CN106409553A - Method and system of detecting complete opening and closing of GIS knife gate - Google Patents
Method and system of detecting complete opening and closing of GIS knife gate Download PDFInfo
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- CN106409553A CN106409553A CN201610876972.6A CN201610876972A CN106409553A CN 106409553 A CN106409553 A CN 106409553A CN 201610876972 A CN201610876972 A CN 201610876972A CN 106409553 A CN106409553 A CN 106409553A
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- audio signal
- disconnecting link
- audio
- closing
- link opening
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/16—Indicators for switching condition, e.g. "on" or "off"
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- Emergency Alarm Devices (AREA)
Abstract
The present invention discloses a method and a system of detecting complete opening and closing of a GIS knife gate. The method comprises the steps of pre-acquiring a first audio signal for normal opening and closing of a knife gate; acquiring a second audio signal for current opening and closing of the knife gate; determining whether a preset audio feature of the second audio signal is consistent with a corresponding audio feature of the first audio signal; and if yes, determining that the knife gate closes and opens completely. According to the method, a historical audio signal for normal opening and closing of the knife gate is acquired firstly, and the audio signal is used as a basis for determining complete opening and closing of the knife gate; each time the knife gate opens or closes, the audio signal for current opening and closing is acquired, the preset audio feature of the audio signal is compared with the corresponding audio feature of the historical audio signal, and if the preset audio feature is consistent with the corresponding audio feature, the knife gate closes and opens completely. Whether the knife gate is closed or opened completely is determined according to the audio feature of the opening and closing of the knife gate, whether the contact of the knife gate is in place can be determined accurately, so that the security of the electric equipment is improved, and the power grid system can provide electricity continuously.
Description
Technical field
The present invention relates to power grid security technical field, more particularly to a kind of GIS disconnecting link opening and closing in place detection method and be
System.
Background technology
With the development of power system, the application of electric GIS device is also more and more extensive.GIS device is to adopt SF6Gas
As dielectric, and the sealing switch equipment in metal cylinder by the High-Voltage Electrical Appliances component seal such as bus, switch, disconnecting link, tool
Have that floor space is little, small volume, lightweight, operational reliability is high, the low advantage of failure rate of machinery.
But in actual electric network is run, because GIS Electric knife switch division is not in place and accident that cause also happens occasionally.
Although GIS device disconnecting link opening and closing position has significantly scene instruction, even if the mark such as disconnecting link opening and closing lock mark display lamp
All show correct, due to the closing hidden attribute of contact, actual contact position is still difficult to accuracy of judgement.Therefore, GIS disconnecting link touches
The invisibility of point under cover great electric operation risk.And in actual switch operation, in order to judge disconnecting link whether division
Put in place, often also need to operations staff and again para-position judgement is carried out on disconnecting link transmission crank arm after operation disconnecting link, check disconnecting link position
Whether the two circular cavities of registration holes are overlapping, but due to switching circuit side grounding switch, line side disconnecting link and line-to-ground disconnecting link
Divide-shut brake mark and para-position hole site are typically higher, and therefore, operations staff is also inconvenient for the detection of disconnecting link opening and closing in place.
Thus, whether divide-shut brake puts in place, to ensure the safety of power equipment how to judge the disconnecting link of GIS device exactly
The seriality powered with network system, is the current technical issues that need to address of those skilled in the art.
Content of the invention
It is an object of the invention to provide a kind of GIS disconnecting link opening and closing in place detection method and system, GIS can be judged exactly
Whether divide-shut brake puts in place the disconnecting link of equipment, the seriality powered with the safety and network system ensureing power equipment.
For solving above-mentioned technical problem, the invention provides following technical scheme：
A kind of GIS disconnecting link opening and closing in place detection method, including：
Obtain the first audio signal of the normal divide-shut brake of disconnecting link in advance；
Obtain the second audio signal during current disconnecting link opening and closing lock；
Judge whether the preset audio feature of described second audio signal is special with the corresponding audio frequency of described first audio signal
Levy and match；
If so, then judge that described current disconnecting link opening and closing lock puts in place.
Preferably, described the second audio signal obtaining during current disconnecting link opening and closing lock, including：
Obtain original audio signal during described current disconnecting link opening and closing lock；
The invalid segment of described original audio signal is fallen in editing, obtains corresponding effective segment；
People's sound interference filtration is carried out to effective segment of described original audio signal and environment white noise filters；
Preset audio characteristic processing is carried out to the effective segment after filtering, obtains result audio signal.
Preferably, described preset audio characteristic processing carried out to the effective segment after filtering, obtain result audio frequency letter
Number, including：
Extract and the described crest quantity of effective segment after filtering of analysis, amplitude, frequency domain characteristic, effective time and
Division energy, obtains result audio signal.
Preferably, the described preset audio feature judging described second audio signal whether with described first audio signal
Corresponding audio frequency characteristics match, including：
Judge whether crest quantity, amplitude, frequency domain characteristic, effective time and the division energy of described second audio signal are located
In the threshold range of the corresponding audio frequency characteristics of described first audio signal.
Preferably, also include：
According to the preset audio feature of described second audio signal, judge that the mechanical performance index of described disconnecting link opening and closing lock is
No it is in default mechanical performance index threshold range；
If it is not, then judging described disconnecting link fault.
A kind of GIS disconnecting link opening and closing in place detecting system, including：
For obtaining the audio frequency acquisition module of audio signal during disconnecting link opening and closing lock；
For storing the memory module of the first audio signal during the normal divide-shut brake of disconnecting link；
For obtaining the second audio signal during the current disconnecting link opening and closing lock in described audio frequency acquisition module, and transfer institute
State the first audio signal during the normal divide-shut brake of disconnecting link in memory module, and by described second audio signal and described first sound
Frequency signal carries out preset audio aspect ratio pair, judges the central processor whether current disconnecting link opening and closing lock puts in place.
Preferably, described central processor includes：
Described second audio signal obtaining is carried out with the audio clips unit of effective segment shearing；
Described effective segment is carried out with the filtered audio unit that people's sound interference filtration and environment white noise filter；
Effective segment after filtering is carried out with feature extraction and the processing unit of analysis.
Compared with prior art, technique scheme has advantages below：
The GIS disconnecting link opening and closing in place detection method that the embodiment of the present invention is provided, including：Obtain the normal division of disconnecting link in advance
First audio signal of lock；Obtain the second audio signal during current disconnecting link opening and closing lock；Judge the default sound of the second audio signal
The corresponding audio frequency characteristics of frequency feature whether with the first audio signal match；If so, then judge that current disconnecting link opening and closing lock puts in place.First
First obtain history audio signal during the normal divide-shut brake of disconnecting link, the as first audio signal, with the default sound of the first audio signal
Frequency feature is as the foundation judging whether disconnecting link opening and closing lock puts in place；Every time during disconnecting link opening and closing lock, obtain sound during current divide-shut brake
Frequency signal, the as second audio signal, by the corresponding audio frequency of the preset audio feature of the second audio signal and the first audio signal
Feature is contrasted, if matching, then judges that now disconnecting link opening and closing lock puts in place, otherwise divide-shut brake is not in place, to remind work
Personnel re-start divide-shut brake or timely defect elimination is processed.Judge whether divide-shut brake puts in place by disconnecting link opening and closing lock audio frequency characteristics,
Can judge whether the position of actual contact puts in place exactly, it is to avoid the divide-shut brake fault causing not in place, improve electric power
The safety of equipment, has ensured the seriality that network system is powered.
Brief description
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
Have technology description in required use accompanying drawing be briefly described it should be apparent that, drawings in the following description are the present invention
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
These accompanying drawings obtain other accompanying drawings.
The GIS disconnecting link opening and closing in place detection method flow chart that Fig. 1 is provided by a kind of specific embodiment of the present invention；
The GIS disconnecting link opening and closing in place detecting system structural representation that Fig. 2 is provided by one embodiment of the present invention.
Specific embodiment
The core of the present invention is to provide a kind of GIS disconnecting link opening and closing in place detection method and system, can judge GIS exactly
Whether divide-shut brake puts in place the disconnecting link of equipment, the seriality powered with the safety and network system ensureing power equipment.
In order that the above objects, features and advantages of the present invention can become apparent from understandable, below in conjunction with the accompanying drawings to this
Bright specific embodiment is described in detail.
Elaborate detail in order to fully understand the present invention in the following description.But the present invention can with multiple not
It is same as alternate manner described here to implement, those skilled in the art can do class without prejudice in the case of intension of the present invention
Like popularization.Therefore the present invention is not limited by following public specific embodiment.
Refer to Fig. 1, the GIS disconnecting link opening and closing in place detection method that Fig. 1 is provided by a kind of specific embodiment of the present invention
Flow chart.
A kind of specific embodiment of the present invention provides a kind of GIS disconnecting link opening and closing in place detection method, including：
S11：Obtain the first audio signal of the normal divide-shut brake of disconnecting link in advance, that is, obtain history during the normal divide-shut brake of disconnecting link
Audio signal.So-called " divide-shut brake " refers to separating brake or combined floodgate, corresponding history sound when extracting disconnecting link separating brake respectively and closing a floodgate
Frequency signal.
S12：Obtain the second audio signal during current disconnecting link opening and closing lock.
S13：Judge the corresponding audio frequency characteristics phase of preset audio feature whether with the first audio signal of the second audio signal
It coincide.I.e. when current disconnecting link is separating brake, then the separating brake audio signal of the current disconnecting link obtaining and corresponding disconnecting link are normally divided
The corresponding audio frequency characteristics of history audio signal during lock are contrasted, and judge whether it matches；When current disconnecting link closes a floodgate, then
The corresponding audio frequency of the history audio signal when combined floodgate audio signal of the current disconnecting link obtaining and corresponding disconnecting link are normally closed a floodgate
Feature is contrasted, to judge to it is characterized in that no matching.
S14：If so, then judge that current disconnecting link opening and closing lock puts in place.
Obtain history audio signal during the normal divide-shut brake of disconnecting link, the as first audio signal first, believed with the first audio frequency
Number preset audio feature as the foundation judging whether disconnecting link opening and closing lock puts in place；Every time during disconnecting link opening and closing lock, obtain current point
Audio signal during combined floodgate, the as second audio signal, by the preset audio feature of the second audio signal and the first audio signal
Corresponding audio frequency characteristics contrasted, if matching, then judge that now disconnecting link opening and closing lock puts in place, otherwise divide-shut brake is not in place,
To remind staff to re-start divide-shut brake, judge whether divide-shut brake puts in place by disconnecting link opening and closing lock audio frequency characteristics, can
Judge whether the position of actual contact puts in place exactly, it is to avoid the divide-shut brake fault causing not in place, improve power equipment
Safety, ensured the seriality that network system is powered.
On the basis of above-mentioned embodiment, in one embodiment of the present invention, obtain the during current disconnecting link opening and closing lock
Two audio signals, including：
Obtain original audio signal during current disconnecting link opening and closing lock；
The invalid segment of original audio signal is fallen in editing, obtains corresponding effective segment；
People's sound interference filtration is carried out to effective segment of original audio signal and environment white noise filters；
Preset audio characteristic processing is carried out to the effective segment after filtering, obtains result audio signal.
Inventor's research finds that, due to the restriction of the environment residing for disconnecting link, the audio signal of acquisition is often subject to surrounding ring
The impact in border, so that judged result is affected.In the present embodiment, when obtaining the second audio signal, cut first
Volume fall the invalid segment of original audio signal, obtain effective segment, the original audio signal such as obtaining comprise disconnecting link opening and closing lock it
One section of front invalid segment, then by editing fall, remaining effectively segment, then this effective segment is carried out with various interference and filters,
Especially people's sound interference and environment white noise sound interference are filtered, to obtain more pure disconnecting link opening and closing lock audio signal,
Then preset audio characteristic processing is carried out to the effective segment after interference is filtered, with result audio signal, that is, final the
Two audio signals, thus avoiding the impact to judged result for the environmental factorss, and the editing of invalid segment makes judgement more accurate
Time that is true and saving contrast judgement.
It should be noted that can also using the method for the second audio signal during this acquisition current disconnecting link opening and closing lock in advance
Obtain the first audio signal during the normal divide-shut brake of disconnecting link, present embodiment does not limit to this, specifically depends on the circumstances.
Further, preset audio characteristic processing is carried out to the effective segment after filtering, obtains result audio signal,
Including：
The crest quantity of the extraction and analysis effective segment after filtering, amplitude, frequency domain characteristic, effective time and division
Energy, obtains result audio signal.
Then, judge the corresponding audio frequency characteristics kissing of preset audio feature whether with the first audio signal of the second audio signal
Close, including：Judge whether crest quantity, amplitude, frequency domain characteristic, effective time and the division energy of the second audio signal are in
In the threshold range of corresponding audio frequency characteristics of one audio signal.
Disconnecting link opening and closing lock starts to divide-shut brake to put in place the course of action being have certain operating time, then the second audio signal
Frequency domain characteristic, the feature such as effective time and division energy have different features according to whether divide-shut brake puts in place.As in disconnecting link
During combined floodgate, from close a floodgate start to in-place closing, its effective time in certain scope, when the effective time of the second audio signal
Do not put in place then it represents that closing a floodgate not in the effective time threshold range of the first audio signal, in the same manner, the frequency domain of the second audio signal
The features such as feature, division energy are corresponding and the first audio signal is compared.
It should be noted that the accuracy of the audio frequency characteristics comparing more at most judged result is higher, therefore, by the second audio frequency
The crest quantity of signal, amplitude, frequency domain characteristic, effective time and division energy and the corresponding crest number of the first audio signal
Amount, amplitude, frequency domain characteristic, effective time and division energy are compared, and when five meet criterion simultaneously, judge disconnecting link
Divide-shut brake puts in place, it is possible to increase the accuracy of judged result.
In one embodiment of the invention, this detection method also includes：
According to the preset audio feature of the second audio signal, judge whether the mechanical performance index of disconnecting link opening and closing lock is in pre-
If in mechanical performance index threshold range；
If it is not, then judging disconnecting link fault.
In the present embodiment, as the method according to above-mentioned embodiment obtains the sounds such as the division energy of the second audio signal
Frequency feature, and the audio frequency characteristics contrast with the first audio signal, the change of the mechanical energy that can effectively monitor disconnecting link opening and closing lock becomes
Gesture, when the mechanical performance index of disconnecting link opening and closing lock is less than the mechanical performance index that the audio frequency characteristics according to the first audio signal set
During threshold value then it represents that now disconnecting link opening and closing lock mechanical performance reduce, therefore, now judge disconnecting link fault, to remind user to enter
Row maintenance, further ensures the safe operation of power system.
Refer to Fig. 2, the GIS disconnecting link opening and closing in place detecting system structure that Fig. 2 is provided by one embodiment of the present invention
Schematic diagram.
Correspondingly, one embodiment of the present invention additionally provides a kind of GIS disconnecting link opening and closing in place detecting system, including：
For obtaining the audio frequency acquisition module 21 of audio signal during disconnecting link opening and closing lock；
For storing the memory module 22 of the first audio signal during the normal divide-shut brake of disconnecting link；
For obtaining the second audio signal during the current disconnecting link opening and closing lock in audio frequency acquisition module, and transfer storage mould
The first audio signal during the normal divide-shut brake of the disconnecting link in block, and the second audio signal and the first audio signal are carried out default sound
Frequency aspect ratio pair, judges the central processor 23 whether current disconnecting link opening and closing lock puts in place.
In the present embodiment, audio frequency acquisition module both can obtain the first audio signal during the normal divide-shut brake of disconnecting link,
The second audio signal during current disconnecting link opening and closing lock can be obtained again；Memory module is mainly used in storing the first above-mentioned audio frequency letter
Number；And central processor is used for comparing the preset audio feature of the second audio signal and the first audio signal, and according to judgement
Result judges whether current disconnecting link opening and closing lock puts in place, exports result of determination, wherein, the display of result of determination includes various ways,
As entered the display of line character or image by the LCDs being connected with central processor, or by speaker etc.
Carry out voice broadcast of judged result etc..
Further, central processor includes：The second audio signal obtaining is carried out with the audio frequency of effective segment shearing
Editing unit；Effective segment is carried out with the filtered audio unit that people's sound interference filtration and environment white noise filter；To through filtering
Effective segment afterwards carries out feature extraction and the processing unit of analysis.
In order to improve the accuracy of disconnecting link opening and closing lock result of determination, central processor includes audio clips unit, sound
Frequency filter element and processing unit, the second audio signal obtaining or/and the first audio signal are carried out editing, interference is filtered
And audio feature extraction, now all processed more pure of the first audio signal and the second audio signal is so that at place
Reason unit can obtain more accurate result of determination when being analyzed judging.Wherein, processing unit can be to the audio frequency obtaining
Signal carries out the extraction of audio frequency characteristics and the analyses such as crest quantity, amplitude, frequency domain characteristic, effective time and division energy.
It should be noted that for the accuracy improving result of determination further, the i.e. degree of accuracy of testing result, audio frequency obtains
When obtaining audio signal, audio frequency acquisition module and switch mechanism will keep identical distance, by environmental factorss to delivery block
The difference that change leads to is down to minimum.
In sum, GIS disconnecting link opening and closing in place detection method provided by the present invention and system, obtains disconnecting link normal first
History audio signal during divide-shut brake, the as first audio signal, using the preset audio feature of the first audio signal as judgement
The foundation whether disconnecting link opening and closing lock puts in place；Every time during disconnecting link opening and closing lock, obtain audio signal during current divide-shut brake, as second
Audio signal, the corresponding audio frequency characteristics of the preset audio feature of the second audio signal and the first audio signal are contrasted, if
It is to match, then judge that now disconnecting link opening and closing lock puts in place, otherwise divide-shut brake is not in place, to remind staff to re-start division
Lock.Judge whether divide-shut brake puts in place by disconnecting link opening and closing lock audio frequency characteristics, can judge that the position of actual contact is exactly
No put in place, it is to avoid the divide-shut brake fault causing not in place, improve the safety of power equipment, ensured that network system is powered
Seriality；Especially each audio signal is carried out with editing, filtering and preset audio feature extraction so that judged result is more smart
Really, it is to avoid erroneous judgement.
Above a kind of GIS disconnecting link opening and closing in place detection method provided by the present invention and system are described in detail.This
Apply specific case in literary composition the principle of the present invention and embodiment are set forth, the explanation of above example is only intended to
Help understands the present invention and its core concept.It should be pointed out that for those skilled in the art, without departing from
On the premise of the principle of the invention, the present invention can also be carried out with some improvement and modify, these improve and modification also falls into this
In bright scope of the claims.
Claims (7)
1. a kind of GIS disconnecting link opening and closing in place detection method is it is characterised in that include：
Obtain the first audio signal of the normal divide-shut brake of disconnecting link in advance；
Obtain the second audio signal during current disconnecting link opening and closing lock；
Judge the preset audio feature whether corresponding audio frequency characteristics phase with described first audio signal of described second audio signal
It coincide；
If so, then judge that described current disconnecting link opening and closing lock puts in place.
2. method according to claim 1 is it is characterised in that the second audio frequency letter during described acquisition current disconnecting link opening and closing lock
Number, including：
Obtain original audio signal during described current disconnecting link opening and closing lock；
The invalid segment of described original audio signal is fallen in editing, obtains corresponding effective segment；
People's sound interference filtration is carried out to effective segment of described original audio signal and environment white noise filters；
Preset audio characteristic processing is carried out to the effective segment after filtering, obtains result audio signal.
3. method according to claim 2 is it is characterised in that described carry out default sound to the effective segment after filtering
Frequency characteristic processing, obtains result audio signal, including：
Extract and analyze crest quantity, amplitude, frequency domain characteristic, effective time and the division of described effective segment after filtering
Energy, obtains result audio signal.
4. method according to claim 3 is it is characterised in that the preset audio of described second audio signal of described judgement is special
Levy and whether match with the corresponding audio frequency characteristics of described first audio signal, including：
Judge whether crest quantity, amplitude, frequency domain characteristic, effective time and the division energy of described second audio signal are in institute
State in the threshold range of corresponding audio frequency characteristics of the first audio signal.
5. method according to claim 4 is it is characterised in that also include：
According to the preset audio feature of described second audio signal, judge whether the mechanical performance index of described disconnecting link opening and closing lock is located
In default mechanical performance index threshold range；
If it is not, then judging described disconnecting link fault.
6. a kind of GIS disconnecting link opening and closing in place detecting system is it is characterised in that include：
For obtaining the audio frequency acquisition module of audio signal during disconnecting link opening and closing lock；
For storing the memory module of the first audio signal during the normal divide-shut brake of disconnecting link；
For obtaining the second audio signal during the current disconnecting link opening and closing lock in described audio frequency acquisition module, and deposit described in transferring
Store up the first audio signal during the normal divide-shut brake of disconnecting link in module, and described second audio signal and described first audio frequency are believed
Number carry out preset audio aspect ratio pair, judged the central processor whether current disconnecting link opening and closing lock puts in place.
7. system according to claim 6 is it is characterised in that described central processor includes：
Described second audio signal obtaining is carried out with the audio clips unit of effective segment shearing；
Described effective segment is carried out with the filtered audio unit that people's sound interference filtration and environment white noise filter；
Effective segment after filtering is carried out with feature extraction and the processing unit of analysis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610876972.6A CN106409553A (en) | 2016-09-30 | 2016-09-30 | Method and system of detecting complete opening and closing of GIS knife gate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610876972.6A CN106409553A (en) | 2016-09-30 | 2016-09-30 | Method and system of detecting complete opening and closing of GIS knife gate |
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Family
ID=59228889
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| CN201610876972.6A Pending CN106409553A (en) | 2016-09-30 | 2016-09-30 | Method and system of detecting complete opening and closing of GIS knife gate |
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| CN111965534A (en) * | 2020-08-19 | 2020-11-20 | 广东电网有限责任公司肇庆供电局 | GIS voiceprint signal acquisition device |
| CN113595250A (en) * | 2021-09-15 | 2021-11-02 | 广东电网有限责任公司 | Automatic analysis method and system for abnormal opening and closing positions of GIS (gas insulated switchgear) bus disconnecting link |
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