CN116047347A - Offline test platform for low-voltage AC/DC power supply equipment - Google Patents
Offline test platform for low-voltage AC/DC power supply equipment Download PDFInfo
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- CN116047347A CN116047347A CN202211581802.7A CN202211581802A CN116047347A CN 116047347 A CN116047347 A CN 116047347A CN 202211581802 A CN202211581802 A CN 202211581802A CN 116047347 A CN116047347 A CN 116047347A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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Abstract
The invention discloses an offline test platform of low-voltage alternating current and direct current power supply equipment, which comprises a three-phase power supply voltage regulation module, a direct current adjustable power supply module, an adjustable load module and a communication debugging test host; the input/output interface is connected with external test equipment, and the connecting wire and the plug are suitable for equipment interfaces of different manufacturers; the three-phase power voltage regulating module is electrically connected with the direct-current adjustable power module, and the direct-current adjustable power module is electrically connected with the communication debugging test host. The invention carries out off-line test on the equipment such as a charging module, a UPS inversion module, a collection measurement and control module, a central monitor, an insulation monitor and the like by arranging an integrated off-line test platform of the low-voltage AC/DC power supply equipment, and carries out off-line test on the equipment which is maintained or newly purchased by the equipment through a corresponding universal module interface and then takes the equipment to a transformer substation for on-site use. The problems that equipment modules with hidden danger are directly taken to the site for use, potential safety hazards are brought to the safe operation of equipment, and meanwhile, waste of manpower and material resources is brought are avoided.
Description
Technical Field
The invention relates to the technical field of transformer substation AC/DC equipment detection, in particular to a low-voltage AC/DC power supply equipment offline test platform.
Background
The transformer substation AC/DC equipment has faults in operation, such as a charging module, a UPS inversion module, an acquisition and measurement and control module, a central monitor, an insulation monitor and the like, and a large number of equipment modules are damaged each year, and the general processing mode is to disassemble and repair the equipment, and install the repaired equipment on site after the equipment is repaired. Or only a new device replacement can be purchased for a device that cannot be repaired. For the equipment which is maintained or newly purchased, the charging module, the UPS inversion module, the acquisition measurement and control module, the central monitor and the insulation monitor do not have electrified test conditions before replacement, and only the newly purchased or repaired equipment can be directly taken to a transformer substation site to be put into operation, but the untested equipment is directly taken to the site to be replaced, so that the following problems exist:
1. the newly purchased or maintained equipment is directly operated on site, and then the equipment is not repaired at all, so that the problems remain or the root cannot be lightened, the defect treatment time is prolonged, and a large amount of manpower and material resources are wasted by repeated treatment.
2. The newly purchased or maintained die equipment has problems in a few days after field operation, even causes new problems, brings potential safety hazards to safe operation of the equipment and simultaneously brings waste of manpower and material resources.
3. The maintained equipment is not electrified to be tested, and internal short circuit possibly occurs, so that the safety problems of tripping an air-break or abnormal operation of other equipment and the like are caused after installation and replacement.
4. Whether the communication of the newly purchased and maintained equipment is normal or not can not be tested, so that the communication is abnormal after field installation, the equipment needs to be returned to a factory again for maintenance, and the equipment is delayed to eliminate defects.
Therefore, an offline testing platform for equipment is needed to be provided, offline testing can be conducted on different alternating currents and direct currents, normal use of equipment of a transformer substation is guaranteed, potential safety hazards are effectively eliminated, and stable operation of the transformer substation is guaranteed.
Disclosure of Invention
This section is intended to outline some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description summary and in the title of the application, to avoid obscuring the purpose of this section, the description summary and the title of the invention, which should not be used to limit the scope of the invention.
The present invention has been made in view of the problems occurring in the prior art.
Therefore, the technical problem to be solved by the invention is that when the AC/DC equipment of the transformer substation is replaced, the new equipment is directly put into use without detection, potential safety hazards exist, and once the new equipment is damaged, the new equipment is dismantled again, and the replacement is time-consuming and labor-consuming.
In order to solve the technical problems, the invention provides the following technical scheme: the off-line test platform for the low-voltage AC/DC power supply equipment comprises a three-phase power supply voltage regulation module, a DC adjustable power supply module, an adjustable load module and a communication debugging test host; the input/output interface is connected with external test equipment, and the connecting wire and the plug are suitable for equipment interfaces of different manufacturers; the three-phase power voltage regulating module is electrically connected with the direct-current adjustable power module, and the direct-current adjustable power module is electrically connected with the communication debugging test host.
As a preferable scheme of the off-line test platform of the low-voltage AC/DC power supply equipment, the invention comprises the following steps: the three-phase power supply voltage regulating module comprises a three-phase voltage regulating transformer and a controller, and the output alternating voltage can be set randomly through the controller;
the input end of the three-phase power voltage regulating module is connected with the input of an external three-phase power supply, and provides an external test equipment power supply and an internal working power supply for each module for the test system.
As a preferable scheme of the off-line test platform of the low-voltage AC/DC power supply equipment, the invention comprises the following steps: the output end of the three-phase power supply voltage regulating module is connected with an internal or external output interface;
the internal connection comprises: the system comprises a direct current adjustable power module, a communication debugging test host and an instrument indicator lamp;
the external connection includes: the device comprises a tested charging module and a tested UPS power module.
As a preferable scheme of the off-line test platform of the low-voltage AC/DC power supply equipment, the invention comprises the following steps: the direct current adjustable power supply module comprises a high-frequency switch power supply module and a module controller, and the output direct current can be set arbitrarily through the controller;
the three-phase alternating current is changed into a stable direct current power supply with adjustable output through AC/DC, and the stable direct current power supply supplies power for external test equipment and an internal control circuit;
the output end of the direct current adjustable power supply module is connected with an external output interface, and comprises a UPS direct current input power supply, a direct current monitoring device, a direct current insulation monitoring device, a storage battery inspection device, a measurement and control module and an acquisition module, and the direct current adjustable power supply module is used for providing a direct current power supply for equipment waiting to be tested.
As a preferable scheme of the off-line test platform of the low-voltage AC/DC power supply equipment, the invention comprises the following steps: the adjustable load module comprises an adjustable resistance load and a cooling fan, an external interface is configured and can be used as an adjustable load of tested equipment, and the input end of the adjustable load module is connected with the external interface and can improve the test load for the test equipment.
As a preferable scheme of the off-line test platform of the low-voltage AC/DC power supply equipment, the invention comprises the following steps:
the communication debugging test host comprises a computer host and a communication interface;
the input/output interface is connected with external tested equipment through various adapting connecting wires and plugs.
As a preferable scheme of the off-line test platform of the low-voltage AC/DC power supply equipment, the invention comprises the following steps:
when the charging module is tested, the charging module is connected with the three-phase power supply voltage regulation module and the adjustable load module, and is connected with alternating current and load;
regulating the alternating current input voltage to be rated voltage;
if the charging module is abnormal, alarming through a warning lamp, so that the charging module is returned to a factory or changed;
if the charging module is normal, operating an indicator lamp to be on, so as to enter a characteristic test;
the characteristic test includes: testing the range of the alternating current input voltage from 323V to 456V, testing the alternating current input voltage below 323V and testing the alternating current input voltage above 456V;
if the abnormality occurs, returning the charging module to a factory or changing goods, and after passing the test, performing operation test and characteristic test;
the characteristic test comprises a voltage stabilization and a current stabilization precision test;
the operation test comprises the following steps:
when the load current is regulated to be 50% of the rated current, whether the charging module is normally loaded or not;
when the load current is adjusted to 150% of rated current, whether the charging module automatically limits the current or not;
after passing the operation test, the adjustable load module adjusts the load to 50%, and the charging module is subjected to a baking machine test;
after the charging module passes the baking machine test, if the charging module is abnormal, returning the charging module to a factory or changing goods, and if the charging module passes the test, performing field installation to eliminate defects.
As a preferable scheme of the off-line test platform of the low-voltage AC/DC power supply equipment, the invention comprises the following steps:
when testing the UPS inversion module, the UPS inversion module is connected with the three-phase power supply voltage regulating module and the adjustable load module, and then the alternating current input voltage is regulated to be rated voltage;
if the fault occurs, alarming through a warning lamp, so that the UPS inverter module is returned to a factory or changed;
if the test result is normal, the running indicator lamp is on, so that the load test and the function test are carried out;
the on-load test comprises the following steps:
regulating the load modules from 0 to 100% and from 100% to 0, the alternating current output voltage not exceeding + -10% of the rated output voltage;
when the load is regulated to 120% of the rated output power of the UPS module, the module can stably output for at least 10 minutes;
the functional test comprises:
switching off the AC input, and switching the AC power failure to the power supply time of the storage battery of less than or equal to 0ms;
the direct current input is disconnected, and the test switching bypass power supply time is less than or equal to 4ms;
after the on-load test and the functional test are passed, if abnormality occurs, the UPS inverter module is returned to a factory or changed goods by alarming through an alarm lamp;
if the load is normal, the load is adjusted to 50% by an adjustable load module, and a baking machine test is performed;
after passing the baking machine test, the UPS module returns the charging module to the factory or changes goods if abnormal, and if passing the test, the UPS module is installed on site to eliminate the defect.
As a preferable scheme of the off-line test platform of the low-voltage AC/DC power supply equipment, the invention comprises the following steps:
when the communication test is conducted, direct current and connection communication are accessed, and power-on is conducted;
if the communication module is abnormal, alarming through an alarm lamp, so that the communication module is returned to a factory or changed;
if the communication test is performed, the operation indicator lamp is turned on, so that the communication test is performed;
testing the communication module through communication debugging software, checking the message and judging the abnormal condition of the communication module;
if the communication module is abnormal, the communication lamp does not flash, so that the communication module is returned to a factory or changed;
if the test is passed, the baking machine test is carried out, and after the baking machine test is passed, the site installation is carried out, and if the baking machine test cannot be passed, the communication module is returned to a factory or replaced.
As a preferable scheme of the off-line test platform of the low-voltage AC/DC power supply equipment, the invention comprises the following steps: the baking machine test is to adjust the alternating voltage of the voltage regulator to be the adaptive voltage, adjust the direct current load to make the output current of the module be 50% of the rated current, and maintain the state test for a period of time without problems.
The invention has the beneficial effects that: the invention carries out off-line test on the equipment such as a charging module, a UPS inversion module, a collection measurement and control module, a central monitor, an insulation monitor and the like by arranging an integrated off-line test platform of the low-voltage AC/DC power supply equipment, and carries out off-line test on the equipment which is maintained or newly purchased by the equipment through a corresponding universal module interface and then takes the equipment to a transformer substation for on-site use. The problems that equipment modules with hidden danger are directly taken to the site for use, potential safety hazards are brought to the safe operation of equipment, and meanwhile, waste of manpower and material resources is brought are avoided.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:
FIG. 1 is a diagram illustrating an offline test platform according to an embodiment of the present invention.
Fig. 2 is a flow chart of a test of a charging module according to an embodiment of the invention.
Fig. 3 is a flowchart of a UPS inverter module test in an embodiment of the invention.
Fig. 4 is a flow chart of a communication test in an embodiment of the invention.
Detailed Description
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present invention is not limited to the specific embodiments disclosed below.
Further, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic can be included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
Example 1
Referring to fig. 1, in a first embodiment of the present invention, an offline test platform for low-voltage ac/dc power equipment is provided, which includes a three-phase power voltage regulation module 100, a dc adjustable power module 200, an adjustable load module 300, and a communication debug test host 400;
the input/output interface is connected with external test equipment, and the connecting wire and the plug are suitable for equipment interfaces of different manufacturers;
the three-phase power voltage regulating module 100 is electrically connected with the direct-current adjustable power module 200, and the direct-current adjustable power module 200 is electrically connected with the communication debugging test host 400.
The three-phase power voltage regulating module 100 comprises a three-phase voltage regulating transformer and a controller, and the output alternating voltage can be set arbitrarily through the controller;
the input end of the three-phase power voltage regulating module 100 is connected with the input of an external three-phase power supply, and provides an external test equipment power supply and an internal working power supply for each module for the test system.
The output end of the three-phase power supply voltage regulating module 100 is connected with an internal or external output interface;
the internal connection comprises: the system comprises a direct current adjustable power module 200, a communication debugging test host 300 and an instrument indicator lamp;
the external connection includes: the device comprises a tested charging module and a tested UPS power module.
The direct current adjustable power supply module 200 comprises a high-frequency switch power supply module and a module controller, and the output direct current can be set arbitrarily through the controller;
the three-phase alternating current is changed into a stable direct current power supply with adjustable output through AC/DC, and the stable direct current power supply supplies power for external test equipment and an internal control circuit;
the output end of the DC adjustable power module 200 is connected with an external output interface, and comprises a UPS DC input power supply, a DC monitoring device, a DC insulation monitoring device, a storage battery inspection device, a measurement and control module and an acquisition module, and provides a DC power supply for the equipment waiting to be tested.
The adjustable load module 300 comprises an adjustable resistance load and a cooling fan, is provided with an external interface, can be used as an adjustable load of tested equipment, and the input end of the adjustable load module 300 is connected with the external interface to improve the test load for the test equipment.
In order to ensure the long-term stable operation of the test system, a temperature controller is arranged in the test system, and when the internal temperature of the system reaches a set value, an internal cooling fan is started to ensure the internal temperature of the system to be in a controllable range.
The communication debugging test host 400 comprises a computer host and a communication interface;
the input/output interface is connected with the external tested equipment through various adapting connecting wires and plugs.
The input/output interface is composed of connecting wires and aviation plugs which are suitable for the interfaces of equipment of various main stream factories, and the input/output interface is connected with external tested equipment through various connecting wires and plugs, so that the input/output interface plays a role in quick and reliable connection with the external equipment. The device to be tested is provided with a plurality of quick interfaces with different types and specifications according to the module interfaces with different models of different manufacturers, namely the interfaces at the end of the test system are unified, and the side of the device to be tested is provided with a quick interface which is suitable for the charging modules with different specifications of different manufacturers, so that when the device to be tested with a certain model is required to be tested, the quick interface with the corresponding specification is selected.
Example 2
Referring to fig. 2, a second embodiment of the present invention is based on the previous embodiment, and this embodiment proposes a testing method for a charging module.
When the charging module is tested, the charging module is connected with the three-phase power supply voltage regulating module 100 and the adjustable load module 300, and is connected with alternating current and load;
regulating the alternating current input voltage to be rated voltage;
if the charging is abnormal, alarming through a warning lamp, so that the charging module is returned to a factory or changed;
if the charging is normal, operating the indicator lamp to be on, so as to enter a characteristic test;
the characteristic test comprises the following steps: testing the range of the alternating current input voltage from 323V to 456V, testing the alternating current input voltage below 323V and testing the alternating current input voltage above 456V;
if the abnormality occurs, returning the charging module to a factory or changing goods, and after passing the test, performing operation test and characteristic test;
the characteristic test comprises a voltage stabilization and a current stabilization precision test;
specifically, the test of the steady flow precision comprises,
and under the rated value of the alternating current input voltage, when the direct current output current of the tested charging device is set to be one value of 20 percent, 50 percent and 100 percent of the rated value, the measured direct current actual measurement value at the moment is the output current setting value of the tested charging device, and the measured values of other points are compared with the output current setting value of the tested charging device.
When the input voltage of the alternating current power supply is respectively regulated to be changed in three values of 120-100-85% of the rated value, the external resistor value is regulated to enable the direct current output voltage of the tested charging device to be respectively changed in the range of 90-120% of the nominal voltage value, and the direct current output value is measured. The relative error between the measured value of the direct current output current and the setting value is the steady-flow precision of the device.
Specifically, the test of the voltage stabilizing precision comprises,
and when the direct current load current is regulated to be 50% of the rated output current under the rated value of the alternating current input voltage, regulating and determining the output voltage value of the tested charging device, wherein the measured direct current voltage actual measurement value at the moment is the output voltage setting value of the tested charging device, and the measured values of other points are compared with the output voltage setting value of the tested charging device.
And (3) generally taking three test points, and recommending a minimum output voltage value, a nominal voltage value and a floating charge voltage value. When the input voltage of the AC power supply is respectively regulated to be changed in three values of 120 percent to 100 percent and 85 percent of the rated value, the external resistance value is regulated to ensure that the DC output current of the tested charging device is respectively 0 percent to 20 percent to 50 percent of the rated value
At 100% four points, the dc voltage output value was measured. The relative error between the measured value of the direct current output voltage and the setting value is the voltage stabilizing precision of the device.
The running test comprises the following steps:
when the load current is regulated to be 50% of the rated current, whether the charging module is normally loaded or not;
when the load current is adjusted to 150% of rated current, whether the charging module automatically limits the current or not;
after passing the operation test, the adjustable load module 300 adjusts the load to 50%, and the charging module is subjected to a baking machine test;
after the charging module passes the baking machine test, if the charging module is abnormal, returning the charging module to a factory or changing goods, and if the charging module passes the test, performing field installation to eliminate defects.
Example 3
Referring to fig. 3, a third embodiment of the present invention is based on the above two embodiments, and this embodiment proposes a testing method for a UPS inverter module.
When testing the UPS inversion module, the UPS inversion module is connected with the three-phase power supply voltage regulating module 100 and the adjustable load module 300, and then the alternating current input voltage is regulated to be rated voltage;
if the fault occurs, alarming through a warning lamp, so that the UPS inverter module is returned to a factory or changed;
if the test result is normal, the running indicator lamp is on, so that the load test and the function test are carried out;
the on-load test comprises the following steps:
regulating the load modules from 0 to 100% and from 100% to 0, the alternating current output voltage not exceeding + -10% of the rated output voltage;
when the load is regulated to 120% of the rated output power of the UPS module, the module can stably output for at least 10 minutes;
the functional test comprises the following steps:
switching off the AC input, and switching the AC power failure to the power supply time of the storage battery of less than or equal to 0ms;
the direct current input is disconnected, and the test switching bypass power supply time is less than or equal to 4ms;
after the on-load test and the functional test are passed, if abnormality occurs, the UPS inverter module is returned to a factory or changed goods by alarming through an alarm lamp;
if the load is normal, the load is adjusted to 50% by the adjustable load module 300, and the baking machine test is performed;
after passing the baking machine test, the UPS module returns the charging module to the factory or changes goods if abnormal, and if passing the test, the UPS module is installed on site to eliminate the defect.
Example 4
Referring to fig. 4, a fourth embodiment of the present invention is based on the above three embodiments, and this embodiment proposes a testing method for communication testing.
When the communication test is conducted, direct current and connection communication are accessed, and power-on is conducted;
if the communication module is abnormal, alarming through an alarm lamp, so that the communication module is returned to a factory or changed;
if the communication test is performed, the operation indicator lamp is turned on, so that the communication test is performed;
testing the communication module through communication debugging software, checking the message and judging the abnormal condition of the communication module;
if the communication module is abnormal (no message or data is transmitted or received), the communication lamp does not flash, and the alarm lamp gives an alarm, so that the communication module is returned to a factory or changed;
if the test is passed, the baking machine test is carried out, and after the baking machine test is passed, the site installation is carried out, and if the baking machine test cannot be passed, the communication module is returned to a factory or replaced.
Specifically, the communication debugging software mainly comprises serial port communication debugging software and TCP (transmission control protocol) network port communication debugging software.
The serial port communication debugging software is mainly used in the field of single chip microcomputer control, communication between devices is usually carried out in a serial communication mode, and a hardware communication network which is usually adopted is RS485/RS422/RS232 and the like. Various devices, acquisition modules and the like of the AC/DC power supply system basically adopt serial communication for internal communication, data detection can be carried out on the equipment communication process through corresponding serial debugging tool software, the debugging process is realized, computer communication software such as serial debugging assistant and the like is needed, the communication process is monitored, data acquisition is carried out, and data analysis is carried out for judging whether the communication is normal or not.
The TCP network port communication debugging software mainly comprises the following steps: the communication of the upper computer of the AC/DC power supply equipment can be a serial port or an Ethernet port, and if the communication is a network port, a TCP network port communication debugging software monitoring device can be adopted to send and receive the message, so that data analysis is carried out to preliminarily judge that the communication sending and receiving are normal.
The specific operation steps are slightly different according to different software, the power supply of the device to be tested is connected to the direct current power supply output end of the test platform, the device is electrified, the communication interface of the device to be tested is connected with the serial port or the internet access of the corresponding communication port of the debugging computer, the debugging software is opened on the debugging computer, the message data is observed and received on the visual window interface of the software, and whether the communication interface and the communication function of the device to be tested are normal or not is analyzed and judged. The communication test can be carried out on equipment with communication interfaces such as a direct current monitoring device, a direct current insulation monitoring device, a storage battery inspection device, a measurement and control module, an acquisition module and the like through corresponding communication tests.
The general principle is that equipment to be tested is powered on, a field working environment is simulated, then detection is carried out according to technical requirements of corresponding equipment, devices and modules in a procedure to determine whether the equipment works normally or not, whether functions are complete or not, whether the technology meets the operation requirement or not, thereby realizing the offline detection of the equipment, and after the offline detection is passed, the equipment is installed and used in a transformer substation.
It is important to note that the construction and arrangement of the present application as shown in a variety of different exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters (e.g., temperature, pressure, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter described in this application. For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of present invention. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present inventions. Therefore, the invention is not limited to the specific embodiments, but extends to various modifications that nevertheless fall within the scope of the appended claims.
Furthermore, in an effort to provide a concise description of the exemplary embodiments, all features of an actual implementation may not be described (i.e., those not associated with the best mode presently contemplated for carrying out the invention, or those not associated with practicing the invention).
It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure.
It should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention may be modified or substituted without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered in the scope of the claims of the present invention.
Claims (10)
1. The utility model provides a low voltage alternating current-direct current power supply equipment off-line test platform which characterized in that: comprising the steps of (a) a step of,
the system comprises a three-phase power supply voltage regulating module (100), a direct current adjustable power supply module (200), an adjustable load module (300) and a communication debugging test host (400);
the input/output interface is connected with external test equipment, and the connecting wire and the plug are suitable for equipment interfaces of different manufacturers;
the three-phase power supply voltage regulating module (100) is electrically connected with the direct current adjustable power supply module (200), and the direct current adjustable power supply module (200) is electrically connected with the communication debugging test host (400).
2. The offline test platform of low-voltage ac/dc power supply equipment according to claim 1, wherein: the three-phase power supply voltage regulating module (100) comprises a three-phase voltage regulating transformer and a controller, and the output alternating voltage can be set arbitrarily through the controller;
the input end of the three-phase power voltage regulating module (100) is connected with the input of an external three-phase power supply, and provides an external test equipment power supply and an internal working power supply for each module for the test system.
3. The offline test platform of low-voltage ac/dc power supply equipment according to claim 2, wherein: the output end of the three-phase power supply voltage regulating module (100) is connected with an internal or external output interface;
the internal connection comprises: the system comprises a direct current adjustable power module (200), a communication debugging test host (300) and an instrument indicator lamp;
the external connection includes: the tested charging module and the tested UPS power module wait for the test equipment.
4. The offline test platform of low-voltage ac/dc power supply equipment according to claim 1, wherein: the direct current adjustable power supply module (200) comprises a high-frequency switch power supply module and a module controller, and the output direct current can be set arbitrarily through the controller;
the three-phase alternating current is changed into a stable direct current power supply with adjustable output through AC/DC, and the stable direct current power supply supplies power for external test equipment and an internal control circuit;
the output end of the direct current adjustable power supply module (200) is connected with an external output interface, and comprises a UPS direct current input power supply, a direct current monitoring device, a direct current insulation monitoring device, a storage battery inspection device, a measurement and control module and an acquisition module, and provides a direct current power supply for equipment to be tested.
5. The offline test platform of low-voltage ac/dc power supply equipment according to claim 1, wherein: the adjustable load module (300) comprises an adjustable resistance load and a cooling fan, an external interface is configured and can be used as an adjustable load of tested equipment, and the input end of the adjustable load module (300) is connected with the external interface and can provide a test load for the test equipment.
6. The offline test platform of low-voltage ac/dc power supply equipment according to claim 4 or 5, wherein:
the communication debugging test host (400) comprises a computer host and a communication interface;
the input/output interface is connected with external tested equipment through various adapting connecting wires and plugs.
7. The offline test platform of the low-voltage ac/dc power supply device according to claim 6, wherein:
when the charging module is tested, the charging module is connected with the three-phase power supply voltage regulating module (100) and the adjustable load module (300) and is connected with alternating current and load;
regulating the alternating current input voltage to be rated voltage;
if the charging module is abnormal, alarming through a warning lamp, so that the charging module is returned to a factory or changed;
if the charging module is normal, operating an indicator lamp to be on, so as to enter a characteristic test;
the characteristic test includes: testing the range of the alternating current input voltage from 323V to 456V, testing the alternating current input voltage below 323V and testing the alternating current input voltage above 456V;
if the abnormality occurs, returning the charging module to a factory or changing goods, and after passing the test, performing operation test and characteristic test;
the characteristic test comprises voltage stabilization, current stabilization precision test and the like;
the operation test comprises the following steps:
when the load current is regulated to be 50% of the rated current, whether the charging module is normally loaded or not;
when the load current is adjusted to 150% of rated current, whether the charging module automatically limits the current or not;
after passing the operation test, the adjustable load module (300) adjusts the load to 50%, and the charging module is subjected to a baking machine test;
after the charging module passes the baking machine test, if the charging module is abnormal, returning the charging module to a factory or changing goods, and if the charging module passes the test, performing field installation to eliminate defects.
8. The offline test platform of low-voltage ac/dc power supply equipment according to claim 3, wherein:
when testing the UPS inversion module, the UPS inversion module is connected with the UPS inversion module through the three-phase power supply voltage regulating module (100) and the adjustable load module (300), and then the alternating current input voltage is regulated to be rated voltage;
if the fault occurs, alarming through a warning lamp, so that the UPS inverter module is returned to a factory or changed;
if the test result is normal, the running indicator lamp is on, so that the load test and the function test are carried out;
the on-load test comprises the following steps:
regulating the load modules from 0 to 100% and from 100% to 0, the alternating current output voltage not exceeding + -10% of the rated output voltage;
when the load is regulated to 120% of the rated output power of the UPS module, the module can stably output for at least 10 minutes;
the functional test comprises:
switching off the AC input, and switching the AC power failure to the power supply time of the storage battery of less than or equal to 0ms;
the direct current input is disconnected, and the test switching bypass power supply time is less than or equal to 4ms;
after the on-load test and the functional test are passed, if abnormality occurs, the UPS inverter module is returned to a factory or changed goods by alarming through an alarm lamp;
if the load is normal, the load is adjusted to 50% by an adjustable load module (300), and a baking machine test is performed;
after passing the baking machine test, the UPS module returns the charging module to the factory or changes goods if abnormal, and if passing the test, the UPS module is installed on site to eliminate the defect.
9. The offline test platform of low-voltage ac/dc power supply equipment according to claim 8, wherein:
when the communication test is conducted, direct current and connection communication are accessed, and power-on is conducted;
if the communication module is abnormal, alarming through an alarm lamp, so that the communication module is returned to a factory or changed;
if the communication test is performed, the operation indicator lamp is turned on, so that the communication test is performed;
testing the communication module through communication debugging software, checking the message and judging the abnormal condition of the communication module;
if the communication module is abnormal, the communication lamp does not flash, so that the communication module is returned to a factory or changed;
if the test is passed, the baking machine test is carried out, and after the baking machine test is passed, the site installation is carried out, and if the baking machine test cannot be passed, the communication module is returned to a factory or replaced.
10. The offline test platform of the low-voltage ac/dc power supply device according to any one of claims 7 to 9, wherein: the baking machine test is to adjust the alternating voltage of the voltage regulator to be the adaptive voltage, adjust the direct current load to make the output current of the module be 50% of the rated current, and maintain the state test for a period of time without problems.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117233625A (en) * | 2023-11-16 | 2023-12-15 | 西安图为电气技术有限公司 | Energy storage module test equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117233625A (en) * | 2023-11-16 | 2023-12-15 | 西安图为电气技术有限公司 | Energy storage module test equipment |
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