Power extraction device, method, control device and computer readable storage medium

Abstract

The present application relates to a power-drawing device, method, control device and computer-readable storage medium. In the power-drawing device, the positive output end of the first current transformer and the positive output end of the second current transformer are both connected to the positive input end of the intelligent gateway, and the negative output ends are both connected to the negative input end of the intelligent gateway; the first current sensor and the second current sensor respectively detect the first current value output by the first current transformer and the second current value output by the second current transformer in turn; the voltage sensor detects the current voltage value of the intelligent gateway; the control device obtains the current voltage value, and controls the driving device to adjust the magnetic flux of the first current transformer when the current voltage value is not equal to the preset voltage value; the first current value and the second current value are also obtained, and the driving device is controlled to adjust the magnetic flux of the second current transformer according to the first current value and the second current value, which solves the problem that the current of the wire is too small to meet the power demand of the high-power intelligent gateway device when high-voltage power is drawn.

Description

Technical Field

[0001] The present application relates to the technical field of power grid equipment, and in particular to a power extraction device, method, control device and computer-readable storage medium. Background Art

[0002] With the development of the scale and intelligence of the power grid, the power of the smart gateway devices used to monitor and manage the operation of the power grid is also increasing. Since the smart gateway devices are usually installed directly on the surface of the high-voltage transmission line, the traditional offline power supply cannot power the high-power gateway devices, so the high-voltage power supply technology has emerged. However, the traditional high-voltage power supply technology cannot meet the power demand of the high-power smart gateway devices when the current of the high-voltage wire is too small and unstable. Summary of the invention

[0003] Based on this, it is necessary to provide a power supply device, method, control device and storage medium that can supply power to the intelligent gateway device on the high-voltage transmission line in order to solve the above technical problems.

[0004] A power supply device, comprising a first current transformer, a second current transformer, a first current sensor, a second current sensor, a voltage sensor, a drive device and a control device; the positive output end of the first current transformer and the positive output end of the second current transformer are both connected to the positive input end of the intelligent gateway, and the negative output end of the first current transformer and the negative output end of the second current transformer are both connected to the negative input end of the intelligent gateway;

[0005] The first current sensor is used to detect a first current value output by the first current transformer;

[0006] The second current sensor is used to detect the second current value output by the second current transformer;

[0007] The voltage sensor is used to detect the current voltage value of the smart gateway;

[0008] The control device is used to obtain the current voltage value, and control the driving device to adjust the magnetic flux of the first current transformer when the current voltage value is not equal to the preset voltage value; it is also used to obtain the first current value and the second current value, and control the driving device to adjust the magnetic flux of the second current transformer according to the first current value and the second current value.

[0009] In one of the embodiments, it further includes a first wireless transmission circuit and a second wireless transmission circuit;

[0010] The positive input terminal of the first wireless transmission circuit is connected to the positive output terminal of the first current transformer, and the negative input terminal of the first wireless transmission circuit is connected to the negative output terminal of the first current transformer;

[0011] The positive input terminal of the second wireless transmission circuit is connected to the positive output terminal of the second current transformer, and the negative input terminal of the second wireless transmission circuit is connected to the negative output terminal of the second current transformer;

[0012] The positive output end of the first wireless transmission circuit and the positive output end of the second wireless transmission circuit are both connected to the positive input end of the intelligent gateway, and the negative output end of the first wireless transmission circuit and the negative output end of the second wireless transmission circuit are both connected to the negative input end of the intelligent gateway.

[0013] In one embodiment, it further includes a first rectifier circuit, a second rectifier circuit, a third rectifier circuit and a fourth rectifier circuit;

[0014] The first input end of the first rectifier circuit is connected to the positive output end of the first current transformer, the second input end of the first rectifier circuit is connected to the negative output end of the first current transformer, the positive output end of the first rectifier circuit is connected to the positive input end of the first wireless transmission circuit, and the negative output end of the first rectifier circuit is connected to the negative input end of the first wireless transmission circuit;

[0015] The first input end of the third rectifier circuit is connected to the positive output end of the second current transformer, the second input end of the third rectifier circuit is connected to the negative output end of the second current transformer, the positive output end of the third rectifier circuit is connected to the positive input end of the second wireless transmission circuit, and the negative output end of the third rectifier circuit is connected to the negative input end of the second wireless transmission circuit;

[0016] The first input end of the second rectifier circuit is connected to the positive output end of the first wireless transmission circuit, and the second input end of the second rectifier circuit is connected to the negative output end of the first wireless transmission circuit;

[0017] The first input end of the fourth rectifier circuit is connected to the positive output end of the second wireless transmission circuit, and the second input end of the fourth rectifier circuit is connected to the negative output end of the second wireless transmission circuit;

[0018] The positive output end of the second rectifier circuit and the positive output end of the fourth rectifier circuit are both connected to the positive input end of the intelligent gateway, and the negative output end of the second rectifier circuit and the negative output end of the fourth rectifier circuit are both connected to the negative input end of the intelligent gateway.

[0019] In one embodiment, it further includes a first voltage stabilizing circuit, a second voltage stabilizing circuit, a third voltage stabilizing circuit and a fourth voltage stabilizing circuit;

[0020] The first end of the first voltage stabilizing circuit is connected to the positive output end of the first rectifier circuit, and the second end of the first voltage stabilizing circuit is connected to the negative output end of the first rectifier circuit;

[0021] A first end of the third voltage stabilizing circuit is connected to a positive output end of the third rectifying circuit, and a second end of the third voltage stabilizing circuit is connected to a negative output end of the third rectifying circuit;

[0022] The first end of the second voltage stabilizing circuit and the first end of the fourth voltage stabilizing circuit are both connected to the positive input end of the intelligent gateway, and the second end of the second voltage stabilizing circuit and the second end of the fourth voltage stabilizing circuit are both connected to the negative input end of the intelligent gateway.

[0023] In one of the embodiments, it further includes a first inverter circuit and a second inverter circuit;

[0024] The first input end of the first inverter circuit is connected to the first end of the first voltage stabilizing circuit, the second input end of the first inverter circuit is connected to the second end of the first voltage stabilizing circuit, the first output end of the first inverter circuit is connected to the positive input end of the first wireless transmission circuit, and the second output end of the first inverter circuit is connected to the negative input end of the first wireless transmission circuit;

[0025] The first input end of the second inverter circuit is connected to the first end of the three voltage regulator circuits, the second end of the second inverter circuit is connected to the second end of the third voltage regulator circuit, the first output end of the second inverter circuit is connected to the positive input end of the second wireless transmission circuit, and the second output end of the second inverter circuit is connected to the negative input end of the second wireless transmission circuit.

[0026] In one of the embodiments, it further includes a first protection circuit and a second protection circuit;

[0027] A first end of the first protection circuit is connected to a positive output end of the first current transformer, and a second end of the first protection circuit is connected to a negative output end of the first current transformer;

[0028] The first end of the second protection circuit is connected to the positive output end of the second current transformer, and the second end of the second protection circuit is connected to the negative output end of the second current transformer.

[0029] A method for obtaining electricity comprises the following steps:

[0030] Obtain the current voltage value of the smart gateway; wherein the current voltage value is detected by a voltage sensor;

[0031] When the current voltage value is not equal to the preset voltage value, controlling the driving device to adjust the magnetic flux of the first current transformer;

[0032] Obtain a first current value and a second current value; wherein the first current value is a current value output by a first current transformer measured by a first current sensor; and the second current value is a current value output by a second current transformer measured by a second current sensor; wherein the positive output end of the first current transformer and the positive output end of the second current transformer are both connected to the positive input end of the intelligent gateway, and the negative output end of the first current transformer and the negative output end of the second current transformer are both connected to the negative input end of the intelligent gateway;

[0033] The driving device is controlled according to the first current value and the second current value to adjust the magnetic flux of the second current transformer.

[0034] In one embodiment, the step of controlling the driving device to adjust the magnetic flux of the second current transformer according to the first current value and the second current value includes:

[0035] When the second current value is greater than the first current value, controlling the driving device to reduce the magnetic flux of the second current transformer;

[0036] In a case where the second current value is smaller than the first current value, the driving device is controlled to increase the magnetic flux of the second current transformer.

[0037] A power taking control device, comprising:

[0038] The voltage value acquisition module is used to obtain the current voltage value of the intelligent gateway; wherein the current voltage value is detected by the voltage sensor;

[0039] A voltage regulating module, used for controlling the driving device to adjust the magnetic flux of the first current transformer when the current voltage value is not equal to the preset voltage value;

[0040] A current value acquisition module, used to acquire a first current value and a second current value; wherein the first current value is a current value output by a first current transformer measured by a first current sensor; and the second current value is a current value output by a second current transformer measured by a second current sensor; wherein the positive output terminal of the first current transformer and the positive output terminal of the second current transformer are both connected to the positive input terminal of the intelligent gateway, and the negative output terminal of the first current transformer and the negative output terminal of the second current transformer are both connected to the negative input terminal of the intelligent gateway;

[0041] The current regulating module is used to control the driving device to regulate the magnetic flux of the second current transformer according to the first current value and the second current value.

[0042] A computer-readable storage medium stores a computer program, which implements the steps of the above method when executed by a processor.

[0043] The above-mentioned power supply equipment includes a first current transformer, a second current transformer, a first current sensor, a second current sensor, a voltage sensor, a driving device and a control device; the positive output end of the first current transformer and the positive output end of the second current transformer are both connected to the positive input end of the intelligent gateway, and the negative output ends are both connected to the negative input end of the intelligent gateway; the first current sensor is used to detect the first current value output by the first current transformer; the second current sensor is used to detect the second current value output by the second current transformer; the voltage sensor is used to detect the current voltage value of the intelligent gateway; the control device is used to obtain the current voltage value, and control the driving device to adjust the magnetic flux of the first current transformer when the current voltage value is not equal to the preset voltage value; it is also used to obtain the first current value and the second current value, and control the driving device to adjust the magnetic flux of the second current transformer according to the first current value and the second current value, which solves the problem that the current of the wire is too small to meet the use of high-power equipment when high-voltage power is drawn, and meets the power demand of high-power intelligent gateway equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0045] Figure 1 is a first schematic structural diagram of a power extraction device in an embodiment;

[0046] Figure 2 is a second schematic structural diagram of a power extraction device in one embodiment;

[0047] Figure 3 is a third schematic structural diagram of a power extraction device in one embodiment;

[0048] Figure 4 A schematic diagram of a flow chart of a method for obtaining electricity in one embodiment;

[0049] Figure 5 The figure is a flow chart of the steps of controlling a driving device to adjust the magnetic flux of a second current transformer according to a first current value and a second current value in one embodiment. DETAILED DESCRIPTION

[0050] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0051] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0052] It can be understood that the terms "first", "second", etc. used in the present application can be used in this article to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish the first element from another element.

[0053] Spatially relative terms such as "under," "beneath," "below," "under," "above," "above," and the like may be used herein to describe the relationship of an element or feature shown in the figures to other elements or features. It should be understood that, in addition to the orientations shown in the figures, spatially relative terms also include different orientations of the device in use and operation. For example, if the device in the accompanying drawings is flipped, an element or feature described as "under other elements" or "under it" or "under it" will be oriented as being "above" the other elements or features. Thus, the exemplary terms "under" and "under" may include both upper and lower orientations. In addition, the device may also include additional orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptors used herein are interpreted accordingly.

[0054] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element, or connected to the other element through an intermediate element. In addition, the "connection" in the following embodiments should be understood as "electrical connection", "communication connection", etc. if there is transmission of electrical signals or data between the connected objects.

[0055] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" etc. specify the presence of stated features, wholes, steps, operations, components, parts or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof.

[0056] As described in the background technology, with the development of the scale and intelligence of the power grid, the power of the intelligent gateway devices used to monitor and manage the operation of the power grid has also been increasing. Since the intelligent gateway devices are usually installed directly on the surface of the high-voltage transmission line, the traditional offline power supply cannot power the high-power gateway devices, so the high-voltage power supply technology has emerged. However, the traditional high-voltage power supply technology cannot meet the power demand of the high-power intelligent gateway devices when the current of the high-voltage wire is too small and unstable.

[0057] Based on the above problems, the present application proposes a power supply device, method, control device and storage medium that can supply power to an intelligent gateway device on a high-voltage transmission line.

[0058] In one embodiment, Figure 1 As shown, a power supply device is provided, including a first current transformer 10, a second current transformer 20, a first current sensor 30, a second current sensor 40, a voltage sensor 50, a drive device 60 and a control device 70; the positive output end of the first current transformer 10 and the positive output end of the second current transformer 20 are both connected to the positive input end of the intelligent gateway 80, and the negative output ends are both connected to the negative input end of the intelligent gateway 80;

[0059] The first current sensor 30 is used to detect the first current value output by the first current transformer 10;

[0060] The second current sensor 40 is used to detect the second current value output by the second current transformer 20;

[0061] The voltage sensor 50 is used to detect the current voltage value of the intelligent gateway 80;

[0062] The control device 70 is used to obtain the current voltage value, and control the drive device 60 to adjust the magnetic flux of the first current transformer 10 when the current voltage value is not equal to the preset voltage value; it is also used to obtain the first current value and the second current value, and control the drive device 60 to adjust the magnetic flux of the second current transformer 20 according to the first current value and the second current value.

[0063] It should be noted that the first current transformer 10 and the second current transformer are current transformers with adjustable magnetic flux, and optionally, they are current transformers with adjustable air gap; the first current sensor 30 and the second current sensor 40 are any current sensors in the art, as long as they can measure the current of the first current transformer 10 and the second current transformer 20, the first current sensor 30 and the second current sensor 40 can be connected in series in the secondary rectifier filter circuit to measure the current output of the current transformer in real time; the voltage sensor 50 is any voltage sensor in the art, as long as it can measure the voltage of the intelligent gateway 80; the intelligent gateway 80 is arranged on the surface of the high-voltage transmission line, and is a high-power intelligent gateway device in the art, including a high-power monitoring device for monitoring the temperature, current and other parameters of the cable and managing the operation of the power grid. The driving device is any motor in the art, which can change the magnetic flux of the current transformer, and optionally, it is a stepping motor, which is used to control the air gap of the magnetic core of the adjustable air gap current transformer and change the magnetic flux of the current transformer.

[0064] The type of control device is not limited and can be set according to the actual application situation. For example, it can be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it can also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc., as long as the current voltage value of the gateway device can be obtained, the driving device can be controlled according to the current voltage value to adjust the magnetic flux of the first current transformer, the first current value and the second current value can be obtained, and the driving device can be controlled according to the first current value and the second current value to adjust the magnetic flux of the second current transformer.

[0065] Specifically, the preset voltage is the rated voltage of the gateway device 80; the control device 70 obtains the current voltage value of the intelligent gateway 80 transmitted by the voltage sensor 50, and when the current voltage value and the preset voltage value are not equal, calculates the deviation between the current voltage value and the preset voltage value, and outputs a PWM wave to control the drive device 60 to adjust the magnetic flux of the first current transformer 10 until the actual voltage of the intelligent gateway 80 reaches the preset voltage. Specifically, when the current voltage is greater than the preset voltage value, the control drive device 60 drives the magnetic core of the first current transformer 10 to rotate in a clockwise direction to reduce the magnetic flux of the first current transformer 10; when the current voltage is less than the preset voltage value, the control drive device 60 drives the magnetic core of the first current transformer 10 to rotate in a counterclockwise direction to increase the magnetic flux of the first current transformer 10.

[0066] The control device 70 is also used to obtain the first current value output by the first current transformer 10 transmitted by the first current sensor 30 and the second current value output by the second current transformer 20 output by the second current sensor 40; and control the driving device 60 to adjust the magnetic flux of the second current transformer 20 according to the first current value and the second current value. Specifically, the first current value is used as the target current, and the deviation between the second current value and the first current value is calculated. When the second current value is greater than the target current, the driving device 60 is controlled to drive the magnetic core of the second current transformer 200 to rotate in a clockwise direction to reduce the magnetic flux of the second current transformer 20; when the second current value is less than the target current, the driving device 60 is controlled to drive the magnetic core of the second current transformer 20 to rotate in a counterclockwise direction to increase the magnetic flux of the second current transformer 20. The output voltage is kept stable, and the power of each power supply circuit is consistent, and the service life of the intelligent gateway device is balanced.

[0067] The above-mentioned power supply equipment includes a first current transformer, a second current transformer, a first current sensor, a second current sensor, a voltage sensor, a driving device and a control device; the positive output end of the first current transformer and the positive output end of the second current transformer are both connected to the positive input end of the intelligent gateway, and the negative output ends are both connected to the negative input end of the intelligent gateway; the first current sensor is used to detect the first current value output by the first current transformer; the second current sensor is used to detect the second current value output by the second current transformer; the voltage sensor is used to detect the current voltage value of the intelligent gateway; the control device is used to obtain the current voltage value, and control the driving device to adjust the magnetic flux of the first current transformer when the current voltage value is not equal to the preset voltage value; it is also used to obtain the first current value and the second current value, and control the driving device to adjust the magnetic flux of the second current transformer according to the first current value and the second current value, which solves the problem that the current of the wire is too small to meet the use of high-power equipment when high-voltage power is drawn, and meets the power demand of high-power intelligent gateway equipment.

[0068] In one embodiment, the number of the second current transformer and the second current sensor can be multiple, so that when the current of the transmission line is too small, the power demand of the high-power intelligent gateway device can be met. It should be noted that the number of current transformers and current sensors is equal, and they are connected one-to-one. The input ends of the current transformers are connected to the high-voltage wires, and the output ends are connected to the intelligent gateway device. Optionally, the number of the second current transformer and the second current sensor is two.

[0069] In one embodiment, it further includes a first wireless transmission circuit and a second wireless transmission circuit;

[0070] The positive input terminal of the first wireless transmission circuit is connected to the positive output terminal of the first current transformer, and the negative input terminal is connected to the negative output terminal of the first current transformer;

[0071] The positive input terminal of the second wireless transmission circuit is connected to the positive output terminal of the second current transformer, and the negative input terminal is connected to the negative output terminal of the second current transformer;

[0072] The positive output ends of the first wireless transmission circuit and the second wireless transmission circuit are both connected to the positive input end of the intelligent gateway, and the negative output ends are both connected to the negative input end of the intelligent gateway.

[0073] Specifically, wireless transmission circuits are used to transmit electric energy wirelessly, including contactless power transmission technology, electromagnetic wave technology, and electromagnetic field resonance technology. Among them, contactless power transmission technology uses the principle of electromagnetic induction. Optionally, two coils are placed in adjacent positions. When current flows in one coil, the magnetic flux generated becomes a medium, causing electromotive force to be generated in the other coil; electromagnetic wave technology uses the principle that electromagnetic wave energy can be sent and received through antennas. Optionally, the AC waveform of the electric wave is directly converted into DC in the rectifier circuit for use, but no amplification circuit is used.

[0074] In one embodiment, the number of the second wireless transmission circuits is equal to the number of the second current transformers, and they are connected in a one-to-one correspondence.

[0075] In one embodiment, it further includes a first rectifier circuit, a second rectifier circuit, a third rectifier circuit, and a fourth rectifier circuit;

[0076] The first input end of the first rectifier circuit is connected to the positive output end of the first current transformer, the second input end is connected to the negative output end of the first current transformer, the positive output end is connected to the positive input end of the first wireless transmission circuit, and the negative output end is connected to the negative input end of the first wireless transmission circuit;

[0077] The first input end of the third rectifier circuit is connected to the positive output end of the second current transformer, the second input end is connected to the negative output end of the second current transformer, the positive output end is connected to the positive input end of the second wireless transmission circuit, and the negative output end is connected to the negative input end of the second wireless transmission circuit;

[0078] The first input end of the second rectifier circuit is connected to the positive output end of the first wireless transmission circuit, and the second input end is connected to the negative output end of the first wireless transmission circuit;

[0079] The first input end of the fourth rectifier circuit is connected to the positive output end of the second wireless transmission circuit, and the second input end is connected to the negative output end of the second wireless transmission circuit;

[0080] The positive output end of the second rectifier circuit and the positive output end of the fourth rectifier circuit are both connected to the positive input end of the intelligent gateway, and the negative output ends are both connected to the negative input end of the intelligent gateway.

[0081] Specifically, the first rectifier circuit is used to rectify the output current of the first current transformer; the third rectifier circuit is used to rectify the output current of the second current transformer; the third rectifier circuit is used to rectify the current output by the first wireless transmission circuit; the fourth rectifier circuit is used to rectify the current output by the second wireless transmission circuit. Optionally, the rectifier circuit is a single-phase bridge rectifier circuit.

[0082] In one embodiment, the number of the third rectifier circuits and the fourth rectifier circuits is equal to the number of the second current transformers, and they are connected one-to-one, so that when the current in the transmission line is too small, the power demand of the high-power intelligent gateway device can be met.

[0083] In one embodiment, it further includes a first voltage stabilizing circuit, a second voltage stabilizing circuit, a third voltage stabilizing circuit, and a fourth voltage stabilizing circuit;

[0084] The first end of the first voltage stabilizing circuit is connected to the positive output end of the first rectifier circuit, and the second end is connected to the negative output end of the first rectifier circuit;

[0085] The first end of the third voltage stabilizing circuit is connected to the positive output end of the third rectifier circuit, and the second end is connected to the negative output end of the third rectifier circuit;

[0086] The first ends of the second voltage stabilizing circuit and the fourth voltage stabilizing circuit are both connected to the positive input end of the intelligent gateway, and the second ends are both connected to the negative input end of the intelligent gateway.

[0087] Specifically, the first voltage stabilizing circuit is used to stabilize the current output by the first rectifier circuit, the second voltage stabilizing circuit is used to stabilize the current output by the second rectifier circuit, the third voltage stabilizing circuit is used to stabilize the current output by the third rectifier circuit, and the fourth voltage stabilizing circuit is used to stabilize the current output by the fourth rectifier circuit. Optionally, the voltage stabilizing circuit can be a voltage stabilizing diode or a voltage stabilizing capacitor.

[0088] In one embodiment, the number of third voltage stabilizing circuits is equal to the number of third rectifier circuits and they are connected one-to-one; the number of fourth voltage stabilizing circuits is equal to the number of fourth rectifier circuits and they are connected one-to-one, so that when the current in the transmission line is too small, the power demand of high-power intelligent gateway equipment can be met.

[0089] In one embodiment, it further includes a first inverter circuit and a second inverter circuit;

[0090] The first input end of the first inverter circuit is connected to the first end of the first voltage stabilizing circuit, the second input end is connected to the second end of the first voltage stabilizing circuit, the first output end is connected to the positive input end of the first wireless transmission circuit, and the second output end is connected to the negative input end of the first wireless transmission circuit;

[0091] The first input end of the second inverter circuit is connected to the first end of the three voltage regulator circuits, the second end is connected to the second end of the third voltage regulator circuit, the first output end is connected to the positive input end of the second wireless transmission circuit, and the second output end is connected to the negative input end of the second wireless transmission circuit.

[0092] Specifically, the inverter circuit may be any inverter circuit in the art as long as it can realize the conversion from direct current to alternating current.

[0093] It should be noted that the number of the second inverter circuits is equal to the number of the second current transformers, and they are connected one-to-one, so that when the current in the transmission line is too small, the power demand of the high-power intelligent gateway device can be met.

[0094] In one embodiment, it further includes a first protection circuit and a second protection circuit;

[0095] A first end of the first protection circuit is connected to a positive output end of the first current transformer, and a second end is connected to a negative output end of the first current transformer;

[0096] The first end of the second protection circuit is connected to the positive output end of the second current transformer, and the second end is connected to the negative output end of the second current transformer.

[0097] Specifically, the protection circuit may be any protection circuit in the art, as long as it can prevent the circuit from overvoltage or overcurrent.

[0098] It should be noted that the number of the second protection circuits is equal to the number of the second current transformers, and they are connected one-to-one, so that when the current in the transmission line is too small, the power demand of the high-power intelligent gateway device can be met.

[0099] In order to further illustrate the present application, a specific example is given below:

[0100] like Figure 2 As shown, the first current transformer T1 and the second current transformers T2 and T3 are all current transformers with adjustable air gap. The current transformer with adjustable air gap is composed of two semi-circular magnetic cores, one end of which can be rotated through a connecting shaft, and the other end is disconnected to form an air gap. The driving device M includes a stepper motor 1, a stepper motor 2 and a stepper motor 3. The stepper motor is connected to the semi-circular magnetic core through a movable connecting rod. The rotation of the stepper motor drives the connecting rod to rotate, so that the movable joint on the lower side of the connecting rod moves, drives the magnetic core to rotate, and changes the air gap of the magnetic core. The primary side of the current transformer is a high-voltage transmission line, and the number of turns of the secondary coil is n2. It can draw energy from the high-voltage transmission line to supply power to the load. The resonant capacitor C1 is connected in series with the secondary coil to form a resonant circuit. The first rectifier circuit is composed of diodes VD1~VD4, and the second rectifier circuit is composed of VD 13 ~VD 16The third rectified current has two components, namely VD5 to VD5 and VD9 to VD 12 , the number of the fourth rectifier circuit is two, namely VD 17 ~VD 20 and VD 21 ~VD 24 The first protection circuit is TVS1, and the number of the second protection circuits is two, namely TVS2 and TVS3; the first voltage stabilizing circuit is capacitor C2, and the second voltage stabilizing circuit is capacitor C 13 The number of the third voltage stabilizing circuit is two, namely C4 and C6, and the number of the fourth voltage stabilizing circuit is two, namely C 14 and C 15 The first wireless transmission circuit includes a capacitor C7, a capacitor C 10 , coupling coil L1 and coupling coil L2; the second wireless transmission circuit is two groups, the first group includes capacitor C8, capacitor C 11 , coupling coil L3 and coupling coil L4, the second group includes capacitor C9, capacitor C 12 , coupling coil L5 and coupling coil L6; the above components are connected to each current transformer one by one to form a three-way power-taking circuit. The current sensors are connected in series in the secondary rectifier and filter circuits of the three power-taking circuits in sequence to detect the output currents I1, I2, and I3 of the power-taking circuits in real time and send them to the controller via wireless communication.

[0101] like Figure 3 As shown, the control device includes a load voltage controller and a power balancing controller. On the one hand, the voltage sensor is connected in parallel at both ends of the intelligent gateway, which is used to detect the load voltage V0 in real time and send it to the load voltage controller through wireless communication. The output end of the load voltage controller is connected to the stepper motor 1. The load voltage controller outputs a PWM wave to adjust the rotation angle of the stepper motor 1 according to the preset value of the load voltage and the current voltage value deviation, thereby changing the air gap of the first current transformer magnetic core, controlling the output induced voltage of the first current transformer, and achieving the effect of load voltage control.

[0102] On the other hand, the current sensor detects the output currents I1, I2, and I3 of the power-taking circuit in real time and sends them to the input end of the power balancing controller through wireless communication. The output end is connected to stepper motor 2 and stepper motor 3. Current I1 is the target current. The power balancing controller calculates the deviation between currents I2 and I3 and current I1, and controls the rotation angles of stepper motor 2 and stepper motor 3 by outputting PWM waves to achieve the function of regulating current. Through voltage regulation and power balancing control strategies, the output voltage can be kept stable under the simultaneous regulation of the two controllers, and the power of each power-taking circuit is consistent, and the service life of the equipment is balanced.

[0103] In one embodiment, Figure 4 As shown, a method for obtaining electricity is provided, comprising the steps of:

[0104] S110, obtaining a current voltage value of the smart gateway; wherein the current voltage value is detected by a voltage sensor;

[0105] S120, controlling the driving device to adjust the magnetic flux of the first current transformer when the current voltage value is not equal to the preset voltage value;

[0106] Specifically, the preset voltage is the rated voltage of the gateway device; the current voltage value of the intelligent gateway transmitted by the voltage sensor is obtained, and when the current voltage value and the preset voltage value are not equal, the deviation between the current voltage value and the preset voltage value is calculated, and a PWM wave is output to control the driving device to adjust the magnetic flux of the first current transformer until the actual voltage of the intelligent gateway reaches the preset voltage. Specifically, when the current voltage is greater than the preset voltage value, the driving device is controlled to drive the magnetic core of the first current transformer to rotate in a clockwise direction to reduce the magnetic flux of the first current transformer; when the current voltage is less than the preset voltage value, the driving device is controlled to drive the magnetic core of the first current transformer to rotate in a counterclockwise direction to increase the magnetic flux of the first current transformer.

[0107] S130, obtaining a first current value and a second current value; wherein the first current value is a current value output by a first current transformer measured by a first current sensor; and the second current value is a current value output by a second current transformer measured by a second current sensor; wherein the positive output terminal of the first current transformer and the positive output terminal of the second current transformer are both connected to the positive input terminal of the intelligent gateway, and the negative output terminals are both connected to the negative input terminal of the intelligent gateway;

[0108] S140, controlling the driving device to adjust the magnetic flux of the second current transformer according to the first current value and the second current value.

[0109] Specifically, the first current value output by the first current transformer transmitted by the first current sensor and the second current value output by the second current transformer output by the second current sensor are obtained; and the driving device is controlled to adjust the magnetic flux of the second current transformer according to the first current value and the second current value. Specifically, the first current value is taken as the target current, and the deviation between the second current value and the first current value is calculated. When the second current value is greater than the target current, the driving device is controlled to drive the magnetic core of the second current transformer to rotate in a clockwise direction to reduce the magnetic flux of the second current transformer; when the second current value is less than the target current, the driving device is controlled to drive the magnetic core of the second current transformer to rotate in a counterclockwise direction to increase the magnetic flux of the second current transformer. The output voltage is kept stable, and the power of each power supply circuit is consistent, so that the service life of the intelligent gateway device is balanced.

[0110] In one embodiment, Figure 5 As shown, the step of controlling the driving device to adjust the magnetic flux of the second current transformer according to the first current value and the second current value includes:

[0111] S150, when the second current value is greater than the first current value, controlling the driving device to reduce the magnetic flux of the second current transformer;

[0112] S160: When the second current value is less than the first current value, control the driving device to increase the magnetic flux of the second current transformer.

[0113] The above-mentioned power supply method includes obtaining the current voltage value of the intelligent gateway; wherein the current voltage value is detected by a voltage sensor; when the current voltage value and the preset voltage value are not equal, controlling the driving device to adjust the magnetic flux of the first current transformer; obtaining the first current value and the second current value; wherein the first current value is the current value output by the first current transformer measured by the first current sensor; the second current value is the current value output by the second current transformer measured by the second current sensor; wherein the positive output end of the first current transformer and the positive output end of the second current transformer are both connected to the positive input end of the intelligent gateway, and the negative output ends are both connected to the negative input end of the intelligent gateway; controlling the driving device to adjust the magnetic flux of the second current transformer according to the first current value and the second current value solves the problem that the current of the wire is too small to meet the use of high-power equipment when high-voltage power is drawn, and meets the power demand of high-power intelligent gateway equipment.

[0114] It should be understood that although Figure 4-Figure 5 The steps in the flowchart are shown in sequence as indicated by the arrows, but these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise specified in this document, there is no strict order restriction for the execution of these steps, and these steps can be executed in other orders. Moreover, Figure 4-Figure 5 At least part of the steps may include multiple steps or multiple stages. These steps or stages are not necessarily performed at the same time, but can be performed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed in turn or alternately with other steps or at least part of the steps or stages in other steps.

[0115] In one embodiment, a power supply control device is provided, comprising:

[0116] The voltage value acquisition module is used to obtain the current voltage value of the intelligent gateway; wherein the current voltage value is detected by the voltage sensor;

[0117] A voltage regulating module, used for controlling the driving device to adjust the magnetic flux of the first current transformer when the current voltage value is not equal to the preset voltage value;

[0118] A current value acquisition module, used to acquire a first current value and a second current value; wherein the first current value is a current value output by a first current transformer measured by a first current sensor; and the second current value is a current value output by a second current transformer measured by a second current sensor; wherein the positive output terminal of the first current transformer and the positive output terminal of the second current transformer are both connected to the positive input terminal of the intelligent gateway, and the negative output terminals are both connected to the negative input terminal of the intelligent gateway;

[0119] The current regulating module is used to control the driving device to regulate the magnetic flux of the second current transformer according to the first current value and the second current value.

[0120] In one embodiment, the current regulation module includes:

[0121] A first control module, configured to control the driving device to reduce the magnetic flux of the second current transformer when the second current value is greater than the first current value;

[0122] The second control module is used to control the driving device to increase the magnetic flux of the second current transformer when the second current value is smaller than the first current value.

[0123] For the specific limitations of the power supply control device, please refer to the limitations of the power supply method above, which will not be repeated here. The various modules in the above-mentioned power supply control device can be implemented in whole or in part by software, hardware and a combination thereof. The above-mentioned modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory of the computer device in the form of software, so that the processor can call and execute the operations corresponding to the above modules. It should be noted that the division of modules in the embodiments of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation.

[0124] In one embodiment, a computer readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented:

[0125] Obtain the current voltage value of the smart gateway; wherein the current voltage value is detected by a voltage sensor;

[0126] When the current voltage value is not equal to the preset voltage value, controlling the driving device to adjust the magnetic flux of the first current transformer;

[0127] Obtain a first current value and a second current value; wherein the first current value is a current value output by a first current transformer measured by a first current sensor; and the second current value is a current value output by a second current transformer measured by a second current sensor; wherein the positive output end of the first current transformer and the positive output end of the second current transformer are both connected to the positive input end of the intelligent gateway, and the negative output ends are both connected to the negative input end of the intelligent gateway;

[0128] The driving device is controlled according to the first current value and the second current value to adjust the magnetic flux of the second current transformer.

[0129] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0130] When the second current value is greater than the first current value, controlling the driving device to reduce the magnetic flux of the second current transformer;

[0131] In a case where the second current value is smaller than the first current value, the driving device is controlled to increase the magnetic flux of the second current transformer.

[0132] Those of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory may include read-only memory (ROM), magnetic tape, floppy disk, flash memory or optical memory, etc. Volatile memory may include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM).

[0133] In the description of this specification, the description with reference to the terms "some embodiments", "other embodiments", "ideal embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example.

[0134] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0135] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A power extraction device, characterized in that: It includes a first current transformer, a second current transformer, a first current sensor, a second current sensor, a voltage sensor, a driving device and a control device; the positive output end of the first current transformer and the positive output end of the second current transformer are both connected to the positive input end of the intelligent gateway, and the negative output end of the first current transformer and the negative output end of the second current transformer are both connected to the negative input end of the intelligent gateway; The first current sensor is used to detect a first current value output by the first current transformer; The second current sensor is used to detect a second current value output by the second current transformer; The voltage sensor is used to detect the current voltage value of the smart gateway; The control device is used to obtain the current voltage value, and control the drive device to adjust the magnetic flux of the first current transformer when the current voltage value is not equal to the preset voltage value; It is also used to obtain the first current value and the second current value, and control the driving device to adjust the magnetic flux of the second current transformer according to the first current value and the second current value; wherein the preset voltage value is the rated voltage of the smart gateway; The control device is also used to calculate the deviation of the second current value from the first current value with the first current value as the target current, and to control the driving device to drive the magnetic core of the second current transformer to rotate in a clockwise direction to reduce the magnetic flux of the second current transformer when the second current value is greater than the target current; and to control the driving device to drive the magnetic core of the second current transformer to rotate in a counterclockwise direction to increase the magnetic flux of the second current transformer when the second current value is less than the target current.

2. The power extraction device according to claim 1, characterized in that: Also includes a first wireless transmission circuit and a second wireless transmission circuit; The positive input terminal of the first wireless transmission circuit is connected to the positive output terminal of the first current transformer, and the negative input terminal of the first wireless transmission circuit is connected to the negative output terminal of the first current transformer; The positive input terminal of the second wireless transmission circuit is connected to the positive output terminal of the second current transformer, and the negative input terminal of the second wireless transmission circuit is connected to the negative output terminal of the second current transformer; The positive output end of the first wireless transmission circuit and the positive output end of the second wireless transmission circuit are both connected to the positive input end of the intelligent gateway, and the negative output end of the first wireless transmission circuit and the negative output end of the second wireless transmission circuit are both connected to the negative input end of the intelligent gateway.

3. The power extraction device according to claim 2, characterized in that: The number of the second wireless transmission circuits is equal to the number of the second current transformers, and they are connected in a one-to-one correspondence.

4. The power extraction device according to claim 2, characterized in that: Also includes a first rectifier circuit, a second rectifier circuit, a third rectifier circuit and a fourth rectifier circuit; The first input end of the first rectifier circuit is connected to the positive output end of the first current transformer, the second input end of the first rectifier circuit is connected to the negative output end of the first current transformer, the positive output end of the first rectifier circuit is connected to the positive input end of the first wireless transmission circuit, and the negative output end of the first rectifier circuit is connected to the negative input end of the first wireless transmission circuit; The first input end of the third rectifier circuit is connected to the positive output end of the second current transformer, the second input end of the third rectifier circuit is connected to the negative output end of the second current transformer, the positive output end of the third rectifier circuit is connected to the positive input end of the second wireless transmission circuit, and the negative output end of the third rectifier circuit is connected to the negative input end of the second wireless transmission circuit; The first input end of the second rectifier circuit is connected to the positive output end of the first wireless transmission circuit, and the second input end of the second rectifier circuit is connected to the negative output end of the first wireless transmission circuit; The first input end of the fourth rectifier circuit is connected to the positive output end of the second wireless transmission circuit, and the second input end of the fourth rectifier circuit is connected to the negative output end of the second wireless transmission circuit; The positive output end of the second rectifier circuit and the positive output end of the fourth rectifier circuit are both connected to the positive input end of the intelligent gateway, and the negative output end of the second rectifier circuit and the negative output end of the fourth rectifier circuit are both connected to the negative input end of the intelligent gateway.

5. The power extraction device according to claim 4, characterized in that: Also includes a first voltage stabilizing circuit, a second voltage stabilizing circuit, a third voltage stabilizing circuit and a fourth voltage stabilizing circuit; The first end of the first voltage stabilizing circuit is connected to the positive output end of the first rectifier circuit, and the second end of the first voltage stabilizing circuit is connected to the negative output end of the first rectifier circuit; The first end of the third voltage stabilizing circuit is connected to the positive output end of the third rectifier circuit, and the second end of the third voltage stabilizing circuit is connected to the negative output end of the third rectifier circuit; The first end of the second voltage stabilizing circuit and the first end of the fourth voltage stabilizing circuit are both connected to the positive input end of the intelligent gateway, and the second end of the second voltage stabilizing circuit and the second end of the fourth voltage stabilizing circuit are both connected to the negative input end of the intelligent gateway.

6. The power extraction device according to claim 5, characterized in that: Also includes a first inverter circuit and a second inverter circuit; The first input end of the first inverter circuit is connected to the first end of the first voltage stabilizing circuit, the second input end of the first inverter circuit is connected to the second end of the first voltage stabilizing circuit, the first output end of the first inverter circuit is connected to the positive input end of the first wireless transmission circuit, and the second output end of the first inverter circuit is connected to the negative input end of the first wireless transmission circuit; The first input end of the second inverter circuit is connected to the first end of the three voltage regulator circuits, the second end of the second inverter circuit is connected to the second end of the third voltage regulator circuit, the first output end of the second inverter circuit is connected to the positive input end of the second wireless transmission circuit, and the second output end of the second inverter circuit is connected to the negative input end of the second wireless transmission circuit.

7. The power extraction device according to claim 6, characterized in that: Also includes a first protection circuit and a second protection circuit; The first end of the first protection circuit is connected to the positive output end of the first current transformer, and the second end of the first protection circuit is connected to the negative output end of the first current transformer; The first end of the second protection circuit is connected to the positive output end of the second current transformer, and the second end of the second protection circuit is connected to the negative output end of the second current transformer.

8. A method for obtaining electricity, characterized in that: Includes steps: Obtaining a current voltage value of the intelligent gateway; wherein the current voltage value is detected by a voltage sensor; When the current voltage value and the preset voltage value are not equal, controlling the driving device to adjust the magnetic flux of the first current transformer; wherein the preset voltage value is the rated voltage of the smart gateway; Obtain a first current value and a second current value; wherein the first current value is a current value output by the first current transformer measured by a first current sensor; and the second current value is a current value output by the second current transformer measured by a second current sensor; wherein the positive output end of the first current transformer and the positive output end of the second current transformer are both connected to the positive input end of the intelligent gateway, and the negative output end of the first current transformer and the negative output end of the second current transformer are both connected to the negative input end of the intelligent gateway; Controlling the driving device to adjust the magnetic flux of the second current transformer according to the first current value and the second current value includes: taking the first current value as the target current, calculating the deviation between the second current value and the first current value, and when the second current value is greater than the target current, controlling the driving device to drive the magnetic core of the second current transformer to rotate in a clockwise direction to reduce the magnetic flux of the second current transformer; and when the second current value is less than the target current, controlling the driving device to drive the magnetic core of the second current transformer to rotate in a counterclockwise direction to increase the magnetic flux of the second current transformer.

9. A power taking control device, characterized in that: include: A voltage value acquisition module is used to acquire the current voltage value of the intelligent gateway; wherein the current voltage value is detected by a voltage sensor; A voltage regulating module, used for controlling the driving device to adjust the magnetic flux of the first current transformer when the current voltage value is not equal to the preset voltage value; wherein the preset voltage value is the rated voltage of the smart gateway; A current value acquisition module, used to acquire a first current value and a second current value; wherein the first current value is a current value output by the first current transformer measured by a first current sensor; and the second current value is a current value output by the second current transformer measured by a second current sensor; wherein the positive output end of the first current transformer and the positive output end of the second current transformer are both connected to the positive input end of the intelligent gateway, and the negative output end of the first current transformer and the negative output end of the second current transformer are both connected to the negative input end of the intelligent gateway; a current regulating module, configured to control the driving device to regulate the magnetic flux of the second current transformer according to the first current value and the second current value; The current regulating module includes: a first control module and a second control module; wherein the first control module is used to control the driving device to reduce the magnetic flux of the second current transformer when the second current value is greater than the first current value; the second control module is used to control the driving device to increase the magnetic flux of the second current transformer when the second current value is less than the first current value.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to claim 8 are implemented.

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