CN212008766U - Fault on-line monitoring system of lightning arrester - Google Patents
Fault on-line monitoring system of lightning arrester Download PDFInfo
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- CN212008766U CN212008766U CN201922136280.XU CN201922136280U CN212008766U CN 212008766 U CN212008766 U CN 212008766U CN 201922136280 U CN201922136280 U CN 201922136280U CN 212008766 U CN212008766 U CN 212008766U
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Abstract
The utility model provides an online monitoring system of trouble of arrester, including remote monitoring platform, a plurality of feeder terminal and a plurality of arrester, it is a plurality of the arrester is equallyd divide and is arranged in 10KV transmission line's transformer, wherein, every feeder terminal is all installed to the arrester, each feeder terminal wireless connection in remote monitoring platform. Because the fault condition of each lightning arrester is monitored in real time by adopting the remote monitoring platform, once the fault occurs, the fault of the lightning arrester can be rapidly judged and the position of the fault lightning arrester can be positioned, and the fault lightning arrester can be rapidly maintained by maintenance personnel, so that the time for troubleshooting fault points one by one in the lightning arrester fault in the prior art can be greatly saved, the fault lightning arrester can be rapidly replaced, the condition that the transformer or a line is struck by lightning due to the fault lightning arrester can be avoided to the maximum extent, and the large-area power failure which can be caused can be avoided.
Description
Technical Field
The utility model belongs to the technical field of power equipment, especially, relate to a trouble on-line monitoring system of arrester.
Background
Negative thundercloud is generated in the flowing process of the atmosphere, the electric field intensity of the negative thundercloud is gradually increased along with the accumulation of negative charges in the negative thundercloud, and when the electric field intensity reaches a certain degree, downward step-type jump discharge is started, namely descending first-come discharge. When the descending leader gradually approaches to the ground object and reaches a certain distance, the ground object generates point discharge under the action of a strong electric field to form an ascending leader and develops towards the direction of the descending leader, and the ascending leader and the descending leader meet to form a lightning channel, so that lightning is formed. It is generally believed that as the lightning down leader progresses down from the thundercloud, its step jump is only affected by the surrounding atmosphere, with no established goal. It must select a hit only when jumping at the completion of the last rung. Thus, a lightning receptor can be installed on the object to be protected, making the ascending and descending pilots converge to avoid lightning strikes.
The lightning arrester is a metal object specially used for receiving lightning, a lightning rod is formed as a lightning rod, a lightning wire is formed as a lightning conductor, and a lightning belt and a lightning net are formed as a lightning protection belt and a lightning protection net. The lightning rod is higher than the protected object and is directly connected with the ground, when the lightning leader is close to the lightning rod, the electric field intensity between the lightning rod and the lightning cloud is maximum, so that a lightning discharging channel can be attracted to the lightning rod, and the lightning current is safely discharged to the ground through the down conductor and the grounding device, so that the protected object is prevented from being directly struck by lightning.
Because the existing power system with the working voltage grade of 10KV is generally applied to long-distance power transmission and generally applied to long-distance transmission to villages and households, an outdoor power transmission line erected at high altitude of 10KV is longer, a plurality of transformers need to be installed on the longer power transmission line to ensure the voltage stability of the line to the households, transformer faults caused by lightning strokes can occur in the lightning stroke process, one or more lightning protection devices can be installed on the corresponding transformers to ensure the normal work of the transformers, the transformers are prevented from being struck by the lightning by protecting the lightning protection devices, and the risk of power failure of the whole line is avoided.
However, when one or more lightning protection devices in the transmission line are damaged, the transformer loses the lightning protection effect. In the prior art, it is usually determined that a lightning arrester at a certain position may fail through human experience according to the lightning arresters in the power transmission line, or each lightning arrester is detected and determined to be failed along the power transmission line, so that the troubleshooting time is greatly wasted, the time for finding a failure point is increased, and if which lightning arrester fails cannot be found out in time and then is maintained or replaced, the lightning arrester is greatly likely to be struck by lightning in a line section where the lightning arrester is located, and a large-area power failure is caused.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a trouble on-line monitoring system of arrester when aiming at solving lightning arrester trouble among the prior art, can't in time discharge the arrester of looking for concrete trouble to lead to needing regional outage and test the problem in order to find out trouble arrester one by one to the arrester.
The utility model also provides an on-line fault monitoring system of the lightning arrester, which comprises a remote monitoring platform, a plurality of feeder terminals and a plurality of lightning arresters, wherein the lightning arresters are evenly distributed in a transformer of a 10KV transmission line,
and each lightning arrester is provided with a feeder terminal, and each feeder terminal is wirelessly connected to the remote monitoring platform.
Optionally, the feeder terminal comprises a box body and a box cover, the box cover covers the box body, a packaging plate is detachably mounted at the top of the box body close to the box cover, a circuit main board, a signal control board, a liquid crystal display panel, a wireless communication module, a battery management module and a storage battery are packaged in the box body, wherein,
the circuit main board is respectively and electrically connected with the signal control board, the liquid crystal display panel and the battery management module, the battery management module is electrically connected with the storage battery, and the battery management module is also electrically connected with the signal control board and the liquid crystal display panel;
the signal control board is electrically connected with the wireless communication module, and the wireless communication module is in communication connection with the remote monitoring platform.
Optionally, install voltage sensor, current sensor and connecting terminal on the circuit mainboard, voltage sensor passes through six cores and inserts connection arrester and battery management module by boat, current sensor connects six cores and prevents the open circuit boat and insert, the circuit mainboard passes through connecting terminal and is connected by serial circuits and liquid crystal display panel communication.
Optionally, a remote signaling acquisition circuit and a switching-on/off circuit are mounted on the signal control board; wherein the content of the first and second substances,
the remote signaling acquisition circuit is in communication connection with the circuit main board and the wireless communication module respectively, and the opening and closing circuit is electrically connected with the circuit main board.
Compared with the prior art, the beneficial effects of the utility model are as follows:
the embodiment of the utility model provides an online monitoring system of trouble of arrester, including remote monitoring platform, a plurality of feeder terminal and a plurality of arrester, it is a plurality of distribute in 10KV transmission line's transformer is equallyd divide to the arrester, wherein, every feeder terminal is all installed to the arrester, each feeder terminal wireless connection in remote monitoring platform. Because the remote monitoring platform is adopted to monitor the fault condition of each lightning arrester in real time, once a certain lightning arrester has a fault, the fault of the lightning arrester can be quickly judged and the position of the fault lightning arrester can be quickly positioned, so that when one or more lightning arresters in the power transmission line are damaged, the remote monitoring platform can quickly determine the specific position of the fault lightning arrester and the maintenance personnel can quickly maintain the lightning arrester; therefore, the time for troubleshooting fault points one by one in the prior art is greatly saved, the fault arrester can be replaced quickly, the condition that the transformer or the line is struck by lightning caused by the fault arrester can be avoided to the maximum extent, and large-area power failure possibly caused can be avoided.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.
Fig. 1 is a schematic system structure diagram of an online fault monitoring system provided by an embodiment of the present invention;
fig. 2 is a schematic diagram of a circuit structure principle of a feeder terminal provided by an embodiment of the present invention.
Fig. 3 is a schematic flow chart of a fault online monitoring method for an arrester according to an embodiment of the present invention;
fig. 4 is a schematic detailed flowchart of step S400 in fig. 3 according to an embodiment of the present invention;
fig. 5 is a schematic flow chart of a preset identification code of the online fault monitoring method for the lightning arrester according to the embodiment of the present invention;
fig. 6 is another schematic flow chart of a fault online monitoring method for an arrester according to an embodiment of the present invention;
fig. 7 is a schematic view of a subsequent flow chart of a fault online monitoring method for an arrester according to an embodiment of the present invention;
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The embodiment of the utility model provides a fault on-line monitoring method of arrester, through the report information that one or more feeder terminals are sent including the magnitude of voltage and/or the current value of remote monitoring platform real-time reception through wireless communication module, calculate the difference of magnitude of voltage or current and preset magnitude of voltage or preset current value, and judge whether the difference exceeds preset error range; and if the fault exceeds the preset error range, determining that the arrester where the feeder terminal corresponding to the reported information is located has a fault. Therefore, the position of the fault lightning arrester can be clearly positioned, and when one or more lightning arresters in the power transmission line are damaged, maintenance personnel can quickly maintain the lightning arresters; therefore, the time for troubleshooting fault points one by one in the prior art is greatly saved, the lightning arrester can be prevented from being triggered to cause lightning strike on the transformer or the line, and large-area power failure which is possibly caused can be avoided.
Referring to fig. 1, for the utility model provides a fault on-line monitoring system's of arrester system structure picture, as shown in fig. 1, this arrester fault on-line monitoring system includes remote monitoring platform, a plurality of feeder terminal and a plurality of arrester, and is a plurality of the arrester is equallyd divide and is arranged in 10KV transmission line's transformer, wherein, every feeder terminal is all installed to the arrester, each feeder terminal wireless connection in remote monitoring platform.
In a specific implementation process, as shown in fig. 2, the feeder terminal includes a box body and a box cover, the box cover covers the box body, a packaging plate is detachably mounted on the top of the box body close to the box cover, a circuit main board, a signal control board, a liquid crystal display panel, a wireless communication module, a battery management module and a storage battery are packaged in the box body, wherein the circuit main board is electrically connected with the signal control board, the liquid crystal display panel and the battery management module respectively, the battery management module is electrically connected with the storage battery, and the battery management module is further electrically connected with the signal control board and the liquid crystal display panel; the signal control board is electrically connected with the wireless communication module, and the wireless communication module is in communication connection with the remote monitoring platform.
In the specific implementation process, install voltage sensor, current sensor and connecting terminal on the circuit mainboard, voltage sensor passes through six cores and inserts connection arrester and battery management module by aviation, current sensor connects six cores and prevents the open circuit aviation and insert, the circuit mainboard passes through connecting terminal and is connected by serial ports circuit and liquid crystal display panel communication.
In addition, in the specific implementation process, a remote signaling acquisition circuit and a switching-on/off circuit are installed on the signal control board; the remote signaling acquisition circuit is in communication connection with the circuit main board and the wireless communication module respectively, and the switching-on/off circuit is electrically connected with the circuit main board.
In the specific implementation process, the battery management module has the functions of intelligent charging and discharging management and battery activation management on the storage battery, and can effectively prevent overcharge, overdischarge and passivation of the storage battery; the liquid crystal display can check implementation operation data, check fixed value parameter information and modify fixed values and parameters in place in cooperation with key operation.
Referring to fig. 3, the method for monitoring the fault of the lightning arrester on line is provided in the embodiment of the present application, and is applied to a remote monitoring platform, where the remote monitoring platform is configured to receive information sent by a feeder terminal connected to the lightning arrester and process the information according to the information, and the remote monitoring platform may be composed of a cloud server, and includes a display platform and a computing processing module, which are not described in detail herein.
As shown in fig. 3, the method for online monitoring the fault of the lightning arrester comprises the following steps:
in step S100, report information sent by one or more feeder terminals through the wireless communication module is received in real time.
The reported information at least comprises a voltage value and/or a current value, and the voltage value and the current value are respectively detected by a voltage sensor and a current sensor in the feeder line terminal, so that the voltage value and the current value of the lightning arrester can be detected, and whether the lightning arrester has an overvoltage or overcurrent fault condition or not is judged.
In a specific implementation process, the feeder terminal can send a report message to the remote monitoring platform at intervals, the interval time can be set to 5 seconds, 30 seconds, 1 minute, 5 minutes, 10 minutes and the like, the time can be set according to the number of the feeder terminals arranged on the line, and the increase of the calculation amount of the remote monitoring platform caused by the too short interval time every time is avoided.
In step S200, a difference between the voltage value or the current value and a preset voltage value or a preset current value is calculated.
In a specific implementation process, the preset voltage value or the preset current value refers to a line voltage value or a line current value under the condition that the lightning arrester in the 10KV line has no fault, and generally, a plurality of line voltage values and line current values are measured, and an average value of the line voltage values and the line current values is obtained as the preset voltage value and the preset current value. And obtaining a corresponding voltage difference value or current difference value according to the difference between the voltage value or current value in the step S100 and the preset voltage value or preset current value.
In step S300, it is determined whether the difference exceeds a preset error range.
In the specific implementation process, according to the voltage difference value or the current difference value calculated in step S300, it is determined whether the voltage difference value or the current difference value exceeds a preset error range, where the preset error range is a range formed by a difference between a line voltage value or a line current value when a general lightning arrester fails and a maximum value or a minimum value of the line voltage value or the line current value under a normal condition. And if the difference value does not exceed the preset error range, indicating that the line is normal, continuing to execute the step S100, so as to perform repeated monitoring, and if the difference value exceeds the preset error range, determining that the arrester fault occurs, and executing the step S400.
In step S400, it is determined that the lightning arrester where the feeder terminal corresponding to the reported information is located has a fault.
Because the remote monitoring platform is adopted to monitor the fault condition of each lightning arrester in real time, once a certain lightning arrester has a fault, the fault of the lightning arrester can be quickly judged and the position of the fault lightning arrester can be quickly positioned, so that when one or more lightning arresters in the power transmission line are damaged, the remote monitoring platform can quickly determine the specific position of the fault lightning arrester and the maintenance personnel can quickly maintain the lightning arrester; therefore, the time for troubleshooting fault points one by one in the prior art is greatly saved, the fault arrester can be replaced quickly, the condition that the transformer or the line is struck by lightning caused by the fault arrester can be avoided to the maximum extent, and large-area power failure possibly caused can be avoided.
Referring to fig. 4, a schematic flow chart of the online fault monitoring method for an arrester is shown, and the online fault monitoring method for an arrester further details the step S400. As shown in fig. 4, step S400 further includes the steps of:
step S401: and acquiring the coded information of the arrester where the feeder terminal is located, which corresponds to the reported information.
In the specific implementation process, in different 10KV transmission lines, generally, in order to indicate that different transmission lines are all provided with line codes, the line codes can be labeled by three decimal codes, and the same line may be provided with tens of thousands of arresters, so the same arrester can be labeled by five decimal codes, of course, each arrester also has its own identification code, and the identification code can also be used as a code on the same line, so the coded information of the arrester at least comprises the line code and the identification code, and the installation position of each arrester in the preset 10KV transmission line corresponds to the coded information. Therefore, the code information of the arrester with the fault can be sent to the remote monitoring platform by the feeder terminal.
Step S402: and searching the arrester number corresponding to the coded information and the geographical position coordinate of the arrester from a preset database.
In the specific implementation process, the lightning arrester model, the lightning arrester code and the geographic position coordinate of the lightning arrester are stored in the preset database, the preset database at least comprises the lightning arrester model, the lightning arrester serial number and the geographic position coordinate of the lightning arrester in one-to-one correspondence, and the coded information corresponds to the lightning arrester model, the lightning arrester serial number and the geographic position coordinate, so that the corresponding lightning arrester model and the geographic position coordinate corresponding to the lightning arrester can be known after the coded information of the lightning arrester is obtained.
In addition, in the implementation process, as shown in fig. 5, the step S400 further includes:
step S403: and presetting line identification codes of different 10KV power transmission lines according to different 10KV power transmission lines.
In a specific implementation process, the line identification codes corresponding to different 10KV transmission lines are unique, and are not specifically described in detail herein.
Step S404: different numbers are set according to different arresters in the same 10KV power transmission line, and the coded information consists of a line identification code and an arrester number.
Referring to fig. 6, a schematic flow chart of an online fault monitoring method for an arrester is shown, and as shown in fig. 6, the online fault monitoring method for the arrester includes the following steps:
step S100: and receiving the reported information sent by one or more feeder terminals through the wireless communication module in real time.
Step S200: and calculating the difference value between the voltage value or the current value and a preset voltage value or a preset current value.
Step S300: and judging whether the difference value exceeds a preset error range. If the difference does not exceed the preset error range, the step S100 is repeatedly executed, and if the difference exceeds the preset error range, the step S301 is executed.
In step S301, when the difference exceeds a preset error range, timing is started.
In a specific implementation process, a timer is arranged in the feeder terminal, and when the difference exceeds a preset error range, the timer starts to time, and calculates the time to be recorded as first time.
In step S302, it is determined whether all the collected and calculated differences are beyond a preset error range within a preset time.
In the specific implementation process, in the normal operation process of the power transmission line, the lightning arrester can bear certain instantaneous voltage or instantaneous current, and the lightning arrester can be in a fault state, such as damage, if the instantaneous voltage or instantaneous current is too long, therefore, the step S301 can be used for timing to judge whether the condition that the difference value between the voltage value or the current value calculated in the step S200 and the preset voltage value or the preset current value is in the preset error range is a short period of time or is in the state for a long time, therefore, if the preset timing time, namely the first timing time, is in the condition of 5S, the difference value exceeds the preset error range, the lightning arrester can be judged to be in a fault state, otherwise, the fault is probably caused by surge voltage generated in the period of time, but not caused by the fault of the lightning arrester.
Step S400: and determining that the lightning arrester of the feeder terminal corresponding to the reported information has a fault.
Reference is made to the above-described embodiments, which are not explicitly described in this embodiment, and which are not set forth in detail herein.
By adopting the online fault monitoring method for the lightning arrester, provided by the embodiment of the application, whether the calculated line voltage or line current exceeds the preset range for a long time can be judged, so that whether the fault of the lightning arrester occurs or not is definitely judged, and the occurrence of false alarm or misoperation caused by the change of instantaneous voltage or instantaneous current is avoided.
In the specific implementation process, when the arrester is determined to have a fault, the existing arrester does not have the self-recovery function, and the arrester still needs to be manually replaced by a new arrester. Accordingly, reference may be made to the further flow chart of step S400 shown in fig. 7. As shown in fig. 7, step S500 further includes the steps of:
step S405: and searching the information of maintenance personnel administered by the transformer corresponding to the lightning arrester.
In the specific implementation process, a certain maintenance person or a certain maintenance department is generally responsible for transformer maintenance and troubleshooting in certain areas, and corresponding maintenance persons of the transformers and the lightning arresters generally issue and inform information through separate communication tools, for example: the maintenance personnel can receive the maintenance information issued by the remote monitoring platform through mobile phone short messages or WeChat and the like.
In the specific implementation process, when the fault arrester is determined, because each transformer is provided with a plurality of arresters, and maintenance personnel all correspond and are responsible for a plurality of transformers and the arresters that correspond, therefore, each maintenance personnel all corresponds and is responsible for corresponding arresters, if each maintenance personnel's cell-phone all corresponds a plurality of arresters, in case a certain arrester breaks down, then remote monitoring platform looks for the maintainer's cell-phone number that corresponds with this arrester through the database, thereby send corresponding maintenance information to in the maintainer's cell-phone.
Step S406: and pushing maintenance information to the maintenance personnel, and maintaining by the maintenance personnel.
In the specific implementation process, the maintenance information comprises arrester alarm signals, arrester models, arrester serial numbers and geographical position coordinates corresponding to the fault arresters, so that maintenance personnel can replace the corresponding arresters according to the maintenance information, and the serial numbers, the model numbers and the geographical position coordinates of the arresters can be rapidly known, so that the fault arresters can be rapidly processed.
The above is a detailed description of the fault on-line monitoring method for the lightning arrester, and the above embodiments are mutually incorporated and referred to, and the contents which are not described in detail are not elaborated again, and can be referred to each other.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (4)
1. An on-line fault monitoring system for lightning arresters is characterized by comprising a remote monitoring platform, a plurality of feeder terminals and a plurality of lightning arresters, wherein the lightning arresters are uniformly distributed in a transformer of a 10KV power transmission line,
and each lightning arrester is provided with a feeder terminal, and each feeder terminal is wirelessly connected to the remote monitoring platform.
2. The on-line fault monitoring system of claim 1, wherein the feeder terminal comprises a box body and a box cover, the box cover covers the box body, a packaging board is detachably mounted on the top of the box body close to the box cover, a circuit main board, a signal control board, a liquid crystal display panel, a wireless communication module, a battery management module and a storage battery are packaged in the box body, wherein,
the circuit main board is respectively and electrically connected with the signal control board, the liquid crystal display panel and the battery management module, the battery management module is electrically connected with the storage battery, and the battery management module is also electrically connected with the signal control board and the liquid crystal display panel;
the signal control board is electrically connected with the wireless communication module, and the wireless communication module is in communication connection with the remote monitoring platform.
3. The system according to claim 2, wherein the circuit board is mounted with a voltage sensor, a current sensor and a connection terminal, the voltage sensor is connected with the lightning arrester and the battery management module through a six-core aerial plug, the current sensor is connected with a six-core anti-open aerial plug, and the circuit board is connected with the liquid crystal display panel through the connection terminal by a serial port line.
4. The online fault monitoring system according to claim 3, wherein the signal control board is provided with a remote signaling acquisition circuit and a switching-on/off circuit; wherein the content of the first and second substances,
the remote signaling acquisition circuit is in communication connection with the circuit main board and the wireless communication module respectively, and the opening and closing circuit is electrically connected with the circuit main board.
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| CN201922136280.XU CN212008766U (en) | 2019-12-03 | 2019-12-03 | Fault on-line monitoring system of lightning arrester |
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| CN201922136280.XU CN212008766U (en) | 2019-12-03 | 2019-12-03 | Fault on-line monitoring system of lightning arrester |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114113886A (en) * | 2021-11-22 | 2022-03-01 | 海南电网有限责任公司万宁供电局 | Lightning stroke broken line detection device based on 10kV overhead line |
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2019
- 2019-12-03 CN CN201922136280.XU patent/CN212008766U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114113886A (en) * | 2021-11-22 | 2022-03-01 | 海南电网有限责任公司万宁供电局 | Lightning stroke broken line detection device based on 10kV overhead line |
| CN114113886B (en) * | 2021-11-22 | 2023-11-28 | 海南电网有限责任公司万宁供电局 | Lightning stroke broken line detection device based on 10kV overhead line |
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