CN217766813U - Ferromagnetic resonance tester control system - Google Patents
Ferromagnetic resonance tester control system Download PDFInfo
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- CN217766813U CN217766813U CN202221789536.2U CN202221789536U CN217766813U CN 217766813 U CN217766813 U CN 217766813U CN 202221789536 U CN202221789536 U CN 202221789536U CN 217766813 U CN217766813 U CN 217766813U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Abstract
A control system of a ferromagnetic resonance tester belongs to the technical field of test instruments and meters, and comprises a short circuit box unit and a console unit, wherein the short circuit box unit is connected with the console unit; the short circuit box unit comprises a power supply input module, a power supply monitoring mutual inductor, an isolation mutual inductor I, a tested transformer, an isolation mutual inductor II, a current mutual inductor and a short circuit current module; the console unit comprises an oscilloscope and a control module. The utility model discloses control system not only is used for the capacitive voltage transformer ferroresonance performance test, also can be used for the test transformer proruption short-circuit test, tests secondary voltage's output waveform, and whether analysis test result tests its ferroresonance qualified, has effectively guaranteed the operation of electric power system safe and reliable.
Description
Technical Field
The utility model belongs to the technical field of test instrument, concretely relates to ferromagnetic resonance test appearance control system.
Background
Inductance and capacitance elements such as a transformer, a voltage transformer, a compensation capacitor and the like are arranged in a power system, and when a switch is operated or a fault occurs, if the parameters of the inductance and capacitance elements are matched within a certain range, a ferromagnetic resonance phenomenon is generated under the excitation action of an external power supply.
The ferromagnetic resonance is easy to cause over-current and over-voltage, so that great damage is brought to the safe and stable operation of the power system, even faults such as lightning arrester explosion, transformer burnout and the like are caused, and casualties are possibly caused.
Therefore, it is necessary to perform experimental testing on the ferroresonance of the component. At present, ferromagnetic resonance test platform and control system thereof on the market are various, also respectively have a difference in experimental test mode, function, precision and effect, along with the continuous promotion of electric power system technique to and the high requirement to electric power system detection technique, need constantly change and promote experimental detection level to better guarantee electric power system safe and reliable's operation.
SUMMERY OF THE UTILITY MODEL
In order to guarantee the operation of electric power system safe and reliable, the utility model provides a ferroresonance tester control system not only is used for Capacitive Voltage Transformer (CVT) ferroresonance performance test, also can be used for testing the unexpected short circuit test of transformer. Under the working state of the CVT, short circuit is carried out on the secondary terminal for a short time, the CVT is enabled to generate sudden change, the output waveform of the secondary voltage is tested, the test result is analyzed, whether the ferromagnetic resonance of the secondary voltage is qualified or not is tested, and the safe and reliable operation of the power system is effectively guaranteed. The specific technical scheme is as follows:
a control system of a ferromagnetic resonance tester comprises a short circuit box unit and a console unit, wherein the short circuit box unit is connected with the console unit; the short circuit box unit comprises a power input module 1, a power monitoring transformer 2, an isolation transformer I3, a tested transformer 4, an isolation transformer II 5, a current transformer 6 and a short circuit current module 10; the console unit comprises an oscilloscope 8 and a control module 9; one line of the power input module 1 is sequentially connected with a power monitoring transformer 2 and an isolation transformer I3 in series; the other line of the power input module 1 is connected with a tested transformer 4; the tested transformer 4 is divided into two branches, one branch is connected with an isolation transformer II 5, and the other branch is connected with a current transformer 6; the isolation transformer I3, the isolation transformer II 5 and the current transformer 6 are connected with an oscilloscope 8; the control module 9 is connected with the short-circuit current module 10;
the short circuit box unit is provided with an interface 7, and the isolation transformer I3, the isolation transformer II 5 and the current transformer 6 are connected with an oscilloscope 8 through the interface 7.
In the above technical solution, the interface 7 is a 5-core aviation plug.
In the above technical scheme, the oscilloscope 8 is provided with a 5-core aviation plug, and the interface 7 is connected with the 5-core aviation plug of the oscilloscope 8 through a control line.
In the above technical solution, the short-circuit current module 10 is provided with a 2-core aviation plug, a short-circuit relay and an indicator light; the control module 9 is provided with a 2-core aviation plug and a time relay, and the 2-core aviation plug of the short-circuit current module 10 is connected with the 2-core aviation plug of the control module 9 through a signal wire; the control module 9 is used for controlling the pull-in of the short-circuit relay of the short-circuit current module 10, and the time relay is used for setting the pull-in time of the short-circuit relay of the short-circuit current module 10; the control module 9 is used for starting control signal input and controlling the indication lamp of the short-circuit current module 10 to prompt.
In the above technical solution, the control module 9 further includes a test button, a primary voltage meter and an air switch.
In the above technical solution, the power input module 1 provides an adjustable power supply for the power monitoring transformer 2 and the tested transformer 4.
In the technical scheme, the output voltage of the power supply monitoring mutual inductor 2 passes through the isolation mutual inductor I3 and then is connected with the first channel of the oscilloscope 8 through the interface 7 to serve as a primary voltage.
In the technical scheme, the output voltage of the tested transformer 4 passes through the isolation transformer II 5 and then is connected with the second channel of the oscilloscope 8 through the interface 7 to be used as the secondary voltage.
In the technical scheme, the output voltage of the tested transformer 4 is connected with the current transformer 6 to output short-circuit current, and is connected with the third channel of the oscilloscope 8 through the interface 7 to be used as secondary current.
In the above technical solution, the oscilloscope 8 displays waveforms of the primary voltage, the secondary voltage, and the secondary current.
In the above technical solution, the connection is a circuit connection.
The test method comprises the following steps: the voltage of the power input module 1 is adjusted as required, the control module 9 is started, the air switch of the control module 9 is turned on during testing, and when the operation process is abnormal, the air switch automatic tripping protection device is not damaged; when a test button of the control module 9 is pressed down, starting control signal input, closing a short-circuit relay of the short-circuit current module 10, prompting by an indicator lamp, and immediately collecting test waveforms by an oscilloscope; setting the closing time of the short circuit relay through a time relay; the primary voltmeter of the control module 9 displays the primary voltage, so that the observation is convenient, the whole operation process is simple, and the display is visual. And carrying out a test, filling the data into the data list after the test is finished, adjusting the voltage of the power input module 1, and testing other test points.
The utility model discloses a ferromagnetic resonance tester control system compares with prior art, and beneficial effect is:
1. the utility model discloses a ferroresonance tester control system not only can be used for Capacitive Voltage Transformer (CVT) ferroresonance performance test, also can be used for testing the unexpected short circuit test of transformer. In the working state of the CVT, short circuit is carried out on the secondary terminal for a short time (0.1 second), so that the CVT generates sudden change, the output waveform of the secondary voltage is tested, the test result is analyzed, whether the ferromagnetic resonance is qualified or not is tested, the detection modes are various, and the test result is accurate.
2. The utility model discloses a ferromagnetic resonance test appearance control system comprises short circuit box unit and control cabinet unit two parts, and short circuit box unit is arranged in and is tested mutual-inductor department, is used for producing the necessary short circuit operation of test, and the control cabinet unit is provided with oscilloscope, is used for gathering analysis test data, and the collection analysis accords with the testing requirement to save the test result to the USB flash disk convenience look over and print convenient and fast on the computer.
3. The utility model discloses power input module 1 of control system provides adjustable power for power monitoring mutual inductor 2 and measured transformer 4; after the output voltage of the power supply monitoring transformer 2 passes through the isolation transformer I3, the output voltage is connected with a first channel of an oscilloscope 8 through an interface 7 to be used as a primary voltage; the output voltage of the tested transformer 4 passes through an isolation transformer II 5 and then is connected with a second channel of an oscilloscope 8 through an interface 7 to be used as a secondary voltage; the output voltage of the tested transformer 4 is simultaneously connected with the current transformer 6 to output short-circuit current, and is connected with a third channel of the oscilloscope 8 through the interface 7 to be used as secondary current; the oscilloscope 8 displays the waveforms of the primary voltage, the secondary voltage and the secondary current; the control module 9 controls the short-circuit relay to be closed, the wave recording device collects test waveforms, a time relay is arranged in the wave recording device, the closing time of the short-circuit relay is set, ferromagnetic resonance is generally 0.1s, a sudden short-circuit test is generally 1s, and the maximum value can be set to be 9.99s; short-circuit current module 10 start control signal input to the pilot lamp suggestion, the utility model discloses control system simple structure can accurately test whether its ferroresonance is qualified, has effectively guaranteed the operation of electric power system safe and reliable.
4. The utility model discloses control system adjusts power input module 1 voltage as required, starts control module 9, opens control module 9's air switch during the experiment, and when the operation process is unusual, air switch automatic tripping protection equipment does not damage; when a test button of the control module 9 is pressed down, starting control signal input, closing a short-circuit relay of the short-circuit current module 10, prompting by an indicator lamp, and immediately acquiring a test waveform by an oscilloscope; setting the closing time of the short circuit relay through a time relay; the primary voltmeter of the control module 9 displays primary voltage, observation is convenient, the whole operation process is simple, and display is visual.
Drawings
Fig. 1 is the utility model relates to a ferroresonance tester control system's schematic diagram, wherein: the device comprises a power input module, a power monitoring transformer, a 3 isolation transformer I, a 4 tested transformer, a 5 isolation transformer II, a 6 current transformer, a 7 interface, an 8 oscilloscope, a 9 control module and a 10 short-circuit current module.
Fig. 2 is a circuit diagram of the control system of the ferroresonance tester of the present invention.
Fig. 3 is the utility model discloses a ferromagnetic resonance tester control system's short circuit box unit circuit diagram.
Fig. 4 is a circuit diagram of a console unit of a control system of a ferroresonance tester of the present invention.
Fig. 5 is the utility model discloses a ferromagnetic resonance tester control system's short circuit box unit panel picture.
Fig. 6 is a photograph of a console unit panel of a ferroresonance tester control system according to the present invention.
Detailed Description
The present invention will be further described with reference to the following embodiments and the accompanying fig. 1-6, but the present invention is not limited to these embodiments.
Example 1
A ferromagnetic resonance tester control system is disclosed, as shown in figures 1-4, the control system comprises a short circuit box unit and a console unit, the short circuit box unit is connected with the console unit; the short circuit box unit comprises a power input module 1, a power monitoring transformer 2, an isolation transformer I3, a tested transformer 4, an isolation transformer II 5, a current transformer 6, an interface 7 and a short circuit current module 10; the console unit comprises an oscilloscope 8 and a control module 9; one line of the power input module 1 is sequentially connected with a power monitoring transformer 2 and an isolation transformer I3 in series; the other line of the power input module 1 is connected with a tested transformer 4; the tested transformer 4 is divided into two branches, one branch is isolated with the transformer II 5, and the other branch is connected with the current transformer 6; the isolation transformer I3, the isolation transformer II 5 and the current transformer 6 are connected with an oscilloscope 8 through control lines of an interface 7; wherein, interface 7 is 5 core aviation plugs, and oscilloscope 8 is provided with 5 core aviation plugs.
The short-circuit current module 10 of the embodiment is provided with a 2-core aviation plug, a short-circuit relay and an indicator light; the control module 9 is provided with a 2-core aviation plug, a time relay, a test button, a primary voltmeter and an air switch; the 2-core aviation plug of the short-circuit current module 10 is connected with the 2-core aviation plug of the control module 9 through a signal wire; the control module 9 is used for controlling the pull-in of the short-circuit relay of the short-circuit current module 10, and the time relay is used for setting the pull-in time of the short-circuit relay of the short-circuit current module 10; the control module 9 is used for starting control signal input and controlling the indication lamp of the short-circuit current module 10 to prompt.
The power input module 1 provides an adjustable power supply for the power monitoring mutual inductor 2 and the tested transformer 4; after the output voltage of the power supply monitoring transformer 2 passes through the isolation transformer I3, the output voltage is connected with a first channel of an oscilloscope 8 through an interface 7 to be used as a primary voltage; the output voltage of the tested transformer 4 passes through an isolation transformer II 5 and then is connected with a second channel of an oscilloscope 8 through an interface 7 to be used as a secondary voltage; the output voltage of the tested transformer 4 is simultaneously connected with the current transformer 6 to output short-circuit current, and is connected with a third channel of the oscilloscope 8 through the interface 7 to be used as secondary current; the oscilloscope 8 displays the waveforms of the primary voltage, the secondary voltage and the secondary current; the control module 9 controls the short-circuit relay to be attracted, the wave recording device collects test waveforms, the control module 9 is internally provided with a time relay, attraction time of the short-circuit relay is set, ferromagnetic resonance is generally 0.1s, a burst short-circuit test is generally 1s, and the maximum value can be set to be 9.99s.
The voltage of the power input module 1 is adjusted as required, the control module 9 is started, the air switch of the control module 9 is turned on during testing, and when the operation process is abnormal, the air switch automatic tripping protection device is not damaged; when a test button of the control module 9 is pressed down, starting control signal input, closing a short-circuit relay of the short-circuit current module 10, prompting by an indicator lamp, and immediately acquiring a test waveform by an oscilloscope; setting the closing time of the short circuit relay through a time relay; the primary voltmeter of the control module 9 displays primary voltage, observation is convenient, the whole operation process is simple, and display is visual. And carrying out a test, filling the data into the data list after the test is finished, adjusting the voltage of the power input module 1, and testing other test points.
The control system of the ferromagnetic resonance tester of the embodiment is used for controlling the SZCST-4 ferromagnetic resonance tester. The technical indexes of the system are as follows: a working power supply: rated voltage of power supply: AC 220V +/-10%; rated frequency of power supply: 50Hz; instrument measurement range and precision: primary voltage: inputting: AC 0-200V; and (3) outputting: AC 0-20V; secondary voltage: inputting: AC 0-200V; and (3) outputting: AC 0-20V; secondary current: inputting: AC 0-200A; and (3) outputting: AC 0-10V; accuracy: 0.5 percent; the working environment is as follows: ambient temperature: 0 to +40 ℃; relative humidity: less than or equal to 80 percent.
The picture of the panel of the short circuit box unit is shown in fig. 5, the picture of the panel of the console unit is shown in fig. 6, and the picture of the panel of the test button: when the test wave is pressed down, the short-circuit relay is closed, and the wave recording device collects the test wave. A primary voltmeter: the 'primary voltage' of the short-circuit box is input with voltage in the range of 0-200V. A time relay: and setting the closing time of the short-circuit relay, wherein the ferromagnetic resonance is generally 0.1s, the burst short-circuit test is generally 1s, and the maximum value can be set to 9.99s. An air switch: test bench switch.
The ferroresonance tester control system of the embodiment has good application effect, and not only can be used for a Capacitor Voltage Transformer (CVT) ferroresonance performance test, but also can be used for a test transformer burst short circuit test. Under CVT operating condition, carry out short circuit to the secondary terminal for a short time, make the CVT produce the sudden change, test secondary voltage's output waveform, whether the analysis test result is qualified, its test result is accurate, whole operation process is simple, shows directly perceived, has effectively guaranteed the operation of electric power system safe and reliable.
Claims (9)
1. A control system of a ferromagnetic resonance tester is characterized by comprising a short circuit box unit and a console unit, wherein the short circuit box unit is connected with the console unit; the short circuit box unit comprises a power input module (1), a power monitoring transformer (2), an isolation transformer I (3), a tested transformer (4), an isolation transformer II (5), a current transformer (6) and a short circuit current module (10); the console unit comprises an oscilloscope (8) and a control module (9); one line of the power input module (1) is sequentially connected with a power monitoring transformer (2) and an isolation transformer I (3) in series; the other line of the power input module (1) is connected with a tested transformer (4); the tested transformer (4) is divided into two branches, one branch is connected with an isolation transformer II (5), and the other branch is connected with a current transformer (6); the isolation transformer I (3), the isolation transformer II (5) and the current transformer (6) are connected with an oscilloscope (8); the control module (9) is connected with a short-circuit current module (10);
the short circuit box unit is provided with an interface (7), and the isolation mutual inductor I (3), the isolation mutual inductor II (5) and the current mutual inductor (6) are connected with an oscilloscope (8) through the interface (7).
2. The ferroresonance tester control system of claim 1, wherein the interface (7) is a 5-core aircraft plug; oscilloscope (8) are provided with 5 core aviation plugs, interface (7) are connected with 5 core aviation plugs of oscilloscope (8) through the control line.
3. The ferroresonance tester control system of claim 1, wherein the short circuit current module (10) is provided with a 2-core aviation plug, a short circuit relay and an indicator light; the control module (9) is provided with a 2-core aviation plug and a time relay, and the 2-core aviation plug of the short-circuit current module (10) is connected with the 2-core aviation plug of the control module (9) through a signal wire; the control module (9) is used for controlling the pull-in of a short-circuit relay of the short-circuit current module (10), and the time relay is used for setting the pull-in time of the short-circuit relay of the short-circuit current module (10); the control module (9) is used for starting control signal input and controlling the indication lamp of the short-circuit current module (10) to prompt.
4. The ferroresonance tester control system of claim 3, wherein the control module (9) further comprises a test button, a primary voltmeter and an air switch.
5. The ferroresonance tester control system of claim 1, wherein the power input module (1) provides adjustable power to the power monitoring transformer (2) and the transformer (4) under test.
6. The ferroresonance tester control system according to claim 1, wherein the output voltage of the power supply monitoring transformer (2) passes through the isolation transformer I (3), and then is connected with the first channel of the oscilloscope (8) through the interface (7) as a primary voltage.
7. The ferroresonance tester control system according to claim 1, wherein the output voltage of the tested transformer (4) passes through an isolation transformer II (5), and then is connected with a second channel of an oscilloscope (8) through an interface (7) as a secondary voltage.
8. The ferroresonance tester control system of claim 1, wherein the output voltage of the tested transformer (4) is connected with the current transformer (6) to output short-circuit current, and is connected with the third channel of the oscilloscope (8) through the interface (7) to serve as secondary current.
9. The ferroresonance tester control system of claim 1, 6, 7 or 8, wherein the oscilloscope (8) displays the waveforms of the primary voltage, the secondary voltage and the secondary current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221789536.2U CN217766813U (en) | 2022-07-12 | 2022-07-12 | Ferromagnetic resonance tester control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221789536.2U CN217766813U (en) | 2022-07-12 | 2022-07-12 | Ferromagnetic resonance tester control system |
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| Publication Number | Publication Date |
|---|---|
| CN217766813U true CN217766813U (en) | 2022-11-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221789536.2U Active CN217766813U (en) | 2022-07-12 | 2022-07-12 | Ferromagnetic resonance tester control system |
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|---|---|
| CN (1) | CN217766813U (en) |
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2022
- 2022-07-12 CN CN202221789536.2U patent/CN217766813U/en active Active
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