CN114994435A - Mains supply power-off testing device and system - Google Patents
Mains supply power-off testing device and system Download PDFInfo
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- CN114994435A CN114994435A CN202210574873.8A CN202210574873A CN114994435A CN 114994435 A CN114994435 A CN 114994435A CN 202210574873 A CN202210574873 A CN 202210574873A CN 114994435 A CN114994435 A CN 114994435A
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- 238000012360 testing method Methods 0.000 title claims abstract description 53
- 230000006870 function Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000004590 computer program Methods 0.000 description 3
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- 238000004891 communication Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000012812 general test Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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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
- G01R31/003—Environmental or reliability tests
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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
- G01R31/40—Testing power supplies
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
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- Emergency Management (AREA)
- Power Engineering (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The invention relates to the technical field of electronic circuits, in particular to a mains supply power-off testing device and system. The utility model provides a commercial power outage testing arrangement, the user can be according to the needs of test, phase place angle information when setting up the commercial power outage through the angle setting module, and the controller is used for turning off according to angle control signal control on-off switch to control the commercial power and break off at predetermined phase place angle. Therefore, the commercial power can be guaranteed to be disconnected at the preset typical phase position, the phase accuracy when the commercial power is disconnected is guaranteed, the testing of the off-grid and on-grid integrated machine is facilitated, and meanwhile the testing accuracy and the testing efficiency are improved.
Description
Technical Field
The invention relates to the technical field of electronic circuits, in particular to a mains supply power-off testing device and system.
Background
The existing off-grid and grid-connected integrated machine usually needs to test the power supply function when a specific commercial power angle is powered off so as to ensure that a UPS (uninterruptible power supply) inverter can supply power uninterruptedly after being powered off. Generally, the test procedure needs to test whether the UPS in the grid-connected all-in-one machine can supply power uninterruptedly after the inverter is powered off in the UPS mode. Because the commercial power is disconnected at a typical angle, the UPS can start uninterrupted power supply at the typical angle, and the typical angle of the UPS is convenient for testers to grab waveforms and judge the accurate angle of the waveforms so as to determine the performance of the UPS. The phase angle of the sine wave of the mains supply is 360 degrees in one period. Therefore, during a general test, the mains supply needs to be disconnected at a typical phase angle to test whether the UPS can also compensate in time at the angle of the mains supply disconnection, so as to realize uninterrupted power supply, and during the test, the circular disconnection tests are generally performed according to the mains supply phase angles of 0, 45, 90, 135, 180, 225, 270, 315, and 359 in sequence. Therefore, the mains supply is disconnected at a typical angle, so that testers can conveniently grab the waveform of the disconnected mains supply to measure whether the UPS starts to compensate at the typical angle accurately, and the accurate test of the grid-connected integrated machine is completed.
In the prior art, generally, a mode of manually disconnecting an air switch is used to realize a cyclic disconnection test in which the phase angles of the mains supply are sequentially 0, 45, 90, 135, 180, 225, 270, 315, 359, but a mode of manually disconnecting the air switch cannot completely ensure that the phase angle when the mains supply is disconnected is a desired typical phase angle because of time delay and randomness, so that the test accuracy and efficiency of the off-grid and on-grid integrated machine are affected.
Disclosure of Invention
The invention mainly solves the technical problem that in the prior art, when the air switch is manually disconnected to control the typical phase angle of the commercial power to be disconnected, the time delay and the randomness are realized, and the test precision and the test efficiency are influenced.
A mains supply power-off testing device is used for controlling the mains supply to be powered off at any phase angle; the method comprises the following steps: the device comprises an on-off switch, a controller and an angle setting module;
the on-off switch is arranged on a line between the commercial power and the load to be tested; the angle setting module is used for receiving an angle setting instruction input from the outside to generate an angle control signal, and the angle setting instruction comprises phase angle information when the mains supply is powered off; the controller is used for controlling the on-off switch to be switched off according to the angle control signal so as to control the commercial power to be switched off at a preset phase angle.
In one embodiment, the power-off mode setting module is further included and is used for receiving a power-off mode setting instruction input from the outside to generate a power-off mode control signal; the controller is also used for controlling the power-off mode of the on-off switch according to the power-off mode control signal.
In one embodiment, the device further comprises an angle compensation setting module, wherein the angle compensation setting module is used for receiving an externally input angle compensation setting instruction to generate an angle compensation control signal; the controller is used for carrying out angle compensation according to the angle compensation control signal when the on-off switch is controlled to be turned off, so that the commercial power is switched off at a preset phase angle.
In one embodiment, the angle compensation device further comprises an input device for inputting one or more of the angle control signal, the power-off mode setting command or the angle compensation setting command.
In one embodiment, the input device includes one or more of an inputtable display screen, buttons, a keyboard, and a mouse.
In one embodiment, the on-off switch is a relay.
In one embodiment, the input device is an inputable display screen, and the inputable display screen comprises a setting interface, and the setting interface is used for inputting one or more of the angle control signal, the power-off mode setting instruction or the angle compensation setting instruction.
A power-off test system for an off-grid and grid-connected integrated machine comprises the mains supply power-off test device.
According to the mains supply power-off testing device of the embodiment, a user can set phase angle information when the mains supply is powered off through the angle setting module according to testing requirements, and the controller is used for controlling the on-off switch to be switched off according to the angle control signal so as to control the mains supply to be switched off at the preset phase angle. Therefore, the disconnection of the mains supply at the preset typical phase position can be ensured, the phase accuracy when the mains supply is disconnected is ensured, the testing of the off-grid and on-grid integrated machine is facilitated, and the testing precision and efficiency are improved.
Drawings
Fig. 1 is a schematic structural diagram of a commercial power outage testing apparatus according to an embodiment of the present application;
fig. 2 is a flowchart of a setting method of the commercial power outage testing apparatus according to an embodiment of the present application.
Detailed Description
The present invention will be described in further detail with reference to the following detailed description and accompanying drawings. Wherein like elements in different embodiments have been given like element numbers associated therewith. In the following description, numerous details are set forth in order to provide a better understanding of the present application. However, one skilled in the art will readily recognize that some of the features may be omitted or replaced with other elements, materials, methods in different instances. In some instances, certain operations related to the present application have not been shown or described in detail in order to avoid obscuring the core of the present application from excessive description, and it is not necessary for those skilled in the art to describe these operations in detail, so that they may be fully understood from the description in the specification and the general knowledge in the art.
Furthermore, the features, operations, or characteristics described in the specification may be combined in any suitable manner to form various embodiments. Also, the various steps or actions in the method descriptions may be transposed or transposed in order, as will be apparent to one of ordinary skill in the art. Thus, the various sequences in the specification and drawings are for the purpose of describing certain embodiments only and are not intended to imply a required sequence unless otherwise indicated where such sequence must be followed.
In the embodiment of the invention, in order to overcome the randomness and the time delay when the air switch is manually disconnected, the automatically-controlled mains supply power-off testing device is designed, so that technicians can conveniently set the phase angle of the mains supply disconnection according to the testing requirements to meet any testing scene. Meanwhile, the controller is adopted to realize intelligent control of commercial power, the on-off switch can be accurately disconnected at the set phase angle without time delay, and the test precision and the test efficiency are also improved.
The first embodiment is as follows:
referring to fig. 1, the present embodiment provides a commercial power outage testing apparatus, which is used to control a commercial power outage at any phase angle; it includes: the device comprises an on-off switch 4, a controller 3 and an angle setting module 2. The on-off switch 4 is used for being arranged on a line between commercial power and a load to be tested to control on-off of the commercial power, and the load to be tested of the embodiment refers to an off-grid and grid-connected integrated machine with a UPS. The angle setting module 2 is used for receiving an angle setting instruction input from the outside to generate an angle control signal, wherein the angle setting instruction comprises phase angle information when the mains supply is powered off; the phase angle information includes: the phase angle at mains power down is for example at 0, 45, 90, 135, 180, 225, 270, 315, 359 power down. The controller 3 is used for controlling the on-off of the on-off switch 4 according to the angle control signal so as to control the commercial power to be switched off at a preset phase angle. For example, the mains supply is controlled to be powered down at phase angles of 0, 45, 90, 135, 180, 225, 270, 315, 359, respectively, to test the uninterruptible power supply capability of the UPS in the off-grid integrated machine. The controller of this embodiment adopts an MCU (micro control unit).
In one embodiment, the testing device further comprises a power-off mode setting module 5, wherein the power-off mode setting module 5 is configured to receive a power-off mode setting instruction input from the outside to generate a power-off mode control signal; the controller 3 is also used to control the power-off mode of the on-off switch 4 according to the power-off mode control signal. For example, the power-off mode setting instruction is: power is cycled by phase angles of 0, 45, 90, 135, 180, 225, 270, 315, 359.
In one embodiment, the testing apparatus further comprises an angle compensation setting module 6, wherein the angle compensation setting module 6 is configured to receive an externally input angle compensation setting instruction to generate an angle compensation control signal; the controller 3 is configured to perform angle compensation according to the angle compensation control signal when the on-off switch 4 is controlled to be turned off, so that the commercial power is turned off at a preset phase angle. Since there may be a slight error in the long term of the device, for example, according to a preset command, the phase angle of the mains power cut-off is 45 degrees, but actually the angle of the cut-off is 47 degrees, at this time, a technician is required to input an angle compensation setting command to the angle compensation setting module 6, for example, the angle compensation setting command is: the forward compensation is carried out by two degrees, namely the phase angle of the commercial power disconnection is advanced by two degrees, namely, the disconnection is carried out at 45 degrees, so that the angle compensation is realized, and the measurement accuracy is ensured. For a person skilled in the art, controlling the phase angle when the mains is switched off is achieved by controlling the off-time of the on-off switch 4. Since the phase of one cycle of the commercial power (i.e., alternating current) is fixed, the phase angle at which the commercial power is cut off can be controlled by controlling the power-off time in each cycle.
In an embodiment, the test apparatus further comprises an input device 1, the input device 1 being adapted to input one or more of an angle control signal, a power down mode setting command or an angle compensation setting command.
In one embodiment, the input device includes one or more of an inputtable display screen, buttons, a keyboard, and a mouse.
The on-off switch 4 in this embodiment may be a switch that can be switched on and off by most circuits in the field of electricity, and a relay is selected in this embodiment.
Preferably, the input device 1 of the present embodiment is an inputtable display screen (i.e., a common touchable input display screen, a display screen similar to a mobile phone or a flat panel), and the inputtable display screen includes a setting interface for inputting an angle control signal, a power-off mode setting instruction, and an angle compensation setting instruction.
In another embodiment, the testing apparatus further includes a memory for storing a part of the program, the memory and the controller, and the angle setting module 2, the power-off mode setting module 5, and the angle compensation setting module 6, wherein when the angle setting module 2, the power-off mode setting module 5, and the angle compensation setting module 6 generate the angle control signal, the power-off mode control signal, and the angle compensation control signal, the corresponding program is invoked as needed.
The testing device of the embodiment comprises a shell, an on-off switch 4, a controller 3, an angle setting module 2, a power-off mode setting module 5 and an angle compensation setting module 6 are all arranged on a circuit board in the shell, and an input device 1 is arranged on the surface of the shell and is in communication connection with the angle setting module 2, the power-off mode setting module 5 and the angle compensation setting module 6 through cables. The wiring terminal of the on-off switch 4 is arranged outside the shell to facilitate wiring.
As figure 2 is the setting flow chart when the device of this application uses, based on the testing arrangement of this embodiment, the user can set up the angle that the commercial power was disconnected as required to realize the outage of commercial power arbitrary phase place angle between 0 ~ 359.
The following four items are designed as setting items when the device of the embodiment is used, the four items do not have set precedence requirements, and one or more items can be selectively set by a user according to requirements when the device is used.
Wherein, the setting item 01 can realize the total on and off of the relay by setting 0 and 1 through the input device at any time.
The setting item 02 can set a value of any angle (ranging from 0 to 359 degrees) through an input device, and the value is sent to the MCU after the setting is finished, so that the disconnection of the relay is controlled, and the disconnection of the mains supply at a specified phase angle is realized.
Since the setting item 02 has an error value to some extent, or an error generated by using the device for a long time, a compensation value can be calibrated through the setting item 03. After the compensation value is set, 02 items are set again, and more accurate power-off of the commercial power angle can be realized.
Setting 04 once the automatic mode is selected, the device controls the on-off switch 4 to be automatically closed for 30 seconds and then opened for 30 seconds, so that the phase angle when the mains supply is disconnected can be circularly opened according to the sequence of 0, 45, 90, 135, 180, 225, 270, 315 and 359 every time.
According to the testing device of the embodiment, any angle can be set on the setting interface, and the commercial power can be disconnected at any set phase angle. The power-off process has errors, and corresponding compensation values can be set through the setting interface, so that more accurate angle disconnection is realized. Therefore, the testing precision and efficiency of the off-grid and grid-connected integrated machine are improved.
Example two:
the embodiment provides an off-grid and integrated-body power-off test system, which comprises the commercial power-off test device provided by the first embodiment.
Those skilled in the art will appreciate that all or part of the functions of the various methods in the above embodiments may be implemented by hardware, or may be implemented by computer programs. When all or part of the functions of the above embodiments are implemented by a computer program, the program may be stored in a computer-readable storage medium, and the storage medium may include: a read only memory, a random access memory, a magnetic disk, an optical disk, a hard disk, etc., and the program is executed by a computer to realize the above functions. For example, the program may be stored in a memory of the device, and when the program in the memory is executed by the processor, all or part of the functions described above may be implemented. In addition, when all or part of the functions in the above embodiments are implemented by a computer program, the program may be stored in a storage medium such as a server, another computer, a magnetic disk, an optical disk, a flash disk, or a removable hard disk, and may be downloaded or copied to a memory of a local device, or may be version-updated in a system of the local device, and when the program in the memory is executed by a processor, all or part of the functions in the above embodiments may be implemented.
The present invention has been described in terms of specific examples, which are provided to aid in understanding the invention and are not intended to be limiting. For a person skilled in the art to which the invention pertains, several simple deductions, modifications or substitutions may be made according to the idea of the invention.
Claims (8)
1. A mains supply power-off testing device is used for controlling the mains supply to be powered off at any phase angle; it is characterized by comprising: the device comprises an on-off switch, a controller and an angle setting module;
the on-off switch is arranged on a line between the commercial power and the load to be tested; the angle setting module is used for receiving an angle setting instruction input from the outside to generate an angle control signal, and the angle setting instruction comprises phase angle information when the mains supply is powered off; the controller is used for controlling the on-off switch to be switched off according to the angle control signal so as to control the commercial power to be switched off at a preset phase angle.
2. The mains power failure testing device of claim 1, further comprising a power failure mode setting module, wherein the power failure mode setting module is configured to receive an externally input power failure mode setting instruction to generate a power failure mode control signal; the controller is also used for controlling the power-off mode of the on-off switch according to the power-off mode control signal.
3. The commercial power outage test device according to claim 2, further comprising an angle compensation setting module, wherein the angle compensation setting module is configured to receive an externally input angle compensation setting command to generate an angle compensation control signal; the controller is used for carrying out angle compensation according to the angle compensation control signal when the on-off switch is controlled to be turned off, so that the commercial power is switched off at a preset phase angle.
4. The electrical mains outage test apparatus of claim 3, further comprising an input device for inputting one or more of the angle control signal, the outage mode setting command, or the angle compensation setting command.
5. The device of claim 4, wherein the input device comprises one or more of an inputtable display screen, a key, a keyboard, and a mouse.
6. The mains power outage test apparatus of claim 1, wherein the on-off switch is a relay.
7. The mains power failure testing device of claim 4, wherein the input device is an inputtable display screen including a setting interface thereon, the setting interface being configured to input one or more of the angle control signal, the power failure mode setting command, or the angle compensation setting command.
8. An off-grid and grid-connected all-in-one machine power-off test system, which is characterized by comprising the mains power-off test device as claimed in any one of claims 1 to 7.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210574873.8A CN114994435A (en) | 2022-05-24 | 2022-05-24 | Mains supply power-off testing device and system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210574873.8A CN114994435A (en) | 2022-05-24 | 2022-05-24 | Mains supply power-off testing device and system |
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| CN114994435A true CN114994435A (en) | 2022-09-02 |
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| CN202210574873.8A Pending CN114994435A (en) | 2022-05-24 | 2022-05-24 | Mains supply power-off testing device and system |
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2022
- 2022-05-24 CN CN202210574873.8A patent/CN114994435A/en active Pending
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