Test system and method for dynamic voltage recovery device

Abstract

The present invention relates to the technical field of system testing, and specifically discloses a testing system and method for a dynamic voltage recovery device. The testing system comprises a power supply simulation unit for simulating different power supply conditions of the dynamic voltage recovery device, a load simulation unit for simulating different load conditions of the dynamic voltage recovery device, and a testing unit for controlling the states of the power supply simulation unit and the load simulation unit and collecting operating state information of the dynamic voltage recovery device. The testing system can simulate different power supply conditions of the dynamic voltage recovery device and different load conditions of the dynamic voltage recovery device only by manipulating the testing unit, thereby avoiding the problems of misoperation and cumbersome operation caused by manual operation, and improving the accuracy and simplicity of the test; at the same time, the testing unit can accurately record the test data such as the time and state of each condition, thereby avoiding the problems of errors and cumbersome recording caused by manual recording, and improving the accuracy and simplicity of the test record.

Description

Technical Field

[0001] The present invention relates to the technical field of system testing, and in particular to a testing system and method for a dynamic voltage recovery device. Background Art

[0002] DVR (Dynamic voltage restorer) is a series compensation device with an energy storage device (system). In addition to reactive power, it has the ability to compensate for active power. The dynamic voltage restorer has a fast response speed and can ensure that the voltage waveform on the load side is a standard sine wave, eliminating the impact of voltage harmonics and voltage fluctuations and flickers on the load.

[0003] In order to ensure the normal operation of the dynamic voltage restorer, it is necessary to test it frequently. At present, most of the tests on the dynamic voltage restorer are completed by manual operation of the operator. This is not only prone to misoperation, but also when manually simulating various working conditions, each working condition switch requires changing the electrical circuit, which is a large workload. At the same time, during manual testing, it is impossible to accurately record the time, status and other test data of each working condition. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art.

[0005] To this end, an object of the present invention is to propose a test system for a dynamic voltage recovery device, which can control the power supply simulation unit to simulate different power supply conditions of the dynamic voltage recovery device, and control the load simulation unit to simulate different load conditions of the dynamic voltage recovery device only by manipulating the test unit, thereby avoiding misoperation and cumbersome operation caused by manual operation, and improving the accuracy and simplicity of the test; at the same time, the test unit can be used to accurately record test data such as time and status of each condition, thereby avoiding errors and cumbersome recording caused by manual recording, and improving the accuracy and simplicity of the test records.

[0006] Therefore, a second objective of the present invention is to provide a testing method for a dynamic voltage recovery device.

[0007] To achieve the above-mentioned objectives, the first aspect of the embodiment of the present invention discloses a test system for a dynamic voltage recovery device, comprising: a power supply simulation unit, connected to the power supply side of the dynamic voltage recovery device, the power supply simulation unit being used to simulate different power supply conditions of the dynamic voltage recovery device according to its own different states; a load simulation unit, connected to the load side of the dynamic voltage recovery device, the load simulation unit being used to simulate different load conditions of the dynamic voltage recovery device according to its own different states; a test unit, respectively connected to the power supply simulation unit, the load simulation unit and the dynamic voltage recovery device, the test unit being used to control the state of the power supply simulation unit and the state of the load simulation unit, and the test unit being further used to collect operating status information of the dynamic voltage recovery device under different power supply conditions and different load conditions.

[0008] According to the test system of the dynamic voltage recovery device provided by the embodiment of the present invention, a power supply simulation unit is connected to the power supply side of the dynamic voltage recovery device, and the different states of the power supply simulation unit are switched by the test unit to simulate different power supply conditions of the dynamic voltage recovery device; at the same time, a load simulation unit is connected to the load side of the dynamic voltage recovery device, and the different states of the load simulation unit are switched by the test unit to simulate different load conditions of the dynamic voltage recovery device; finally, the test unit is used to collect the operating status information of the dynamic voltage recovery device under different power supply conditions and different load conditions, thereby completing the test of the dynamic voltage recovery device.

[0009] In this way, according to the test system of the dynamic voltage recovery device provided in the embodiment of the present invention, only by manipulating the test unit, it is possible to control the power supply simulation unit to simulate different power supply conditions of the dynamic voltage recovery device, and control the load simulation unit to simulate different load conditions of the dynamic voltage recovery device, thereby avoiding misoperation and cumbersome operation caused by manual operation, and improving the accuracy and simplicity of the test; at the same time, the test unit can be used to accurately record test data such as time and status of each condition, thereby avoiding errors and cumbersome recording caused by manual recording, and improving the accuracy and simplicity of the test records.

[0010] In addition, the test system of the dynamic voltage recovery device of the above embodiment of the present invention may also include the following additional technical features:

[0011] In some examples, the test unit is also used to monitor the fault state of the dynamic voltage recovery device, and control the connection state of the power supply simulation unit and the dynamic voltage recovery device, as well as the connection state of the load simulation unit and the dynamic voltage recovery device according to the fault state; wherein, when the dynamic voltage recovery device fails, the test unit controls the power supply simulation unit and the dynamic voltage recovery device to be disconnected, and controls the load simulation unit and the dynamic voltage recovery device to be disconnected.

[0012] In some examples, the power supply simulation unit includes a circuit breaker and multiple contactors; the test unit controls the power supply simulation unit to output different power supply states by controlling the opening and closing states of the circuit breaker and the multiple contactors, thereby simulating different power supply conditions of the dynamic voltage recovery device, wherein the different power supply states include different voltage states and / or different phase loss states.

[0013] In some examples, the power supply side of the dynamic voltage recovery device is connected to the power supply through a three-phase power supply line, the three-phase power supply line includes a first phase line, a second phase line and a third phase line, and the first phase line is connected in series with a first resistor and a second resistor, the second phase line is connected in series with a third resistor and a fourth resistor, and the third phase line is connected in series with a fifth resistor and a sixth resistor; the power supply simulation unit includes: a first three-phase circuit breaker, including a first single-phase circuit breaker, a second single-phase circuit breaker and a third single-phase circuit breaker, the first single-phase circuit breaker is connected in series with the first phase line, the second single-phase circuit breaker is connected in series with the second phase line, and the third single-phase circuit breaker is connected in series with the third phase line. On the third-phase wire, the first three-phase circuit breaker is used to simultaneously control the first single-phase circuit breaker, the second single-phase circuit breaker and the third single-phase circuit breaker, so as to control the on-off state of the power supply and the dynamic voltage recovery device; the first three-phase contactor includes a first single-phase contactor, a second single-phase contactor and a third single-phase contactor, one end of the first single-phase contactor is connected to one end of the first resistor, the other end of the first single-phase contactor is connected to one end of the second resistor, and the other end of the first resistor is connected to the other end of the second resistor, one end of the second single-phase contactor is connected to one end of the third resistor, and the other end of the second single-phase contactor is connected to the fourth circuit The first three-phase contactor is used to simultaneously control the first single-phase contactor, the second single-phase contactor and the third single-phase contactor, thereby simultaneously controlling the access state of the first resistor, the second resistor, the third resistor, the fourth resistor, the fifth resistor and the sixth resistor; the second three-phase contactor includes a fourth single-phase contactor, a fifth single-phase contactor and a sixth single-phase contactor. contactor, one end of the fourth single-phase contactor is connected to one end of the first resistor, the other end of the fourth single-phase contactor is connected to the other end of the first resistor, one end of the fifth single-phase contactor is connected to one end of the third resistor, the other end of the fifth single-phase contactor is connected to the other end of the third resistor, one end of the sixth single-phase contactor is connected to one end of the fifth resistor, the other end of the sixth single-phase contactor is connected to the other end of the fifth resistor, and the second three-phase contactor is used to simultaneously control the fourth single-phase contactor, the fifth single-phase contactor and the sixth single-phase contactor, thereby simultaneously controlling the access status of the first resistor, the third resistor and the fifth resistor;A seventh single-phase contactor, one end of the seventh single-phase contactor is connected to one end of the first resistor, the other end of the seventh single-phase contactor is connected to one end of the second resistor, and the other end of the first resistor is connected to the other end of the second resistor, and the seventh single-phase contactor is used to simultaneously control the access state of the first resistor and the second resistor; an eighth single-phase contactor, one end of the eighth single-phase contactor is connected to one end of the third resistor, the other end of the eighth single-phase contactor is connected to one end of the fourth resistor, and the other end of the third resistor is connected to the other end of the fourth resistor, and the eighth single-phase contactor is used to simultaneously control the access state of the third resistor and the fourth resistor. ;

[0014] In some examples, when controlling the opening and closing states of the circuit breaker and the plurality of contactors to control the power supply simulation unit to output different power supply states, thereby simulating different power supply conditions of the dynamic voltage recovery device, the test unit is configured to: control the first three-phase circuit breaker and the first three-phase contactor to be turned on, and control the second three-phase contactor, the seventh single-phase contactor and the eighth single-phase contactor to be turned off, thereby simulating normal power supply of the dynamic voltage recovery device; or, control the first three-phase circuit breaker, the first three-phase contactor, the second three-phase contactor, the seventh single-phase contactor and the eighth single-phase contactor to be turned off, thereby simulating power failure of the dynamic voltage recovery device; or, control the first three-phase circuit breaker and the second three-phase contactor to be turned on, and control the first three-phase contactor, the seventh single-phase contactor and the eighth single-phase contactor to be turned off, thereby simulating a temporary power reduction of the dynamic voltage recovery device with a first voltage reduction degree; or, control the first three-phase circuit breaker to be turned on, and control the first The three-phase contactor, the second three-phase contactor, the seventh single-phase contactor and the eighth single-phase contactor are disconnected, thereby simulating the dynamic voltage recovery device to perform a temporary reduction in power supply with a second voltage reduction degree, wherein the voltage reduction amplitude of the second voltage reduction degree is greater than the voltage reduction amplitude of the first voltage reduction degree; or, the first three-phase circuit breaker, the seventh single-phase contactor and the eighth single-phase contactor are controlled to be turned on, and the first three-phase contactor and the second three-phase contactor are controlled to be disconnected, thereby simulating the dynamic voltage recovery device to perform single-phase phase-loss power supply; or, the first three-phase circuit breaker and the seventh single-phase contactor are controlled to be turned on, and the first three-phase contactor, the second three-phase contactor and the eighth single-phase contactor are controlled to be disconnected, thereby simulating the dynamic voltage recovery device to perform two-phase phase-loss power supply; or, the first three-phase circuit breaker and the eighth single-phase contactor are controlled to be turned on, and the first three-phase contactor, the second three-phase contactor and the seventh single-phase contactor are controlled to be disconnected, thereby simulating the dynamic voltage recovery device to perform two-phase phase-loss power supply.

[0015] In some examples, the load simulation unit includes an inductor module and multiple resistor modules; the test unit controls the load simulation unit to output different resistance values ​​by controlling the access status of the inductor module and the multiple resistor modules, thereby simulating different load conditions of the dynamic voltage recovery device.

[0016] In some examples, the load side of the dynamic voltage recovery device is connected to the load through a three-phase load wire, and the three-phase load wire includes a fourth phase wire, a fifth phase wire and a sixth phase wire; the load simulation unit includes a first reactance module, a first resistance module and a second resistance module; wherein the first resistance module includes three seventh resistors and a second three-phase circuit breaker, and the three seventh resistors are respectively connected in series to the fourth phase wire, the fifth phase wire and the sixth phase wire, and the second three-phase circuit breaker includes a fourth single-phase circuit breaker, a fifth single-phase circuit breaker and a sixth single-phase circuit breaker, and the fourth single-phase circuit breaker is connected in series to the fourth phase wire, the fifth single-phase circuit breaker is connected in series to the fifth phase wire, and the sixth single-phase circuit breaker is connected in series to the sixth phase wire, and the second three-phase circuit breaker is used to simultaneously control the access status of the three seventh resistors, thereby controlling the access status of the first resistance module; the second resistance module includes three eighth resistors and a third three-phase circuit breaker, and the three eighth resistors are respectively connected in series to the fourth phase wire, the fifth phase wire and the sixth phase wire On the six-phase electric wire, the third three-phase circuit breaker includes a seventh single-phase circuit breaker, an eighth single-phase circuit breaker and a ninth single-phase circuit breaker, the seventh single-phase circuit breaker is connected in series to the fourth phase electric wire, the eighth single-phase circuit breaker is connected in series to the fifth phase electric wire, and the ninth single-phase circuit breaker is connected in series to the sixth phase electric wire, and the third three-phase circuit breaker is used to simultaneously control the access status of the three eighth resistors, thereby controlling the access status of the second resistor module; the first reactance module includes three first reactances and a fourth three-phase circuit breaker, and the three first reactances are connected to the fourth phase electric wire. An inductor is respectively connected in series to the fourth-phase electric wire, the fifth-phase electric wire and the sixth-phase electric wire, the fourth three-phase circuit breaker includes a tenth single-phase circuit breaker, an eleventh single-phase circuit breaker and a twelfth single-phase circuit breaker, the tenth single-phase circuit breaker is connected in series to the fourth-phase electric wire, the eleventh single-phase circuit breaker is connected in series to the fifth-phase electric wire, the twelfth single-phase circuit breaker is connected in series to the sixth-phase electric wire, and the fourth three-phase circuit breaker is used to simultaneously control the access status of the three first inductors, thereby controlling the access status of the first inductor module.

[0017] In some examples, when controlling the load simulation unit to output different resistance values ​​by controlling the access status of the reactance module and the plurality of resistance modules, thereby simulating different load conditions of the dynamic voltage recovery device, the test unit is configured to: control the second three-phase circuit breaker, the third three-phase circuit breaker and the fourth three-phase circuit breaker to be turned on, so that the first resistance module, the second resistance module and the first reactance module are connected, thereby simulating a first load condition of the dynamic voltage recovery device; or, control the second three-phase circuit breaker and the third three-phase circuit breaker to be turned on, and the fourth three-phase circuit breaker to be disconnected, so that the first resistance module and the second resistance module are connected, and the first reactance module is not connected, thereby simulating a second load condition of the dynamic voltage recovery device; or, control the second three-phase circuit breaker and the fourth three-phase circuit breaker to be turned on, and the third three-phase circuit breaker to be disconnected, so that the first resistance module and the first reactance module are connected, and the second resistance module is not connected, thereby simulating a third load condition of the dynamic voltage recovery device; or, control the third three-phase circuit breaker and the fourth three-phase circuit breaker to be turned on, and the third three-phase circuit breaker to be disconnected, so that the first resistance module and the first reactance module are connected, and the second resistance module is not connected, thereby simulating a third load condition of the dynamic voltage recovery device. The circuit breaker and the fourth three-phase circuit breaker are turned on, and the second three-phase circuit breaker is turned off, so that the second resistance module and the first reactance module are connected, and the first resistance module is not connected, thereby simulating the fourth load condition of the dynamic voltage recovery device; or, the second three-phase circuit breaker is controlled to be turned on, and the third three-phase circuit breaker and the fourth three-phase circuit breaker are turned off, so that the first resistance module is connected, and the second resistance module and the first reactance module are not connected, thereby simulating the fifth load condition of the dynamic voltage recovery device; or, the third three-phase circuit breaker is controlled to be turned on, and the second three-phase circuit breaker and the fourth three-phase circuit breaker are turned off, so that the second resistance module is connected, and the first resistance module and the first reactance module are not connected, thereby simulating the sixth load condition of the dynamic voltage recovery device; or, the fourth three-phase circuit breaker is controlled to be turned on, and the second three-phase circuit breaker and the third three-phase circuit breaker are turned off, so that the first reactance module is connected, and the first resistance module and the second resistance module are not connected, thereby simulating the seventh load condition of the dynamic voltage recovery device.

[0018] In some examples, the test system of the dynamic voltage recovery device further includes: a test requirement input unit connected to the test unit, the test requirement input unit is used to provide an input interface, the interface is used to input test requirements so that the test unit controls the power supply simulation unit and the load simulation unit according to the input test requirements, wherein the test requirements include different power supply conditions and different load conditions.

[0019] To achieve the above-mentioned objectives, the second aspect of the embodiment of the present invention discloses a testing method for a dynamic voltage recovery device, comprising the following steps: simulating different power supply conditions of the dynamic voltage recovery device; simulating different load conditions of the dynamic voltage recovery device; and collecting operating status information of the dynamic voltage recovery device under the different power supply conditions and the different load conditions.

[0020] According to the testing method of the dynamic voltage recovery device of the embodiment of the present invention, the testing system of the dynamic voltage recovery device provided by the above-mentioned embodiment of the present invention is used, and a power supply simulation unit is connected to the power supply side of the dynamic voltage recovery device, and the different states of the power supply simulation unit are switched by the testing unit to simulate different power supply conditions of the dynamic voltage recovery device; at the same time, a load simulation unit is connected to the load side of the dynamic voltage recovery device, and the different states of the load simulation unit are switched by the testing unit to simulate different load conditions of the dynamic voltage recovery device; finally, the testing unit is used to collect the operating status information of the dynamic voltage recovery device under different power supply conditions and different load conditions, thereby completing the test of the dynamic voltage recovery device.

[0021] In this way, according to the testing method of the dynamic voltage recovery device provided in the embodiment of the present invention, only by manipulating the test unit, the power supply simulation unit can be controlled to simulate different power supply conditions of the dynamic voltage recovery device, and the load simulation unit can be controlled to simulate different load conditions of the dynamic voltage recovery device, thereby avoiding misoperation and cumbersome operation caused by manual operation, and improving the accuracy and simplicity of the test; at the same time, the test unit can be used to accurately record the time, status and other test data of each condition, thereby avoiding errors and cumbersome recording caused by manual recording, and improving the accuracy and simplicity of the test records.

[0022] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0024] Figure 1 is a structural schematic diagram of a test system for a dynamic voltage recovery device according to an embodiment of the present invention;

[0025] Figure 2 is a structural schematic diagram of a test system for a dynamic voltage recovery device according to a specific embodiment of the present invention;

[0026] Figure 3 is a structural schematic diagram of a power supply simulation unit according to a specific embodiment of the present invention;

[0027] Figure 4 is a structural schematic diagram of a load simulation unit according to a specific embodiment of the present invention;

[0028] Figure 5 is a structural schematic diagram of a test system for a dynamic voltage recovery device according to another embodiment of the present invention;

[0029] Figure 6 is a flow chart of a method for testing a dynamic voltage recovery device according to an embodiment of the present invention;

[0030] Figure 7 The figure is a flow chart of a method for testing a dynamic voltage recovery device according to a specific embodiment of the present invention.

[0031] Reference numerals: 100 - test system of dynamic voltage recovery device; 110 - power supply simulation unit; 120 - load simulation unit; 130 - test unit; 140 - test demand input unit; 1101 - first three-phase circuit breaker; 1102 - first three-phase contactor; 1103 - second three-phase contactor; 1104 - seventh single-phase contactor; 1105 - eighth single-phase contactor; 1201 - second three-phase circuit breaker; 1 202-third three-phase circuit breaker; 1203-fourth three-phase circuit breaker; 11011-first single-phase circuit breaker; 11012-second single-phase circuit breaker; 11013-third single-phase circuit breaker; 11021-first single-phase contactor; 11022-second single-phase contactor; 11023-third single-phase contactor; 11031-fourth single-phase contactor; 11032-fifth single-phase contactor; 11033-sixth single-phase contactor Phase contactor; 12011-fourth single-phase circuit breaker; 12012-fifth single-phase circuit breaker; 12013-sixth single-phase circuit breaker; 12021-seventh single-phase circuit breaker; 12022-eighth single-phase circuit breaker; 12023-ninth single-phase circuit breaker; 12031-tenth single-phase circuit breaker; 12032-eleventh single-phase circuit breaker; 12033-twelfth single-phase circuit breaker; L1-first phase wire; L2-second phase wire; L3-third phase wire; L4-fourth phase wire; L5-fifth phase wire; L6-sixth phase wire; XX1-first reactance module; RR1-first resistance module; RR2-second resistance module; R1-first resistance; R2-second resistance; R3-third resistance; R4-fourth resistance; R5-fifth resistance; R6-sixth resistance; R7-seventh resistance; R8-eighth resistance; X1-first reactance. DETAILED DESCRIPTION

[0032] Embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. Embodiments of the present invention are described in detail below.

[0033] Reference below Figure 1-Figure 7A testing system and method for a dynamic voltage recovery device according to an embodiment of the present invention are described.

[0034] Figure 1 FIG. 1 is a schematic diagram of a structure of a test system for a dynamic voltage recovery device according to an embodiment of the present invention. Figure 1 As shown, the test system 100 of the dynamic voltage recovery device includes: a power supply simulation unit 110, connected to the power supply side of the dynamic voltage recovery device, the power supply simulation unit 110 is used to simulate different power supply conditions of the dynamic voltage recovery device according to its own different states; a load simulation unit 120, connected to the load side of the dynamic voltage recovery device, the load simulation unit 120 is used to simulate different load conditions of the dynamic voltage recovery device according to its own different states; a test unit 130, respectively connected to the power supply simulation unit 110, the load simulation unit 120 and the dynamic voltage recovery device, the test unit 130 is used to control the state of the power supply simulation unit 110 and the state of the load simulation unit 120, and the test unit 130 is also used to collect the operating status information of the dynamic voltage recovery device under different power supply conditions and different load conditions.

[0035] Figure 2 FIG. 1 is a schematic diagram of a structure of a test system for a dynamic voltage recovery device according to a specific embodiment of the present invention. Figure 2 As shown, in a specific embodiment, the power supply simulation unit 110 is connected to the power supply side of the dynamic voltage recovery device, and is used to simulate different power supply conditions of the dynamic voltage recovery device according to its own different states. The different power supply conditions include, for example: normal power supply, power off, temporary power reduction of a first voltage reduction degree, temporary power reduction of a second voltage reduction degree, single-phase phase loss power supply and two-phase phase loss power supply, etc.

[0036] In a specific embodiment, the load simulation unit 120 is connected to the load side of the dynamic voltage recovery device, and is used to simulate different load conditions of the dynamic voltage recovery device according to its own different states. Different load conditions include, for example, the connection or non-connection of different resistances and different reactances.

[0037] Specifically, the test system 100 for the dynamic voltage recovery device provided in the embodiment of the present invention connects the power supply simulation unit 110 to the power supply side of the dynamic voltage recovery device, and uses the test unit 130 to switch the different states of the power supply simulation unit 110 to simulate different power supply conditions of the dynamic voltage recovery device; at the same time, the load simulation unit 120 is connected to the load side of the dynamic voltage recovery device, and uses the test unit 130 to switch the different states of the load simulation unit 120 to simulate different load conditions of the dynamic voltage recovery device; finally, the test unit 130 is used to collect the operating status information of the dynamic voltage recovery device under different power supply conditions and different load conditions, thereby completing the test of the dynamic voltage recovery device.

[0038] In this way, according to the test system 100 of the dynamic voltage recovery device provided in an embodiment of the present invention, only by manipulating the test unit 130, it is possible to control the power supply simulation unit 110 to simulate different power supply conditions of the dynamic voltage recovery device, and control the load simulation unit 120 to simulate different load conditions of the dynamic voltage recovery device, thereby avoiding misoperation and cumbersome operation caused by manual operation, and improving the accuracy and simplicity of the test; at the same time, by using the test unit 130, the time, status and other test data of each condition can be accurately recorded, thereby avoiding errors and cumbersome recording caused by manual recording, and improving the accuracy and simplicity of the test records.

[0039] In one embodiment of the present invention, the test unit 130 is also used to monitor the fault state of the dynamic voltage recovery device, and control the connection state between the power supply simulation unit 110 and the dynamic voltage recovery device, as well as the connection state between the load simulation unit 120 and the dynamic voltage recovery device according to the fault state; wherein, when the dynamic voltage recovery device fails, the test unit 130 controls the power supply simulation unit 110 and the dynamic voltage recovery device to be disconnected, and controls the load simulation unit 120 and the dynamic voltage recovery device to be disconnected.

[0040] Specifically, the test system 100 of the dynamic voltage recovery device provided by the embodiment of the present invention also uses the test unit 130 to monitor the fault state of the dynamic voltage recovery device, and controls the connection state of the power supply simulation unit 110 and the dynamic voltage recovery device according to the fault state, and controls the connection state of the load simulation unit 120 and the dynamic voltage recovery device. Specifically, when the dynamic voltage recovery device fails, the test unit 130 controls the power supply simulation unit 110 and the dynamic voltage recovery device to be disconnected, and controls the load simulation unit 120 and the dynamic voltage recovery device to be disconnected.

[0041] In this way, according to the test system 100 of the dynamic voltage recovery device provided by an embodiment of the present invention, when the dynamic voltage recovery device fails, the test unit 130 can promptly disconnect the power supply simulation unit 110 and the load simulation unit 120 from the dynamic voltage recovery device, thereby avoiding damage to the power supply simulation unit 110, the load simulation unit 120 and the dynamic voltage recovery device, thereby ensuring the safety of the equipment.

[0042] In one embodiment of the present invention, the power supply simulation unit 110 includes a circuit breaker and multiple contactors; the test unit 130 controls the power supply simulation unit 110 to output different power supply states by controlling the opening and closing states of the circuit breaker and the multiple contactors, thereby simulating different power supply conditions of the dynamic voltage recovery device, wherein different power supply states include different voltage states and / or different phase loss states.

[0043] In a specific embodiment, the state of the circuit breaker can be used to switch the on / off state of the dynamic voltage recovery device and the power supply, and the different states of multiple contactors can be used to switch the power supply state of the power supply to the dynamic voltage recovery device, such as different voltage states or different phase loss states.

[0044] Specifically, the test system 100 of the dynamic voltage recovery device provided by an embodiment of the present invention, wherein the power supply simulation unit 110 includes a circuit breaker and multiple contactors, and the test unit 130 controls the power supply simulation unit 110 to output different voltage states and / or different phase loss states by controlling the opening and closing states of the circuit breaker and the multiple contactors, so that the power supply simulation unit 110 can be used to simulate different power supply conditions of the dynamic voltage recovery device.

[0045] In one embodiment of the present invention, the power supply side of the dynamic voltage recovery device is connected to the power supply through a three-phase power supply wire, the three-phase power supply wire includes a first phase wire L1, a second phase wire L2 and a third phase wire L3, and the first phase wire L1 is connected in series with a first resistor R1 and a second resistor R2, the second phase wire L2 is connected in series with a third resistor R3 and a fourth resistor R4, and the third phase wire L3 is connected in series with a fifth resistor R5 and a sixth resistor R6; the power supply simulation unit 110 includes: a first three-phase circuit breaker 1101, including a first single-phase circuit breaker 11011, a second single-phase circuit breaker 11012, a second single-phase circuit breaker 11013, a first three-phase circuit breaker 11014, a second single-phase circuit breaker 11015, a first three-phase circuit breaker 11016, a second single-phase circuit breaker 11017, a first three-phase circuit breaker 11018, a second single-phase circuit breaker 11019, a first three-phase circuit breaker 11020, a second single-phase circuit breaker 11021, a first three-phase circuit breaker 11022, a second single-phase circuit breaker 11023, a first three-phase circuit breaker 11024, a second single-phase circuit breaker 11025, a first three-phase circuit breaker 11026, a second single-phase circuit breaker 11027, a first three-phase circuit breaker 11028, a second single-phase circuit breaker 11029, a first three-phase circuit breaker 11030, a second single-phase circuit breaker 11031, a first three-phase circuit breaker 11032, a second single-phase circuit breaker 11033, a first three-phase circuit The first three-phase contactor 1102 includes a first single-phase circuit breaker 11011, a second single-phase circuit breaker 11012, and a third single-phase circuit breaker 11013, wherein the first single-phase circuit breaker 11011 is connected in series to the first phase wire L1, the second single-phase circuit breaker 11012 is connected in series to the second phase wire L2, and the third single-phase circuit breaker 11013 is connected in series to the third phase wire L3. The first three-phase circuit breaker 1101 is used to simultaneously control the first single-phase circuit breaker 11011, the second single-phase circuit breaker 11012, and the third single-phase circuit breaker 11013, so as to control the on-off state of the power supply and the dynamic voltage recovery device; the first three-phase contactor 1102 includes a first single-phase circuit breaker 11012, and a third single-phase circuit breaker 11013. The first single-phase contactor 11021, the second single-phase contactor 11022 and the third single-phase contactor 11023, one end of the first single-phase contactor 11021 is connected to one end of the first resistor R1, the other end of the first single-phase contactor 11021 is connected to one end of the second resistor R2, and the other end of the first resistor R1 is connected to the other end of the second resistor R2, one end of the second single-phase contactor 11022 is connected to one end of the third resistor R3, the other end of the second single-phase contactor 11022 is connected to one end of the fourth resistor R4, and the other end of the third resistor R3 is connected to the other end of the fourth resistor R4. One end, one end of the third single-phase contactor 11023 is connected to one end of the fifth resistor R5, the other end of the third single-phase contactor 11023 is connected to one end of the sixth resistor R6, and the other end of the fifth resistor R5 is connected to the other end of the sixth resistor R6, the first three-phase contactor 1102 is used to simultaneously control the first single-phase contactor 11021, the second single-phase contactor 11022 and the third single-phase contactor 11023, thereby simultaneously controlling the access status of the first resistor R1, the second resistor R2, the third resistor R3, the fourth resistor R4, the fifth resistor R5 and the sixth resistor R6;The second three-phase contactor 1103 includes a fourth single-phase contactor 11031, a fifth single-phase contactor 11032 and a sixth single-phase contactor 11033, one end of the fourth single-phase contactor 11031 is connected to one end of the first resistor R1, the other end of the fourth single-phase contactor 11031 is connected to the other end of the first resistor R1, one end of the fifth single-phase contactor 11032 is connected to one end of the third resistor R3, the other end of the fifth single-phase contactor 11032 is connected to the other end of the third resistor R3, one end of the sixth single-phase contactor 11033 is connected to one end of the fifth resistor R5, and the other end of the sixth single-phase contactor 11033 is connected to the other end of the fifth resistor R5. The second three-phase contactor 1103 is used to simultaneously control the fourth single-phase contactor 11031, the fifth single-phase contactor 11032 and the sixth single-phase contactor 11033, so that Simultaneously control the access status of the first resistor R1, the third resistor R3 and the fifth resistor R5; the seventh single-phase contactor 1104, one end of the seventh single-phase contactor 1104 is connected to one end of the first resistor R1, the other end of the seventh single-phase contactor 1104 is connected to one end of the second resistor R2, and the other end of the first resistor R1 is connected to the other end of the second resistor R2, the seventh single-phase contactor 1104 is used to simultaneously control the access status of the first resistor R1 and the second resistor R2; the eighth single-phase contactor 1105, one end of the eighth single-phase contactor 1105 is connected to one end of the third resistor R3, the other end of the eighth single-phase contactor 1105 is connected to one end of the fourth resistor R4, and the other end of the third resistor R3 is connected to the other end of the fourth resistor R4, the eighth single-phase contactor 1105 is used to simultaneously control the access status of the third resistor R3 and the fourth resistor R4. ;

[0046] Figure 3 Schematic diagram of the structure of a power supply simulation unit according to a specific embodiment of the present invention. Figure 3 As shown, in a specific embodiment, the power supply side of the dynamic voltage recovery device is connected to the power supply through a three-phase power supply wire. The power supply side of the dynamic voltage recovery device is also connected to a neutral line N. The power supply is a three-phase power supply. The three-phase power supply wire includes a first phase wire L1, a second phase wire L2 and a third phase wire L3. The first phase wire L1 is connected in series with a first resistor R1 and a second resistor R2, the second phase wire L2 is connected in series with a third resistor R3 and a fourth resistor R4, and the third phase wire L3 is connected in series with a fifth resistor R5 and a sixth resistor R6.

[0047] In a specific embodiment, the power supply simulation unit 110 includes: a first three-phase circuit breaker 1101, a first three-phase contactor 1102, a second three-phase contactor 1103, a seventh single-phase contactor 1104 and an eighth single-phase contactor 1105; wherein the three phases of the first three-phase circuit breaker 1101 are respectively connected in series to the three-phase power supply wires, thereby controlling the on-off state of the power supply and the dynamic voltage recovery device; the three phases of the first three-phase contactor 1102 are respectively connected in parallel with two resistors on the three-phase power supply wires, thereby simultaneously controlling the access state of six resistors; the three phases of the second three-phase contactor 1103 are respectively connected in parallel with a resistor on the three-phase power supply wires, thereby simultaneously controlling the access state of three resistors; the seventh single-phase contactor 1104 is connected in parallel with two resistors on one of the phase power supply wires, thereby simultaneously controlling the access state of the two resistors; the eighth single-phase contactor 1105 is connected in parallel with two resistors on another phase power supply wire, thereby simultaneously controlling the access state of the other two resistors.

[0048] Specifically, the test system 100 of the dynamic voltage recovery device provided by the embodiment of the present invention, wherein the power supply simulation unit 110 includes a three-phase circuit breaker, two three-phase contactors and two single-phase contactors, so that by controlling the opening and closing states of a three-phase circuit breaker, two three-phase contactors and two single-phase contactors, the power supply simulation unit 110 can output different voltage states and / or different phase loss states, thereby simulating different power supply conditions of the dynamic voltage recovery device.

[0049] In one embodiment of the present invention, when controlling the opening and closing states of the circuit breaker and a plurality of contactors to control the power supply simulation unit 110 to output different power supply states, thereby simulating different power supply conditions of the dynamic voltage recovery device, the test unit 130 is configured to: control the first three-phase circuit breaker 1101 and the first three-phase contactor 1102 to be turned on, and control the second three-phase contactor 1103, the seventh single-phase contactor 1104 and the eighth single-phase contactor 1105 to be turned off, thereby simulating the normal power supply of the dynamic voltage recovery device; or, control the first three-phase circuit breaker 1101 , the first three-phase contactor 1102, the second three-phase contactor 1103, the seventh single-phase contactor 1104 and the eighth single-phase contactor 1105 are disconnected, thereby simulating the power failure of the dynamic voltage recovery device; or, the first three-phase circuit breaker 1101 and the second three-phase contactor 1103 are controlled to be turned on, and the first three-phase contactor 1102, the seventh single-phase contactor 1104 and the eighth single-phase contactor 1105 are controlled to be disconnected, thereby simulating the dynamic voltage recovery device to perform a temporary power reduction of the first voltage reduction degree; or, the first three-phase circuit breaker 1101 is controlled to be turned on, and the first three-phase The contactor 1102, the second three-phase contactor 1103, the seventh single-phase contactor 1104 and the eighth single-phase contactor 1105 are disconnected, thereby simulating the dynamic voltage recovery device to temporarily reduce the power supply with a second voltage reduction degree, wherein the voltage reduction amplitude of the second voltage reduction degree is greater than the voltage reduction amplitude of the first voltage reduction degree; or, the first three-phase circuit breaker 1101, the seventh single-phase contactor 1104 and the eighth single-phase contactor 1105 are controlled to be turned on, and the first three-phase contactor 1102 and the second three-phase contactor 1103 are controlled to be disconnected, thereby simulating the dynamic voltage recovery device to perform a single-phase short circuit. Phase power supply; or, control the first three-phase circuit breaker 1101 and the seventh single-phase contactor 1104 to be turned on, and control the first three-phase contactor 1102, the second three-phase contactor 1103 and the eighth single-phase contactor 1105 to be turned off, thereby simulating the dynamic voltage recovery device to perform two-phase phase-loss power supply; or, control the first three-phase circuit breaker 1101 and the eighth single-phase contactor 1105 to be turned on, and control the first three-phase contactor 1102, the second three-phase contactor 1103 and the seventh single-phase contactor 1104 to be turned off, thereby simulating the dynamic voltage recovery device to perform two-phase phase-loss power supply.

[0050] In a specific embodiment, the test unit 130 controls the first three-phase circuit breaker 1101 and the first three-phase contactor 1102 to be turned on, and the other contactors are disconnected, thereby simulating the normal power supply of the dynamic voltage recovery device; controls all circuit breakers and contactors to be disconnected, thereby simulating the power failure of the dynamic voltage recovery device; controls the first three-phase circuit breaker 1101 and the second three-phase contactor 1103 to be turned on, and the other contactors are disconnected, thereby simulating the dynamic voltage recovery device to perform a temporary power reduction of the first voltage reduction degree; controls the first three-phase circuit breaker 1101 to be turned on, and the other contactors are disconnected, thereby simulating the dynamic voltage recovery device to perform a temporary power reduction of the second voltage reduction degree. Electricity, and the voltage reduction amplitude of the second voltage reduction degree is greater than the voltage reduction amplitude of the first voltage reduction degree; by controlling the first three-phase circuit breaker 1101, the seventh single-phase contactor 1104 and the eighth single-phase contactor 1105 to be turned on, and the other contactors are disconnected, thereby simulating the dynamic voltage recovery device to perform single-phase phase-loss power supply; by controlling the first three-phase circuit breaker 1101 and the seventh single-phase contactor 1104 to be turned on, and the other contactors are disconnected, thereby simulating the dynamic voltage recovery device to perform two-phase phase-loss power supply; by controlling the first three-phase circuit breaker 1101 and the eighth single-phase contactor 1105 to be turned on, and the other contactors are disconnected, thereby simulating the dynamic voltage recovery device to perform two-phase phase-loss power supply.

[0051] Specifically, the test system 100 of the dynamic voltage recovery device provided by the embodiment of the present invention, wherein the power supply simulation unit 110 includes a three-phase circuit breaker, two three-phase contactors and two single-phase contactors, and the test unit 130 can control the power supply simulation unit 110 to supply normal power, power off, temporary power reduction of the first voltage reduction degree, temporary power reduction of the second voltage reduction degree, single-phase phase loss power supply or two-phase phase loss power supply by controlling the opening and closing states of the three-phase circuit breaker, the two three-phase contactors and the two single-phase contactors; thereby, the test unit 130 can control the power supply simulation unit 110 to simulate the dynamic voltage recovery device to output different voltage states and / or different phase loss states, and further simulate different power supply conditions of the dynamic voltage recovery device.

[0052] In one embodiment of the present invention, the load simulation unit 120 includes an inductor module and multiple resistor modules; the test unit 130 controls the load simulation unit 120 to output different resistance values ​​by controlling the access status of the inductor module and the multiple resistor modules, thereby simulating different load conditions of the dynamic voltage recovery device.

[0053] Specifically, the test system 100 of the dynamic voltage recovery device provided by the embodiment of the present invention, wherein the load simulation unit 120 includes an inductor module and multiple resistor modules, and the test unit 130 controls the load simulation unit 120 to output different resistance values ​​by controlling the access status of the inductor module and the multiple resistor modules to the dynamic voltage recovery device, so that the test unit 130 can be used to control the load simulation unit 120 to simulate different load conditions of the dynamic voltage recovery device.

[0054] In one embodiment of the present invention, the load side of the dynamic voltage recovery device is connected to the load through a three-phase load wire, and the three-phase load wire includes a fourth phase wire L4, a fifth phase wire L5 and a sixth phase wire L6; the load simulation unit 120 includes a first reactance module XX1, a first resistance module RR1 and a second resistance module RR2; wherein the first resistance module RR1 includes three seventh resistors R7 and a second three-phase circuit breaker 1201, and the three seventh resistors R7 are respectively connected in series to the fourth phase wire L4, the fifth phase wire L5 and the sixth phase wire L6, and the second three-phase circuit breaker 1201 includes a fourth single-phase circuit breaker 12011, a fifth single-phase circuit breaker 12012 and a sixth single-phase circuit breaker 12013. The single-phase circuit breaker 12012 and the sixth single-phase circuit breaker 12013, the fourth single-phase circuit breaker 12011 is connected in series to the fourth phase wire L4, the fifth single-phase circuit breaker 12012 is connected in series to the fifth phase wire L5, the sixth single-phase circuit breaker 12013 is connected in series to the sixth phase wire L6, the second three-phase circuit breaker 1201 is used to simultaneously control the access state of the three seventh resistors R7, thereby controlling the access state of the first resistor module RR1; the second resistor module RR2 includes three eighth resistors R8 and a third three-phase circuit breaker 1202, and the three eighth resistors R8 are respectively connected in series to the fourth phase wire L4, the fifth phase wire L5 and the sixth phase wire L 6, the third three-phase circuit breaker 1202 includes a seventh single-phase circuit breaker 12021, an eighth single-phase circuit breaker 12022 and a ninth single-phase circuit breaker 12023, the seventh single-phase circuit breaker 12021 is connected in series to the fourth phase wire L4, the eighth single-phase circuit breaker 12022 is connected in series to the fifth phase wire L5, and the ninth single-phase circuit breaker 12023 is connected in series to the sixth phase wire L6, and the third three-phase circuit breaker 1202 is used to simultaneously control the access state of the three eighth resistors R8, thereby controlling the access state of the second resistor module RR2; the first reactance module XX1 includes three first reactances X1 and a fourth three-phase circuit breaker 1203, and the three first reactances X2 and the fourth three-phase circuit breaker 1203 are connected in series to the fourth phase wire L4, and the eighth single-phase circuit breaker 12022 is connected in series to the fifth phase wire L5, and the ninth single-phase circuit breaker 12023 is connected in series to the sixth phase wire L6. An inductor X1 is respectively connected in series to the fourth phase wire L4, the fifth phase wire L5 and the sixth phase wire L6. The fourth three-phase circuit breaker 1203 includes a tenth single-phase circuit breaker 12031, an eleventh single-phase circuit breaker 12032 and a twelfth single-phase circuit breaker 12033. The tenth single-phase circuit breaker 12031 is connected in series to the fourth phase wire L4, the eleventh single-phase circuit breaker 12032 is connected in series to the fifth phase wire L5, and the twelfth single-phase circuit breaker 12033 is connected in series to the sixth phase wire L6. The fourth three-phase circuit breaker 1203 is used to simultaneously control the access status of the three first inductors X1, thereby controlling the access status of the first inductor module XX1.

[0055] Figure 4 FIG. 1 is a schematic diagram of the structure of a load simulation unit according to a specific embodiment of the present invention. Figure 4As shown, in a specific embodiment, the load side of the dynamic voltage recovery device is connected to the load through a three-phase load wire, the three-phase load wire includes a fourth phase wire L4, a fifth phase wire L5 and a sixth phase wire L6, and the load side of the dynamic voltage recovery device is also connected to a neutral line N.

[0056] In a specific embodiment, the load simulation unit 120 includes a first reactance module XX1, a first resistance module RR1 and a second resistance module RR2; wherein, the three seventh resistors R7 in the first resistance module RR1 are correspondingly connected in series on the three-phase load wires, and the access status of the three seventh resistors R7 are simultaneously controlled by the second three-phase circuit breaker 1201, thereby controlling the access status of the first resistance module RR1; the three eighth resistors R8 in the second resistance module RR2 are correspondingly connected in series on the three-phase load wires, and the access status of the three eighth resistors R8 are simultaneously controlled by the third three-phase circuit breaker 1202, thereby controlling the access status of the second resistance module RR2; the three first reactances X1 in the first reactance module XX1 are correspondingly connected in series on the three-phase load wires, and the access status of the three first reactances X1 are simultaneously controlled by the fourth three-phase circuit breaker 1203, thereby controlling the access status of the first reactance module XX1.

[0057] Specifically, the test system 100 of the dynamic voltage recovery device provided by an embodiment of the present invention, wherein the load simulation unit 120 includes a first reactance module XX1, a first resistance module RR1 and a second resistance module RR2, so that by controlling the access status of the first reactance module XX1, the first resistance module RR1 and the second resistance module RR2 to the dynamic voltage recovery device, the load simulation unit 120 can output different resistance values, thereby simulating different load conditions of the dynamic voltage recovery device.

[0058] In one embodiment of the present invention, when controlling the access status of the reactance module and multiple resistance modules to control the load simulation unit 120 to output different resistance values, thereby simulating different load conditions of the dynamic voltage recovery device, the test unit 130 is configured to: control the second three-phase circuit breaker 1201, the third three-phase circuit breaker 1202 and the fourth three-phase circuit breaker 1203 to be turned on, so that the first resistance module RR1, the second resistance module RR2 and the first reactance module XX1 are connected, thereby simulating the first load condition of the dynamic voltage recovery device; or, control the second three-phase circuit breaker 1201 and the third three-phase circuit breaker 1202 and the fourth three-phase circuit breaker 1203 to be turned on. The first three-phase circuit breaker 1202 is turned on, and the fourth three-phase circuit breaker 1203 is turned off, so that the first resistance module RR1 and the second resistance module RR2 are connected, and the first reactance module XX1 is not connected, thereby simulating the second load condition of the dynamic voltage recovery device; or, the second three-phase circuit breaker 1201 and the fourth three-phase circuit breaker 1203 are controlled to be turned on, and the third three-phase circuit breaker 1202 is turned off, so that the first resistance module RR1 and the first reactance module XX1 are connected, and the second resistance module RR2 is not connected, thereby simulating the third load condition of the dynamic voltage recovery device; or, the third three-phase circuit breaker 1201 is controlled to be turned on, and the fourth three-phase circuit breaker 1203 is controlled to be turned on, and the third three-phase circuit breaker 1202 is turned off, so that the first resistance module RR1 and the first reactance module XX1 are connected, and the second resistance module RR2 is not connected, thereby simulating the third load condition of the dynamic voltage recovery device; 02 and the fourth three-phase circuit breaker 1203 are turned on, and the second three-phase circuit breaker 1201 is turned off, so that the second resistance module RR2 and the first reactance module XX1 are connected, and the first resistance module RR1 is not connected, thereby simulating the fourth load condition of the dynamic voltage recovery device; or, the second three-phase circuit breaker 1201 is controlled to be turned on, and the third three-phase circuit breaker 1202 and the fourth three-phase circuit breaker 1203 are turned off, so that the first resistance module RR1 is connected, and the second resistance module RR2 and the first reactance module XX1 are not connected, thereby simulating the fifth load condition of the dynamic voltage recovery device; or, the third three-phase circuit breaker 1201 is controlled to be turned on, and the third three-phase circuit breaker 1202 and the fourth three-phase circuit breaker 1203 are turned off, so that the first resistance module RR1 is connected, and the second resistance module RR2 and the first reactance module XX1 are not connected, thereby simulating the fifth load condition of the dynamic voltage recovery device. The three-phase circuit breaker 1202 is turned on, and the second three-phase circuit breaker 1201 and the fourth three-phase circuit breaker 1203 are disconnected, so that the second resistance module RR2 is connected, and the first resistance module RR1 and the first reactance module XX1 are not connected, thereby simulating the sixth load condition of the dynamic voltage recovery device; or, the fourth three-phase circuit breaker 1203 is controlled to be turned on, and the second three-phase circuit breaker 1201 and the third three-phase circuit breaker 1202 are disconnected, so that the first reactance module XX1 is connected, and the first resistance module RR1 and the second resistance module RR2 are not connected, thereby simulating the seventh load condition of the dynamic voltage recovery device.

[0059] Specifically, the test system 100 of the dynamic voltage recovery device provided by the embodiment of the present invention, wherein the load simulation unit 120 includes a first reactance module XX1, a first resistance module RR1 and a second resistance module RR2, and the test unit 130 can control the different connection conditions of the first resistance module RR1, the second resistance module RR2 and the first reactance module XX1 with the dynamic voltage recovery device by controlling the different conduction modes of the second three-phase circuit breaker 1201, the third three-phase circuit breaker 1202 and the fourth three-phase circuit breaker 1203; thereby, the test unit 130 can control the load simulation unit 120 to output different resistance values, thereby simulating different load conditions of the dynamic voltage recovery device.

[0060] Figure 5 FIG. 1 is a schematic diagram of a structure of a test system for a dynamic voltage recovery device according to another embodiment of the present invention. Figure 5 As shown, in one embodiment of the present invention, the test system 100 of the dynamic voltage recovery device also includes: a test requirement input unit 140, which is connected to the test unit 130, and the test requirement input unit 140 is used to provide an input interface, and the interface is used to input test requirements so that the test unit 130 controls the power supply simulation unit 110 and the load simulation unit 120 according to the input test requirements, wherein the test requirements include different power supply conditions and different load conditions.

[0061] In a specific embodiment, the test requirement input unit 140 includes, for example, a touch screen, a mobile phone, etc., and the test requirement can be input through the test requirement input unit 140.

[0062] Specifically, the test system 100 of the dynamic voltage recovery device provided in the embodiment of the present invention is provided with a test requirement input unit 140. The operator can use the test requirement input unit 140 to intuitively select test requirements, such as different power supply conditions and different load conditions. The test unit 130 controls the power supply simulation unit 110 and the load simulation unit 120 according to the input test requirements, so as to more conveniently test the dynamic voltage recovery device and understand the test items.

[0063] In an additional specific embodiment, the test requirement input unit 140 can also display test data such as test time and status, so as to facilitate operators to understand the test results.

[0064] In summary, the test system 100 for the dynamic voltage recovery device provided in the embodiment of the present invention connects the power supply simulation unit 110 to the power supply side of the dynamic voltage recovery device, and uses the test unit 130 to switch the different states of the power supply simulation unit 110 to simulate different power supply conditions of the dynamic voltage recovery device; at the same time, the load simulation unit 120 is connected to the load side of the dynamic voltage recovery device, and uses the test unit 130 to switch the different states of the load simulation unit 120 to simulate different load conditions of the dynamic voltage recovery device; finally, the test unit 130 is used to collect the operating status information of the dynamic voltage recovery device under different power supply conditions and different load conditions, thereby completing the test of the dynamic voltage recovery device.

[0065] In this way, according to the test system 100 of the dynamic voltage recovery device provided in an embodiment of the present invention, only by manipulating the test unit 130, it is possible to control the power supply simulation unit 110 to simulate different power supply conditions of the dynamic voltage recovery device, and control the load simulation unit 120 to simulate different load conditions of the dynamic voltage recovery device, thereby avoiding misoperation and cumbersome operation caused by manual operation, and improving the accuracy and simplicity of the test; at the same time, by using the test unit 130, the time, status and other test data of each condition can be accurately recorded, thereby avoiding errors and cumbersome recording caused by manual recording, and improving the accuracy and simplicity of the test records.

[0066] A further embodiment of the present invention provides a method for testing a dynamic voltage recovery device.

[0067] Figure 6 FIG. 1 is a flow chart of a method for testing a dynamic voltage recovery device according to an embodiment of the present invention. Figure 6 As shown, the testing method of the dynamic voltage recovery device comprises the following steps:

[0068] Step S1: Simulate different power supply conditions of the dynamic voltage recovery device.

[0069] In this specific embodiment, different power supply conditions include normal power supply, power off, temporary power reduction of a first voltage reduction level, temporary power reduction of a second voltage reduction level, single-phase phase loss power supply and two-phase phase loss power supply, wherein the voltage reduction amplitude of the second voltage reduction level is greater than the voltage reduction amplitude of the first voltage reduction level.

[0070] Step S2: Simulate different load conditions of the dynamic voltage recovery device.

[0071] In this specific embodiment, the different load conditions include a first load condition, a second load condition, a third load condition, a fourth load condition, a fifth load condition, a sixth load condition and a seventh load condition.

[0072] Step S3: Collecting the operating status information of the dynamic voltage recovery device under different power supply conditions and different load conditions.

[0073] The advantages of the dynamic voltage recovery device testing system 100 and the dynamic voltage recovery device testing method provided by the embodiments of the present invention are verified below in conjunction with specific embodiments.

[0074] In this specific embodiment, the power supply simulation unit 110 is integrated into a switch cabinet, the load simulation unit 120 is integrated into a load cabinet, and the test unit 130 is integrated into a control cabinet.

[0075] In this specific embodiment, the switch cabinet mainly includes controllable circuit breakers, contactors and other components, which are connected to the power supply side of the DVR and are used to cut off and connect the power supply of the DVR to simulate power failure, temporary drop, phase loss and other working conditions; the load cabinet is divided into a resistor cabinet and a reactance cabinet, which are connected to the load side of the DVR. By connecting different numbers of resistors and reactances, the working conditions of the DVR under different power factors are simulated; the control cabinet mainly includes PLC and HMI (human-machine interface). PLC is used to control the controllable switches in the switch cabinet and load cabinet and collect their status. At the same time, there is also communication between the control cabinet and the DVR. When the DVR fails, the test is interrupted through PLC control to restore the normal power supply of the DVR. HMI is used to operate and control the on and off of various switches and display the status of each component.

[0076] In this specific embodiment, the load has the following collocation modes: ① resistor cabinet 1; ② resistor cabinet 2; ③ resistor cabinet 1 + resistor cabinet 2; ④ resistor cabinet 1 + reactor cabinet; ⑤ resistor cabinet 2 + reactor cabinet; ⑥ resistor cabinet 1 + resistor cabinet 2 + reactor cabinet; ⑦ reactor cabinet. The load collocation can be selected according to the test requirements.

[0077] Figure 7 FIG. 1 is a flow chart of a method for testing a dynamic voltage recovery device according to a specific embodiment of the present invention. Figure 7 As shown, before testing, check whether the DVR is faulty. When the DVR is not faulty, test it. First, power the DVR normally, then simulate a power outage, then simulate a 10% drop in the DVR power supply, then simulate a 20% drop in the DVR power supply, then simulate a single-phase loss of the DVR power supply, and then simulate a two-phase loss of the DVR power supply.

[0078] Since the DVR is used in conjunction with a flywheel, each time the flywheel is discharged, it is necessary to wait until the flywheel is fully charged before conducting subsequent tests.

[0079] Thus, according to the testing method of the dynamic voltage recovery device in the embodiment of the present invention, the testing system 100 for the dynamic voltage recovery device provided in the embodiment of the present invention connects the power supply simulation unit 110 on the power supply side of the dynamic voltage recovery device, and uses the testing unit 130 to switch the different states of the power supply simulation unit 110 to simulate different power supply conditions of the dynamic voltage recovery device; at the same time, the load simulation unit 120 is connected to the load side of the dynamic voltage recovery device, and uses the testing unit 130 to switch the different states of the load simulation unit 120 to simulate different load conditions of the dynamic voltage recovery device; finally, the testing unit 130 is used to collect the operating status information of the dynamic voltage recovery device under different power supply conditions and different load conditions, thereby completing the test of the dynamic voltage recovery device.

[0080] In this way, according to the testing method of the dynamic voltage recovery device in an embodiment of the present invention, only by manipulating the test unit 130, the power supply simulation unit 110 can be controlled to simulate different power supply conditions of the dynamic voltage recovery device, and the load simulation unit 120 can be controlled to simulate different load conditions of the dynamic voltage recovery device, thereby avoiding misoperation and cumbersome operation caused by manual operation, and improving the accuracy and simplicity of the test; at the same time, using the test unit 130, the time, status and other test data of each condition can be accurately recorded, thereby avoiding errors and cumbersome recording caused by manual recording, and improving the accuracy and simplicity of the test records.

[0081] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0082] In the description of the present invention, "plurality" means two or more.

[0083] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0084] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A test system for a dynamic voltage recovery device, characterized in that: include: A power supply simulation unit connected to the power supply side of the dynamic voltage recovery device, the power supply simulation unit being used to simulate different power supply conditions of the dynamic voltage recovery device according to different states of the power supply simulation unit; A load simulation unit connected to the load side of the dynamic voltage recovery device, the load simulation unit being used to simulate different load conditions of the dynamic voltage recovery device according to different states of the load simulation unit; A test unit, connected to the power supply simulation unit, the load simulation unit and the dynamic voltage recovery device respectively, the test unit is used to control the state of the power supply simulation unit and the state of the load simulation unit, and the test unit is also used to collect the operating state information of the dynamic voltage recovery device under different power supply conditions and different load conditions; Wherein, the power supply simulation unit includes a circuit breaker and a plurality of contactors; The test unit controls the power supply simulation unit to output different power supply states by controlling the opening and closing states of the circuit breaker and the plurality of contactors, thereby simulating different power supply conditions of the dynamic voltage recovery device, wherein the different power supply states include different voltage states and / or different phase loss states; The power supply side of the dynamic voltage recovery device is connected to the power supply through a three-phase power supply wire, the three-phase power supply wire includes a first phase wire, a second phase wire and a third phase wire, and the first phase wire is connected in series with a first resistor and a second resistor, the second phase wire is connected in series with a third resistor and a fourth resistor, and the third phase wire is connected in series with a fifth resistor and a sixth resistor; The power supply simulation unit comprises: A first three-phase circuit breaker, comprising a first single-phase circuit breaker, a second single-phase circuit breaker and a third single-phase circuit breaker, wherein the first single-phase circuit breaker is connected in series to the first-phase wire, the second single-phase circuit breaker is connected in series to the second-phase wire, and the third single-phase circuit breaker is connected in series to the third-phase wire, and the first three-phase circuit breaker is used to simultaneously control the first single-phase circuit breaker, the second single-phase circuit breaker and the third single-phase circuit breaker, thereby controlling the on-off state of the power supply and the dynamic voltage recovery device; A first three-phase contactor, comprising a first single-phase contactor, a second single-phase contactor and a third single-phase contactor, wherein one end of the first single-phase contactor is connected to one end of the first resistor, the other end of the first single-phase contactor is connected to one end of the second resistor, and the other end of the first resistor is connected to the other end of the second resistor, one end of the second single-phase contactor is connected to one end of the third resistor, the other end of the second single-phase contactor is connected to one end of the fourth resistor, and the other end of the third resistor is connected to the other end of the fourth resistor, one end of the third single-phase contactor is connected to one end of the fifth resistor, the other end of the third single-phase contactor is connected to one end of the sixth resistor, and the other end of the fifth resistor is connected to the other end of the sixth resistor, and the first three-phase contactor is used to simultaneously control the first single-phase contactor, the second single-phase contactor and the third single-phase contactor, thereby simultaneously controlling the access states of the first resistor, the second resistor, the third resistor, the fourth resistor, the fifth resistor and the sixth resistor; The second three-phase contactor includes a fourth single-phase contactor, a fifth single-phase contactor and a sixth single-phase contactor, one end of the fourth single-phase contactor is connected to one end of the first resistor, the other end of the fourth single-phase contactor is connected to the other end of the first resistor, one end of the fifth single-phase contactor is connected to one end of the third resistor, the other end of the fifth single-phase contactor is connected to the other end of the third resistor, one end of the sixth single-phase contactor is connected to one end of the fifth resistor, the other end of the sixth single-phase contactor is connected to the other end of the fifth resistor, and the second three-phase contactor is used to simultaneously control the fourth single-phase contactor, the fifth single-phase contactor and the sixth single-phase contactor, thereby simultaneously controlling the access status of the first resistor, the third resistor and the fifth resistor; a seventh single-phase contactor, one end of the seventh single-phase contactor being connected to one end of the first resistor, the other end of the seventh single-phase contactor being connected to one end of the second resistor, and the other end of the first resistor being connected to the other end of the second resistor, the seventh single-phase contactor being used to simultaneously control the access states of the first resistor and the second resistor; An eighth single-phase contactor, one end of the eighth single-phase contactor is connected to one end of the third resistor, the other end of the eighth single-phase contactor is connected to one end of the fourth resistor, and the other end of the third resistor is connected to the other end of the fourth resistor, and the eighth single-phase contactor is used to simultaneously control the access status of the third resistor and the fourth resistor.

2. The test system of the dynamic voltage recovery device according to claim 1, characterized in that: The test unit is also used to monitor the fault state of the dynamic voltage recovery device, and control the connection state of the power supply simulation unit and the dynamic voltage recovery device according to the fault state, and control the connection state of the load simulation unit and the dynamic voltage recovery device; Wherein, when the dynamic voltage recovery device fails, the test unit controls the power supply simulation unit and the dynamic voltage recovery device to be disconnected, and controls the load simulation unit and the dynamic voltage recovery device to be disconnected.

3. The test system of the dynamic voltage recovery device according to claim 1, characterized in that: When the power supply simulation unit is controlled to output different power supply states by controlling the opening and closing states of the circuit breaker and the plurality of contactors, thereby simulating different power supply conditions of the dynamic voltage recovery device, the test unit is configured as follows: Controlling the first three-phase circuit breaker and the first three-phase contactor to be turned on, and controlling the second three-phase contactor, the seventh single-phase contactor and the eighth single-phase contactor to be turned off, thereby simulating normal power supply of the dynamic voltage recovery device; or, Controlling the first three-phase circuit breaker, the first three-phase contactor, the second three-phase contactor, the seventh single-phase contactor and the eighth single-phase contactor to be disconnected, thereby simulating power failure of the dynamic voltage recovery device; or, Controlling the first three-phase circuit breaker and the second three-phase contactor to be turned on, and controlling the first three-phase contactor, the seventh single-phase contactor and the eighth single-phase contactor to be turned off, thereby simulating the dynamic voltage recovery device to perform a temporary power reduction of a first voltage reduction degree; or, Controlling the first three-phase circuit breaker to be turned on, and controlling the first three-phase contactor, the second three-phase contactor, the seventh single-phase contactor, and the eighth single-phase contactor to be turned off, thereby simulating the dynamic voltage recovery device to perform a temporary power reduction of a second voltage reduction degree, wherein the voltage reduction amplitude of the second voltage reduction degree is greater than the voltage reduction amplitude of the first voltage reduction degree; or, Controlling the first three-phase circuit breaker, the seventh single-phase contactor and the eighth single-phase contactor to be turned on, and controlling the first three-phase contactor and the second three-phase contactor to be turned off, thereby simulating the dynamic voltage recovery device to perform single-phase missing-phase power supply; or, Controlling the first three-phase circuit breaker and the seventh single-phase contactor to be turned on, and controlling the first three-phase contactor, the second three-phase contactor and the eighth single-phase contactor to be turned off, thereby simulating the dynamic voltage recovery device to perform two-phase missing phase power supply; or, The first three-phase circuit breaker and the eighth single-phase contactor are controlled to be turned on, and the first three-phase contactor, the second three-phase contactor and the seventh single-phase contactor are controlled to be turned off, thereby simulating the dynamic voltage recovery device to perform two-phase missing phase power supply.

4. The test system of the dynamic voltage recovery device according to claim 1, characterized in that: The load simulation unit includes a reactance module and a plurality of resistance modules; The test unit controls the access status of one of the reactance modules and the plurality of resistance modules to control the load simulation unit to output different resistance values, thereby simulating different load conditions of the dynamic voltage recovery device.

5. The test system of the dynamic voltage recovery device according to claim 4, characterized in that: The load side of the dynamic voltage recovery device is connected to the load through a three-phase load wire, and the three-phase load wire includes a fourth phase wire, a fifth phase wire and a sixth phase wire; The load simulation unit includes a first reactance module, a first resistance module and a second resistance module; wherein, The first resistance module includes three seventh resistors and a second three-phase circuit breaker, the three seventh resistors are respectively connected in series to the fourth-phase wire, the fifth-phase wire and the sixth-phase wire, the second three-phase circuit breaker includes a fourth single-phase circuit breaker, a fifth single-phase circuit breaker and a sixth single-phase circuit breaker, the fourth single-phase circuit breaker is connected in series to the fourth-phase wire, the fifth single-phase circuit breaker is connected in series to the fifth-phase wire, and the sixth single-phase circuit breaker is connected in series to the sixth-phase wire, and the second three-phase circuit breaker is used to simultaneously control the access status of the three seventh resistors, thereby controlling the access status of the first resistance module; The second resistance module includes three eighth resistors and a third three-phase circuit breaker, the three eighth resistors are respectively connected in series to the fourth-phase wire, the fifth-phase wire and the sixth-phase wire, the third three-phase circuit breaker includes a seventh single-phase circuit breaker, an eighth single-phase circuit breaker and a ninth single-phase circuit breaker, the seventh single-phase circuit breaker is connected in series to the fourth-phase wire, the eighth single-phase circuit breaker is connected in series to the fifth-phase wire, and the ninth single-phase circuit breaker is connected in series to the sixth-phase wire, and the third three-phase circuit breaker is used to simultaneously control the access status of the three eighth resistors, thereby controlling the access status of the second resistance module; The first reactance module includes three first reactances and a fourth three-phase circuit breaker. The three first reactances are respectively connected in series to the fourth phase wire, the fifth phase wire and the sixth phase wire. The fourth three-phase circuit breaker includes a tenth single-phase circuit breaker, an eleventh single-phase circuit breaker and a twelfth single-phase circuit breaker. The tenth single-phase circuit breaker is connected in series to the fourth phase wire, the eleventh single-phase circuit breaker is connected in series to the fifth phase wire, and the twelfth single-phase circuit breaker is connected in series to the sixth phase wire. The fourth three-phase circuit breaker is used to simultaneously control the access status of the three first reactances, thereby controlling the access status of the first reactance module.

6. The test system of the dynamic voltage recovery device according to claim 5, characterized in that: When the load simulation unit is controlled to output different resistance values ​​by controlling the access states of one of the reactance modules and the plurality of resistance modules, thereby simulating different load conditions of the dynamic voltage recovery device, the test unit is configured as follows: Controlling the second three-phase circuit breaker, the third three-phase circuit breaker and the fourth three-phase circuit breaker to be turned on, so that the first resistance module, the second resistance module and the first reactance module are connected, thereby simulating a first load condition of the dynamic voltage recovery device; or, Controlling the second three-phase circuit breaker and the third three-phase circuit breaker to be turned on, and the fourth three-phase circuit breaker to be turned off, so that the first resistance module and the second resistance module are connected, and the first reactance module is not connected, thereby simulating a second load condition of the dynamic voltage recovery device; or, Controlling the second three-phase circuit breaker and the fourth three-phase circuit breaker to be turned on, and the third three-phase circuit breaker to be turned off, so that the first resistance module and the first reactance module are connected, and the second resistance module is not connected, thereby simulating a third load condition of the dynamic voltage recovery device; or, Controlling the third three-phase circuit breaker and the fourth three-phase circuit breaker to be turned on, and the second three-phase circuit breaker to be turned off, so that the second resistance module and the first reactance module are connected, and the first resistance module is not connected, thereby simulating a fourth load condition of the dynamic voltage recovery device; or, Controlling the second three-phase circuit breaker to be turned on, and the third three-phase circuit breaker and the fourth three-phase circuit breaker to be turned off, so that the first resistance module is connected, and the second resistance module and the first reactance module are not connected, thereby simulating a fifth load condition of the dynamic voltage recovery device; or, Controlling the third three-phase circuit breaker to be turned on, and the second three-phase circuit breaker and the fourth three-phase circuit breaker to be turned off, so that the second resistance module is connected, and the first resistance module and the first reactance module are not connected, thereby simulating the sixth load condition of the dynamic voltage recovery device; or, The fourth three-phase circuit breaker is controlled to be turned on, and the second three-phase circuit breaker and the third three-phase circuit breaker are controlled to be turned off, so that the first reactance module is connected and the first resistance module and the second resistance module are not connected, thereby simulating the seventh load condition of the dynamic voltage recovery device.

7. The test system of the dynamic voltage recovery device according to claim 1, characterized in that: Also includes: A test requirement input unit is connected to the test unit, and is used to provide an input interface, wherein the interface is used to input test requirements so that the test unit controls the power supply simulation unit and the load simulation unit according to the input test requirements, wherein the test requirements include different power supply conditions and different load conditions.

8. A method for testing a dynamic voltage recovery device, characterized in that: A test system for a dynamic voltage recovery device according to any one of claims 1 to 7 is used, and a test method for the dynamic voltage recovery device comprises the following steps: Simulate different power supply conditions of dynamic voltage recovery device; Simulating different load conditions of the dynamic voltage recovery device; The operating status information of the dynamic voltage recovery device under the different power supply conditions and the different load conditions is collected.

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