CN207215882U - Energy-saving capacitance type potential transformer - Google Patents
Energy-saving capacitance type potential transformer Download PDFInfo
- Publication number
- CN207215882U CN207215882U CN201721277266.6U CN201721277266U CN207215882U CN 207215882 U CN207215882 U CN 207215882U CN 201721277266 U CN201721277266 U CN 201721277266U CN 207215882 U CN207215882 U CN 207215882U
- Authority
- CN
- China
- Prior art keywords
- calutron
- fuel tank
- capacitance type
- energy
- type potential
- 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.)
- Active
Links
Landscapes
- Transformers For Measuring Instruments (AREA)
Abstract
The utility model provides a kind of energy-saving capacitance type potential transformer, including：Primary connection plate, voltage divider capacitors, fuel tank calutron, middle pressure earthed switch, secondary outlet box, oil level inspection hole, fuel outlet valve, earth terminal；Middle pressure earthed switch is mounted in the side of fuel tank calutron, and voltage divider capacitors are mounted in the top of fuel tank calutron, and primary connection plate is mounted in the top of voltage divider capacitors；Fuel outlet valve is arranged on a side bottom of fuel tank calutron, and earth terminal is arranged on the side bottom of fuel tank calutron one, and secondary outlet box is mounted in the side of fuel tank calutron；Oil level inspection hole is arranged on the casing of fuel tank calutron.The utility model has the advantages of precision is high, partial discharge is few, and dielectric loss is low.
Description
Technical field
A kind of voltage transformer is the utility model is related to, especially a kind of energy-saving capacitance type potential transformer.
Background technology
With expanding economy, the electricity capacity of power network increasingly increases.Capacitance type potential transformer is applied primarily to extra-high
Pressure field.
In power system in addition to the conventional harmonic such as electric arc furnaces, frequency converter source, the nonlinear-load such as new energy access, charging pile
All there may be substantial amounts of harmonic wave.To prevent harmonic wave from causing further to influence on power network, harmonics level in power network is carried out accurate
It is necessary link really to monitor and timely administer, and correctly measures the base that harmonic content in power network is monitoring and improvement
Plinth.Therefore capacitance type potential transformer has just fully demonstrated its powerful effect.Capacitance type potential transformer（CVT）It is by connecting
Capacitor partial pressure, then be depressured and isolate through electromagnetic transformer, as a kind of voltage transformer of meter, relay protection etc., electricity
Carrier frequency can also be coupled to power transmission line and be used for long distance communication, distant place measurement, the circuit of selectivity by appearance formula voltage transformer
Carrier current protection, remote control, telex etc..
Therefore capacitance type potential transformer is the effect for meter and measurement.The accuracy measured in extra-high voltage grid
More and more higher is required for the product quality of capacitance type potential transformer.There can not be the defects of any Product Precision and quality.It is existing
There is the structure of capacitance type potential transformer heavier.Floor space is big.Measurement accuracy can also be influenceed by harmonic wave.Therefore often
Generation capacitance type potential transformer oil leak, maintenance is inconvenient, precision is inaccurate and can not filter out the function of mains by harmonics.It is thus this
The product quality of capacitance type potential transformer has seriously affected the safe operation of power network.
The content of the invention
For the deficiencies in the prior art, the utility model provides a kind of energy-saving capacitance type potential transformer, tool
There is the advantages of precision is high, partial discharge is few, and dielectric loss is low, it can effectively be reduced, and measurement data in power network actual motion is inaccurate, and harmonic wave is big
The problems such as causing voltage measurement to be shaken, so as to reduce shelf depreciation, the properties of stable capacitance type potential transformer, ensure electricity
The quality of appearance formula voltage transformer, make capacitance type potential transformer safety, smoothly operation in power network.The utility model uses
Technical scheme be：
A kind of energy-saving capacitance type potential transformer, including：Primary connection plate, voltage divider capacitors, fuel tank calutron,
Middle pressure earthed switch, secondary outlet box, oil level inspection hole, fuel outlet valve, earth terminal；
Middle pressure earthed switch is mounted in the side of fuel tank calutron, and voltage divider capacitors are upper mounted in fuel tank calutron
Portion, primary connection plate are mounted in the top of voltage divider capacitors；Fuel outlet valve is arranged on a side bottom of fuel tank calutron, earth terminal
Installed in the side bottom of fuel tank calutron one, secondary outlet box is mounted in the side of fuel tank calutron；Oil level inspection hole is arranged on
On the casing of fuel tank calutron.
Further, described energy-saving capacitance type potential transformer, in addition to fixed feet；Fixed feet is welded in fuel tank electromagnetism
The bottom of device.
Further, the electrical connection of energy-saving capacitance type potential transformer includes：
An electric capacity C1 termination primary connection plate, another termination capacitor C2 one end；Electric capacity C1 and C2 are respectively voltage divider capacitance
A part for device；Electric capacity C1 and C2 tie point connect one end of middle pressure earthed switch and intermediate transformer T first winding one end；
Another the termination protection device FV and compensation reactor L of intermediate transformer T first windings one end, protection device FV and compensation electricity
Anti- device L other end ground connection；
Electric capacity C2 another termination terminals N, terminals X connect protection device FV and compensation reactor the L other end；
Terminals N and X are used to connect carrier equipment, or pass through connection sheet LP1 short circuits；
Intermediate transformer T has main secondary winding and residual voltage winding；In the resistance in parallel of residual voltage winding both ends
Buddhist nun's device D；
Main secondary winding and residual voltage winding difference connecting secondary outlet box.
Further, electric capacity C1 and C2 is respectively the half of voltage divider capacitors.
Further, protection device FV and compensation reactor the L other end are grounded by a connection sheet LP2.
Further, damper D includes the damping coil and resistance of series connection.
The utility model has the advantage of：
1）Small volume, it is easy for installation.
2）Precision is high, stable performance.
3）Dielectric loss is small.
Brief description of the drawings
Fig. 1 is structural front view of the present utility model.
Fig. 2 is structure left view of the present utility model.
Fig. 3 is electrical schematic diagram of the present utility model.
Embodiment
With reference to specific drawings and examples, the utility model is described in further detail.
As shown in Figure 1 and Figure 2, energy-saving capacitance type potential transformer provided by the utility model, including：Primary connection plate
1st, voltage divider capacitors 2, fuel tank calutron 3, it is middle pressure earthed switch 4, secondary outlet box 5, oil level inspection hole 6, fuel outlet valve 7,
Fixed feet 8, earth terminal 9；
The fixed feet 8 of the energy-saving capacitance type potential transformer is welded in the bottom of fuel tank calutron 3, middle pressure earthed switch
4 are mounted in the side of fuel tank calutron 3, and voltage divider capacitors 2 are mounted in the top of fuel tank calutron 3, and primary connection plate 1 is mounted in
The top of voltage divider capacitors 2, is connected with galvanized bolt；Fuel outlet valve 7 is arranged on a side bottom of fuel tank calutron 3, ground connection
End 9 is arranged on the side bottom of fuel tank calutron 3 one, and secondary outlet box 5 is welded in the side of fuel tank calutron 3；Oil level inspection hole 6
On the casing of fuel tank calutron 3.
Operation principle：The primary connection plate 1 of energy-saving equalizing capacitance formula voltage transformer accesses high-voltage fence, and high-tension electricity leads to
Primary connection plate 1 is crossed, successively partial pressure is carried out subsequently into the inside of voltage divider capacitors 2；Midpoint is taken at the middle part of voltage divider capacitors 2
Voltage is incorporated into inside fuel tank calutron 3, accesses the inside of calutron, then carry out transformation；High voltage is according to specified
Voltage ratio is converted into the secondary low-voltage used for instrument, protective relaying device；Related instrument is connect by secondary outlet box 5
Enter, then measure.
Electrical principle of the present utility model is referring to Fig. 3；
An electric capacity C1 termination primary connection plate 1, another termination capacitor C2 one end；Electric capacity C1 and C2 are respectively voltage divider capacitance
A part for device 2, it is respectively the half of voltage divider capacitors 2 in this example；Electric capacity C1 and C2 tie point connect middle pressure earthed switch 4
One end and intermediate transformer T first winding one end；In use, the other end of middle pressure earthed switch 4 needs to be grounded, central crimping
The closure of ground switch 4, then can measure C1, C2 capacity；Another termination protection device FV of intermediate transformer T first windings and compensation
Reactor L one end, protection device FV and compensation reactor L other end ground connection, are preferably grounded by a connection sheet LP2；
Protection device FV is an arrester；
Electric capacity C2 another termination terminals N, terminals X connect protection device FV and compensation reactor the L other end, preferably
It is grounded by a connection sheet LP2；
When carrier equipment need not be connected, pass through connection sheet LP1 short circuits between terminals N and X；When need connect carrier wave
During device, terminals N and X are used to connect carrier equipment；
Intermediate transformer T has one or more main secondary windings 1a, 1n, 2a, 2n, 3a, 3n；Intermediate transformer T also has
There are residual voltage winding da, a dn；In one damper D of residual voltage winding both ends parallel connection；Damper D includes series connection
Damping coil and resistance.
Main secondary winding and residual voltage winding difference connecting secondary outlet box 5.
Claims (6)
- A kind of 1. energy-saving capacitance type potential transformer, it is characterised in that including：Primary connection plate (1), voltage divider capacitors (2), fuel tank calutron (3), middle pressure earthed switch (4), secondary outlet box (5), oil level inspection hole (6), fuel outlet valve (7), connect Ground terminal (9)；Middle pressure earthed switch (4) is mounted in the side of fuel tank calutron (3), and voltage divider capacitors (2) are mounted in fuel tank calutron (3) top, primary connection plate (1) are mounted in the top of voltage divider capacitors (2)；Fuel outlet valve (7) is arranged on fuel tank calutron (3) a side bottom, earth terminal (9) are arranged on the side bottom of fuel tank calutron (3) one, and secondary outlet box (5) is mounted in fuel tank electricity The side of magnetic device (3)；Oil level inspection hole (6) is arranged on the casing of fuel tank calutron (3).
- 2. energy-saving capacitance type potential transformer as claimed in claim 1, it is characterised in that also including fixed feet (8)；It is fixed Pin (8) is welded in the bottom of fuel tank calutron (3).
- 3. energy-saving capacitance type potential transformer as claimed in claim 1 or 2, it is characterised in thatThe electrical connection of energy-saving capacitance type potential transformer includes：An electric capacity C1 termination primary connection plate (1), another termination capacitor C2 one end；Electric capacity C1 and C2 are respectively voltage divider capacitors (2) a part；Electric capacity C1 and C2 tie point connect one end of middle pressure earthed switch (4) and intermediate transformer T first winding One end；Another the termination protection device FV and compensation reactor L of intermediate transformer T first windings one end, protection device FV and Compensation reactor L other end ground connection；Electric capacity C2 another termination terminals N, terminals X connect protection device FV and compensation reactor the L other end；Terminals N and X are used to connect carrier equipment, or pass through connection sheet LP1 short circuits；Intermediate transformer T has main secondary winding and residual voltage winding；In a residual voltage winding both ends damper in parallel D；Main secondary winding and residual voltage winding difference connecting secondary outlet box (5).
- 4. energy-saving capacitance type potential transformer as claimed in claim 3, it is characterised in thatElectric capacity C1 and C2 are respectively the half of voltage divider capacitors (2).
- 5. energy-saving capacitance type potential transformer as claimed in claim 3, it is characterised in thatProtection device FV and compensation reactor the L other end are grounded by a connection sheet LP2.
- 6. energy-saving capacitance type potential transformer as claimed in claim 3, it is characterised in thatDamper D includes the damping coil and resistance of series connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721277266.6U CN207215882U (en) | 2017-09-29 | 2017-09-29 | Energy-saving capacitance type potential transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721277266.6U CN207215882U (en) | 2017-09-29 | 2017-09-29 | Energy-saving capacitance type potential transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207215882U true CN207215882U (en) | 2018-04-10 |
Family
ID=61820079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721277266.6U Active CN207215882U (en) | 2017-09-29 | 2017-09-29 | Energy-saving capacitance type potential transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207215882U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113759159A (en) * | 2021-09-29 | 2021-12-07 | 国网陕西省电力公司电力科学研究院 | Capacitance voltage transformer with function of outputting capacitance current signal |
-
2017
- 2017-09-29 CN CN201721277266.6U patent/CN207215882U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113759159A (en) * | 2021-09-29 | 2021-12-07 | 国网陕西省电力公司电力科学研究院 | Capacitance voltage transformer with function of outputting capacitance current signal |
| CN113759159B (en) * | 2021-09-29 | 2023-12-29 | 国网陕西省电力公司电力科学研究院 | Capacitive voltage transformer with function of outputting capacitive current signals |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2925370C (en) | A high voltage divider | |
| CN201812668U (en) | Electronic type current and voltage combined mutual inductor of three-phase enclosed GIS (Geographic Information System) | |
| CN201804696U (en) | Ultra-high voltage isoelectric shielding CVT | |
| CN106872752B (en) | A kind of capacitance type potential transformer | |
| CN101819868B (en) | Extra-high-voltage equal potential shielded capacitor voltage transformer | |
| CN201298448Y (en) | A split type voltage mutual inductor | |
| CN108459249B (en) | Extra-high voltage GIL alternating current withstand voltage test device and method with controllable saturation reactance | |
| CN104749408A (en) | Capacitor voltage transformer applied to harmonic measurement | |
| CN201877276U (en) | Gas-insulating electronic voltage transformer | |
| CN103336188A (en) | Current boosting apparatus suitable for GIS equipment | |
| CN207215881U (en) | The energy-saving ferromagnetic unit of capacitance type potential transformer | |
| CN207215882U (en) | Energy-saving capacitance type potential transformer | |
| CN102496447B (en) | Electronic single-phase current voltage transformer for gas insulated metal-closed switchgear | |
| CN204928102U (en) | Net fault monitoring processing apparatus is joined in marriage to distributing type self -adaptation | |
| CN207336610U (en) | A kind of capacitance voltage mutual inductor for carrying current monitoring function | |
| CN201060735Y (en) | Positive and negative 500kV DC current sensor | |
| CN217278639U (en) | Capacitance measuring circuit and electronic equipment | |
| CN208013358U (en) | The extra-high voltage GIL alternating-current voltage resistance test devices of controllable saturation reactance | |
| CN209045313U (en) | Energy-saving capacitance type potential transformer intermediate transformer | |
| CN105225816A (en) | A kind of current transformer with high voltage standard capacitor function | |
| CN207249094U (en) | Voltage transformer integrated measurer | |
| CN201229847Y (en) | Weak output capacitor type voltage mutual inductor | |
| CN207218254U (en) | Extra-high-voltage alternating current engineering assembling shunt capacitor device | |
| CN107275064B (en) | 500kV standard potential transformer | |
| CN104749411A (en) | Capacitor voltage transformer with improved carrier function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |