CN114236203A - Load control system, load control method, storage medium, and electronic device - Google Patents
Load control system, load control method, storage medium, and electronic device Download PDFInfo
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- CN114236203A CN114236203A CN202111437407.7A CN202111437407A CN114236203A CN 114236203 A CN114236203 A CN 114236203A CN 202111437407 A CN202111437407 A CN 202111437407A CN 114236203 A CN114236203 A CN 114236203A
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
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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
Abstract
The application discloses a load control system, a load control method, a storage medium and an electronic device. The system comprises: the arc signal detection circuit is used for detecting the arc signal value of the contactor of each load branch; a load supplement branch connected in parallel with the plurality of load branches; and the controller is connected with the arc signal detection circuit, and is used for closing the first switch of the target load branch when the arc signal value of the contactor is greater than a first threshold value after the test circuit receives the breaking signal of the contactor aiming at the target load branch, and is also used for opening the first switch of the target load branch when the arc signal value of the contactor is greater than a second threshold value after the test circuit receives the closing signal of the contactor aiming at the target load branch. Through the method and the device, the problem that in the process of testing equipment in the related art, the process of switching the load between different gears causes fluctuation of load parameters and influences a test result is solved.
Description
Technical Field
The application relates to the technical field of charging pile testing, in particular to a load control system, a load control method, a storage medium and an electronic device.
Background
In charging pile test, when simulating the power battery of the electric automobile, direct current resistance load is generally adopted for simulation, and in the test process, the load is required to be set to different working states and parameters according to different test items.
The dc resistive load generally adopts a stepping method, i.e. the dc resistive load is divided into a plurality of steps according to resistance and power. When a specific resistance or power is output, a mode of combining a plurality of gears is adopted. The method is low in cost and easy to implement. However, there are some defects, for example, when different gears are switched, one gear is often quitted and then other gears are put in, so that the load resistance or power fluctuates, or even oscillates, thereby affecting the tested device, and increasing the testing difficulty due to phase change.
Aiming at the problem that in the related art, in the process of testing equipment, the load is switched between different gears, so that the load parameters fluctuate and the test result is influenced, an effective solution is not provided at present.
Disclosure of Invention
The application provides a load control system, a load control method, a storage medium and an electronic device, which are used for solving the problem that in the related art, in the process of testing equipment, the load parameters fluctuate due to the process of switching the load among different gears, and the test result is influenced.
According to one aspect of the present application, a load control system is provided. The system comprises: the arc signal detection circuit is used for detecting the arc signal value of the contactor of each load branch, wherein each load branch is connected in parallel in the test loop; the load supplementing branch circuit is connected with the plurality of load branch circuits in parallel, wherein the load supplementing branch circuit comprises a supplementing load and a first switch; and the controller is connected with the arc signal detection circuit, and is used for closing the first switch of the target load branch when the arc signal value of the contactor is greater than a first threshold value after the test circuit receives the breaking signal of the contactor aiming at the target load branch, and is also used for opening the first switch of the target load branch when the arc signal value of the contactor is greater than a second threshold value after the test circuit receives the closing signal of the contactor aiming at the target load branch.
Optionally, the arc signal detection circuit comprises: the plurality of arc signal acquisition circuits are respectively used for acquiring arc signals between contacts of the contactors of each load branch; and the sampling circuit is connected with the arc signal acquisition circuit corresponding to the target load branch through the second switch and is used for sampling the arc signal of the contactor of the target load branch to obtain an arc signal value.
Optionally, the sampling circuit comprises: the first sampling circuit is used for sampling an arc signal of the contactor of the target load branch circuit to obtain an arc voltage value; and the second sampling circuit is used for sampling the arc signal of the contactor of the target load branch circuit to obtain the arc current value.
According to another aspect of the present application, a load control method is provided. The method comprises the following steps: under the condition that a test loop receives a breaking signal of a contactor aiming at a target load branch, acquiring an arc signal between contacts of the contactor; judging whether an arc signal value corresponding to the arc signal is greater than a first threshold value; and under the condition that the arc signal value is larger than a first threshold value, controlling a switch on a load supplement branch circuit to be closed so as to perform load compensation on the test loop, wherein the load supplement branch circuit is connected with the target load branch circuit in parallel.
Optionally, in a case where the test circuit receives an opening signal of the contactor for the target load branch, acquiring an arc signal between contacts of the contactor includes: under the condition that the test circuit receives a breaking signal of a contactor aiming at the target load branch, the sampling circuit is switched to an arc signal acquisition circuit corresponding to the target load branch; controlling an arc signal acquisition circuit to acquire arc signals between contacts of the contactor; and controlling the sampling circuit to sample the arc signal to obtain an arc signal value corresponding to the arc signal.
Optionally, the determining whether the arc signal value corresponding to the arc signal is greater than the first threshold includes: and acquiring an arc voltage value corresponding to the arc signal, and judging whether the arc voltage value is greater than a first voltage threshold value.
Optionally, in a case that the arc signal value is greater than the first threshold, controlling a switch on a load supplement branch to close to perform load compensation on the test loop, where after the load supplement branch is connected in parallel with the target load branch, the method further includes: under the condition that a test loop receives a closing signal of a contactor aiming at a target load branch, acquiring an arc signal between contacts of the contactor; judging whether an arc signal value corresponding to the arc signal is greater than a second threshold value; and controlling the switch on the load supplement branch circuit to be switched off under the condition that the arc signal value is greater than the second threshold value.
Optionally, the determining whether the arc signal value corresponding to the arc signal is greater than the second threshold includes: acquiring an arc voltage value corresponding to the arc signal, and judging whether the arc voltage value is greater than a second voltage threshold value; or acquiring an arc current value corresponding to the arc signal, and judging whether the arc current value is greater than a current threshold value.
According to another aspect of the embodiments of the present invention, there is also provided a non-volatile storage medium including a stored program, wherein the program controls a device in which the non-volatile storage medium is located to execute a load control method when running.
According to another aspect of the embodiments of the present invention, there is also provided an electronic device, including a processor and a memory; the memory has stored therein computer readable instructions, and the processor is configured to execute the computer readable instructions, wherein the computer readable instructions when executed perform a method of load control.
Through the application, the following steps are adopted: the arc signal detection circuit is used for detecting the arc signal value of the contactor of each load branch, wherein each load branch is connected in parallel in the test loop; the load supplementing branch circuit is connected with the plurality of load branch circuits in parallel, wherein the load supplementing branch circuit comprises a supplementing load and a first switch; the controller is connected with the arc signal detection circuit and used for closing the first switch of the target load branch when the arc signal value of the contactor of the target load branch is greater than a first threshold value after the test loop receives a breaking signal of the contactor of the target load branch, and is also used for opening the first switch of the target load branch when the arc signal value of the contactor of the target load branch is greater than a second threshold value after the test loop receives a closing signal of the contactor of the target load branch, so that the problem that in the related technology, in the process of testing equipment, the load parameter fluctuates in the process of switching the load among different gears, and the test result is influenced is solved. By arranging the load supplementing branch circuit and the controller, whether load switching operation is carried out or not is judged quickly, and under the condition that the load is determined to be switching, the load is supplemented or removed through the load supplementing branch circuit, so that fluctuation of load parameters in the process of switching the load between different gears is reduced, and the test result is more accurate.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application. In the drawings:
FIG. 1 is a schematic diagram of a load control system provided in accordance with an embodiment of the present application;
FIG. 2 is a circuit diagram of a load control system provided according to an embodiment of the present application;
FIG. 3a is a circuit diagram illustrating an alternative connection between an arc signal acquisition circuit and a high-speed sampling loop according to an embodiment of the present application;
FIG. 3b is a circuit diagram illustrating an alternative connection between an arc signal acquisition circuit and a high-speed sampling loop according to an embodiment of the present application;
FIG. 4 is a flow chart of a load control method provided according to an embodiment of the present application;
fig. 5 is a schematic diagram of a load control device provided according to an embodiment of the present application.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but 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.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
According to an embodiment of the present application, a load control system is provided.
Fig. 1 is a schematic diagram of a load control system provided according to an embodiment of the present application. As shown in fig. 1, the system includes:
the arc signal detection circuit 102 is configured to detect an arc signal value of a contactor of each load branch 108, wherein each load branch 108 is connected in parallel to the test loop.
Specifically, the arc signal detection circuit 102 includes an arc voltage and arc current collection circuit and a high-speed sampling circuit, wherein the arc voltage and arc current collection circuit is disposed in each load branch 108, and the high-speed sampling circuit corresponds to a plurality of arc voltage and arc current collection circuits and is connected to the arc voltage and arc current collection circuits in the load branches 108 to be sampled when sampling is required.
It should be noted that fig. 2 is a circuit diagram of a load control system provided according to an embodiment of the present application. As shown in fig. 2, each load branch 108 includes a load circuit, wherein the load circuit includes a load and a contactor, the contactor is closed when the load branch 108 is connected, the contactor is opened when the load branch 108 is cut off, and the contactor generates an arc when the contactor is closed and opened. Each contactor is connected with an arc signal detection circuit 102, so that the arc voltage or the arc current of the arc can be rapidly measured when the contactor generates the arc, and whether the contactor is opened or closed is judged by measuring the arc voltage or the arc current.
And a load supplement branch 104 connected in parallel with the plurality of load branches 108, wherein the load supplement branch 104 includes a supplement load and a first switch.
In particular, the first switch may be an electronic transfer switch. As shown in fig. 2, when the contactor is closed or opened, the resistance or power of the load may fluctuate or even oscillate, thereby affecting the test result. Therefore, the electronic transfer switch and the load supplement circuit can be used as compensation when the contactor is closed or opened, thereby reducing the impact and fluctuation to the load in the load branch 108. The load supplementary loop can be composed of one or more loads, so that the output power is adjusted by adjusting the combination and the number of the loads, and the impact and the influence on the loads and the test result in the adjustment process of the contactor are reduced.
And the controller 106 is connected with the arc signal detection circuit 102, and is used for closing the first switch of the target load branch 108 when the arc signal value of the contactor is greater than a first threshold value after the test circuit receives the opening signal of the contactor aiming at the target load branch 108, and is also used for opening the first switch of the target load branch 108 when the arc signal value of the contactor is greater than a second threshold value after the test circuit receives the closing signal of the contactor aiming at the target load branch 108.
Specifically, as shown in fig. 2, when the test loop changes the load, the test loop receives a breaking signal and controls the contactor to perform a breaking operation, at this time, the arc signal detection circuit 102 detects the contactor whose breaking state changes in real time, when a voltage or current signal of the arc is detected, compares a detected signal value with a preset threshold, when the contactor is opened, closes the electronic change-over switch when the signal value is greater than a first threshold, and when the contactor is closed, opens the electronic change-over switch when the signal value is greater than a second threshold, thereby achieving an effect of reducing impact and influence on the load and the test result during the adjustment process of the contactor.
In the load control device provided in the embodiment of the present application, the arc signal value of the contactor of each load branch 108 is detected by the arc signal detection circuit 102, wherein each load branch 108 is connected in parallel to the test loop; a load supplement branch 104 connected in parallel with the plurality of load branches 108, wherein the load supplement branch 104 includes a supplement load and a first switch; the controller 106 is connected to the arc signal detection circuit 102, and is configured to close the first switch of the target load branch 108 when an arc signal value of the contactor is greater than a first threshold value after the test loop receives an open signal of the contactor for the target load branch 108, and to open the first switch of the target load branch 108 when the arc signal value of the contactor is greater than a second threshold value after the test loop receives a close signal of the contactor for the target load branch 108, so that a problem that a test result is affected due to fluctuation of load parameters in a process of switching a load between different gears in an equipment test process in the related art is solved. By arranging the load supplementing branch 104 and the controller 106, whether load switching operation is carried out or not is judged quickly, and under the condition that the load is determined to be switching, the load is supplemented or removed through the load supplementing branch 104, so that fluctuation of load parameters in the process of switching the load between different gears is reduced, and the test result is more accurate.
Optionally, in the load control system provided in the embodiment of the present application, the arc signal detection circuit 10 includes: the plurality of arc signal acquisition circuits are respectively used for acquiring arc signals between contacts of the contactors of each load branch; and the sampling circuit is connected with the arc signal acquisition circuit corresponding to the target load branch through the second switch and is used for sampling the arc signal of the contactor of the target load branch to obtain an arc signal value.
Specifically, the arc signal acquisition circuit may be an arc signal acquisition loop for acquiring voltage or current of an arc when the contactor generates the arc, the second switch may be a single-pole multi-throw switch, and the sampling circuit may be a high-speed sampling loop. Fig. 3a and 3b are circuit diagrams of a connection between an optional arc signal acquisition circuit and a high-speed sampling circuit according to an embodiment of the present disclosure, and as shown in fig. 3, the high-speed sampling circuit may be connected to arc signal acquisition circuits in multiple load branches through a single-pole multi-throw switch, and connected to an arc signal acquisition circuit in a load branch to be sampled when sampling is required through the single-pole multi-throw switch, so that the effects of acquiring an arc signal and saving the cost of the high-speed sampling circuit are achieved.
Optionally, in the load control system provided in the embodiment of the present application, the sampling circuit includes: the first sampling circuit is used for sampling an arc signal of the contactor of the target load branch circuit to obtain an arc voltage value; and the second sampling circuit is used for sampling the arc signal of the contactor of the target load branch circuit to obtain the arc current value.
Specifically, the high-speed sampling circuit may be a high-speed voltage sampling circuit that collects arc voltage, or may be a high-speed current sampling circuit that collects arc current. When the contactor is disconnected, the arc voltage can be acquired only through the high-speed voltage sampling loop, and the arc voltage information is compared with a first threshold value, so that the electronic change-over switch is controlled; when the contactor is closed, arc voltage and arc current information generated by the contactor can be collected through the high-speed voltage sampling circuit and the high-speed current sampling circuit, and the arc voltage and the arc current information are compared with a second threshold value, so that the electronic change-over switch is controlled, and the effect of more accurately controlling the electronic change-over switch is achieved.
According to an embodiment of the present application, a load control method is provided. Fig. 4 is a flowchart of a load control method according to an embodiment of the present application. As shown in fig. 4, the method includes:
step S402, when the test circuit receives an open signal of the contactor for the target load branch, acquires an arc signal between contacts of the contactor.
Specifically, as shown in fig. 2, when the load is changed, the test circuit receives a breaking signal and controls the contactor to perform a breaking operation, and at this time, the arc signal detection circuit performs real-time detection on the contactor whose breaking state changes, so as to obtain a real-time arc signal of the contactor, and determines whether the contactor reaches a completely open state or a completely closed state according to the arc signal.
Step S404, judging whether the arc signal value corresponding to the arc signal is larger than a first threshold value.
Specifically, after the real-time arc signal of the contactor is obtained, the arc voltage value in the arc signal and the first threshold value are judged, so that whether the contactor is completely disconnected or not is determined.
And step S406, under the condition that the arc signal value is greater than the first threshold value, controlling a switch on a load supplement branch circuit to be closed so as to perform load compensation on the test loop, wherein the load supplement branch circuit is connected with the target load branch circuit in parallel.
Specifically, when the arc signal detection circuit detects that the voltage value of the contactor is greater than the first threshold value, the electronic change-over switch on the load supplement branch is closed through the controller, and the load supplement loop is added to the load branch where the contactor is located, so that the effect of compensating the test loop is achieved, and the impact and the influence on the load and the test result in the disconnection process of the contactor are reduced.
According to the load control method provided by the embodiment of the application, the arc signals between the contacts of the contactor are obtained under the condition that the test loop receives the breaking signals of the contactor aiming at the target load branch; judging whether an arc signal value corresponding to the arc signal is greater than a first threshold value; and under the condition that the arc signal value is larger than a first threshold value, controlling a switch on a load supplement branch circuit to be closed so as to perform load compensation on the test loop, wherein the load supplement branch circuit is connected with the target load branch circuit in parallel. The problem that in the related art, in the process of testing equipment, the load parameters fluctuate in the process of switching the load among different gears, and the test result is influenced is solved. By arranging the load supplementing branch circuit and the controller, whether load switching operation is carried out or not is judged quickly, and under the condition that the load is determined to be switching, the load is supplemented or removed through the load supplementing branch circuit, so that fluctuation of load parameters in the process of switching the load between different gears is reduced, and the test result is more accurate.
Optionally, in the load control method provided in an embodiment of the present application, in a case that the test loop receives an opening signal of the contactor for the target load branch, acquiring an arc signal between contacts of the contactor includes: under the condition that the test circuit receives a breaking signal of a contactor aiming at the target load branch, the sampling circuit is switched to an arc signal acquisition circuit corresponding to the target load branch; controlling an arc signal acquisition circuit to acquire arc signals between contacts of the contactor; and controlling the sampling circuit to sample the arc signal to obtain an arc signal value corresponding to the arc signal.
Specifically, before a circuit breaking contactor is tested, a single-pole multi-throw switch of a high-speed sampling circuit is switched to an arc signal acquisition circuit in a branch where the contactor corresponding to a breaking control signal is located through the contactor breaking control signal, the arc signal acquisition circuit is controlled to acquire an arc signal when the contactor is broken, an arc signal value corresponding to the arc signal is obtained through the high-speed sampling circuit, and therefore the state of the contactor is determined through the arc signal value.
Optionally, in the load control method provided in the embodiment of the present application, determining whether an arc signal value corresponding to the arc signal is greater than a first threshold includes: and acquiring an arc voltage value corresponding to the arc signal, and judging whether the arc voltage value is greater than a first voltage threshold value.
Specifically, after an arc signal value corresponding to the arc signal is obtained through the high-speed sampling loop, the arc signal value is compared with a first voltage threshold value, whether the arc signal value is larger than the first voltage threshold value or not is judged, when the arc signal value is larger than the first voltage threshold value, the electronic change-over switch is closed, and when the arc signal value is smaller than the first voltage threshold value, the electronic change-over switch is not processed.
For example, when the arc signal value is 2V and the first voltage threshold is 1V, the electronic change-over switch is closed; when the arc signal value is 0.5V and the first voltage threshold is 1V, the electronic transfer switch is not performed.
Optionally, in the load control method provided in this embodiment of the present application, in a case that the arc signal value is greater than the first threshold, the switch on the load supplement branch is controlled to be closed to perform load compensation on the test loop, where after the load supplement branch is connected in parallel with the target load branch, the method further includes: under the condition that a test loop receives a closing signal of a contactor aiming at a target load branch, acquiring an arc signal between contacts of the contactor; judging whether an arc signal value corresponding to the arc signal is greater than a second threshold value; and controlling the switch on the load supplement branch circuit to be switched off under the condition that the arc signal value is greater than the second threshold value.
Specifically, when the test loop changes the load, the contactor is controlled to be closed when a signal for closing the contactor is received, at the moment, the arc signal detection circuit detects the contactor which is changed in a closed state in real time to obtain a real-time arc signal of the contactor, and after the real-time arc signal of the contactor is obtained, an arc signal value corresponding to the arc signal is judged according to the second threshold value, so that whether the contactor is completely closed is determined. When the arc signal detection circuit detects that the voltage value of the contactor is larger than the second threshold value, the contactor is judged to be completely closed, the electronic switch on the load supplement branch is disconnected through the controller, and the load supplement loop is cut off from the load branch where the contactor is located, so that impact and influence on a load and a test result in the disconnection process of the contactor are reduced.
Optionally, in the load control method provided in the embodiment of the present application, determining whether an arc signal value corresponding to the arc signal is greater than a second threshold includes: acquiring an arc voltage value corresponding to the arc signal, and judging whether the arc voltage value is greater than a second voltage threshold value; or acquiring an arc current value corresponding to the arc signal, and judging whether the arc current value is greater than a current threshold value.
Specifically, after the arc signal value corresponding to the arc signal is obtained through the high-speed sampling loop, the arc voltage value in the arc signal value is compared with a second voltage threshold value, or the arc current value is compared with a current threshold value, and whether the arc voltage value is greater than the second voltage threshold value or whether the arc current value is greater than the current threshold value is judged. And when the arc voltage value is larger than the second voltage threshold value or the arc current value is larger than the current threshold value, performing the opening operation of the electronic change-over switch.
For example, when the arc voltage value is 3V and the second voltage threshold is 2.9V, the electronic change-over switch is turned off; or when the arc current value is 0.5A and the current threshold value is 0.2A, the electronic change-over switch is turned off.
It should be noted that the steps illustrated in the flowcharts of the figures may be performed in a computer system such as a set of computer-executable instructions and that, although a logical order is illustrated in the flowcharts, in some cases, the steps illustrated or described may be performed in an order different than presented herein.
The embodiment of the present application further provides a load control device, and it should be noted that the load control device according to the embodiment of the present application may be used to execute the method for load control according to the embodiment of the present application. The following describes a load control device according to an embodiment of the present application.
Fig. 5 is a schematic diagram of a load control device according to an embodiment of the present application. As shown in fig. 5, the apparatus includes: a first acquiring unit 502, a first judging unit 504, and a first controlling unit 506.
Specifically, the first obtaining unit 502 is configured to obtain an arc signal between contacts of a contactor when the test loop receives an open signal of the contactor for the target load branch;
a first judging unit 504, configured to judge whether an arc signal value corresponding to the arc signal is greater than a first threshold;
and a first control unit 506, configured to control a switch on a load supplement branch to close to perform load compensation on the test loop when the arc signal value is greater than a first threshold, where the load supplement branch is connected in parallel with the target load branch.
The load control device provided in the embodiment of the present application, through the first obtaining unit 502, is configured to obtain an arc signal between contacts of a contactor when a test loop receives a breaking signal of the contactor for a target load branch; a first judging unit 504, configured to judge whether an arc signal value corresponding to the arc signal is greater than a first threshold; and a first control unit 506, configured to control a switch on a load supplement branch to close to perform load compensation on the test loop when the arc signal value is greater than a first threshold, where the load supplement branch is connected in parallel with the target load branch. The problem of in the equipment test process among the related art, the load parameter fluctuates in the process that the load switches between different gears, influences the test result is solved. By arranging the load supplementing branch circuit and the controller, whether load switching operation is carried out or not is judged quickly, and under the condition that the load is determined to be switching, the load is supplemented or removed through the load supplementing branch circuit, so that fluctuation of load parameters in the process of switching the load between different gears is reduced, and the test result is more accurate.
Optionally, in the load control device provided in the embodiment of the present application, the first obtaining unit 502 includes: the first switching module is used for switching the sampling circuit to the arc signal acquisition circuit corresponding to the target load branch circuit under the condition that the test loop receives a breaking signal of the contactor aiming at the target load branch circuit; the first control module is used for controlling the arc signal acquisition circuit to acquire arc signals between contacts of the contactor; and the second control module is used for controlling the sampling circuit to sample the arc signal to obtain an arc signal value corresponding to the arc signal.
Optionally, in the load control device provided in the embodiment of the present application, the first determining unit 504 includes: and the third control module is used for acquiring an arc voltage value corresponding to the arc signal and judging whether the arc voltage value is greater than the first voltage threshold value.
Optionally, in the load control device provided in the embodiment of the present application, the device further includes: the second acquisition unit is used for acquiring an arc signal between contacts of the contactor under the condition that the test circuit receives a closing signal of the contactor aiming at the target load branch; the second judging unit is used for judging whether the arc signal value corresponding to the arc signal is larger than a second threshold value; and the second control unit is used for controlling the switch on the load supplement branch circuit to be switched off under the condition that the arc signal value is greater than a second threshold value.
Optionally, in the load control device provided in the embodiment of the present application, the second control unit includes: the acquisition module is used for acquiring an arc voltage value corresponding to the arc signal and judging whether the arc voltage value is greater than a second voltage threshold value; or acquiring an arc current value corresponding to the arc signal, and judging whether the arc current value is greater than a current threshold value.
The load control device includes a processor and a memory, the first obtaining unit 502, the first determining unit 504, the first control unit 506, and the like are all stored in the memory as program units, and the processor executes the program units stored in the memory to implement corresponding functions.
The processor comprises a kernel, and the kernel calls the corresponding program unit from the memory. The kernel can be set to be one or more than one, and the process that the load is switched among different gears in the process of testing equipment in the related technology is realized by adjusting kernel parameters, so that the fluctuation of load parameters is caused, and the test result is influenced.
The memory may include volatile memory in a computer readable medium, Random Access Memory (RAM) and/or nonvolatile memory such as Read Only Memory (ROM) or flash memory (flash RAM), and the memory includes at least one memory chip.
The embodiment of the application also provides a nonvolatile storage medium, wherein the nonvolatile storage medium comprises a stored program, and the program controls the equipment where the nonvolatile storage medium is located to execute a load control method when running.
The embodiment of the application also provides an electronic device, which comprises a processor and a memory; the memory has stored therein computer readable instructions, and the processor is configured to execute the computer readable instructions, wherein the computer readable instructions when executed perform a method of load control. The electronic device herein may be a server, a PC, a PAD, a mobile phone, etc.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include forms of volatile memory in a computer readable medium, Random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). The memory is an example of a computer-readable medium.
Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.
It should also be noted that 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 the process, method, article, or apparatus that comprises the element.
The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (10)
1. A load control system, comprising:
the device comprises an arc signal detection circuit, a detection circuit and a control circuit, wherein the arc signal detection circuit is used for detecting the arc signal value of a contactor of each load branch, and each load branch is connected in parallel in a test loop;
the load supplementing branch circuit is connected with the plurality of load branch circuits in parallel, wherein the load supplementing branch circuit comprises a supplementing load and a first switch;
the controller is connected with the arc signal detection circuit, and is used for closing the first switch of the target load branch when the arc signal value of the contactor is greater than a first threshold value after the test circuit receives an opening signal of the contactor for the target load branch, and is also used for opening the first switch of the target load branch when the arc signal value of the contactor is greater than a second threshold value after the test circuit receives a closing signal of the contactor for the target load branch.
2. The load control system of claim 1, wherein the arcing signal detection circuit comprises:
the plurality of arc signal acquisition circuits are respectively used for acquiring arc signals between the contacts of the contactor of each load branch;
and the sampling circuit is connected with the arc signal acquisition circuit corresponding to the target load branch through a second switch and is used for sampling the arc signal of the contactor of the target load branch to obtain an arc signal value.
3. The load control system of claim 2, wherein the sampling circuit comprises:
the first sampling circuit is used for sampling an arc signal of the contactor of the target load branch circuit to obtain an arc voltage value;
and the second sampling circuit is used for sampling the arc signal of the contactor of the target load branch circuit to obtain the arc current value.
4. A load control method applied to the load control system according to any one of claims 1 to 3, comprising:
under the condition that a test loop receives a breaking signal of a contactor aiming at a target load branch, acquiring an arc signal between contacts of the contactor;
judging whether an arc signal value corresponding to the arc signal is greater than a first threshold value;
and under the condition that the arc signal value is larger than the first threshold value, controlling a switch on a load supplement branch to be closed so as to perform load compensation on the test loop, wherein the load supplement branch is connected with the target load branch in parallel.
5. The method of claim 4, wherein in the event that the test loop receives an open signal for a contactor of the target load branch, acquiring an arc signal between contacts of the contactor comprises:
under the condition that the test circuit receives a breaking signal of a contactor aiming at the target load branch, switching a sampling circuit to an arc signal acquisition circuit corresponding to the target load branch;
controlling the arc signal acquisition circuit to acquire arc signals between contacts of the contactor;
and controlling the sampling circuit to sample the arc signal to obtain an arc signal value corresponding to the arc signal.
6. The method of claim 4, wherein determining whether the arc signal value corresponding to the arc signal is greater than a first threshold value comprises:
and acquiring an arc voltage value corresponding to the arc signal, and judging whether the arc voltage value is greater than a first voltage threshold value.
7. The method of claim 4, wherein in the event that the arc signal value is greater than the first threshold value, controlling a switch on a load supplement branch to close to load compensate the test loop, wherein after the load supplement branch is connected in parallel with the target load branch, the method further comprises:
acquiring an arc signal between contacts of a contactor under the condition that the test loop receives a closing signal of the contactor aiming at the target load branch;
judging whether an arc signal value corresponding to the arc signal is greater than a second threshold value;
and controlling a switch on the load supplement branch to be switched off when the arc signal value is larger than the second threshold value.
8. The method of claim 7, wherein determining whether the arc signal value corresponding to the arc signal is greater than a second threshold value comprises:
acquiring an arc voltage value corresponding to the arc signal, and judging whether the arc voltage value is greater than a second voltage threshold value; or
And acquiring an arc current value corresponding to the arc signal, and judging whether the arc current value is greater than a current threshold value.
9. A non-volatile storage medium, comprising a stored program, wherein the program when executed controls a device in which the non-volatile storage medium is located to perform the load control method of any one of claims 4 to 8.
10. An electronic device comprising a processor and a memory, the memory having stored thereon computer-readable instructions, the processor being configured to execute the computer-readable instructions, wherein the computer-readable instructions are configured to execute the load control method according to any one of claims 4 to 8.
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