CN109149493B - Heating control equipment and control method for multi-strand insulation self-heating overhead ground wire - Google Patents
Heating control equipment and control method for multi-strand insulation self-heating overhead ground wire Download PDFInfo
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- CN109149493B CN109149493B CN201811194176.XA CN201811194176A CN109149493B CN 109149493 B CN109149493 B CN 109149493B CN 201811194176 A CN201811194176 A CN 201811194176A CN 109149493 B CN109149493 B CN 109149493B
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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
A heating control device and a control method of a stranded insulating self-heating overhead ground wire are provided, wherein the heating overhead ground wire is a wire and comprises an outer conductor, a protective metal ring, an insulating heat conduction ring and an inner heating ring, the control device is connected to a A, B port of the wire, the inner heating ring adopts of three different structures, namely a non-insulating wire structure, an insulating wire structure and an insulating optical fiber tube, the heating control device has two different structures according to the difference of the inner heating ring structure, namely the non-insulating wire structure and the insulating wire structure, is connected with the self-heating overhead ground wire at the A end, is connected with the ground after the outer conductor is in short circuit connection with the inner heating ring at the B end of the wire in the non-insulating wire structure, and is also provided with a switch, a microprocessor and a wireless communication module at the B end of the wire.
Description
() technical field
The invention relates to an anti-icing and de-icing technology for power transmission lines, in particular to a heating control device and a control method for multi-strand insulated self-heating overhead ground wires.
(II) background of the invention
With the development of social economy, under the environment of continuously increasing power load application, the requirement for an exposed power line is higher and higher, in cold winter, the lines in a lot of areas can be frozen to cause damage to the lines, when the ice is over the bearing force of the lines, serious accidents such as line breakage and the like occur, therefore, the ice removal of the power transmission line in winter is indispensable and very important, in the prior art, the ice removal technology is continuously improved, application No. CN201610867150.1 < > self-melting ice conductor and ice-melting equipment </ > power transmission line online ice-melting method is disclosed, the method carries out ice removal under the control of a control center, the situation that power needs to be cut off and the serious faults of the lines can be avoided, the prior art has greatly improved ice removal technology, application No. CN201810370549.8 < self-made thermal conductor embedded insulating heat conductor and heating equipment </pc > and implementation method thereof </pc > discloses another different types of online ice-removing methods, the method uses insulating heat conduction material to replace the heating conductor of the self-made, the heating material, the cost is low, the effect is good, the method can be used for controlling the ice-removing method for the ice of the power transmission line, the ice removal of the power transmission line, the overhead transmission line is not applicable for controlling the high-removing method, the overhead ground wire is not applicable for controlling the overhead ground wire, the overhead ground wire is applicable method of the overhead ground wire, and the overhead ground wire, the method for controlling the overhead ground wire is not applicable method for controlling the overhead ground wire, the overhead ground wire is not.
Disclosure of the invention
The invention aims to provide heating control equipment and a control method of a multistrand insulated self-heating overhead ground wire, aiming at the defects of the prior art.
The purpose of the invention is achieved by the following steps:
the multi-strand insulating self-heating overhead ground wire is a lead and consists of an outer conductor, a protective metal ring, an insulating heat conduction ring and an inner side heating ring from outside to inside in sequence. The two ends of the lead are called an A end and a B end; the heating control equipment of the overhead ground wire is connected to the ports of the multi-strand insulating self-heating overhead ground wire;
the outer conductor is made of metal or alloy and surrounds the outer side of the protection metal ring, the protection metal ring is made of metal and surrounds the outer side of the insulating heat conduction material, the insulating heat conduction ring is made of insulating heat conduction material and surrounds the outer side of the inner heating ring, and the periphery of the inner heating ring is completely surrounded, so that the inner heating ring is completely isolated from the outer conductor; the inner surface of the insulating heat conduction ring is completely contacted with the outer surface of the inner side heating ring, and the outer surface of the insulating heat conduction ring is completely contacted with the inner surface of the protective metal ring.
The inner heating ring has three structures, wherein the three structures are structures, and the three structures are respectively a non-insulated wire structure, an insulated wire structure and an insulated optical fiber tube structure, the non-insulated wire refers to a wire without an insulated material on the outer side of the wire, the insulated wire refers to a wire with an insulated material layer on the outer side of the wire, the insulated material layer is an insulated heat conduction material, the wire is made of a metal material with higher resistivity and higher stress, the insulated optical fiber tube refers to an optical fiber metal tube with an insulated material layer on the outer side, and the insulated material layer is an insulated heat conduction material.
The inner heating coil of the non-insulated wire structure is composed of strands or multi-strand non-insulated wires, when composed of multi-strand non-insulated wires, the strands are short-circuited with each other, the non-insulated wires are made of metal materials with higher resistivity and larger stress,
the heating ring at the inner side of the insulated wire structure consists of a plurality of insulated wires;
the heating ring at the inner side of the insulated optical fiber tube structure consists of a plurality of insulated conducting wires and a plurality of insulated light-ray tubes;
according to the difference of the structure of the inner heating ring, the heating control equipment has two different structures:
when the inner side heating ring is of a non-insulated wire structure, the heating control equipment is connected with the self-heating overhead ground wire at the end A of the self-heating overhead ground wire, and the end A of the wire and the outer conductor are connected with the end A connection place; and at the end B of the lead, the outer conductor is connected with the inner heating coil in a short circuit mode and then is connected to a terminal B place, and the terminal A place and the terminal B place are connected with the ground.
The heating control equipment is composed of a power supply connecting end, a grounding connecting end, a series resistor, a grounding switch, a power supply switch, a direct-current power supply, an A-end microprocessor and an A-end wireless communication module.
The power supply connecting end is connected to the inner heating ring, the series resistor, the grounding switch and the power supply switch of the self-heating overhead ground wire; the grounding connecting end is connected to the outer conductor, the A end grounding point, the grounding switch, the series resistor and the direct current power supply.
The two ends of the series resistor are respectively connected to the power connection end and the grounding connection end.
The two ends of the grounding switch are respectively connected to the power supply connecting end and the grounding connecting end, the end of the power supply switch is connected to the power supply connecting end, and the other end is connected to the direct-current power supply.
The end of the DC power supply is connected to the power switch, and the other end is connected to the ground connection end.
The power switch, the grounding switch and the direct current power supply are all connected to the A-end microprocessor and controlled by the microprocessor.
The A-end microprocessor is connected with the power switch, the grounding switch and the direct-current power supply and controls the working states of the power switch, the grounding switch and the direct-current power supply;
the A-end microprocessor is connected with the wireless communication module and receives commands through the wireless communication module.
When the inner heating coil is in an insulated wire structure or an insulated optical fiber tube structure, the heating control equipment consists of a power supply connecting end, a grounding connecting end, a series resistor, a grounding switch, a power supply switch, a direct-current power supply, an A-end microprocessor, an A-end wireless communication module, a B-end microprocessor, a B-end wireless communication module, an A-end switch 1, an A-end switch 2, an A-end switch, a B-end switch 1, a B-end switch 2, a B-end switch, an A-end connecting place and a B-end connecting place.
The power supply connecting end is connected to the inner heating ring, the series resistor, the grounding switch and the power supply switch of the self-heating overhead ground wire; the grounding connecting end is connected to the outer conductor, the A end grounding point, the grounding switch, the series resistor and the direct current power supply. The A end connecting place is connected with the ground;
the two ends of the series resistor are respectively connected to the power connection end and the grounding connection end.
The two ends of the grounding switch are respectively connected to the power supply connecting end and the grounding connecting end, the end of the power supply switch is connected to the power supply connecting end, and the other end is connected to the direct-current power supply.
The end of the DC power supply is connected to the power switch, and the other end is connected to the ground connection end.
The power switch, the grounding switch and the direct current power supply are all connected to the A-end microprocessor and controlled by the microprocessor;
the A-end microprocessor is connected with a power switch, a grounding switch and a direct-current power supply, controls the connection of the power switch, the grounding switch, the A-end switch 1, the A-end switch 2, the A-end switches 24-3 … … 24-k-2, 24-k-1 and 24-k, and controls the working states of the power switch, the grounding switch, the direct-current power supply, the A-end switch 1, the A-end switch 22 and the A-end switches 24-3 … … 24-k-2, 24-k-1 and 24-k; the B-end microprocessor is connected with the B-end switch 1, the B-end switch 2, the B-end switches 25-3 … … 25-k-2 and 25-k-1 to control the working states of the B-end switch 1, the B-end switch 2, the B-end switches 25-3 … … 25-k-2 and 25-k-1.
The A-end microprocessor is connected with the wireless communication module and receives commands through the wireless communication module;
the B-end microprocessor is connected with the wireless communication module and receives commands through the wireless communication module.
When the inner heating coil 4 is an insulated wire structure and an insulated optical fiber tube structure, the number of the insulated wires is 2k +1, the insulated wires are numbered in sequence and are coded as a No. 1 insulated wire, a No. 2 insulated wire, a No. 3 insulated wire, … …, a No. 2k insulated wire and a No. 2k +1 insulated wire, and the insulated wires are set to have the same resistance and are all RN;
the end A of the No. 1 insulated wire is connected to the power supply connecting end, and the end B is connected to the end B termination point;
the end A of the No. 2 insulated wire is in short-circuit connection with the No. 3 insulated wire and is connected to the end A switch 1, and the end B of the No. 1 insulated wire is in short-circuit connection; the A-end switch 1 is respectively connected to the A end and the A end connection place of the No. 2 insulated conductor;
the end A of the No. 3 insulated wire is in short-circuit connection with the No. 2 insulated wire, and the end B of the No. 3 insulated wire is in short-circuit connection with the No. 4 insulated wire and is connected to the end B switch 1; the end B switch 1 is respectively connected to the end B of the No. 3 insulated wire and the end B connection place;
the end A of the No. 4 insulated wire is in short-circuit connection with the No. 5 insulated wire and is connected to the end A switch 2, and the end B of the No. 4 insulated wire is in short-circuit connection with the No. 3 insulated wire; the A-end switch 2 is respectively connected to the A end and the A end connection place of the No. 4 insulated wire;
the A end of the No. 5 insulated wire is in short circuit connection with the No. 4 insulated wire, and the B end of the No. 5 insulated wire is in short circuit connection with the No. 6 insulated wire and is connected to the B end switch 2; the end B switch 2 is respectively connected to the end B of the No. 5 insulated wire and the end B connection place;
……
the end A of the No. 2k-1 insulated wire is in short-circuit connection with the No. 2k-2 insulated wire, and the end B of the No. 2k insulated wire is in short-circuit connection with the No. 2k insulated wire and is connected to the end B switch k-1; the end B switch k-1 is respectively connected to the end B of the No. 2k-1 insulated wire and the end B termination point;
the end A of the No. 2k insulated wire is in short-circuit connection with the No. 2k +1 insulated wire and is connected to the switch k at the end A, and is in short-circuit connection with the No. 2k-1 insulated wire at the end B; the A-end switch k is respectively connected to the A end of the No. 2k insulated wire and the A end connection place;
the end A of the insulated wire No. 2k +1 is in short circuit connection with the insulated wire No. 2k, and the end B is in short circuit connection with the outer conductor and is connected to a terminal B place.
When the inner heating coil is in a non-insulated wire structure and the grounding switch is in a short circuit, the power connection end and the grounding connection end are in a short circuit; when the ground switch is open, the power supply connection terminal and the ground connection terminal are connected to a series circuit of the power supply switch and the direct-current power supply.
When the inner heating ring of the multi-strand insulating self-heating overhead ground wire is of an insulating structure or an insulating optical fiber structure, the multi-strand insulating self-heating overhead ground wire sequentially consists of an outer conductor, a protective metal ring and an inner heating ring from outside to inside.
When the inner heating ring is of a non-insulated conductor structure, the non-insulated conductor adopts 7 strands of non-insulated steel wires; when the inner heating ring is an insulated optical fiber structure, the insulated optical fiber structure consists of 9 insulated wires and 3 insulated light pipes.
The heating control device is controlled by the control server,
the control server sends control information to the microprocessors at the A end and the B end of the self-heating overhead ground wire through the wireless communication module, and controls the resistance of the inner heating ring through controlling the switches at the A end and the B end of the self-heating overhead ground wire, so that the heating amount is controlled;
according to the technical scheme, different control methods are adopted according to the fact that an inner heating ring is of a non-insulated conductor structure, an insulated wire and an insulated optical fiber structure:
the inner heating ring is of a non-insulated conductor structure:
non-heating state:
the grounding switch is short-circuited, and the power switch is open-circuited;
heating state:
open circuit of grounding switch and short circuit of power switch
The inboard heating coil is insulating conductor structure and insulating optic fibre structure:
non-heating state:
the grounding switch is short-circuited, and the power switch is open-circuited; all the switches at the A end are short-circuited, and all the switches at the B end are short-circuited;
heating state:
the grounding switch is open, and the power switch is short-circuited;
the resistance of the inner heating ring is adjusted through the switch states of the switch at the A end and the switch at the B end;
all the switches at the end A are in short circuit, and when all the switches at the end B are in short circuit, the resistance of the inner heating ring is RN;
the switch 1 at the A end is open, other switches at the A end are short-circuited, and when all switches at the B end are short-circuited, the resistance of the inner heating ring is 3 RN;
when the A-end switch 1 and the A-end switch 2 are open, other A-end switches are short-circuited, the B-end switch 1 is open, and other B-end switches are short-circuited, the resistance of the inner heating ring is 5 RN;
the end A switch connected with the ends A of the end A switch 1, the end A switch 2 and the No. 6 insulated conducting wire end A is open, other end A switches are short-circuited, the end B switch 1 and the end B switch 2 are open, and when other end B switches are short-circuited, the resistance of the inner side heating coil is 7 RN;
……
the A-end switch 124-1, the A-end switches 224-2 and … … are open-circuited at the A-end switch k-1, the A-end switch k is short-circuited, the B-end switch 125-1, the B-end switch 225-2 and the … … B-end switch k-2 are open-circuited, and when the B-end switch k-1 is short-circuited, the resistance of the inner heating coil is 2k-1 RN;
when all the switches at the A end are open and all the switches at the B end are open, the resistance of the inner heating coil is (2k +1) RN.
The positive significance of the invention is as follows:
1. the invention effectively implements the anti-icing and de-icing of the overhead ground wire, controls the heating through the resistance of the heating wire, and further accurately controls the current of the internal heating structure and the current flowing through the outer conductor.
2. The pressure difference between the outer conductor and the internal heating structure is controlled, and the insulation requirement of the insulating layer is reduced.
3. And adjusting the heating value of the overhead ground wire in real time according to the actual need of ice prevention and ice melting.
4. Adopt the preparation of stranded conductor to heat built on stilts ground wire certainly, be equipped with inner structure guard circle simultaneously, in process of production, can bear great effort during the stranded conductor parcel, not only reduce the insulating layer damage, can also improve and make the built on stilts ground wire quality of making certainly.
(IV) description of the drawings
Fig. 1 is a schematic structural diagram of the self-heating overhead ground wire profile of the present invention.
Fig. 2 is a section of a self-heating overhead ground wire structure.
Fig. 3 is a structural schematic diagram of an inner heating coil 7-strand uninsulated conducting wire.
Fig. 4 is a schematic view of an insulated wire using a steel wire as a wire.
Fig. 5 is a schematic view of a fiber optic metal tube structure with an insulating material layer on the outside.
Fig. 6 is an inner heating ring using a 13-piece insulated conductor structure.
Fig. 7 is an insulated fiber optic structure inside heating coil using 9 insulated wires and 3 insulated fiber optic wires.
Fig. 8 is a schematic diagram of the structure of the outer conductor of layers of metal strands.
Fig. 9 is a schematic diagram of an outer conductor structure of two layers of metal strands.
Fig. 10 is a schematic view of the structure of the heating control device when the inner heating coil is a non-insulating structure.
Fig. 11 is a schematic structural view of the heating control device when the inner heating coil has an insulating structure.
FIG. 12 is a circuit schematic of a microprocessor architecture.
Fig. 13 is a schematic diagram of the RS232 interface of the microprocessor.
Fig. 14 is a diagram of a five-to-three volt power conversion circuit.
Fig. 15 is a circuit diagram of a three-to-two volt power conversion circuit.
FIG. 16 is a JTAG circuit diagram.
Fig. 17 is a schematic diagram of a switching circuit.
Fig. 18 is a block diagram of the control center structure.
In the figure, 1 outer conductor, 2 protective metal ring, 3 insulating heat conducting ring, 4 inner side heating ring, 5-1 to 5-7 non-insulated wire, 6 wire insulating layer, 7 wire layer, 8 optical fiber tube insulating layer, 9 metal tube, 10-1 to 10-4 optical fiber, 11-a1 to 11-a13 insulated wire, 11-B1 to 11-B9 insulated wire, 11-n1 to 11-n2k +1 insulated wire, 12-1 to 12-3 insulating optical fiber tube, 13-a1 to 13-an conductive metal wire, 13-B1 to 13-bm conductive metal wire, 14A terminal, 15B terminal, 16 power source terminal, 17 ground connection terminal 18 series resistor, 19 ground switch, 20 power source switch, 21 DC power source, 22-1A terminal microprocessor, 22-2B terminal microprocessor, the system comprises a 23-1A end wireless communication module, a 23-2B end wireless communication module, 24-1A end switches 1, 24-2A end switches 2, 24-k-2A end switches, 25-1B end switches 1, 25-2B end switches 2, 25-k-1-25-k-2B end switches, a 23-3 wireless communication module and a 58 control server.
(V) detailed description of the preferred embodiments
See figures 1, 2.
The multi-strand insulating self-heating overhead ground wire is a lead and consists of an outer conductor 1, a protective metal ring 2, an insulating heat conduction ring 3 and an inner side heating ring 4 from outside to inside in sequence; the two ends of the lead are called an A end and a B end; and the heating control equipment is connected to the port of the multi-strand insulated self-heating overhead ground wire.
When the inner heating ring 4 of the multi-strand insulating self-heating overhead ground wire is of an insulating structure or an insulating optical fiber structure, the multi-strand insulating self-heating overhead ground wire is composed of an outer conductor 1, a protective metal ring 2 and the inner heating ring 4 from outside to inside in sequence, or composed of the outer conductor 1, the protective metal ring 2, an insulating heat conduction ring 3 and the inner heating ring 4 in sequence; .
The outer conductor 1 is made of metal or alloy and surrounds the outer side of the protection metal ring, the protection metal ring 2 is made of metal ring and surrounds the outer side of the insulating heat conduction material 3, the insulating heat conduction ring 3 is made of insulating heat conduction material and surrounds the outer side of the inner side heating ring 4, the periphery of the inner side heating ring is completely surrounded, and the inner side heating ring 4 is completely isolated from the outer conductor 1; the inner surface of the insulating heat conduction ring 3 is completely contacted with the outer surface of the inner side heating ring 4, and the outer surface of the insulating heat conduction ring 3 is completely contacted with the inner surface of the protective metal ring 2;
when the inner heating coil is of a non-insulated wire structure, the insulated heat conduction coil 3 is necessary. The heat conducting material of the insulating heat conducting ring in the embodiment is a heat conducting insulating material produced by combined fertilizer medium-navigation nanotechnology development limited company: the model is as follows: ZH-HCM-A.
For the transmission conductor, the metal conductor of the inner heating ring is designed according to the specification of the aluminum stranded wire and the steel core aluminum stranded wire (GB1179) of the national standard of the people's republic of China, or is doped with a steel core material which has higher resistivity and higher strength than the steel core. The outer conductor is an aluminum stranded wire designed according to the national standard of the people's republic of China aluminum stranded wires and the specification of aluminum steel-cored stranded wires (GB1179), or an aluminum stranded wire on the outer layer of the aluminum steel-cored stranded wires, or other wires with lower resistivity than the aluminum stranded wires.
The inner side heating ring 4 has three structures, wherein structures are adopted, and the three structures are respectively a non-insulated wire structure, an insulated wire structure and an insulated optical fiber tube structure, wherein the non-insulated wire refers to a wire without an insulated material on the outer side of the wire;
the inner heating coil 4 of the non-insulated wire structure is composed of strands or multi-strand non-insulated wires, when composed of multi-strand non-insulated wires, the strands are mutually short-circuited, and the non-insulated wires are made of materials with higher resistivity.
The inner heating ring 4 has three structures, wherein any structures are adopted, and the three structures are respectively a non-insulated wire structure, an insulated wire structure and an insulated optical fiber tube structure.
The non-insulated wire refers to a wire without insulating materials on the outer side of the wire, refers to an inner heating coil formed by strands or a plurality of strands of non-insulated wires, when the non-insulated wire is formed by a plurality of strands of non-insulated wires, the strands of non-insulated wires are mutually short-circuited, the non-insulated wire is made of materials with higher resistivity, the embodiment adopts a 7-strand steel wire structure, and referring to fig. 3, 5-1,5-2,5-3,5-4,5-5,5-6 and 5-7 are non-insulated wires.
See fig. 4. The insulated wire is a wire with an insulating material layer on the outer side of the wire, the insulating material layer is made of insulating heat conduction materials, and the wire is made of materials with higher resistivity. The conducting wire is made of a material with higher resistivity, and the conducting wire in the embodiment is made of a steel wire. In fig. 4, 6 is a wiring insulation layer, 7 is a wiring layer. The insulating layer can be painted or wrapped by oil wrapping paper.
See fig. 6. The heating ring at the inner side of the insulated wire structure is composed of 13 insulated wires, 11-a1, 11-a2, … … and 11-a13 insulated wires are distributed in the insulated heat conduction ring 3.
See fig. 5. The insulated optical fiber tube is an optical fiber metal tube with an insulating material layer on the outer side, and the insulating material layer is an insulating heat conduction material. In the figure, 8 is an optical fiber tube insulating layer, 9 is a metal tube, and 10-1, 10-2, 10-3 and 10-4 are optical fiber tubes.
See fig. 7. The inner heating ring of the insulated optical fiber tube structure consists of 9 insulated wires 11-b1, 11-b2, … … and 11-b9 and 3 insulated optical fiber tubes 12-1, 12-2 and 12-3. The optical fibers in the insulated fiber optic tube are used for communication.
Referring to fig. 8 and 9, the outer conductor is a conductive metal ring or is composed of conductive metal wires, and when the outer conductor is composed of conductive metal wires, the conductive metal wires are layers or multiple layers, the conductive metal wires are made of materials with lower resistivity, and the embodiment adopts aluminum, 13-a1, 13-a2, 13-a3, … …, 13-an-1 and 13-an, when the conductive metal wires are layers, 13-b1, 13-b2, 13-b3, … …, 13-bm-1 and 13-bm are conductive metal wires when the conductive metal wires are two layers.
See fig. 10 and 11.
Heating control equipment structure: the heating control equipment adopted by the heating ring at the inner side of the non-insulating structure is different from that adopted by the heating ring at the inner side of the insulating structure.
When the inner heating ring is of a non-insulated wire structure, the heating control equipment is connected with the self-heating overhead ground wire at the end A of the self-heating overhead ground wire; at the end of the wire B, the outer conductor 1 is short-circuited to the inner heating coil 4 and then connected to a B-terminal 15, which is connected to ground.
The heating control device is composed of a power supply connecting end 16, a grounding connecting end 17, a series resistor 18, a grounding switch 19, a power supply switch 20, a direct current power supply 21, an A-end microprocessor 22-1 and an A-end wireless communication module 23-1.
The power supply connecting end 16 is connected to the inner heating ring 4 of the self-heating overhead ground wire, the series resistor 18, the grounding switch 19 and the power supply switch 20; the grounding connection end 17 is connected to the A terminal grounding point, a grounding switch 19, a series resistor (18) and a direct current power supply 21;
two ends of the series resistor 18 are respectively connected to the power connection end 16 and the grounding connection end 17; the value of the series resistance in the embodiment is between 100 and 1000 times of the resistance of the heating coil at the inner side;
the two ends of the grounding switch 19 are respectively connected to the power supply connecting end 16 and the grounding connecting end 17, the end of the power supply switch 20 is connected to the power supply connecting end 16, and the other end is connected to the direct-current power supply 21;
the end of the direct current power supply 21 is connected to the power switch 20, and the other end is connected to the ground connection end 17;
the power switch 20, the grounding switch 19 and the direct current power supply 21 are all connected to the A-end microprocessor (22-1) and controlled by the microprocessor;
the A-end microprocessor 22-1 is connected with the power switch 20, the grounding switch 19 and the direct-current power supply 21 and controls the working states of the power switch, the grounding switch and the direct-current power supply;
the A-terminal microprocessor 22-1 is connected with the wireless communication module 23-1 and receives commands through the wireless communication module.
In this embodiment, when the inner heating coil is an insulated wire structure or an insulated fiber tube structure, the heating control device is composed of a power connection terminal 16, a ground connection terminal 17, a series resistor 18, a ground switch 19, a power switch 20, a direct current power supply 21, an a-side microprocessor 22-1, an a-side wireless communication module 23-1, a B-side microprocessor 22-2, a B-side wireless communication module 23-2, an a-side switch 124-1, an a-side switch 224-2, an a-side switch 24-3 … … 24-k-2, 24-k-1, 24-k, a B-side switch 125-1, a B-side switch 225-2, a B-side switch 25-3 … … 25-k-2, 25-k-1, an a termination point 14, and a termination point 15.
The power supply connecting end 16 is connected to the inner heating ring 4 of the self-heating overhead ground wire, the series resistor 18, the grounding switch 19 and the power supply switch 20; the ground connection 17 is connected to the a-terminal ground, the ground switch 19, the series resistor 18, and the dc power supply 21.
Two ends of the series resistor are respectively connected to a power connection end 16 and a grounding connection end 17;
the two ends of the grounding switch 19 are respectively connected to the power supply connecting end 16 and the grounding connecting end 17, the end of the power supply switch 20 is connected to the power supply connecting end 16, and the other end is connected to the direct-current power supply 21;
the end of the direct current power supply 21 is connected to the power switch 20, and the other end is connected to the ground connection end 17;
the power switch 20, the grounding switch 19 and the direct current power supply 21 are all connected to the A-end microprocessor 22-1 and controlled by the microprocessor;
the A-end microprocessor 22-1 is connected with the power switch 20, the grounding switch 19, the direct-current power supply 21, the A-end switch 124-1, the A-end switch 224-2, the A-end switches 24-3 … … 24-k-2, 24-k-1 and 24-k to control the working states of the power switch, the grounding switch, the direct-current power supply, the A-end switch 124-1, the A-end switch 224-2, the A-end switches 24-3 … … 24-k-2, 24-k-1 and 24-k); the B-end microprocessor 22-2 is connected with the B-end switch 125-1, the B-end switch 225-2, the B-end switches 25-3 … … 25-k-2 and 25-k-1 to control the working states of the B-end switch 125-1, the B-end switch 225-2 and the B-end switches 25-3 … … 25-k-2 and 25-k-1.
The A-end microprocessor 22-1 is connected with the wireless communication module 23-1 and receives commands through the wireless communication module;
the B-terminal microprocessor 22-2 is connected with the wireless communication module 23-2 and receives commands through the wireless communication module.
In this embodiment, the number of the insulated wires is 2k +1, the insulated wires are numbered in sequence and are coded as a number 1 insulated wire, a number 2 insulated wire, a number 3 insulated wire, … …, a number 2k insulated wire and a number 2k +1 insulated wire, and the insulated wires have the same resistance and are all RN;
the end a of insulated conductor No. 1 is connected to the power connection terminal 16, and the end B is connected to the end B termination site 15;
the end A of the No. 2 insulated wire is in short-circuit connection with the No. 3 insulated wire and is connected to the end A switch 124-1, and the end B is in short-circuit connection with the No. 1 insulated wire; end a switch 124-1 is connected to insulated conductor No. 2 at end a and end a termination point 14, respectively;
the end A of the No. 3 insulated wire is in short-circuit connection with the No. 2 insulated wire, and the end B of the No. 3 insulated wire is in short-circuit connection with the No. 4 insulated wire and is connected to the end B switch 1; end B switch 125-1 is connected to insulated conductor No. 3 at end B and end B termination point 15, respectively;
the end A of the No. 4 insulated wire is in short-circuit connection with the No. 5 insulated wire and is connected to the end A switch 224-2, and the end B is in short-circuit connection with the No. 3 insulated wire; end a switch 224-2 is connected to end a of insulated conductor No. 4 and end a termination point 14, respectively;
the A end of the No. 5 insulated wire is in short-circuit connection with the No. 4 insulated wire, and the B end of the No. 5 insulated wire is in short-circuit connection with the No. 6 insulated wire and is connected to a B end switch 225-2; the terminal B switch 225-2 is connected to the terminal B and the terminal B of the insulated wire No. 5 respectively;
……
the end A of the No. 2k-1 insulated wire is in short-circuit connection with the No. 2k-2 insulated wire, and the end B of the No. 2k insulated wire is in short-circuit connection with the No. 2k insulated wire and is connected to a switch k-125-k-1 at the end B; the terminal B switch k-125-k-1 is connected to the terminal B and terminal B points of the insulated conductor No. 2 k-1.
The direct current power supply of the embodiment is selected: manufacturer: shenzhen Jinzhou electronics technology Limited: the model is as follows: a high-power direct-current power supply KRSP-15000-40375.
See fig. 12. The microprocessor is selected from a single-chip microcomputer, U11 MSP430F5438, and a single-chip microcomputer manufactured by TEXASINSTRUMENTS, USA.
See fig. 13. In the microprocessor RS232 interface schematic diagram, U8: MAX232 RS232 interface chip is manufactured by Maxim corporation; CH3LOOPa, CH3LOOPb are connected with the communication interface connecting line of the terminal power line carrier communication module.
CH4LOOPa, CH4LOOPb are connected with terminal electricity parameter acquisition module communication interface connecting wire.
See figures 14-18.
In the five-volt to three-volt power conversion circuit, UP18: LM26400Y: the power conversion chip is produced by NATIONALSEIMICONDUCTOTR company in the United states.
The same circuit is adopted by all the switch circuits of the invention.
KT manufactured by Ohlong Co., Japan, LY1-J,
UT1 manufactured by toshiba corporation of japan, TLP521,
QT4 Fairchild Semiconductor Corporation, USA SS9013,
QT1 Fairchild Semiconductor Corporation, USA: IN4148 of the first and second liquid crystal compositions,
the switch port A and the switch port B are connected to a connection end which needs to control short circuit and open circuit, and the RELAYIN1 is connected with an IO pin of the microprocessor.
The wireless communication module adopts a wireless transmission communication module: manufactured by Beijing Accept communication equipments Co., Ltd: g300 type GSM data transmission module. The G300 type GSM data transmission module interface is connected with the RS232 interface of the microprocessor.
The control server is a computer and sends control information to the microprocessors at the A end and the B end of the self-heating overhead ground wire through the wireless communication module. The resistance of the inner heating ring is controlled by controlling the switches of the A end and the B end of the self-heating overhead ground wire, so that the heating value is controlled.
The heating control equipment is controlled by the control server, the control server sends control information to the microprocessors at the A end and the B end of the self-heating overhead ground wire through the wireless communication module, and the resistance of the inner heating ring is controlled by controlling the switches at the A end and the B end of the self-heating overhead ground wire, so that the heating amount is controlled.
According to the technical scheme, different control methods are adopted according to the fact that an inner heating ring is of a non-insulated conductor structure, an insulated wire and an insulated optical fiber structure:
the inner heating ring is of a non-insulated conductor structure:
non-heating state:
the grounding switch 19 is short-circuited, and the power switch 20 is open-circuited;
heating state:
the grounding switch 19 is open and the power switch 20 is short-circuited
The inboard heating coil is insulating conductor structure and insulating optic fibre structure:
non-heating state:
the grounding switch 19 is short-circuited, and the power switch 20 is open-circuited; all the switches at the A end are short-circuited, and all the switches at the B end are short-circuited;
heating state
The grounding switch 19 is open, and the power switch 20 is short-circuited;
the resistance of the inner heating ring is adjusted through the switch states of the switch at the A end and the switch at the B end;
all the switches at the end A are in short circuit, and when all the switches at the end B are in short circuit, the resistance of the inner heating ring is RN;
the switch 124-1 at the A end is open, other switches at the A end are short-circuited, and when all switches at the B end are short-circuited, the resistance of the inner heating ring is 3 RN;
the A-end switch 124-1 and the A-end switch 224-2 are open, other A-end switches are short-circuited, the B-end switch 125-1 is open, and when other B-end switches are short-circuited, the resistance of the inner heating coil is 5 RN;
the end A switch 124-1, the end A switch 224-2 and the end A switch connected with the end A of the No. 6 insulated conducting wire are open, other end A switches are short-circuited, the end B switch 125-1 and the end B switch 225-2 are open, and when other end B switches are short-circuited, the resistance of the inner side heating coil is 7 RN;
……
the circuit comprises an A-end switch 124-1, an A-end switch 224-2 and an … …, wherein the A-end switch k-124-k-1 is open, the A-end switch k is short, the B-end switch 125-1, the B-end switch 225-2 and the … … B-end switch k-225-k-2 are open, and when the B-end switch k-125-k-1 is short, the resistance of an inner side heating coil is (2k-1) RN;
when all the switches at the A end are open and all the switches at the B end are open, the resistance of the inner heating coil is (2k +1) RN.
Claims (6)
- The heating control equipment for the multi-strand insulating self-heating overhead ground wire is characterized in that the multi-strand insulating self-heating overhead ground wire is a lead and consists of an outer conductor (1), a protective metal ring (2), an insulating heat conduction ring (3) and an inner side heating ring (4) from outside to inside in sequence, wherein two ends of the lead are called an end A and an end B;the outer conductor (1) is made of metal or alloy and surrounds the outer side of the protective metal ring, the protective metal ring (2) is made of metal and surrounds the outer side of the insulating heat conduction material (3), the insulating heat conduction ring (3) is made of insulating heat conduction material and surrounds the outer side of the inner side heating ring (4), the periphery of the inner side heating ring is completely surrounded, and the inner side heating ring (4) is completely isolated from the outer conductor (1); the inner surface of the insulating heat conduction ring (3) is completely contacted with the outer surface of the inner side heating ring (4), and the outer surface of the insulating heat conduction ring (3) is completely contacted with the inner surface of the protective metal ring (2);the inner side heating ring (4) has three structures, wherein any structures are adopted, and the three structures are respectively a non-insulated wire structure, an insulated wire structure and an insulated optical fiber tube structure, wherein the non-insulated wire refers to a wire without an insulated material on the outer side of the wire, the insulated wire refers to a wire with an insulated material layer on the outer side of the wire, the insulated material layer is an insulated heat conduction material, the wire is made of a metal material with higher resistivity and higher stress, the insulated optical fiber tube refers to an optical fiber metal tube with an insulated material layer on the outer side, and the insulated material layer is an insulated heat conduction material;the inner heating coil (4) of the non-insulated wire structure is composed of strands or multi-strand non-insulated wires, when the non-insulated wire structure is composed of the multi-strand non-insulated wires, the strands are mutually short-circuited, the non-insulated wires are made of metal materials with higher resistivity and larger stress,the heating ring (4) at the inner side of the insulated wire structure consists of a plurality of insulated wires;the inner side heating ring (4) of the insulated optical fiber tube structure is composed of a plurality of insulated conducting wires and a plurality of insulated light-ray tubes;according to the difference of the structure of the inner heating ring (4), the heating control equipment has two different structures:when the inner side heating ring is of a non-insulated wire structure, the heating control equipment is connected with the self-heating overhead ground wire at the end A of the self-heating overhead ground wire, and the outer conductor (1) is connected with the end A of the wire at the end A and a grounding point (14); at the end B of the lead, after the outer conductor (1) is in short circuit connection with the inner heating ring (4), the lead is connected to a terminal B ground point (15), and the terminal A ground point (14) and the terminal B ground point (15) are connected with the ground;the heating control equipment consists of a power supply connecting end (16), a grounding connecting end (17), a series resistor (18), a grounding switch (19), a power supply switch (20), a direct-current power supply (21), an A-end microprocessor (22-1) and an A-end wireless communication module (23-1);the power supply connecting end (16) is connected to the inner side heating ring (4) of the self-heating overhead ground wire, the series resistor (18), the grounding switch (19) and the power supply switch (20); the grounding connection end (17) is connected to the outer conductor (1), the A end grounding point, the grounding switch (19), the series resistor (18) and the direct current power supply (21);two ends of the series resistor (18) are respectively connected to the power connection end (16) and the grounding connection end (17);two ends of the grounding switch (19) are respectively connected to the power supply connecting end (16) and the grounding connecting end (17), the end of the power supply switch (20) is connected to the power supply connecting end (16), and the end of is connected to the direct-current power supply (21);the end of a direct current power supply (21) is connected to the power switch (20), and the other end is connected to the ground connection end (17);the power switch (20), the grounding switch (19) and the direct current power supply (21) are all connected to the A-end microprocessor (22-1) and controlled by the microprocessor;the A-end microprocessor (22-1) is connected with the power switch (20), the grounding switch (19) and the direct current power supply (21) and controls the working states of the power switch (20), the grounding switch (19) and the direct current power supply (21);the A-end microprocessor (22-1) is connected with the wireless communication module (23-1) and receives commands through the wireless communication module;when the inner heating coil is of an insulated wire structure or an insulated optical fiber tube structure, the heating control equipment consists of a power supply connecting end (16), a grounding connecting end (17), a series resistor (18), a grounding switch (19), a power supply switch (20), a direct-current power supply (21), an A-end microprocessor (22-1), an A-end wireless communication module (23-1), a B-end microprocessor (22-2), a B-end wireless communication module (23-2), an A-end switch 1(24-1), an A-end switch 2(24-2), an A-end switch (24-3 … … 24-k-2, 24-k-1, 24-k), a B-end switch 1(25-1), a B-end switch 2(25-2), a B-end switch (25-3 … … 25-k-2, 25-k-1), An A terminal site (14) and a B terminal site (15);the power supply connecting end (16) is connected to the inner side heating ring (4) of the self-heating overhead ground wire, the series resistor (18), the grounding switch (19) and the power supply switch (20); the grounding connecting end (17) is connected to the outer conductor (1), the A-end grounding point (14), the grounding switch (19), the series resistor (18) and the direct current power supply (21); the A-terminal ground point (14) is connected with the ground;two ends of the series resistor are respectively connected to a power supply connecting end (16) and a grounding connecting end (17);two ends of the grounding switch (19) are respectively connected to the power supply connecting end (16) and the grounding connecting end (17), the end of the power supply switch (20) is connected to the power supply connecting end (16), and the end of is connected to the direct-current power supply (21);the end of a direct current power supply (21) is connected to the power switch (20), and the other end is connected to the ground connection end (17);the power switch (20), the grounding switch (19) and the direct current power supply (21) are all connected to the A-end microprocessor (22-1) and controlled by the microprocessor;the A-end microprocessor (22-1) is connected with a power switch (20), a grounding switch (19), a direct-current power supply (21), an A-end switch 1(24-1), an A-end switch 2(24-2) and A-end switches (24-3 … … 24-k-2, 24-k-1 and 24-k) to control the working states of the power switch, the grounding switch, the direct-current power supply, the A-end switch 1(24-1), the A-end switch 2(24-2) and the A-end switches (24-3 … … 24-k-2, 24-k-1 and 24-k); the B-end microprocessor (22-2) is connected with the B-end switch 1(25-1), the B-end switch 2(25-2) and the B-end switches (25-3 … … 25-k-2, 25-k-1) to control the working states of the B-end switch 1(25-1), the B-end switch 2(25-2) and the B-end switches (25-3 … … 25-k-2, 25-k-1);the A-end microprocessor (22-1) is connected with the wireless communication module (23-1) and receives commands through the wireless communication module;the B-end microprocessor (22-2) is connected with the wireless communication module (23-2) and receives commands through the wireless communication module.
- 2. The heating control apparatus for a multistrand insulated self-heating overhead ground wire of claim 1, wherein:when the inner heating ring (4) is of an insulated wire structure and an insulated optical fiber tube structure, the number of insulated wires is 2k +1, the insulated wires are numbered sequentially and are coded into a No. 1 insulated wire, a No. 2 insulated wire, a No. 3 insulated wire, … …, a No. 2k insulated wire and a No. 2k +1 insulated wire, and the insulated wires are arranged to have the same resistance and are all RN;the A end of the No. 1 insulated wire is connected to a power supply connecting end (16), and the B end is connected to a B end connecting place (15);the end A of the No. 2 insulated wire is in short-circuit connection with the No. 3 insulated wire and is connected to the end A switch 1(24-1), and the end B is in short-circuit connection with the No. 1 insulated wire; the A-terminal switch 1(24-1) is respectively connected to the A terminal of the No. 2 insulated wire and the A terminal ground point (14);the end A of the No. 3 insulated wire is in short-circuit connection with the No. 2 insulated wire, and the end B of the No. 3 insulated wire is in short-circuit connection with the No. 4 insulated wire and is connected to the end B switch 1; the B-end switch 1(25-1) is respectively connected to the B end of the No. 3 insulated wire and a B end connection place (15);the end A of the No. 4 insulated wire is in short-circuit connection with the No. 5 insulated wire and is connected to the end A switch 2(24-2), and the end B is in short-circuit connection with the No. 3 insulated wire; the A-end switch 2(24-2) is respectively connected to the A end of the No. 4 insulated wire and the A end grounding point (14);the A end of the No. 5 insulated wire is in short-circuit connection with the No. 4 insulated wire, the B end of the No. 5 insulated wire is in short-circuit connection with the No. 6 insulated wire and is connected to a B end switch 2 (25-2); the B-end switch 2(25-2) is respectively connected to the B end of the No. 5 insulated wire and a B end connection place (15);……the A end of the No. 2k-1 insulated wire is in short circuit connection with the No. 2k-2 insulated wire, and the B end of the No. 2k insulated wire is in short circuit connection with the No. 2k insulated wire and is connected to a B-end switch k-1 (25-k-1); the terminal B switch k-1(25-k-1) is respectively connected to the terminal B of the insulated wire No. 2k-1 and a terminal B ground point (15);the end A of the No. 2k insulated wire is in short-circuit connection with the No. 2k +1 insulated wire and is connected to an end A switch k (24-k), and the end B of the insulated wire is in short-circuit connection with the No. 2k-1 insulated wire; the A-terminal switch k is respectively connected to the A terminal of the No. 2k insulated wire and an A terminal ground point (14);the A end of the insulated wire No. 2k +1 is in short-circuit connection with the insulated wire No. 2k, the B end is in short-circuit connection with the outer conductor (1) and is connected to the B end grounding point (15), and the B end grounding point (15) is in short-circuit connection with the outer conductor (1) and the ground.
- 3. The heating control apparatus for a multistrand insulated self-heating overhead ground wire of claim 1, wherein: when the inner heating coil is in a non-insulated wire structure and the grounding switch is in a short circuit, the power connection end and the grounding connection end are in a short circuit; when the ground switch is open, the power supply connection terminal and the ground connection terminal are connected to a series circuit of the power supply switch and the direct-current power supply.
- 4. The heating control apparatus for a multistrand insulated self-heating overhead ground wire of claim 1, wherein: when the inner side heating ring (4) of the multi-strand self-made heat conducting wire is of an insulating structure or an insulating optical fiber structure, the multi-strand self-made heat conducting wire sequentially consists of an outer conductor (1), a protective metal ring (2) and the inner side heating ring (4) from outside to inside.
- 5. The heating control apparatus for a multistrand insulated self-heating overhead ground wire of claim 1, wherein: when the inner heating ring is of a non-insulated conductor structure, the non-insulated conductor adopts 7 strands of non-insulated steel wires; when the inner heating ring is an insulated optical fiber structure, the insulated optical fiber structure consists of 9 insulated wires and 3 insulated light pipes.
- 6, A control method for the heating control device of the multi-strand insulated self-heating overhead ground wire according to claim 1, wherein the heating control device is controlled by a control server,the control server sends control information to the microprocessors at the A end and the B end of the self-heating overhead ground wire through the wireless communication module, and controls the resistance of the inner heating ring through controlling the switches at the A end and the B end of the self-heating overhead ground wire, so that the heating amount is controlled;according to the technical scheme, different control methods are adopted according to the fact that an inner heating ring is of a non-insulated conductor structure, an insulated wire and an insulated optical fiber structure:1) the inner side heating ring is of a non-insulated conductor structure:non-heating state:the grounding switch (19) is short-circuited, and the power switch (20) is open-circuited;heating state:the grounding switch (19) is open-circuited and the power switch (20) is short-circuited2) The inner side heating ring is of an insulated conductor structure and an insulated optical fiber structure:non-heating state:the grounding switch (19) is short-circuited, and the power switch (20) is open-circuited; all the switches at the A end are short-circuited, and all the switches at the B end are short-circuited;heating stateThe grounding switch (19) is open, and the power switch (20) is short-circuited;the resistance of the inner heating ring is adjusted through the switch states of the switch at the A end and the switch at the B end;all the switches at the end A are in short circuit, and when all the switches at the end B are in short circuit, the resistance of the inner heating ring is RN;the switch 1(24-1) at the A end is open, other switches at the A end are short-circuited, and when all switches at the B end are short-circuited, the resistance of the inner heating ring is 3 RN;the end A switch 1(24-1) and the end A switch 2(24-2) are open, other end A switches are short-circuited, the end B switch 1(25-1) is open, and when other end B switches are short-circuited, the resistance of the inner side heating ring is 5 RN;the end A switch 1(24-1), the end A switch 2(24-2) and the end A of the No. 6 insulated wire are connected, the other end A switches are short-circuited, the end B switch 1(25-1) and the end B switch 2(25-2) are open-circuited, and when the other end B switches are short-circuited, the resistance of the inner heating coil is 7 RN;……the method comprises the following steps that an A-end switch 1(24-1), an A-end switch 2(24-2) and an … … A-end switch k-1(24-k-1) are opened, the A-end switch k is short-circuited, a B-end switch 1(25-1), a B-end switch 2(25-2) and a … … B-end switch k-2(25-k-2) are opened, and when the B-end switch k-1(25-k-1) is short-circuited, the resistance of an inner side heating coil is (2k-1) RN;when all the switches at the A end are open and all the switches at the B end are open, the resistance of the inner heating coil is (2k +1) RN.
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