CN114337323A - Get electric installation and electric power shaft tower - Google Patents
Get electric installation and electric power shaft tower Download PDFInfo
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- CN114337323A CN114337323A CN202111648345.4A CN202111648345A CN114337323A CN 114337323 A CN114337323 A CN 114337323A CN 202111648345 A CN202111648345 A CN 202111648345A CN 114337323 A CN114337323 A CN 114337323A
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Abstract
The embodiment of the invention provides a power taking device and an electric power tower, which comprise: the power taking module and the rectifying module; the power taking module is coupled with the alternating power line and generates alternating current under the action of an alternating magnetic field generated by the alternating power line; the input end of the rectifying module is connected with the output end of the power taking module, the rectifying module is used for rectifying alternating current generated by the power taking module, and the output end of the rectifying module is connected with the load module and used for supplying power to the load module. The embodiment of the invention also provides an electric power tower which comprises the power taking device. According to the embodiment of the invention, only voltage is needed to be on the alternating power line, and the electricity taking device can take electricity from the alternating power line to supply power to the low-power load equipment on the power tower. The power supply device has the advantages of low maintenance cost and long service life, is suitable for load equipment with low electric energy demand and long power supply duration, and can supply power to the load equipment arranged at all positions of the electric power tower.
Description
Technical Field
The embodiment of the invention relates to the technical field of electric power, in particular to a power taking device and an electric power tower.
Background
In the long-term operation process of the electric tower, the environment is severe, and the electric tower is blown by wind and is exposed to the sun. The tower contains load devices for different purposes that require low voltage power to maintain their proper operation. For example, in coastal areas with severe corrosion environments, metal structures such as steel bars in tower foundations of some towers inevitably cause corrosion problems, and a cathodic protection method is needed to electrify the metal of the power tower so as to inhibit metal corrosion.
The power supply mode for the load equipment on the power tower mainly comprises the following steps: and autonomous energy taking and power transmission. There are many ways to obtain energy autonomously, for example, the battery supplies power, but the battery needs to be replaced by power failure at regular time; the current coil supplies power, energy is obtained from load current, but if load equipment is on the power tower, the load equipment which is transmitted to the power tower after energy is obtained faces a plurality of high-voltage problems; solar energy and wind energy are used for supplying power, the storage battery is needed to be matched, however, the influence of environmental factors is large, the safety and the power supply stability are influenced when extreme weather such as strong wind, overcast and rainy, dust and dirt and the like is met, in addition, the service life of the storage battery is limited, and the storage battery cannot bear lower environmental temperature.
Disclosure of Invention
The embodiment of the invention provides a power taking device and an electric tower, and aims to solve the problems of short service life, high manufacturing cost and high maintenance frequency of the anti-corrosion power taking device.
In a first aspect, an embodiment of the present invention provides an electricity taking device, including: the power taking module and the rectifying module;
the power taking module is coupled with the alternating power line and generates alternating current under the action of an alternating magnetic field generated by the alternating power line;
the input end of the rectifying module is connected with the output end of the power taking module, the rectifying module is used for rectifying the alternating current generated by the power taking module, and the output end of the rectifying module is connected with the load module and used for supplying power to the load module.
In a second aspect, an embodiment of the present invention further provides an electric tower, including the power taking device according to the first aspect.
The embodiment of the invention provides a power taking device, which comprises: the power taking module and the rectifying module; the power taking module is coupled with the alternating power line and generates alternating current under the action of an alternating magnetic field generated by the alternating power line; the input end of the rectifying module is connected with the output end of the power taking module, the rectifying module is used for rectifying alternating current generated by the power taking module, and the output end of the rectifying module is connected with the load module and used for supplying power to the load module. According to the embodiment of the invention, only voltage is needed to be on the alternating power line, and the electricity taking device can take electricity from the alternating power line to supply power to the low-power load equipment on the power tower. The power supply device has the advantages of low maintenance cost and long service life, is suitable for load equipment with low electric energy demand and long power supply duration, and can supply power to the load equipment arranged at all positions of the electric power tower.
Drawings
Fig. 1 is a block diagram of a power-taking device according to a first embodiment of the present invention;
fig. 2 is a circuit diagram of a power-taking device according to a first embodiment of the present invention;
fig. 3 is a structural block diagram of an electric tower according to a second embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature. Furthermore, the terms "first" and "second" are used merely for descriptive purposes and are not intended to have any special meaning.
Example one
Fig. 1 is a block diagram of a power-taking device according to an embodiment of the present invention, and as shown in fig. 1, the power-taking device may specifically include a power-taking module 101 and a rectifying module 102.
The power taking module 101 is coupled with the alternating power line, and the power taking module 101 generates an alternating current under the action of an alternating magnetic field generated by the alternating power line.
In power transmission, an alternating power line is required to transmit power, and an overhead alternating power line is composed of a line tower, an alternating power line, an insulator, a line fitting, a stay wire, a tower foundation, a grounding device and the like.
The magnitude and direction of the magnetic field generated by the alternating current can change along with time according to a certain rule. Therefore, an alternating magnetic field exists in the vicinity of the alternating electric field lines.
The power taking module 101 is coupled with the alternating power line, and when the voltage of the alternating power line changes, the power taking module 101 generates an alternating current along with the change of the voltage of the alternating power line, so that active energy taking in the voltage of the alternating power line is realized.
Moreover, the energy taking module 101 is not arranged on the alternating power line, and when the energy taking module 101 is installed, the alternating power line does not need to be powered off, so that the installation convenience and flexibility are improved.
In some embodiments of the present invention, the power taking module 101 includes:
the inductive electrode 1011 is coupled to the alternating electric field lines to form a first capacitor 1012, and the inductive electrode 1011 generates an alternating current under the action of an alternating magnetic field generated by the alternating electric field lines.
The principle of electromagnetic induction is that a conductor placed in a changing magnetic flux generates an electromotive force. This electromotive force is called induced electromotive force or induced electromotive force, and when the conductor is closed in a loop, the electromotive force drives electrons to flow, and an induced current is formed.
The inductive electrode 1011 is coupled to the alternating power line, and the inductive electrode 1011 generates an alternating current under the action of an alternating magnetic field generated by the alternating power line. The inductive electrode 1011 and the alternating power line together form a first capacitor 1012, so that the first capacitor 1012 can draw power from the alternating power line.
In some embodiments of the present invention, the sensing electrode 1011 is a powered metal rod.
The inductive electrode 1011 is a power-taking metal rod as a conductor, and generates an alternating current in an alternating magnetic field. The electricity-taking metal rod is slender in shape, small in occupied space and similar to the structure of a tower body and a tower head on the electric power tower, so that when workers carry out high-altitude operation on the electric power tower, the electricity-taking metal rod cannot cause potential safety hazards to the operation of the workers.
It should be noted that the sensing electrode in the above embodiments is an electrically conductive metal rod, which is an exemplary illustration of the embodiments of the present invention, and in other embodiments of the present invention, the sensing electrode may also have other different forms, such as a metal plate, and the present invention is not limited herein.
In the second capacitor 1013, a first electrode of the second capacitor 1013 is connected to the sensing electrode 1011, and a second electrode of the second capacitor 1013 is grounded.
The first electrode of the second capacitor 1013 is connected to the sensing electrode 1011, and the second electrode of the second capacitor 1013 is connected to ground, so that the first capacitor 1012 and the second capacitor 1013 form a current loop, and the first capacitor 1012 can obtain an alternating current from an alternating voltage line.
The input terminal of the rectifying module 102 is connected to the first electrode of the second capacitor 1013, and the ground terminal of the rectifying module 102 is connected to the second electrode of the second capacitor 1013.
The input terminal of the rectifying module 102 is connected to the first electrode of the second capacitor 1013, and the ground terminal of the rectifying module 102 is connected to the second electrode of the second capacitor 1013, so that the electric energy of the second capacitor 1013 can be transmitted to the rectifying module 102. Meanwhile, the energy storage effect of the second capacitor 1013 can protect the rectifier module 102 to some extent, and prevent the rectifier module 102 from being damaged by the instantaneous alternating current.
The input end of the rectifying module 102 is connected with the output end of the power taking module 101, the rectifying module 102 is used for rectifying the alternating current generated by the power taking module 101, and the output end of the rectifying module 102 is connected with the load module and used for supplying power to the load module.
The input end of the rectifying module 102 is connected to the output end of the power taking module 101, and is configured to rectify the alternating current generated by the power taking module 101, so that the alternating current is converted into a unidirectional pulsating direct current.
The output end of the rectifying module 102 is connected to the load module, and is configured to input the rectified pulsating direct current into the load module to supply power to the load module.
In some embodiments of the present invention, the rectifier module 102 comprises: a bridge rectifier circuit 1021 and a filter capacitor 1022.
The input end of the bridge rectifier circuit 1021 is connected to the output end of the power taking module 101, and is configured to convert the alternating current into a pulsating direct current.
The load module needs unidirectional direct current power supply to meet the requirement of the current load module on power supply current. The input end of the bridge rectifier circuit 1021 is connected to the output end of the power-taking module 101, and converts the alternating current obtained from the power-taking rectifier module 101 into a pulsed dc power supply.
It should be noted that the bridge rectifier circuit in the above embodiment is an exemplary illustration of a circuit for rectification in the embodiment of the present invention, and in other embodiments of the present invention, there may be other different rectifier circuits to rectify an alternating current, and a rectifier circuit such as a single diode rectifier circuit, a center-tapped rectifier circuit, etc. is selected according to a requirement that a required pulsating direct current is a half-wave or a full-wave, and the present invention is not limited herein.
A first electrode of the filter capacitor 1022 is connected to an output end of the bridge rectifier circuit 1021, a second electrode of the filter capacitor 1022 is grounded, and the filter capacitor 1022 is configured to filter the pulsating dc current to obtain a load current.
A first electrode of the filter capacitor 1022 is connected to an output terminal of the bridge rectifier circuit 1021, and a second electrode of the filter capacitor 1022 is grounded, so as to filter the pulsating dc current, so as to reduce an ac pulsating ripple factor, improve an efficient smooth dc output, and obtain a filtered load current.
In some embodiments of the present invention, the filter capacitor 1022 also serves to protect the load module from damage caused by transient current generated by the alternating magnetic field.
The filter capacitor 1022 is disposed behind the rectifying circuit, and can also protect the load module, so as to prevent the load module from being damaged due to instantaneous current generated by the alternating current.
It should be noted that, in other embodiments of the present invention, other different protection circuits may be further disposed to protect the load module, and the present invention is not limited herein.
In some embodiments of the invention, the rectifier module further comprises: a first switch 1023 and a second switch 1024.
A first end of the first switch 1023 is connected to the output end of the bridge rectifier circuit 1021, and a second end of the first switch 1023 is connected to the first electrode of the filter capacitor 1022, so as to control whether the circuit between the bridge rectifier circuit 1021 and the filter capacitor 1022 is connected.
The first switch is arranged between the bridge circuit 1021 and the filter capacitor 1022 to control whether the circuit between the bridge rectification circuit and the filter capacitor is communicated or not, so that the inspection and replacement of the device are conveniently carried out when a worker inspects the power taking device.
A first end of the second switch 1024 is connected to the first electrode of the filter capacitor 1022, and a second end of the second switch 1024 is connected to the load module, so as to control whether the circuit between the filter capacitor 1024 and the load module is communicated.
The second switch setting is between filter capacitor 1022 and load module to whether the circuit between control filter capacitor and the load module communicates, is convenient for inspect the device when the staff patrols and examines the electricity-taking device and change, and get the electricity-taking device uninterruptedly and get the ability from the alternating power line, when the load module need carry out the electroless operation, the staff only need break off the second switch and can carry out the electroless operation to the load module, improves the flexibility of operation.
In some embodiments of the invention, the load module may be a foundation metal structure of an electric power tower to protect the foundation metal structure from corrosion.
The foundation of the electric power tower generally comprises a concrete foundation and a steel structure foundation, and the metal structure of the tower foundation of the electric power tower is easily corroded due to the fact that underground water contains various chemical components and the influence of the environment and soil around the electric power tower foundation. Particularly, in areas with high salt content in coastal water and industrial waste infiltration areas in industrial areas, the corrosion of the tower foundation metal structure is more serious. When the tower footing metal structure is corroded and rusted, the resistance of the grounding resistor is seriously influenced.
For example, the load module may be a tower foundation metal structure of an electric power tower, the energy obtaining device generates an alternating current under the action of an alternating magnetic field generated by an alternating power line, the load current generated after the alternating current is rectified supplies power to the tower foundation metal structure of the electric power tower, and a cathode protection method is used.
It should be noted that, the load module in the above embodiment is a tower footing metal structure of an electric tower, which is an exemplary illustration of the embodiment of the present invention, in other embodiments of the present invention, the load module may also have other different compositions, and the present invention is not limited herein.
In some embodiments of the present invention, the power-taking device further includes a protective cover 103 disposed outside the rectification module 102 for protecting the rectification module 102.
The outside of the power taking device further comprises a protective cover 103 which can protect the rectifier module 102, prevent components in the rectifier module 102 from falling or being damaged due to weather reasons such as typhoon and rainstorm and is beneficial to prolonging the service life of the power taking device. Illustratively, the protective cover 103 may be a plastic box.
It should be noted that the protection cover 103 for protecting the rectifier module 102 in the above embodiment is an exemplary illustration of the embodiment of the present invention, and in other embodiments of the present invention, the rectifier module 102 may also be protected in different other different manners, which is not limited herein.
It should be noted that the device embodiments are described as a series of combination of elements for simplicity, but those skilled in the art should understand that the embodiments of the present invention are not limited by the described elements, because some elements may be replaced by other elements according to the embodiments of the present invention. Furthermore, those skilled in the art will appreciate that the embodiments described in this specification are presently preferred and that no such embodiment is essential to the practice of the invention.
The embodiment of the invention provides a power taking device, which comprises: the power taking module and the rectifying module; the power taking module is coupled with the alternating power line and generates alternating current under the action of an alternating magnetic field generated by the alternating power line; the input end of the rectifying module is connected with the output end of the power taking module, the rectifying module is used for rectifying alternating current generated by the power taking module, and the output end of the rectifying module is connected with the load module and used for supplying power to the load module. According to the embodiment of the invention, only voltage is needed to be on the alternating power line, and the electricity taking device can take electricity from the alternating power line to supply power to the low-power load equipment on the power tower. The power supply device has the advantages of low maintenance cost and long service life, is suitable for load equipment with low electric energy demand and long power supply duration, and can supply power to the load equipment arranged at all positions of the electric power tower.
Example two
Fig. 3 is a structural block diagram of an electric power tower according to a second embodiment of the present invention, which may specifically include the power taking device 100 according to the first embodiment.
As shown in fig. 3, the power supply device of embodiment 1 is included in the power tower, and is configured to generate an alternating current under the action of an alternating magnetic field generated by an alternating power line, and the alternating current is processed to supply dc power to other load modules on the power tower. The power taking device 100 is suitable for the power supply requirements of load modules with low electric energy requirements and long duration on power towers, such as the corrosion prevention requirements of a power tower base metal structure. The power taking device 100 has long service life and low maintenance cost.
In some embodiments of the present invention, the inductive electrode 1011 is disposed at the tower head portion of the power tower 201.
The inductive electrode 1011 is disposed at the tower head of the power tower 201, and is easy to generate an alternating current under the action of an alternating magnetic field generated by the alternating power line. The tower head part of the electric power tower is close to the alternating power line, the density of the magnetic induction lines is denser, the potential energy generated by the potential energy of the electricity-taking metal pole is larger, and the obtained current can be ensured to be used by the load module.
It should be noted that the inductive electrode 1011 in the above embodiment is disposed at the tower head part of the power tower 201 to exemplify the embodiment of the present invention, and in other embodiments of the present invention, the inductive electrode 1011 may also be disposed at other different positions, such as the tower body and the tower top of the power tower, and the present invention is not limited herein.
In the description herein, it is to be understood that the terms "upper", "lower", "left", "right", and the like are used in a descriptive sense or positional relationship based on the orientation or positional relationship shown in the drawings for convenience in description and simplicity of operation, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the present invention.
In the description herein, references to the description of "an embodiment," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be appropriately combined to form other embodiments as will be appreciated by those skilled in the art.
The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.
Claims (10)
1. The utility model provides a get electric installation which characterized in that includes: the power taking module and the rectifying module;
the power taking module is coupled with the alternating power line and generates alternating current under the action of an alternating magnetic field generated by the alternating power line;
the input end of the rectifying module is connected with the output end of the power taking module, the rectifying module is used for rectifying the alternating current generated by the power taking module, and the output end of the rectifying module is connected with the load module and used for supplying power to the load module.
2. The device of claim 1, wherein the power-taking module comprises:
the induction electrode is coupled with the alternating power line to form a first capacitor, and the induction electrode generates alternating current under the action of an alternating magnetic field generated by the alternating power line;
a first electrode of the second capacitor is connected with the induction electrode, and a second electrode of the second capacitor is grounded;
the input end of the rectifying module is connected with the first electrode of the second capacitor, and the grounding end of the rectifying module is connected with the second electrode of the second capacitor.
3. The apparatus of claim 2, wherein the induction electrode is an electrically powered metal rod.
4. The apparatus of any of claims 1-3, wherein the rectification module comprises: a bridge rectifier circuit and a filter capacitor;
the input end of the bridge rectifier circuit is connected with the output end of the power taking module and is used for converting the alternating current into pulsating direct current;
the first electrode of the filter capacitor is connected with the output end of the bridge rectifier circuit, the second electrode of the filter capacitor is grounded, and the filter capacitor is used for filtering the pulsating direct current to obtain load current.
5. The apparatus of claim 4, wherein the filter capacitor is further configured to protect the load module from damage caused by transient current generated by the alternating magnetic field.
6. The apparatus of claim 4, wherein the rectification module further comprises: a first switch, a second switch;
the first end of the first switch is connected with the output end of the bridge rectifier circuit, and the second end of the first switch is connected with the first electrode of the filter capacitor and used for controlling whether the circuit between the bridge rectifier circuit and the filter capacitor is communicated or not;
and the first end of the second switch is connected with the first electrode of the filter capacitor, and the second end of the second switch is connected with the load module and used for controlling whether a circuit between the filter capacitor and the load module is communicated or not.
7. The apparatus of claim 1, wherein the load module is a foundation metal structure of an electric power tower to protect the foundation metal structure from corrosion.
8. The apparatus of claim 1, further comprising:
and the protective cover is arranged outside the rectifying module and used for protecting the rectifying module.
9. An electric tower, characterized in that it comprises the electricity-taking device as claimed in any one of claims 1 to 8.
10. The electric tower as claimed in claim 9, wherein the inductive electrode is disposed at a tower head portion of the electric tower.
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| CN202111648345.4A CN114337323A (en) | 2021-12-30 | 2021-12-30 | Get electric installation and electric power shaft tower |
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