CN111725738B - High-voltage line insulator electromagnetic deicing system - Google Patents
High-voltage line insulator electromagnetic deicing system Download PDFInfo
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- CN111725738B CN111725738B CN202010733689.4A CN202010733689A CN111725738B CN 111725738 B CN111725738 B CN 111725738B CN 202010733689 A CN202010733689 A CN 202010733689A CN 111725738 B CN111725738 B CN 111725738B
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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
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/02—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/52—Insulators or insulating bodies characterised by their form having cleaning devices
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/54—Insulators or insulating bodies characterised by their form having heating or cooling devices
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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
- H02J50/20—Circuit arrangements or systems for wireless supply or distribution of electric power using microwaves or radio frequency waves
Abstract
An electromagnetic deicing system for high-voltage line insulators relates to the field of operation and maintenance of power equipment. The problem of how to provide a defroster that does not influence the electric wire netting operation is solved. The device comprises an electromagnetic induction power taking module, a rectifying module, an inverting module, a radio frequency generating module, a detecting module, a control module, a multi-band microwave transmitter, M frequency selection wave-resistance rings and a relay protection module; the M frequency selective wave-blocking rings are divided into N groups; the N groups of frequency selection wave-blocking rings are respectively arranged on N layers of insulating layers of the insulator string; the frequency selective wave-blocking rings on the same insulating layer are used for receiving electromagnetic waves of the same frequency band, the frequency bands of the electromagnetic waves received by the frequency selective wave-blocking rings on different insulating layers are different, the multi-band microwave transmitter radiates electromagnetic waves of a plurality of frequency bands to the frequency selective wave-blocking rings on the insulator string, and each frequency selective wave-blocking ring absorbs electromagnetic energy of the electromagnetic waves of the corresponding frequency band to generate electromagnetic oscillation and generate heat to deice. The deicing device is mainly used for deicing insulators of high-voltage transmission lines.
Description
Technical Field
The invention relates to the field of operation and maintenance of electrical equipment, in particular to a technology for removing ice coated on the surface of a high-voltage line insulator.
Background
China has a world leading ultra-high voltage and extra-high voltage transmission technology, is widely applied to remote electric energy transmission in China, and provides sufficient and stable energy supply for the development of national economy. However, due to special geographical and environmental factors, a plurality of high-voltage transmission lines in China pass through regions with serious accumulated snow and ice coating, and in recent years, a power transmission and transformation system in China has a plurality of serious ice coating disasters, so that the running safety of a power grid is seriously threatened.
Serious icing disasters can cause the line pole tower to collapse due to overweight, and light icing weather can cause the insulator to have icing flashover, and particularly on an extra-high voltage transmission line, the safe operation of a power system can be directly threatened by the faults of the insulator such as icing flashover and even breakdown. Therefore, deicing insulators is an important task in the operation and maintenance of high-voltage lines.
The existing insulator deicing is mainly in modes of mechanical deicing, natural deicing, thermal deicing and the like, however, the modes and the devices need to be overhauled in case of power failure, the normal operation of a power grid is influenced, and the high-voltage overhead line is difficult to mount manually in the weather of ice covered by rain and snow, so that the workload is large and the danger degree is high, and therefore, the deicing work is difficult to perform. Therefore, it is desirable to provide a deicing device that can safely and automatically deice without affecting the operation of the power grid.
Disclosure of Invention
The invention aims to solve the problem of how to provide a deicing device which does not influence the operation of a power grid, and provides an electromagnetic deicing system for a high-voltage line insulator.
An electromagnetic deicing system for a high-voltage line insulator comprises an electromagnetic induction electricity taking module, a rectifying module, an inverting module, a radio frequency generating module, a detecting module, a control module, a multi-band microwave emitter, M frequency selection wave-resistance rings and a relay protection module;
the M frequency selective wave-blocking rings are divided into N groups, and each group comprises one or more frequency selective wave-blocking rings; the N groups of frequency selection wave-blocking rings are respectively arranged on N layers of insulating layers of the insulator string; the frequency selective wave-blocking rings on the same insulating layer are used for receiving electromagnetic waves in the same frequency band, and the frequency bands of the electromagnetic waves received by the frequency selective wave-blocking rings on different insulating layers are different; m is more than N, and M and N are integers;
each frequency selective wave-resisting ring comprises two ring bodies, wherein gaps are formed in the two ring bodies, the included angle of the gaps of the two ring bodies in the direction is A, A is larger than or equal to 120 degrees and smaller than or equal to 240 degrees, the two ring bodies are coaxial and coplanar, and gaps with equal intervals are formed between the two ring bodies;
the detection module is used for detecting the thickness of ice accumulated on the surface of the insulator string and sending a detection result to the control module, and the control module controls the working state of the relay protection module according to the received detection result;
the control module is also used for controlling the working states of the rectification module, the inversion module and the radio frequency generation module;
the electromagnetic induction power taking module is used for taking power from a power transmission line in a power-on state according to an electromagnetic induction principle and transmitting the obtained electric energy to the relay protection module, and an electric energy output end of the relay protection module is connected with an electric energy input end of the rectification module;
the relay protection module is used for detecting the electric energy output by the electromagnetic induction electricity taking module and providing relay protection for the rectification module; when detecting that the electric energy output by the electromagnetic induction electricity taking module generates over-current and/or over-voltage, the relay protection module automatically cuts off and prohibits the electric energy from being output to the rectification module; when the electric energy output by the electromagnetic induction electricity taking module does not generate over-current and/or over-voltage, the relay protection module outputs the electric energy to the rectification module;
the rectification module is used for rectifying the received electric energy and outputting direct current to the inversion module, the inversion module inverts the received direct current and converts the inverted direct current into low-frequency alternating current to be sent to the radio frequency generation module, and the radio frequency generation module carries out frequency change on the received low-frequency alternating current through electronic tube self-oscillation or crystal control oscillation, converts the low-frequency alternating current into high-frequency electromagnetic energy of a microwave band and sends the high-frequency electromagnetic energy to the multi-band microwave transmitter;
the multi-band microwave emitter radiates electromagnetic waves of multiple frequency bands to M frequency selective wave-blocking rings on an insulating layer of the insulator string, and each frequency selective wave-blocking ring absorbs the electromagnetic energy of the electromagnetic waves of the corresponding frequency band and then generates heat through electromagnetic oscillation, so that deicing is performed.
Preferably, the frequency selective wave-inhibiting ring is made of a semiconductor material and has flexibility and stretchability;
the frequency selective wave-blocking ring is arranged on the insulating layer of the insulator string in two fixing modes:
one end face of the frequency selective wave-blocking ring can be adhered to the surface of an insulating layer of the insulator string through adhesive glue, and then the other end face of the frequency selective wave-blocking ring is coated and fixed through room-temperature vulcanized silicone rubber coating;
and secondly, in the production process of the insulator string, the frequency selective wave-blocking ring can be directly arranged in the insulating layer of the insulator string.
Preferably, the electromagnetic induction electricity taking module comprises P groups of electromagnetic coil units, and the P groups of electromagnetic coil units are connected in parallel;
each group of electromagnetic coil units comprises Q electromagnetic coils which are connected in series; wherein, P and Q are positive integers which are more than 2.
Preferably, the multiband microwave emitter consists of a plurality of antennas with different frequency bands, the antennas with the different frequency bands form an annular structure, the multiband microwave emitter is detachably fixed at the high-voltage end of the insulator string, the axial lead of the insulator string penetrates through the annular circle center of the multiband microwave emitter, the insulator string is perpendicular to the annular plane of the multiband microwave emitter, and the included angle between the main lobe direction of the antenna with each frequency band and the axial lead direction of the insulator string is greater than 0 degree and smaller than 30 degrees.
Preferably, the two rings in each set of frequency selective stop rings are identical in structure.
Preferably, all the frequency selective stop-wave rings on the same insulating layer have the same size, and the frequency selective stop-wave rings on different insulating layers have different sizes.
Preferably, the detection module is an infrared detector.
Preferably, the infrared detector includes an infrared light emitting end and a receiving end.
Preferably, the specific process of the control module controlling the working states of the relay protection module, the rectification module, the inversion module and the radio frequency generation module according to the received detection result is as follows:
when the detection result received by the control module is larger than the preset threshold value, the control module sends out a corresponding control instruction to enable the relay protection module, the rectification module, the inversion module and the radio frequency generation module to start working.
Preferably, the electromagnetic induction electricity taking module is of a cylindrical or polygonal cylinder structure; the cylindrical structure comprises two symmetrical arc structures, and two symmetrical arc structures are independent electromagnetic induction electricity-taking structures, and are fastened together through a buckle or a screw, and the electromagnetic induction electricity-taking module is wrapped and fixed on a power transmission line, and is externally made of epoxy resin and/or silicon rubber insulating materials and insulated from the power transmission line.
The beneficial effects brought by the invention are as follows: the invention can monitor the state of the flange in real time, automatically cleans ice on the surface of the flange through microwave resonance heat generation, has high working efficiency, does not need manual participation, and has no harm to the power grid safety and the personal safety. The deicing is based on the resonance heat generation of the frequency selection wave-blocking ring and the microwave, the high temperature cannot be generated, the material and the working characteristic of the flange are not influenced, and the invention has important significance for improving the working efficiency of the operation and maintenance of a power grid and ensuring the safe and stable operation of a power system.
The invention also has the advantages of high automation degree, long stable working time, no need of auxiliary external power supply, low operation and maintenance detection cost, low influence on the operation safety of the power grid and the like.
Drawings
Fig. 1 is a schematic diagram of an electromagnetic deicing system for high-voltage line insulators according to the present invention.
Fig. 2 is a top view of the insulating layer 10.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The first embodiment is as follows: referring to fig. 1 and fig. 2 to illustrate the present embodiment, the electromagnetic deicing system for the high-voltage line insulator according to the present embodiment includes an electromagnetic induction power taking module 1, a rectifying module 2, an inverting module 3, a radio frequency generating module 4, a detecting module 5, a control module 6, a multi-band microwave transmitter 7, M frequency selective wave-blocking rings 8, and a relay protection module 9;
the M frequency selective stop-wave rings 8 are divided into N groups, and each group comprises one or more frequency selective stop-wave rings 8; the N groups of frequency selective wave-blocking rings 8 are respectively arranged on N layers of insulating layers 10 of the insulator string; the frequency selective wave-blocking rings 8 on the same insulating layer 10 are used for receiving electromagnetic waves in the same frequency band, and the frequency bands of the electromagnetic waves received by the frequency selective wave-blocking rings 8 on different insulating layers 10 are different; m is more than N, and M and N are integers;
each frequency selective wave-resisting ring 8 comprises two ring bodies, the two ring bodies are provided with gaps, the included angle of the gaps of the two ring bodies is A, A is more than or equal to 120 degrees and less than or equal to 240 degrees, the two ring bodies are coaxial and coplanar, and a gap with equal interval exists between the two ring bodies;
the detection module 5 is used for detecting the thickness of ice accumulated on the surface of the insulator string and sending a detection result to the control module 6, and the control module 6 controls the working state of the relay protection module 9 according to the received detection result;
the control module 6 is also used for controlling the working states of the rectification module 2, the inversion module 3 and the radio frequency generation module 4;
the electromagnetic induction electricity taking module 1 is used for taking electricity from a power transmission line in a power-on state according to the electromagnetic induction principle and transmitting the obtained electric energy to the relay protection module 9, and the electric energy output end of the relay protection module 9 is connected with the electric energy input end of the rectification module 2;
the relay protection module 9 is used for detecting the electric energy output by the electromagnetic induction electricity taking module 1 and providing relay protection for the rectification module 2; when detecting that the electric energy output by the electromagnetic induction electricity taking module 1 generates over-current and/or over-voltage, the relay protection module 9 automatically cuts off and prohibits the electric energy from being output to the rectification module 2; when the electric energy output by the electromagnetic induction electricity taking module 1 does not generate over-current and/or over-voltage, the relay protection module 9 outputs the electric energy to the rectification module 2;
the rectification module 2 is used for rectifying the received electric energy and outputting direct current to the inversion module 3, the inversion module 3 inverts the received direct current and converts the inverted direct current into low-frequency alternating current to be sent to the radio frequency generation module 4, and the radio frequency generation module 4 performs frequency change on the received low-frequency alternating current through electronic tube self-oscillation or crystal control oscillation, converts the low-frequency alternating current into high-frequency electromagnetic energy of a microwave band and sends the high-frequency electromagnetic energy to the multi-band microwave transmitter 7;
the multi-band microwave emitter 7 radiates electromagnetic waves of multiple frequency bands to M frequency selective wave-blocking rings 8 on an insulating layer 10 of the insulator string, and each frequency selective wave-blocking ring 8 absorbs the electromagnetic energy of the electromagnetic waves of the corresponding frequency band and then conducts electromagnetic oscillation to generate heat, so that deicing is conducted.
The object to be treated by the high-voltage line insulator electromagnetic deicing system is ice on an insulator string, and the insulator string is made of glass, ceramic or silicon rubber. When the insulator string is made of silicone rubber, the insulating layer 10 is called the shed of the insulator, and when the insulator string is made of glass or ceramic, the insulating layer 10 is called the insulator of the insulator.
The high-voltage line insulator electromagnetic deicing system can detect the state of an insulator string in real time, ice on the surface of the insulator string is automatically cleaned through microwave resonance heat generation, the working efficiency is high, manual participation is not needed, and no harm is caused to the safety of a power grid and the personal safety. The deicing is based on the heat generation of the frequency selection wave-resistance ring and the microwave resonance, the high temperature cannot be generated, the material and the working characteristic of the insulator string are not affected, and the method has important significance for improving the working efficiency of the operation and maintenance of a power grid and ensuring the safe and stable operation of a power system.
In this embodiment, each group of frequency selective stop-wave rings 8 includes two rings, the two rings have notches, and the notches of the two rings have specific included angles, so that the electric field oscillating in any direction can generate the best resonant filtering effect on the frequency selective stop-wave rings.
The second embodiment is as follows: referring to fig. 1 and fig. 2 in particular, in this embodiment, the electromagnetic deicing system for a high-voltage line insulator string according to the first embodiment is further described, and the frequency selective wave-blocking ring 8 is made of a semiconductor material and has flexibility and stretchability;
the frequency selective wave-blocking ring 8 is fixed on the insulating layer 10 of the insulator string in two ways:
one end face of the frequency selective wave-resisting ring 8 can be adhered to the surface of an insulating layer 10 of the insulator string through adhesive glue, and then the other end face of the frequency selective wave-resisting ring 8 is coated and fixed through room-temperature vulcanized silicone rubber coating;
secondly, in the production process of the insulator string, the frequency selective wave-blocking ring 8 can be directly arranged in the insulating layer 10 of the insulator string.
When the multi-band microwave transmitter is specifically applied, the structural size and the distribution number of the frequency selective wave-blocking rings arranged on different glass, ceramic insulating parts or silicon rubber have specific difference, the structural size and the distribution number of the frequency selective wave-blocking rings are determined by the optimal wave-blocking frequency band of the frequency selective wave-blocking rings, the larger the optimal wave-blocking frequency band is, the smaller the structural size of the frequency selective wave-blocking ring 8 is, the smaller the distribution number is, the closer the distance from the multi-band microwave transmitter 7 is, and the optimal wave-blocking frequency band of the frequency selective wave-blocking ring 8 is matched with the working frequency of one antenna in the multi-band microwave transmitter 7.
The third concrete implementation mode: referring to fig. 1 in detail, in this embodiment, a high-voltage line insulator electromagnetic deicing system according to a first embodiment is further described, where the electromagnetic induction electricity taking module 1 includes P groups of electromagnetic coil units, and the P groups of electromagnetic coil units are connected in parallel;
each group of electromagnetic coil units comprises Q electromagnetic coils which are connected in series; wherein, P and Q are positive integers which are more than 2.
When the electromagnetic coil is applied to the power transmission line, the electromagnetic coil and the power transmission line are coplanar, and the magnetic field generated on the power transmission line in the electrified state is ensured to vertically penetrate through the plane where the electromagnetic coil is located.
The fourth concrete implementation mode: referring to fig. 1 specifically, the present embodiment further illustrates the electromagnetic deicing system for a high-voltage line insulator according to the first embodiment, the multiband microwave emitter 7 is composed of a plurality of antennas with different frequency bands, the plurality of antennas with different frequency bands form an annular structure, the multiband microwave emitter 7 is detachably fixed at the high-voltage end of the insulator string, the axial lead of the insulator string passes through the annular center of the multiband microwave emitter 7, the insulator string is perpendicular to the annular plane of the multiband microwave emitter 7, and the included angle between the main lobe direction of the antenna with each frequency band and the axial direction of the insulator string is greater than 0 ° and less than 30 °.
In the preferred embodiment, the arrangement of the included angle enables the main propagation direction of the electromagnetic wave emitted by the antenna to keep an approximately perpendicular included angle relationship with the frequency selective wave-blocking ring plane, and ensures that the oscillation direction of the electric field of the electromagnetic wave is approximately parallel to the frequency selective wave-blocking ring plane or forms a small angle with the frequency selective wave-blocking ring plane, so as to achieve the optimal effect of absorbing electromagnetic energy and further generating heat.
When the frequency selective wave-blocking ring is used, the optimal wave-blocking frequency band of the frequency selective wave-blocking ring has strict consistency with the working frequency of a certain antenna in the multi-band microwave emitter 7, the consistency can ensure that the frequency selective wave-blocking rings on different insulating layers 10 can absorb electromagnetic waves with corresponding frequencies, the problems that the frequency selective wave-blocking ring close to the multi-band microwave emitter 7 absorbs more electromagnetic energy and the frequency selective wave-blocking ring far away from the multi-band microwave emitter 7 absorbs less electromagnetic energy are solved, and uniform heat generation and deicing on each insulating layer 10 of the insulator string are realized.
The fifth concrete implementation mode: referring specifically to fig. 1, the present embodiment further illustrates a high-voltage line insulator electromagnetic deicing system according to one or two embodiments, specifically referring to fig. 1, all frequency selective choke rings 8 on the same insulating layer 10 have the same size, and the frequency selective choke rings 8 on different insulating layers 10 have different sizes.
In the preferred embodiment, the two rings in each set of frequency selective stop-wave rings 8 are identical in shape but have different sizes, wherein the outer diameter of the small-sized ring is smaller than the inner diameter of the large-sized ring, and the distance between the two rings has a fixed proportional relationship with the sizes of the two rings.
The sixth specific implementation mode: referring to fig. 1 in detail, in this embodiment, a fifth embodiment of the electromagnetic deicing system for a high-voltage line insulator is further described, where two ring bodies in each group of frequency selective choke rings 8 are circular rings, square rings, or triangular rings.
The seventh embodiment: referring to fig. 1 in detail, in this embodiment, a high-voltage line insulator electromagnetic deicing system according to a first embodiment is further described, and the detection module 5 is an infrared detector.
In the preferred embodiment, the detection module 5 may also adopt a mechanical detector for sensing.
The specific implementation mode is eight: referring to fig. 1 in detail, the present embodiment further illustrates an electromagnetic deicing system for a high-voltage line insulator according to a seventh embodiment, where the infrared detector includes an infrared light emitting end and a receiving end.
In the preferred embodiment, the infrared detector is mounted on the upper surface of the first insulating layer 10 at the high-voltage end of the insulator string, and detects different transmission and emissivity of the reference ice and other media existing in the air to infrared light, so as to determine whether the surface of the insulator string is coated with ice or not, and transmit a signal to the control module 6.
The specific implementation method nine: referring to fig. 1 specifically, in this embodiment, a specific process of the control module 6 controlling the working states of the relay protection module 9, the rectification module 2, the inversion module 3, and the radio frequency generation module 4 according to the received detection result is as follows:
when the detection result received by the control module 6 is greater than the preset threshold value, the control module 6 sends out a corresponding control instruction to enable the relay protection module 9, the rectification module 2, the inversion module 3 and the radio frequency generation module 4 to start working.
The detailed implementation mode is ten: referring to fig. 1 in detail, in this embodiment, a high-voltage line insulator string electromagnetic deicing system according to a first embodiment is further described, where the electromagnetic induction electricity taking module 1 is a cylindrical or polygonal cylinder structure; the tubular structure comprises two symmetrical arc structures, and two symmetrical arc structures are the electric structure is got to independent electromagnetic induction, and two symmetrical arc structures pass through buckle or screw fastening together, and electromagnetic induction gets the cladding of electric module 1 and fix on the power transmission line, and electromagnetic induction gets electric module 1 outside and comprises epoxy and/or silicon rubber insulating material, and is insulating with the transmission line.
Although the invention herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that features described in different dependent claims and herein may be combined in ways different from those described in the original claims. It is also to be understood that features described in connection with individual embodiments may be used in other described embodiments.
Claims (9)
1. The electromagnetic deicing system for the high-voltage line insulator is characterized by comprising an electromagnetic induction electricity taking module (1), a rectifying module (2), an inverting module (3), a radio frequency generating module (4), a detecting module (5), a control module (6), a multi-band microwave emitter (7), M frequency selection wave-resistance rings (8) and a relay protection module (9);
the M frequency selective stop-wave rings (8) are divided into N groups, and each group comprises one or more frequency selective stop-wave rings (8); the N groups of frequency selective wave-blocking rings (8) are respectively arranged on N layers of insulating layers (10) of the insulator string; the frequency selective wave-blocking rings (8) on the same insulating layer (10) are used for receiving electromagnetic waves in the same frequency band, and the frequency bands of the electromagnetic waves received by the frequency selective wave-blocking rings (8) on different insulating layers (10) are different; m is more than N, and M and N are integers;
each frequency selective wave-resisting ring (8) comprises two ring bodies, wherein gaps are formed in the two ring bodies, the included angle of the gaps of the two ring bodies is A, A is larger than or equal to 120 degrees and smaller than or equal to 240 degrees, the two ring bodies are coaxial and coplanar, and gaps with equal intervals are formed between the two ring bodies;
the detection module (5) is used for detecting the thickness of ice accumulated on the surface of the insulator string and sending a detection result to the control module (6), and the control module (6) controls the working state of the relay protection module (9) according to the received detection result;
the control module (6) is also used for controlling the working states of the rectification module (2), the inversion module (3) and the radio frequency generation module (4);
the electromagnetic induction electricity taking module (1) is used for taking electricity from a power transmission line in a power-on state according to the electromagnetic induction principle and transmitting the obtained electric energy to the relay protection module (9), and the electric energy output end of the relay protection module (9) is connected with the electric energy input end of the rectification module (2);
the relay protection module (9) is used for detecting the electric energy output by the electromagnetic induction electricity taking module (1) and providing relay protection for the rectification module (2); when detecting that the electric energy output by the electromagnetic induction electricity taking module (1) generates over-current and/or over-voltage, the relay protection module (9) automatically cuts off and prohibits the electric energy from being output to the rectification module (2); when the electric energy output by the electromagnetic induction electricity taking module (1) does not generate over-current and/or over-voltage, the relay protection module (9) outputs the electric energy to the rectification module (2);
the rectification module (2) is used for rectifying the received electric energy and outputting direct current to the inversion module (3), the inversion module (3) inverts the received direct current and converts the inverted direct current into low-frequency alternating current to be sent to the radio frequency generation module (4), the radio frequency generation module (4) changes the frequency of the received low-frequency alternating current through electronic tube self-oscillation or crystal control oscillation, converts the low-frequency alternating current into high-frequency electromagnetic energy of a microwave band and sends the high-frequency electromagnetic energy to the multi-band microwave transmitter (7);
the multi-band microwave transmitter (7) radiates electromagnetic waves of multiple frequency bands to M frequency selective wave-blocking rings (8) on an insulating layer (10) of the insulator string, and each frequency selective wave-blocking ring (8) absorbs electromagnetic energy of the electromagnetic waves of the corresponding frequency band and then generates heat through electromagnetic oscillation, so that deicing is performed;
the multiband microwave emitter (7) is composed of a plurality of antennas with different frequency bands, the antennas with the different frequency bands form an annular structure, the multiband microwave emitter (7) is detachably fixed at the high-voltage end of the insulator string, the axial lead of the insulator string penetrates through the annular circle center of the multiband microwave emitter (7), the insulator string is perpendicular to the annular plane of the multiband microwave emitter (7), and the included angle between the main lobe direction of the antenna with each frequency band and the axial direction of the insulator string is larger than 0 degree and smaller than 30 degrees.
2. A high-voltage line insulator electromagnetic deicing system according to claim 1, characterized in that the frequency selective choke ring (8) is made of a semiconductor material, is flexible and stretchable;
the frequency selective wave-blocking ring (8) is arranged on the insulating layer (10) of the insulator string in two fixing modes:
one end face of the frequency selective wave-resisting ring (8) can be adhered to the surface of an insulating layer (10) of the insulator string through adhesive glue, and then the other end face of the frequency selective wave-resisting ring (8) is coated and fixed on the surface through room-temperature vulcanized silicone rubber coating;
secondly, in the production process of the insulator string, the frequency selective wave-blocking ring (8) can be directly arranged in an insulating layer (10) of the insulator string.
3. The high-voltage line insulator electromagnetic deicing system according to claim 1, characterized in that the electromagnetic induction electricity taking module (1) comprises P groups of electromagnetic coil units, and the P groups of electromagnetic coil units are connected in parallel;
each group of electromagnetic coil units comprises Q electromagnetic coils which are connected in series; wherein, P and Q are positive integers which are more than 2.
4. A high voltage line insulator electromagnetic deicing system according to claim 1 or 2, characterized in that all frequency selective choke rings (8) on the same insulating layer (10) are of the same size, and the frequency selective choke rings (8) on different insulating layers (10) are of different sizes.
5. High-voltage line insulator electromagnetic deicing system according to claim 4, characterized in that the two ring bodies of each group of frequency selective choke rings (8) are configured as circular, square or triangular rings.
6. A high voltage line insulator electromagnetic deicing system according to claim 1, characterized in that the detection module (5) is an infrared detector.
7. The electromagnetic deicing system for high-voltage line insulators according to claim 6, wherein the infrared detector comprises an infrared light emitting end and a receiving end.
8. The electromagnetic deicing system for high-voltage line insulators according to claim 1, wherein the specific process of the control module (6) for controlling the working states of the relay protection module (9), the rectification module (2), the inversion module (3) and the radio frequency generation module (4) according to the received detection result is as follows:
when the detection result received by the control module (6) is larger than the preset threshold value, the control module (6) sends a corresponding control instruction to enable the relay protection module (9), the rectification module (2), the inversion module (3) and the radio frequency generation module (4) to start working.
9. The electromagnetic deicing system for the high-voltage line insulator according to claim 1, characterized in that the electromagnetic induction electricity-taking module (1) is of a cylindrical or polygonal cylindrical structure; the cylindrical structure comprises two symmetrical arc structures, and two symmetrical arc structures are independent electromagnetic induction electricity-taking structures, and are fastened together through a buckle or a screw, and the electromagnetic induction electricity-taking module (1) is wrapped and fixed on a power transmission line, and the electromagnetic induction electricity-taking module (1) is externally made of epoxy resin and/or silicon rubber insulating materials and is insulated from the power transmission line.
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