CN111766476A - Rapid networking and fault early warning device for bypass cable monitoring and early warning method thereof - Google Patents
Rapid networking and fault early warning device for bypass cable monitoring and early warning method thereof Download PDFInfo
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- CN111766476A CN111766476A CN202010676160.3A CN202010676160A CN111766476A CN 111766476 A CN111766476 A CN 111766476A CN 202010676160 A CN202010676160 A CN 202010676160A CN 111766476 A CN111766476 A CN 111766476A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/086—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution networks, i.e. with interconnected conductors
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Abstract
The invention provides a fast networking and fault early warning device for monitoring a bypass cable and an early warning method thereof, wherein the device comprises a temperature measuring sensor, a load current sensor, a solar panel, a high-energy battery, an acquisition module, a communication module, a cloud server and a user terminal; the acquisition module is respectively connected with the temperature measuring sensor, the load current sensor, the solar panel and the high-energy battery, the acquisition module is connected to the cloud server through the communication module, and the cloud server is connected with the plurality of user terminals. The load current and the temperature rises of all cable joints on a bypass cable line are synchronously acquired, the change rule of the temperature rise of the cable joints and the change rule of the load current are analyzed, and the cable joints are timely found to have contact or insulation faults; by utilizing the solar power supply and mobile communication technology, the deployment and networking of measuring points can be quickly realized, and the application problem of the test device on the field bypass cable line is solved.
Description
Technical Field
The invention relates to the technical field of bypass cable monitoring, in particular to a rapid networking and fault early warning device for bypass cable monitoring and an early warning method thereof.
Background
In order to guarantee the normal power consumption demand of users, the traditional non-electrified operation is changed into an electrified operation mode, in the electrified operation process, a series of bypass drainage devices such as bypass cables and bypass switches are often adopted to replace and maintain the equipment and the circuit needing power-off maintenance, and the bypass cables are temporarily built loops which are formed by connecting multiple sections of cables in series, so that the problems that the joints are more, the load current is greatly changed and the like exist, a plurality of uncertain factors exist in field operation, how to improve the maintainability of the running state of the bypass cables at present is solved, and the problems become more and more concerned by the electrified operation department are solved.
The temperature rise of the outer surface of the cable joint in the running state of the bypass cable is detected, the change trend of the cable load current and the temperature rise of the cable joint is analyzed, the running state display and fault early warning service of the bypass cable is provided, and the method has a wide application prospect in the field of distribution network live working. The bypass cable has no shielding layer, the surrounding electromagnetic environment is complex during operation, and the monitoring equipment has high safety protection requirements; the existing detection equipment has single function, complicated communication and power supply modes and heavy equipment, and is not suitable for being applied in the field environment. At present, no effective means exists for rapidly developing bypass cable monitoring networking and fault early warning service.
The patent specification with the application number of 201410665538.4 discloses a voltage monitoring circuit of quick bypass switch energy storage capacitor, and this application can monitor FBS energy storage capacitor voltage and discharge circuit state in real time, sends state information for remote control protection system simultaneously, has solved FBS energy storage capacitor and relevant return circuit fault location problem, has made things convenient for FBS to be applied to the field debugging and the maintenance of high-voltage equipment overvoltage protection occasion greatly. However, the patent can not realize the rapid networking device and the fault early warning for monitoring the bypass cable, and the safety of the power supply of the bypass cable in the live working process is enhanced.
Disclosure of Invention
The invention provides a rapid networking and fault early warning device for monitoring a bypass cable, which can enhance the safety of power supply of the bypass cable in the live working process.
The invention also aims to provide an early warning method of the bypass cable monitoring quick networking and fault early warning device.
In order to achieve the technical effects, the technical scheme of the invention is as follows:
a fast networking and fault early warning device for monitoring bypass cables comprises a temperature measuring sensor, a load current sensor, a solar panel, a high-energy battery, an acquisition module, a communication module, a cloud server and a user terminal; the acquisition module is respectively connected with the temperature measuring sensor, the load current sensor, the solar panel and the high-energy battery, the acquisition module is connected to the cloud server through the communication module, and the cloud server is connected with the plurality of user terminals.
Preferably, the temperature measuring sensor utilizes a digital temperature probe to sample temperature, detects the outer surface temperature and the environment temperature of the three-phase cable connector in a synchronous mode, and calculates the temperature rise of a measuring point.
Preferably, the load current sensor uses the rogowski coil principle, and the open-close flexible structure design of the load current sensor can be fixed on a sampling bypass cable.
Preferably, the solar panel provides a device power supply for the measuring point when the measuring point is illuminated, the high-energy battery is charged at a constant current, and the measuring point is automatically switched to the high-energy battery to supply power when the measuring point is not illuminated.
Preferably, the communication module uploads the measurement data to a cloud server database for storage at regular time by using a GPRS network.
Furthermore, a website is set up on the cloud server, and the user is warned by short messages; and a user terminal logs in a website to check the running state of each measuring point of the bypass cable, and when the cloud server monitors data abnormity, the cloud server positions fault points by using various algorithms and sends short messages to provide early warning for users.
A method for early warning of a bypass cable monitoring rapid networking and fault early warning device comprises the following steps:
s1: a monitoring network is constructed between the cloud server and the measuring points;
s2: according to the field installation condition, configuring a measuring point ID number on the electrical connection relation diagram, when the cloud server receives the device heartbeat package, marking the connected measuring point device on the electrical connection relation diagram by using a color, and otherwise, displaying the device offline;
s3: and when the cloud server receives the measurement point data packet, the measurement point data packet is automatically analyzed, and the analyzed temperature rise and load current data is updated and displayed on an electrical connection relation graph in a webpage.
Further, the process of constructing the monitoring network between the cloud server and the measurement point is as follows: by means of configuration software, a bypass cable simulation electrical connection relation graph is quickly constructed on the cloud server, and the number, positions and phases of bypass cable joints can be identified in the graph.
Further, the process of early warning the fault point is as follows:
1) the cloud server synchronously monitors the outer surface temperature and the environment temperature of each joint of the bypass cable, the difference value of the joint surface temperature and the environment temperature is compared, and the temperature rise parameter of the cable joint is obtained through calculation;
2) secondly, extracting monitoring points with temperature rises exceeding a preset threshold value, comparing the temperature rises of the adjacent transverse and longitudinal cable joints of the cable head, analyzing the temperature rise difference of each cable joint, and determining whether the temperature rise is remarkably increased to be a common phenomenon;
3) and finally, synchronously analyzing the corresponding relation between the temperature rise and the load current of the bypass cable, and diagnosing whether the cable joint has insulation faults or poor contact faults according to the magnitude of the load current.
Further, the cloud server stores the diagnosis result, and automatically sends the number and the type of the fault cable joint to the user terminal through the short message, so that early warning of the fault point of the bypass cable joint is realized.
Compared with the prior art, the technical scheme of the invention has the beneficial effects that:
1. load current carried by a bypass cable line and temperature rises of all cable joints are synchronously collected, the change rule of the temperature rise of the cable head and the load current is analyzed, and the cable joints are timely found to have contact or insulation faults;
2. by utilizing the solar power supply and mobile communication technology, the deployment and networking of measurement points can be quickly realized, and the application problem of the test device on the field bypass cable line is solved;
3. the cloud server is used for completing functions of data storage, state display, short message early warning and the like, and information sharing and fault early warning service is provided for live working of the bypass cable.
Drawings
FIG. 1 is a view showing the structure of the apparatus of the present invention;
FIG. 2 is a flow chart of the method of the present invention;
wherein: the system comprises 1-four temperature measuring sensors, 2-load current sensors, 3-solar panels, 4-high-energy batteries, 5-acquisition modules, 6-communication modules, 7-cloud servers and 8-user terminals.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent;
for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product;
it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The technical solution of the present invention is further described below with reference to the accompanying drawings and examples.
Example 1
As shown in fig. 1, a fast networking and fault early warning device for bypass cable monitoring comprises a temperature measuring sensor 1, a load current sensor 2, a solar panel 3, a high-energy battery 4, an acquisition module 5, a communication module 6, a cloud server 7 and a user terminal 8; wherein, the temperature sensor 1 is a four-way temperature sensor;
the acquisition module 5 is connected with four ways of temperature measurement sensors, load current sensor, solar panel, high energy battery respectively, and the acquisition module 5 is connected to cloud ware 7 by communication module 6, and cloud ware 7 can link to each other with a plurality of user terminal 8.
The load current sensor 2 adopts the Rogowski coil principle, and the open-close type flexible structure design can be easily fixed on a sampling bypass cable, and the measurement range is from dozens of amperes to thousands of amperes; the four-way temperature measuring sensor 1 utilizes a digital temperature probe to sample temperature, detects the outer surface temperature and the environment temperature of the three-phase cable joint in a synchronous mode, and calculates to obtain the temperature rise of a measuring point; when the measuring point is illuminated, the solar panel 3 provides a device power supply and simultaneously charges the high-energy battery 4 at a constant current, and when the measuring point is not illuminated, the measuring point is automatically switched to the high-energy battery 4 to supply power; the communication module 6 uploads the measured data to a cloud server 7 database for storage at regular time by using a GPRS network; a website is established on the cloud server 7, and the user is warned by short messages; the user terminal 8 logs in a website to check the running state of each measuring point of the bypass cable, when the cloud server 7 monitors data abnormity, fault points are located by using various algorithms, and short messages are sent to provide early warning for users.
Example 2
As shown in fig. 2, a method for early warning of a bypass cable monitoring fast networking and fault early warning device includes the following specific processes:
a monitoring network is constructed between the cloud server 7 and the measurement points. Firstly, a bypass cable simulation electrical connection relation graph is quickly constructed on a cloud server 7 by using configuration software, and the number, the positions and the phases of bypass cable joints can be identified in the graph; secondly, configuring a measuring point ID number on the electrical connection relation diagram according to the field installation condition, and when the cloud server 7 receives a device heartbeat packet, marking the connected measuring point device on the electrical connection relation diagram by using a color, otherwise, displaying the device offline; and finally, when the cloud server 7 receives the measurement point data packet, the measurement point data packet is automatically analyzed, and the analyzed temperature rise and load current data is updated and displayed on an electrical connection relation graph in a webpage.
The specific process of early warning the fault point is as follows:
firstly, the cloud server 7 synchronously monitors the outer surface temperature and the environment temperature of each joint of the bypass cable, compares the difference value of the joint surface temperature and the environment temperature, and calculates to obtain a temperature rise parameter of the cable joint; secondly, extracting monitoring points with temperature rises exceeding a preset threshold value, comparing the temperature rises of the adjacent transverse and longitudinal cable joints of the cable head, analyzing the temperature rise difference of each cable joint, and determining whether the temperature rise is remarkably increased to be a common phenomenon; and finally, synchronously analyzing the corresponding relation between the temperature rise and the load current of the bypass cable, and diagnosing whether the cable joint has insulation faults or poor contact faults according to the magnitude of the load current. The cloud server 7 stores the diagnosis result, and automatically sends the number and the type of the fault cable joint to the user terminal 8 through the short message, so that early warning of the fault point of the bypass cable joint is realized.
The same or similar reference numerals correspond to the same or similar parts;
the positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent;
it should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A fast networking and fault early warning device for monitoring a bypass cable is characterized by comprising a temperature measuring sensor, a load current sensor, a solar panel, a high-energy battery, an acquisition module, a communication module, a cloud server and a user terminal; the acquisition module is respectively connected with the temperature measuring sensor, the load current sensor, the solar panel and the high-energy battery, the acquisition module is connected to the cloud server through the communication module, and the cloud server is connected with the plurality of user terminals.
2. The fast networking and fault early warning device for bypass cable monitoring according to claim 1, wherein the temperature measuring sensor utilizes a digital temperature probe to perform temperature sampling, detects the outer surface temperature and the environment temperature of the three-phase cable joint in a synchronous mode, and calculates the temperature rise of the measuring point.
3. The fast networking and failure early warning device of bypass cable monitoring of claim 2, wherein the load current sensor employs rogowski coil principle, and its open-close flexible structure design can be fixed to the sampled bypass cable.
4. The fast networking and failure early warning device of bypass cable monitoring of claim 3, wherein the solar panel provides the device power supply when the measuring point is illuminated, and simultaneously charges the high-energy battery with constant current, and the measuring point automatically switches to the high-energy battery to supply power when the measuring point is not illuminated.
5. The fast networking and fault early warning device for bypass cable monitoring according to claim 4, wherein the communication module uploads the measurement data to a cloud server database for storage at regular time by using a GPRS network.
6. The fast networking and fault early warning device for bypass cable monitoring according to claim 5, wherein a website is built on the cloud server, and a user is warned by short messages; and a user terminal logs in a website to check the running state of each measuring point of the bypass cable, and when the cloud server monitors data abnormity, the cloud server positions fault points by using various algorithms and sends short messages to provide early warning for users.
7. A method for early warning of a bypass cable monitoring rapid networking and fault early warning device is characterized by comprising the following steps:
s1: a monitoring network is constructed between the cloud server and the measuring points;
s2: according to the field installation condition, configuring a measuring point ID number on the electrical connection relation diagram, when the cloud server receives the device heartbeat package, marking the connected measuring point device on the electrical connection relation diagram by using a color, and otherwise, displaying the device offline;
s3: and when the cloud server receives the measurement point data packet, the measurement point data packet is automatically analyzed, and the analyzed temperature rise and load current data is updated and displayed on an electrical connection relation graph in a webpage.
8. The early warning method of the bypass cable monitoring rapid networking and fault early warning device according to claim 7, wherein the process of constructing the monitoring network between the cloud server and the measurement point is as follows: by means of configuration software, a bypass cable simulation electrical connection relation graph is quickly constructed on the cloud server, and the number, positions and phases of bypass cable joints can be identified in the graph.
9. The method for rapidly networking and early warning the failure of the bypass cable monitoring device according to claim 8, wherein the early warning of the failure point comprises the following steps:
1) the cloud server synchronously monitors the outer surface temperature and the environment temperature of each joint of the bypass cable, the difference value of the joint surface temperature and the environment temperature is compared, and the temperature rise parameter of the cable joint is obtained through calculation;
2) secondly, extracting monitoring points with temperature rises exceeding a preset threshold value, comparing the temperature rises of the adjacent transverse and longitudinal cable joints of the cable head, analyzing the temperature rise difference of each cable joint, and determining whether the temperature rise is remarkably increased to be a common phenomenon;
3) and finally, synchronously analyzing the corresponding relation between the temperature rise and the load current of the bypass cable, and diagnosing whether the cable joint has insulation faults or poor contact faults according to the magnitude of the load current.
10. The method as claimed in claim 8, wherein the cloud server stores the diagnosis result, and automatically sends the serial number and the fault type of the faulty cable connector to the user terminal through a short message, so as to realize early warning of the fault point of the faulty cable connector.
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| CN202010676160.3A CN111766476A (en) | 2020-07-14 | 2020-07-14 | Rapid networking and fault early warning device for bypass cable monitoring and early warning method thereof |
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| CN114264332A (en) * | 2021-11-18 | 2022-04-01 | 广西电网有限责任公司百色供电局 | Ring main unit T-shaped cable joint full life cycle management method and system |
| CN116520094A (en) * | 2023-06-29 | 2023-08-01 | 广东威顺电力工程有限公司 | Cable fault detection and early warning system and method |
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Application publication date: 20201013 |