CN115313286A - Electromagnetically-driven power line deicing device and deicing signal generation method - Google Patents
Electromagnetically-driven power line deicing device and deicing signal generation method Download PDFInfo
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- CN115313286A CN115313286A CN202210880826.6A CN202210880826A CN115313286A CN 115313286 A CN115313286 A CN 115313286A CN 202210880826 A CN202210880826 A CN 202210880826A CN 115313286 A CN115313286 A CN 115313286A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/16—Devices for removing snow or ice from lines or cables
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Abstract
The invention provides an electromagnetically-driven electric power line deicing device and a deicing signal generation method, and relates to the technical field of deicing and deicing of electric transmission lines. The deicing device has good output characteristic, is convenient for remote automatic control, and can be adjusted according to the structural parameters and icing thickness of different lines. The method for generating the deicing signal converts the control signal determined according to the deicing impact load characteristic into a deicing electric quantity signal, controls the energy supply component to supply electric quantity to the electromagnetic ejection component, and enables the electromagnetic ejection component to generate accelerated motion to impact the icing conductor.
Description
Technical Field
The invention relates to the technical field of deicing and ice melting of power transmission lines, in particular to an electromagnetically-driven power line deicing device and a deicing signal generation method.
Background
In order to cope with ice and snow disasters threatening the operation of a power transmission line, various methods for melting ice and removing ice on the line are available at present. Among them, large-current ice melting has become the mainstream method for large-scale ice melting of power transmission lines at long distance. However, the research on the rapid mechanical deicing technology for the power transmission line and the power distribution line which are in the micro-terrain microclimate section and are locally and severely iced is less, on one hand, the power transmission line and the power distribution line are widely distributed, the situation that the local severe icing is possibly generated in part of the sections, the icing of other sections is thinner or no icing occurs, the ground wire is usually grounded, and a mature deicing scheme is not available at present, so that the ground wire becomes the weakest link of the power transmission line, and therefore, the scheme of large-current full-line deicing is not suitable. On the other hand, the existing fixed and mobile ice melting devices have the defects of large size, heavy weight, high price and the like, a plurality of power transmission and distribution lines are in a micro-terrain microclimate area which is easy to be covered with ice, and are not suitable for the transportation of large ice melting devices, and the field power supply problem of various ice removing schemes is difficult to solve, so that the power transmission lines and the power distribution lines mainly adopt an artificial ice removing mode, but the existing artificial ice removing mode is low in efficiency and high in danger. At the moment, the efficient and portable mechanical deicing device has unique advantages and provides effective technical support for coping with ice disasters of the power transmission and distribution lines.
The main current mechanical deicing modes include manual knock deicing, robotic deicing, and vibratory deicing. The quebec water and electricity bureau of canada has developed a cartridge-activated de-icer that can initiate de-icing by detonating an internally mounted empty cartridge that applies an impact load to a ground wire. The device has successfully carried out actual deicing operation to the actual circuit through the trial and error, and is respond well.
The existing impact type mechanical deicing device has the following two disadvantages: (1) The existing impact type mechanical deicing device depends on gunpowder as a power source, the gunpowder is strictly controlled in China, the storage and transportation of the gunpowder have safety risks, and the large-area popularization is difficult; (2) The active impact load is applied to a circuit in the mechanical deicing process, the lead or the ground wire is greatly vibrated, the impact force of gunpowder is not easy to realize accurate control, if the parameter setting of the impact load in the deicing process is improper or the design of the operation rules of deicing operation is unreasonable, the tower wire system is possibly seriously damaged in the deicing process, and if the impact force is too large, the strand breakage and the breakage of the lead or the ground wire can be caused; the overhead line may cause the mutual impact of the lead wire and the ground wire or the impact of the insulator string on the tower to damage the tower in the process of large amplitude vibration. These adverse effects may present a safety hazard to impulse de-icing.
Disclosure of Invention
In order to solve the problems that the impact force of the existing impact type mechanical deicing device is difficult to realize accurate control and potential safety hazards exist, the invention provides an electromagnetic drive power line deicing device, which comprises: the device comprises a controller, an electromagnetic ejection component, an energy supply component and a connecting mechanism;
one end of the connecting mechanism is connected with the ice-coated conducting wire, and the other end of the connecting mechanism is connected with the energy supply component; the connecting mechanism is of a hollow structure, and the electromagnetic ejection component is arranged in the hollow part of the connecting mechanism;
the electromagnetic ejection component, the energy supply component and the controller are electrically connected;
the controller is in communication connection with the control device and used for converting a control signal acquired by the control device into an electric quantity signal and controlling the energy supply component to supply electric quantity to the electromagnetic ejection component based on the electric quantity signal, so that the electromagnetic ejection component generates accelerated motion to impact the ice-coated conducting wire to remove the ice coating.
Preferably, the electromagnetic ejection part comprises an electromagnetic coil and an electromagnetic core rod which are coaxially arranged, and the electromagnetic core rod is positioned in the electromagnetic coil; the electromagnetic coil is electrically connected with the energy supply part.
Preferably, the energy supply component comprises a capacitance component and an energy storage component; one end of the electromagnetic coil is electrically connected with the capacitor component, and the other end of the electromagnetic coil is electrically connected with the energy storage component;
the controller is respectively electrically connected with the capacitor component and the energy storage component and is used for controlling the energy storage component to supply electric quantity to the capacitor component and controlling the capacitor component to release the electric quantity to the electromagnetic coil so as to enable the electromagnetic core rod to generate accelerated motion.
Preferably, the connecting mechanism comprises a shell and a line card, the shell is provided with a mounting hole, and an orifice of the mounting hole faces the ice-coated wire.
Preferably, the electromagnetic coil is fixed to an inner wall of the mounting hole in an axial direction of the mounting hole.
Preferably, the deicing device further comprises an impact member; the impact component is positioned in the mounting hole and between the ice-coated wire and the electromagnetic ejection component.
Preferably, the striking member includes a striking portion and a piston connected to each other; the piston is located in the mounting hole, is adjacent to the electromagnetic ejection component and has a certain distance with the electromagnetic ejection component, and the distance is smaller than an impact distance generated by accelerated motion of the electromagnetic ejection component.
Preferably, the impact part comprises a connecting part and an impact block, one end of the connecting part is connected with the impact block, and the other end of the connecting part is connected with the piston; the impact block is U-shaped, the U-shaped groove faces the ice-coated conducting wire, and the bottom of the groove is attached to the ice-coated conducting wire.
Preferably, the wire clamp is of a straight line structure, the bending part of the straight line structure is used for clamping the ice-coated conducting wire, and the other end of the straight line structure is fixed to the side, close to the power line, of the hole of the shell.
Preferably, the deicing device further comprises a base box; the connecting mechanism is connected with the base box; the energy supply component and the controller are both located in the base box.
Preferably, the deicing device further comprises a spring; one end of the spring is connected to the bottom of the mounting hole, and the other end of the spring is connected with the electromagnetic core rod.
Based on the same invention idea, the invention also provides a method for generating a deicing electric quantity signal of the power line, and the controller in the power line deicing device provided by the invention is utilized to generate the deicing electric quantity signal according to the following method:
acquiring a control signal sent by a control device;
converting the control signal into the deicing electric quantity signal by using the controller based on the control signal;
wherein the control signal is obtained based on de-icing impact load characteristics; the deicing impact load characteristic is obtained by utilizing a pre-constructed power transmission tower line model; the pre-constructed power transmission tower line model is a model constructed by a finite element analysis method based on an induced deicing mechanism.
Preferably, the converting, by the controller, the control signal into the deicing electric quantity signal includes: and converting the control signal into the deicing electric quantity signal by using the controller according to the relation between the current characteristic and the electric quantity characteristic of the deicing device.
Based on the same invention idea, the invention also provides a deicing system for the power line, which is characterized by comprising a control device and a power line deicing device; the control device is electrically connected or in communication connection with the power line deicing device; the control device is used for obtaining a control signal by utilizing a pre-constructed power transmission tower line model based on the obtained power line parameters and sending the control signal to the deicing device;
the power line deicing device is the power line deicing device provided by the invention;
and converting the control signal into an electric quantity signal by using a controller of the deicing device, and controlling an energy supply part of the deicing device to supply electric quantity to an electromagnetic ejection part of the deicing device based on the electric quantity signal so that the electromagnetic ejection part generates accelerated motion to impact the ice-coated conducting wire to remove the ice coating.
Preferably, the control device comprises a calculation module and a signal conversion module; the calculation module is used for obtaining current characteristics by utilizing the pre-constructed power transmission tower line model based on the power line parameters; the signal conversion module is used for converting the current characteristic into the control signal.
Preferably, the control means comprises at least one or more of: control panel, computer, digital-to-analog converter and signal transmitter.
Based on the same invention idea, the invention also provides an acquisition method of the deicing impact load characteristic of the power line, and the acquisition method comprises the following steps:
acquiring parameters of a power line;
based on the parameters, carrying out numerical simulation on the impact load required by deicing by using a pre-constructed power transmission tower line model to obtain the deicing impact load characteristic;
the pre-constructed power transmission tower line model is constructed based on an induced de-icing mechanism and by adopting a finite element analysis method.
Preferably, the performing numerical simulation on the impact load required for deicing by using a pre-constructed power transmission tower line model based on the parameters to obtain the deicing impact load characteristic includes:
based on the parameters, carrying out numerical simulation on the impact load required by deicing by using the pre-constructed power transmission tower line model to obtain an initial impact load characteristic;
performing numerical simulation on the dynamic response of the power circuit based on the initial impact load characteristic and the influence of the change of the parameter on the dynamic response to obtain the dynamic response characteristic of the power circuit;
optimizing the initial impact load characteristic based on the dynamic response characteristic to obtain the deicing impact load characteristic.
Preferably, the parameters include: the step length, the height difference, the voltage grade, the wire parameter, the ice coating type and the ice coating thickness of the power line.
Based on the same invention idea, the invention further provides a computer device, comprising: one or more processors; the processor to store one or more programs; when the one or more programs are executed by the one or more processors, the method for generating the deicing electric quantity signal of the power line provided by the invention is realized.
Based on the same inventive concept, the present invention further provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed, the method for generating a deicing electric quantity signal of an electric power line provided by the present invention is implemented.
Compared with the prior art, the invention has the following beneficial effects:
(1) According to the electromagnetically-driven power line deicing device, the control signal is converted into the electric quantity signal required by deicing through the controller, the electric quantity signal is used for controlling the charging quantity of the energy storage component to the capacitor component, and the electromagnetic ejection component is controlled to generate a certain electromagnetic force to serve as an impact driving force to perform line deicing operation.
(2) According to the method for generating the deicing electric quantity signal of the power line, the control signal determined according to the deicing impact load characteristic is converted into the deicing electric quantity signal, the energy supply component is controlled to supply electric quantity to the electromagnetic ejection component based on the electric quantity signal, the electromagnetic ejection component generates accelerated motion to impact the icing conductor, and icing is removed.
The invention provides a deicing system of an electric power line and an acquisition method of deicing impact load characteristics of the electric power line, wherein a power transmission tower line model is established by adopting a finite element analysis method based on an induced deicing mechanism, impact loads required by deicing of the electric power line with different structures and icing thicknesses are determined based on the power transmission tower line model, the impact loads are converted into electric quantity through a deicing device, and an electromagnetic ejection component of the deicing device is controlled to generate accelerated motion impact force so as to remove the icing; therefore, the impact load required by the invention can be accurately calculated for power lines with different structures and icing thicknesses, remote deicing control is carried out, and the accuracy and the safety of the impact type deicing method are greatly improved.
Drawings
FIG. 1 is a schematic diagram of an electromagnetically driven deicer for an electrical power line according to the present invention;
fig. 2 is a schematic flow chart of a method for generating a deicing electric quantity signal of an electric power line according to the present invention;
FIG. 3 is a schematic flow chart of a method for obtaining a deicing impact load characteristic of an electric power line according to the present invention;
reference numerals are as follows: 1. icing the wire; 2. a line card; 3. an impact block; 4. a piston; 5. a housing; 6. an electromagnetic coil; 7. an electromagnetic core rod; 8. a capacitive component; 9. a controller; 10. an energy storage component; 11. mounting holes; 12. a base box; 13. a connecting portion; 14. an electromagnetic ejection member; 15. a connecting mechanism; 16. and an energy supply component.
Detailed Description
Example 1:
the embodiment provides an electromagnetic drive power line deicing device, which comprises a controller 9, an electromagnetic ejection component 14, an energy supply component 16 and a connecting mechanism 15; the controller 9 is in communication connection with the control device; one end of the connecting mechanism 15 is connected with the ice coating conducting wire, and the other end is connected with the energy supply component 16; the connecting mechanism 15 is a hollow structure, and the electromagnetic ejection component 14 is arranged in the connecting mechanism 15; the electromagnetic ejection component 14, the energy supply component 16 and the controller 9 are electrically connected; the controller 9 is used for converting the control signal acquired from the control device into an electric quantity signal and controlling the energy supply part 16 to supply electric quantity to the electromagnetic ejection part 14 based on the electric quantity signal, so that the electromagnetic ejection part 14 generates accelerated motion to impact the ice coating conductor to remove the ice coating.
As shown in fig. 1, the connection mechanism comprises a housing 5 and a line card 2, wherein one end of the housing 5 is provided with a mounting hole 11, and the opening of the mounting hole 11 faces the ice-coated wire 1. The line card 2 can be designed to be a 7-shaped structure, the unbent end of the 7-shaped structure is fixed on the orifice side of the shell 5, and the bent part is used for clamping the ice-coated wire 1, so that the relative position of the ice-coated wire 1 and the deicing device is fixed. The line cards 2 can be arranged in 2 numbers and are respectively arranged at two sides of the ice-coated conducting wire 1.
The electromagnetic ejection part 14 comprises an electromagnetic coil 6 and an electromagnetic core rod 7 which are coaxially arranged, the electromagnetic coil 6 is fixed on the inner wall of the mounting hole 11 along the axial direction of the mounting hole 11, and the electromagnetic core rod 7 is positioned in the electromagnetic coil 6. A clamping groove can be arranged on the inner wall of the mounting hole 11, so that the electromagnetic coil 6 is fixed in the clamping groove. The energy supply component 16 comprises a capacitor component 8 and an energy storage component 10, the energy storage component 10 is used for storing electric energy and providing power for the actuation of the electromagnetic ejection component 14, and the energy storage component 10 can be a storage battery. The capacitive part 8 may store an electrical quantity. The electromagnetic coil 6 has one end electrically connected to the capacitor 8 and the other end electrically connected to the energy storage member 10. The controller 9 is electrically connected with the capacitor component 8 and the energy storage component 10 respectively, and is used for controlling the energy storage component 10 to charge the capacitor component 8 and controlling the capacitor component 8 to discharge to the electromagnetic coil 6, so that the electromagnetic coil 6 instantly generates a large current, and the electromagnetic coil 6 further generates an induction magnetic field. The larger the current, the stronger the induced magnetic field. The solenoid 6, the capacitor unit 8, the energy storage unit 10 and the controller 9 form a series circuit. According to the electromagnetic principle, the electromagnetic core rod 7 is subjected to upward thrust in a magnetic field and performs upward accelerated motion, so that the electromagnetic core rod impacts the ice-coated wire 1, and large impact is given to ice coating to promote the ice coating to fall off.
According to the deicing device, the electromagnetic ejection component 14 directly impacts the ice-coated wire 1, or an impact component is arranged between the ice-coated wire 1 and the electromagnetic ejection component 14, the impact component is impacted by the electromagnetic ejection component 14, and then the impact component impacts the ice-coated wire 1. As shown in fig. 1, the impact member includes a connecting portion 13, an impact block 3, and a piston 4. One end of the connecting part 13 is connected with the impact block 3, and the other end is connected with the piston 4. It is also possible to connect the piston 4 directly to the impact block 3. The piston 4 may be cylindrical and mounted inside the housing 5 in the axial direction of the mounting hole 11. The cross section of the connecting portion 13 may be circular, rectangular, square, or the like. The mounting position of the piston 4 in the mounting hole 11 should ensure that the distance between the bottom surface of the piston 4 and the electromagnetic core rod 7 is smaller than the impact distance generated when the electromagnetic core rod 7 moves in an accelerated manner, so as to ensure that the piston 4 can be impacted when the electromagnetic core rod 7 moves in an accelerated manner. The upper portion of the mounting hole 11 may be designed as a stepped hole so that the bottom surface of the piston 4 is seated on the step. As shown in fig. 1, in order to ensure the impact effect, the impact block 3 may be designed in a U shape, and when the ice removing device is installed, the bottom of the U-shaped groove of the impact block 3 is attached to the ice-coated wire 1, so as to increase the contact area between the impact block 3 and the ice-coated wire 1, and prevent the ice-coated wire 1 from being damaged during impact. The U-shaped impact block 3 can ensure that the impact force is completely transmitted to the ice-coated wire 1, so that the impact force is more effective.
The shell 5 of the deicing device can be connected with the energy storage component 10, and a base box 12 can also be arranged, as shown in fig. 1, the bottom of the shell 5 is fixedly connected with the upper part of the base box 12, and the capacitor component 8, the controller 9 and the energy storage component 10 are arranged in the base box 12.
In order to improve the adaptability of the deicing device, a spring for resetting the electromagnetic core rod can be further arranged, one end of the spring is fixedly connected to the bottom of the mounting hole 11, and the other end of the spring is fixedly connected with the electromagnetic core rod 7. After the electromagnetic core rod 7 completes the acceleration movement, the electromagnetic core rod 7 can be pulled back by the elastic force of the spring to reset the electromagnetic core rod so as to prepare for the next impact. Therefore, the installation direction of the deicing device can be adjusted according to the ice coating position, and the application range of the deicing device is expanded.
The process of utilizing the deicing device to deice the power line comprises the following steps:
firstly, a control signal is obtained by using a control device, and the control device can calculate impact load characteristics required by deicing according to data such as structural parameters, icing thickness and the like of a power line, wherein the impact load characteristics comprise the size, the time course and the like of the impact load. The installation position of the deicing device is estimated according to the impact load characteristics, the impact load characteristics are converted into current characteristics of the electric measurement ejection part 14 according to the electromagnetic principle, and the current characteristics are converted into control signals through a digital-to-analog converter.
According to the estimated position of the control device, the deicing device is installed well, if high-altitude line deicing is needed, the guide rope can firstly cross the wire by using a rope throwing device or an unmanned aerial vehicle, then the guide rope is manually pulled, the deicing device is hoisted to the estimated position, the icing wire 1 is clamped by using the wire clamp 2, and the relative position of the icing wire 1 and the deicing device is fixed.
The control device sends a control signal to the controller 9 of the de-icing device, and the sending mode can be wireless transmission so as to facilitate remote control. The controller 9 converts the control signal into an electric quantity signal according to the relationship between the current characteristic and the electric quantity characteristic of the deicing device, controls the energy storage component 10 to supply electric quantity to the capacitor component 8 by using the electric quantity signal, controls the capacitor component 8 to discharge electricity to the electromagnetic coil 6, and further controls the discharge current and the duration time of the capacitor component 8, thereby realizing the accurate control of the impact force of the deicing device.
This power line defroster has the advantage that characteristics of exerting oneself are good, degree of automation is high, strong adaptability, has broken through the not enough of mechanical deicing scheme in the past, provides important support for the structure safety of guarantee easily icing area transmission line, has good application prospect:
(1) Deicing method for ground wire of power transmission line and distribution line
At present, ice melting of a ground wire of a power transmission line is difficult, the ice melting cost of a lead is high, the preparation time is long, the deicing device is suitable for rapidly deicing single-gear or continuous multi-gear power transmission lines in a micro-terrain microclimate section, an actual deicing test shows that the impact type deicing of the deicing device has a good effect of removing the soft ice, and the deicing device has outstanding advantages compared with deicing and other mechanical deicing schemes.
(2) For actively suppressing the galloping of the transmission line
At present, the galloping is fashionable, no active intervention measure exists, the line galloping prevention and control is in a passive situation, the deicing device is easy to be suspended on a line to quickly carry out deicing operation after the line is iced or galloped, and the iced on a ground wire is removed, so that the pneumatic load of the ground wire is changed, the galloping forming condition is damaged, and the purpose of actively inhibiting galloping is achieved.
Example 2:
based on the same invention idea, the embodiment provides a method for generating a deicing electric quantity signal of a power line, and the deicing device in embodiment 1 is applied in the implementation process of the method. As shown in fig. 2, the implementation flow of the method includes: acquiring a control signal sent by a control device; based on the control signal, the control signal is converted into a deicing electric quantity signal by a controller 9 in the deicing device. Wherein the control signal is obtained based on the deicing impact load characteristic; the deicing impact load characteristic is obtained by utilizing a pre-constructed power transmission tower line model; the pre-constructed power transmission tower line model is constructed by adopting a finite element analysis method based on an induced deicing mechanism.
The method can calculate the deicing impact load characteristics under various conditions in advance according to the structural parameters, the icing thickness and the like of the power line, obtain the control signal of the deicing device according to the calculation result, further obtain a deicing electric quantity signal by using the controller 9 of the deicing device, and realize the accurate control of the deicing impact force by using the electric quantity signal.
The specific generation process of the deicing electric quantity signal comprises the following steps:
the control device is used for calculating the impact load characteristic required by deicing according to parameters such as span, height difference, voltage grade, lead or ground wire type, icing type and the like of the power line, and converting the impact load characteristic into the current characteristic of the deicing device by using an electromagnetic principle. The icing type is generally one of rimes, rime mixture and wet snow, and the icing thickness is estimated according to the icing type. The impact load characteristics include the magnitude, time course, etc. of the impact load. The control device converts the current characteristic into a control signal of the deicing device, and selects a proper trigger time according to the deicing process. The control device is electrically or communicatively connected with the deicing device and used for sending a control signal to a controller 9 of the deicing device, and the controller 9 converts the control signal into a deicing electric quantity signal according to the relation between the current characteristic and the required electric quantity characteristic of the deicing device.
Example 3:
based on the same invention concept, the embodiment provides a deicing system for an electric power line, which comprises a control device and the deicing device for the electric power line of embodiment 1; the control device is electrically connected or in communication connection with the power line deicing device; the control device is used for obtaining a control signal by utilizing a pre-constructed power transmission tower line model based on the obtained power line parameters and sending the control signal to the deicing device.
The control device is in communication connection with the deicing device and used for obtaining parameters such as structural parameters and icing thickness of the power line, carrying out simulation calculation on impact load characteristics required by deicing based on the parameters, generating control signals according to the impact load characteristics and sending the control signals to the deicing device.
The control device can be an integrated control platform with the functions or a distributed control system, each functional module works dispersedly and is managed in a centralized way, and the functional modules are connected through electric connection or communication. Each functional module comprises a calculation module, a signal conversion module, a control module and the like. The calculation module comprises a computer and is used for constructing a finite element model of the power transmission line in advance, carrying out numerical simulation calculation on the deicing impact load characteristic through the model based on the parameters of the power line, and converting the impact load characteristic into a current characteristic. The signal conversion module comprises a digital-analog converter and is used for converting the current characteristics into control signals, the control module comprises a control terminal, a signal emitter and the like and is used for data centralized management of each functional module and communication between the functional module and the deicing device, and the deicing scheme can be timely adjusted according to the actual deicing effect.
The deicing system can calculate the impact load characteristic required by deicing in advance through numerical simulation aiming at different line structure parameters and icing thickness, generates a control signal based on the impact load characteristic force, generates an electric quantity signal by the deicing device, realizes the accurate control of the deicing impact load under various conditions, is convenient for the remote control terminal to adjust and optimize the deicing scheme and parameters, has high automation degree, and improves the safety of the deicing operation process.
Example 4:
based on the same inventive concept, this embodiment provides a method for obtaining a deicing impact load characteristic of an electric power line, as shown in fig. 3, an implementation flow of the method includes: obtaining structural parameters, icing thickness and other parameters of the power line; based on the parameters, carrying out numerical simulation on the impact load required by deicing by using a pre-constructed power transmission tower line model to obtain the deicing impact load characteristic; the pre-constructed power transmission tower line model is a model constructed based on an induced deicing mechanism and by adopting a finite element analysis method.
The impact deicing method is a typical mechanical deicing method, and the overhead transmission line is enabled to vibrate greatly by actively introducing an external impact load, so that ice and snow attached to the line are removed. The deicing method applies instantaneous impact load to the power transmission line, causes large vibration of the lead and the ground wires and sudden shedding of the ice coating, and leads the power transmission line system to experience a rapidly changing dynamic process and dynamic response. The transmission tower line model can be used for carrying out simulation calculation on the impact load and the dynamic response of the transmission line in advance, so that the impact load characteristic required by deicing is obtained, and the specific simulation calculation process is as follows:
acquiring parameters of a power line, including span, altitude difference, voltage grade, wire parameters, icing type and icing thickness of the power line; substituting the parameters into a power transmission tower line model, establishing an icing falling judgment criterion based on an icing melting process, and performing numerical simulation on the amplitude and the time course of the impact load required by the power line deicing by using the icing falling judgment criterion to obtain an initial impact load characteristic; numerical simulation calculation is carried out on impact load characteristic changes such as amplitude change, time course and impact load action position change, and the influence of overhead line span and altitude difference change on deicing effect and power response of a power transmission tower line system, so that the power response characteristic of the power transmission tower line system is obtained; and optimizing the initial impact load characteristic and the deicing scheme according to the dynamic response characteristic of the power transmission tower line system, so as to obtain the final amplitude and time-course change characteristic parameters of the deicing impact load. In addition, various technical schemes for inhibiting the overhead line from vibrating greatly in the deicing process can be provided and compared according to the simulation result, and the optimal technical scheme for inhibiting the overhead line from vibrating is selected, so that the structural safety of the power transmission tower line system in the impact type deicing operation process is ensured.
The method for acquiring the deicing impact load characteristic is combined with a transmission tower line system deicing nonlinear finite element analysis method based on an induced deicing mechanism, and a deicing output characteristic and a deicing scheme under various conditions are calculated and optimized in advance through numerical simulation by using a finite element model, so that the working efficiency and the safety of the impact type deicing device are greatly improved.
Example 4:
based on the same inventive concept, the present invention also provides a computer device comprising a processor and a memory for storing a computer program comprising program instructions, the processor being configured to execute the program instructions stored by the computer memory. The Processor may be a Central Processing Unit (CPU), or may be other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field-Programmable gate array (FPGA) or other Programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, etc., which is a computing core and a control core of the terminal, and is specifically adapted to implement one or more instructions, and to load and execute one or more instructions in a computer storage medium, so as to implement a corresponding method flow or a corresponding function, so as to implement the steps of the method for generating the deicing electric quantity Signal of the power line in the above embodiment 2.
Example 5:
based on the same inventive concept, the present invention further provides a storage medium, in particular a computer readable storage medium (Memory), which is a Memory device in a computer device and is used for storing programs and data. It is understood that the computer readable storage medium herein can include both built-in storage media in the computer device and, of course, extended storage media supported by the computer device. The computer-readable storage medium provides a storage space storing an operating system of the terminal. Also, one or more instructions, which may be one or more computer programs (including program code), are stored in the memory space and are adapted to be loaded and executed by the processor. It should be noted that the computer readable storage medium may be a high-speed RAM memory, or a non-volatile memory (non-volatile memory), such as at least one disk memory. One or more instructions stored in a computer-readable storage medium may be loaded and executed by a processor to implement the steps of the method for generating a deicing electric quantity signal for an electric power line in embodiment 2.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The present invention is not limited to the above embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention are included in the scope of the claims of the present invention.
Claims (22)
1. An electromagnetically powered de-icing apparatus for an electrical power line, comprising: the device comprises a controller (9), an electromagnetic ejection component (14), an energy supply component (16) and a connecting mechanism (15);
one end of the connecting mechanism (15) is connected with the ice-coated conducting wire, and the other end of the connecting mechanism is connected with the energy supply component (16); the connecting mechanism (15) is of a hollow structure, and the electromagnetic ejection component (14) is arranged in the hollow part of the connecting mechanism (15);
the electromagnetic ejection component (14), the energy supply component (16) and the controller (9) are electrically connected;
the controller (9) is in communication connection with the control device and is used for converting a control signal acquired from the control device into an electric quantity signal and controlling the energy supply part (16) to supply electric quantity to the electromagnetic ejection part (14) based on the electric quantity signal, so that the electromagnetic ejection part (14) generates accelerated motion to impact the ice coating wire to remove the ice coating.
2. Power line deicing device according to claim 1, characterized in that said electromagnetic ejection member (14) comprises an electromagnetic coil (6) and an electromagnetic core rod (7) arranged coaxially, said electromagnetic core rod (7) being located inside said electromagnetic coil (6); the electromagnetic coil (6) is electrically connected to the energy supply unit (16).
3. Power line de-icing arrangement according to claim 2, characterized in that said energy supply means (16) comprise capacitive means (8) and energy storage means (10); one end of the electromagnetic coil (6) is electrically connected with the capacitor component (8), and the other end of the electromagnetic coil is electrically connected with the energy storage component (10);
the controller (9) is respectively electrically connected with the capacitor component (8) and the energy storage component (10) and is used for controlling the energy storage component (10) to supply electric quantity to the capacitor component (8) and controlling the capacitor component (8) to release the electric quantity to the electromagnetic coil (6) so as to enable the electromagnetic core rod (7) to generate accelerated motion.
4. An electric power line de-icing arrangement according to claim 3, characterised in that said connection means (15) comprise a housing (5) and a line card (2), said housing (5) being provided with a mounting hole (11), the aperture of said mounting hole (11) facing said ice-coated conductor.
5. An electric power line deicing device according to claim 4, characterized in that said electromagnetic coil (6) is fixed to an inner wall of said mounting hole (11) in an axial direction of said mounting hole (11).
6. An electric power line de-icing apparatus as defined in claim 5, wherein said de-icing apparatus further comprises an impact member; the impact part is positioned in the mounting hole (11) and is positioned between the ice-coated wire and the electromagnetic ejection part (14).
7. An electric line de-icing arrangement according to claim 6, characterised in that said striker member comprises a striker and a piston (4) connected to each other; the piston (4) is located in the mounting hole (11), the piston (4) is adjacent to the electromagnetic ejection component (14) and has a certain distance with the electromagnetic ejection component (14), and the distance is smaller than an impact distance generated by accelerated movement of the electromagnetic ejection component (14).
8. An electric line de-icing arrangement according to claim 7, characterised in that said impact portion comprises a connection portion (13) and an impact block (3), said connection portion (13) being connected at one end to said impact block (3) and at the other end to said piston (4).
9. An electric line de-icing arrangement according to claim 8, characterised in that said impact block (3) is U-shaped with a recess facing said ice-coated conductors and with a bottom abutting said ice-coated conductors.
10. The deicing device for electric power lines according to claim 4, wherein said wire clip (2) has a 7-shaped structure, the bent portion of said 7-shaped structure is used for clamping said ice-coated wires, and the other end is fixed to the side of said housing (5) near the opening of the electric power line.
11. An electric power line de-icing arrangement according to claim 1, characterised in that said de-icing arrangement further comprises a base box (12); the connecting mechanism (15) is connected with the base box (12); the energy supply component (16) and the controller (9) are both located in the base box (12).
12. An electric power line de-icing apparatus as defined in claim 4, wherein said de-icing apparatus further comprises a spring; one end of the spring is connected to the bottom of the mounting hole (11), and the other end of the spring is connected with the electromagnetic core rod (7).
13. A method for generating a deicing electric power signal for an electric power line, characterized in that the deicing electric power signal is generated by a controller (9) in an electric power line deicing apparatus according to any one of claims 1 to 12 in the following manner:
acquiring a control signal sent by a control device;
-converting the control signal into the de-icing power signal by means of the controller (9) on the basis of the control signal;
wherein the control signal is obtained based on de-icing impact load characteristics; the deicing impact load characteristic is obtained by utilizing a pre-constructed power transmission tower line model; the pre-constructed power transmission tower line model is a model constructed by a finite element analysis method based on an induced deicing mechanism.
14. The generation method according to claim 13, characterized in that said converting, by means of said controller (9), said control signal into said de-icing electric quantity signal comprises: and converting the control signal into the deicing electric quantity signal by using the controller (9) according to the relation between the current characteristic and the electric quantity characteristic of the deicing device.
15. A deicing system for electric power lines, characterized in that it comprises control means and deicing means for electric power lines; the control device is electrically connected or in communication connection with the power line deicing device; the control device is used for obtaining a control signal by utilizing a pre-constructed power transmission tower line model based on the obtained power line parameters and sending the control signal to the deicing device;
the power line de-icing apparatus of any one of claims 1 to 12;
the control signal is converted into an electric quantity signal by using a controller (9) of the deicing device, an energy supply component (16) of the deicing device is controlled to supply electric quantity to an electromagnetic ejection component (14) of the deicing device based on the electric quantity signal, and the electromagnetic ejection component (14) generates accelerated motion to impact the icing conductor to remove the icing.
16. A deicing system as set forth in claim 15 wherein said control apparatus comprises a calculation module, a signal conversion module; the calculation module is used for obtaining current characteristics by utilizing the pre-constructed power transmission tower line model based on the power line parameters; the signal conversion module is used for converting the current characteristic into the control signal.
17. Deicing system as claimed in claim 15, wherein said control means comprise at least one or more of the following: control panel, computer, digital-to-analog converter and signal transmitter.
18. A method for obtaining deicing impact load characteristics of an electric power line, the method comprising:
acquiring parameters of a power line;
based on the parameters, carrying out numerical simulation on the impact load required by deicing by using a pre-constructed power transmission tower line model to obtain the deicing impact load characteristic;
and the pre-constructed power transmission tower line model is a model constructed based on an induced deicing mechanism and by adopting a finite element analysis method.
19. The method of acquiring according to claim 18, wherein the obtaining the deicing impact load characteristic by numerically simulating an impact load required for deicing using a pre-constructed transmission tower line model based on the parameter comprises:
based on the parameters, carrying out numerical simulation on the impact load required by deicing by using the pre-constructed power transmission tower line model to obtain an initial impact load characteristic;
performing numerical simulation on the dynamic response of the initial impact load characteristic to the power line and the influence of the change of the parameter on the dynamic response to obtain the dynamic response characteristic of the power line;
and optimizing the initial impact load characteristic based on the dynamic response characteristic to obtain the deicing impact load characteristic.
20. The acquisition method of claim 18, wherein the parameters comprise: the step length, the height difference, the voltage grade, the wire parameter, the ice coating type and the ice coating thickness of the power line.
21. A computer device, comprising: one or more processors; the processor to store one or more programs; the one or more programs, when executed by the one or more processors, implement a method of generating a de-icing charge signal for an electrical power line of claim 13 or claim 14.
22. A computer-readable storage medium, having stored thereon a computer program which, when executed, implements a method of generating a de-icing power signal for an electrical power line as claimed in claim 13 or claim 14.
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