Aging test system of power supply

Abstract

The utility model discloses an aging test system of a power supply, which belongs to the field of power supply testing and can realize load testing when output electric energy of a power supply to be tested is converted and then supplied to a power grid. Therefore, the electric energy conversion device can convert direct current output by the power supply to be tested into alternating current consistent with the electric energy specification of the power grid and then transmit the alternating current to the power grid through the feeder line cabinet, and the control device can control the start and stop of the power supply to be tested and the electric energy conversion device, so that the controllability of the aging test is ensured, and the reliability of the aging test is improved. When the aging test of the power supply is carried out, the output of the power supply to be tested is converted and then fed back to the power grid, so that the electric energy waste is reduced, and the test cost is reduced.

Description

Technical Field

[0001] The utility model relates to the field of power supply testing, in particular to an aging test system for a power supply. Background Art

[0002] The aging test is a process of controlling the long-term operation of a power supply and conducting a load test, aiming to evaluate the reliability and stability of the power supply under long-term and high-load working conditions. However, in the related art, there is a lack of a mature aging test system for a power supply. Usually, a large resistor box is used as a load to conduct an aging test on the power supply to be tested. This aging test method will waste a large amount of electric energy, resulting in a huge test cost.

[0003] Therefore, how to provide a solution to the above technical problems is an issue that those skilled in the art need to solve currently. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an aging test system for a power supply. In the utility model, the power conversion device can convert the direct current output by the power supply to be tested into alternating current consistent with the power grid's power specifications, and then transmit it to the power grid through the feeder cabinet. Moreover, the start and stop of the power supply to be tested and the power conversion device can be controlled through the control device, thus ensuring the controllability of the aging test. Since the output of the power supply to be tested is converted and fed back to the power grid while conducting the aging test of the power supply, the waste of electric energy is reduced, and the test cost is lowered.

[0005] To solve the above technical problems, the utility model provides an aging test system for a power supply, including:

[0006] A feeder cabinet for realizing the electrical connection between its first end and second end, and between its first end and third end. Among them, the first end of the feeder cabinet is connected to the power grid, the second end is connected to the input end of the power supply to be tested, and the third end is connected to the output end of the power conversion device;

[0007] A power conversion device for converting the direct current output by the power supply to be tested into alternating current consistent with the power grid's power specifications, and then transmitting it to the power grid through the feeder cabinet. Among them, the input end of the power conversion device is connected to the output end of the power supply to be tested;

[0008] A control device for controlling the start and stop of the power supply to be tested and the power conversion device. Among them, the control device is respectively connected to the power supply to be tested and the power conversion device.

[0009] On the other hand, the power conversion device includes:

[0010] A transformer is used to perform voltage transformation between the feeder cabinet and the current conversion device, so as to transmit the alternating current output by the current conversion device to the power grid through the feeder cabinet. Wherein, the first side of the transformer is connected to the third end of the feeder cabinet, and the second side of the transformer is respectively connected to the electrical parameter monitoring device and the current conversion device;

[0011] The electrical parameter monitoring device is used to detect the electrical energy specification on the second side of the transformer as the target electrical energy specification. Wherein, the electrical parameter monitoring device is connected to the current conversion device;

[0012] The current conversion device is used to convert the direct current output by the power supply to be tested into alternating current of the target electrical energy specification.

[0013] On the other hand, the aging test system of the power supply includes a power conversion system (PCS);

[0014] The power conversion system (PCS) includes the electrical parameter monitoring device and the current conversion device.

[0015] On the other hand, the aging test system of the power supply further includes:

[0016] A temperature measuring device is used to detect the real-time temperature at a specified position in the aging test system of the power supply. Wherein, the temperature measuring device is arranged at the specified position in the aging test system of the power supply and is connected to the control device;

[0017] A display is used to display the real-time temperature under the control of the control device. Wherein, the display is connected to the control device.

[0018] On the other hand, the aging test system of the power supply further includes:

[0019] A temperature regulating device is used to regulate the real-time temperature under the control of the control device. Wherein, the temperature regulating device is connected to the control device.

[0020] On the other hand, the temperature regulating device includes a plurality of fans arranged in the aging test system of the power supply.

[0021] On the other hand, the aging test system of the power supply further includes:

[0022] An oscilloscope is used to send the output waveform of the power supply to be tested collected to the control device, so that the control device controls the display to display the output waveform. Wherein, the oscilloscope is respectively connected to the output end of the power supply to be tested and the control device.

[0023] On the other hand, the aging test system of the power supply further includes:

[0024] An electricity meter is used to detect the input power of the feeder cabinet to the power supply under test and send the input power to the control device. The electricity meter is respectively connected to the power supply under test and the control device.

[0025] A power detection device is used to detect the total output power of the power supply under test and send the total output power to the control device, so that the control device can determine the power conversion efficiency of the power supply under test based on the input power and the total output power. The power detection device is respectively connected to the power supply under test and the control device.

[0026] On the other hand, the power supply under test includes a plurality of series-connected single crystal furnace heating power supplies.

[0027] On the other hand, the aging test system of the power supply further includes:

[0028] A human-machine interaction device is used to issue instructions to the control device through it, so that the control device can simulate the working conditions of the power supply under test by adjusting the output power of the energy storage converter. The human-machine interaction device is connected to the control device.

[0029] Beneficial effects: The present invention provides an aging test system for a power supply. Considering that the output electric energy of the power supply under test can be converted and provided to the power grid, and the load test can also be realized. Therefore, the power conversion device in the present invention can convert the direct current output by the power supply under test into alternating current consistent with the power grid's power specifications and then transmit it to the power grid through the feeder cabinet. And the start and stop of the power supply under test and the power conversion device can be controlled by the control device, thus ensuring the controllability of the aging test. Since the output of the power supply under test is converted and fed back to the power grid while the aging test of the power supply is carried out, the waste of electric energy is reduced and the test cost is lowered. Description of the Drawings

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings required for use in the related technologies and embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0031] Figure 1 It is a schematic structural diagram of an aging test system for a power supply provided by the present invention;

[0032] Figure 2 It is a schematic structural diagram of another aging test system for a power supply provided by the present invention. Detailed Embodiments

[0033] The core of the present utility model is to provide an aging test system for a power supply. In the present utility model, the power conversion device can convert the direct current output by the power supply to be tested into alternating current consistent with the power grid's power specifications, and then transmit it to the power grid through the feeder cabinet. Moreover, the start and stop of the power supply to be tested and the power conversion device can be controlled through the control device, thereby ensuring the controllability of the aging test. Since the output of the power supply to be tested is converted and fed back to the power grid while the aging test of the power supply is being carried out, power waste is reduced and the test cost is lowered.

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0035] Please refer to Figure 1 , Figure 1 which is a schematic structural diagram of an aging test system for a power supply provided by the present utility model. The aging test system for the power supply includes:

[0036] A feeder cabinet 1 for realizing electrical connection between its first end and second end, and between its first end and third end. Among them, the first end of the feeder cabinet 1 is connected to the power grid, the second end is connected to the input end of the power supply to be tested, and the third end is connected to the output end of the power conversion device 2;

[0037] A power conversion device 2 for converting the direct current output by the power supply to be tested into alternating current consistent with the power grid's power specifications and then transmitting it to the power grid through the feeder cabinet 1. Among them, the input end of the power conversion device 2 is connected to the output end of the power supply to be tested;

[0038] A control device 3 for controlling the start and stop of the power supply to be tested and the power conversion device 2. Among them, the control device 3 is respectively connected to the power supply to be tested and the power conversion device 2.

[0039] Specifically, considering the technical problems in the above background art and also considering that the output electric energy of the power supply to be tested can be converted and provided to the power grid, which can also achieve load testing. Therefore, in the embodiment of the present invention, on the basis of providing input electric energy to the power supply to be tested through the feeder cabinet 1, the direct current output by the power supply to be tested is converted into alternating current consistent with the power grid's electric energy specifications through the electric energy conversion device 2, and then transported to the power grid through the feeder cabinet 1. Thus, while aging testing the power supply to be tested, the output electric energy of the power supply to be tested is fed back to the power grid, avoiding waste of electric energy during the aging test and reducing the cost of the aging test.

[0040] Among them, in order to more reliably control the aging test process, in the embodiment of the present invention, the start and stop of the power supply to be tested and the electric energy conversion device 2 can be controlled through the control device 3. For example, when starting the test, the power supply to be tested and the electric energy conversion device 2 can be simultaneously controlled to start through the control device 3, and when stopping the test, the power supply to be tested and the electric energy conversion device 2 can be simultaneously controlled to stop through the control device 3, etc. The embodiment of the present invention does not make limitations here.

[0041] Specifically, the power supply to be tested can usually receive alternating current from the power grid and convert it into direct current output. And in order to reduce the impact on the power quality in the power grid, the direct current output by the power supply to be tested can be converted into alternating current consistent with the power grid's electric energy specifications and then transported to the power grid through the feeder cabinet 1. The power grid's electric energy specifications involve multiple aspects, such as voltage, frequency, and phase, etc. The embodiment of the present invention does not make limitations here.

[0042] Specifically, the control device 3 can have various specific implementation manners. For example, it can be a computer or a single-chip microcomputer, etc. The embodiment of the present invention does not make limitations here.

[0043] The present invention provides an aging test system for a power supply. Considering that the output electric energy of the power supply to be tested can be converted and provided to the power grid, which can also achieve load testing. Therefore, the electric energy conversion device in the present invention can convert the direct current output by the power supply to be tested into alternating current consistent with the power grid's electric energy specifications and then transport it to the power grid through the feeder cabinet, and the start and stop of the power supply to be tested and the electric energy conversion device can be controlled through the control device, thus ensuring the controllability of the aging test. Since the output of the power supply to be tested is converted and fed back to the power grid while aging testing the power supply, electric energy waste is reduced and the test cost is lowered.

[0044] On the basis of the above embodiments:

[0045] As an optional embodiment, the electric energy conversion device 2 includes:

[0046] A transformer 21 is used to perform voltage conversion between the feeder cabinet 1 and the current conversion device, so as to transmit the alternating current output by the current conversion device to the power grid through the feeder cabinet 1. Among them, the first side of the transformer 21 is connected to the third end of the feeder cabinet 1, and the second side of the transformer 21 is respectively connected to the electrical parameter monitoring device and the current conversion device;

[0047] An electrical parameter monitoring device is used to detect the electrical energy specification on the second side of the transformer 21 as the target electrical energy specification. Among them, the electrical parameter monitoring device is connected to the current conversion device;

[0048] A current conversion device is used to convert the direct current output by the power supply to be measured into alternating current of the target electrical energy specification.

[0049] Specifically, in order to more accurately convert the direct current output by the power supply to be measured into alternating current consistent with the electrical energy specification of the power grid, in the embodiment of the present invention, voltage conversion is performed through the transformer 21, and current change is performed through the current conversion device. Starting from the direct current output by the power supply to be measured, since the electrical energy input to the power grid is alternating current, the direct current output by the power supply to be measured can first be converted into alternating current through the current conversion device. And since the voltage needs to be adjusted by the transformer 21 subsequently, the current conversion device can convert the direct current output by the power supply to be measured into alternating current of the target electrical energy specification during the conversion process. The target electrical energy specification is also the electrical energy specification on the second side of the transformer 21, which can be detected by the electrical parameter monitoring device. It is worth mentioning here that the transformer 21 can perform voltage conversion on the alternating current of the power grid provided by the feeder cabinet 1 and output it through the second side. What is detected by the electrical parameter monitoring device is the electrical energy specification (target electrical energy specification) on the second side of the transformer 21. That is to say, if the voltage of the target electrical energy specification is provided to the second side of the transformer 21, then the transformer 21 can output electrical energy consistent with the electrical energy specification of the power grid on the first side.

[0050] Among them, as can be seen from the above, in the embodiment of the present invention, current conversion and voltage conversion can be respectively performed under the cooperation of the electrical parameter monitoring device, the current conversion device and the transformer 21 to convert the direct current output by the power supply to be measured into alternating current consistent with the electrical energy specification of the power grid, and the structure of the electrical energy conversion device 2 in the embodiment of the present invention is simple.

[0051] Of course, in addition to this specific implementation manner, the electrical energy conversion device 2 can also be in other specific forms, and the embodiment of the present invention does not limit this here.

[0052] As an optional embodiment, the aging test system of the power supply includes an energy storage converter 22;

[0053] The energy storage converter 22 includes an electrical parameter monitoring device and a current conversion device.

[0054] Specifically, considering that the PCS (Power Conversion System, energy storage converter 22) itself has the ability to monitor electrical parameters and convert current, in the embodiments of the present invention, a PCS can be used to replace the electrical parameter monitoring device and the current conversion device, thereby simplifying the structure of the entire power aging test system.

[0055] Of course, in addition to the PCS, the electrical parameter monitoring device and the current conversion device can also have other implementation manners, which are not limited in the embodiments of the present invention.

[0056] As an optional embodiment, the power aging test system further includes:

[0057] A temperature measuring device 4 for detecting the real-time temperature at a specified position in the power aging test system, wherein the temperature measuring device 4 is arranged at the specified position in the power aging test system and is connected to the control device 3;

[0058] A display 5 for displaying the real-time temperature under the control of the control device 3, wherein the display 5 is connected to the control device 3.

[0059] Specifically, considering that the power aging test system may also generate a large amount of heat during operation, which may not only affect the work efficiency but also pose safety problems. Therefore, in the embodiments of the present invention, the real-time temperature at a specified position in the power aging test system can be monitored by the temperature measuring device 4 and displayed through the display 5 under the control of the control device 3. In this way, the staff can timely understand the real-time temperature at the specified position in the power aging test system through the display 5 and take timely measures when the temperature is abnormal, which is beneficial to improving the work efficiency of the power aging test system and reducing potential safety hazards.

[0060] Among them, the temperature measuring device 4 can be of various types, such as a thermometer, etc., which is not limited in the embodiments of the present invention.

[0061] As an optional embodiment, the power aging test system further includes:

[0062] A temperature regulating device for regulating the real-time temperature under the control of the control device 3, wherein the temperature regulating device is connected to the control device 3.

[0063] Specifically, in order to prevent the problem of long-term high temperature caused by the staff's failure to timely observe the real-time temperature of the display 5 or low processing efficiency, the power aging test system in the embodiments of the present invention further includes a temperature regulating device, which can regulate the real-time temperature under the control of the control device 3, that is, regulate the real-time temperature at a specified position in the aging test system to an ideal value, thereby preventing the power aging test device from being in a high-temperature state for a long time.

[0064] As an alternative embodiment, the temperature regulating device includes a plurality of fans disposed in the aging test system of the power supply.

[0065] Specifically, the fans have the advantages of simple structure and low cost, and the plurality of fans can accurately cool the key positions.

[0066] Of course, in addition to the plurality of fans disposed in the aging test system of the power supply, the temperature regulating device can also be of other various types, which are not limited in the embodiments of the present utility model.

[0067] As an alternative embodiment, the aging test system of the power supply further includes:

[0068] An oscilloscope 6 for sending the output waveform of the power supply under test collected to the control device 3, so that the control device 3 controls the display 5 to display the output waveform, wherein the oscilloscope 6 is respectively connected to the output end of the power supply under test and the control device 3.

[0069] Specifically, considering that during the aging test of the power supply, the quality of the output waveform of the power supply under test is also an important monitoring index, therefore, in the embodiments of the present utility model, the output waveform of the power supply under test collected can be sent to the control device 3 through the oscilloscope 6, so that the control device 3 controls the display 5 to display the output waveform. In this way, the staff can observe the output ripple and other conditions of the power supply under test through the output waveform.

[0070] As an alternative embodiment, the aging test system of the power supply further includes:

[0071] An electric energy meter for detecting the input power of the feeder cabinet 1 to the power supply under test and sending the input power to the control device 3, wherein the electric energy meter is respectively connected to the power supply under test and the control device 3;

[0072] A power detection device for detecting the total output power of the power supply under test and sending the total output power to the control device 3, so that the control device 3 determines the power conversion efficiency of the power supply under test based on the input power and the total output power, wherein the power detection device is respectively connected to the power supply under test and the control device 3.

[0073] Specifically, considering that during the aging test, the staff has a need to know the power conversion efficiency of the power supply under test, therefore, in the embodiments of the present utility model, on the one hand, the input power of the feeder cabinet 1 to the power supply under test is detected by the electric energy meter, and at the same time, the total output power of the power supply under test is detected by the power detection device. Based on this, the control device 3 can determine the power conversion efficiency of the power supply under test based on the input power and the total output power, and can also control the display 5 to display the power conversion efficiency.

[0074] Among them, the power detection device can be of various specific types, which are not limited in the embodiments of the present utility model.

[0075] As an alternative embodiment, the power supply to be tested includes multiple series-connected single crystal furnace heating power supplies.

[0076] For a better illustration of the embodiments of the present utility model, please refer to Figure 2 , Figure 2 which is a schematic structural diagram of another power supply aging test system provided by the present utility model. Figure 2 Multiple installation cabinets in Figure 2 can all be used to install single crystal furnace heating power supplies, so as to realize the series connection of multiple single crystal furnace heating power supplies and be respectively connected to the feeder cabinet 1 and the PCS. The control device 3 in

[0077] can communicate with the power supply to be tested and the PCS through various communication methods. For example, it can be 485 communication, etc., which are not limited in the embodiments of the present utility model.

[0078] Specifically, the single crystal furnace heating power supply refers to a modular power supply used to heat the single crystal furnace. Usually, multiple single crystal furnace heating power supplies can be used in series. Therefore, the power supply to be tested in the embodiments of the present utility model includes multiple series-connected single crystal furnace heating power supplies.

[0079] Of course, in addition to this specific type, the power supply to be tested can also be of many other types, which are not limited in the embodiments of the present utility model.

[0079] As an alternative embodiment, the power supply aging test system further includes:

[0080] A human-machine interaction device 7, which is used to send instructions to the control device 3 through it, so that the control device 3 simulates the working conditions of the power supply to be tested by adjusting the output power of the energy storage converter 22. Among them, the human-machine interaction device 7 is connected to the control device 3.

[0081] Specifically, considering that there are various working conditions and abnormal situations for the power supply to be tested, such as abnormal situations like overload or short circuit, etc., and various working conditions and abnormal situations of the power supply to be tested can be simulated by controlling the output power of the PCS. Therefore, in the embodiments of the present utility model, instructions can be sent to the control device 3 through the human-machine interaction device 7, so that the control device 3 simulates the working conditions of the power supply to be tested by adjusting the output power of the energy storage converter 22, so as to evaluate the safety performance, the reliability of the protection function, and the voltage and current stabilization performance of the power supply to be tested.

[0082] Among them, the human-machine interaction device 7 can be of various types. For example, it can be a human-machine interface or a DIP switch, etc., which are not limited in the embodiments of the present utility model.

[0083] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the embodiments, reference can be made to each other. It should also be noted that in this specification, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising one..." does not exclude the existence of another identical element in the process, method, article or device comprising the element.

[0084] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An aging test system for a power supply, characterized in that, Including: A feeder cabinet with its first end connected to the power grid, its second end connected to the input end of the power supply under test, and its third end connected to the output end of the power conversion device, for realizing the electrical connection between its first end and second end, and between its first end and third end; A power conversion device with its input end connected to the output end of the power supply under test, for converting the direct current output by the power supply under test into alternating current consistent with the power grid's power specifications and then transporting it to the power grid through the feeder cabinet; A control device respectively connected to the power supply under test and the power conversion device, for controlling the start and stop of the power supply under test and the power conversion device.

2. The aging test system for the power supply according to claim 1, wherein, The power conversion device includes: A transformer with its first side connected to the third end of the feeder cabinet and its second side respectively connected to the electrical parameter monitoring device and the current conversion device, for performing voltage conversion between the feeder cabinet and the current conversion device so as to transport the alternating current output by the current conversion device to the power grid through the feeder cabinet; The electrical parameter monitoring device connected to the current conversion device, for detecting the power specifications on the second side of the transformer as the target power specifications; The current conversion device, for converting the direct current output by the power supply under test into alternating current of the target power specifications.

3. The aging test system for a power supply according to claim 2, wherein, The aging test system of the power supply includes a power conversion system for energy storage (PCS); The power conversion system for energy storage includes the electrical parameter monitoring device and the current conversion device.

4. The aging test system for a power supply according to claim 3, wherein The aging test system of the power supply further includes: A temperature measuring device arranged at a specified position in the aging test system of the power supply and connected to the control device, for detecting the real-time temperature at the specified position in the aging test system of the power supply; A display connected to the control device, for displaying the real-time temperature under the control of the control device.

5. The aging test system for a power supply according to claim 4, wherein, The aging test system of the power supply further includes: A temperature regulating device connected to the control device, for regulating the real-time temperature under the control of the control device.

6. The aging test system for a power supply according to claim 5, characterized in that, The temperature regulating device includes a plurality of fans arranged in the aging test system of the power supply.

7. The aging test system for a power supply according to claim 3, wherein, The aging test system of the power supply further includes: An oscilloscope respectively connected to the output end of the power supply under test and the control device, for sending the collected output waveform of the power supply under test to the control device so that the control device controls the display to display the output waveform.

8. The aging test system for a power supply according to claim 3, characterized in that, The aging test system of the power supply further includes: An electricity meter respectively connected to the power supply under test and the control device, for detecting the input power of the feeder cabinet to the power supply under test and sending the input power to the control device; A power detection device respectively connected to the power supply under test and the control device, for detecting the total output power of the power supply under test and sending the total output power to the control device so that the control device determines the power conversion efficiency of the power supply under test based on the input power and the total output power.

9. The aging test system for a power supply according to claim 3, wherein The power supply under test includes a plurality of series-connected single crystal furnace heating power supplies.

10. The aging test system for the power supply according to any one of claims 3 to 9, characterized in that, The aging test system of the power supply further includes: A human-machine interaction device connected to the control device, which is used to issue instructions to the control device through it, so that the control device simulates the working conditions of the power supply under test by adjusting the output power of the energy storage converter.

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