Operating mechanism data acquisition system and its drive circuit module and method

Abstract

The application discloses an operating mechanism data acquisition system and a driving loop module and method thereof, and the module comprises a high-voltage direct-current power supply HM, a high-voltage direct-current power supply KM, a power adapter DP, an embedded control module QK, a control switching plug HT, a supply and discharge circuit, a closing and opening knob KK and a rotary switch ZH2; the high-voltage direct-current power supply HM provides an energy storage power supply and a closing power supply for a measured operating mechanism, the high-voltage direct-current power supply KM provides an opening power supply for the measured operating mechanism, the power adapter DP provides a working power supply for the embedded control module QK, and the required operating power supply voltage for testing can be met; the embedded control module QK can realize program control of driving, the rotary switch ZH2 can realize mode conversion between manual control and program control of driving, and the closing and opening knob KK can realize manual control of driving, so that the problem that traditional operating mechanism research experiments cannot simultaneously integrate automatic control of multiple characteristic parameters is solved.

Description

[0001] This invention is a divisional application of an operating mechanism data acquisition system and method. The parent application was filed on March 27, 2023, and the application number is 202310301122.3. Technical Field

[0002] This invention belongs to the field of data acquisition technology for circuit breaker operating mechanisms, and particularly relates to a data acquisition system for a vacuum circuit breaker operating mechanism, its drive circuit module, and method. Background Technology

[0003] With the increasing demand for intelligent systems in the power supply sector, technologies such as condition monitoring, fault diagnosis, risk prediction, and health assessment have become key research areas in the industry. The accumulation of large amounts of raw data and the comprehensive analysis of multi-parameter data are the foundation and crucial elements of these core technologies. Given existing testing models and instruments, manual data aggregation and fusion are proving inadequate in the context of requiring substantial experimental data, and single-parameter test content cannot meet the demands of comprehensive multi-parameter data analysis.

[0004] Currently, the testing of vacuum circuit breaker operating mechanisms mainly relies on mechanical characteristic testing and single tests using oscilloscopes. The mechanical characteristic testing mainly depends on manual operation to collect the mechanical characteristic parameters of the operating mechanism. Oscilloscopes are used in conjunction with current or voltage sensors to collect current and voltage parameters for different test items. The test data is recorded and integrated manually before being analyzed in a comprehensive manner.

[0005] Currently, the testing and research of operating mechanisms still mainly rely on manual operation and personnel testing experience. This allows for single tests, primarily focusing on mechanical characteristics, but cannot fully integrate and compare multiple parameters such as coil operating current and voltage status, energy storage status, power supply status, and mechanical characteristics. The obtained data are all final numerical results filtered by various algorithms, failing to yield high-quality dynamic holographic raw data. Furthermore, different test contents require different testing instruments, methods, and wiring, placing high demands on the skills of the test personnel. This increases the labor and time costs of research work, resulting in a large workload, low efficiency, difficult comparative analysis, high error rate, and low safety, failing to meet the current needs of intelligent development. Additionally, due to manual operation, data recording and storage still rely on manual input, significantly reducing work efficiency and increasing the risk of human error. Summary of the Invention

[0006] The purpose of this invention is to provide a data acquisition system for an operating mechanism, its drive circuit module, and method, in order to solve the problems of large workload, low efficiency, high error rate, and low safety in traditional operating mechanism research and testing. The drive circuit module of this invention can provide energy storage power and control power for the operating mechanism under test, and meet the operating power voltage value required for testing.

[0007] The present invention solves the above-mentioned technical problems through the following technical solution:

[0008] A drive circuit module is applied to a data acquisition system for a vacuum circuit breaker operating mechanism. The drive circuit module includes a high-voltage DC power supply HM, a high-voltage DC power supply KM, a power adapter DP, an embedded control module QK, a control adapter HT, a power supply / discharge circuit, a closing / opening knob KK, and a rotary switch ZH2. The input terminals of the high-voltage DC power supply HM, high-voltage DC power supply KM, and power adapter DP are all connected to the output terminal of the AC power supply circuit unit. The high-voltage DC power supply HM, high-voltage DC power supply KM, and embedded control module QK are communicatively connected to the data processing and display unit. The output terminal of the high-voltage DC power supply HM is connected to the normally open contacts KMC2-1 / KMC2-2 of contactor KMC2 in the power supply / discharge circuit. The output terminal of the high-voltage DC power supply KM is connected to the normally open contacts KMC3-1 / KMC3-2 of contactor KMC3 in the power supply / discharge circuit. The output terminal of the power adapter DP is connected to the power supply terminal of the embedded control module QK.

[0009] One end K21 / K31 of the control contacts K2 / K3 of the embedded control module QK, the normally open contact KMC2-2 of contactor KMC2 in the power supply and discharge circuit, and the normally open contact KMC3-2 of contactor KMC3 output closing or opening control commands through the control adapter HT; the normally open contact KMC2-1 of contactor KMC2 in the power supply and discharge circuit and the normally closed contact KMC4-3 of contactor KMC4 charge the energy storage power supply through the control adapter HT; the energy release resistor Rf in the power supply and discharge circuit and the normally open contact KMC4-1 of contactor KMC4 are also connected to the energy storage circuit through the control adapter HT;

[0010] One end of each of the two normally closed switches of the rotary switch ZH2 is connected to the other end of the control contacts K2 / K3 of the embedded control module QK, K20 / K30, respectively. The other end of each of the two normally closed switches of the rotary switch ZH2 is connected to the normally open contact KMC2-1 of contactor KMC2 and the normally open contact KMC3-1 of contactor KMC3 in the power supply and discharge circuit, respectively. One end of each of the two normally open switches of the rotary switch ZH2 is connected to one end of the control contacts K2 / K3 of the embedded control module QK, K21 / K31, via the opening and closing knob KK. The other end of each of the two normally open switches of the rotary switch ZH2 is connected to the normally open contact KMC2-1 of contactor KMC2 and the normally open contact KMC3-1 of contactor KMC3 in the power supply and discharge circuit, respectively.

[0011] Based on the same concept, the present invention also provides an operating mechanism data acquisition system, the system including the drive loop module as described above.

[0012] Based on the same concept, the present invention also provides a drive control method for the drive loop module as described above, the method comprising the following steps:

[0013] When the operation is program-controlled, the control contact K2 in the embedded control module QK is closed according to the closing control command issued by the industrial control computer host, thereby connecting the closing control circuit of the tested operating mechanism; the control contact K3 in the embedded control module QK is closed according to the opening control command issued by the industrial control computer host, thereby connecting the opening control circuit of the tested operating mechanism.

[0014] When manually controlled, the normally closed switch of the rotary switch ZH2 is opened and the normally open switch is closed. According to the displayed opening status, the closing / opening knob KK is rotated to the closing position to connect the closing control circuit of the tested operating mechanism; according to the displayed closing status, the closing / opening knob KK is rotated to the opening position to connect the opening control circuit of the tested operating mechanism.

[0015] This invention also provides an operating mechanism data acquisition system for a vacuum circuit breaker. The system includes an AC power supply circuit unit, a data acquisition circuit unit, a drive circuit unit, and a data processing and display unit. The output terminal of the AC power supply circuit unit is connected to the data acquisition circuit unit, the drive circuit unit, and the data processing and display unit, respectively. The data acquisition circuit unit is connected to the operating mechanism under test and the data processing and display unit, respectively. The drive circuit unit is connected to the operating mechanism under test and the data processing and display unit, respectively.

[0016] The AC power supply circuit unit is configured to provide AC power to the data acquisition circuit unit, the drive circuit unit, and the data processing and display unit;

[0017] The data acquisition circuit unit is configured to acquire the contact status signal of the circuit breaker under test, and to acquire the opening and closing control current signal, the opening and closing coil current signal, the energy storage voltage signal and the contact displacement signal of the operating mechanism under test under the control command of the data processing and display unit.

[0018] The drive circuit unit is configured to provide power to the operating mechanism under test and to issue closing control commands or opening control commands to the operating mechanism under test, so as to drive the operating mechanism under test to perform corresponding actions.

[0019] The data processing and display unit is configured to determine whether the circuit breaker under test is in an open or closed state based on the contact status signal acquired by the data acquisition circuit unit, and generate the opposite control command.

[0020] Furthermore, the AC power circuit unit includes a circuit breaker QF, a contactor KMC1, a rotary switch ZH1, and an indicator light JD; the two ends of the main contact QF1 of the circuit breaker QF are respectively connected to the live wire L of the external AC power and the first end of the normally open contact KMC1-1 of the contactor KMC1, and the main contact QF1 is also connected to the first end of the rotary switch ZH1; one end of the main contact QF2 of the circuit breaker QF is connected to the neutral wire N of the external AC power, and the other end is respectively connected to the first end of the normally open contact KMC1-2 of the contactor KMC1 and the first end of the coil of the contactor KMC1, and the second end of the coil of the contactor KMC1 is connected to the second end of the rotary switch ZH1; a branch formed by the indicator light JD and the normally open contact KMC1-3 of the contactor KMC1 is connected in parallel to the two ends of the coil of the contactor KMC1;

[0021] The second end of the normally open contact KMC1-1 and the second end of the normally open contact KMC1-2 of the contactor KMC1 serve as the output terminals of the AC power circuit unit.

[0022] Furthermore, the data acquisition loop unit includes a data acquisition module, an I / O module, sampling resistors R1-R5, current sensors L1-L4, low-voltage DC switching power supplies Z15 and Z24, a displacement sensor ZW, and a voltage sensor DY. The input terminals of the low-voltage DC switching power supplies Z15 and Z24 are both connected to the output terminals of the AC power supply loop unit. The output terminal of the low-voltage DC switching power supply Z15 is connected to the power supply terminals of the current sensors L1-L4 and the displacement sensor ZW, respectively. The output terminal of the low-voltage DC switching power supply Z24 is connected to the power supply terminal of the voltage sensor DY. The data acquisition module and the I / O module are respectively connected to the data processing and display unit.

[0023] The current sensor L1 is installed in the closing control circuit of the operating mechanism under test, and its output terminal is connected to the input terminal of the data acquisition module via sampling resistor R5. The current sensor L1 is used to acquire the closing control current signal of the operating mechanism under test. The current sensor L2 is installed in the opening control circuit of the operating mechanism under test, and its output terminal is connected to the input terminal of the data acquisition module via sampling resistor R4. The current sensor L2 is used to acquire the opening control current signal of the operating mechanism under test.

[0024] The current sensor L3 is installed in the closing coil circuit of the operating mechanism under test, and its output terminal is connected to the input terminal of the data acquisition module via sampling resistor R3. The current sensor L3 is used to collect the closing coil current signal of the operating mechanism under test. The current sensor L4 is installed in the opening coil circuit of the operating mechanism under test, and its output terminal is connected to the input terminal of the data acquisition module via sampling resistor R2. The current sensor L4 is used to collect the opening coil current signal of the operating mechanism under test.

[0025] The displacement sensor ZW is installed in the transmission path of the operating mechanism under test, and its output terminal is connected to the input terminal of the data acquisition module via the sampling resistor R1. The displacement sensor ZW is used to acquire the contact displacement signal of the circuit breaker under test.

[0026] The voltage sensor DY is installed in the energy storage circuit of the operating mechanism under test, and its output terminal is connected to the input terminal of the data acquisition module. The voltage sensor DY is used to acquire the energy storage voltage signal of the operating mechanism.

[0027] The I / O module is used to acquire the contact status signals of the circuit breaker under test and send the acquired contact status signals to the data processing and display unit.

[0028] Furthermore, the power supply terminal of the current sensor L3 is connected to the output terminal of the low-voltage DC switching power supply Z15 through ports 1 and 2 of the sampling adapter CZ1, and the output terminal of the current sensor L3 is connected to the input terminal of the data acquisition module through port 3 of the sampling adapter CZ1 and sampling resistor R3.

[0029] The power supply terminal of the current sensor L4 is connected to the output terminal of the low-voltage DC switching power supply Z15 through ports 1 and 2 of the sampling adapter CZ2, and the output terminal of the current sensor L4 is connected to the input terminal of the data acquisition module through port 3 of the sampling adapter CZ2 and sampling resistor R2.

[0030] The power supply terminal of the displacement sensor ZW is connected to the output terminal of the low-voltage DC switching power supply Z15 through ports 1 and 2 of the sampling adapter CZ3. The output terminal of the displacement sensor ZW is connected to the input terminal of the data acquisition module through port 3 of the sampling adapter CZ3 and sampling resistor R1.

[0031] The acquisition end of the voltage sensor DY is connected to the energy storage circuit of the operating mechanism under test through ports 1 and 2 of the sampling adapter CZ4 and the control adapter HT in the drive circuit unit.

[0032] Furthermore, when the operating mechanism under test is a permanent magnet operating mechanism, the voltage sensor DY is located in the energy storage capacitor circuit of the operating mechanism under test; when the operating mechanism under test is a spring operating mechanism, the voltage sensor DY is located in the energy storage power supply circuit of the operating mechanism under test.

[0033] Furthermore, the drive circuit unit includes a high-voltage DC power supply HM, a high-voltage DC power supply KM, a power adapter DP, an embedded control module QK, a control adapter HT, a power supply and discharge circuit, a closing / opening knob KK, and a rotary switch ZH2; the input terminals of the high-voltage DC power supply HM, the high-voltage DC power supply KM, and the power adapter DP are all connected to the output terminal of the AC power circuit unit; the high-voltage DC power supply HM, the high-voltage DC power supply KM, and the embedded control module QK are communicatively connected to the data processing and display unit; the output terminal of the high-voltage DC power supply HM is connected to the normally open contact KMC2-1 / KMC2-2 of the contactor KMC2 in the power supply and discharge circuit, the output terminal of the high-voltage DC power supply KM is connected to the normally open contact KMC3-1 / KMC3-2 of the contactor KMC3 in the power supply and discharge circuit, and the output terminal of the power adapter DP is connected to the power supply terminal of the embedded control module QK;

[0034] One end K21 / K31 of the control contacts K2 / K3 of the embedded control module QK, the normally open contact KMC2-2 of contactor KMC2 in the power supply and discharge circuit, and the normally open contact KMC3-2 of contactor KMC3 output closing or opening control commands through the control adapter HT; the normally open contact KMC2-1 of contactor KMC2 in the power supply and discharge circuit and the normally closed contact KMC4-3 of contactor KMC4 charge the energy storage power supply through the control adapter HT; the energy release resistor Rf in the power supply and discharge circuit and the normally open contact KMC4-1 of contactor KMC4 are also connected to the energy storage circuit through the control adapter HT;

[0035] One end of each of the two normally closed switches of the rotary switch ZH2 is connected to the other end of the control contacts K2 / K3 of the embedded control module QK, K20 / K30, respectively. The other end of each of the two normally closed switches of the rotary switch ZH2 is connected to the normally open contact KMC2-1 of contactor KMC2 and the normally open contact KMC3-1 of contactor KMC3 in the power supply and discharge circuit, respectively. One end of each of the two normally open switches of the rotary switch ZH2 is connected to one end of the control contacts K2 / K3 of the embedded control module QK, K21 / K31, via the opening and closing knob KK. The other end of each of the two normally open switches of the rotary switch ZH2 is connected to the normally open contact KMC2-1 of contactor KMC2 and the normally open contact KMC3-1 of contactor KMC3 in the power supply and discharge circuit, respectively.

[0036] Further, the power supply and discharge circuit includes an embedded control module open contact QK-K1, a rotary switch ZH3, a button SB, contactors KMC2, KMC3, and KMC4, an indicator light ZD, and a release resistor Rf. The embedded control module open contact QK-K1 is connected in parallel with the button SB and then in series with the coil of contactor KMC4 to form a first branch. One normally open switch of the rotary switch ZH3 is connected in series with the coil of contactor KMC2 to form a second branch. The other normally open switch of the rotary switch ZH3 is connected in series with the coil of contactor KMC3 to form a third branch. The normally open contact KMC3-3 of contactor KMC3 is connected in series with the indicator light ZD to form a fourth branch. The first, second, third, and fourth branches are connected in parallel and then connected to the output terminal of the AC power supply circuit unit. The normally closed contact KMC4-3 of contactor KMC4 is connected to the normally open contact KMC2-2 of contactor KMC2, and the release resistor Rf is connected to the normally closed contact KMC4-1 of contactor KMC4.

[0037] Furthermore, the data processing and display unit includes a UPS power supply, a display, and an industrial computer host; the input terminal of the UPS power supply is connected to the output terminal of the AC power circuit unit, and the output terminal of the UPS power supply is connected to the power terminals of the display and the industrial computer host; the industrial computer host is connected to the display.

[0038] Based on the same concept, the present invention also provides a control method for the operating mechanism data acquisition system as described above, which includes the following steps:

[0039] During testing, the I / O module of the data acquisition loop unit acquires the contact status signals of the circuit breaker under test;

[0040] The data processing and display unit determines whether the circuit breaker under test is in the open or closed state based on the contact status signal collected by the I / O module, and generates a closing control command or an opening control command.

[0041] The closing control command controls the closing control circuit of the tested operating mechanism to be connected, or the opening control command controls the opening control circuit of the tested operating mechanism to be connected.

[0042] The data acquisition circuit unit acquires the closing control current signal or the opening control current signal, and then acquires the closing coil current signal or the opening coil current signal, the energy storage voltage signal, and the contact displacement signal.

[0043] Beneficial effects

[0044] Compared with the prior art, the advantages of the present invention are as follows:

[0045] The present invention provides a data acquisition system and method for operating mechanisms. Under the control of a data processing and display unit, the data acquisition loop unit can acquire and measure parameters such as the opening and closing control current signal, the opening and closing coil current signal, the energy storage voltage signal, and the contact displacement signal of various types of operating mechanisms. This achieves the acquisition of multi-feature parameter fusion data, solving the problem of automated control where traditional operating mechanism research and testing cannot simultaneously integrate multiple feature parameters. It is applicable to various types of operating mechanisms such as springs and permanent magnets. The present invention greatly reduces the workload of testing, improves work efficiency, reduces the error rate, and improves test safety.

[0046] By comparing and analyzing the multi-feature parameter data collected by the system, the risks of human factors during the test are reduced, the safety of the test is increased, the time and labor costs are reduced, the efficiency is improved, the technical development of the test method for vacuum circuit breaker operating mechanism is promoted, the data foundation for the research and development of various types of operating mechanisms and circuit breakers is laid, and the effective data support for the development of intelligent power system and power equipment condition monitoring technology is provided. Attached Figure Description

[0047] To more clearly illustrate the technical solution of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only one embodiment of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0048] Figure 1 This is a block diagram of the data acquisition system for the operating mechanism in an embodiment of the present invention;

[0049] Figure 2 This is a schematic diagram of the AC power supply loop unit circuit in an embodiment of the present invention;

[0050] Figure 3 This is a schematic diagram of the data acquisition loop unit circuit in an embodiment of the present invention;

[0051] Figure 4 This is a schematic diagram of the drive loop unit circuit in an embodiment of the present invention;

[0052] Figure 5 This is a schematic diagram of the data processing and display unit circuit in an embodiment of the present invention;

[0053] Figure 6 This is a flowchart illustrating the power-on process of the data acquisition system for the operating mechanism in this embodiment of the invention.

[0054] Figure 7 This is a graph showing the characteristic parameters during the closing operation in an embodiment of the present invention;

[0055] Figure 8 This is a graph showing the characteristic parameters during the tripping operation in an embodiment of the present invention;

[0056] Figure 9 This is a flowchart of the power-off process of the data acquisition system of the operating mechanism in an embodiment of the present invention. Detailed Implementation

[0057] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0058] The technical solutions of this application will be described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0059] The circuit breaker under test in this invention is a vacuum circuit breaker.

[0060] like Figure 1 As shown in the figure, the data acquisition system for the operating mechanism of a vacuum circuit breaker provided by the present invention includes an AC power supply circuit unit, a data acquisition circuit unit, a drive circuit unit, and a data processing and display unit; the output terminal of the AC power supply circuit unit is connected to the data acquisition circuit unit, the drive circuit unit, and the data processing and display unit respectively; the data acquisition circuit unit is connected to the operating mechanism under test and the data processing and display unit respectively; the drive circuit unit is connected to the operating mechanism under test and the data processing and display unit.

[0061] The AC power supply circuit unit provides AC220V power to the data acquisition circuit unit, drive circuit unit, and data processing and display unit. In one specific embodiment of the invention, as follows... Figure 2As shown, the AC power circuit unit includes a circuit breaker QF, a contactor KMC1, a rotary switch ZH1, and an indicator light JD. The two ends of the main contact QF1 of the circuit breaker QF are connected to the live wire L of the external AC power and the first end of the normally open contact KMC1-1 of the contactor KMC1, respectively. The main contact QF1 is also connected to the first end of the rotary switch ZH1. One end of the main contact QF2 of the circuit breaker QF is connected to the neutral wire N of the external AC power, and the other end is connected to the first end of the normally open contact KMC1-2 of the contactor KMC1 and the first end of the coil of the contactor KMC1, respectively. The second end of the coil of the contactor KMC1 is connected to the second end of the rotary switch ZH1. A branch formed by the indicator light JD and the normally open contact KMC1-3 of the contactor KMC1 is connected in parallel across the two ends of the coil of the contactor KMC1. The second terminal of the normally open contact KMC1-1 and the second terminal of the normally open contact KMC1-2 of contactor KMC1 serve as the output terminals of the AC power supply circuit unit, providing AC power to the data acquisition circuit unit, the drive circuit unit, and the data processing and display unit.

[0062] The specific working process of the AC power supply circuit unit is as follows: After the circuit breaker QF is closed, the power input control unit starts to supply power, and the main contacts QF1 and QF2 of the circuit breaker QF are closed. If the rotary switch ZH1 is rotated to the closed state at this time, the coil of the contactor KMC1 is energized, and its normally open contacts KMC1-1, KMC1-2, and KMC1-3 are closed. The indicator light JD is energized and stays on, indicating that the AC power supply has been output. The AC power supply provides working power to the UPS power supply, high voltage DC power supplies HM and KM, power adapter DP, low voltage DC switching power supplies Z15 and Z24, and the power supply and discharge circuit through the normally open contacts KMC1-1 and KMC1-2.

[0063] The data acquisition circuit unit is used to acquire the contact status signal of the circuit breaker under test, and to acquire the opening and closing control current signal, the opening and closing coil current signal, the energy storage voltage signal and the contact displacement signal of the operating mechanism under test under the control command of the data processing and display unit.

[0064] In one specific embodiment of the present invention, such as Figure 3As shown, the data acquisition loop unit includes a data acquisition module, an I / O module, sampling resistors R1-R5, current sensors L1-L4, low-voltage DC switching power supplies Z15 and Z24, sampling adapter connectors CZ1-CZ5, a displacement sensor ZW, and a voltage sensor DY. The input terminals of low-voltage DC switching power supplies Z15 and Z24 are connected to the output terminals of the AC power supply loop unit. The output terminal of low-voltage DC switching power supply Z15 is connected to the power supply terminals of current sensors L1-L4 and displacement sensor ZW, respectively, providing operating power for current sensors L1-L4 and displacement sensor ZW. The output terminal of low-voltage DC switching power supply Z24 is connected to the power supply terminal of voltage sensor DY, providing operating power for voltage sensor DY. The data acquisition module and I / O module are connected to the data processing and display unit via RS232 communication.

[0065] The current sensor L1 is used to acquire the closing control current signal of the operating mechanism under test. The current sensor L1 is installed in the closing control circuit of the operating mechanism under test, and the output terminal of the current sensor L1 is connected to the input terminal of the data acquisition module through the sampling resistor R5, so that the closing control current signal acquired by the current sensor L1 is fed back to the data acquisition module.

[0066] Current sensor L2 is used to acquire the tripping control current signal of the operating mechanism under test. Current sensor L2 is sleeved in the tripping control circuit of the operating mechanism under test, and the output terminal of current sensor L2 is connected to the input terminal of the data acquisition module through sampling resistor R4, so that the tripping control current signal acquired by current sensor L2 is fed back to the data acquisition module.

[0067] Current sensor L3 is used to acquire the closing coil current signal of the tested operating mechanism. Current sensor L3 is fitted into the closing coil circuit of the tested operating mechanism, and its output terminal is connected to the input terminal of the data acquisition module via port 3 of sampling adapter CZ1 and sampling resistor R3, allowing the closing coil current signal acquired by current sensor L3 to be fed back to the data acquisition module. The power supply terminal of current sensor L3 is connected to the output terminal of low-voltage DC switching power supply Z15 via ports 1 and 2 of sampling adapter CZ1.

[0068] Current sensor L4 is used to acquire the trip coil current signal of the tested operating mechanism. Current sensor L4 is fitted into the trip coil circuit of the tested operating mechanism, and its output terminal is connected to the input terminal of the data acquisition module via port 3 of sampling adapter CZ2 and sampling resistor R2, allowing the trip coil current signal acquired by current sensor L4 to be fed back to the data acquisition module. The power supply terminal of current sensor L4 is connected to the output terminal of low-voltage DC switching power supply Z15 via ports 1 and 2 of sampling adapter CZ2.

[0069] The displacement sensor ZW is used to acquire the contact displacement signal of the circuit breaker under test. The displacement sensor ZW is installed in the transmission path of the operating mechanism under test, and its output terminal is connected to the input terminal of the data acquisition module via port 3 of the sampling adapter CZ3 and sampling resistor R1, so that the contact displacement signal acquired by the displacement sensor ZW is fed back to the data acquisition module. The power supply terminal of the displacement sensor ZW is connected to the output terminal of the low-voltage DC switching power supply Z15 via ports 1 and 2 of the sampling adapter CZ3.

[0070] Voltage sensor DY is used to acquire the energy storage voltage signal of the operating mechanism under test. Voltage sensor DY is installed in the energy storage circuit of the operating mechanism under test, and the output terminal of voltage sensor DY is connected to the input terminal of the data acquisition module, so that the energy storage voltage signal acquired by voltage sensor DY is fed back to the data acquisition module.

[0071] The I / O module is used to acquire the contact status signals of the circuit breaker under test and send the acquired contact status signals to the data processing and display unit.

[0072] In this embodiment, current sensors L1 to L4 are all Hall current sensors; displacement sensor ZW is a linear displacement sensor or an angular displacement sensor.

[0073] During data acquisition, the current sensors L1 to L4 and the displacement sensor ZW are powered by a low-voltage DC switching power supply Z15, and the acquired parameters are fed back to the data acquisition module after passing through the corresponding sampling resistors. Current sensors L3 and L4 are arranged in the closing and opening coil circuits of the tested operating mechanism via sampling adapters CZ1 and CZ2; displacement sensor ZW is arranged in the transmission path of the tested operating mechanism via sampling adapter CZ3; voltage sensor DY is arranged in the energy storage capacitor circuit or energy storage power circuit of the tested operating mechanism via sampling adapter CZ4. When the tested operating mechanism is a permanent magnet operating mechanism, the voltage sensor DY is located in the energy storage capacitor circuit; when the tested operating mechanism is a spring operating mechanism, the voltage sensor DY is located in the energy storage power circuit. The contact status signal of the tested circuit breaker is transmitted to the I / O module via sampling adapter CZ5. The I / O module then converts the acquired contact status signal from analog to digital and transmits it to the data acquisition module. At the same time, the contact status signal is reported to the industrial control computer host via the RS232 communication interface.

[0074] The drive circuit unit is used to provide power to the operating mechanism under test, and to issue closing control commands or opening control commands to the operating mechanism under test under the control commands of the data processing and display unit, so as to drive the operating mechanism under test to perform corresponding actions.

[0075] In one specific embodiment of the present invention, such as Figure 4As shown, the drive circuit unit includes a high-voltage DC power supply HM, a high-voltage DC power supply KM, a power adapter DP, an embedded control module QK, a control adapter HT, a power supply and discharge circuit, a closing / opening knob KK, and a rotary switch ZH2. The input terminals of the high-voltage DC power supply HM, the high-voltage DC power supply KM, and the power adapter DP are all connected to the output terminals of the AC power circuit unit. The high-voltage DC power supply HM, the high-voltage DC power supply KM, and the embedded control module QK are connected to the data processing and display unit via an RS232 interface. The output terminals HM+ / HM- of the high-voltage DC power supply HM are connected to the normally open contacts KMC2-1 / KMC2-2 of the contactor KMC2 in the power supply and discharge circuit. The output terminals KM+ / KM- of the high-voltage DC power supply KM are connected to the normally open contacts KMC3-1 / KMC3-2 of the contactor KMC3 in the power supply and discharge circuit. The output terminal of the power adapter DP is connected to the power supply terminals L / N of the embedded control module QK.

[0076] When the drive circuit unit is working, the high-voltage DC power supply HM is responsible for providing the energy storage power and closing power to the operating mechanism under test, the high-voltage DC power supply KM is responsible for providing the opening power to the operating mechanism under test, and the power adapter DP provides the working power to the embedded control module QK.

[0077] One end of the control contacts K2 / K3 of the embedded control module QK, K21 / K31, the normally open contact KMC2-2 of contactor KMC2 in the power supply and discharge circuit, and the normally open contact KMC3-2 of contactor KMC3 are connected via the control adapter HT.

[0078] (HT-14 / HT-4 / HT-30 / HT-31) outputs closing or opening control commands to drive the tested operating mechanism to perform closing or opening actions. In the power supply / discharge circuit, the normally open contact KMC2-1 of contactor KMC2 and the normally closed contact KMC4-3 of contactor KMC4 charge the energy storage power supply in the energy storage circuit via control adapter HT (HT-10 / HT-20). The energy release resistor Rf and the normally open contact KMC4-1 of contactor KMC4 are also connected to the energy storage circuit via control adapter HT (HT-2 / HT-12). Normally, the normally open contact KMC4-1 is open, and the energy storage power supply (e.g., the energy storage capacitor) is not discharged. When the test is completed or when it is necessary to reduce the energy storage voltage to the required test operating voltage value, the normally open contact KMC4-1 closes, discharging the energy storage capacitor of the circuit breaker under test through the energy release resistor Rf, thereby achieving automatic control of the operating voltage value. The discharge circuit can be started automatically or manually.

[0079] Based on the closing control command issued by the industrial control computer, the control contact K2 in the embedded control module QK closes, connecting the closing control circuit of the tested operating mechanism. Similarly, based on the opening control command, the control contact K3 in the embedded control module QK closes, connecting the opening control circuit of the tested operating mechanism, thereby triggering current sensors L1 / L2 to collect the closing and opening control current signals. Automatic control of the closing and opening operations can be achieved through the embedded control module QK according to the control commands.

[0080] One end of each of the two normally closed switches of rotary switch ZH2 is connected to the other end of the control contacts K2 / K3 of the embedded control module QK, K20 / K30, respectively. The other end of each of the two normally closed switches of rotary switch ZH2 is connected to the normally open contact KMC2-1 of contactor KMC2 and the normally open contact KMC3-1 of contactor KMC3 in the power supply and discharge circuit, respectively. One end of each of the two normally open switches of rotary switch ZH2 is connected to one end of the control contacts K2 / K3 of the embedded control module QK, K21 / K31, via the opening and closing knob KK. The other end of each of the two normally open switches of rotary switch ZH2 is connected to the normally open contact KMC2-1 of contactor KMC2 and the normally open contact KMC3-1 of contactor KMC3 in the power supply and discharge circuit, respectively. The industrial control computer determines whether the circuit breaker under test is in the open or closed state based on the contact status signals collected by the I / O module, and displays the contact status on the display. When the open state is displayed, the normally closed switch of the rotary switch ZH2 is opened and the normally open switch is closed, and the open / close knob KK is rotated to the closed position, connecting the closing control circuit of the tested operating mechanism. When the closed state is displayed, the normally closed switch of the rotary switch ZH2 is opened and the normally open switch is closed, and the open / close knob KK is rotated to the open position, connecting the opening control circuit of the tested operating mechanism, thereby triggering the current sensors L1 / L2 to collect the closing and opening control current signals. Based on the contact status displayed on the display, the opening and closing operations can be manually controlled by the open / close knob KK and the rotary switch ZH2.

[0081] When the AC power circuit unit is started, the drive circuit unit is ready to operate. If the rotary switch ZH3 is turned to the closed position at this time, the coils of contactors KMC2 and KMC3 are energized, and their normally open contacts KMC2-1, KMC2-2 and KMC3-1, KMC3-2, KMC3-3 close. The indicator light ZD is energized and stays on, indicating that the DC power supply has been output. The energy storage power supply is then output to the tested operating mechanism via the control adapters HT-10 and HT-20. When the rotary switch ZH2 is in the programmable position ( Figure 4In the default state of ZH2, the embedded control modules QK-K2 and QK-K3 can issue opening and closing control commands to the tested operating mechanism. These commands are sent from the industrial control computer via the RS232 communication interface. When the rotary switch ZH2 is in the manual position (…), Figure 4 After the ZH2 switch is closed, the opening / closing knob KK can issue opening and closing control commands to the tested operating mechanism. The command information is issued by manually controlling the opening / closing knob KK. The closing control commands are all output to the tested operating mechanism via control adapters HT-4 and HT-14, and the opening control commands are all output to the tested operating mechanism via control adapters HT-30 and HT-31. In addition, control adapters HT-2 and HT-12 are energy storage power sampling input interfaces.

[0082] In one specific embodiment of the present invention, the power supply and discharge circuit includes an embedded control module open contact QK-K1, a rotary switch ZH3, a button SB, contactors KMC2, KMC3, and KMC4, an indicator light ZD, and a release resistor Rf. The embedded control module open contact QK-K1 is connected in parallel with the button SB and then in series with the coil of contactor KMC4 to form a first branch. One normally open switch of rotary switch ZH3 is connected in series with the coil of contactor KMC2 to form a second branch. The other normally open switch of rotary switch ZH3 is connected in series with the coil of contactor KMC3 to form a third branch. The normally open contact KMC3-3 of contactor KMC3 is connected in series with the indicator light ZD to form a fourth branch. The first, second, third, and fourth branches are connected in parallel and then connected to the output terminal of the AC power supply circuit unit. The normally closed contact KMC4-3 of contactor KMC4 is connected to the normally open contact KMC2-2 of contactor KMC2, and the release resistor Rf is connected to the normally closed contact KMC4-1 of contactor KMC4.

[0083] The power supply and discharge circuit controls the on / off supply of power from the high-voltage DC power supplies HM and KM to the tested operating mechanism. The embedded control module's open contact QK-K1, button SB, contactor KMC4, and energy release resistor Rf constitute the discharge circuit, used for the energy storage capacitor of the permanent magnet operating mechanism to release energy. Discharge can be controlled via the embedded control module's open contact QK-K1 or manually via button SB. During controlled discharge, the industrial computer sends a discharge control command to the embedded control module QK via the RS232 communication interface. When QK-K1 closes, the contactor KMC4 coil is energized, its normally open contact KMC4-1 closes, and its normally closed contact KMC4-3 opens, forming a protective interlock between power supply and discharge, preventing simultaneous power supply and discharge operations. When contact KMC4-1 is closed, the discharge circuit is activated, and the energy release resistor Rf discharges the energy storage capacitor of the operating mechanism through the control adapter connectors HT-2 and HT-12. At the same time, when contact KMC4-3 is open, the output circuit of the control adapter connector HT-20 to the operating mechanism under test is cut off, and the power supply to the operating mechanism under test is stopped.

[0084] The data processing and display unit is used to determine whether the circuit breaker under test is in the open or closed state based on the contact status signal collected by the data acquisition circuit unit, and generates the opposite control command. That is, when it is in the open state, a closing control command is generated, and when it is in the closed state, a opening control command is generated. The operating mechanism can only perform the opening operation when it is in the closed state, and can only perform the closing operation when it is in the open state.

[0085] In one specific embodiment of the present invention, such as Figure 5 As shown, the data processing and display unit includes a monitor and an industrial computer host; the industrial computer host is connected to the monitor; the monitor displays the program operation interface and the collected data parameters and waveforms; the industrial computer host is responsible for running the system program, issuing control commands, communication commands, data acquisition and storage commands, calculation and display commands, etc., and storing data.

[0086] The data processing and display unit also includes a UPS power supply. The input terminal of the UPS power supply is connected to the output terminal of the AC power circuit unit, and the output terminal of the UPS power supply is connected to the power supply terminals of the display and the industrial control computer host. The UPS power supply provides uninterrupted power to the industrial control computer host and the display, ensuring the safety of data operation and storage.

[0087] The working process of the operating mechanism data acquisition system described in this invention is as follows:

[0088] First, confirm that there are no other obstacles within the range of the system and the circuit breaker under test, and that the surrounding environment is safe and suitable for testing. Second, after confirming that the test leads and sensors are installed correctly, connect the power cord, turn on the main power switch, and turn on the AC power knob. At this time, the AC power indicator JD of the system will light up, indicating that the internal AC power circuit unit of the system is working normally. Then, turn on the UPS power supply, the energy storage DC power supply, and the control DC power supply in sequence. At this time, depending on the actual test requirements, start the industrial control computer and the monitor, and adjust the DC power output parameters. Finally, turn on the DC power knob. The system DC power indicator ZD will light up, indicating that the internal DC power supply of the system is working normally. Then, start the output of the energy storage DC power supply and the control DC power supply respectively, and observe that the energy storage and DC power output of the circuit breaker under test are normal. If normal, the test can be carried out. If any abnormality occurs, immediately disconnect the power and check. Figure 6 The system power-on flowchart is shown.

[0089] The entire system takes the moment the control command is issued as the starting point for waveform recording. The system is triggered to start waveform recording by the opening and closing control current of the circuit breaker under test. The waveform recording duration is set by the software program to a fixed duration or a constraint on the number of data points to be collected. Therefore, there is no need to trigger a termination signal. Waveform recording will automatically terminate when the constraint condition is reached.

[0090] When the AC power supply circuit unit starts outputting AC power, the system enters the working state. The contact status signal of the circuit breaker under test is fed back to the I / O module and data acquisition module via the adapter CZ5. The I / O module then converts the "analog signal" into a "digital signal" and sends it to the industrial control computer host to determine the contact status of the circuit breaker under test (whether it is closed or open) and generate control commands. If the control mode is program control (ZH2 is...), the system will then be able to determine the contact status of the circuit breaker under test (whether it is closed or open) and generate control commands. Figure 4 In the default state, the industrial control computer sends a tripping or closing control command to the embedded control module QK via the communication interface. QK then closes the corresponding control contact (K2 or K3) to connect the tripping or closing control circuit according to the control requirements (tripping or closing). The control command is then sent to the circuit breaker control system via current sensors L1 (collecting the closing control current signal) and L2 (collecting the tripping control current signal), generating the corresponding circuit current. At this time, L1 and L2 obtain the corresponding control current characteristic parameters and feed them back to the data acquisition module. This also triggers the data acquisition module to start collecting various other characteristic parameters.

[0091] Under the control of the control command, the controllable operating mechanism driver program is started, and the operating mechanism drive coil is energized. At this time, L3 and L4 obtain the current characteristic parameters of the opening and closing coil of the tested operating mechanism and feed them back to the data acquisition module. At the same time, the energy storage circuit of the tested circuit breaker needs to re-store energy due to the drive discharge of the opening and closing coil of the operating mechanism, so the energy storage voltage will change. At this time, the voltage sensor DY obtains the corresponding energy storage voltage characteristic parameters and feeds them back to the data acquisition module.

[0092] When the opening and closing coils of the tested operating mechanism are energized, they drive the mechanical transmission part of the operating mechanism to complete the action required by the control command (i.e., closing action or opening action). At this time, the displacement sensor ZW obtains the displacement characteristic quantity due to the position change of the transmission part of the operating mechanism and feeds it back to the data acquisition module. The displacement sensor ZW can be an angular displacement sensor or a linear displacement sensor, depending on the actual application conditions and installation position.

[0093] The characteristic curves under closing operation are as follows: Figure 7 As shown, the characteristic quantity curves under the tripping operation are as follows: Figure 8 As shown, based on the basic characteristic parameters and time parameters (i.e., opening and closing control current signal, opening and closing coil current signal, energy storage voltage signal, and contact displacement signal) collected above, the corresponding values ​​of other parameters are obtained according to the corresponding feature value algorithm and edge algorithm, such as total stroke, overtravel, opening distance, opening and closing speed, opening and closing time, closing synchronization, closing bounce, opening rebound, etc.

[0094] If the control method is manual control, the control command for the ZH2 opening and closing point state transition is manually issued by the closing and opening knob KK. To close the circuit, rotate KK to the closing position; to open the circuit, rotate KK to the opening position. Subsequent data acquisition triggering and data acquisition process are consistent with the program control method.

[0095] The power-off process is the reverse of the power-on process, such as... Figure 9 As shown.

[0096] This invention can simultaneously measure and comprehensively analyze multiple parameters such as coil operating current and voltage status, energy storage status, power supply status, and mechanical characteristics of various types of operating mechanisms, and can store and recall both analytical and raw data. This invention is universally applicable to various operating mechanisms, adaptable to multiple types of operating mechanisms, covering both spring-operated and permanent magnet operating mechanisms, and can meet the needs of various types of permanent magnet operating mechanisms, such as single-coil energy storage permanent magnet operating mechanisms, single-coil non-energy storage permanent magnet operating mechanisms, double-coil energy storage permanent magnet operating mechanisms, and double-coil non-energy storage permanent magnet operating mechanisms. This invention can achieve network communication with other components or devices with communication functions to complete data transmission and realize remote signal transmission and control functions. The communication interface can be wired or wireless; the wired communication interface can be RS232, RS485, or Ethernet. The industrial control computer host of this invention can receive external keyboard signal input and touch screen signal input. Depending on the application scenario, this invention can be equipped with different sensors, extending to the testing and characteristic parameter extraction of circuit breakers such as leakage current, mechanical life, loop resistance, temperature rise, and partial discharge.

[0097] This invention, relying on industrial control computers and circuit control, along with the acquisition and characteristic value analysis of various raw state quantities, achieves a comprehensive, integrated, automated, and one-click control design for the testing process of vacuum circuit breakers. It can specifically perform parameter matching and setting, power output scheduling, operation timing control, data acquisition, storage and comparative analysis, fault logic judgment and alarm functions for various types of tests. This provides crucial intelligent equipment support and effective data for the testing and in-depth research of vacuum circuit breakers and their operating mechanisms.

[0098] By unifying the definition of data formats and communication protocols, data management has been standardized and regulated. From source data, master data, data standards, data quality, to data processing and data application permissions, hardware and software technologies such as computers and high-precision sensors are used to effectively collect, store, process and apply data, and build a test database for the entire life cycle of circuit breaker products. This provides a certain amount of data foundation and application value for the research and analysis of circuit breaker products in various industries.

[0099] Based on the test data collected from the relevant test content and test items, the system program calculates and processes the data to form a comprehensive perspective planar graph constructed from multiple dimensions of variables such as state variables, displacement variables, time variables, velocity variables, and current and voltage changes. This helps to study the relationship between various changes in the circuit breaker and the chain reaction. By comparing the graph with the proposed standard range of the reference domain, the system studies the weak links and hidden dangers in the entire operation process of the circuit breaker, providing objective support for its full life cycle health management and monitoring system.

[0100] Based on the same concept, embodiments of the present invention also provide a control method for the operating mechanism data acquisition system as described above, comprising the following steps:

[0101] Step S101: During the test, the I / O module of the data acquisition loop unit acquires the contact status signal of the circuit breaker under test;

[0102] Step S102: The data processing and display unit determines whether the circuit breaker under test is in the open or closed state based on the contact status signal collected by the I / O module, and generates a closing control command or an opening control command.

[0103] Step S103: Control the closing control circuit of the tested operating mechanism to be connected according to the closing control command, or control the opening control circuit of the tested operating mechanism to be connected according to the opening control command.

[0104] Step S104: The data acquisition circuit unit acquires the closing control current signal or the opening control current signal, and then acquires the closing coil current signal or the opening coil current signal, the energy storage voltage signal and the contact displacement signal.

[0105] The method of this invention enables the generalization of control for operating mechanism testing, the integration of testing procedures, the automation of processes, and the one-click operation of multi-feature parameter data acquisition. It allows for comprehensive comparative analysis of the current and voltage status, energy storage status, power supply status, and mechanical characteristic status of the operating mechanism, resulting in high-quality dynamic holographic raw data. This reduces time costs, improves manual efficiency, promotes the technological advancement of circuit breaker operating mechanism testing methods, and provides effective data support for the research of various types of operating mechanisms and circuit breakers, as well as the development of intelligent power systems and power equipment condition monitoring technologies.

[0106] The above description only discloses specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or modifications that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A drive circuit module, characterized by: The drive circuit module includes a high-voltage DC power supply HM, a high-voltage DC power supply KM, a power adapter DP, an embedded control module QK, a control adapter HT, a power supply and discharge circuit, a closing / opening knob KK, and a rotary switch ZH2. The input terminals of the high-voltage DC power supply HM, the high-voltage DC power supply KM, and the power adapter DP are all connected to the output terminal of the AC power circuit unit. The high-voltage DC power supply HM, the high-voltage DC power supply KM, and the embedded control module QK are communicatively connected to the data processing and display unit. The output terminal of the high-voltage DC power supply HM is connected to the normally open contact KMC2-1 / KMC2-2 of the contactor KMC2 in the power supply and discharge circuit. The output terminal of the high-voltage DC power supply KM is connected to the normally open contact KMC3-1 / KMC3-2 of the contactor KMC3 in the power supply and discharge circuit. The output terminal of the power adapter DP is connected to the power supply terminal of the embedded control module QK. One end K21 / K31 of the control contacts K2 / K3 of the embedded control module QK, the normally open contact KMC2-2 of contactor KMC2 in the power supply and discharge circuit, and the normally open contact KMC3-2 of contactor KMC3 output closing or opening control commands through the control adapter HT; the normally open contact KMC2-1 of contactor KMC2 in the power supply and discharge circuit and the normally closed contact KMC4-3 of contactor KMC4 charge the energy storage power supply through the control adapter HT; the energy release resistor Rf in the power supply and discharge circuit and the normally open contact KMC4-1 of contactor KMC4 are also connected to the energy storage circuit through the control adapter HT; One end of each of the two normally closed switches of the rotary switch ZH2 is connected to the other end of the control contacts K2 / K3 of the embedded control module QK, K20 / K30, respectively. The other end of each of the two normally closed switches of the rotary switch ZH2 is connected to the normally open contact KMC2-1 of contactor KMC2 and the normally open contact KMC3-1 of contactor KMC3 in the power supply and discharge circuit, respectively. One end of each of the two normally open switches of the rotary switch ZH2 is connected to one end of the control contacts K2 / K3 of the embedded control module QK, K21 / K31, via the opening and closing knob KK. The other end of each of the two normally open switches of the rotary switch ZH2 is connected to the normally open contact KMC2-1 of contactor KMC2 and the normally open contact KMC3-1 of contactor KMC3 in the power supply and discharge circuit, respectively.

2. The drive circuit module of claim 1, wherein: The power supply and discharge circuit includes an embedded control module open contact QK-K1, a rotary switch ZH3, a button SB, contactors KMC2, KMC3, and KMC4, an indicator light ZD, and a release resistor Rf. The embedded control module open contact QK-K1 is connected in parallel with the button SB and then in series with the coil of contactor KMC4 to form a first branch. One normally open switch of the rotary switch ZH3 is connected in series with the coil of contactor KMC2 to form a second branch. The other normally open switch of the rotary switch ZH3 is connected in series with the coil of contactor KMC3 to form a third branch. The normally open contact KMC3-3 of contactor KMC3 is connected in series with the indicator light ZD to form a fourth branch. The first, second, third, and fourth branches are connected in parallel and then connected to the output terminal of the AC power supply circuit unit. The normally closed contact KMC4-3 of contactor KMC4 is connected to the normally open contact KMC2-2 of contactor KMC2, and the release resistor Rf is connected to the normally closed contact KMC4-1 of contactor KMC4.

3. An operating mechanism data acquisition system characterized by: The system includes the drive circuit module as described in claim 1 or 2.

4. A drive control method of the drive circuit module according to claim 1 or 2, characterized by, The method includes the following steps: When the operation is program-controlled, the control contact K2 in the embedded control module QK is closed according to the closing control command issued by the industrial control computer host, thereby connecting the closing control circuit of the tested operating mechanism; the control contact K3 in the embedded control module QK is closed according to the opening control command issued by the industrial control computer host, thereby connecting the opening control circuit of the tested operating mechanism. When manually controlled, the normally closed switch of the rotary switch ZH2 is opened and the normally open switch is closed. According to the displayed opening status, the closing / opening knob KK is rotated to the closing position to connect the closing control circuit of the tested operating mechanism; according to the displayed closing status, the closing / opening knob KK is rotated to the opening position to connect the opening control circuit of the tested operating mechanism.

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