer (5) is connected with neutral connection (4), and the low pressure tie point (6) of zero sequence resistance partial pressure transformer (5) is connected to ground.
Description
Technical field
Field is equipped the invention belongs to the distribution of power system, is related to a kind of electricity for electric power system alternating current voltage measurement
Minor voltage transformer.
Background technology
At present, conventional voltage transformer mainly has electromagnetic potential transformer and capacitance type potential transformer.Electromagnetic type
Insulation structure for voltage mutual inductor is complicated, and the big weight of volume is high, there is ferromagnetic resonance hidden danger.Capacitance type potential transformer due to
Intermediate transformer and compensation reactor, transient response are poor, and equally exist ferromagnetic resonance hidden danger.Also, the signal of output is
Big voltage signal, is not easy to the fusion of a secondary device.
Therefore, invention is a kind of does not have ferromagnetic resonance hidden danger, and the three-phase electronic of phase voltage and residual voltage can be exported simultaneously
Transformer is significant.
The content of the invention
The present invention relates to a kind of three-phase electronic voltage mutual inductor, it is characterised in that：A phase resistance partial pressure transformers (1)
Low pressure tie point (1-9), the low pressure tie points (2-9) of B phase resistance partial pressure transformers (2), C phase resistance partial pressure transformers (3)
Low pressure tie point (3-9) is connected by wire with neutral connection (4) respectively；The input line of zero sequence resistance partial pressure transformer (5)
(5-1) is connected with center line tie point (4), and the low pressure tie point (6) of zero sequence resistance partial pressure transformer (5) is connected to ground；
Above-mentioned A phase resistances partial pressure transformer (1) is characterised by：A phase high input voltage terminals (1-1), A phase high input voltage lines
(1-2), A phase resistance divider high-voltage arms (1-3), A phase signals electrode (1-4), A phase resistance divider low-voltage arms (1-5), A phases
Low-voltage output cord (1-6) is sequentially connected with composition A phase resistance divider；A phase resistances divider is in the hollow shielding cylinder of A phases (1-7)
Interior and A phase resistance divider axis is overlapped with the axis of the hollow shielding cylinder of A phases (1-7)；A phases low-voltage output cord (1-6)
Low pressure tie point (1-9) with the hollow shielding cylinder of A phases (1-7) in A phase resistance partial pressure transformers (1) is connected；A phase signals output lines
(1-8) is connected through the A phase signals string holes (1-10) on the hollow shielding cylinder of A phases (1-7) with A phase signals electrode (1-4)；
Above-mentioned B phase resistances partial pressure transformer (2) is characterised by：B phase high input voltage terminals (2-1), B phase high input voltage lines
(2-2), B phase resistance divider high-voltage arms (2-3), B phase signals electrode (2-4), B phase resistance divider low-voltage arms (2-5), B phases
Low-voltage output cord (2-6) is sequentially connected with composition B phase resistance divider；B phase resistances divider is in the hollow shielding cylinder of B phases (2-7)
Interior and B phase resistance divider axis is overlapped with the axis of the hollow shielding cylinder of B phases (2-7)；B phases low-voltage output cord (2-6)
Low pressure tie point (2-9) with the hollow shielding cylinder of B phases (2-7) in B phase resistance partial pressure transformers (2) is connected；B phase signals output lines
(2-8) is connected through the B phase signals string holes (2-10) on the hollow shielding cylinder of B phases (2-7) with B phase signals electrode (2-4)；
Above-mentioned C phase resistances partial pressure transformer (3) is characterised by：C phase high input voltage terminals (3-1), C phase high input voltage lines
(3-2), C phase resistance divider high-voltage arms (3-3), C phase signals electrode (3-4), C phase resistance divider low-voltage arms (3-5), C phases
Low-voltage output cord (3-6) is sequentially connected with composition C phase resistance divider；C phase resistances divider is in the hollow shielding cylinder of C phases (3-7)
Interior and C phase resistance divider axis is overlapped with the axis of the hollow shielding cylinder of C phases (3-7)；C phases low-voltage output cord (3-6)
Low pressure tie point (3-9) with the hollow shielding cylinder of C phases (3-7) in C phase resistance partial pressure transformers (3) is connected；C phase signals output lines
(3-8) is connected through the B phase signals string holes (3-10) on the hollow shielding cylinder of B phases (3-7) with B phase signals electrode (3-4)；
Above-mentioned zero sequence resistance partial pressure transformer (5) is characterised by：Input line (the 5- of zero sequence resistance partial pressure transformer (5)
1), zero sequence resistance divider high-voltage arm (5-2), zero sequence signal electrode (5-3), zero sequence resistance divider low-voltage arm (5-4), zero sequence
Low-voltage output cord (5-5) is sequentially connected with composition zero sequence divider resistance；Zero sequence divider resistance is in the hollow shielding cylinder of zero sequence (5-6)
And the axis of zero sequence divider resistance is overlapped with the axis of the hollow shielding cylinder of zero sequence (5-6)；Zero sequence low-voltage output cord (5-5) with
The hollow shielding cylinder of zero sequence (5-6) is connected in the low pressure tie point (6) of zero sequence resistance partial pressure transformer (5)；Zero sequence signal output line
(5-7) is connected through the zero sequence signal hole (5-8) on the hollow shielding cylinder of zero sequence (5-6) with zero sequence signal electrode (5-3)；
Above-mentioned A phase resistances partial pressure transformer (1), B phase resistance partial pressure transformers (2) and C phase resistance partial pressure transformers (3)
It is characterised by：The A phase high input voltage terminals (1-1) of A phase resistance partial pressure transformers (1) and A phase resistance partial pressure transformers (1)
Impedance between low pressure tie point (1-9), B phase high input voltage terminals (2-1) and the B phase resistances of B phase resistance partial pressure transformers (2)
The C phase high voltage input terminals of impedance and C phase resistance partial pressure transformers (3) between the low pressure tie point (2-9) of partial pressure transformer (2)
Sub (3-1) is identical with the impedance between the low pressure tie point (3-9) of C phase resistance partial pressure transformers (3).
This electric resistance partial pressure transformer weakens influence and A, B, C three-phase electricity of external environment condition by setting hollow shielding cylinder
Interfering with each other between resistance partial pressure transformer, improves the environmental suitability and stability of transformer.It is identical by three total impedances
Phase voltage electric resistance partial pressure transformer and residual voltage electric resistance partial pressure transformer be combined, realize A, B, C three-phase phase voltage and zero
Sequence voltage is measured simultaneously, and it is convenient to be provided for secondary device fusion.
Brief description of the drawings
Fig. 1 is the structural representation of three-phase electronic voltage mutual inductor of the present invention.
Embodiment
Illustrate the present invention with reference to specific implementation case.
Case study on implementation three-phase electronic voltage mutual inductor of the present invention is as shown in Figure 1, it is characterised in that：A phase resistance partial pressures are mutual
The low pressure tie point (1-9) of sensor (1), the low pressure tie point (2-9) of B phase resistance partial pressure transformers (2), C phase resistance partial pressures
The low pressure tie point (3-9) of transformer (3) is connected by wire with neutral connection (4) respectively；Zero sequence resistance partial pressure transformer
(5) input line (5-1) is connected with center line tie point (4), low pressure tie point (6) and the ground of zero sequence resistance partial pressure transformer (5)
Connection；
Above-mentioned A phase resistances partial pressure transformer (1) is characterised by：A phase high input voltage terminals (1-1), A phase high input voltage lines
(1-2), A phase resistance divider high-voltage arms (1-3), A phase signals electrode (1-4), A phase resistance divider low-voltage arms (1-5), A phases
Low-voltage output cord (1-6) is sequentially connected with composition A phase resistance divider；A phase resistances divider is in the hollow shielding cylinder of A phases (1-7)
Interior and A phase resistance divider axis is overlapped with the axis of the hollow shielding cylinder of A phases (1-7)；A phases low-voltage output cord (1-6)
Low pressure tie point (1-9) with the hollow shielding cylinder of A phases (1-7) in A phase resistance partial pressure transformers (1) is connected；A phase signals output lines
(1-8) is connected through the A phase signals string holes (1-10) on the hollow shielding cylinder of A phases (1-7) with A phase signals electrode (1-4)；
Above-mentioned B phase resistances partial pressure transformer (2) is characterised by：B phase high input voltage terminals (2-1), B phase high input voltage lines
(2-2), B phase resistance divider high-voltage arms (2-3), B phase signals electrode (2-4), B phase resistance divider low-voltage arms (2-5), B phases
Low-voltage output cord (2-6) is sequentially connected with composition B phase resistance divider；B phase resistances divider is in the hollow shielding cylinder of B phases (2-7)
Interior and B phase resistance divider axis is overlapped with the axis of the hollow shielding cylinder of B phases (2-7)；B phases low-voltage output cord (2-6)
Low pressure tie point (2-9) with the hollow shielding cylinder of B phases (2-7) in B phase resistance partial pressure transformers (2) is connected；B phase signals output lines
(2-8) is connected through the B phase signals string holes (2-10) on the hollow shielding cylinder of B phases (2-7) with B phase signals electrode (2-4)；
Above-mentioned C phase resistances partial pressure transformer (3) is characterised by：C phase high input voltage terminals (3-1), C phase high input voltage lines
(3-2), C phase resistance divider high-voltage arms (3-3), C phase signals electrode (3-4), C phase resistance divider low-voltage arms (3-5), C phases
Low-voltage output cord (3-6) is sequentially connected with composition C phase resistance divider；C phase resistances divider is in the hollow shielding cylinder of C phases (3-7)
Interior and C phase resistance divider axis is overlapped with the axis of the hollow shielding cylinder of C phases (3-7)；C phases low-voltage output cord (3-6)
Low pressure tie point (3-9) with the hollow shielding cylinder of C phases (3-7) in C phase resistance partial pressure transformers (3) is connected；C phase signals output lines
(3-8) is connected through the B phase signals string holes (3-10) on the hollow shielding cylinder of B phases (3-7) with B phase signals electrode (3-4)；
Above-mentioned zero sequence resistance partial pressure transformer (5) is characterised by：Input line (the 5- of zero sequence resistance partial pressure transformer (5)
1), zero sequence resistance divider high-voltage arm (5-2), zero sequence signal electrode (5-3), zero sequence resistance divider low-voltage arm (5-4), zero sequence
Low-voltage output cord (5-5) is sequentially connected with composition zero sequence divider resistance；Zero sequence divider resistance is in the hollow shielding cylinder of zero sequence (5-6)
And the axis of zero sequence divider resistance is overlapped with the axis of the hollow shielding cylinder of zero sequence (5-6)；Zero sequence low-voltage output cord (5-5) with
The hollow shielding cylinder of zero sequence (5-6) is connected in the low pressure tie point (6) of zero sequence resistance partial pressure transformer (5)；Zero sequence signal output line
(5-7) is connected through the zero sequence signal hole (5-8) on the hollow shielding cylinder of zero sequence (5-6) with zero sequence signal electrode (5-3)；
Above-mentioned A phase resistances partial pressure transformer (1), B phase resistance partial pressure transformers (2) and C phase resistance partial pressure transformers (3)
It is characterised by：The A phase high input voltage terminals (1-1) of A phase resistance partial pressure transformers (1) and A phase resistance partial pressure transformers (1)
Impedance between low pressure tie point (1-9), B phase high input voltage terminals (2-1) and the B phase resistances of B phase resistance partial pressure transformers (2)
The C phase high voltage input terminals of impedance and C phase resistance partial pressure transformers (3) between the low pressure tie point (2-9) of partial pressure transformer (2)
Sub (3-1) is identical with the impedance between the low pressure tie point (3-9) of C phase resistance partial pressure transformers (3), is 30M Ω.
It should be appreciated that the case study on implementation is the scope for illustrating the present invention and not to limit the present invention.In addition, should also manage
Solution, after this technology explanation is read, technical staff can make various forms of changes or modification, but these equivalent form of values to the present invention
Equally fall within the application claim limited range.
Claims (6)
1. a kind of three-phase electronic voltage mutual inductor, it is characterised in that：Low pressure tie point (the 1- of A phase resistance partial pressure transformers (1)
9), the low pressure tie point (3- of the low pressure tie point (2-9) of B phase resistances partial pressure transformer (2), C phase resistance partial pressure transformers (3)
9) it is connected respectively by wire with neutral connection (4)；The input line (5-1) of zero sequence resistance partial pressure transformer (5) connects with neutral
Contact (4) is connected, and the low pressure tie point (6) of zero sequence resistance partial pressure transformer (5) is connected to ground.
2. three-phase electronic voltage mutual inductor according to claim 1, it is characterised in that：A phase high input voltage terminals (1-1), A
Phase high input voltage line (1-2), A phase resistance divider high-voltage arms (1-3), A phase signals electrode (1-4), A phase resistance divider low pressure
Arm (1-5), A phases low-voltage output cord (1-6) are sequentially connected with composition A phase resistance divider；It is hollow that A phase resistances divider is in A phases
In shielding cylinder (1-7) and the axis of A phase resistance divider is overlapped with the axis of the hollow shielding cylinder of A phases (1-7)；A phase low pressure
Low pressure tie point (1-9) of the output line (1-6) with the hollow shielding cylinder of A phases (1-7) in A phase resistance partial pressure transformers (1) is connected；A
Phase signals output line (1-8) passes through A phase signals string holes (1-10) and A phase signals electrodes (1- on the hollow shielding cylinder of A phases (1-7)
4) it is connected.
3. three-phase electronic voltage mutual inductor according to claim 1, it is characterised in that：B phase high input voltage terminals (2-1), B
Phase high input voltage line (2-2), B phase resistance divider high-voltage arms (2-3), B phase signals electrode (2-4), B phase resistance divider low pressure
Arm (2-5), B phases low-voltage output cord (2-6) are sequentially connected with composition B phase resistance divider；It is hollow that B phase resistances divider is in B phases
In shielding cylinder (2-7) and the axis of B phase resistance divider is overlapped with the axis of the hollow shielding cylinder of B phases (2-7)；B phase low pressure
Low pressure tie point (2-9) of the output line (2-6) with the hollow shielding cylinder of B phases (2-7) in B phase resistance partial pressure transformers (2) is connected；B
Phase signals output line (2-8) passes through B phase signals string holes (2-10) and B phase signals electrodes (2- on the hollow shielding cylinder of B phases (2-7)
4) it is connected.
4. three-phase electronic voltage mutual inductor according to claim 1, it is characterised in that：C phase high input voltage terminals (3-1), C
Phase high input voltage line (3-2), C phase resistance divider high-voltage arms (3-3), C phase signals electrode (3-4), C phase resistance divider low pressure
Arm (3-5), C phases low-voltage output cord (3-6) are sequentially connected with composition C phase resistance divider；It is hollow that C phase resistances divider is in C phases
In shielding cylinder (3-7) and the axis of C phase resistance divider is overlapped with the axis of the hollow shielding cylinder of C phases (3-7)；C phase low pressure
Low pressure tie point (3-9) of the output line (3-6) with the hollow shielding cylinder of C phases (3-7) in C phase resistance partial pressure transformers (3) is connected；C
Phase signals output line (3-8) passes through B phase signals string holes (3-10) and B phase signals electrodes (3- on the hollow shielding cylinder of B phases (3-7)
4) it is connected.
5. three-phase electronic voltage mutual inductor according to claim 1, it is characterised in that：Zero sequence resistance partial pressure transformer (5)
Input line (5-1), zero sequence resistance divider high-voltage arm (5-2), zero sequence signal electrode (5-3), zero sequence resistance divider low pressure
Arm (5-4), zero sequence low-voltage output cord (5-5) are sequentially connected with composition zero sequence divider resistance；It is hollow that zero sequence divider resistance is in zero sequence
In shielding cylinder (5-6) and the axis of zero sequence divider resistance is overlapped with the axis of the hollow shielding cylinder of zero sequence (5-6)；Zero sequence low pressure
Low pressure tie point (6) of the output line (5-5) with the hollow shielding cylinder of zero sequence (5-6) in zero sequence resistance partial pressure transformer (5) is connected；Zero
Sequential signal output line (5-7) passes through zero sequence signal hole (5-8) and zero sequence signal electrode (5- on the hollow shielding cylinder of zero sequence (5-6)
3) it is connected.
6. three-phase electronic voltage mutual inductor according to claim 1, it is characterised in that：A phase resistance partial pressure transformers (1)
Impedance between A phase high input voltage terminals (1-1) and the low pressure tie point (1-9) of A phase resistance partial pressure transformers (1), B phase resistances
The B phase high input voltage terminals (2-1) of partial pressure transformer (2) and the low pressure tie point (2-9) of B phase resistance partial pressure transformers (2) it
Between impedance and C phase resistance partial pressure transformers (3) C phase high input voltage terminals (3-1) and C phase resistance partial pressure transformers (3)
Impedance between low pressure tie point (3-9) is identical.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201621432882.XU CN206321684U (en) | 2016-12-26 | 2016-12-26 | A kind of three-phase electronic voltage mutual inductor |
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| CN201621432882.XU CN206321684U (en) | 2016-12-26 | 2016-12-26 | A kind of three-phase electronic voltage mutual inductor |
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| CN206321684U true CN206321684U (en) | 2017-07-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106645857A (en) * | 2016-12-26 | 2017-05-10 | 陈永山 | Three-phase electronic voltage transformer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106645857A (en) * | 2016-12-26 | 2017-05-10 | 陈永山 | Three-phase electronic voltage transformer |
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Effective date of registration: 20200728 Address after: 065000 Yaohua Road, Langfang Development Zone, Hebei Province Patentee after: Langfang Electric Power Sensor Technology Co.,Ltd. Address before: 065001 No. 5 Feng Feng Road, Langfang Development Zone, Hebei, China Co-patentee before: Chen Fang Patentee before: Chen Yongshan |