CN111929490A - Remote monitoring device for lightning stroke action of lightning arrester - Google Patents
Remote monitoring device for lightning stroke action of lightning arrester Download PDFInfo
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- CN111929490A CN111929490A CN202010868208.0A CN202010868208A CN111929490A CN 111929490 A CN111929490 A CN 111929490A CN 202010868208 A CN202010868208 A CN 202010868208A CN 111929490 A CN111929490 A CN 111929490A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/17—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values giving an indication of the number of times this occurs, i.e. multi-channel analysers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
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Abstract
The application discloses remote monitoring device of arrester thunderbolt action, including power supply unit, discharge monitoring equipment and sampling coil. The power supply equipment is used for outputting electric energy required by normal work of the discharge monitoring equipment to the discharge monitoring equipment; the sampling coil is used for collecting the current of the lightning arrester; the discharging monitoring equipment is used for monitoring the current, and sending lightning stroke action information to the remote server when the lightning arrester is found to have lightning stroke action so that the remote server can record the times of accumulated actions. Through the record to the action of thunderbolt, can confirm effectively whether corresponding arrester reaches life.
Description
Technical Field
The application relates to the technical field of electric equipment, more specifically say, relate to a remote monitoring device of arrester thunderbolt action.
Background
The lightning arrester is a lightning protection device of an overhead transmission line, and when the overhead transmission line is struck by lightning, the lightning arrester acts to discharge lightning current so as to protect the transmission line. The lightning arrester has a service life in the use process, namely the lightning arrester can bear the most lightning stroke actions, when the service life is over, the lightning arrester needs to be tested or replaced, generally, after 20 lightning stroke actions, a direct current test needs to be carried out, the lightning arrester which is unqualified in the test needs to be replaced, otherwise, the lightning arrester can be out of order due to the fact that the service life is exceeded, and lightning protection failure is caused.
In order to prevent the lightning arresters from losing efficacy due to the fact that the service life of the lightning arresters is prolonged, lightning stroke actions of each lightning arrester need to be tracked and counted, a counter of the existing lightning arresters is mechanical, the counter has a large defect in use, only 10 times of discharging can be recorded by means of the number of times of rotating a pointer of a mechanical dial plate for one circle, the pointer returns to zero and starts to circulate again after 10 times of exceeding, more times cannot be recorded, the phenomenon that the lightning arrester fails due to the fact that the lightning arrester is not tested or replaced after the service life is prolonged easily occurs, and therefore the number of the lightning stroke actions of the lightning arresters needs to be monitored in.
Disclosure of Invention
In view of this, the present application provides a remote monitoring device for lightning stroke actions of an arrester, which is used for monitoring and recording the lightning stroke actions of the corresponding arrester in real time.
In order to achieve the above object, the following solutions are proposed:
the utility model provides a remote monitoring device of arrester thunderbolt action, includes power supply unit, discharge monitoring equipment and sampling coil, wherein:
the power supply equipment is used for outputting electric energy required by normal work of the discharge monitoring equipment to the discharge monitoring equipment;
the sampling coil is used for collecting the current of the lightning arrester;
and the discharge monitoring equipment is used for monitoring the current, and sending lightning stroke action information to a remote server when the lightning stroke action of the lightning arrester is found so as to enable the remote server to record the times of the accumulated action.
Optionally, the power supply device is a photovoltaic device.
Optionally, the sampling coil is a rogowski coil.
Optionally, the discharge detection device includes a control module, a power module, a signal acquisition module, a data processing module and a communication module, wherein:
the power supply module is electrically connected with the power supply equipment and is used for respectively providing electric energy required by work for the control module, the signal acquisition module, the data processing module and the communication module;
the signal acquisition module is used for acquiring the current of the lightning arrester based on the control instruction of the control module to obtain a current signal;
the data processing module is used for processing the current signal to obtain lightning stroke action information reflecting the lightning stroke action of the lightning arrester;
the communication module is used for sending the lightning stroke action information to the remote server so as to enable the remote server to record the times of lightning stroke actions of the lightning arrester.
Optionally, the data processing module includes a signal amplifying circuit, a filter circuit, and an integration processing circuit.
Optionally, the communication module is further configured to upload part or all of the point statistical data, the temperature data, the humidity data, and the device operating information to the remote server.
Optionally, the communication module is a wireless communication module.
Optionally, the signal acquisition module is internally provided with an impact signal generator.
Optionally, the remote server is configured to send the accumulated action information to a data terminal of an operation and maintenance worker.
According to the technical scheme, the application discloses a lightning arrester lightning stroke action remote monitoring device, which comprises power supply equipment, discharge monitoring equipment and a sampling coil. The power supply equipment is used for outputting electric energy required by normal work of the discharge monitoring equipment to the discharge monitoring equipment; the sampling coil is used for collecting the current of the lightning arrester; the discharging monitoring equipment is used for monitoring the current, and sending lightning stroke action information to the remote server when the lightning arrester is found to have lightning stroke action so that the remote server can record the times of accumulated actions. Through the record to the action of thunderbolt, can confirm effectively whether corresponding arrester reaches life.
Drawings
In order to more clearly illustrate the embodiments of the present application 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, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a block diagram of a remote monitoring device for lightning stroke action of an arrester according to an embodiment of the present application;
FIG. 2 is a schematic view of an installation of a remote monitoring device according to an embodiment of the present application;
fig. 3 is a block diagram of a discharge monitoring device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Examples
Fig. 1 is a block diagram of a remote monitoring device for lightning stroke actions of an arrester according to an embodiment of the present application.
As shown in fig. 1, the remote monitoring device provided in this embodiment is used for monitoring lightning stroke actions of the lightning arrester installed on the overhead transmission line, and by monitoring and recording the number of times of lightning stroke actions performed by the corresponding lightning arrester due to lightning stroke, and by counting the number of times, the service life of the lightning arrester is grasped. The remote monitoring device comprises a power supply device 10, a discharge monitoring device 20 and a sampling coil 30.
The power supply device is used for supplying power to the discharge monitoring device, and the power supply device in the present application adopts a photovoltaic device arranged on the cross arm, as shown in fig. 2, that is, a solar power generation device utilizing solar power generation, and the photovoltaic device specifically includes a photovoltaic module for power generation and a battery pack for storing electric energy. When the photovoltaic module outputs electric energy in the presence of sunlight, part of the electric energy output by the photovoltaic module can be stored by using the battery pack while supplying power to the discharge monitoring equipment. The battery pack supplies power to the discharge monitoring device when there is no positive power.
The sampling coil is in signal connection with the discharge monitoring equipment and is used for detecting the current of the lightning arrester. The rogowski coil is selected for the sampling coil in the application. Rogowski Coil (Rogowski Coil), also known as Rogowski Coil, is an air core Coil used in current sensors/current probes for measuring ac high current, high pulse current.
The coil can measure alternating current signal frequencies from less than 0.1Hz to several tens of MHz of alternating current signals. Meanwhile, the measurable current range is very wide, and alternating current ranging from a few milliamperes (mA) to million amperes (1000kA) can be measured.
The rogowski coil is generally composed of two parts, a coil and a signal processing circuit. The coil is made by winding a plurality of turns of conducting wires on a non-ferromagnetic material with a certain shape and size in a uniform and symmetrical mode, a primary side conductor vertically penetrates through the center of a framework, when variable current flows through the conductor, a variable magnetic field is generated around the conductor, and the output end of the coil generates induced electromotive force according to the electromagnetic induction principle.
The discharge monitoring equipment realizes the detection of the current value of the current flowing through the lightning arrester by processing the signal output by the Rogowski coil, and can detect whether the lightning arrester is struck by lightning or not by detecting the current value.
The discharge monitoring device comprises a control module 21, a power supply module 22, a signal acquisition module 23, a data processing module 24 and a communication module 25, as shown in fig. 3. The control module is electrically connected with the power module and is respectively in signal connection with the signal acquisition module, the data processing module and the communication module.
The power supply module is electrically connected with the power supply equipment and used for supplying power to the control module, the signal acquisition module, the data processing module and the communication module based on electric energy output by the photovoltaic assembly or the battery pack in the power supply equipment.
The signal acquisition module is in signal connection with the sampling coil and is used for acquiring a current signal output by the sampling coil. The control module performs analog-to-digital conversion on the current signal and outputs the obtained digitized current signal to the data processing module. The module is internally provided with an impact signal generator for simulating a lightning stroke action signal, so that the device has a self-checking function.
The data processing module is used for processing the current signal so as to obtain the current value of the current flowing through the lightning arrester, and the current value is output to the communication module through the control module. The module comprises a signal amplifying circuit, a filter circuit and an integral processing circuit. The current signal output by the signal acquisition module is subjected to amplification by the amplification circuit, filtering processing by the filter circuit and integration processing by the integration processing circuit, so that the amplitude of the current signal can be further processed.
And after receiving the current value forwarded by the control module, the communication module sends the current value to the remote server in a wired or wireless manner. The remote server monitors the current value, when the current value is larger than a certain threshold value, the lightning stroke action can be determined to occur once, and the lightning stroke action times are recorded and counted to determine whether the lightning arrester reaches the service life or not.
In addition, the communication module is used for sending part or all of locally detected point statistical data, temperature data, humidity data and equipment working information to a remote server in addition to sending the current value. The remote server can also send the accumulated action information to a data terminal of the operation and maintenance personnel, such as a computer terminal or a mobile device, so that the operation and maintenance personnel can obtain corresponding information at any time.
According to the technical scheme, the lightning stroke action remote monitoring device for the lightning arrester comprises power supply equipment, discharge monitoring equipment and a sampling coil. The power supply equipment is used for outputting electric energy required by normal work of the discharge monitoring equipment to the discharge monitoring equipment; the sampling coil is used for collecting the current of the lightning arrester; the discharging monitoring equipment is used for monitoring the current, and sending lightning stroke action information to the remote server when the lightning arrester is found to have lightning stroke action so that the remote server can record the times of accumulated actions. Through the record to the action of thunderbolt, can confirm effectively whether corresponding arrester reaches life.
The lightning arrester has a remote transmission function, and when the lightning arrester operates and discharges, the equipment actively uploads data, so that the situation that the lightning arrester is manually climbed to be checked is avoided; the invention adopts the software threshold, can remotely modify the threshold, and adjust the sensitivity of the discharge monitoring device according to the actual situation, thereby improving the practicability of the equipment;
an impact signal generator is arranged in the acquisition module to simulate a lightning action signal, so that the device has a self-checking function, and reliable and accurate monitoring of lightning action information of an instrument is ensured; the lightning arrester lightning stroke action monitoring method has the advantages that the lightning arrester lightning stroke action monitoring timeliness is achieved, the real-time monitoring of the lightning stroke action times can be achieved, after the action early warning times are set, when the lightning stroke action times reach a set value (generally 20 times), the overtime early warning is sent out, and the situation that the lightning arrester is not tested for an overtime or loses protection to a line after the service life is prolonged is prevented;
the invention solves the problems that the existing discharge counter can only record the number of times of the mechanical dial pointer rotating for a circle, namely 10 times of discharge, and the pointer rotates back for 1 time to start circulation again after the number of times is exceeded, so that more times of discharge cannot be recorded;
the invention adopts an active acquisition mode, can remotely count the discharge times in real time, can acquire the discharge intensity, obtains more comprehensive data, provides a multifunctional monitoring and data statistics convenient device for the lightning protection of the power transmission line, better realizes the monitoring and counting of the discharge condition of the power transmission line and provides basic data for the optimized application of the lightning arrester of the power transmission line and the lightning protection research.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
While preferred embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the embodiments of the invention.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal 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 terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.
The technical solutions provided by the present invention are described in detail above, and the principle and the implementation of the present invention are explained in this document by applying specific examples, and the descriptions of the above examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (9)
1. The utility model provides a remote monitoring device of arrester thunderbolt action which characterized in that includes power supply unit, discharge monitoring equipment and sampling coil, wherein:
the power supply equipment is used for outputting electric energy required by normal work of the discharge monitoring equipment to the discharge monitoring equipment;
the sampling coil is used for collecting the current of the lightning arrester;
and the discharge monitoring equipment is used for monitoring the current, and sending lightning stroke action information to a remote server when the lightning stroke action of the lightning arrester is found so as to enable the remote server to record the times of the accumulated action.
2. The remote monitoring device according to claim 1, wherein the power supply equipment is photovoltaic equipment.
3. The remote monitoring device of claim 1, wherein the sampling coil is a rogowski coil.
4. The remote monitoring device according to claim 1, wherein the discharge detection apparatus comprises a control module, a power module, a signal acquisition module, a data processing module, and a communication module, wherein:
the power supply module is electrically connected with the power supply equipment and is used for respectively providing electric energy required by work for the control module, the signal acquisition module, the data processing module and the communication module;
the signal acquisition module is used for acquiring the current of the lightning arrester based on the control instruction of the control module to obtain a current signal;
the data processing module is used for processing the current signal to obtain lightning stroke action information reflecting the lightning stroke action of the lightning arrester;
the communication module is used for sending the lightning stroke action information to the remote server so as to enable the remote server to record the times of lightning stroke actions of the lightning arrester.
5. The remote monitoring device according to claim 4, wherein the data processing module comprises a signal amplification circuit, a filtering circuit, and an integration processing circuit.
6. The remote monitoring device of claim 4, wherein the communication module is further configured to upload some or all of point statistics, temperature data, humidity data, and equipment operational information to the remote server.
7. The remote monitoring device of claim 4, wherein the communication module is a wireless communication module.
8. The remote monitoring device according to claim 4, wherein the signal acquisition module has a shock signal generator built therein.
9. The remote monitoring device according to claim 1, wherein the remote server is configured to send the accumulated motion information to a data terminal of an operation and maintenance person.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010868208.0A CN111929490A (en) | 2020-08-26 | 2020-08-26 | Remote monitoring device for lightning stroke action of lightning arrester |
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| CN202010868208.0A CN111929490A (en) | 2020-08-26 | 2020-08-26 | Remote monitoring device for lightning stroke action of lightning arrester |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113419127A (en) * | 2021-06-23 | 2021-09-21 | 中国南方电网有限责任公司超高压输电公司贵阳局 | Lightning arrester state monitoring method, device, equipment and storage medium |
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| CN102998511A (en) * | 2012-10-29 | 2013-03-27 | 中国电力科学研究院 | Discharge current monitoring device of lightning arrester |
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Application publication date: 20201113 |