CN208314098U - The test fixture of simulating grid unusual service condition - Google Patents
The test fixture of simulating grid unusual service condition Download PDFInfo
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- CN208314098U CN208314098U CN201821014914.3U CN201821014914U CN208314098U CN 208314098 U CN208314098 U CN 208314098U CN 201821014914 U CN201821014914 U CN 201821014914U CN 208314098 U CN208314098 U CN 208314098U
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- service condition
- unusual service
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Abstract
The utility model discloses a kind of test fixtures of simulating grid unusual service condition, it includes power supply module, for the unusual service condition of simulating grid unusual service condition circuit occurs and at least one is used to simulate the load of live electricity consumption, the power supply module occurs circuit with the unusual service condition and is connected, so that the power supply module is that circuit power supply occurs for the unusual service condition；Unusual service condition occurs circuit and is connected with the load, provides working power so that circuit occurs for the unusual service condition for the load.The utility model has high-frequency on-fixed ripple fan-out capability, and can be able to effectively detect be worked normally under power grid unusual service condition by electricity measurer.
Description
Technical field
The utility model relates to a kind of test fixtures of simulating grid unusual service condition.
Background technique
Because domestic electrical equipment quality is irregular, equipment access lacks supervision, and especially civilian inexpensive electric appliance can be led
Its power grid is caused abnormal impact occur, it is necessary to invent a kind of test fixture of simulating grid unusual service condition.
The test fixture of existing simulating grid unusual service condition is divided into two classes: one, fall stage body, volume is big, and it is not easily shifted,
And its multiple harmonic operating condition frequency provided is lower, generally within 21 times, whole harmonic amplitude is smaller, it is difficult to reach simulation
The effect of live bad working environments；Two, signal generator adds amplifier, and frequency, waveform can be modulated arbitrarily, but signal strength is insufficient,
Output voltage amplitude is smaller.
Summary of the invention
Technical problem to be solved in the utility model is to overcome the deficiencies of existing technologies, and it is abnormal to provide a kind of simulating grid
The test fixture of operating condition, it has high-frequency on-fixed ripple fan-out capability, can effectively detect by electricity measurer in power grid exception work
It can be worked normally under condition.
In order to solve the above-mentioned technical problem, the technical solution of the utility model is: a kind of survey of simulating grid unusual service condition
Trial work dress, it includes:
Power supply module；
Circuit occurs for the unusual service condition for simulating grid unusual service condition, and the power supply module and the unusual service condition occur
Circuit is connected, so that the power supply module is that circuit power supply occurs for the unusual service condition；
At least one is used to simulate the load of live electricity consumption, and unusual service condition occurs circuit and is connected with the load, with toilet
It states unusual service condition generation circuit and provides working power for the load.
A kind of specific structure of power supply module is further provided, the power supply module includes:
Attaching plug, for being connected with external power supply；
Non-isolation type adjustable transformer S1, is connected with the attaching plug, converts for the voltage to external power supply.
Power supply module described further further includes full-wave rectification route, and the full-wave rectification route and the non-isolation type can
The output end of voltage regulator/transformer S1 is connected.
Further, it is inverse-excitation type switch power-supply that circuit, which occurs, for the unusual service condition.
A kind of specific structure of unusual service condition generation circuit is further provided, the unusual service condition occurs circuit and includes:
High-voltage frequency converter, the voltage input end of the high-voltage frequency converter are connect with the power supply module, the high-pressure frequency-conversion
Device has at least one output winding；
Control device, the control device include switch control chip and the electricity for being connected to power supply module and high-voltage frequency converter
It presses between input terminal, and for controlling the electronic switch whether connected between power supply module and high-voltage frequency converter, the switch control
Coremaking piece is connected with the electronic switch, will pass through the on-off of switch control chip control electronic switch；
Feed circuit, the feed circuit is connected between output winding and switch control chip, so as to switch control core
Piece carries out feedback regulation to electronic switch according to the feedback voltage V FB of output winding.
Further, the electronic switch is metal-oxide-semiconductor V1.
Further for preventing metal-oxide-semiconductor V1 switching moments from generating higher emitting voltage, the power supply to high frequency transformer
Clamp circuit is connected between module and the voltage input end of the high-voltage frequency converter.
Further, the model TOP252PN of the switch control chip.
Further, the load includes adjustable resistance RL1 and adjustable resistance RL2, and there are two defeated for the high-voltage frequency converter tool
Winding out exports winding based on one output winding, another output winding is secondary output winding, and the adjustable resistance RL2 connects
Main output winding, the adjustable resistance RL1 connect secondary output winding.
Using above-mentioned technical proposal, the utility model has the following beneficial effects:
1, external power supply is connected with attaching plug, and the voltage of external power supply is converted through non-isolation type adjustable transformer S1, adopts
Breadboardin scene high pressure outburst surroundings occur with unusual service condition, the on-off of metal-oxide-semiconductor V1 is controlled by TOP252PN, it is non-to control
Whether connected between isolated form adjustable transformer S1 and high frequency transformer, TOP252PN is according to the feedback voltage of high frequency transformer
VFB carries out feedback regulation to metal-oxide-semiconductor V1, and then can effective detect be worked normally under power grid unusual service condition by electricity measurer；
2, the utility model, which also passes through clamp circuit, prevents metal-oxide-semiconductor V1 switching moments from generating higher hair to high frequency transformer
Radio pressure；The utility model is made of some conventional electronic components and some integrated chips, small in size, and it is convenient to operate, easily
It is mobile, it maintains easily；
3, the output intensity of the utility model can cover broader condition range from power supply module and the dual adjustment of load,
Improve the practicability of the utility model；
4, the full-wave rectification back end of line of the power supply module of the utility model cancels filtering component, improves input power
Ripple, interfering frequency and intensity have randomness, more meet the unusual service condition at scene.
Detailed description of the invention
Fig. 1 is the functional block diagram of the test fixture of the simulating grid unusual service condition of the utility model；
Fig. 2 is the circuit diagram of the power supply module of the utility model；
Fig. 3 is the circuit diagram of the inverse-excitation type switch power-supply of the utility model.
Specific embodiment
In order to make the content of the utility model be easier to be clearly understood, below according to specific embodiment and combine attached
Figure, is described in further detail the utility model.
As shown in Figures 1 to 3, a kind of test fixture of simulating grid unusual service condition, which is characterized in that it includes:
Power supply module 1A；
Circuit 2A, the power supply module 1A and the unusual service condition occur for the unusual service condition for simulating grid unusual service condition
Circuit 2A occurs to be connected, so that the power supply module 1A is that circuit 2A power supply occurs for the unusual service condition；
At least one is used to simulate the load 3A of live electricity consumption, and unusual service condition occurs circuit 2A and is connected with the load 3A,
Working power is provided so that circuit 2A occurs for the unusual service condition for the load 3A.
As shown in Fig. 2, the power supply module 1A includes:
Attaching plug 10A, for being connected with external power supply；
Non-isolation type adjustable transformer S1 is connected with the attaching plug 10A, turns for the voltage to external power supply
It changes.In the present embodiment, the attaching plug 10A has tetra- interfaces of UA, UB, UC and UN, compatible three-phase external power supply and list
Phase external power supply；The non-isolation type adjustable transformer S1 can provide the conversion of the multiple voltages such as 57.7V, 100V and 220V, meet
A variety of power supply units, and compatible overseas particular power source requirement.
As shown in Fig. 2, the power supply module 1A further includes full-wave rectification route 4A, the full-wave rectification route 4A with it is described
The output end of non-isolation type adjustable transformer S1 is connected.Specifically, the full-wave rectification route 4A is whole using double diode all-wave
The mode of stream, to solve the problems, such as that single diode reverse voltage is insufficient after high input voltage, diode used includes diode VD1
~diode VD16 provides VHH power supply after rectification, to improve ripple effect, rectification rear end eliminates filter capacitor and afterflow electricity
Hold.
As shown in figure 3, it is inverse-excitation type switch power-supply that circuit 2A, which occurs, for the unusual service condition.
As shown in figure 3, the unusual service condition generation circuit 2A includes:
High-voltage frequency converter 5A, the voltage input end of the high-voltage frequency converter 5A are connect with the power supply module 1A, the height
Voltage frequency changer 5A has at least one output winding；
Control device, the control device include switch control chip and are connected to power supply module 1A and high-voltage frequency converter 5A
Voltage input end between, and for controlling the electronic switch whether connected between power supply module 1A and high-voltage frequency converter 5A, institute
It states switch control chip to be connected with the electronic switch, will pass through the on-off of switch control chip control electronic switch；
Feed circuit 6A, the feed circuit 6A is connected between output winding and switch control chip, to switch control
Coremaking piece carries out feedback regulation to electronic switch according to the feedback voltage V FB of output winding.In the present embodiment, the feedback electricity
Road 6A uses a reference source N2 primary side feedback, and is current-limiting resistance with resistance R11, it is ensured that optocoupler E1 and a reference source N2 will not overcurrent damage
It is bad.The model AZ431 of a reference source N2.
As shown in figure 3, the electronic switch is metal-oxide-semiconductor V1.
As shown in figure 3, metal-oxide-semiconductor V1 switching moments generate higher emitting voltage to high frequency transformer in order to prevent, it is described
Clamp circuit 7A is connected between power supply module 1A and the voltage input end of the high-voltage frequency converter 5A.Specifically, in metal-oxide-semiconductor V1
Switching moments, the voltage of the voltage input end of high-voltage frequency converter 5A return to the voltage output of power supply module 1A by clamp circuit 7A
End.In the present embodiment, the clamp circuit 7A includes diode VD18, resistance R7, resistance R8 and capacitor C1, diode VD18
Anode be connected with the voltage input end of the high-voltage frequency converter 5A, the diode VD18 and by resistance R7, resistance R8 and electricity
The one end for holding the parallel circuit that C1 is formed in parallel is connected, and the other end of the parallel circuit and the voltage of the power supply module 1A are defeated
Outlet is connected.
As shown in figure 3, the model TOP252PN of the switch control chip.
As shown in figure 3, the load 3A includes adjustable resistance RL1 and adjustable resistance RL2, the high-voltage frequency converter 5A has
Two output windings export winding 8A based on one output winding, another output winding is secondary output winding 9A, described adjustable
Resistance RL2 meets main output winding 8A, and the adjustable resistance RL1 meets secondary output winding 9A.In the present embodiment, it is described it is main output around
The diode VD21 being sequentially connected in series, inductance L1, inductance L2 and adjustable resistance RL2 are connected on group 8A, wherein main output winding 8A
On be connected with the capacitor C8 and capacitor being in parallel respectively with the series circuit being made of inductance L1, inductance L2 and RL2 adjustable resistance
The voltage of C9, the main output winding 8A are stablized through diode VD21 halfwave rectifier by capacitor C8 and capacitor C9 filtering output
Feedback voltage V FB, feedback voltage V FB filters DM EMI through inductance L1, and inductance L2 filters common mode interference, exports stable 48V electricity
Pressure connects adjustable resistance RL2, to simulate electric vehicle charging load 3A；A pin of the secondary output winding 9A is connected with two
Pole pipe VD20, be connected between the cathode of diode VD20 and another pin of secondary output winding 9A capacitor C5 in parallel,
Capacitor C6 and adjustable resistance RL1, the voltage of pair output winding 9A pass through capacitor C5 and capacitor C6 through diode VD20 halfwave rectifier
Filtering exports stable 5V power supply, adjustable resistance RL1 is connected, with analogue mobile phone charge power supply.
The working principle of the utility model is as follows:
External power supply is connected with attaching plug 10A, and the voltage of external power supply is converted through non-isolation type adjustable transformer S1, adopts
Circuit 2A occurs with unusual service condition and simulates live high pressure outburst surroundings, controls the on-off of metal-oxide-semiconductor V1, by TOP252PN with control
Whether connected between non-isolation type adjustable transformer S1 and high frequency transformer 5A, TOP252PN is according to the feedback of high frequency transformer 5A
Voltage VFB carries out feedback regulation to metal-oxide-semiconductor V1, and then can effectively detect normal work under power grid unusual service condition by electricity measurer
Make；The utility model, which also passes through clamp circuit 7A, prevents metal-oxide-semiconductor V1 switching moments from generating higher transmitting to high frequency transformer 5A
Voltage；The utility model is made of some conventional electronic components and some integrated chips, small in size, operates convenient, Yi Yi
It is dynamic, it maintains easily；The output intensity of the utility model can cover broader operating condition from power supply module 1A and the load dual adjustment of 3A
Range improves the practicability of the utility model；Cancel the full-wave rectification rear end route 4A of the power supply module 1A of the utility model
Component is filtered, ripple, interfering frequency and the intensity of input power are improved, there is randomness, more meets the abnormal work at scene
Condition.
Particular embodiments described above, to the utility model solve the technical issues of, technical scheme and beneficial effects into
It has gone further description, it should be understood that the foregoing is merely specific embodiment of the utility model, and has not had to
In limitation the utility model, within the spirit and principle of the utility model, any modification, equivalent substitution and improvement done
Deng should be included within the scope of protection of this utility model.
Claims (9)
1. a kind of test fixture of simulating grid unusual service condition, which is characterized in that it includes:
Power supply module (1A)；
Circuit (2A) occurs for the unusual service condition for simulating grid unusual service condition, the power supply module (1A) and the unusual service condition
Circuit (2A) occurs to be connected, so that the power supply module (1A) is that circuit (2A) power supply occurs for the unusual service condition；
At least one is used to simulate the load (3A) of live electricity consumption, and circuit (2A) and described load (3A) phase occur for unusual service condition
It even, is that the load (3A) provides working power so that circuit (2A) occurs for the unusual service condition.
2. the test fixture of simulating grid unusual service condition according to claim 1, which is characterized in that the power supply module
(1A) includes:
Attaching plug (10A), for being connected with external power supply；
Non-isolation type adjustable transformer S1 is connected with the attaching plug (10A), turns for the voltage to external power supply
It changes.
3. the test fixture of simulating grid unusual service condition according to claim 2, it is characterised in that: the power supply module
(1A) further includes full-wave rectification route (4A), and the full-wave rectification route (4A) is defeated with the non-isolation type adjustable transformer S1's
Outlet is connected.
4. the test fixture of simulating grid unusual service condition according to claim 1, it is characterised in that: the unusual service condition hair
Raw circuit (2A) is inverse-excitation type switch power-supply.
5. the test fixture of simulating grid unusual service condition according to claim 4, it is characterised in that: the unusual service condition hair
Raw circuit (2A) includes:
The voltage input end of high-voltage frequency converter (5A), the high-voltage frequency converter (5A) is connect with the power supply module (1A), described
High-voltage frequency converter (5A) has at least one output winding；
Control device, the control device include switch control chip and are connected to power supply module (1A) and high-voltage frequency converter (5A)
Voltage input end between, and for the electronic cutting whether connected between power supply module (1A) and high-voltage frequency converter (5A) to be controlled
It closes, the switch control chip is connected with the electronic switch, will pass through the on-off of switch control chip control electronic switch；
Feed circuit (6A), the feed circuit (6A) are connected between output winding and switch control chip, to switch control
Coremaking piece carries out feedback regulation to electronic switch according to the feedback voltage V FB of output winding.
6. the test fixture of simulating grid unusual service condition according to claim 5, it is characterised in that: the electronic switch is
Metal-oxide-semiconductor V1.
7. the test fixture of simulating grid unusual service condition according to claim 6, it is characterised in that: the power supply module
Clamp circuit (7A) is connected between (1A) and the voltage input end of the high-voltage frequency converter (5A).
8. the test fixture of simulating grid unusual service condition according to claim 5, it is characterised in that: the switch control core
The model TOP252PN of piece.
9. the test fixture of simulating grid unusual service condition according to claim 5, it is characterised in that: load (3A) packet
Adjustable resistance RL1 and adjustable resistance RL2 are included, high-voltage frequency converter (5A) tool is there are two winding, an output winding is exported
Main output winding (8A), another output winding is secondary output winding (9A), and the adjustable resistance RL2 connects main output winding
(8A), the adjustable resistance RL1 connect secondary output winding (9A).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821014914.3U CN208314098U (en) | 2018-06-29 | 2018-06-29 | The test fixture of simulating grid unusual service condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821014914.3U CN208314098U (en) | 2018-06-29 | 2018-06-29 | The test fixture of simulating grid unusual service condition |
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| Publication Number | Publication Date |
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| CN208314098U true CN208314098U (en) | 2019-01-01 |
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ID=64717118
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821014914.3U Active CN208314098U (en) | 2018-06-29 | 2018-06-29 | The test fixture of simulating grid unusual service condition |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110208586A (en) * | 2019-05-15 | 2019-09-06 | 广州供电局有限公司 | Multiplexing electric abnormality analog circuit and multiplexing electric abnormality analog machine |
-
2018
- 2018-06-29 CN CN201821014914.3U patent/CN208314098U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110208586A (en) * | 2019-05-15 | 2019-09-06 | 广州供电局有限公司 | Multiplexing electric abnormality analog circuit and multiplexing electric abnormality analog machine |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 213000 Xianlu Road, Liyang City, Changzhou City, Jiangsu Province Patentee after: Jiangsu Huapeng Intelligent Instrument Technology Co., Ltd. Address before: 213000 Xianlu Road, Liyang City, Changzhou City, Jiangsu Province Patentee before: Liyang Huapeng Electric Power Instrument Co., Ltd. |
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| CP01 | Change in the name or title of a patent holder |