CN208833872U - Arrester detecting device and system - Google Patents
Arrester detecting device and system Download PDFInfo
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- CN208833872U CN208833872U CN201821494928.XU CN201821494928U CN208833872U CN 208833872 U CN208833872 U CN 208833872U CN 201821494928 U CN201821494928 U CN 201821494928U CN 208833872 U CN208833872 U CN 208833872U
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Abstract
This application discloses a kind of arrester detecting device and systems.The arrester detecting device includes signal acquisition unit, counting unit and alarm unit；The signal acquisition unit is arranged on the ground path of arrester, for acquiring lightning strike signals；The counting unit is connect with the signal acquisition unit, for counting to the collected lightning strike signals of the signal acquisition unit；The alarm unit is connect with the counting unit, and the quantity of the lightning strike signals for counting in the counting unit sends alarm signal when being greater than preset quantity threshold value.Arrester detecting device described herein can accurately and timely detect the number that arrester is struck by lightning.
Description
Technical field
This application involves arrester checks technical fields, in particular to a kind of arrester detecting device and system.
Background technique
High transient overvoltage harm when arrester is for protecting electrical equipment against lightning stroke, and time of afterflow is limited,
A kind of often electric appliance of limitation afterflow assignment.Arrester is connected between cable and the earth, usually in parallel with protected device.It is lightning-arrest
Device can be effectively protected power equipment, once there is abnormal voltage, arrester will be acted, and play a protective role.When
When electric power cable or equipment are run under normal working voltage, arrester will not generate effect, be considered as open circuit for ground.One
There is high voltage in denier, and when jeopardizing protected device insulation, arrester acts immediately, by high-voltage impact conduct current the earth,
To limit voltage magnitude, electric power cable and apparatus insulated is protected.After having served as loss of voltage, arrester restores to the original state rapidly, makes
Power circuit works normally.
State of insulation is presented under normal system operating voltage in arrester.It is just presented under the effect of overvoltage high current
Low resistance, to limit the residual voltage at arrester both ends.But arrester is in use, service life and number of lightning strokes
It is positively correlated.When reaching the arrester of service life and being struck by lightning, the transient current for flowing through it is very big and very unstable.
However, in the prior art, and there is no a kind of effective devices to detect time that arrester is struck by lightning in time
Number.
Utility model content
In order to overcome at least one above-mentioned deficiency in the prior art, the application's is designed to provide a kind of arrester inspection
Device is surveyed, described device includes signal acquisition unit, counting unit and alarm unit；
The signal acquisition unit is arranged on the ground path of arrester, for acquiring lightning strike signals；
The counting unit is connect with the signal acquisition unit, for the collected lightning stroke of the signal acquisition unit
Signal is counted；
The alarm unit is connect with the counting unit, the quantity of the lightning strike signals for counting in the counting unit
Alarm signal is sent when greater than preset quantity threshold value.
Optionally, the counting unit includes trigger module and counting module, the trigger module respectively with the signal
Acquisition unit and counting module connection, for generating trigger signal according to the lightning strike signals, and trigger the counting
Module is counted.
Optionally, the trigger module further includes sample circuit and trigger signal generative circuit, the sample circuit and institute
Signal acquisition unit connection is stated, for obtaining sampled signal according to preset sample frequency；
The trigger signal generative circuit is connect with the sample circuit, for calculating default adopt according to the sampled signal
Collect the average current value in the period, and when the average current value is greater than predetermined current threshold, generates trigger signal control
The counting module counts.
Optionally, the alarm unit includes processing module and alarm module, the processing module respectively with the alarm
Module and counting unit connection, the quantity of lightning strike signals of the processing module for counting in the counting unit are big
When preset quantity threshold value, controls the alarm module and send alarm signal.
Optionally, the alarm module is communication module, for communicating under the control of processing module with host computer.
Optionally, described device further includes locating module, and the processing module is also connect with the locating module, and being used for will
The location information of arrester detecting device is sent to the host computer.
Optionally, the alarm unit includes display module, and the display module is connect with the processing module, for showing
Show the quantity of lightning strike signals.
Optionally, the signal acquisition unit includes detection module and adjustment module, and the adjustment module is separately connected institute
Detection module and the counting unit are stated, for adjusting the lightning strike signals of detection module acquisition and by lightning stroke adjusted
Signal sends the counting unit to.
Optionally, the signal acquisition unit includes current transformer, and the current transformer and the counting unit connect
It connects.
The another object of the application is to provide a kind of arrester checks system, the system comprises host computer and such as with
Upper described in any item arrester detecting devices, the arrester detecting device and the host computer communicate to connect.
In terms of existing technologies, the application has the advantages that
The arrester detecting device of the embodiment of the present application by the setting signal acquisition unit on the ground path of arrester,
And connect signal acquisition unit with counting unit, then counting unit is connect with alarm unit, according to signal acquisition unit
The lightning strike signals detected count, pass through counting unit statistical counting result and count results are sent to alarm unit.Such as
This, timely and effective can detect the number that arrester is struck by lightning.
Detailed description of the invention
Technical solution in ord to more clearly illustrate embodiments of the present application, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only some embodiments of the application, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the structural schematic diagram one of arrester detecting device provided by the embodiments of the present application；
Fig. 2 is the structural schematic diagram two of arrester detecting device provided by the embodiments of the present application；
Fig. 3 is the structural schematic diagram three of arrester detecting device provided by the embodiments of the present application；
Fig. 4 is the structural schematic diagram four of arrester detecting device provided by the embodiments of the present application；
Fig. 5 is the structural schematic diagram five of arrester detecting device provided by the embodiments of the present application；
Fig. 6 is the structural schematic diagram six of arrester detecting device provided by the embodiments of the present application.
Icon: 1- signal acquisition unit；11- current transformer；12- detection module；13- adjusts module；2- counting unit；
21- trigger module；211- sample circuit；212- trigger signal generative circuit；22- counting module；3- alarm unit；31- processing
Module；32- alarm module；33- communication module；34- locating module；35- display module.
Specific embodiment
To keep the purposes, technical schemes and advantages of the embodiment of the present application clearer, below in conjunction with the embodiment of the present application
In attached drawing, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described embodiment is
Some embodiments of the present application, instead of all the embodiments.The application being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiments herein provided in the accompanying drawings is not intended to limit below claimed
Scope of the present application, but be merely representative of the selected embodiment of the application.Based on the embodiment in the application, this field is common
Technical staff's every other embodiment obtained without creative efforts belongs to the model of the application protection
It encloses.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the present application, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " setting ",
" installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be fixedly connected, may be a detachable connection or one
Connect to body；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, it can also be indirect by intermediary
It is connected, can be the connection inside two elements.For the ordinary skill in the art, on being understood with concrete condition
State the concrete meaning of term in this application.
Fig. 1 is please referred to, Fig. 1 is the structural block diagram of arrester detecting device provided by the embodiments of the present application, the present embodiment institute
It states arrester detecting device to be powered by power supply module, arrester detecting device includes signal acquisition unit 1, counting unit
2 and alarm unit 3.
Signal acquisition unit 1, counting unit 2 and alarm unit 3 are sequentially connected.The setting of signal acquisition unit 1 is lightning-arrest
On the ground path of device, for acquiring lightning strike signals, lightning strike signals that counting unit 2 is used to acquire signal acquisition unit 1 into
Row counts, and counts the quantity of lightning strike signals, i.e. the number (number of lightning strokes) that is struck by lightning of arrester.Alarm unit 3, which obtains, counts list
The number of lightning strokes that member 2 is counted, and when the number of lightning strokes is more than preset quantity threshold value, send alarm signal.
For example, arrester detecting device is at work, if arrester detecting device arrester detected is by thunder and lightning
It hits, then will there is electric current to pass through on the ground path of the arrester.At this point, signal acquisition unit 1 will collect the thunder
Signal is hit, so that counter unit be made once to be counted.Arrester is every to be hit once by thunder and lightning, and counting unit 2 will remember one
Number.When the lightning stroke quantity that counting unit 2 is counted reaches preset quantity threshold value, alarm unit 3 will send alarm signal.
Lightning strike signals in the present embodiment can be used for judging arrester whether by the signal in lightning stroke, for example, lightning stroke
Signal may be, but not limited to, current signal or voltage signal etc..
Preset quantity threshold value in the present embodiment can be the preset number of lightning strokes of actual conditions according to arrester
It is the value alarmed for how many when.
For example, can be set according to the number of lightning strokes maximum value that arrester can bear, when the lightning stroke of arrester
When number maximum can reach n times, preset quantity threshold value can be set to N or N-1 etc..
Optionally, in the present embodiment, the signal acquisition unit 1 is current transformer 11, the current transformer 11 with
The counting unit 2 connects.
In the present embodiment, it is contemplated that when arrester is hit by thunder and lightning, arrester can be connected to by charge guiding the earth, because
This, has electric current presence on the ground path of arrester.When electric current flows through the ground path of arrester, on current transformer 11
Can sense has electric current to flow through on the ground path of arrester, to generate lightning strike signals.Therefore it can be using electricity in the present embodiment
Whether current transformer 11 has electric current to flow through on the ground path to detect arrester.
When having electric current on current transformer 11,11 flip-flop number unit 2 of current transformer is counted.For example, when electricity
Electric current is begun on current transformer 11 to flow through up to current vanishes on the primary current mutual inductor 11, carries out counting unit 2 once
It counts.Alternatively, working as electric current on current transformer 11 starts to reach a certain current threshold up to electric current on the primary current mutual inductor 11
When less than the current threshold, count counting unit 2 once.
Optionally, in the present embodiment, the signal acquisition unit 1 also may include detection module 12 and adjustment module 13,
The adjustment module 13 is separately connected the detection module 12 and the counting unit 2, for adjusting the detection module 12
The lightning strike signals of acquisition simultaneously send lightning strike signals adjusted to the counting unit 2.
In the present embodiment, it is contemplated that when arrester is struck by lightning, it is very short to flow through the arrester ground route duration, and wave
Dynamic range is big, therefore the signal acquisition unit 1 in the present embodiment may include detection module 12 and adjustment module 13.Wherein detect mould
Block 12 is for detecting lightning strike signals, and adjustment module 13 is for adjusting lightning strike signals, will test the lightning stroke letter that module 12 detects
Number it is adjusted to size appropriate, lightning strike signals is avoided to damage subsequent conditioning circuit.For example, the adjustment module 13 can be increasing
Beneficial module etc..
In the present embodiment, signal acquisition unit 1 can also include filter module, and the filter module is mutual for filtering out electric current
Interference signal in the current signal detected of sensor 11.
When current transformer 11 includes current transformer 11, filter module is connect with current transformer 11, filter module
It is connect with counting unit 2.
When current transformer 11 includes detection module 12 and adjustment module 13, filter module be can connect in detection module
Between 12 and adjustment module 13, adjustment module 13 is connect with counting unit 2.
By the way that filter module is arranged in signal acquisition unit 1, the thunder and lightning signal for being transmitted to counting module 22 can be eliminated
In interference signal, avoid arrester detecting device miscount.
Optionally, in the present embodiment, the counting unit 2 may include trigger module 21 and counting module 22, the touching
Hair module 21 is used for the touching in trigger signal for generating the trigger signal that flip-flop number module 22 is counted, counting module 22
It gives and is counted.The trigger module 21 is connect with the signal acquisition unit 1, is acquired for receiving signal acquisition unit 1
Lightning strike signals, and according to the lightning strike signals generate trigger signal.Counting module 22 is connect with trigger module 21, for according to touching
The triggering of signalling is counted, i.e. statistics number of lightning strokes.
For example, trigger module 21 is connect with current transformer 11 when signal detection module 12 is current transformer 11.Electricity
The signal that current transformer 11 acquires is lightning strike signals, is flowed through when beginning with electric current on current transformer 11 until the primary current is mutual
Current vanishes on sensor 11 make trigger module 21 generate the trigger signal that flip-flop number unit 2 is once counted.
Start to reach a certain current threshold until the primary current mutual inductor 11 powers on alternatively, working as electric current on current transformer 11
When stream is less than the current threshold, trigger module 21 is made to generate the trigger signal that flip-flop number unit 2 is once counted.
When signal acquisition unit 1 includes detection module 12 and adjustment module 13, trigger module 21 is connect with adjustment module 13.
The signal that current transformer 11 acquires is lightning strike signals, when the output signal of adjustment module 13 starts to reach a certain
Preset output threshold value makes trigger module 21 generate touching until when the output signal of this time adjustment module 13 is less than the output threshold value
The trigger signal that hair counting unit 2 is once counted.
In the present embodiment, when due to arrester in by lightning stroke, lightning strike signals can be generated, trigger module 21 is just according to the thunder
It hits signal and generates a trigger signal, so that flip-flop number module 22 is once counted.Wherein, trigger signal either,
But it is not limited to, high level signal, low level signal, rising edge signal or failing edge signal.
Specifically, the trigger module 21 in the present embodiment further includes sample circuit 211 and trigger signal generative circuit 212,
The sample circuit 211 is connect with the signal acquisition unit 1, for obtaining sampled signal according to preset sample frequency；For example,
When signal acquisition unit 1 includes current transformer 11, sample circuit 211 is connect with current transformer 11.When signal acquisition list
When member 1 includes detection module 12 and adjustment module 13, sample circuit 211 is connect with adjustment module 13, wherein sample circuit 211
It is sampled from adjusted module 13 lightning strike signals adjusted.
For example, then being adopted when sample circuit 211 detects that the value of lightning strike signals at a time is within the scope of preset signals
Collect multiple values of the lightning strike signals in the latter preset time period of the lightning strike signals.
In the present embodiment, when due to arrester in by lightning stroke, lightning strike signals can be generated, sample circuit 211 is just according to pre-
If sample frequency acquire lightning strike signals, if the average value of lightning strike signals of the Acquisition Circuit 211 in certain preset duration
Greater than predetermined current threshold, trigger signal generation module 212 just generates a trigger signal according to the average value, to trigger meter
Digital-to-analogue block 22 is once counted.Wherein, trigger signal may be, but not limited to, high level signal, low level signal, rising
Along signal or failing edge signal etc..
The trigger signal generative circuit 212 is connect with the sample circuit 211, for being calculated according to the sampled signal
Average current value in default acquisition time section, and when the average current value is greater than predetermined current threshold, generate triggering letter
Number control counting module 22 counts.
In the present embodiment, by being sampled to the average current in a period of time, and calculate in default acquisition time section
Average current, the lightning strike signals of fluctuation can be converted to relatively stable signal, in this way, can be to avoid electric in the short time
The number of lightning strokes mistake that counting module 22 caused by stream fluctuation counts.It can also be to avoid counting module 22 caused by interference signal etc.
The problem of the number of lightning strokes mistake of statistics guarantees the accuracy of number of lightning strokes statistics.
In the present embodiment, the acquisition time Duan Weiyu lightning strike signals possible duration corresponding (same or similar) is preset
One time span.
Optionally, in the present embodiment, the alarm unit 3 includes processing module 31 and alarm module 32, the processing mould
Block 31 is connect with the alarm module 32 and the counting unit 2 respectively, and the processing module 31 is used for single in the counting
When the quantity of the lightning strike signals of 2 statistics of member is greater than preset quantity threshold value, controls the alarm module 32 and send alarm signal.
For example, when counting unit 2 includes trigger module 21 and counting module 22, by processing module 31 and counting module 22
Connection.
In the present embodiment, alarm unit 3 includes processing module 31 and alarm module 32, in this way, can be by handling mould
The number of lightning strokes that block 31 counts counting unit 2 is handled, thus when the number of lightning strokes is greater than preset quantity threshold value, hair
Send alarm signal.
Optionally, in the present embodiment, the alarm module 32 is communication module 33, under the control of processing module 31
It is communicated with host computer.
When number of lightning strokes is greater than preset quantity threshold value, processor controls communication module 33 and sends alarm signal to upper
Machine.
Alarm unit 3 in the present embodiment can also be sound alarm subsystem or light crossing-signal etc..
Optionally, the arrester detecting device in the present embodiment further includes locating module 34, the processing module 31
Also it is connect with the locating module 34.Locating module 34 is used to acquire the location information of arrester, and processor obtains locating module
The location information of 34 acquisitions is simultaneously sent to the host computer.
Wherein, location information can be the information for determining the specific location of arrester, for example, it may be GPS information,
It is also possible to the location information of the specific titles such as including area.
In the present embodiment, by be arranged locating module 34, can be convenient, quickly determine arrester position.
Optionally, in the present embodiment, the alarm unit 3 includes display module 35, the display module 35 and the place
It manages module 31 to connect, for showing the quantity of lightning strike signals.
In the present embodiment, the quantity of lightning strike signals is shown by setting display module 35, is had the characteristics that intuitive quick.
The arrester detecting device of the present embodiment can also include input unit, and the input unit is above-mentioned for obtaining
Preset quantity threshold value, predetermined current threshold, current threshold and output threshold value etc..
The another object of the application is to provide a kind of arrester checks system, the system comprises host computer and such as with
Upper described in any item arrester detecting devices, the arrester detecting device and the host computer communicate to connect.
Collected lightning strike signals, alarm signal etc. can be sent to host computer by arrester detecting device.In this way,
Easily realize the long-range monitoring to arrester.
In conclusion the arrester detecting device of the embodiment of the present application passes through the setting signal on the ground path of arrester
Acquisition unit 1, and signal acquisition unit 1 is connect with counting unit 2, then counting unit 2 is connect with alarm unit 3, root
It counts according to the lightning strike signals that signal acquisition unit 1 detects, by 2 statistical counting result of counting unit and sends out count results
Give alarm unit 3.In this way, the number that arrester is struck by lightning timely and effective can be detected.
In embodiment provided herein, it should be understood that disclosed device, it can also be by another way
It realizes.The apparatus embodiments described above are merely exemplary, for example, the flow chart and block diagram in the drawings show bases
The device of multiple embodiments of the application.In this regard, each box in block diagram can represent a unit.
In addition, each functional unit in each embodiment of the application can integrate one independent portion of formation together
Point, it is also possible to each unit individualism, an independent part can also be integrated to form with two or more units.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
The above, the only specific embodiment of the application, but the protection scope of the application is not limited thereto, it is any
Those familiar with the art within the technical scope of the present application, can easily think of the change or the replacement, and should all contain
Lid is within the scope of protection of this application.Therefore, the protection scope of the application shall be subject to the protection scope of the claim.
Claims (10)
1. a kind of arrester detecting device, which is characterized in that described device includes signal acquisition unit, counting unit and alarm
Unit；
The signal acquisition unit is arranged on the ground path of arrester, for acquiring lightning strike signals；
The counting unit is connect with the signal acquisition unit, for the collected lightning strike signals of the signal acquisition unit
It is counted；
The alarm unit is connect with the counting unit, and the quantity of the lightning strike signals for counting in the counting unit is greater than
Alarm signal is sent when preset quantity threshold value.
2. arrester detecting device according to claim 1, which is characterized in that the counting unit include trigger module and
Counting module, the trigger module are connect with the signal acquisition unit and the counting module respectively, for according to
Lightning strike signals generate trigger signal, and trigger the counting module and counted.
3. arrester detecting device according to claim 2, which is characterized in that the trigger module further includes sample circuit
And trigger signal generative circuit, the sample circuit are connect with the signal acquisition unit, for being obtained according to preset sample frequency
Take sampled signal；
The trigger signal generative circuit is connect with the sample circuit, when for calculating default acquisition according to the sampled signal
Between average current value in section generate described in trigger signal control and when the average current value is greater than predetermined current threshold
Counting module counts.
4. arrester detecting device according to claim 1, which is characterized in that the alarm unit include processing module and
Alarm module, the processing module are connect with the alarm module and the counting unit respectively, and the processing module is used for
When the quantity of the lightning strike signals of counting unit statistics is greater than preset quantity threshold value, controls the alarm module and send alarm
Signal.
5. arrester detecting device according to claim 4, which is characterized in that the alarm module is communication module, is used
In being communicated under the control of processing module with host computer.
6. arrester detecting device according to claim 5, which is characterized in that described device further includes locating module, institute
Processing module is stated also to connect with the locating module, it is described upper for the location information of arrester detecting device to be sent to
Machine.
7. according to the described in any item arrester detecting devices of claim 4-5, which is characterized in that the alarm unit includes aobvious
Show module, the display module is connect with the processing module, for showing the quantity of lightning strike signals.
8. arrester detecting device according to claim 1, which is characterized in that the signal acquisition unit includes detection mould
Block and adjustment module, the adjustment module is separately connected the detection module and the counting unit, for adjusting the inspection
It surveys the lightning strike signals of module acquisition and sends lightning strike signals adjusted to the counting unit.
9. arrester detecting device according to claim 1, which is characterized in that the signal acquisition unit includes that electric current is mutual
Sensor, the current transformer are connect with the counting unit.
10. a kind of arrester checks system, which is characterized in that the system comprises host computer and as claim 1-9 is any
Arrester detecting device described in, the arrester detecting device and the host computer communicate to connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821494928.XU CN208833872U (en) | 2018-09-12 | 2018-09-12 | Arrester detecting device and system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821494928.XU CN208833872U (en) | 2018-09-12 | 2018-09-12 | Arrester detecting device and system |
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| CN208833872U true CN208833872U (en) | 2019-05-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114295889A (en) * | 2021-12-02 | 2022-04-08 | 广东电网有限责任公司 | Arrester counting assembly that discharges |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114295889A (en) * | 2021-12-02 | 2022-04-08 | 广东电网有限责任公司 | Arrester counting assembly that discharges |
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