CN209311542U - Artificial pollution test's high-voltage DC power supply based on bridge rectifier - Google Patents
Artificial pollution test's high-voltage DC power supply based on bridge rectifier Download PDFInfo
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- CN209311542U CN209311542U CN201821474662.2U CN201821474662U CN209311542U CN 209311542 U CN209311542 U CN 209311542U CN 201821474662 U CN201821474662 U CN 201821474662U CN 209311542 U CN209311542 U CN 209311542U
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- pollution test
- artificial pollution
- bridge rectifier
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- 238000012360 testing method Methods 0.000 title claims abstract description 41
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 17
- 239000010703 silicon Substances 0.000 claims abstract description 17
- 230000001681 protective effect Effects 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000003990 capacitor Substances 0.000 description 14
- 239000012212 insulator Substances 0.000 description 8
- 230000005611 electricity Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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Abstract
The utility model discloses a kind of artificial pollution test's high-voltage DC power supply based on bridge rectifier, including AC power source, pressure regulator, transformer, AC potentiometer, full-wave rectification block, filter condenser and the divider being successively electrically connected, the full-wave rectification block is made of high voltage silicon rectifier stack.Artificial pollution test's high-voltage DC power supply of the utility model, electric loop structure is simple, effectively increases the utilization efficiency of AC power source；And equipment manufacturing cost and control complexity are greatly reduced while meeting artificial pollution test to high-voltage DC power supply requirement.
Description
Technical field
The utility model relates to High-Voltage Experimentation Technology fields, and in particular to a kind of artificial pollution test based on bridge rectifier
Use high-voltage DC power supply.
Background technique
Artificial pollution test is manually dirty for carrying out high-voltage testing room insulator direct current with high-voltage dc power supply
The insulator contamination characteristic of dirty test, acquisition is configured for high-voltage testing room filth insulation, it is ensured that electric system is dirty
It is safely operated under dirty moist environment.Insulator artificial pollution test DC power supply need to meet IEC61245 to related test loop
Requirement, requirement to main power circuit is mainly that the relative voltage drop occurred in resistance test is not to be exceeded 10%, relatively electric
It presses through punching and is not to be exceeded 10%, in the case where exporting direct current 500mA, continuing the resistive load electric current of 0.5s time, voltage drop is answered on test product
Less than 5%, voltage overshoot is less than 8%.
Existing insulator artificial pollution test DC power supply electrical schematic diagram is as shown in Figure 1, the AC high voltage inputted
Source is adjusted to required voltage by pressure regulator Ty, and the pilot angle by controlling controllable silicon SCR cuts sinusoidal ac
Wave, the exchange after copped wave pass through the direct current multiplication of voltage after transformer T through being made of high voltage silicon rectifier stack D, times voltage capacitance C and filter capacitor C '
Circuit converts alternating current to direct current.When progress pollution test insulator surface discharges, filter capacitor C both end voltage
Decline carries out quick voltage compensation to capacitor C, relative voltage drop is kept not surpass by quickly adjusting the pilot angle of controllable silicon SCR
Cross 10%.Carried out copped wave and multiplication of voltage in the program before being converted into direct current due to alternating current, the utilization efficiency of AC power source compared with
It is low, and when insulator surface discharges need to increase rapidly the pilot angle of controllable silicon SCR, it can just increase exchange to a certain degree
Electricity utilization rate to keep relative voltage drop be no more than 10%, electric loop structure and control system are complex, manufacture at
This is higher, is unable to satisfy use demand.
Utility model content
Artificial pollution test's high pressure based on bridge rectifier that the technical problem to be solved by the present invention is to provide a kind of
DC power supply, electric loop structure is simple, conducive to the utilization efficiency for improving AC power source, reduces equipment manufacturing cost and circuit control is multiple
Miscellaneous degree.
In order to solve the above-mentioned technical problem, the technical scheme that the utility model is provided is as follows:
A kind of artificial pollution test's high-voltage DC power supply based on bridge rectifier, including the alternating current being successively electrically connected
Source, pressure regulator, transformer, AC potentiometer, full-wave rectification block, filter condenser and divider, the full-wave rectification
Module is made of high voltage silicon rectifier stack.
Earthing switch is also connected between the filter condenser and divider.
The first protective resistance is also connected between the transformer and AC potentiometer.
The second protective resistance is also connected between the filter condenser and earthing switch.
The AC potentiometer uses capacitive divider.
The divider uses resistance divider.
The AC potentiometer is also connected with ac voltage measuring device, and the divider is also surveyed with DC voltage
Amount device is connected.
The pressure regulator includes prime high-tension switch cabinet and rear class high-tension switch cabinet, the prime high-tension switch cabinet and input
End is connected with the AC power source, and the output end of the rear class high-tension switch cabinet is connected with the transformer.
The utility model has the following beneficial effects: artificial pollution test's high-voltage DC power supply of the utility model, electricity
Air circuit structure is simple, effectively increases the utilization efficiency of AC power source；Meeting artificial pollution test to high-voltage DC power supply
It is required that while greatly reduce equipment manufacturing cost and control complexity.
Detailed description of the invention
Fig. 1 is the electrical schematic diagram of artificial pollution test's high-voltage DC power supply in the prior art；
Fig. 2 is the electrical schematic diagram of artificial pollution test's high-voltage DC power supply of the utility model.
Specific embodiment
The utility model is described in further detail in the following with reference to the drawings and specific embodiments, so that those skilled in the art
The utility model may be better understood and can be practiced, but illustrated embodiment is not as the restriction to the utility model.
As shown in Fig. 2, present embodiment discloses a kind of artificial pollution test's high-voltage DC power supply based on bridge rectifier,
Including be successively electrically connected AC power source (not shown), pressure regulator, transformer T, AC potentiometer, full-wave rectification block,
Filter condenser and divider, full-wave rectification block are made of high voltage silicon rectifier stack D.
Wherein, Ty indicates column type voltage regulator, T indication transformer in Fig. 2, and D indicates that high voltage silicon rectifier stack, Ka indicate earthing switch.
Fig. 2 is the circuit diagram of positive polarity voltage output, and bearing product property voltage output only need to be by the reverse phase of high voltage silicon rectifier stack D shown in Fig. 2
?.
AC supply voltage adjusts through pressure regulator and exports alternating current after transformer T is boosted, the exchange after boosting
Electricity is by AC potentiometer, and in order to carry out the measurement of alternating voltage, the alternating current after boosting carries out complete through full-wave rectification block
Wave rectification becomes direct current after filtering capacitors (filter capacitor C) later, and the direct current of output passes through divider,
In order to carry out DC voltage measurement.
Full-wave rectification block is used in the high-voltage DC power supply of the present embodiment, substantially increases DC power source capacity, and can
Effectively reduce voltage fluctuation.
Wherein, AC supply voltage uses 10KV.
In a wherein embodiment, it is also connected with earthing switch Ka between filter condenser and divider, uses
It is grounded after artificial pollution test, after earthing switch Ka closure, the residual charge in the filter capacitor C of filter condenser is logical
It crosses the second protective resistance R2 to be discharged, so that the personal safety of test end staff be effectively ensured.
The first protective resistance R1 is also in series in a wherein embodiment, between transformer T and AC potentiometer, with
The problems such as preventing short circuit and the normal use for influencing transformer T.
Further, full-wave rectification block includes two groups of high voltage silicon rectifier stacks, is defined as first group of high voltage silicon rectifier stack and second group high
Silicon stack is pressed, is divided into two-way via the outlet line after AC potentiometer in Fig. 2, all the way via after first group of high voltage silicon rectifier stack and filtering
Capacitor (filter capacitor C) is connected, and another way is connected via after second group of high voltage silicon rectifier stack with filter condenser (filter capacitor C).
In a wherein embodiment, the second protective resistance R2 is also connected between filter condenser and earthing switch,
The problems such as to prevent short circuit.
In a wherein embodiment, AC potentiometer uses capacitive divider, and AC potentiometer is by concatenated capacitor
C1 and capacitor C2 is constituted.
In a wherein embodiment, divider uses resistance divider, and divider is by concatenated electricity
R3 and resistance R4 is hindered to constitute.
In a wherein embodiment, AC potentiometer is also connected with ac voltage measuring device, hands over to measure
Galvanic electricity pressure, divider are also connected with DC voltage measuring device, to measure the DC voltage of output.
In a wherein embodiment, pressure regulator includes prime high-tension switch cabinet, column type voltage regulator Ty and rear class high pressure
The input terminal of switchgear, prime high-tension switch cabinet is connected with AC power source, and output end connects the end of incoming cables of column type voltage regulator Ty,
The input terminal of the leading-out terminal connection rear class high-tension switch cabinet of column type voltage regulator Ty, the output end and transformer of rear class high-tension switch cabinet
It is connected.
Prime switchgear is made of in parallel switch K1-1 and K1-2, rear class high-tension switch cabinet by switch K2-1 in parallel and
K2-2 composition.
The high-voltage DC power supply of the present embodiment when in use, need to start needed for the DC voltage of output is increased to by pressure regulator
D. C. value, and DC voltage output end is connected with pollution test with insulator.It discharges in pollution test insulator surface
When, the decline of filter capacitor C both end voltage, since the capacity of the capacitor C capacity reserved in design is sufficiently large, and alternating current is through height
Charging supplement is carried out to C after pressure silicon stack D rectification, thus relative voltage drop can be kept to be no more than 10% in resistance test, if insulation
When penetrability power generation and flashover occur for sublist face, the electric current for flowing through capacitor C is more than setting value, then rear class switchgear (K2-1 and K2-
2) it disconnects, DC charging stops.
Above-mentioned high-voltage DC power supply can meet requirement of the IEC61245 to having in direct current pollution test to test loop.It is most
Good applicable elements are as follows: be used as DC experiment voltage≤± 200kV pollution test power supply, namely be suitable for low-voltage-grade dirt
Dirty test.Because of the high voltage silicon rectifier stack lighter weight under ± 200kV voltage class, convenient for exchanging polarity, which can
The spent cost of the high-voltage isulation design being effectively reduced under the low-voltage-grade.
The high-voltage DC power supply of the present embodiment, electric loop structure is simple, and control system is simple, the utilization to AC power source
It is high-efficient, using full-wave rectification block, DC power source capacity is improved, and voltage fluctuation can be effectively reduced；It is artificial dirty meeting
Dirty test greatly reduces equipment manufacturing cost and circuit control complexity while requirement high-voltage DC power supply.
Embodiment described above is only preferred embodiments for fully illustrating the utility model, the utility model
Protection scope it is without being limited thereto.Those skilled in the art made equivalent substitute or change on the basis of the utility model
It changes, both is within the protection scope of the present invention.The protection scope of the utility model is subject to claims.
Claims (8)
1. a kind of artificial pollution test's high-voltage DC power supply based on bridge rectifier, characterized in that including what is be successively electrically connected
AC power source, pressure regulator, transformer, AC potentiometer, full-wave rectification block, filter condenser and divider are described complete
Wave rectification module is made of high voltage silicon rectifier stack.
2. artificial pollution test's high-voltage DC power supply based on bridge rectifier as described in claim 1, characterized in that described
Earthing switch is also connected between filter condenser and divider.
3. artificial pollution test's high-voltage DC power supply based on bridge rectifier as described in claim 1, characterized in that described
The first protective resistance is also connected between transformer and AC potentiometer.
4. artificial pollution test's high-voltage DC power supply based on bridge rectifier as claimed in claim 2, characterized in that described
The second protective resistance is also connected between filter condenser and earthing switch.
5. artificial pollution test's high-voltage DC power supply based on bridge rectifier as described in claim 1, characterized in that described
AC potentiometer uses capacitive divider.
6. artificial pollution test's high-voltage DC power supply based on bridge rectifier as described in claim 1, characterized in that described
Divider uses resistance divider.
7. artificial pollution test's high-voltage DC power supply based on bridge rectifier as described in claim 1, characterized in that described
AC potentiometer is also connected with ac voltage measuring device, and the divider is also connected with DC voltage measuring device
It connects.
8. artificial pollution test's high-voltage DC power supply based on bridge rectifier as described in claim 1, characterized in that described
Pressure regulator includes prime high-tension switch cabinet and rear class high-tension switch cabinet, and the prime high-tension switch cabinet is exchanged with input terminal with described
Power supply is connected, and the output end of the rear class high-tension switch cabinet is connected with the transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821474662.2U CN209311542U (en) | 2018-09-10 | 2018-09-10 | Artificial pollution test's high-voltage DC power supply based on bridge rectifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821474662.2U CN209311542U (en) | 2018-09-10 | 2018-09-10 | Artificial pollution test's high-voltage DC power supply based on bridge rectifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209311542U true CN209311542U (en) | 2019-08-27 |
Family
ID=67668918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821474662.2U Active CN209311542U (en) | 2018-09-10 | 2018-09-10 | Artificial pollution test's high-voltage DC power supply based on bridge rectifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209311542U (en) |
-
2018
- 2018-09-10 CN CN201821474662.2U patent/CN209311542U/en active Active
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