CN211697987U - Inductance testing device for converter valve anode reactor - Google Patents
Inductance testing device for converter valve anode reactor Download PDFInfo
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- CN211697987U CN211697987U CN201921992158.6U CN201921992158U CN211697987U CN 211697987 U CN211697987 U CN 211697987U CN 201921992158 U CN201921992158 U CN 201921992158U CN 211697987 U CN211697987 U CN 211697987U
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Abstract
The utility model discloses a converter valve anode reactor inductance testing arrangement, including direct current resistance test module, power frequency impedance test module, MCU main control board, temperature compensation measurement module, LCD display screen, auxiliary power module, relay module and data communication module, direct current resistance test module and power frequency impedance test module pass through the relay module and insert the MCU main control board, temperature compensation measurement module inserts the MCU main control board, LCD display screen and auxiliary power module are connected with the MCU main control board, data communication module passes through wireless communication module and inserts MCU main control board and PC, data communication module passes through RS485 communication interface and inserts MCU main control board and PC. The utility model has the advantages that: and a power frequency impedance test module, an MCU (micro control unit) main control board and a temperature compensation measurement module are additionally arranged, so that the accuracy of inductance test is improved.
Description
Technical Field
The utility model relates to an inductance test equipment field especially relates to a converter valve anode reactor inductance testing arrangement.
Background
The converter valve is a core device of a direct current transmission project, the control of direct current voltage and power is realized, and the converter valve comprises a large number of anode reactors. The anode reactor is a key element of the converter valve, mainly plays a role in protecting the thyristor of the converter valve, and improves the durability of the converter valve.
In actual work, the inductance of the anode reactor needs to be tested to evaluate the performance change condition of the anode reactor, a bridge instrument or an LCR tester is usually adopted on site to measure the inductance value of the anode reactor through high-frequency current, but the deviation between a test result and a nameplate value is large, and the main reason is that the inductance parameter of the anode reactor is difficult to accurately measure due to the fact that the test current and the test frequency on site are inconsistent with the laboratory test conditions.
SUMMERY OF THE UTILITY MODEL
To the above problem, the utility model provides a converter valve anode reactor inductance testing arrangement mainly solves the problem that the inductance parameter of anode reactor is difficult to the accurate measurement.
In order to solve the technical problem, the utility model provides a technical scheme as follows:
the utility model provides a converter valve anode reactor inductance testing arrangement, includes direct current resistance test module, power frequency impedance test module, MCU main control board, temperature compensation measurement module, LCD display screen, auxiliary power module, relay module and data communication module, direct current resistance test module and power frequency impedance test module pass through the relay module and insert the MCU main control board, temperature compensation measurement module inserts the MCU main control board, LCD display screen and auxiliary power module are connected with the MCU main control board, data communication module inserts MCU main control board and PC through wireless communication module, data communication module inserts MCU main control board and PC through RS485 communication interface. The selection type of the modules or the components can be determined according to actual needs, and is not limited here, for example, the MCU main control board can be realized by using a macro-crystal STC12C5A48S2 single chip microcomputer, and the LCD screen can select a 7-inch TJC8048X570-011C-Y intelligent serial port liquid crystal screen and the like.
In some embodiments, the DC resistance test module comprises a charging power supply DC, a lithium battery power supply, a standard resistor R1, a standard resistor R2, a DC voltage sampling interface circuit V1 and a DC voltage sampling interface circuit V2, the charging power supply DC is electrically connected with a lithium battery power supply, a series loop is formed among the lithium battery power supply, the standard resistor R1, the standard resistor R2 and the reactor to be tested, the direct current voltage sampling interface circuit V1 collects the direct current voltage between the reactor to be tested and the standard resistor R2, the direct current voltage is connected to the MCU main control board after being isolated and amplified, the DC voltage sampling interface circuit V2 collects the DC voltage at two ends of the standard resistor R2, the DC voltage is connected to the MCU main control board after isolation and amplification, the input end of the charging power supply DC is connected with an AC-DC converter, and the AC-DC converter is connected with an alternating current power supply through a miniature circuit breaker.
In some embodiments, power frequency impedance test module includes miniature circuit breaker CB, electronic voltage regulator, current rising ware, current transformer CT, current type voltage transformer PT, real effective value digital display voltmeter and real effective value digital display ammeter, electronic voltage regulator is connected with the reactor that awaits measuring through current rising ware, current transformer CT with the reactor that awaits measuring and real effective value digital display ammeter are connected, current type voltage transformer PT with the reactor that awaits measuring and real effective value digital display ammeter are connected, electronic voltage regulator passes through miniature circuit breaker CB control break-make.
In some embodiments, the relay module is connected to the electric voltage regulator, and is configured to switch forward and reverse rotation of a dc motor in the electric voltage regulator, and the reactor to be tested is switched to a dc resistance test loop or an ac impedance test loop through the relay module.
In some embodiments, the electric voltage regulator has an input of AC 220V, an output of AC 0-250V and a capacity of 1 KVA.
In some embodiments, the input voltage of the current booster is AC 250V, the output voltage is AC 0-20V, the output current is 0-40A, and the capacity is 1 KVA.
In some embodiments, the relay module is an electromagnetic relay and the control voltage is 12 VDC.
The utility model has the advantages that: the power frequency impedance testing module, the MCU main control board and the temperature compensation measuring module are additionally arranged, the power frequency impedance testing module can automatically adjust high-precision heavy current through the internal negative feedback circuit, the MCU main control board calculates sampling data, and the temperature compensation measuring module compensates sampling temperature, so that the laboratory environment is simulated, and the accuracy of inductance testing is improved.
Drawings
FIG. 1 is a schematic circuit diagram of the inductance testing device of the converter valve anode reactor of the present invention;
FIG. 2 is a schematic diagram of the DC resistance test of the converter valve anode reactor of the present invention;
FIG. 3 is a schematic diagram of the inductance test of the converter valve anode reactor of the present invention;
FIG. 4 is a schematic diagram of a measuring loop of the relay module switching control reactor of the present invention;
fig. 5 is the schematic diagram of the relay module switching control dc motor of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer and clearer, the following will explain the contents of the present invention in detail with reference to the accompanying drawings and the detailed description. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the relevant portions of the present invention are shown in the drawings.
According to fig. 1, this embodiment provides a converter valve anode reactor inductance testing arrangement, including direct current resistance test module 1, power frequency impedance test module 2, MCU main control board 3, temperature compensation measurement module 4, LCD display screen 6, auxiliary power module 7, relay module 8 and data communication module 9, direct current resistance test module 1 and power frequency impedance test module 2 insert MCU main control board 3 through relay module 8, temperature compensation measurement module 4 inserts MCU main control board 3, LCD display screen 6 and auxiliary power module 7 are connected with MCU main control board 3, data communication module 9 inserts MCU main control board 3 and PC computer through wireless communication module 11, data communication module 9 inserts MCU main control board 3 and PC computer 12 through RS485 communication interface. The selection type of the modules or the components can be determined according to actual needs, and is not limited here, for example, the MCU main control board can be realized by using a macro-crystal STC12C5A48S2 single chip microcomputer, and the LCD screen can select a 7-inch TJC8048X570-011C-Y intelligent serial port liquid crystal screen and the like.
The power frequency impedance testing module, the MCU main control board and the temperature compensation measuring module are additionally arranged, the power frequency impedance testing module can automatically adjust high-precision heavy current through the internal negative feedback circuit, the MCU main control board calculates sampling data, and the temperature compensation measuring module compensates sampling temperature, so that the laboratory environment is simulated, and the accuracy of inductance testing is improved.
According to fig. 2, the direct current resistance testing module 1 comprises a charging power supply DC101, a lithium battery power supply 102, a standard resistor R1103, a standard resistor R2104, a direct current voltage sampling interface circuit V1105 and a direct current voltage sampling interface circuit V2106, the charging power supply DC101 is electrically connected with the lithium battery power supply 102, a series loop is formed among the lithium battery power supply 102, the standard resistor R1103, the standard resistor R2104 and the reactor 107 to be tested, the direct current voltage sampling interface circuit V1105 collects the sum of the direct current voltages at the two ends of the reactor 107 to be tested and the standard resistor R2104, and the sum is accessed to the MCU main control board 3 after the isolation and amplification treatment, the direct current voltage sampling interface circuit V2106 collects the direct current voltage at two ends of the standard resistor R2104, the direct current voltage is connected to the MCU main control board 3 after being isolated and amplified, the input of the charging power supply DC101 is connected to an AC-DC converter 108, the AC-DC converter 108 is connected to an AC power source through a micro breaker.
According to fig. 3, power frequency impedance test module 2 includes miniature circuit breaker CB201, electronic voltage regulator 202, current rising ware 203, current transformer CT204, current type voltage transformer PT205, true effective value digital display voltmeter and true effective value digital display ammeter, electronic voltage regulator 202 is connected with the reactor 107 that awaits measuring through current rising ware 203, current transformer CT204 with reactor 107 that awaits measuring and true effective value digital display ammeter are connected, current type voltage transformer PT205 with reactor 107 that awaits measuring and true effective value digital display ammeter are connected, electronic voltage regulator 202 controls the break-make through miniature circuit breaker CB 201.
According to fig. 4 and 5, the relay module 8 is connected to the electric voltage regulator 202, and is configured to switch forward and reverse rotation of the dc motor in the electric voltage regulator 202, and the reactor 107 to be tested is switched to the dc resistance test loop or the ac impedance test loop through the relay module 8. The relay module 8 can switch the reactor 107 to be tested to a direct current resistance test loop or an alternating current impedance test loop, and control the forward and reverse rotation of the direct current motor M in the electric voltage regulator 202. The switching of the direct current resistance test loop or the alternating current impedance test loop is realized through conversion contacts K1-1 and K1-2 of a relay K1, contacts 1 and 2 of K1-1 are closed, contacts 4 and 5 of K1-2 are closed, and the direct current resistance test loop is switched on; k1-1 contacts 1 and 3 are closed, K1-2 contacts 4 and 6 are closed, and the AC impedance test loop is closed. The forward and reverse rotation switching of the direct current motor of the electric voltage regulator 202 is realized by controlling conversion contacts K2-1 and K2-2 of a relay K2, contacts K2-1 and 2 are closed, contacts K2-2 and contacts 4 and 5 are closed, and a forward rotation loop of the direct current motor M is connected; when K2 is released, K2-1 contacts 1 and 3 are closed, K2-2 contacts 4 and 6 are closed, and the reverse loop of the direct current motor M is connected.
Furthermore, the input of the electric voltage regulator 202 is AC 220V, the output is AC 0-250V, and the capacity is 1 KVA.
Furthermore, the input voltage of the current booster is AC 250V, the output voltage is AC 0-20V, the output current is 0-40A, and the capacity is 1 KVA.
Further, the relay module 8 is an electromagnetic relay, and the control voltage is 12 VDC.
The working principle is as follows: after the miniature circuit breaker 109 is closed, the charging power supply DC101 charges the lithium battery power supply 102, the charging power supply DC is cut off after charging is completed, the relay module 8 is switched to the direct current resistance measurement loop, and the direct current resistance measurement loop applies to the reactor 107 to be measuredAdding low-voltage direct current (1.5-2.5) A, measuring the voltage of a reactor 107 to be tested and a standard resistor R1103, the voltage U1 at two ends of the standard resistor R2104 and the voltage U2 at two ends of the standard resistor R2104, measuring the environmental temperature by a temperature compensation measuring module 4, calculating a standard resistance value Rt after temperature compensation R0+ α (T-T0), R0 is the resistance value of the standard resistor at the temperature T0, calculating the direct current I passing through the reactor U2/Rt, calculating the direct current voltage U at two ends of the reactor 107 to be tested to U1-U2, calculating the direct current resistance R of the reactor 107 to be tested to U/I, switching a relay module 8 to an alternating current impedance testing loop, applying power frequency alternating current (10-40) A, measuring the power frequency voltage delta U at two ends of the reactor 107 to be tested and the power frequency current delta I passing through the reactor 107 to be tested, calculating the power frequency impedance Z of the reactor 107 to be tested to2-R2) And/100 pi) displaying the inductance L, the direct current resistance R, the test current and the test temperature value.
The working steps are as follows:
s1) fixing a busbar wiring terminal connected to the reactor 107 to be tested by adopting a test current clamp, and switching on an alternating current 220V power supply by the device;
s2) manually or automatically switching on the miniature circuit breaker 109 in the direct current resistance testing module 1 to electrify the device, confirming that the output of the auxiliary power supply module 7 is normal, the device passes through self-inspection, and the LCD display screen 6, the true effective value digital voltmeter and the true effective value digital ammeter display normal;
s3) starting a direct current resistance test button (not shown in the figure), the device automatically completes the measurement and temperature compensation of U1 and U2, and automatically completes the calculation and display of direct current resistance;
s4), setting an ac test current value, starting an inductance test button (not shown), checking whether the normal reading displayed by the real effective value digital display voltmeter and the real effective value digital display ammeter is normal, automatically completing the measurement of the ac impedance, and automatically completing the calculation and display of the inductance;
s4), if necessary, a data transmission button (not shown) is pressed to transmit the results of testing dc resistance, inductance, test current, temperature, etc. to the PC computer 12 through the data communication module 9 or the wireless communication module 11.
S5) presses a stop button (not shown) to open the micro breaker in the dc resistance test module 1.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (7)
1. A converter valve anode reactor inductance testing device is characterized by comprising a direct current resistance testing module (1), a power frequency impedance testing module (2), an MCU (microprogrammed control unit) main control board (3), a temperature compensation measuring module (4), an LCD (liquid crystal display) screen (6), an auxiliary power supply module (7), a relay module (8) and a data communication module (9), the direct current resistance testing module (1) and the power frequency impedance testing module (2) are connected to the MCU main control board (3) through the relay module (8), the temperature compensation measurement module (4) is connected to the MCU main control board (3), the LCD display screen (6) and the auxiliary power supply module (7) are connected with the MCU main control board (3), the data communication module (9) is accessed to the MCU main control board (3) and the PC computer (12) through the wireless communication module (11), and the data communication module (9) is accessed into the MCU main control board (3) and the PC computer (12) through an RS485 communication interface.
2. The converter valve anode reactor inductance testing device of claim 1, wherein: the direct current resistance testing module (1) comprises a charging power supply DC (101), a lithium battery power supply (102), a standard resistor R1(103), a standard resistor R2(104), a direct current voltage sampling interface circuit V1(105) and a direct current voltage sampling interface circuit V2(106), wherein the charging power supply DC (101) is electrically connected with the lithium battery power supply (102), a series loop is formed among the lithium battery power supply (102), the standard resistor R1(103), the standard resistor R2(104) and an electric reactor (107) to be tested, the direct current voltage sampling interface circuit V1(105) collects direct current voltage between the electric reactor (107) to be tested and the standard resistor R2(104) and is connected into the MCU main control board (3) after isolation amplification processing, the direct current voltage sampling interface circuit V2(106) collects direct current voltage at two ends of the standard resistor R2(104) and is connected into the MCU main control board (3) after isolation amplification processing, the input end of the charging power supply DC (101) is connected with an AC-DC converter (108), and the AC-DC converter (108) is connected with an alternating current power supply through a miniature circuit breaker (109).
3. The converter valve anode reactor inductance testing device according to claim 1, wherein the power frequency impedance testing module (2) comprises a miniature circuit breaker CB (201), an electric voltage regulator (202), a current booster (203), a current transformer CT (204), a current type voltage transformer PT (205), a true effective value digital display voltmeter and a true effective value digital display ammeter, the electric voltage regulator (202) is connected with a reactor (107) to be tested through the current booster (203), the current transformer CT (204) is connected with the reactor (107) to be tested and the true effective value digital display ammeter, the current type voltage transformer PT (205) is connected with the reactor (107) to be tested and the true effective value digital display voltmeter, and the electric voltage regulator (202) is controlled to be switched on and off through the miniature circuit breaker (201).
4. The converter valve anode reactor inductance testing device according to claim 3, characterized in that the relay module (8) is connected with the electric voltage regulator (202) and used for switching the forward and reverse rotation of a direct current motor in the electric voltage regulator (202), and the reactor (107) to be tested is switched to a direct current resistance testing loop or an alternating current impedance testing loop through the relay module (8).
5. The converter valve anode reactor inductance testing device according to claim 3, characterized in that the input of the electric voltage regulator (202) is AC 220V, the output is AC 0-250V, and the capacity is 1 KVA.
6. The inductance testing device of the converter valve anode reactor according to claim 3, characterized in that the input voltage of the current booster is AC 250V, the output voltage is AC 0-20V, the output current is 0-40A, and the capacity is 1 KVA.
7. Converter valve anode reactor inductance testing device according to claim 4, characterized in that the relay module (8) is an electromagnetic relay with a control voltage of 12 VDC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921992158.6U CN211697987U (en) | 2019-11-18 | 2019-11-18 | Inductance testing device for converter valve anode reactor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921992158.6U CN211697987U (en) | 2019-11-18 | 2019-11-18 | Inductance testing device for converter valve anode reactor |
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| CN211697987U true CN211697987U (en) | 2020-10-16 |
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| CN201921992158.6U Active CN211697987U (en) | 2019-11-18 | 2019-11-18 | Inductance testing device for converter valve anode reactor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114076853A (en) * | 2021-10-28 | 2022-02-22 | 南京航空航天大学 | System and method for measuring shielding effectiveness of nonlinear conductive material |
| CN118589940A (en) * | 2024-08-06 | 2024-09-03 | 苏州华兴源创科技股份有限公司 | Micro motor driving control device and control method |
-
2019
- 2019-11-18 CN CN201921992158.6U patent/CN211697987U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114076853A (en) * | 2021-10-28 | 2022-02-22 | 南京航空航天大学 | System and method for measuring shielding effectiveness of nonlinear conductive material |
| CN118589940A (en) * | 2024-08-06 | 2024-09-03 | 苏州华兴源创科技股份有限公司 | Micro motor driving control device and control method |
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