CN107390140B - Power supply testing method and equipment - Google Patents
Power supply testing method and equipment Download PDFInfo
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- CN107390140B CN107390140B CN201710602132.5A CN201710602132A CN107390140B CN 107390140 B CN107390140 B CN 107390140B CN 201710602132 A CN201710602132 A CN 201710602132A CN 107390140 B CN107390140 B CN 107390140B
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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Abstract
the present disclosure provides a method and apparatus for testing a power supply, the method for testing a power supply including: connecting a power supply with an adjustable load through a switch; setting the resistance value of the adjustable load according to the resistance value of the actual load, wherein the resistance value of the adjustable load does not exceed the resistance value of the actual load; measuring the minimum value of the output voltage of the power supply at the moment when the switch is closed; and when the measured voltage value is not less than the voltage value required when the actual load works normally, outputting indication information that the power supply passes the test. The scheme provided by the disclosure tests the transient voltage output by the power supply by simulating the moment of the change of the working state of the actual load, and can conveniently and quickly determine whether the transient voltage output by the power supply can ensure the normal work of the actual load.
Description
Technical Field
The present disclosure relates to the field of electronic technologies, and in particular, to a method and an apparatus for testing a power supply.
Background
When the power supply is selected, a plurality of alternative power supplies need to be tested. Loads such as WIFI, LED driven, require more rigorous testing of the power supply as the load size may be subject to frequent sudden changes.
disclosure of Invention
The embodiment of the disclosure provides a method and a device for testing a power supply, and the technical scheme is as follows:
according to a first aspect of embodiments of the present disclosure, a method for testing a power supply is provided, including:
Connecting a power supply with an adjustable load through a switch;
Setting the resistance value of the adjustable load according to the resistance value of the actual load, wherein the resistance value of the adjustable load does not exceed the resistance value of the actual load;
measuring the minimum value of the output voltage of the power supply at the moment when the switch is closed;
And when the measured voltage value is not less than the voltage value required when the actual load works normally, outputting indication information that the power supply passes the test.
According to the scheme, the adjustable load is utilized to simulate actual loads such as WIFI (wireless fidelity), LED (light emitting diode) driving and the like, the power supply is switched on with the adjustable load at the moment of switching on the switch, the power supply is instantly converted into a heavy-load state from a no-load state, a very large peak can appear in the current at the moment of sudden change of a working state, and meanwhile the output voltage of the power supply can be pulled down.
After the output voltage of the power supply is pulled down, if the output voltage is smaller than the voltage value required by the normal work of the actual load, the fact that the actual load cannot be driven to work normally at the moment that the power supply suddenly changes from no load or light load to heavy load is indicated, namely the power supply fails to pass the test. If the output voltage is not less than the voltage value required by the normal work of the actual load, the power supply can drive the normal work of the actual load, namely the power supply passes the test.
The scheme provided by the disclosure tests the transient voltage output by the power supply by simulating the moment of the change of the working state of the actual load, and can conveniently and quickly determine whether the transient voltage output by the power supply can ensure the normal work of the actual load.
In one embodiment, after outputting the information indicating that the power supply passes the test, the method further comprises:
When the measured voltage value belongs to a first value interval, outputting the output power of the power supply at the moment of switch closing;
the minimum value of the first value interval is not less than a voltage value required by normal work of the actual load, and the length of the first value interval is a first preset value.
under the condition that the power supply passes the test, if the measured voltage value belongs to the first value interval, the transient voltage output by the power supply is equal to or larger than or close to the voltage value required by the normal work of the actual load, the output power of the power supply is the maximum transient power which can be output on the premise of ensuring the normal work of the actual load, and the transient power value represents the maximum transient load carrying capacity of the power supply.
In one embodiment, further comprising: and when the measured voltage value is larger than the maximum value of the first value interval, reducing the resistance value of the adjustable load and re-measuring the minimum value of the output voltage of the power supply at the moment of switch closing until the measured voltage value falls into the first value interval.
The measured voltage value is larger than the maximum value of the first value interval, which indicates that the transient voltage output by the power supply meets the voltage value required by the normal work of the actual load and a certain margin exists. At this moment, the resistance value of the adjustable load is reduced, the transient voltage output by the power supply is further reduced until the transient voltage falls into the first value interval, the transient power output by the power supply is the maximum transient power which can be output on the premise of ensuring the normal work of the actual load, and the transient power value represents the maximum transient load carrying capacity of the power supply.
In one embodiment, after the switch is closed, the resistance of the adjustable load is decreased and the output voltage of the power supply is measured;
When the measured voltage value belongs to the second value interval, outputting the current output power of the power supply; the minimum value of the second value interval is not less than the voltage value required by the normal work of the actual load, and the length of the second value interval is a second preset value.
After the switch is closed, the load is stable, and the output voltage and current of the power supply enter a stable state. And at the moment, the resistance value of the adjustable load is reduced to enable the output voltage of the power supply to be pulled down, when the output voltage belongs to a second value interval, the output voltage of the power supply is equal to or larger than and close to a voltage value required by normal work of the actual load, the output power of the power supply is the maximum steady-state power which can be output on the premise of ensuring normal work of the actual load, and the steady-state power value represents the maximum steady-state load carrying capacity of the power supply.
in one embodiment, the information indicative of the power source passing the test comprises:
The current measured voltage value, the set value of the adjustable load and the resistance value of the actual load.
The larger the current measured voltage value is, the stronger the transient loading capacity of the power supply is. The larger the difference between the set value of the adjustable load and the resistance value of the actual load is, the stronger the transient load carrying capacity of the power supply is. The parameters are output, so that a tester can know the transient load capacity of the power supply conveniently.
According to a second aspect of embodiments of the present disclosure, a test apparatus for providing a power supply includes: the device comprises a connecting module, an adjustable load, a switch, a load adjusting module, an oscilloscope, a control module and an output module;
The connecting module is used for connecting the power supply with the adjustable load through the switch;
The load adjusting module is used for setting the resistance value of the adjustable load according to the resistance value of the actual load, and the resistance value of the adjustable load does not exceed the resistance value of the actual load;
the oscilloscope is used for measuring the minimum value of the output voltage of the power supply at the moment of closing the switch;
When the control module determines that the voltage value measured by the oscilloscope is not less than the voltage value required by the normal work of the actual load, the output module outputs the indication information that the power supply passes the test.
In one embodiment, when the control module determines that the voltage value measured by the oscilloscope belongs to a first value interval, the output module outputs the output power of the power supply at the moment when the switch is closed;
The minimum value of the first value interval is not less than a voltage value required by normal work of the actual load, and the length of the first value interval is a first preset value.
in one embodiment, when the control module determines that the voltage value measured by the oscilloscope is greater than the maximum value of the first value interval,
and the load adjusting module reduces the resistance value of the adjustable load, and the oscilloscope measures the minimum value of the output voltage of the power supply at the moment of closing the switch again until the control module determines that the voltage value measured by the oscilloscope falls into the first value range.
In one embodiment, the load adjusting module is used for reducing the resistance value of the adjustable load after the switch is closed;
The oscilloscope is used for measuring the output voltage of the power supply after the switch is closed;
When the control module determines that the voltage value measured by the oscilloscope belongs to a second value range, outputting the current output power of the power supply through the output module; the minimum value of the second value interval is not less than the voltage value required by the normal work of the actual load, and the length of the second value interval is a second preset value.
In one embodiment, the outputting, by the control module, the indication that the power passes the test through the output module includes: the current measured voltage value, the set value of the adjustable load and the resistance value of the actual load.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
FIG. 1 is a schematic diagram illustrating a testing principle shown according to an exemplary application scenario.
FIG. 2 is a flow chart illustrating a method of testing a power supply in accordance with an exemplary embodiment.
FIG. 3 is a block diagram of an electronic device shown in accordance with an example embodiment.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
Loads such as WIFI or LED drive and the like, wherein the working state is that the load is periodically suddenly changed from no load or light load to heavy load, and the current has a very large peak when the load is suddenly changed, so that the transient load capacity of the power supply is tested very severely, and the power supply is required to have very rapid dynamic response capacity. Therefore, a test method is needed to quickly evaluate the output voltage fluctuation of the power supply when the load is suddenly changed periodically. If the voltage after the voltage drop is higher than the voltage required by the load during normal operation, it can be shown that the transient voltage output by the power supply can ensure the load to operate normally.
fig. 1 is a schematic diagram illustrating the testing principle, in which the positive pole of a power supply 101 is connected to the positive pole of an adjustable electronic load 103 through a switch 102, the negative pole of the power supply 101 is connected to the negative pole of the adjustable electronic load 103, and fig. 1 shows the case where the negative pole is grounded. When the switch 102 is closed, the adjustable electronic load 103 is connected to the power supply 101, and the current between the power supply 101 and the electronic load spikes, and the output voltage of the power supply 101 is pulled low. A test point is arranged between the power supply 101 and the switch 102 and is connected with the anode of a probe of the oscilloscope 104, the cathode of the probe of the oscilloscope 104 is connected with the cathode of the power supply 101, and the oscilloscope 104 measures the output voltage of the power supply 101.
FIG. 2 is a flowchart illustrating a method for testing a power supply according to an exemplary embodiment, the method being applied to a testing device of the power supply, including steps 201 and 206:
In step 201, a power source is connected to an adjustable load through a switch.
The power supply is a direct current output power supply, such as an AC-DC power supply module or a DC-DC power supply module. The adjustable load may be a variable resistor and the switch may be a mechanical switch such as a relay or an electronic switch such as a MOS switch. In one embodiment, the switch is a time relay. After the on-off period of the time relay is set, the adjustable load is periodically switched on and off to simulate the process of continuously changing the no-load and heavy-load states.
in step 202, the resistance value of the adjustable load is set according to the resistance value of the actual load, and the resistance value of the adjustable load does not exceed the resistance value of the actual load.
the actual load refers to loads with power possibly changing suddenly, such as WIFI and LED driving, the resistance value of the actual load can be manually input into the testing equipment of the power supply by a user, and then the testing equipment of the power supply sets the resistance value of the adjustable load according to the input value, so that the resistance value of the adjustable load is not more than the resistance value of the actual load, and the resistance value is set to be 100% or 95% of the resistance value of the actual load, for example.
in the subsequent step, if the resistance of the adjustable load needs to be reset, the resistance of the adjustable load can be further reduced according to a preset step length, for example, the resistance is reduced by 5% each time the adjustable load is reset.
In step 203, the minimum value of the output voltage of the power supply at the instant the switch is closed is measured.
In one embodiment, a test point is arranged between a power supply and a switch, the anode of a probe of the oscilloscope is connected, and the cathode of the probe of the oscilloscope is connected with the cathode of the power supply. And setting a trigger level of a falling edge of the oscilloscope, and when the output voltage of the power supply is pulled down to be lower than the trigger level, capturing the transient voltage waveform of the power supply by the oscilloscope, wherein the lowest point voltage of the waveform is the minimum value of the output voltage of the power supply at the moment of closing a switch, namely the minimum value of the transient voltage and is expressed by Vm.
in step 204, when the measured voltage value is not less than the voltage value required when the actual load works normally, the indication that the power supply passes the test is output.
The voltage value required by the load in normal operation is represented by Ve, Vm is larger than or equal to Ve, the output voltage of the power supply can still ensure the normal operation of the actual load after the output voltage of the power supply is pulled down, and at the moment, the indication information that the power supply passes the test is output.
If Vm is less than Ve, it indicates that the output voltage of the power supply is pulled low and cannot ensure normal operation of the actual load, or the power supply cannot drive the actual load to normally operate at the moment of sudden change from no-load or light-load to heavy-load, which indicates that the power supply fails the test, and at this time, the indication information that the power supply fails the test can be output.
In one embodiment, the information indicating that the power supply passes the test includes the currently measured Vm value, the set value of the adjustable load, and the resistance value of the actual load.
the larger the Vm value is, the stronger the transient load capacity of the power supply is. The larger the difference between the set value of the adjustable load and the resistance value of the actual load is, the stronger the transient load carrying capacity of the power supply is. The parameters are output, so that a tester can know the transient load capacity of the power supply conveniently. The indication that the power supply failed the test may also include the parameters described above.
according to the testing method of the power supply, the adjustable load is used for simulating actual loads such as WIFI and LED driving, the power supply and the adjustable load are connected at the moment of closing the switch, and the power supply is instantly converted into a heavy-load state from a no-load state. The minimum value of the transient voltage of the power supply represents the transient loading capacity of the power supply, and the larger the value is, the stronger the transient loading capacity is. The value is not less than the voltage value required by the normal work of the actual load, which indicates that the output voltage of the power supply can still ensure the normal work of the actual load after being pulled down, namely the power supply passes the test. The scheme provided by the disclosure tests the transient voltage output by the power supply by simulating the moment of the change of the working state of the actual load, and can conveniently and quickly determine whether the transient voltage output by the power supply can ensure the normal work of the actual load.
Subsequent optional steps, including step 205 and step 206, may continue to be performed after the power supply is determined to pass the test.
In step 205, the maximum transient power output by the power supply is measured and output.
the maximum transient power output by the power supply refers to the maximum transient power which can be output by the power supply at the moment when the switch is closed on the premise that Vm is guaranteed to be larger than or equal to Ve.
In one embodiment, a value interval, referred to as a first value interval, is set, denoted as [ a, b ]. The minimum value of the first value interval is not less than the voltage value required by the normal work of the actual load, namely a is more than or equal to Ve. The length (b-a) of the first value interval is a first preset value.
If Vm e [ a, b ], then it means that Vm is equal to or greater than and close to Ve, the proximity depending on the value of the interval length (b-a), the smaller the value, the more Vm e [ a, b ] means that Vm is close to Ve.
When Vm belongs to [ a, b ], the output power Vm2/R (R is the resistance value of the adjustable load) of the power supply is the maximum transient power which can be output by the power supply on the premise of ensuring that the actual load works normally (Vm is more than or equal to Ve), and the transient power value represents the maximum transient load carrying capacity of the power supply. And when Vm belongs to the [ a, b ], the test equipment of the power supply outputs the value of Vm2/R, so that a tester can know the transient load capacity of the power supply conveniently.
after step 204, if Vm > b, it means that Vm satisfies the voltage value required by the actual load when the load works normally and a certain margin exists. At this time, the resistance value of the adjustable load is gradually reduced according to the step length of the preset value, and the value of Vm is gradually reduced. And re-measuring Vm when the resistance value of the adjustable load is reduced each time until the value of Vm falls into [ a, b ], wherein the value of Vm2/R output by the testing equipment of the power supply is the maximum transient power output by the power supply.
in step 206, the maximum steady state power output by the power supply is measured and output.
After the switch is closed, the transient response process of the power supply is finished, the steady-state output process is entered, and the output voltage and the load power of the power supply are kept stable. If the resistance of the adjustable load is continuously reduced, the output power of the power supply is continuously increased, and the steady-state voltage of the power supply can be pulled down.
the steady-state voltage of the power supply is recorded as Vs, and the maximum steady-state power output by the power supply refers to the maximum power which can be output by the power supply in the steady-state output process after the switch is closed on the premise that the Vs is larger than or equal to Ve.
In one embodiment, a value interval, referred to as a second value interval, is set, denoted as [ c, d ]. The minimum value of the second value interval is not less than the voltage value required by the normal work of the actual load, namely c is more than or equal to Ve. The length (d-c) of the second value interval is a second preset value.
the second value interval and the first value interval may be the same interval, or may be two different intervals, and the start point and the end point of the two intervals are independent from each other and have no association with each other.
If Vs e [ c, d ], then it means that Vm is equal to or greater than and close to Ve, the degree of proximity depending on the value of the interval length (d-c), the smaller the value, the more closely Vs e [ c, d ] means that Vs is close to Ve.
And when Vs belongs to the field of c and d, the output power Vs2/R (R is the resistance value of the adjustable load) of the power supply is the maximum steady-state power which can be output by the power supply on the premise of ensuring that the actual load works normally (Vs is more than or equal to Ve), and the steady-state power value represents the maximum steady-state load carrying capacity of the power supply. And the test equipment of the power supply outputs a value Vs2/R when Vs epsilon [ c, d ], so that a tester can know the steady-state loading capacity of the power supply conveniently.
After the switch is closed and the power supply enters a steady-state output process, if Vs is larger than d, it is indicated that Vs meets a voltage value required by normal operation of an actual load and a certain margin exists. At this time, the resistance value of the adjustable load is gradually reduced according to the step length of the preset value, and the value of Vs is gradually reduced. And re-measuring the Vs each time the resistance value of the adjustable load is reduced until the value of the Vs falls into [ c, d ], wherein the value of the Vs2/R output by the testing equipment of the power supply is the maximum steady-state power output by the power supply.
According to the testing method of the power supply, the transient voltage of the power supply at the moment when the testing switch is switched on is tested, and when the transient voltage is not less than the voltage required by normal work of an actual load, the power supply is determined to pass the test. The maximum transient power and the maximum steady-state power output by the power supply are further tested under the condition that the power supply passes the test, so that testers can conveniently and quickly evaluate the transient load capacity and the steady-state load capacity of the power supply.
The following are embodiments of the disclosed apparatus that may be used to perform embodiments of the disclosed methods.
Fig. 3 is a block diagram of an electronic device according to an exemplary embodiment, which may implement part or all of its functions through software, hardware, or a combination of both, for performing the method for testing a power supply described in the corresponding embodiment of fig. 2. As shown in fig. 3, the electronic device 30 includes:
a connection module 301, an adjustable load 302, a switch 303, a load adjustment module 304, an oscilloscope 305, a control module 306 and an output module 307;
a connection module 301, configured to connect a power supply to an adjustable load 302 through a switch 303;
The load adjusting module 304 is configured to set a resistance value of the adjustable load 302 according to the resistance value of the actual load, where the resistance value of the adjustable load 302 does not exceed the resistance value of the actual load;
An oscilloscope 305 for measuring the minimum value of the output voltage of the power supply at the instant when the switch 303 is closed;
when the control module 306 determines that the voltage value measured by the oscilloscope 305 is not less than the voltage value required when the actual load works normally, the output module 307 outputs the indication that the power supply passes the test.
in one embodiment, when the control module 306 determines that the voltage value measured by the oscilloscope 305 belongs to the first value range, the output module 307 outputs the output power of the power supply at the instant when the switch 303 is closed;
The minimum value of the first value interval is not less than a voltage value required by normal work of the actual load, and the length of the first value interval is a first preset value.
in one embodiment, when the control module 306 determines that the voltage value measured by the oscilloscope 305 is greater than the maximum value of the first span,
The load adjusting module 304 decreases the resistance of the adjustable load 302, and the oscilloscope 305 re-measures the minimum value of the output voltage of the power supply at the instant when the switch 303 is closed until the control module 306 determines that the voltage value measured by the oscilloscope 305 falls within the first value range.
In one embodiment, the load adjusting module 304 is configured to decrease the resistance of the adjustable load 302 after the switch 303 is closed;
An oscilloscope 305 for measuring the output voltage of the power supply after the switch 303 is closed;
When the control module 306 determines that the voltage value measured by the oscilloscope 305 belongs to the second value range, the current output power of the power supply is output through the output module 307.
In one embodiment, the control module 306 outputting the indication that the power source passes the test through the output module 307 includes: the current measured voltage value, the set point of the adjustable load 302, and the actual load resistance value.
According to the testing method of the power supply, the transient voltage of the power supply at the moment when the testing switch is switched on is tested, and when the transient voltage is not less than the voltage required by normal work of an actual load, the power supply is determined to pass the test. The maximum transient power and the maximum steady-state power output by the power supply are further tested under the condition that the power supply passes the test, so that testers can conveniently and quickly evaluate the transient load capacity and the steady-state load capacity of the power supply.
other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (8)
1. a method of testing a power supply, comprising:
Connecting a power supply with an adjustable load through a switch;
setting the resistance value of the adjustable load according to the resistance value of the actual load, wherein the resistance value of the adjustable load does not exceed the resistance value of the actual load;
measuring a minimum value of an output voltage of the power supply at a moment of closure of the switch;
when the measured voltage value is not less than the voltage value required by the normal work of the actual load, outputting indication information that the power supply passes the test;
When the measured voltage value is larger than the maximum value of a first value range, reducing the resistance value of the adjustable load and re-measuring the minimum value of the output voltage of the power supply at the moment of closing the switch until the measured voltage value falls into the first value range; the minimum value of the first value interval is not less than the voltage value required by the actual load during normal work, and the length of the first value interval is a first preset value.
2. The method of claim 1, wherein after outputting the indication that the power supply passes the test, further comprising:
and when the measured voltage value belongs to the first value interval, outputting the output power of the power supply at the moment when the switch is closed.
3. The method of claim 1, further comprising:
After the switch is closed, reducing the resistance value of the adjustable load and measuring the output voltage of the power supply;
When the measured voltage value belongs to a second value interval, outputting the current output power of the power supply; and the minimum value of the second value interval is not less than the voltage value required by the normal work of the actual load, and the length of the second value interval is a second preset value.
4. the method of claim 1, wherein the information indicative of the power source passing the test comprises:
A current measured voltage value, a set value of the adjustable load and a resistance value of the actual load.
5. a test apparatus for a power supply, comprising: the device comprises a connecting module, an adjustable load, a switch, a load adjusting module, an oscilloscope, a control module and an output module;
the connecting module is used for connecting a power supply with the adjustable load through the switch;
the load adjusting module is used for setting the resistance value of the adjustable load according to the resistance value of the actual load, and the resistance value of the adjustable load does not exceed the resistance value of the actual load;
the oscilloscope is used for measuring the minimum value of the output voltage of the power supply at the moment when the switch is closed;
when the control module determines that the voltage value measured by the oscilloscope is not less than the voltage value required by the actual load in normal operation, the output module outputs the indication information that the power supply passes the test;
When the control module determines that the voltage value measured by the oscilloscope is larger than the maximum value of a first value range, the load adjusting module reduces the resistance value of the adjustable load, and the oscilloscope measures the minimum value of the output voltage of the power supply at the moment of closing of the switch again until the control module determines that the voltage value measured by the oscilloscope falls into the first value range; the minimum value of the first value interval is not less than the voltage value required by the actual load during normal work, and the length of the first value interval is a first preset value.
6. The apparatus of claim 5,
And when the control module determines that the voltage value measured by the oscilloscope belongs to a first value range, the output module outputs the output power of the power supply at the moment when the switch is closed.
7. the apparatus of claim 5,
the load adjusting module is used for reducing the resistance value of the adjustable load after the switch is closed;
The oscilloscope is used for measuring the output voltage of the power supply after the switch is closed;
When the control module determines that the voltage value measured by the oscilloscope belongs to a second value range, outputting the current output power of the power supply through the output module;
and the minimum value of the second value interval is not less than the voltage value required by the normal work of the actual load, and the length of the second value interval is a second preset value.
8. The apparatus of claim 5,
The control module outputs the indication information that the power supply passes the test through the output module, and the indication information comprises: a current measured voltage value, a set value of the adjustable load and a resistance value of the actual load.
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| CN112763787A (en) * | 2021-01-19 | 2021-05-07 | 天津市中环电子计算机有限公司 | Industrial computer voltage stability testing method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19739379C1 (en) * | 1997-09-09 | 1999-07-08 | Abb Research Ltd | Procedure for determining the load capacity of an AC network |
| US6476729B1 (en) * | 2000-08-22 | 2002-11-05 | Daniel Liu | Power monitoring module with display unit for electrical power source device |
| CN101452061A (en) * | 2007-11-30 | 2009-06-10 | 上海市电力公司 | UPS steady state test method |
| CN101452060A (en) * | 2007-11-30 | 2009-06-10 | 上海市电力公司 | UPS dynamic test method |
| CN102129046A (en) * | 2011-03-01 | 2011-07-20 | 艾默生网络能源有限公司 | Automatic test device for uninterrupted power supply |
| CN106526505A (en) * | 2016-10-14 | 2017-03-22 | 北京东方计量测试研究所 | Method and system for testing non-linear load capacity characteristic of alternating-current voltage-stabilized source |
-
2017
- 2017-07-21 CN CN201710602132.5A patent/CN107390140B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19739379C1 (en) * | 1997-09-09 | 1999-07-08 | Abb Research Ltd | Procedure for determining the load capacity of an AC network |
| US6476729B1 (en) * | 2000-08-22 | 2002-11-05 | Daniel Liu | Power monitoring module with display unit for electrical power source device |
| CN101452061A (en) * | 2007-11-30 | 2009-06-10 | 上海市电力公司 | UPS steady state test method |
| CN101452060A (en) * | 2007-11-30 | 2009-06-10 | 上海市电力公司 | UPS dynamic test method |
| CN102129046A (en) * | 2011-03-01 | 2011-07-20 | 艾默生网络能源有限公司 | Automatic test device for uninterrupted power supply |
| CN106526505A (en) * | 2016-10-14 | 2017-03-22 | 北京东方计量测试研究所 | Method and system for testing non-linear load capacity characteristic of alternating-current voltage-stabilized source |
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