A multi-scenario online reconstruction system for testing power supply and its control method

Abstract

The present invention provides a test power supply multi-scenario online reconstruction system and a control method thereof, which are used to solve the technical problem that the traditional test power supply system has limited test, detection and certification scope scenarios, resulting in low test power supply system utilization, and thus increasing the cost of testing and detection and certification of new energy equipment. The reconstruction system of the present invention includes a reconstruction control system, a reconstruction device, a test power supply unit and a test station unit; the reconstruction control system is communicatively connected to the reconstruction device, the test power supply and the test station respectively, and is used to reconstruct the test power supply information according to the station configuration information, and send the reconstruction information to the target test power supply, the reconstruction device and the test station; the reconstruction device is power-connected to the test power supply and the test station respectively, and is used to drive the internal series-parallel switch according to the reconstruction information to reorganize the output of each test power supply and connect it to the test station where the test equipment is located, and transmit the output voltage information of the test station to the reconstruction control system.

Description

Technical Field

[0001] The present invention relates to a test power supply system, and in particular to a test power supply multi-scenario online reconstruction system and a control method thereof. Background Art

[0002] With the development of new technologies and materials, the capacity and penetration of renewable energy power generation continue to increase. Consequently, the power requirements of renewable energy power generation equipment and their adaptability to complex power grid environments are also increasing. The motors, electronic controls, and power batteries in new energy vehicles are all moving towards higher power density, higher voltage, and higher power. Fast-charging technology for charging stations is also constantly upgrading. These development trends will drive the development of test power supplies that meet higher power and wider range requirements. Simultaneously, the demand for production testing, inspection, and certification of new energy equipment is also increasing.

[0003] During the R&D, production, and testing and certification of new energy equipment, power and voltage levels vary depending on the equipment's specifications and models, requiring different test power supplies for production testing or testing and certification. Traditional test power supply systems, however, have limited scope and scenarios for testing, testing, and certification, resulting in low test power supply utilization and increasing the cost of testing and certification for new energy equipment. Summary of the Invention

[0004] The purpose of the present invention is to solve the technical problem that the testing, detection and certification scope and scenarios of traditional test power supply systems are relatively limited, resulting in low utilization of the test power supply system and thus increasing the investment cost of testing and detection and certification of new energy equipment, and to provide a test power supply multi-scenario online reconstruction system.

[0005] In order to achieve the above objectives, the technical solutions of the present invention are:

[0006] A multi-scenario online reconfiguration system for a test power supply, which is special in that it includes a reconfiguration control system, a reconfiguration device, a test power supply unit, and a test station unit;

[0007] The test power supply unit includes a plurality of test power supplies;

[0008] The test station unit includes at least one test station;

[0009] The reconstruction control system is communicatively connected with the reconstruction device, the multiple test power supplies, and each test station, and is used to monitor the status of the test power supplies, reconstruct the test power supplies according to the required parameters sent by the test station where the test device is located, and send the reconstruction information of the test power supplies to the target test power supplies, the reconstruction device, and the test station where the test device is located; the target test power supplies are at least two test power supplies selected by information reconstruction;

[0010] The reconstruction device is connected to the multiple test power supplies and each test station respectively, and is used to drive the internal series-parallel switch to reorganize the output of each test power supply and connect it to the test station where the test device is located according to the reconstruction information sent by the reconstruction control system, and transmit the output voltage information of the test station to the reconstruction control system;

[0011] The test power supply is used to identify its own working mode according to the reconstruction information distributed by the reconstruction control system, execute the test instructions, and output voltage and current; multiple test power supplies are connected to communicate with each other;

[0012] The test station is used to connect to the device under test, transmit the station configuration information to the reconstruction control system, edit the test cases, control the test power supply to execute the test cases, and monitor the test process.

[0013] Furthermore, the reconstruction control system includes a multi-port switch, a reconstruction host computer and an interface conversion board respectively connected to the multi-port switch for communication;

[0014] The multi-port switch is also communicatively connected to the test power supply, the reconfiguration device and the test station respectively;

[0015] The reconstruction host computer is used to determine the reconstruction information of the test power supply based on the station configuration information sent by the test station; and send the reconstruction information to the interface conversion board, the reconstruction device, the target test power supply and the corresponding test station through the multi-port switch; the reconstruction host computer is also used for the mutual exclusion logic permission management of the switch array, the status monitoring and permission management of the test power supply;

[0016] The interface conversion board is used for communicating with the reconstruction device and for sending the reconstruction device switch combination control signal determined by the reconstruction information to the reconstruction device.

[0017] Furthermore, the reconstruction device includes a control board, a digital IO interface board, and a switch array that are signal-connected in sequence;

[0018] The digital IO interface board is respectively connected to the multi-port switch and the interface conversion board, the switch array is connected to the test power supply power, and the control board drives the switch array through the digital IO interface board according to the instructions sent by the interface conversion board, so that multiple test power supplies perform functional reconstruction according to the reconstruction information.

[0019] Furthermore, the test power supply includes a control unit, an ACDC rectifier unit, an inverter unit, a parallel communication interface board, and a signal and communication expansion unit, which are respectively connected to the control unit signal; the signal and communication expansion unit is also respectively connected to the ACDC rectifier unit and the inverter unit signal;

[0020] The control unit is in communication with the multi-port switch and is used to control the test power supply to start running according to the test instructions and to control the entire device;

[0021] The ACDC rectifier unit is used to receive input power, convert the control drive signal, node signal, and communication signal generated by the rectification control algorithm into a DC power supply, and output the DC power supply to the corresponding inverter unit;

[0022] The inverter unit is connected to the switch array power supply, and is used to generate a control drive signal according to the input DC power supply and the inverter control algorithm, and convert the node signal into an inverter voltage and current, and output the inverter voltage and current to the switch array;

[0023] The control units of the multiple test power supplies are connected via respective parallel communication interface boards;

[0024] The target test power supply includes a test power supply as a host and at least one test power supply as a slave; the test power supply as the host generates a slave current setting instruction through the parallel current sharing control strategy of the parallel communication interface board, and transmits it to the control unit of the test power supply as the slave through optical fiber.

[0025] Furthermore, the test station includes a monitoring terminal host computer and a power distribution cabinet that are sequentially signal-connected;

[0026] The monitoring terminal host computer is connected to the multi-port switch for sending operation instructions to the control unit of the test power supply as the host through the multi-port switch to complete the editing and execution of the test case.

[0027] Furthermore, the reconstruction control system further includes an output compensation optical fiber communication interface board;

[0028] The test station also includes an output compensation acquisition optical fiber communication board;

[0029] Each output compensation acquisition fiber optic communication board is respectively connected to the output compensation fiber optic communication interface board by optical fiber, and the output compensation fiber optic communication interface board is respectively connected to the control units of multiple test power supplies by optical fiber, and is used to transmit the remote compensation data information collected by the output compensation acquisition fiber optic communication board to the output compensation fiber optic communication interface board by optical fiber communication, and further transmit it to the control unit of the test power supply serving as the host, so as to compensate for the long-distance transmission loss of the output parameters.

[0030] Furthermore, the control units of the plurality of test power supplies are connected via respective parallel communication interface board optical fibers;

[0031] The parallel optical fiber communication rate between the test power supply as the host and the test power supply as the slave is greater than or equal to 3 Gbps.

[0032] Furthermore, the communication rate between the test power supply as the host and the output compensation acquisition optical fiber communication board of the test station where the test device is located is greater than or equal to 10Msps.

[0033] The present invention also provides a control method for a multi-scenario online reconfiguration system for testing power supplies. The method is based on the above-mentioned multi-scenario online reconfiguration system for testing power supplies, and is special in that it includes the following steps:

[0034] 1] Reconstruct the control system to receive workstation configuration information

[0035] A test station is initially selected based on the capacity and voltage requirements of the device under test. The test station where the device under test is located sends the station configuration information to the reconstruction control system to apply for test resources. The reconstruction control system analyzes whether the currently idle test power supply and reconstruction device meet the requirements. If so, the idle test power supply is allocated to the test station and step 2 is performed. If not, the user changes a test station based on the capacity and voltage requirements of the device under test and re-applies for test resources until the requirements are met.

[0036] 2] Obtain the reconstruction information of the test power supply

[0037] The reconstruction control system obtains the reconstruction information of the test power supply according to the station configuration information, and sends the reconstruction information of the test power supply to the target test power supply and the reconstruction device;

[0038] 3] Control the target test power supply to connect to the device under test

[0039] The reconstruction device drives its related switch actions according to the received reconstruction information of the test power supply, so that the output of the target test power supply is connected in series and parallel, and then connected to the test station where the test device is located, so that the power connection between the test device and the target test power supply is established;

[0040] 4] The test station establishes a communication connection with the test power supply as the host

[0041] After completing the above steps, the test station where the test device is located establishes a communication connection with the test power supply as the host through the reconstruction control system, which is used to control the test power supply as the host to execute test cases and monitor the test process during the test;

[0042] 5] As the host test power supply, it receives the operation instructions issued by the test station

[0043] The user sends an operating instruction to the test power supply as the master through the test station; the test power supply as the master receives the operating instruction and generates a slave given and control instruction and sends it to the test power supply as the slave;

[0044] 6] After receiving the operation instruction, all target test power supplies are connected to the input power supply, output voltage and current to the test station (4) where the test equipment is located, and the test equipment is powered on;

[0045] 7] The test station (4) where the test device is located sends the test instructions to the test power supply (3) as the host in the form of communication, and then sends them to the test power supply (3) as the slave. All target test power supplies execute according to the test case.

[0046] Furthermore, step 4] also includes: establishing a compensation optical fiber communication connection between the test station where the test device is located and the test power supply serving as the host, so as to distribute the output compensation information collected by the test station where the test device is located to the test power supply serving as the host during the test, and the test power supply serving as the host compensates the output accuracy according to the output compensation information.

[0047] The beneficial effects of the present invention compared to the prior art are:

[0048] 1. The present invention provides a multi-scenario online reconstruction system for a test power supply. Compared with the prior art, the present invention can receive the test station configuration information of the test equipment through a reconstruction control system, and reconstruct the test power information according to the occupancy of the current test power supply and the switch array of the reconstruction device, and then allocate it to the test station where the test equipment is located, providing support for the testing requirements of multiple stations, multiple capacities, and multiple voltage levels, making the testing, inspection and certification scope of the test power system and the scope of scene application wider. At the same time, it also improves the utilization rate of the test power system, thereby reducing the investment cost of testing and inspection and certification of new energy equipment, and accelerating the inspection and testing efficiency of new energy equipment.

[0049] 2. The present invention provides a multi-scenario online reconstruction system for testing power supplies, which can provide multiple test stations, and each test station can carry out testing work on test equipment with different capacities and different voltage levels, and some test stations can be used online at the same time.

[0050] 3. The present invention provides a test power supply multi-scenario online reconstruction system. The test power supply as the host can receive the remote compensation data information output by the output compensation acquisition optical fiber communication board at the test station where the test equipment is located, and compensate for the long-distance transmission loss of the output parameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 This is a schematic diagram of a multi-scenario online reconstruction system for testing power supplies according to the present invention;

[0052] Figure 2 This is a schematic diagram of the structure of a reconstructed control system in an embodiment of the present invention;

[0053] Figure 3 This is a schematic diagram of the structure of a reconstruction device in an embodiment of the present invention;

[0054] Figure 4 This is a schematic diagram of the test station structure in an embodiment of the present invention;

[0055] Figure 5 A schematic diagram of a test power supply structure in an embodiment of the present invention;

[0056] Figure 6 This is a schematic diagram of the internal connections of the reconstruction control system, reconstruction device, test station, and test power supply in an embodiment of the present invention;

[0057] Figure 7 This is a flowchart of an embodiment of a system for online reconfiguration of a power supply for testing multiple scenarios according to the present invention;

[0058] Figure 8 A schematic diagram of a reconstruction connection of an embodiment of a multi-scenario online reconstruction system for testing power supplies according to the present invention;

[0059] Figure 9 This is a schematic diagram of a reconstruction result of an embodiment of a multi-scenario online reconstruction system for testing power supplies of the present invention.

[0060] The specific drawings are as follows:

[0061] 1-reconstruction control system, 11-reconstruction host computer, 12-multi-port switch, 13-interface conversion board, 14-output compensation optical fiber communication interface board;

[0062] 2-reconstruction device, 21-control board, 22-digital IO interface board, 23-switch array;

[0063] 3-test power supply, 31-ACDC rectifier unit, 32-control unit, 33-inverter unit, 34-signal and communication expansion unit, 35-parallel communication interface board;

[0064] 4-test station, 41-monitoring terminal host computer, 42-power distribution cabinet, 43-output compensation acquisition optical fiber communication board. DETAILED DESCRIPTION

[0065] In order to make the advantages and features of the present invention more clear, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0066] like Figure 1As shown, a test power supply multi-scenario online reconstruction system includes a reconstruction control system 1, a reconstruction device 2, a test power supply unit and a test station unit; wherein the test power supply unit includes multiple test power supplies 3, and the test station unit includes at least one test station 4. The reconstruction control system 1 and the reconstruction device 2, the multiple test power supplies 3 and the multiple test stations 4 are connected by Ethernet communication respectively; at the same time, the reconstruction control system 1 and the reconstruction device 2 are connected by optical fiber, and the reconstruction control system 1 and the multiple test power supplies 3 and each test station 4 are connected by compensation optical fiber; the reconstruction device 2 and the multiple test power supplies 3 and each test station 4 are connected by power; and the multiple test power supplies 3 are connected by parallel optical fiber. It can be understood that the communication connection method of each module in this embodiment is only used to illustrate its working principle and preferred method, and is not a limitation on its connection method. The reconstruction control system 1 is used to select and combine multiple test power supplies 3 in the test power supply unit based on the capacity, voltage, current and other parameters of the test device, obtain reconstruction information of the multiple test power supplies 3, and send the reconstruction information of the test power supplies 3 to the target test power supplies, the reconstruction device 2 and the test station 4 where the test device is located; wherein the target test power supplies are at least two test power supplies 3 obtained through information reconstruction selection. Specifically, the reconstruction information is the distribution information of the test power supplies 3, including the number of target test power supplies, the determination of the test power supplies 3 as the master and slave, and the series and parallel relationship between them. The reconstruction control system 1 is also used to collect and display the operating information of all test power supplies 3, and transmit the information, control instructions and control parameters of the target test power supplies. The reconstruction device 2 is used to drive the internal series-parallel switch according to the reconstruction information sent by the reconstruction control system 1 to reorganize the output of the target test power supply and connect it to the test station 4 where the test device is located, and transmit the output voltage information of the test station 4 to the reconstruction control system 1. The test power supply 3 is used to identify its own working mode according to the reconstruction information sent by the reconstruction control system 1, determine the test power supply 3 as the host and the corresponding test power supply 3 as the slave, so as to execute the test instructions and output voltage, current and power. The test station 4 is used to connect to the test device, transmit the station configuration information to the reconstruction control system 1, edit the test case, and control the test power supply 3 as the host to execute the test case and monitor the test process. Multiple test stations 4 have the right to occupy all test power supplies 3, and the principle of first allocation first occupation is followed. The present invention receives the configuration information of the test station 4 where the test device is located through the reconstruction control system 1. The reconstruction control system 1 allocates the available test power supply 3 to the above-mentioned test station 4 according to the occupancy of the current test power supply 3 and the switch array of the reconstruction device 2, and establishes a communication connection between the above-mentioned test station 4 and the test power supply 3 as the host, and the test device on the above-mentioned test station 4 establishes a power connection with the allocated test power supply 3.The test power supply 3 as the host receives the test instruction from the test station 4 and outputs an inverter current to the device under test on the test station 4, thereby realizing power level interaction between the test power supply 3 and the device under test.

[0067] In order to better understand the technology and features of the present invention, the following section further explains the specific structures and functions of the reconstruction control system 1, the reconstruction device 2, the test power supply 3 and the test station 4.

[0068] Specifically, such as Figure 2 As shown, the reconstruction control system 1 includes a multi-port switch 12 and a reconstruction host computer 11, an interface conversion board 13 and an output compensation optical fiber communication interface board 14 respectively connected to the multi-port switch 12 via Ethernet communication. Figure 3 As shown, the reconstruction device 2 includes a control board 21, a digital IO interface board 22 and a switch array 23 which are connected in sequence. Figure 4 As shown, each test station 4 includes a monitoring terminal host computer 41, a power distribution cabinet 42 and an output compensation acquisition optical fiber communication board 43 which are sequentially connected. Figure 5 As shown, each test power supply 3 includes a control unit 32, an ACDC rectifier unit 31, an inverter unit 33, a parallel communication interface board 35, and a signal and communication expansion unit 34, each of which is connected to the control unit 32 for signal signals; the signal and communication expansion unit 34 is also connected to the ACDC rectifier unit 31 and the inverter unit 33 for signal signals. Specifically, Figure 6 As shown, the multi-port switch 12 is also connected to the digital IO interface board 22, multiple control units 32, and multiple monitoring terminal host computers 41 via Ethernet communication. The output compensation fiber optic communication interface board 14 is connected to multiple output compensation acquisition fiber optic communication boards 43 and multiple control units 32 via compensation optical fibers. The interface conversion board 13 is connected to the digital IO interface board 22 via optical fibers. The switch array 23 is connected to multiple inverter units 33 and multiple power distribution cabinets 42 via power supply connections. The multiple parallel communication interface boards 35 of multiple test power supplies 3 are connected in parallel via optical fibers.

[0069] The reconstruction host computer 11 is used for system configuration, that is, selecting multiple test power supplies 3 for combination according to the station configuration information sent by the test station 4 where the test device is located, obtaining reconstruction information of multiple target test power supplies, and sending the reconstruction information of the test power supplies 3 to the interface conversion board 13, the output compensation optical fiber communication interface board 14, the digital IO interface board 22, the control unit 32 of the target test power supply and the monitoring terminal host computer 41 of the test station 4 where the test device is located through the multi-port switch 12; the reconstruction host computer 11 is also used for the mutually exclusive logical permission management of the switch array 23 and the status monitoring and permission management of the test power supply 3, wherein the mutually exclusive logical permission management of the switch array 23 is the mutually exclusive logical permission management of the test power supply 3 and the reconstruction device 2, and the status monitoring of the test power supply 3 is the collection of the operating status information of all test power supplies 3. The interface conversion board 13 is used to send the action logic instructions of the switch array 23 determined by the reconstruction information to the digital IO interface board 22 of the reconstruction device 2 through optical fiber communication; the output compensation optical fiber communication interface board 14 is used to distribute the output voltage and current information of the output compensation acquisition optical fiber communication board 43 of the test station 4 where the test equipment is located to the control unit 32 of the test power supply 3 serving as the host, so as to establish a compensation optical fiber communication connection between the test station 4 and the test power supply 3 serving as the host, that is, to distribute the output compensation information to the control unit 32 serving as the host, and the control unit 32 serving as the host compensates the output accuracy according to the output compensation information.

[0070] The control board 21 and the digital IO interface board 22 control the operation of the switch array 23 according to the action logic instructions sent by the interface conversion board 13, and combine the outputs of multiple target test power supplies in series and parallel, so that the multiple target test power supplies can be functionally reorganized according to the reconstruction information. After the reorganization, the outputs are connected to the power distribution cabinet 42 of the test station 4 where the test equipment is located, thereby establishing a power connection between the test equipment and the target test power supply.

[0071] The control unit 32 is used to control the entire test power supply 3. By receiving test instructions from the monitoring terminal host computer 41, it generates control instructions for the ACDC rectifier unit 31, further converts them into drive signals, and transmits them to the ACDC rectifier unit 31 via the signal and communication expansion unit 34. The control unit 32 is also used to determine the series and parallel mode settings and master-slave relationships between multiple target test power supplies based on the reconstruction information, such as parallel master, parallel slave, series master, series slave, etc. It should be understood that these modes are only one of many combinations and do not limit the working relationship. The ACDC rectifier unit 31 is used to receive input power and convert it into a DC power supply through the control drive signal, node signal and communication signal generated by the rectification control algorithm, and then output the DC power supply to the inverter unit 33; the inverter unit 33 is used to convert the DC power supply input by the ACDC rectifier unit 31 and the control drive signal and node signal generated by the inverter control algorithm into an inverter voltage and current, and output the inverter voltage and current to the switch array 23; the control units 32 of each test power supply 3 are connected through their respective parallel communication interface boards 35. The control unit 32 as the host generates an inverter current setting instruction through the inverter closed-loop control, series-parallel current and voltage sharing algorithm, and transmits it to the control unit 32 as the slave through the optical fiber of the parallel communication interface board 35. The inverter units 33 of all target test power supplies simultaneously output the inverter current to the switch array 23, and then output it to the distribution cabinet 42 where the test equipment is located.

[0072] The monitoring terminal host computer 41 is used to edit test cases, control the test power supply 3 as the host to execute the test cases, and monitor the test process. The output end of the output compensation acquisition fiber optic communication board 43 is connected to the input end of the output compensation fiber optic communication interface board 14, and the output end of the output compensation fiber optic communication interface board 14 is connected to the input end of the control unit 32 of the test power supply 3 as the host. It is used to transmit the remote compensation data information sensed, collected and calculated by the output compensation acquisition fiber optic communication board 43 to the output compensation fiber optic communication interface board 14 via compensation fiber communication, and further transmit it to the control unit 32 of the test power supply 3 as the host to compensate for the long-distance transmission loss of the output parameters. At the same time, the test power supply 3 and the test station 4 are connected to the monitoring communication connection through the reconstruction control system 1. The monitoring terminal host computer 41 at the test station 4 where the test device is located can remotely control the test power supply 3 as the host. In this embodiment, the test power supply 3 as the host can receive test operation instructions from the monitoring terminal host computer 41 at the test station 4 where the test device is located, and complete the steady-state and transient output of voltage, current, and power required by the test case.

[0073] In addition, in this embodiment, the parallel optical fiber communication rate between the test power supply 3 as the host and the test power supply 3 as the slave is greater than or equal to 3Gbps, and the communication rate between the test power supply 3 as the host and the output compensation acquisition optical fiber communication board 43 of the test station 4 where the test equipment is located is greater than or equal to 10Msps.

[0074] Based on the above-mentioned test power multi-scenario online reconstruction system, the present invention also provides a control method for the test power multi-scenario online reconstruction system. It can be understood that the following description is only a specific example of the test power multi-scenario online reconstruction system control method in this embodiment and does not constitute a limitation. Figure 7 As shown, the specific steps include:

[0075] 1] The test equipment selects test station 4 and reconstructs the host computer 11 to receive the station configuration information

[0076] A test station 4 is preliminarily selected based on the capacity and voltage requirements of the test device. The monitoring terminal host computer 41 of the test station 4 where the test device is located sends the station configuration information to the reconstruction host computer 11 through the multi-port switch 12 to apply for test resources. The reconstruction host computer 11 analyzes whether the currently idle test power supplies 3 and switch arrays 23 meet the requirements; if so, the idle test power supplies are allocated to the test station 4 and step 2 is performed; if not, the occupancy status of the requested test resources is sent. The user replaces a test station 4 based on the capacity and voltage requirements of the test device and reapplies for test resources until the requirements are met.

[0077] 2] Obtain the reconstruction information of test power supply 3

[0078] The reconstruction host computer 11 obtains the reconstruction information of the test power supply 3 according to the workstation configuration information, that is, confirms the number of target test power supplies, the test power supplies 3 serving as the host and the slave, and the series-parallel mode between the test power supplies 3, and sends the reconstruction information of the test power supply 3 to the control unit 32 of the target test power supply; at the same time, the interface conversion board 13 sends the action logic instructions of the switch array 23 determined by the reconstruction information to the digital IO interface board 22 through optical fiber communication.

[0079] 3] Control the target test power supply to connect to the device under test

[0080] The control board 21 and the digital IO interface board 22 control the operation of the switch array 23 according to the action logic instructions, and combine the outputs of the target test power supply in series and parallel, so that the target test power supply can realize functional reorganization according to the reconstruction information. After the reorganization, its output is connected to the power distribution cabinet 42 of the test station 4 where the test equipment is located, so that a power connection is established between the test equipment and the target test power supply.

[0081] 4] The monitoring terminal host computer 41 establishes a communication connection with the test power supply 3 as the host

[0082] After completing the above steps, the monitoring terminal host computer 41 of the test station 4 where the test device is located establishes a communication connection with the control unit 32 of the test power supply 3 as the host through the multi-port switch 12, which is used to control the test power supply 3 as the host to execute test cases and monitor the test process during testing; at the same time, the system control switches the output of the output compensation acquisition fiber optic communication board 43 to the input of the output compensation fiber optic communication interface board 14, and switches the output of the output compensation fiber optic communication interface board 14 to the test power supply 3 as the host, so that a compensation fiber optic communication connection is established between the monitoring terminal host computer 41 of the test station 4 where the test device is located and the control unit 32 as the host, which is used to distribute the output compensation information collected by the output compensation acquisition fiber optic communication board 43 to the control unit 32 as the host during testing, and the control unit 32 as the host compensates the output accuracy according to the output compensation information.

[0083] 5] Test power supply 3 receives the operation instruction of monitoring terminal host computer 41

[0084] The user sends an operating instruction to the control unit 32 of the test power supply 3 as the host in the form of communication through the monitoring terminal host computer 41; the control unit 32 of the test power supply 3 as the host receives the operating instruction, and generates the given and control instructions of the slave, and sends them to the control unit 32 of the test power supply 3 as the slave through the parallel communication interface board 35.

[0085] 6] Target test power supply DC and inverter control

[0086] After receiving the operation instruction, the control unit 32 of each target test power supply turns on the input power supply, sends the start instruction to the corresponding ACDC rectifier unit 31 through the respective signal and communication expansion unit 34, generates DC power and outputs it to the corresponding inverter unit 33;

[0087] Each inverter unit 33 outputs the inverter current to the switch array 23 , and then outputs the inverter current to the device under test through the power distribution cabinet 42 where the device under test is located, and the device under test is powered on.

[0088] 7] The target test power supply 3 receives and runs the test instruction of the monitoring terminal host computer 41

[0089] After the above steps are completed, the user's test process can be started. The test instructions will be sent to the test power supply 3 in the form of communication through the monitoring terminal host computer 41, and the test power supply 3 will execute according to the test case.

[0090] The following is an example of the application of the online multi-scenario reconstruction system for the test power supply provided in this embodiment. Figure 8As shown, the test power supply 3 includes four 1.5MW / 2000V DC power sources. The switch array 23 of the reconstruction device 2 includes KM1, KM2-1, KM2-2, KM3, KM4, KM5, KM6, KM7, KM8, KM9, KM10, KM11, KM12, KM13, KM14-1, KM14-2, KM15, and KM16. KM2-1, KM2-2, KM14-1, and KM14-2 are used to connect the switches corresponding to the four DC power sources in series. FU1 and FU2 represent the first and second fuses, which are used to provide overcurrent protection for different power supply combination circuits. The switch array 23 is connected to five test stations 4, allowing the five test stations 4 to share the four test power sources 3. Each test station 4 can obtain one or more combinations of capacity and voltage. Therefore, each test station 4 can carry out testing work on equipment under test with different capacities and different voltage levels, and some test stations 4 can be used online at the same time. Figure 9 As shown, the reconstruction results of the online multi-scenario reconstruction system of the test power supply provided in this embodiment are schematically shown. Four 1.5MW single-machine DC power supplies complete the output with a capacity ranging from 1.5MW to 6MW and a voltage level of 0 to 2000V or 0 to 4000V, so that each test station 4 meets the output requirements of different capacities and different voltages.

[0091] The above description is only used to illustrate the technical solution of the present invention, rather than to limit it. For ordinary professional and technical personnel in this field, the specific technical solutions recorded in the above embodiments can be modified, or some of the technical features therein can be replaced by equivalents. These modifications or replacements do not cause the essence of the corresponding technical solution to deviate from the scope of the technical solution protected by the present invention.

Claims

1. A multi-scenario online reconfiguration system for testing power supply, characterized by: It comprises a reconstruction control system (1), a reconstruction device (2), a test power supply unit and a test station unit; The test power supply unit includes a plurality of test power supplies (3); The test station unit includes at least one test station (4); The reconstruction control system (1) is in communication with the reconstruction device (2), the plurality of test power supplies (3), and each test station (4), and is used to monitor the status of the test power supplies (3), reconstruct information of the test power supplies (3), and send the reconstruction information of the test power supplies (3) to the target test power supplies, the reconstruction device (2), and the test station (4) where the test equipment is located; the target test power supplies are at least two test power supplies (3) selected by information reconstruction; The reconstruction device (2) is connected to the plurality of test power supplies (3) and each test station (4) in power connection with each other, and is used to drive the internal series-parallel switch to reorganize the output of each test power supply (3) and connect it to the test station (4) where the test device is located according to the reconstruction information sent by the reconstruction control system (1), and transmit the output voltage information of the test station (4) to the reconstruction control system (1); The test power supply (3) is used to identify its own working mode according to the reconstruction information distributed by the reconstruction control system (1), execute the test instructions, and output voltage and current; a plurality of the test power supplies (3) are communicatively connected with each other; The test station (4) is used to connect to the device under test, transmit station configuration information to the reconstruction control system (1), edit test cases, control the test power supply (3) to execute the test cases, and monitor the test process; The reconstruction control system (1) comprises an output compensation optical fiber communication interface board (14); The test station (4) includes an output compensation acquisition optical fiber communication board (43); The test power supply (3) includes a control unit (32); Each output compensation acquisition optical fiber communication board (43) is respectively connected to an output compensation optical fiber communication interface board (14) by optical fiber, and the output compensation optical fiber communication interface board (14) is respectively connected to the control units (32) of a plurality of test power supplies (3) by optical fiber, and is used to transmit the remote compensation data information collected by the output compensation acquisition optical fiber communication board (43) to the output compensation optical fiber communication interface board (14) by optical fiber communication, and further transmit it to the control unit (32) of the test power supply (3) as a host, so as to compensate for the long-distance transmission loss of the output parameters.

2. A multi-scenario online reconfiguration system for testing power supply according to claim 1, characterized in that: The reconstruction control system (1) comprises a multi-port switch (12), a reconstruction host computer (11) and an interface conversion board (13) respectively connected to the multi-port switch (12); The multi-port switch (12) is also communicatively connected to the test power supply (3), the reconstruction device (2) and the test station (4) respectively; The reconstruction host computer (11) is used to determine the reconstruction information of the test power supply (3) according to the station configuration information sent by the test station (4); and send the reconstruction information to the interface conversion board (13), the reconstruction device (2), the target test power supply and the corresponding test station (4) through the multi-port switch (12); the reconstruction host computer (11) is also used for the mutual exclusion logic authority management of the switch array, the state monitoring and authority management of the test power supply (3); The interface conversion board (13) is in communication connection with the reconstruction device (2) and is used to send the reconstruction device switch combination control signal determined by the reconstruction information to the reconstruction device (2).

3. A multi-scenario online reconstruction system for testing power supply according to claim 2, characterized in that: The reconstruction device (2) comprises a control board (21), a digital IO interface board (22) and a switch array (23) which are sequentially signal-connected; The digital IO interface board (22) is respectively connected to the multi-port switch (12) and the interface conversion board (13), the switch array (23) is connected to the test power supply (3) power supply, and the control board (21) drives the switch array (23) to operate through the digital IO interface board (22) according to the instruction sent by the interface conversion board (13), so that the multiple test power supplies (3) perform functional reconstruction according to the reconstruction information.

4. A multi-scenario online reconfiguration system for testing power supply according to claim 3, characterized in that: The test power supply (3) comprises an ACDC rectifier unit (31), an inverter unit (33), a parallel communication interface board (35), and a signal and communication expansion unit (34) which are respectively connected to the control unit (32) by signal; the signal and communication expansion unit (34) is also respectively connected to the ACDC rectifier unit (31) and the inverter unit (33) by signal; The control unit (32) is in communication with the multi-port switch (12) and is used to control the start-up of the test power supply (3) according to the test instruction and to control the entire device; The ACDC rectifier unit (31) is used to receive input power, convert the control drive signal, node signal, and communication signal generated by the rectification control algorithm into a DC power supply, and output the DC power supply to the corresponding inverter unit (33); The inverter unit (33) is connected to the power supply of the switch array (23), and is used to generate a control drive signal according to the input DC power supply and the inverter control algorithm, and convert the node signal into an inverter voltage and current, and output the inverter voltage and current to the switch array (23); The control units (32) of the plurality of test power supplies (3) are connected via respective parallel communication interface boards (35); The target test power supply comprises a test power supply (3) as a host and at least one test power supply (3) as a slave; the test power supply (3) as the host generates a slave current setting instruction through a parallel current sharing control strategy of a parallel communication interface board (35), and transmits the instruction to a control unit (32) of the test power supply (3) as a slave.

5. The multi-scenario online reconfiguration system for testing power supply according to claim 4, characterized in that: The test station (4) includes a monitoring terminal host computer (41) and a power distribution cabinet (42) which are sequentially signal-connected; The monitoring terminal host computer (41) is in communication connection with the multi-port switch (12) and is used to send an operation instruction to the control unit (32) of the test power supply (3) as the host through the multi-port switch (12) to complete the editing and execution of the test case.

6. The multi-scenario online reconfiguration system for testing power supply according to claim 5, characterized in that: The control units (32) of the plurality of test power supplies (3) are connected to each other via respective parallel communication interface boards (35) optical fibers; The parallel optical fiber communication rate between the test power supply (3) serving as the host and the test power supply (3) serving as the slave is greater than or equal to 3 Gbps.

7. The multi-scenario online reconfiguration system for testing power supply according to claim 6, characterized in that: The communication rate between the test power supply (3) as the host and the output compensation acquisition optical fiber communication board (43) of the test station (4) where the test equipment is located is greater than or equal to 10Msps.

8. A control method for a test power supply multi-scenario online reconstruction system based on any one of claims 1 to 7, characterized in that: The following steps are involved: 1] Reconstruction control system (1) Receive station configuration information A test station (4) is preliminarily selected based on the capacity and voltage requirements of the device under test. The test station (4) where the device under test is located sends station configuration information to the reconstruction control system (1) to apply for test resources. The reconstruction control system (1) analyzes whether the currently idle test power supply (3) and the reconstruction device (2) meet the requirements. If so, the idle test power supply (3) is allocated to the test station (4), and step 2 is performed. If it is not satisfied, the user changes a test station (4) according to the capacity and voltage requirements of the device under test and re-applies for test resources until the requirements are met; 2] Obtain the reconstruction information of the test power supply (3) The reconstruction control system (1) obtains reconstruction information of the test power supply (3) according to the station configuration information, and sends the reconstruction information of the test power supply (3) to the target test power supply and the reconstruction device (2); 3] Control the target test power supply to connect to the device under test The reconstruction device (2) drives the relevant switch action of the test power supply (3) according to the received reconstruction information, so that the output of the target test power supply is connected in series and parallel, and then connected to the test station (4) where the test device is located, so that a power connection is established between the test device and the target test power supply; 4] The test station (4) establishes a communication connection with the test power supply (3) as the host The test station (4) where the test equipment is located establishes a communication connection with the test power supply (3) serving as the host through the reconstruction control system (1); 5] The test power supply (3) as the host receives the operation instructions issued by the test station (4) The user sends an operation instruction to the test power supply (3) as the master through the test station (4); the test power supply (3) as the master receives the operation instruction, and generates a given and control instruction of the slave and sends it to the test power supply (3) as the slave; 6] After receiving the operation instruction, all target test power supplies are connected to the input power supply, output voltage and current to the test station (4) where the test equipment is located, and the test equipment is powered on; 7] The target test power supply receives and runs the test command The test station (4) where the device under test is located sends the test instruction to the test power supply (3) as the host in the form of communication, and then sends it to the test power supply (3) as the slave, and all target test power supplies execute according to the test case.

9. The control method for a multi-scenario online reconfiguration system for testing power supply according to claim 8, characterized in that: Step 4] also includes: establishing a compensation optical fiber communication connection between the test station (4) where the test equipment is located and the test power supply (3) serving as the host.

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