CN210863851U - Alternating effect test system of alternating current loop - Google Patents
Alternating effect test system of alternating current loop Download PDFInfo
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- CN210863851U CN210863851U CN201921468662.6U CN201921468662U CN210863851U CN 210863851 U CN210863851 U CN 210863851U CN 201921468662 U CN201921468662 U CN 201921468662U CN 210863851 U CN210863851 U CN 210863851U
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Abstract
The application discloses alternating effect's of alternating current circuit test system, this test system includes: an alternating current loop for providing a loop current; the alternating induction device is coupled with the alternating current loop and used for performing electromagnetic induction with the alternating current loop to generate induction current; the first ammeter is coupled with the alternating current loop and used for detecting the loop current; a second ammeter coupled to the alternating induction device for detecting the induced current; and the MCU is connected with the first ammeter and the second ammeter and is used for storing and establishing the corresponding relation among the loop current, the induced current and the preset coil turns of the alternating induction device. This application utilizes the alternation induction system with alternating current loop coupling to cooperate the ampere meter to detect induced-current to the corresponding relation between loop current, alternation induction system's the coil turn of predetermineeing and the induced-current under the record storage need not artificial participation, can effectively improve treatment effeciency and rate of accuracy, and effectively use manpower sparingly cost.
Description
Technical Field
The application relates to the technical field of power detection, in particular to a test system for an alternating effect of an alternating current loop.
Background
Alternating current refers to current whose magnitude and direction change periodically with time. According to the principle of electromagnetic induction, a conductor placed in a changing magnetic flux generates an electromotive force, i.e., an induced electromotive force or an induced electromotive force, and when the conductor is closed into a loop, the electromotive force drives electrons to flow, so that an induced current or an induced current is formed. Therefore, electromagnetic induction tends to occur during the application of alternating current.
However, in practical use, the presence of the induced current may jeopardize the safe use of the device, and therefore, the related art personnel need to manage the electromagnetic induction phenomenon of the alternating current. According to the related principle, the magnitude of the induced current is related to the loop current in the ac loop and other factors, but as for the specific correlation coefficient, the application scenario is different, and those skilled in the art often obtain sample data for the actual situation currently applied through practical tests so as to grasp and utilize the situation of the alternating effect. However, the manual clamp meter method adopted in the prior art has the disadvantages of low efficiency, poor safety and high labor cost.
In view of the above, it is an important need for those skilled in the art to provide a solution to the above technical problems.
SUMMERY OF THE UTILITY MODEL
The application aims to provide a test system for the alternating effect of an alternating current loop, so that the test efficiency and the accuracy are effectively improved, and the labor cost is saved.
In order to solve the above technical problem, the present application discloses a system for testing an alternating effect of an ac loop, including:
an alternating current loop for providing a loop current;
the alternating induction device is coupled with the alternating current loop and used for performing electromagnetic induction with the alternating current loop to generate induction current;
a first ammeter coupled to the AC loop for detecting the loop current;
a second ammeter coupled to the alternating induction device for detecting the induced current;
and the MCU is connected with the first ammeter and the second ammeter and is used for storing and establishing the corresponding relation among the loop current, the induced current and the preset coil turns of the alternating induction device.
Optionally, an adjustable resistor for adjusting the loop current is connected in series in the ac loop.
Optionally, the adjustable resistance is a sliding varistor.
Optionally, the alternating induction device comprises an induction coil.
Optionally, the cross-section of the induction coil is parallel or perpendicular to the wires of the ac loop.
Optionally, the induction coil is provided with a turn number adjusting tap.
Optionally, the alternating induction device comprises a feedthrough transformer or an open-close transformer.
Optionally, a switch and a voltage regulator are connected in series in the ac loop.
The test system of alternating effect of alternating current return circuit that this application provided includes: an alternating current loop for providing a loop current; the alternating induction device is coupled with the alternating current loop and used for performing electromagnetic induction with the alternating current loop to generate induction current; a first ammeter coupled to the AC loop for detecting the loop current; a second ammeter coupled to the alternating induction device for detecting the induced current; and the MCU is connected with the first ammeter and the second ammeter and is used for storing and establishing the corresponding relation among the loop current, the induced current and the preset coil turns of the alternating induction device.
Therefore, the alternating induction device coupled with the alternating current loop is used for detecting the induced current in cooperation with the ammeter, and therefore the corresponding relation among the stored loop current, the preset coil turns of the alternating induction device and the induced current is recorded. According to the method and the device, human participation is not needed, the processing efficiency and the accuracy can be effectively improved, and the labor cost is effectively saved. The method for testing the alternating effect of the alternating current loop has the advantages.
Drawings
In order to more clearly illustrate the technical solutions in the prior art and the embodiments of the present application, the drawings that are needed to be used in the description of the prior art and the embodiments of the present application will be briefly described below. Of course, the following description of the drawings related to the embodiments of the present application is only a part of the embodiments of the present application, and it will be obvious to those skilled in the art that other drawings can be obtained from the provided drawings without any creative effort, and the obtained other drawings also belong to the protection scope of the present application.
FIG. 1 is a block diagram of a system for testing alternating effect of an AC loop according to an embodiment of the present disclosure;
fig. 2 is a circuit configuration diagram of a system for testing an alternating effect of an ac loop according to an embodiment of the present application.
Detailed Description
The core of the application lies in providing a test system of alternating effect of alternating current circuit to effectively improve efficiency of software testing and rate of accuracy, and save the human cost.
In order to more clearly and completely describe the technical solutions in the embodiments of the present application, the technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Currently, in actual use, the presence of induced current may jeopardize the safe use of the device, and therefore, the relevant technical personnel need to manage and control the electromagnetic induction phenomenon of the alternating current. According to the related principle, the magnitude of the induced current is related to the loop current in the ac loop and other factors, but as for the specific correlation coefficient, the application scenario is different, and those skilled in the art often obtain sample data for the actual situation currently applied through practical tests so as to grasp and utilize the situation of the alternating effect. However, the manual clamp meter method adopted in the prior art is not only low in efficiency, but also poor in safety and high in labor cost. In view of the above, the present application provides a system for testing the alternating effect of an ac loop, which can effectively solve the above problems.
Referring to fig. 1, an embodiment of the present application discloses a system for testing an alternating effect of an ac circuit 101, which mainly includes:
an alternating current loop 101 for providing a loop current I1;
an alternating current induction device 102 coupled to the alternating current loop 101 for electromagnetically inducing the alternating current loop 101 to generate an induction current I2;
a first ammeter 103 coupled to the ac loop 101 for detecting a loop current I1;
a second ammeter 104 coupled to the alternating current induction device 102 for detecting the induced current I2;
the MCU105 is connected to the first ammeter 103 and the second ammeter 104, and is configured to store and establish a corresponding relationship between the loop current I1, the induced current I2, and the preset number N of coil turns of the alternating current induction device 102.
Specifically, the system for testing the alternating effect of the ac loop 101 provided in the embodiment of the present application utilizes the alternating induction device 102 coupled to the ac loop 101 to generate the induced current I2 associated with the loop current I1, and further utilizes the related equipment to detect the magnitude of the induced current I2, so as to be used as sample data for those skilled in the art.
As before, the loop current I1 in the ac loop 101 is an ac signal, and the periodic variation of the current induces the variation of the magnetic flux in the alternating induction device 102, i.e. electromagnetic induction, and further generates the induction current I2 in the alternating induction device 102. It should be noted that the specific manner of coupling the alternating current induction device 102 and the alternating current loop 101 can be selected by those skilled in the art, so as to generate the electromagnetic induction phenomenon. For example, the wires of the ac loop 101 may specifically pass through a coil in the alternating induction device 102.
Specifically, the ac circuit 101 may specifically use a 50Hz industrial frequency ac power supply, and the voltage may specifically be 220V or 380V of the common commercial power.
In order to test the alternating effect of the loop current I1 in the ac loop 101, the embodiment of the present application is provided with a second ammeter 104 for detecting the magnitude of the induced current I2 generated by the electromagnetic induction. Since the magnitude of the sense current I2 has a direct relationship with the loop current I1 causing electromagnetic induction, the embodiment of the present application further provides the first ammeter 103 to detect the magnitude of the loop current I1, so as to establish a relationship between the loop current I1 and the sense current I2.
In addition, the magnitude of the induced current I2 is also related to relevant parameters of the alternating induction device 102, such as the number of turns and the type of the coil, and the material and thickness of the coil in different types are different. Therefore, for the coil of the type currently used, the number of coil turns may be preset in advance so as to establish the relationship between the preset number of coil turns N and the induced current I2. The preset number of turns N of the coil may be input to the MCU105 through a relevant input device in advance. Therefore, the corresponding relationship among the loop current I1, the preset number of turns N of the coil and the induced current I2 can be correspondingly established and stored in the MCU105, so as to obtain the test data of the alternating effect generated by the loop current I1.
Specifically, the first ammeter 103 and the second ammeter 104 are both connected to the MCU105, and both detection results can be sent to and stored in the MCU 105. It should be noted that, in the MCU105, the corresponding relationship between the loop current I1, the induced current I2 and the preset number N of coil turns may be stored in the MCU105 in a matrix form.
It should be added that, in order to further improve the data accuracy, multiple measurements may be performed under the same application scenario, and an average value of the multiple measurement results is taken and stored. For example, in the case that the amplitude of the loop current I1 is 1A and the frequency is 50Hz, and the preset number N of turns of the known type of induction coil in the alternating induction device 102 is 10 turns, the magnitude of the induction current I2 generated in the induction coil may be measured for several times, for example, 3 times, and the average value of the 3 measurement results is stored as a value corresponding to the actual application scenario.
In order to enrich the test results, those skilled in the art can utilize the test system provided in the present application to respectively test the ac loops 101 with different loop currents I1 and different preset coil turns N, so as to obtain a large number of test results sufficient to meet the requirements.
The test system for the alternating effect of the alternating current loop 101 provided by the embodiment of the application comprises: an alternating current loop 101 for providing a loop current I1; an alternating current induction device 102 coupled to the alternating current loop 101 for electromagnetically inducing the alternating current loop 101 to generate an induction current I2; a first ammeter 103 coupled to the ac loop 101 for detecting a loop current I1; a second ammeter 104 coupled to the alternating current induction device 102 for detecting the induced current I2; the MCU105 is connected to the first ammeter 103 and the second ammeter 104, and is configured to store and establish a corresponding relationship between the loop current I1, the induced current I2, and the preset number N of coil turns of the alternating current induction device 102.
It can be seen that, in the system for testing the alternating effect of the ac loop 101 disclosed in the embodiment of the present application, the alternating induction device 102 coupled to the ac loop 101 is used in cooperation with the ammeter to detect the induced current I2, so as to record and store the corresponding relationship between the loop current I1, the preset number of turns N of the alternating induction device 102, and the induced current I2. According to the method and the device, human participation is not needed, the processing efficiency and the accuracy can be effectively improved, and the labor cost is effectively saved.
Based on the above, in the system for testing the alternating effect of the ac loop 101 disclosed in the embodiment of the present application, in a specific embodiment, the adjustable resistor 106 for adjusting the loop current I1 is connected in series in the ac loop 101.
Specifically, by adjusting the resistance value of the adjustable resistor 106 connected in series in the ac loop 101, the loop current I1 in the ac loop 101 can be adjusted, so as to enrich the test result under different loop currents I1.
Further, as an embodiment, the adjustable resistor 106 is a sliding rheostat. Of course, those skilled in the art may also select a potentiometer or the like as the adjustable resistor 106.
Based on the above, in the system for testing the alternating effect of the ac loop 101 disclosed in the embodiment of the present application, in a specific embodiment, the alternating current induction device 102 is an induction coil.
In the present embodiment, as the alternating current induction device 102 having the simplest structure, an induction coil may be directly used as the alternating current induction device 102.
Wherein further the cross section of the induction coil is parallel or perpendicular to the wires of the ac loop 101. Wherein it is recommended, but not limited, to make the cross section of the induction coil parallel to the wires of the ac loop 101.
Based on the above, in the system for testing the alternating effect of the ac loop 101 disclosed in the embodiment of the present application, in a specific embodiment, the induction coil is provided with the turn number adjusting tap 107.
In this embodiment, the tap 107 is adjusted by using the number of turns, so that the number of turns N of the preset coil of the induction coil can be adjusted more conveniently, and further, the test data under the condition of different numbers of turns N of the preset coil is enriched.
Based on the above, in the system for testing the alternating effect of the ac loop 101 disclosed in the embodiment of the present application, in a specific embodiment, the alternating current induction device 102 is a feedthrough transformer or an open-close transformer.
Specifically, a feedthrough transformer may also be used as the alternating current induction device 102. The feed-through transformer comprises an induction coil and a core, and the electromagnetic induction intensity is enhanced due to the core, so that the induction coil has a larger induction current I2 and a faster response speed than the induction coil is used only.
An open-close type feed-through transformer may also be used as the alternating current induction device 102. Compared with the common feedthrough mutual inductor, the open-close feedthrough mutual inductor can conveniently open and close the coil, thereby being convenient for installation and disassembly and being more suitable for field use.
Based on the above, in the system for testing the alternating effect of the ac circuit 101 disclosed in the embodiment of the present application, in a specific implementation manner, the switch 108 and the voltage regulator 109 are connected in series in the ac circuit 101.
Specifically, in order to further control the test of the alternating effect, the switch 108 may be connected in series in the ac loop 101 for switching control.
The system for testing the alternating effect disclosed in the present application will be described with reference to a specific embodiment. Referring to fig. 2, fig. 2 is a circuit structure diagram of a system for testing an alternating effect of an ac loop 101 according to an embodiment of the present application.
As shown in fig. 2, the wires of the alternating circuit pass through the coil of the alternating induction device 102, and an induced current is formed in the induction coil of the alternating induction device 102. The alternating current induction device 102 shown in fig. 2 is specifically a feedthrough transformer, and includes an iron core and an induction coil. The first ammeter 103 is connected to the ac loop 101 to be coupled to the ac loop 101 to detect the loop current. The second current meter 104 is connected to the induction coil of the alternating induction device 102 so as to be coupled to the alternating induction device 102 to detect an induced current. Meanwhile, an adjustable resistor 106 and a voltage regulator 109 are connected in series in the alternating current loop 101 so as to adjust the loop current; a turn number adjusting tap 107 is arranged in the alternating induction device 102 and used for adjusting the number of turns of a preset coil; a switch 108 for controlling the closing of the line is also connected in series in the ac circuit 101.
In one embodiment, please refer to table 1, wherein table 1 shows a part of the test results of the alternating effect test system provided in the present application.
TABLE 1
The embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. For the equipment disclosed by the embodiment, the description is relatively simple because the equipment corresponds to the method disclosed by the embodiment, and the relevant parts can be referred to the method part for description.
It is further noted that, throughout this document, relational terms such as "first" and "second" are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Furthermore, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The technical solutions provided by the present application are described in detail above. The principles and embodiments of the present application are explained herein using specific examples, which are provided only to help understand the method and the core idea of the present application. It should be noted that, for those skilled in the art, without departing from the principle of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall into the protection scope of the present application.
Claims (8)
1. A system for testing the alternating effect of an ac circuit, comprising:
an alternating current loop for providing a loop current;
the alternating induction device is coupled with the alternating current loop and used for performing electromagnetic induction with the alternating current loop to generate induction current;
a first ammeter coupled to the AC loop for detecting the loop current;
a second ammeter coupled to the alternating induction device for detecting the induced current;
and the MCU is connected with the first ammeter and the second ammeter and is used for storing and establishing the corresponding relation among the loop current, the induced current and the preset coil turns of the alternating induction device.
2. The test system of claim 1, wherein an adjustable resistor is coupled in series with the ac loop for adjusting the loop current.
3. The test system of claim 2, wherein the adjustable resistance is a sliding varistor.
4. The test system of claim 1, wherein the alternating induction device comprises an induction coil.
5. The test system of claim 4, wherein a cross-section of the induction coil is parallel or perpendicular to a wire of the AC loop.
6. The test system of claim 4, wherein the induction coil is provided with a turn number adjustment tap.
7. The test system of claim 1, wherein the alternating induction device comprises a feedthrough transformer or an open-close transformer.
8. The test system of any one of claims 1 to 7, wherein a switch and a voltage regulator are connected in series in the AC loop.
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| CN201921468662.6U CN210863851U (en) | 2019-09-04 | 2019-09-04 | Alternating effect test system of alternating current loop |
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| CN201921468662.6U CN210863851U (en) | 2019-09-04 | 2019-09-04 | Alternating effect test system of alternating current loop |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110412329A (en) * | 2019-09-04 | 2019-11-05 | 广东电网有限责任公司 | A kind of test macro and method of the alternation effect of ac circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110412329A (en) * | 2019-09-04 | 2019-11-05 | 广东电网有限责任公司 | A kind of test macro and method of the alternation effect of ac circuit |
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