CN106680633B - Cable pressure monitoring method and system - Google Patents

Cable pressure monitoring method and system Download PDF

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Publication number
CN106680633B
CN106680633B CN201611259614.7A CN201611259614A CN106680633B CN 106680633 B CN106680633 B CN 106680633B CN 201611259614 A CN201611259614 A CN 201611259614A CN 106680633 B CN106680633 B CN 106680633B
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pressure
cable
pressure value
value
sent
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CN106680633A (en
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刘振华
范海波
乔恒丽
关亚丽
曾丽
杨哲
曹娟
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Hon Hai Precision Industry Co Ltd
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Hon Hai Precision Industry Co Ltd
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02GINSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G7/00Overhead installations of electric lines or cables
    • H02G7/16Devices for removing snow or ice from lines or cables

Abstract

The embodiment of the invention provides a cable pressure monitoring method and a system, and the cable pressure monitoring method is applied to a cable pressure monitoring system. The electric heating device is sleeved on the cable, the pressure detection device detects a pressure value between the cable and the telegraph pole and sends the pressure value to the monitoring device, then the monitoring device judges the size of the received pressure value and a preset pressure value, and if the pressure value exceeds the preset pressure value, a first control signal is generated and sent to the electric heating device to execute ice and snow melting operation. The cable can quickly melt accumulated snow or ice on the surface of the cable in extremely cold weather, and the problem of cable fracture is effectively avoided.

Description

Cable pressure monitoring method and system
Technical Field
The invention relates to the field of electric power facilities, in particular to a cable pressure monitoring method and system.
Background
The high altitude power line is an infrastructure for realizing remote power transmission, and is used in the power transmission process. The cable needs to be subjected to various different climatic tests, for example, under extremely cold air temperature conditions, the surface of the cable often causes snow accumulation or ice formation due to rain and snow, so that the weight of the cable is increased sharply, and a series of problems such as cable breakage and the like occur.
Disclosure of Invention
The present invention aims to improve the above-mentioned technical problems. Therefore, the invention provides a method and a system for monitoring the pressure of a cable, which aim to quickly melt ice and snow accumulated on the cable, avoid the cable from being broken and ensure the safety of the power transmission process.
The invention provides a cable pressure monitoring method, wherein an electric heating device is sleeved on a cable, and the method comprises the following steps:
the pressure detection device detects a pressure value between the cable and the telegraph pole and sends the pressure value to the monitoring device;
the monitoring device judges the pressure value and a preset pressure value according to the received pressure value, and if the pressure value exceeds the preset pressure value, a first control signal is generated and sent to the electric heating device to execute ice and snow melting operation, so that ice and snow accumulated on the cable are melted;
the monitoring device judges whether the pressure value sent again by the pressure detection device is reduced or not in a preset time length after sending the first control instruction, and if the pressure value is reduced and is lower than the preset pressure value, a second control instruction is generated and sent to close the electric heating device;
if the pressure value is not reduced but is lower than a pressure threshold value, the electric heating device continues to execute the ice and snow ablation operation, wherein the pressure threshold value is the maximum pressure bearing value of the cable, and the preset pressure value is smaller than the pressure threshold value.
Further, the method further comprises:
and the monitoring device judges whether the pressure value sent again by the pressure detection device is reduced or not after sending the first control instruction for a preset time, and if the pressure value is not reduced and is higher than the pressure threshold value, a third control instruction is generated and sent to an electric power control center to inform workers of manual processing.
Further, the monitoring device is electrically connected with the camera device, and the method further comprises:
the monitoring device judges whether the pressure value sent again by the pressure detection device is reduced or not after sending the first control instruction, if the pressure value is not reduced and is higher than a pressure threshold value, the monitoring device generates and sends a fourth control instruction to the camera device, so that the camera device is started, acquires a current cable snow image and sends the current cable snow image to the power control center.
Further, before the step of determining, by the monitoring device, the magnitude of the pressure value and a preset pressure value according to the received pressure value is executed, the method further includes:
the monitoring device presets and stores the pressure bearing value of the cable, selects the maximum pressure bearing value of the cable as a pressure threshold value, and selects the pressure bearing value smaller than the pressure threshold value as a preset pressure value.
Another preferred embodiment of the present invention provides a cable pressure monitoring system, wherein an electric heating device is sleeved on a cable, the cable pressure monitoring system comprises a monitoring device, an electric heating device and a pressure detection device, the monitoring device is electrically connected with the pressure detection device and the electric heating device respectively, and the monitoring device comprises an information receiving unit, a judgment unit and a control signal generation unit;
the pressure detection device is used for detecting a pressure value between the cable and the telegraph pole;
the information receiving unit is used for receiving the pressure value between the cable and the electric pole, which is sent by the pressure detection device;
the judging unit is used for judging the size between the received pressure value and a preset pressure value and a pressure threshold value;
the control signal generating unit is used for generating a first control signal and sending the first control signal to the electric heating device to execute ice and snow melting operation when receiving the information that the pressure value exceeds the preset pressure value, so that ice and snow accumulated on the cable are melted; and
if the information that the pressure value sent by the pressure detection device is reduced and is lower than the preset pressure value is received in the preset time after the first control instruction is sent, a second control instruction is generated and sent to close the electric heating device;
if information that the pressure value sent by the pressure detection device is not reduced but is lower than a pressure threshold value is received, the electric heating device continues to execute ice and snow ablation operation, wherein the pressure threshold value is the maximum pressure bearing value of the cable, and the preset pressure value is smaller than the pressure threshold value;
the electric heating device is used for receiving a first control instruction sent by the monitoring device to execute the ice and snow melting operation, or receiving a second control instruction to stop executing the ice and snow melting operation.
Further, the control signal generation unit is further configured to, when the preset time period after the first control instruction is sent is long, if information that the pressure value sent by the pressure detection device is not reduced and is higher than the pressure threshold value is received, generate a third control instruction and send the third control instruction to the power control center to notify a worker of manual processing.
Further, the system also comprises a camera device electrically connected with the monitoring device;
the monitoring device generates and sends a fourth control instruction to the camera device if the control signal generation unit receives the information that the pressure value sent by the pressure detection device is not reduced and is higher than the pressure threshold value, so that the camera device is started, acquires the current cable snow image and sends the current cable snow image to the power control center.
Further, the electric heating device comprises a device body, a heating wire and a controller, wherein the controller is electrically connected with the monitoring device;
the device body is a hollow cylinder sleeved on the cable, and the electric heating wire is embedded in the device body and is parallel to the axis direction of the device body;
the controller is electrically connected with the heating wire and used for starting the heating wire to heat according to the first control instruction sent by the monitoring device so as to melt ice and snow.
Further, the device body comprises a first body, a second body and a connecting piece;
the connecting piece is electrically connected with the controller, and the first body and the second body are clamped through the connecting piece, so that the controller controls the connection state of the first body and the second body according to a fifth control instruction sent by the monitoring device.
Further, the pressure detection device comprises a pressure sensor and a signal converter;
the pressure sensor is used for detecting and sending a pressure value between the cable and the electric pole;
and the signal converter is used for converting the received pressure value into an electric signal and sending the electric signal to the cable pressure monitoring device.
Compared with the prior art, the cable pressure monitoring method and system provided by the embodiment of the invention are provided. Can in time detect the pressure value between cable and the wire pole, when this pressure value surpassed preset pressure value, melt through the ice and snow on the electric heating device quick realization cable, can effectively avoid the cable because of snow too much leads to the appearance of a series of problems such as fracture.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a connection block diagram of a cable pressure monitoring system according to a preferred embodiment of the present invention.
Fig. 2 is a block diagram of functional units of the pressure detecting device 110 in fig. 1.
Fig. 3 is a block diagram of functional units of the monitoring apparatus 120 in fig. 1.
Fig. 4 is a block diagram of functional units of the electric heating apparatus 130 in fig. 1.
Fig. 5 is a schematic structural diagram of the electric heating apparatus 130 in fig. 1.
Fig. 6 is a flow chart illustrating a cable pressure monitoring method according to a preferred embodiment of the invention.
Icon: 100-cable pressure monitoring system; 110-a pressure detection device; 112-a pressure sensor; 114-a signal converter; 120-a monitoring device; 122-an information receiving unit; 124-a judging unit; 126-control signal generation unit; 130-an electric heating device; 132-a device body; 1322-a first body; 1324-a second body; 1326-attachment; 134-electric heating wire; 136-a controller; 140-a camera device; 200-power control center.
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. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," and "connected" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1, a connection block diagram of a cable pressure monitoring system 100 according to an embodiment of the present invention is shown. The cable pressure monitoring system 100 includes a pressure detecting device 110, a monitoring device 120, an electric heating device 130 and a camera device 140, wherein the monitoring device 120 is electrically connected to the pressure detecting device 110 and the electric heating device 130, the electric heating device 130 is sleeved on the cable, and the monitoring device 120 is in communication connection with the power control center 200.
The pressure detecting device 110 is configured to detect a pressure value between the cable and the utility pole and send the pressure value to the monitoring device 120. As shown in fig. 2, the pressure detecting device 110 includes a pressure sensor 112 and a signal converter 114. The pressure sensor 112 is used to detect the pressure value between the cable and the utility pole and transmit the pressure value to the signal converter 114. The pressure value received by the signal converter 114 is converted into an electrical signal, and the magnitude of the pressure value between the cable and the utility pole is represented by the magnitude of the electrical signal, wherein the electrical signal may be a voltage signal or a current signal.
Further, the monitoring device 120 is configured to determine the magnitude of the pressure value and a preset pressure value. As shown in fig. 3, the monitoring apparatus 120 includes an information receiving unit 122, a judging unit 124, and a control signal generating unit 126. The information receiving unit 122 is electrically connected to the determining unit 124, and the determining unit 124 is electrically connected to the control signal generating unit 126.
Specifically, the information receiving unit 122 is configured to receive the pressure value and transmit the pressure value to the determining unit 124. The determining unit 124 is configured to determine the pressure value and a preset pressure value, and if the pressure value exceeds the preset pressure value, the control signal generating unit 126 generates a first control signal and sends the first control signal to the electric heating device 130 to perform an ice and snow ablation operation, so as to ablate ice and snow accumulated on the cable. It should be noted that the pressure bearing value of the cable is preset and stored in the monitoring device 120, the maximum pressure bearing value of the cable is selected as a pressure threshold, and the pressure bearing value smaller than the pressure threshold is used as a preset pressure value.
Further, the judging unit 124 judges again whether the currently received pressure value sent by the pressure detecting device 110 is decreased for a preset time length after the control signal generating unit 126 sends the first control instruction. If the pressure value is reduced and is lower than the preset pressure value, generating a second control instruction and sending the second control instruction to close the electric heating device 130; if the pressure value is not decreased but is lower than the pressure threshold value, the electric heating device 130 continues to perform the ice and snow ablation operation.
If the pressure value sent by the pressure detection device 110 is not decreased and is higher than the pressure threshold value after the control signal generation unit 126 sends the first control instruction for a preset time period, a third control instruction is generated and sent to the power control center 200 to notify a worker to perform manual processing.
Meanwhile, the camera device 140 is electrically connected to the monitoring device 120, and after the control signal generating unit 126 sends the first control command, the control signal generating unit 126 generates and sends a fourth control command to the camera device 140 if the information receiving unit 122 receives that the pressure value sent by the pressure detecting device 110 is not reduced and is higher than the pressure threshold, so that the camera device 140 is turned on and obtains a current cable snow image, and sends the current cable snow image to the power control center 200.
Further, the electric heating device 130 is configured to perform an ice and snow ablation operation according to the first control signal sent by the control signal generating unit 126, and stop the ice and snow ablation operation when the determining unit 124 determines that the pressure value is smaller than the preset pressure value.
Optionally, as shown in fig. 4, the electric heating device 130 includes a device body 132, a heating wire 134 and a controller 136, wherein the controller 136 is electrically connected to the monitoring device 120, the device body 132 is a hollow cylinder sleeved on the cable, and the heating wire 134 is embedded in the device body 132 and is parallel to the axial direction of the device body 132. The controller 136 is electrically connected to the heating wire 134, and is configured to turn on the heating wire 134 for heating according to the first control instruction sent by the monitoring device 120, so as to implement ice and snow ablation.
The device body 132 is made of two different materials, for example, an insulating material is used to extend from the heating wire 134 to the inner surface, so as to prevent the temperature of the device body 132 from increasing continuously during the continuous heating process of the heating wire 134, which may cause an unnecessary safety hazard due to an excessively high temperature on the cable. The heat conducting material is used to extend from the heating wire 134 to the outer surface, so as to meet the requirement of rapid heat transfer, and thus the accumulated snow accumulated on the device body 132 can be rapidly melted.
Optionally, as shown in fig. 5, the device body 132 includes a first body 1322, a second body 1324 and a connecting member 1326, the connecting member 1326 is electrically connected to the controller 136, and the first body 1322 and the second body 1324 are clamped by the connecting member 1326, so that the controller 136 controls a connection state of the first body 1322 and the second body 1324 according to a fifth control command sent by the monitoring device 120. For example, when the electric heating apparatus 130 is damaged or the cable needs to be replaced, the apparatus body 132 can be quickly and conveniently opened by the fifth control command sent by the monitoring apparatus 120.
Optionally, the first body 1322 and the second body 1324 may be, but not limited to, clamped by the connector 1326, for example, the connection between the first body 1322 and the second body 1324 can be achieved by using other electrically controlled devices or mechanical devices.
Optionally, the electric heating device 130 can melt ice and snow on the cable in an open state, and can also be used as a protective sleeve of the cable, so that the service life of the cable can be effectively prolonged.
Based on the above design, as shown in fig. 6, a schematic flow chart of a cable pressure monitoring method is provided for the embodiment of the present invention. The following steps are a detailed description of the specific flow shown in fig. 6.
Step S101: the monitoring device 120 prestores preset pressure values and pressure threshold values.
Specifically, in the embodiment of the present invention, the step S101 is performed by the judgment unit 124. Namely, the pressure bearing value of the cable is firstly tested, and a corresponding point value is selected as a preset pressure value, and the maximum pressure bearing value is used as a pressure threshold value of the cable.
Step S102: the pressure detection device 110 detects and transmits a pressure value between the cable and the utility pole.
Step S103: the monitoring device 120 receives the pressure value.
Specifically, in the embodiment of the present invention, the step S102 is performed by the pressure detection device 110, and the step S103 is performed by the information receiving unit 122 in the monitoring device 120.
Step S104: and (5) judging the magnitude of the pressure value and a preset pressure value, if the pressure value exceeds the preset pressure value, executing the step (S105), otherwise, executing the step (S102).
Step S105: a first control signal is generated and sent to the electro-thermal device 130.
Specifically, in the embodiment of the present invention, the step S104 is performed by the judging unit 124, and the step S105 is performed by the control signal generating unit 126. The determining unit 124 determines the received pressure value and a pre-stored preset pressure value, and if the pressure value exceeds the preset pressure value, the control signal generating unit 126 generates a first control signal and sends the first control signal to the electric heating device 130 to perform an ice and snow melting operation, so as to melt the ice and snow accumulated on the cable.
Step S106: the monitoring device 120 continues to receive the pressure value on the current cable.
Specifically, in the embodiment of the present invention, the step S106 is executed by the information receiving unit 122. That is, the information receiving unit 122 continuously receives the pressure value between the cable and the utility pole in the current state transmitted from the pressure detecting device 110 while the electric heating device 130 performs the ice and snow ablation operation.
Step S107: judging whether the pressure value is reduced, if so, executing step S108; otherwise, step S109 is executed.
Step S108: and when the pressure value is lower than the preset pressure value, a second control instruction is generated and sent to turn off the electric heating device 130.
Step S109: and is higher than the pressure threshold, a third control command is generated and sent to the power control center 200.
Specifically, in the embodiment of the present invention, the step S107 is performed by the determination unit 124, and the steps S108 and S109 are performed by the control signal generation unit 126. That is, while the electric heating device 130 performs the ice and snow melting operation, the determining unit 124 determines the currently received pressure value, and if the pressure value decreases and is lower than the preset pressure value, the control signal generating unit 126 generates a second control instruction and sends the second control instruction to turn off the electric heating device 130; if the pressure value is not reduced and is higher than the pressure threshold value, the control signal generating unit 126 generates a third control instruction and sends the third control instruction to the power control center 200 to notify a worker to perform manual processing; if the pressure value is not decreased but is lower than the pressure threshold value, the electric heating device 130 continues to perform the ice and snow ablation operation.
Step S110: the monitoring device 120 generates and sends a fourth control instruction to the camera device 140, so that the camera device 140 is turned on and obtains a current cable snow image, and sends the current cable snow image to the power control center 200.
Specifically, in the embodiment of the present invention, the step S110 is executed by the image pickup device 140. That is, when the determining unit 124 determines that the pressure value is greater than the pressure threshold, the control signal generating unit 126 generates a fourth control instruction and sends the fourth control instruction to the image capturing device 140 while generating a third control instruction, so that the image capturing device 140 is turned on, acquires a current cable snow accumulation image, and sends the current cable snow accumulation image to the power control center 200.
In summary, the present invention provides a method and a system for monitoring cable pressure. The monitoring device 120 determines whether to control the electric heating device 130 to perform the ice and snow melting operation according to the pressure value between the cable and the utility pole sent by the pressure detection device 110, and when the pressure value exceeds a pressure threshold value, the monitoring device quickly notifies the power control center 200 to perform manual processing. According to the invention, under extremely cold weather, a series of problems such as cable fracture caused by accumulated snow can be avoided to the greatest extent by detecting the pressure value between the cable and the telegraph pole in time, and meanwhile, the service life of the cable can be effectively prolonged.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The apparatus embodiments described above are merely illustrative and, for example, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims (8)

1. A cable pressure monitoring method is characterized in that an electric heating device is sleeved on a cable, and the method comprises the following steps:
the pressure detection device detects a pressure value between the cable and the telegraph pole and sends the pressure value to the monitoring device;
the monitoring device judges the pressure value and a preset pressure value according to the received pressure value, and if the pressure value exceeds the preset pressure value, a first control signal is generated and sent to the electric heating device to execute ice and snow melting operation, so that ice and snow accumulated on the cable are melted;
the monitoring device judges whether the pressure value sent again by the pressure detection device is reduced or not in a preset time length after sending the first control instruction, and if the pressure value is reduced and is lower than the preset pressure value, a second control instruction is generated and sent to close the electric heating device;
if the pressure value is not reduced but is lower than a pressure threshold value, the electric heating device continues to execute the ice and snow ablation operation, wherein the pressure threshold value is the maximum pressure bearing value of the cable, and the preset pressure value is smaller than the pressure threshold value;
when the monitoring device is electrically connected with the camera device, the method further comprises the following steps:
the monitoring device judges whether the pressure value sent again by the pressure detection device is reduced or not after sending the first control instruction, if the pressure value is not reduced and is higher than a pressure threshold value, the monitoring device generates and sends a fourth control instruction to the camera device, so that the camera device is started, acquires a current cable snow image and sends the current cable snow image to the power control center.
2. The cable pressure monitoring method of claim 1, further comprising:
and the monitoring device judges whether the pressure value sent again by the pressure detection device is reduced or not after sending the first control instruction for a preset time, and if the pressure value is not reduced and is higher than the pressure threshold value, a third control instruction is generated and sent to an electric power control center to inform workers of manual processing.
3. The cable pressure monitoring method according to claim 1, wherein before the step of determining, by the monitoring device, the magnitude of the pressure value and a preset pressure value according to the received pressure value is executed, the method further comprises:
the monitoring device presets and stores the pressure bearing value of the cable, selects the maximum pressure bearing value of the cable as a pressure threshold value, and selects the pressure bearing value smaller than the pressure threshold value as a preset pressure value.
4. A cable pressure monitoring system is characterized in that an electric heating device is sleeved on a cable, the cable pressure monitoring system comprises a monitoring device, an electric heating device and a pressure detection device, the monitoring device is electrically connected with the pressure detection device and the electric heating device respectively, and the monitoring device comprises an information receiving unit, a judgment unit and a control signal generation unit;
the pressure detection device is used for detecting a pressure value between the cable and the telegraph pole;
the information receiving unit is used for receiving the pressure value between the cable and the electric pole, which is sent by the pressure detection device;
the judging unit is used for judging the size between the received pressure value and a preset pressure value and a pressure threshold value;
the control signal generating unit is used for generating a first control signal and sending the first control signal to the electric heating device to execute ice and snow melting operation when receiving the information that the pressure value exceeds the preset pressure value, so that ice and snow accumulated on the cable are melted; and
if the information that the pressure value sent by the pressure detection device is reduced and is lower than the preset pressure value is received in the preset time after the first control instruction is sent, a second control instruction is generated and sent to close the electric heating device;
if information that the pressure value sent by the pressure detection device is not reduced but is lower than a pressure threshold value is received, the electric heating device continues to execute ice and snow ablation operation, wherein the pressure threshold value is the maximum pressure bearing value of the cable, and the preset pressure value is smaller than the pressure threshold value;
the electric heating device is used for receiving a first control instruction sent by the monitoring device to execute ice and snow ablation operation, or receiving a second control instruction to stop executing ice and snow ablation operation;
the system also comprises a camera device electrically connected with the monitoring device;
the monitoring device generates and sends a fourth control instruction to the camera device if the control signal generation unit receives the information that the pressure value sent by the pressure detection device is not reduced and is higher than the pressure threshold value, so that the camera device is started, acquires the current cable snow image and sends the current cable snow image to the power control center.
5. The cable pressure monitoring system according to claim 4, wherein the control signal generating unit is further configured to generate a third control command and send the third control command to a power control center to notify a worker to perform manual processing if receiving information that the pressure value sent by the pressure detecting device is not reduced and is higher than the pressure threshold value at a preset time after the first control command is sent.
6. The cable pressure monitoring system of claim 4, wherein the electrical heating device comprises a device body, a heating wire, and a controller, the controller being electrically connected to the monitoring device;
the device body is a hollow cylinder sleeved on the cable, and the electric heating wire is embedded in the device body and is parallel to the axis direction of the device body;
the controller is electrically connected with the heating wire and used for starting the heating wire to heat according to the first control instruction sent by the monitoring device so as to melt ice and snow.
7. The cable pressure monitoring system of claim 6, wherein the device body includes a first body, a second body, and a connector;
the connecting piece is electrically connected with the controller, and the first body and the second body are clamped through the connecting piece, so that the controller controls the connection state of the first body and the second body according to a fifth control instruction sent by the monitoring device.
8. The cable pressure monitoring system of claim 4, wherein the pressure detection device comprises a pressure sensor and a signal converter;
the pressure sensor is used for detecting and sending a pressure value between the cable and the electric pole;
the signal converter is used for converting the received pressure value into an electric signal and sending the electric signal to the cable pressure monitoring device.
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CN108037384A (en) * 2017-11-30 2018-05-15 国网河北省电力公司经济技术研究院 Electric power facility field monitoring method and device
CN108054710B (en) * 2017-12-17 2020-09-11 吴联凯 Electric power cable prevents snow device
CN108155710B (en) * 2017-12-17 2020-09-04 吴联凯 Solar charging's overhead cable blows snow device

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