CN206321687U - A kind of three-phase resistive-capacitive voltage divider voltage transformer - Google Patents
A kind of three-phase resistive-capacitive voltage divider voltage transformer Download PDFInfo
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- CN206321687U CN206321687U CN201621432881.5U CN201621432881U CN206321687U CN 206321687 U CN206321687 U CN 206321687U CN 201621432881 U CN201621432881 U CN 201621432881U CN 206321687 U CN206321687 U CN 206321687U
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Abstract
The utility model discloses a kind of three-phase resistive-capacitive voltage divider voltage transformer, it is characterised in that：The low pressure tie point (1 9) of A phase resistive-capacitive voltage divider transformers (1), the low pressure tie point (2 9) of B phase resistive-capacitive voltage divider transformers (2), the low pressure tie point (3 9) of C phase resistive-capacitive voltage divider transformers (3) are connected by wire with neutral connection (4) respectively；The input line (5 1) of zero sequence resistive-capacitive voltage divider transformer (5) is connected with neutral connection (4), and the low pressure tie point (6) of zero sequence resistive-capacitive voltage divider 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 resistance for electric power system alternating current voltage measurement
Hold branch pressure 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.Also, the signal of output is big voltage signal, is not easy to one or two times
The fusion of equipment.
Therefore, invention is a kind of does not have ferromagnetic resonance hidden danger, and phase voltage and the three-phase capacitance-resistance point of residual voltage can be exported simultaneously
Medium-voltage potential transformers are significant.
The content of the invention
The present invention relates to a kind of three-phase resistive-capacitive voltage divider voltage transformer, it is characterised in that：A phase resistive-capacitive voltage divider transformers (1)
Low pressure tie point (1-9), the low pressure tie point (2-9) of B phase resistive-capacitive voltage divider transformers (2), C phase resistive-capacitive voltage divider transformers (3)
Low pressure tie point (3-9) be connected respectively by wire with neutral connection (4)；The input of zero sequence resistive-capacitive voltage divider transformer (5)
Line (5-1) is connected with neutral connection (4), and the low pressure tie point (6) of zero sequence resistive-capacitive voltage divider transformer (5) is connected to ground；
Above-mentioned A phases resistive-capacitive voltage divider transformer (1) is characterised by：A phase high input voltage terminals (1-1), A phase high input voltage lines
(1-2), A phase capacitive divider high-voltage arms (1-3), A phase signals electrode (1-4), A phase capacitive divider low-voltage arms (1-5), A phases
Low-voltage output cord (1-6) is sequentially connected with composition A phase capacitive dividers；A phases capacitive divider is in the hollow shielding cylinder of A phases (1-7)
Interior and A phase capacitive dividers 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 resistive-capacitive voltage divider 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)；A phases are low
Piezoresistance (1-11) two ends respectively with A phase signals electrode (1-4) and the low pressure tie point (1-9) of A phase resistive-capacitive voltage divider transformers (1)
Connection；
Above-mentioned B phases resistive-capacitive voltage divider transformer (2) is characterised by：B phase high input voltage terminals (2-1), B phase high input voltage lines
(2-2), B phase capacitive divider high-voltage arms (2-3), B phase signals electrode (2-4), B phase capacitive divider low-voltage arms (2-5), B phases
Low-voltage output cord (2-6) is sequentially connected with composition B phase capacitive dividers；B phases capacitive divider is in the hollow shielding cylinder of B phases (2-7)
Interior and B phase capacitive dividers 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 resistive-capacitive voltage divider 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)；B phases are low
Piezoresistance (2-11) two ends respectively with B phase signals electrode (2-4) and the low pressure tie point (2-9) of B phase resistive-capacitive voltage divider transformers (2)
Connection；
Above-mentioned C phases resistive-capacitive voltage divider transformer (3) is characterised by：C phase high input voltage terminals (3-1), C phase high input voltage lines
(3-2), C phase capacitive divider high-voltage arms (3-3), C phase signals electrode (3-4), C phase capacitive divider low-voltage arms (3-5), C phases
Low-voltage output cord (3-6) is sequentially connected with composition C phase capacitive dividers；C phases capacitive divider is in the hollow shielding cylinder of C phases (3-7)
Interior and C phase capacitive dividers 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 resistive-capacitive voltage divider 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)；C phases are low
Piezoresistance (3-11) two ends respectively with C phase signals electrode (3-4) and the low pressure tie point (3-9) of C phase resistive-capacitive voltage divider transformers (3)
Connection；
Above-mentioned zero sequence resistive-capacitive voltage divider transformer (5) is characterised by：Input line (the 5- of zero sequence resistive-capacitive voltage divider transformer (5)
1), zero sequence capacitive divider high-voltage arm (5-2), zero sequence signal electrode (5-3), zero sequence capacitive 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 resistive-capacitive voltage divider 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)；Zero sequence is low
Piezoresistance (5-9) two ends respectively with zero sequence signal electrode (5-3) and the low pressure tie point (6) of zero sequence resistive-capacitive voltage divider transformer (5)
It is connected；
Above-mentioned A phases resistive-capacitive voltage divider transformer (1), B phase resistive-capacitive voltage divider transformers (2) and C phase resistive-capacitive voltage divider transformers (3)
It is characterised by：The A phase high input voltage terminals (1-1) of A phase resistive-capacitive voltage divider transformers (1) and A phase resistive-capacitive voltage divider transformers (1)
Impedance between low pressure tie point (1-9), B phase high input voltage terminals (2-1) and the B phase capacitance-resistances of B phase resistive-capacitive voltage divider transformers (2)
The C phase high voltage input terminals of impedance and C phase resistive-capacitive voltage divider 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 resistive-capacitive voltage divider transformers (3).
This resistive-capacitive voltage divider transformer weakens influence and the phase resistance of A, B, C tri- of external environment condition by setting hollow shielding cylinder
Interfering with each other between appearance partial pressure transformer, improves the environmental suitability and stability of transformer.It is identical by three total impedances
Phase voltage resistive-capacitive voltage divider transformer and residual voltage resistive-capacitive voltage divider 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 resistive-capacitive voltage divider voltage transformer of the present invention.
Embodiment
Illustrate the present invention with reference to specific implementation case.
Case study on implementation three-phase resistive-capacitive voltage divider voltage transformer of the present invention is as shown in Figure 1, it is characterised in that：A phase resistive-capacitive voltage dividers
The low pressure tie point (1-9) of transformer (1), the low pressure tie point (2-9) of B phase resistive-capacitive voltage divider transformers (2), C phase resistive-capacitive voltage dividers
The low pressure tie point (3-9) of transformer (3) is connected by wire with neutral connection (4) respectively；Zero sequence resistive-capacitive voltage divider transformer
(5) input line (5-1) is connected with neutral connection (4), low pressure tie point (6) and the ground of zero sequence resistive-capacitive voltage divider transformer (5)
Connection；
Above-mentioned A phases resistive-capacitive voltage divider transformer (1) is characterised by：A phase high input voltage terminals (1-1), A phase high input voltage lines
(1-2), A phase capacitive divider high-voltage arms (1-3), A phase signals electrode (1-4), A phase capacitive divider low-voltage arms (1-5), A phases
Low-voltage output cord (1-6) is sequentially connected with composition A phase capacitive dividers；A phases capacitive divider is in the hollow shielding cylinder of A phases (1-7)
Interior and A phase capacitive dividers 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 resistive-capacitive voltage divider 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)；A phases are low
Piezoresistance (1-11) two ends respectively with A phase signals electrode (1-4) and the low pressure tie point (1-9) of A phase resistive-capacitive voltage divider transformers (1)
Connection；
Above-mentioned B phases resistive-capacitive voltage divider transformer (2) is characterised by：B phase high input voltage terminals (2-1), B phase high input voltage lines
(2-2), B phase capacitive divider high-voltage arms (2-3), B phase signals electrode (2-4), B phase capacitive divider low-voltage arms (2-5), B phases
Low-voltage output cord (2-6) is sequentially connected with composition B phase capacitive dividers；B phases capacitive divider is in the hollow shielding cylinder of B phases (2-7)
Interior and B phase capacitive dividers 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 resistive-capacitive voltage divider 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)；B phases are low
Piezoresistance (2-11) two ends respectively with B phase signals electrode (2-4) and the low pressure tie point (2-9) of B phase resistive-capacitive voltage divider transformers (2)
Connection；
Above-mentioned C phases resistive-capacitive voltage divider transformer (3) is characterised by：C phase high input voltage terminals (3-1), C phase high input voltage lines
(3-2), C phase capacitive divider high-voltage arms (3-3), C phase signals electrode (3-4), C phase capacitive divider low-voltage arms (3-5), C phases
Low-voltage output cord (3-6) is sequentially connected with composition C phase capacitive dividers；C phases capacitive divider is in the hollow shielding cylinder of C phases (3-7)
Interior and C phase capacitive dividers 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 resistive-capacitive voltage divider 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)；C phases are low
Piezoresistance (3-11) two ends respectively with C phase signals electrode (3-4) and the low pressure tie point (3-9) of C phase resistive-capacitive voltage divider transformers (3)
Connection；
Above-mentioned zero sequence resistive-capacitive voltage divider transformer (5) is characterised by：Input line (the 5- of zero sequence resistive-capacitive voltage divider transformer (5)
1), zero sequence capacitive divider high-voltage arm (5-2), zero sequence signal electrode (5-3), zero sequence capacitive 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 resistive-capacitive voltage divider 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)；Zero sequence is low
Piezoresistance (5-9) two ends respectively with zero sequence signal electrode (5-3) and the low pressure tie point (6) of zero sequence resistive-capacitive voltage divider transformer (5)
It is connected；
Above-mentioned A phases resistive-capacitive voltage divider transformer (1), B phase resistive-capacitive voltage divider transformers (2) and C phase resistive-capacitive voltage divider transformers (3)
It is characterised by：The A phase high input voltage terminals (1-1) of A phase resistive-capacitive voltage divider transformers (1) and A phase resistive-capacitive voltage divider transformers (1)
Impedance between low pressure tie point (1-9), B phase high input voltage terminals (2-1) and the B phase capacitance-resistances of B phase resistive-capacitive voltage divider transformers (2)
The C phase high voltage input terminals of impedance and C phase resistive-capacitive voltage divider 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 resistive-capacitive voltage divider transformers (3), is 35M 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 resistive-capacitive voltage divider voltage transformer, it is characterised in that：The low pressure tie point of A phase resistive-capacitive voltage divider transformers (1)
The low pressure tie point (2-9) of (1-9), B phase resistive-capacitive voltage divider transformers (2), the low pressure tie point of C phase resistive-capacitive voltage divider transformers (3)
(3-9) is connected by wire with neutral connection (4) respectively；The input line (5-1) of zero sequence resistive-capacitive voltage divider transformer (5) and neutrality
Tie point (4) is connected, and the low pressure tie point (6) of zero sequence resistive-capacitive voltage divider transformer (5) is connected to ground.
2. three-phase resistive-capacitive voltage divider voltage transformer according to claim 1, it is characterised in that：A phase high input voltage terminals (1-
1), A phases high input voltage line (1-2), A phase capacitive divider high-voltage arms (1-3), A phase signals electrode (1-4), A phase capacitive dividers
Low-voltage arm (1-5), A phases low-voltage output cord (1-6) are sequentially connected with composition A phase capacitive dividers；A phases capacitive divider is in A phases
In hollow shielding cylinder (1-7) and the axis of A phase capacitive dividers is overlapped with the axis of the hollow shielding cylinder of A phases (1-7)；A phases
Low pressure tie point (1-9) of the low-voltage output cord (1-6) with the hollow shielding cylinder of A phases (1-7) in A phase resistive-capacitive voltage divider transformers (1) connects
Connect；A phase signals output line (1-8) passes through A phase signals string holes (1-10) and A phase signals electrodes on the hollow shielding cylinder of A phases (1-7)
(1-4) is connected；A phases low resistance (1-11) two ends respectively with A phase signals electrode (1-4) and A phase resistive-capacitive voltage divider transformers (1)
Low pressure tie point (1-9) is connected.
3. three-phase resistive-capacitive voltage divider voltage transformer according to claim 1, it is characterised in that：B phase high input voltage terminals (2-
1), B phases high input voltage line (2-2), B phase capacitive divider high-voltage arms (2-3), B phase signals electrode (2-4), B phase capacitive dividers
Low-voltage arm (2-5), B phases low-voltage output cord (2-6) are sequentially connected with composition B phase capacitive dividers；B phases capacitive divider is in B phases
In hollow shielding cylinder (2-7) and the axis of B phase capacitive dividers is overlapped with the axis of the hollow shielding cylinder of B phases (2-7)；B phases
Low pressure tie point (2-9) of the low-voltage output cord (2-6) with the hollow shielding cylinder of B phases (2-7) in B phase resistive-capacitive voltage divider transformers (2) connects
Connect；B phase signals output line (2-8) passes through B phase signals string holes (2-10) and B phase signals electrodes on the hollow shielding cylinder of B phases (2-7)
(2-4) is connected；B phases low resistance (2-11) two ends respectively with B phase signals electrode (2-4) and B phase resistive-capacitive voltage divider transformers (2)
Low pressure tie point (2-9) is connected.
4. three-phase resistive-capacitive voltage divider voltage transformer according to claim 1, it is characterised in that：C phase high input voltage terminals (3-
1), C phases high input voltage line (3-2), C phase capacitive divider high-voltage arms (3-3), C phase signals electrode (3-4), C phase capacitive dividers
Low-voltage arm (3-5), C phases low-voltage output cord (3-6) are sequentially connected with composition C phase capacitive dividers；C phases capacitive divider is in C phases
In hollow shielding cylinder (3-7) and the axis of C phase capacitive dividers is overlapped with the axis of the hollow shielding cylinder of C phases (3-7)；C phases
Low pressure tie point (3-9) of the low-voltage output cord (3-6) with the hollow shielding cylinder of C phases (3-7) in C phase resistive-capacitive voltage divider transformers (3) connects
Connect；C phase signals output line (3-8) passes through B phase signals string holes (3-10) and B phase signals electrodes on the hollow shielding cylinder of B phases (3-7)
(3-4) is connected；C phases low resistance (3-11) two ends respectively with C phase signals electrode (3-4) and C phase resistive-capacitive voltage divider transformers (3)
Low pressure tie point (3-9) is connected.
5. three-phase resistive-capacitive voltage divider voltage transformer according to claim 1, it is characterised in that：Zero sequence resistive-capacitive voltage divider transformer
(5) input line (5-1), zero sequence capacitive divider high-voltage arm (5-2), zero sequence signal electrode (5-3), zero sequence capacitive divider are low
Pressure arm (5-4), zero sequence low-voltage output cord (5-5) are sequentially connected with composition zero sequence divider resistance；It is empty that zero sequence divider resistance is in zero sequence
In heart 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 is low
Low pressure tie point (6) of the pressure output line (5-5) with the hollow shielding cylinder of zero sequence (5-6) in zero sequence resistive-capacitive voltage divider transformer (5) is connected；
Zero sequence signal output line (5-7) passes through zero sequence signal hole (5-8) and zero sequence signal electrode on the hollow shielding cylinder of zero sequence (5-6)
(5-3) is connected；Zero sequence low resistance (5-9) two ends respectively with zero sequence signal electrode (5-3) and zero sequence resistive-capacitive voltage divider transformer (5)
Low pressure tie point (6) be connected.
6. three-phase resistive-capacitive voltage divider voltage transformer, is characterised by according to claim 1：A phase resistive-capacitive voltage divider transformers (1)
Impedance between A phase high input voltage terminals (1-1) and the low pressure tie point (1-9) of A resistive-capacitive voltage dividers transformer (1), B phases capacitance-resistance point
Between the B phase high input voltage terminals (2-1) and the low pressure tie point (2-9) of B phase resistive-capacitive voltage divider transformers (2) of pressing transformer (2)
Impedance and C phase resistive-capacitive voltage divider transformers (3) C phase high input voltage terminals (3-1) and C phase resistive-capacitive voltage divider transformers (3) it is low
Press the impedance between tie point (3-9) identical.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106771463A (en) * | 2016-12-26 | 2017-05-31 | 陈永山 | A kind of three-phase resistive-capacitive voltage divider voltage transformer |
| CN107843760A (en) * | 2017-10-26 | 2018-03-27 | 武汉三龙天成电力设备有限公司 | A kind of facies tract zero sequence AC voltage sensor of resistance-capacitance differential pressure type three |
| CN110146751A (en) * | 2019-07-01 | 2019-08-20 | 浙江华采科技有限公司 | Power grid voltage detection circuit with residual voltage balancing function |
-
2016
- 2016-12-26 CN CN201621432881.5U patent/CN206321687U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106771463A (en) * | 2016-12-26 | 2017-05-31 | 陈永山 | A kind of three-phase resistive-capacitive voltage divider voltage transformer |
| CN107843760A (en) * | 2017-10-26 | 2018-03-27 | 武汉三龙天成电力设备有限公司 | A kind of facies tract zero sequence AC voltage sensor of resistance-capacitance differential pressure type three |
| CN110146751A (en) * | 2019-07-01 | 2019-08-20 | 浙江华采科技有限公司 | Power grid voltage detection circuit with residual voltage balancing function |
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Effective date of registration: 20200826 Address after: Yaohua Road, Langfang Development Zone, Langfang City, 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 |
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