CN112968640A - High-voltage electricity taking device and method based on adjustable air gap - Google Patents
High-voltage electricity taking device and method based on adjustable air gap Download PDFInfo
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- CN112968640A CN112968640A CN202110196490.7A CN202110196490A CN112968640A CN 112968640 A CN112968640 A CN 112968640A CN 202110196490 A CN202110196490 A CN 202110196490A CN 112968640 A CN112968640 A CN 112968640A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P13/00—Arrangements for controlling transformers, reactors or choke coils, for the purpose of obtaining a desired output
- H02P13/10—Arrangements for controlling transformers, reactors or choke coils, for the purpose of obtaining a desired output by moving core, coil winding, or shield, e.g. by induction regulator
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F29/00—Variable transformers or inductances not covered by group H01F21/00
- H01F29/08—Variable transformers or inductances not covered by group H01F21/00 with core, coil, winding, or shield movable to offset variation of voltage or phase shift, e.g. induction regulators
- H01F29/10—Variable transformers or inductances not covered by group H01F21/00 with core, coil, winding, or shield movable to offset variation of voltage or phase shift, e.g. induction regulators having movable part of magnetic circuit
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
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Abstract
The application relates to a high-voltage electricity taking device and method based on adjustable air gaps, wherein the high-voltage electricity taking device comprises: the device comprises a current transformer, a voltage sensor and a controller; the current transformer comprises two semicircular magnetic cores, one ends of the two semicircular magnetic cores are movably connected, and the other ends of the two semicircular magnetic cores are disconnected to form an air gap; the current transformer and the voltage sensor are both connected with the controller; the current transformer is used for acquiring electric energy from the high-voltage transmission line to supply power to a load; the voltage sensor is used for acquiring voltage signals at two ends of the load; and the controller is used for controlling the width of the air gap according to the voltage signal at the two ends of the load so as to adjust the voltage at the two ends of the load. The technical scheme that this application embodiment provided can improve the reliability of high pressure electricity of getting and improve the stability of intelligent monitoring equipment operation.
Description
Technical Field
The application relates to the technical field of high-voltage equipment, in particular to a high-voltage electricity taking device and method based on adjustable air gaps.
Background
In order to better monitor and manage the operation condition of the power grid in real time, various intelligent monitoring devices are generally required to be erected at the high-voltage transmission line end, but because the high-voltage transmission line has the inherent high-voltage grade characteristic, the power supply mode at the low-voltage side cannot meet the power consumption requirement of the intelligent monitoring devices at the high-voltage transmission line end.
In order to realize power supply to the intelligent monitoring equipment at the high-voltage transmission line end, at present, a high-voltage power taking technology based on a current transformer is generally adopted, electric energy is obtained from a high-voltage transmission line through the current transformer, and then the electric energy is converted into a stable voltage source to supply power to the intelligent monitoring equipment.
However, in the existing high-voltage electricity taking technology based on the current transformer, when the current of the high-voltage transmission line is too large or too small, the reliability of electricity taking is low, so that the intelligent monitoring equipment is difficult to stably operate.
Disclosure of Invention
Based on this, the embodiment of the application provides a high-voltage electricity taking device and method based on adjustable air gap and a storage medium, which can improve the reliability of high-voltage electricity taking and improve the stability of intelligent monitoring equipment operation.
First aspect provides a get device based on air gap adjustable high pressure, should get device based on air gap adjustable high pressure includes:
the device comprises a current transformer, a voltage sensor and a controller; the current transformer comprises two semicircular magnetic cores, one ends of the two semicircular magnetic cores are movably connected, and the other ends of the two semicircular magnetic cores are disconnected to form an air gap; the current transformer and the voltage sensor are both connected with the controller; the current transformer is used for acquiring electric energy from the high-voltage transmission line to supply power to a load; the voltage sensor is used for acquiring voltage signals at two ends of the load; and the controller is used for controlling the width of the air gap according to the voltage signal at the two ends of the load so as to adjust the voltage at the two ends of the load.
In one embodiment, the high-voltage power taking device based on the adjustable air gap further comprises a motor, and the motor is respectively connected with the current transformer and the controller; and the motor is used for driving one of the magnetic cores to rotate so as to control the width of the air gap and adjust the voltage at two ends of the load.
In one embodiment, the high-voltage power taking device based on the adjustable air gap further comprises movable connecting rods, and the movable connecting rods are respectively connected with the motor and one of the magnetic cores; and the motor is used for driving one of the magnetic cores to rotate through the movable connecting rod.
In one embodiment, the high-voltage electricity taking device based on the adjustable air gap further comprises a coupler, and the coupler is used for connecting one ends of the two semicircular magnetic cores.
In one embodiment, the controller is configured to compare the collected voltages at the two ends of the load with a preset voltage threshold, and drive the magnetic core to rotate in a first direction through the motor to adjust the voltages at the two ends of the load if the voltages at the two ends of the load are greater than the preset voltage threshold; if the voltage at the two ends of the load is smaller than the preset voltage threshold value, the magnetic core is driven to rotate along the second direction through the motor so as to adjust the voltage at the two ends of the load.
In one embodiment, the high-voltage electricity taking device based on the adjustable air gap further comprises an analog-to-digital converter; the analog-to-digital converter is respectively connected with the voltage sensor and the controller; and the analog-to-digital converter is used for converting the voltage signals at two ends of the load into digital signals.
In one embodiment, the high-voltage power taking device based on the adjustable air gap further comprises a rectifying module and a voltage stabilizing module, wherein the rectifying module is respectively connected with the current transformer and the voltage stabilizing module; the voltage stabilizing module is also connected with a load; the rectification module is used for rectifying the output current of the current transformer; and the voltage stabilizing module is used for stabilizing the voltage at two ends of the load.
In one embodiment, the high-voltage power taking device based on the adjustable air gap further comprises a protection circuit; the protection circuit is respectively connected with the current transformer and the rectification module; and the protection circuit is used for protecting the rectifying module and the voltage stabilizing module.
In a second aspect, a high-voltage power taking method based on adjustable air gap is provided, and the method is applied to the high-voltage power taking device based on adjustable air gap as in the first aspect, and the method includes:
acquiring voltage signals at two ends of a load; and controlling the width of the air gap of the magnetic core according to the acquired voltage signals at the two ends of the load so as to adjust the voltage at the two ends of the load.
In one embodiment, controlling the width of the air gap of the magnetic core according to the acquired voltage signal across the load to adjust the voltage across the load includes:
comparing the acquired voltage at two ends of the load with a preset voltage threshold; if the voltage at the two ends of the load is greater than the preset voltage threshold value, the magnetic core is driven to rotate along a first direction through the motor so as to adjust the voltage at the two ends of the load; if the voltage at the two ends of the load is smaller than the preset voltage threshold value, the magnetic core is driven to rotate along the second direction through the motor so as to adjust the voltage at the two ends of the load.
In a third aspect, a computer-readable storage medium is provided, on which a computer program is stored, which computer program, when being executed by a processor, is adapted to carry out the method steps of any of the embodiments of the second aspect described above.
The high-voltage power taking device, the method and the storage medium based on the adjustable air gap comprise that: the device comprises a current transformer, a voltage sensor and a controller; the current transformer comprises two semicircular magnetic cores, one ends of the two semicircular magnetic cores are movably connected, and the other ends of the two semicircular magnetic cores are disconnected to form an air gap; the current transformer and the voltage sensor are both connected with the controller; the current transformer is used for acquiring electric energy from the high-voltage transmission line to supply power to a load; the voltage sensor is used for acquiring voltage signals at two ends of the load; and the controller is used for controlling the width of the air gap according to the voltage signal at the two ends of the load so as to adjust the voltage at the two ends of the load. In the technical scheme provided by the embodiment of the application, because the width of two semicircular magnetic core air gaps can be controlled according to the voltage at two ends of the load, the electric energy acquired by the current transformer is changed due to the change of the air gap width, so that the voltage at two ends of the load can be timely adjusted, the voltage at two ends of the load can be stabilized when the current of a high-voltage power transmission line is too large or too small, the reliability of high-voltage power taking is improved, and the running stability of intelligent monitoring equipment is improved.
Drawings
Fig. 1 is a block diagram of a high-voltage power taking device based on adjustable air gap provided in an embodiment of the present application;
fig. 2 is a block diagram of a high-voltage power taking device based on adjustable air gap provided in an embodiment of the present application;
fig. 3 is a block diagram of a high-voltage power taking device based on adjustable air gap provided in an embodiment of the present application;
fig. 4 is a block diagram of a high-voltage power taking device based on adjustable air gap provided in an embodiment of the present application;
fig. 5 is a block diagram of a high-voltage power taking device based on adjustable air gap provided in an embodiment of the present application;
fig. 6 is a block diagram of a high-voltage power taking device based on adjustable air gap provided in an embodiment of the present application;
fig. 7 is a circuit structure diagram of a high-voltage power taking device based on adjustable air gap according to an embodiment of the present application;
fig. 8 is a flowchart of a high-voltage power taking method based on adjustable air gap provided in the embodiment of the present application;
fig. 9 is a flowchart of a high-voltage power taking method based on adjustable air gaps provided in an embodiment of the present application.
Detailed Description
To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
With the development of power systems and the complexity of power transmission lines, monitoring equipment of high-voltage power transmission lines is applied deeply, but due to the inherent high-voltage class characteristic of the high-voltage power transmission lines and the high requirements on electrical insulation, the traditional low-voltage side power supply mode cannot meet the power consumption requirements of high-voltage electrical equipment. Therefore, the high-voltage electricity taking technology is rapidly developed, wherein the traditional CT electricity taking mode based on the current transformer is most widely applied.
However, in the wide variation range of the current of the high-voltage transmission line, the scheme has obvious limitations in implementation, for example, when the current of the transmission line is low, the electric energy obtained by the current transformer is not enough to drive the monitoring equipment, in this case, a large magnetizing inductance needs to be generated in the current transformer, which increases the mass and the size of the magnetic core, and the number of turns of the secondary winding needs to be increased; when the current of the power transmission line is continuously increased, the large current obtained by the current transformer can damage a circuit system and monitoring equipment, at the moment, partial electric energy obtained by the current transformer needs to be consumed by itself through the discharge circuit, and the energy obtaining efficiency of the high-voltage power obtaining device based on the adjustable air gap is greatly reduced due to the loss of extra power. Meanwhile, the magnetic core of the power-taking transformer can be rapidly saturated by the overlarge current of the power transmission line, and the current transformer can be irreversibly damaged due to heating of the magnetic core.
In order to solve the problems in the prior art, the invention provides a high-voltage electricity taking device and method based on adjustable air gaps.
In an embodiment, please refer to fig. 1, which illustrates a block diagram of an air gap adjustable-based high voltage power taking apparatus provided in an embodiment of the present application, and as shown in fig. 1, the air gap adjustable-based high voltage power taking apparatus 10 includes a current transformer 11, a voltage sensor 12, and a controller 13; the current transformer 11 comprises two semicircular magnetic cores, one ends of the two semicircular magnetic cores are movably connected, and the other ends of the two semicircular magnetic cores are disconnected to form an air gap; the current transformer 11 and the voltage sensor 12 are both connected with the controller 13; the current transformer 11 is used for acquiring electric energy from the high-voltage transmission line to supply power to a load; the voltage sensor 12 is used for acquiring voltage signals at two ends of a load; and a controller 13 for controlling the width of the air gap according to the voltage signal across the load to adjust the voltage across the load.
The current transformer 11 obtains electric energy from the high-voltage transmission line and supplies power to a load, and the current transformer 11 can obtain the electric energy from the high-voltage transmission line. The current transformer 11 comprises two semicircular magnetic cores, one ends of the two semicircular magnetic cores are movably connected, and the other ends of the two semicircular magnetic cores are separately formed into an air gap, wherein one ends of the two semicircular magnetic cores can be movably connected through a movable connecting device, for example, a coupler connection, a roller connection, a hinge connection, and the like.
The voltage sensor 12 may be connected across the load, the voltage sensor 12 may collect voltage signals across the load and send the collected voltage signals to the controller 13, and the controller 13 may control the widths of the air gaps of the two semicircular magnetic cores according to the voltage signals to adjust the voltage across the load. When the voltages at the two ends of the load are adjusted, the controller 13 may analyze and determine the collected voltages at the two ends of the load to control the width of the magnetic core air gap, for example, the controller 13 may control the width of the magnetic core air gap through a motor, or may enable the two semicircular magnetic cores to be opened and closed by arranging an insulating spring in the middle of the magnetic core air gap, so as to control the width of the magnetic core air gap, or may control the width of the magnetic core air gap through other devices, which is not specifically limited in this embodiment.
When controller 12 carries out analysis and judgment to the voltage of gathering, can compare with predetermined voltage threshold, can also compare with the voltage variation range value of the normal work of predetermined load, again according to the width of two semicircular magnetic core air gaps among the comparative result control current transformer 11, with the voltage at adjustment load both ends, the width of two semicircular magnetic core air gaps can change the width of magnetic core air gap through the rotation of one of them magnetic core, the rotation of magnetic core can be through mobilizable device and magnetic core fixed connection after, thereby drive the magnetic core and rotate, thereby the width of adjustment magnetic core air gap.
In this embodiment, the high-voltage power taking device based on the adjustable air gap comprises a current transformer, a voltage sensor and a controller; the current transformer comprises two semicircular magnetic cores, one ends of the two semicircular magnetic cores are movably connected, and the other ends of the two semicircular magnetic cores are disconnected to form an air gap; the current transformer and the voltage sensor are both connected with the controller; the current transformer acquires electric energy from the high-voltage transmission line to supply power to a load; the voltage sensor collects voltage signals at two ends of a load; the controller controls the width of the air gap according to the voltage signal at the two ends of the load so as to adjust the voltage at the two ends of the load. Because the width of the air gaps of the two semicircular magnetic cores can be controlled according to the voltage at the two ends of the load, the electric energy acquired by the current transformer can be changed due to the change of the width of the air gaps, so that the voltage at the two ends of the load can be adjusted in time, the voltage at the two ends of the load can be stabilized when the current of the high-voltage power transmission line is too large or too small, the reliability of high-voltage power taking is improved, and the running stability of the intelligent monitoring equipment is improved.
In an embodiment, please refer to fig. 2, which shows a block diagram of a high voltage power taking device based on adjustable air gap provided in an embodiment of the present application, as shown in fig. 2, the high voltage power taking device 10 based on adjustable air gap further includes a motor 21, and the motor 21 is connected to the current transformer 11 and the controller 13 respectively; and the motor 21 is used for driving one of the magnetic cores to rotate so as to control the width of the air gap and adjust the voltage at two ends of the load.
The high-voltage power taking device 10 with the adjustable air gap further comprises a motor 21, the motor 21 serving as a rotatable device can be fixedly connected with one of the magnetic cores of the current transformer 11, the rotation of the motor 21 can drive the magnetic core to rotate, the motor 21 can adopt a control motor such as a stepping motor, a servo motor and the like, when the motor 21 is fixedly connected with one of the magnetic cores, an intermediate connecting device and a fixed connecting device can be adopted for connection, the intermediate connecting device is used for connecting the motor 21 with one of the magnetic cores, and for example, the intermediate connecting device can be a link mechanism; the fixed connecting device is used for fixing the middle connecting device and one of the magnetic cores, for example, the fixed connecting device may be a movable joint, a screw rod, or the like, and the motor 21 may drive one of the magnetic cores to rotate to control the width of the air gap, so as to adjust the voltage across the load.
In this embodiment, drive one of them magnetic core through the motor and rotate the width that comes control air gap to the voltage at adjustment load both ends, control mode is simple convenient.
In an embodiment, please continue to refer to fig. 2, which shows a block diagram of a high-voltage power-taking device based on adjustable air gap provided in an embodiment of the present application, as shown in fig. 2, the high-voltage power-taking device 10 based on adjustable air gap further includes movable connecting rods 31, and the movable connecting rods 21 are respectively connected to the motor 21 and one of the magnetic cores; and the motor 21 is used for driving one of the magnetic cores to rotate through the movable connecting rod 31.
As shown in fig. 3, fig. 3 shows a structural schematic diagram that the motor drives the magnetic cores to rotate according to the embodiment of the present application, the motor 21 is connected to one of the magnetic cores through the movable connecting rod 31, and a contact point between the movable connecting rod 31 and the magnetic core may be fixedly connected through a movable joint in the opening, so that the movable connecting rod 31 can drive one of the magnetic cores to rotate by rotation of the motor 21.
In this embodiment, couple together motor and one of them magnetic core through movable connecting rod to can drive one of them magnetic core and rotate, simplify control mode, convenient easy operation.
In an embodiment, please refer to fig. 2 continuously, which shows a block diagram of a high voltage power-taking device based on adjustable air gap provided in an embodiment of the present application, as shown in fig. 2, the high voltage power-taking device 10 based on adjustable air gap further includes a coupler 41, and the coupler 41 is used for connecting one end of two semicircular magnetic cores, please refer to fig. 3 continuously. The coupling 41 may connect one ends of the two semicircular magnetic cores, and the coupling 41 may be a gear coupling, a chain coupling, a universal coupling, or the like.
In one embodiment, the controller 13 is configured to compare the collected voltages at the two ends of the load with a preset voltage threshold, and drive the magnetic core to rotate in a first direction through the motor to adjust the voltages at the two ends of the load if the voltages at the two ends of the load are greater than the preset voltage threshold; if the voltage at the two ends of the load is smaller than the preset voltage threshold value, the magnetic core is driven to rotate along the second direction through the motor so as to adjust the voltage at the two ends of the load.
Because the controller 13 needs enough current of the high-voltage transmission line for starting, in order to provide electric energy to the load more quickly based on the high-voltage power taking device with the adjustable air gap, when the controller 13 is not started, the motor is set to be in a magnetic core closed state by default, namely, the two semicircular magnetic cores have no air gap, so as to obtain the maximum magnetic flux. After the operating voltage of the controller 13 is reached, the controller 13 can operate normally. After the controller 13 is operating normally, the controller 12 may compare the collected voltage across the load with a preset voltage threshold, where the preset voltage threshold may include an upper limit voltage and a lower limit voltage of the load operating voltage.
If the voltage at the two ends of the load is greater than the preset voltage threshold, which may be that the collected voltage at the two ends of the load is greater than the upper limit voltage of the working voltage of the load, the motor 21 drives the magnetic core to rotate along the first direction, so that the width of the air gap of the magnetic core of the current transformer is increased until the voltage at the two ends of the load reaches the normal working voltage, wherein if the magnetic core connected with the motor 21 is a semicircular magnetic core at the primary side (i.e., the high-voltage transmission line side) of the current transformer, the first direction is clockwise; if the core connected to the motor 21 is a semicircular core on the secondary side of the current transformer (i.e., on the side of the energy-extracting coil), the first direction is counterclockwise.
If the voltage at the two ends of the load is smaller than the preset voltage threshold value, which may be that the collected voltage at the two ends of the load is smaller than the lower limit voltage of the working voltage of the load, the motor 21 drives the magnetic core to rotate along the second direction, so that the width of the air gap of the magnetic core of the current transformer is reduced until the voltage at the two ends of the load reaches the normal working voltage, wherein if the magnetic core connected with the motor 21 is a semicircular magnetic core at the primary side (i.e., the high-voltage transmission line side) of the current transformer, the second direction is the counterclockwise direction; if the core connected to the motor 21 is a semicircular core on the secondary side of the current transformer (i.e., on the side of the power take-off coil), the second direction is clockwise.
When the controller 13 controls the motor 21 to rotate, the motor 21 may be controlled by outputting a Pulse Width Modulation (PWM) control signal, the controller 13 may output a corresponding PWM control signal according to a deviation value between a voltage at two ends of the load and a preset voltage threshold, and the motor 21 rotates according to a duty ratio of the PWM control signal, so as to drive the magnetic core to rotate to control a Width of an air gap of the magnetic core, so as to adjust the voltage at two ends of the load.
In the embodiment, the collected voltages at the two ends of the load are compared with the preset voltage threshold, the width of the air gap of the magnetic core is controlled according to the comparison result, and the voltages at the two ends of the load are adjusted in time, so that the stability of the voltages at the two ends of the load is ensured.
In an embodiment, please refer to fig. 4, which shows a block diagram of a high voltage power-taking device based on adjustable air gap provided in an embodiment of the present application, and as shown in fig. 4, the high voltage power-taking device 10 based on adjustable air gap further includes an analog-to-digital converter 51; the analog-to-digital converter 51 is respectively connected with the voltage sensor 12 and the controller 13; an analog-to-digital converter 51 for converting the voltage signal across the load into a digital signal.
The voltage signal collected by the voltage sensor 12 is an analog signal, and the analog-to-digital converter 51 can convert the collected voltage signal into a digital signal, so that the controller 13 can perform operation processing on the collected voltage signal.
In an embodiment, please refer to fig. 5, which shows a block diagram of a high voltage power taking apparatus based on adjustable air gap provided in an embodiment of the present application, as shown in fig. 5, the high voltage power taking apparatus 10 based on adjustable air gap further includes a rectifying module 61 and a voltage stabilizing module 62, where the rectifying module 61 is connected to the current transformer 11 and the voltage stabilizing module 62 respectively; the voltage regulation module 62 is also connected to a load; the rectifying module 61 is used for rectifying the output current of the current transformer 11; and a voltage stabilization module 62 for stabilizing the voltage across the load.
The rectifying module 61 is connected to the current transformer 11 and the voltage stabilizing module 62, the voltage stabilizing module 62 is further connected to a load, the rectifying module 61 may be a bridge rectifier, and the bridge rectifier may be composed of four rectifying diodes VD1, VD2, VD3 and VD4, and is configured to rectify an alternating current output by a coil of the current transformer 11. The voltage-stabilizing module 62 may be composed of a voltage-stabilizing capacitor C2Is composed of a voltage-stabilizing capacitor C2And the output end of the rectifier bridge and the load are connected in parallel respectively for stabilizing the voltage at two ends of the load.
In an embodiment, please refer to fig. 6, which shows a block diagram of a high voltage power taking device based on adjustable air gap provided in the present application, and as shown in fig. 6, the high voltage power taking device 10 based on adjustable air gap further includes a protection circuit 71; the protection circuit 71 is respectively connected with the current transformer 11 and the rectifying module 61; and a protection circuit 71 for protecting the rectifying module 61 and the voltage stabilizing module 62.
The protection circuit 71 is connected with the current transformer 11 and the rectifying module 61 respectively, can protect the rectifying module 61 and the Voltage stabilizing module 62, and the protection circuit 71 can be composed of a Transient Voltage Suppressor (TVS), wherein the TVS is connected in parallel with the coil output of the current transformer 11, and when a high-Voltage transmission line generates a large current due to a fault, an over-high Voltage generated by a high-Voltage electricity-taking device based on adjustable air gaps can break down the TVS to form a loop, so that the subsequent circuit is prevented from being damaged by the high Voltage.
In an embodiment, referring to fig. 7, fig. 7 shows a circuit structure diagram of a high voltage power taking apparatus based on an adjustable air gap according to an embodiment of the present application, where a resonant capacitor C1 may be connected in series with a top secondary side coil, so that a secondary side forms a resonant circuit, and the circuit structure diagram includes modules in the foregoing embodiments.
The high-voltage power taking method based on the adjustable air gap can be applied to a high-voltage power taking device based on the adjustable air gap, and the technical scheme and how to solve the technical problems are specifically described in detail through embodiments and with reference to the accompanying drawings. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments. It should be noted that, in the high-voltage power taking method based on adjustable air gap provided by the present application, the main executing body in fig. 8 to 9 is a high-voltage power taking device based on adjustable air gap.
In an embodiment, please refer to fig. 8, which shows a flowchart of a high voltage electricity taking method based on adjustable air gap provided in an embodiment of the present application, where the method may include the following steps:
And step 802, controlling the width of the air gap of the magnetic core according to the acquired voltage signals at the two ends of the load so as to adjust the voltage at the two ends of the load.
The implementation principle and the beneficial effect of the high-voltage power-taking method based on the adjustable air gap provided by the embodiment can refer to the limitations of the embodiments of the high-voltage power-taking device based on the adjustable air gap, and are not described herein again.
In an embodiment, please refer to fig. 9, which shows a flowchart of a high voltage power-taking method based on adjustable air gap provided in an embodiment of the present application, where the embodiment relates to a process of adjusting a voltage across a load, and the method may include the following steps:
And 902, if the voltages at the two ends of the load are greater than the preset voltage threshold value, driving the magnetic core to rotate along the first direction through the motor so as to adjust the voltages at the two ends of the load.
And 903, if the voltage at the two ends of the load is smaller than the preset voltage threshold, driving the magnetic core to rotate along the second direction through the motor so as to adjust the voltage at the two ends of the load.
The implementation principle and the beneficial effect of the high-voltage power-taking method based on the adjustable air gap provided by the embodiment can refer to the limitations of the embodiments of the high-voltage power-taking device based on the adjustable air gap, and are not described herein again.
It should be understood that although the various steps in the flow charts of fig. 8-9 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least some of the steps in fig. 8-9 may include multiple steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, which are not necessarily performed in sequence, but may be performed in turn or alternately with other steps or at least some of the other steps.
In an embodiment of the application, a computer-readable storage medium is provided, on which a computer program is stored, which computer program, when being executed by a processor, carries out the steps of:
acquiring voltage signals at two ends of a load; and controlling the width of the air gap of the magnetic core according to the acquired voltage signals at the two ends of the load so as to adjust the voltage at the two ends of the load.
In one embodiment, the computer program when executed by the processor further performs the steps of:
comparing the acquired voltage at two ends of the load with a preset voltage threshold; if the voltage at the two ends of the load is greater than the preset voltage threshold value, the magnetic core is driven to rotate along a first direction through the motor so as to adjust the voltage at the two ends of the load; if the voltage at the two ends of the load is smaller than the preset voltage threshold value, the magnetic core is driven to rotate along the second direction through the motor so as to adjust the voltage at the two ends of the load.
The implementation principle and technical effect of the computer-readable storage medium provided by this embodiment are similar to those of the above-described method embodiment, and are not described herein again.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in the embodiments provided herein may include non-volatile and/or volatile memory, among others. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above examples only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A high-voltage electricity taking device based on adjustable air gaps is characterized by comprising a current transformer, a voltage sensor and a controller; the current transformer comprises two semicircular magnetic cores, one ends of the two semicircular magnetic cores are movably connected, and the other ends of the two semicircular magnetic cores are disconnected to form an air gap; the current transformer and the voltage sensor are both connected with the controller;
the current transformer is used for acquiring electric energy from the high-voltage transmission line to supply power to a load;
the voltage sensor is used for acquiring voltage signals at two ends of the load;
and the controller is used for controlling the width of the air gap according to the voltage signals at the two ends of the load so as to adjust the voltage at the two ends of the load.
2. The air gap adjustable-based high-voltage power taking device according to claim 1, further comprising a motor, wherein the motor is connected with the current transformer and the controller respectively;
and the motor is used for driving one of the magnetic cores to rotate so as to control the width of the air gap and adjust the voltage at two ends of the load.
3. The air gap adjustable-based high-voltage power taking device according to claim 2, further comprising a movable connecting rod, wherein the movable connecting rod is respectively connected with the motor and the one of the magnetic cores;
the motor is used for driving one of the magnetic cores to rotate through the movable connecting rod.
4. The air gap adjustable-based high-voltage power taking device according to claim 1, further comprising a coupler, wherein the coupler is used for connecting one ends of the two semicircular magnetic cores.
5. The high-voltage power taking device based on adjustable air gap according to any one of claims 1 to 4,
the controller is used for comparing the collected voltages at the two ends of the load with a preset voltage threshold, and if the voltages at the two ends of the load are greater than the preset voltage threshold, the magnetic core is driven to rotate along a first direction through the motor so as to adjust the voltages at the two ends of the load; and if the voltages at the two ends of the load are smaller than the preset voltage threshold value, the magnetic core is driven to rotate along a second direction through the motor so as to adjust the voltages at the two ends of the load.
6. The air gap adjustable-based high-voltage power taking device according to claim 1, further comprising an analog-to-digital converter; the analog-to-digital converter is respectively connected with the voltage sensor and the controller;
and the analog-to-digital converter is used for converting the voltage signals at two ends of the load into digital signals.
7. The air gap adjustable-based high-voltage power taking device according to claim 1, further comprising a rectifying module and a voltage stabilizing module, wherein the rectifying module is respectively connected with the current transformer and the voltage stabilizing module; the voltage stabilizing module is also connected with the load;
the rectification module is used for rectifying the output current of the current transformer;
and the voltage stabilizing module is used for stabilizing the voltage at two ends of the load.
8. The air gap adjustable-based high-voltage power taking device according to claim 7, further comprising a protection circuit; the protection circuit is respectively connected with the current transformer and the rectification module;
the protection circuit is used for protecting the rectifying module and the voltage stabilizing module.
9. The high-voltage power taking method based on the adjustable air gap is applied to the high-voltage power taking device based on the adjustable air gap according to any one of claims 1 to 8, and comprises the following steps:
acquiring voltage signals at two ends of a load;
and controlling the width of the air gap of the magnetic core according to the acquired voltage signals at the two ends of the load so as to adjust the voltage at the two ends of the load.
10. The high-voltage power taking method based on adjustable air gap according to claim 9, wherein the controlling the width of the air gap of the magnetic core according to the obtained voltage signal at the two ends of the load to adjust the voltage at the two ends of the load comprises:
comparing the acquired voltage at two ends of the load with a preset voltage threshold;
if the voltage at the two ends of the load is greater than the preset voltage threshold value, the magnetic core is driven to rotate along a first direction through the motor so as to adjust the voltage at the two ends of the load;
and if the voltages at the two ends of the load are smaller than the preset voltage threshold value, the magnetic core is driven to rotate along a second direction through the motor so as to adjust the voltages at the two ends of the load.
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