CN112904160A - Synchronous testing method for high-voltage machine, synchronous high-voltage machine and synchronous high-voltage machine working group - Google Patents
Synchronous testing method for high-voltage machine, synchronous high-voltage machine and synchronous high-voltage machine working group Download PDFInfo
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- 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
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
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Abstract
The application belongs to the technical field of high-voltage machines, and particularly relates to a high-voltage machine synchronous testing method, a synchronous high-voltage machine and a synchronous high-voltage machine working group. The high-voltage machine synchronous testing method establishes signal synchronization among a plurality of high-voltage machines through a unit starting step, a synchronous calling step and a synchronous testing step. And the synchronous high-voltage machine working group adopt a high-voltage machine synchronous testing method to carry out voltage withstanding testing. According to the synchronous testing method of the high-voltage machine, the synchronous high-voltage machine and the synchronous high-voltage machine working group, the asynchronous pressure difference formed among products, equipment or between the products and the equipment can be avoided by carrying out synchronous engagement before the test is started, and potential safety hazards caused by the asynchronous pressure difference are eliminated; meanwhile, an asynchronous superposition electromagnetic field can be prevented from being formed between devices, the influence of the asynchronous superposition electromagnetic field on the test precision is eliminated, and the method has the technical advantages of high precision, strong applicability, good safety performance and the like.
Description
Technical Field
The application belongs to the technical field of high-voltage machines, and particularly relates to a high-voltage machine synchronous testing method, a synchronous high-voltage machine and a synchronous high-voltage machine working group.
Background
The high voltage machine is a special device for completing the voltage withstanding test of electronic products such as batteries, mobile phones and the like. In some application scenarios that a plurality of high-voltage machines are required to complete product testing, for example, on a voltage withstanding test line, each high-voltage machine independently performs voltage withstanding test, high-voltage signals generated by the plurality of high-voltage machines cannot be synchronized, and two technical problems can be generated:
1. high-voltage signals in the high-voltage machine working group are asynchronous, large asynchronous pressure difference can be generated among products, equipment or between the products and the equipment, and potential safety hazards are brought. Taking a sine wave test voltage as an example, if one high-voltage machine is outputting a peak voltage of +1000V and the other high-voltage machine is outputting a valley voltage of-1000V, an asynchronous differential pressure of 2000V exists between the two high-voltage machines and between products under test, and such a large differential pressure is a potential safety hazard for products, equipment and test personnel.
2. When the output voltages of the high-voltage machines are synchronized, the electromagnetic fields generated between the high-voltage machines can cancel each other out (see fig. 3). When the output voltages of the high-voltage machines are asynchronous, the electromagnetic fields generated between the high-voltage machines cannot be completely offset, asynchronous superposed electromagnetic fields can be formed, and further the signal precision and the test precision of the high-voltage machines are affected.
No one has found and presented a solution to the above technical problem.
Disclosure of Invention
In view of this, the present application provides a synchronous testing method for a high-voltage machine, a synchronous high-voltage machine and a synchronous high-voltage machine working group, so as to solve the technical problems in the prior art.
The high-voltage machine synchronous testing method provided for solving the technical problem comprises the following steps:
a synchronous test method of a high-pressure machine is applied to eliminating electromagnetic interference and asynchronous pressure difference in a high-pressure machine working group, the high-pressure machine working group at least comprises two high-pressure machines, and the synchronous test method is characterized by comprising the following test steps:
a unit starting step, namely starting a high-pressure machine working group;
a synchronous calling step, wherein one high-voltage machine in the high-voltage machine working group is used as a calling high-voltage machine to send a synchronous appointment signal to other high-voltage machines in the high-voltage machine working group to appoint the starting time of a synchronous voltage withstanding test;
and a synchronous test step, namely synchronously carrying out voltage withstanding test on the calling high-voltage machine and all other high-voltage machines receiving the synchronous contract signal from the contract starting time.
Preferably, the starting of the high-pressure machine working group is completed by adopting the following method in the unit starting step:
a step of starting a calling high-voltage machine, wherein any one high-voltage machine in the work of the high-voltage machine is started to serve as the calling high-voltage machine;
and a subordinate high-voltage machine starting step, wherein the calling high-voltage machine sends a starting instruction to other high-voltage machines in the high-voltage machine working group, and the other high-voltage machines in the high-voltage machine working group start to start after receiving the starting instruction.
Preferably, the synchronization contract signal further includes test parameters. Further preferably, the test parameters include signal period, signal frequency, signal duty cycle and signal pulse width.
Preferably, the signal waveforms of all the high-voltage machines in the high-voltage machine working group coincide with each other.
Preferably, each high-voltage machine in the high-voltage machine working group is connected through a bus to realize a communication function.
Preferably, the synchronous calling step adopts the high-voltage machine started by the first high-voltage machine in the high-voltage machine working group as the calling high-voltage machine.
The synchronous high-pressure machine that this application provided for solving its technical problem does:
a synchronous high-voltage machine is characterized in that: the synchronous high-voltage machine adopts the high-voltage machine synchronous testing method recorded in any one of the technical schemes to carry out voltage withstanding test.
The synchronous high-voltage machine working group provided for solving the technical problem comprises the following steps:
the utility model provides a synchronous high-pressure machine working group, includes two at least high-pressure machines, its characterized in that: the synchronous high-voltage machine working group adopts the high-voltage machine synchronous testing method recorded in any one of the technical schemes to carry out voltage withstanding testing.
Preferably, the high-voltage machines in the synchronous high-voltage machine working group are connected through a bus to realize a communication function.
The beneficial technical effects are as follows:
according to the synchronous testing method of the high-voltage machine, the synchronous high-voltage machine and the synchronous high-voltage machine working group, the testing signals of all high-voltage machines in the high-voltage machine working group can be ensured to be completely consistent by synchronous engagement before the testing is started, so that large asynchronous pressure difference can be prevented from being formed among products, equipment or between the products and the equipment, and potential safety hazards caused by overlarge pressure difference are eliminated. Meanwhile, due to the fact that signals of the high-voltage machines are completely synchronous, asynchronous superposed electromagnetic fields can be prevented from being formed among the devices, the influence of the asynchronous superposed electromagnetic fields on the testing precision is prevented, and the high-voltage machine testing system has the technical advantages of being high in precision, strong in applicability, good in safety performance and the like.
The technical solutions and technical effects of the present application will be described in detail below with reference to the drawings and the detailed description of the present application.
Drawings
FIG. 1: an existing high-pressure machine workgroup example;
FIG. 2: testing a map of an existing high-pressure machine working group;
FIG. 3: an asynchronous superposed electromagnetic field structure schematic diagram;
FIG. 4: a flow step chart of a synchronous testing method;
FIG. 5: and testing the map of the synchronous high-pressure machine working group.
Detailed Description
Referring to fig. 1, in a working group including a plurality of high-voltage machines in the prior art, the operations of the high-voltage machines are independent from each other, and high-voltage test signals generated by each high-voltage machine cannot be completely synchronized, so that a test pattern as shown in fig. 2 is formed. Asynchronous high-voltage signals not only form asynchronous pressure differences among products, equipment or between the products and the equipment, but also generate asynchronous superposed electromagnetic fields in a working group of a high-voltage machine, thereby influencing the signal output and the test precision of the high-voltage machine and the safety of the products, the equipment and test personnel.
Referring to fig. 4, the synchronous testing method for high-voltage machines provided by the present application includes the following testing steps:
a unit starting step ST1, starting a high-pressure machine working unit;
a synchronous calling step ST2, wherein one high-voltage machine in the high-voltage machine working group is used as a calling high-voltage machine to send out a synchronous appointment signal to other high-voltage machines in the high-voltage machine working group to appoint the starting time of a synchronous voltage withstanding test;
in the synchronization test step ST3, the calling high-voltage machine and all other high-voltage machines receiving the synchronization contract signal perform a voltage withstanding test in synchronization from the start time of the contract.
Wherein:
all the high-voltage machines in the high-voltage machine working group are connected through a serial bus to realize a communication function;
in the unit starting step ST1, the high-pressure machine working unit is started by the following method:
a step of starting a calling high-voltage machine, in which any one high-voltage machine in the working of the high-voltage machine is started to serve as the calling high-voltage machine, for example, the high-voltage machine started by the first high-voltage machine in a high-voltage machine working group is adopted as the calling high-voltage machine;
and a slave high-voltage machine starting step, wherein after the calling high-voltage machine is started, the calling high-voltage machine sends a starting instruction to other high-voltage machines, and the other high-voltage machines start to be started after receiving the starting instruction.
In the synchronous calling step ST2, the synchronization contract signal m sent by the calling hypertension machine includes a start time T0, which is denoted as m (T0). in some embodiments, the synchronization contract signal m further includes test parameters, such as a signal period T, a signal frequency f, a signal duty ratio DR, a signal pulse width W, which are denoted as m (T0, T, f, DR, W).
In the synchronization test step ST3, the calling high-voltage machine and the slave high-voltage machine perform a voltage withstand test in synchronization from the appointed start time.
Fig. 5 is a test pattern of the synchronous test method of the present application, and it can be seen from fig. 5 that the signal patterns of the respective high-pressure machines are highly matched to form a synchronous test wave with almost identical pace. Because the signals between the high-voltage machines are highly synchronous, the electromagnetic fields generated by the high-voltage machines are completely offset, asynchronous superposed electromagnetic fields cannot be formed between the devices, and meanwhile, larger pressure difference cannot occur between products, between the high-voltage machines or between the products and the high-voltage machines because of asynchronous signals.
The synchronous testing method, the synchronous high-voltage machine and the synchronous high-voltage machine working group can perfectly eliminate the asynchronous superposition electromagnetic field formed in the high-voltage machine working group and the adverse effect of the asynchronous superposition electromagnetic field on the signal output and the testing precision of the high-voltage machine through a signal synchronization mechanism. Meanwhile, the asynchronous pressure difference formed among products, equipment or between the products and the equipment can be avoided, and potential safety hazards caused by the asynchronous pressure difference are eliminated.
While the technical solutions and technical effects of the present application have been described in detail with reference to the drawings and specific embodiments of the present application, it should be noted that the specific embodiments disclosed in the specification are only preferred embodiments of the present application, and other embodiments may be developed by those skilled in the art based on the specific embodiments; any simple modifications and equivalents which do not depart from the innovative concepts of the present application are intended to be included within the scope of the present patent.
Claims (10)
1. The high-pressure machine synchronous testing method is applied to a high-pressure machine working group to eliminate electromagnetic interference and asynchronous pressure difference, the high-pressure machine working group at least comprises two high-pressure machines, and the method is characterized by comprising the following testing steps:
a unit starting step, namely starting a high-pressure machine working group;
a synchronous calling step, wherein one high-voltage machine in the high-voltage machine working group is used as a calling high-voltage machine to send a synchronous appointment signal to other high-voltage machines in the high-voltage machine working group to appoint the starting time of a synchronous voltage withstanding test;
and a synchronous test step, namely synchronously carrying out voltage withstanding test on the calling high-voltage machine and all other high-voltage machines receiving the synchronous contract signal from the contract starting time.
2. The high-voltage machine synchronization test method according to claim 1, characterized in that:
the starting step of the machine set adopts the following method to complete the starting of the high-pressure machine working set:
a step of starting a calling high-voltage machine, wherein any one high-voltage machine in the work of the high-voltage machine is started to serve as the calling high-voltage machine;
and a subordinate high-voltage machine starting step, wherein the calling high-voltage machine sends a starting instruction to other high-voltage machines in the high-voltage machine working group, and the other high-voltage machines in the high-voltage machine working group start to start after receiving the starting instruction.
3. The high-voltage machine synchronization test method according to claim 1, characterized in that: the synchronization contract signal also includes test parameters.
4. The high-voltage machine synchronization test method according to claim 3, characterized in that: the test parameters include signal period, signal frequency, signal duty cycle, and signal pulse width.
5. The high-voltage machine synchronization test method according to claim 1, characterized in that: the signal waveforms of all the high-voltage machines in the high-voltage machine working group are overlapped with each other.
6. The high-voltage machine synchronization test method according to claim 1, characterized in that: and all the high-voltage machines in the high-voltage machine working group are connected through a bus to realize a communication function.
7. The high-voltage machine synchronization test method according to claim 1, characterized in that: in the synchronous calling step, a high-voltage machine started by the first high-voltage machine in the high-voltage machine working group is used as a calling high-voltage machine.
8. Synchronous high-pressure machine, its characterized in that: the synchronous high-voltage machine is subjected to a voltage withstanding test by adopting the high-voltage machine synchronous testing method as claimed in any one of claims 1 to 7.
9. Synchronous high-pressure machine work group, including two at least high-pressure machines, its characterized in that: the synchronous high-voltage machine working group adopts the high-voltage machine synchronous testing method of any one of claims 1 to 7 to carry out the voltage-withstanding test.
10. The synchronous high-voltage machine workgroup according to claim 9, characterized in that: and the high-voltage machines in the synchronous high-voltage machine working group are connected through a bus to realize a communication function.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110081394.8A CN112904160A (en) | 2021-01-21 | 2021-01-21 | Synchronous testing method for high-voltage machine, synchronous high-voltage machine and synchronous high-voltage machine working group |
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| CN103792470A (en) * | 2014-02-08 | 2014-05-14 | 上海沪工汽车电器有限公司 | Method and device for testing voltage withstanding capacity of car central cable connector |
| CN105190332A (en) * | 2013-02-08 | 2015-12-23 | B2电子有限公司 | Mobile high-voltage tester |
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2021
- 2021-01-21 CN CN202110081394.8A patent/CN112904160A/en active Pending
Patent Citations (7)
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| CN1904623A (en) * | 2005-07-25 | 2007-01-31 | 华东电力试验研究院 | Performance test method of synchronous phasor measuring device and test system |
| CN102135594A (en) * | 2011-01-30 | 2011-07-27 | 太原理工大学 | Insulation state monitoring device of high voltage motor for main fan used for mine |
| CN102368089A (en) * | 2011-11-17 | 2012-03-07 | 江苏省电力公司南京供电公司 | Test method of carrying out partial discharge measurement based on high-voltage cable voltage withstand test |
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