CN106932691A - A kind of insulator charged detection means and method based on voltage compensation - Google Patents
A kind of insulator charged detection means and method based on voltage compensation Download PDFInfo
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- CN106932691A CN106932691A CN201710111354.7A CN201710111354A CN106932691A CN 106932691 A CN106932691 A CN 106932691A CN 201710111354 A CN201710111354 A CN 201710111354A CN 106932691 A CN106932691 A CN 106932691A
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- voltage
- insulator
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- compensation
- detection means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1245—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of line insulators or spacers, e.g. ceramic overhead line cap insulators; of insulators in HV bushings
Abstract
The invention discloses a kind of insulator charged detection means and method based on voltage compensation, including the control source module, judge module, performing module and the voltage output module that are sequentially connected, wherein, control source module is additionally coupled to detector two ends contact, voltage output module is additionally coupled to detector electrode, and judge module is also connected with threshold value setting module；Insulator charged detection means based on voltage compensation of the invention, its offset is inversely proportional with induced voltage.In relatively low " stage casing " insulator of detection spread voltage, larger voltage compensation value is given, promote detector gap breakdown, by insulator erroneous judgement quantity reduction by 80%, useless upkeep operation is reduced, reduce operating personnel's labour intensity, power off time is reduced, electric network reliability is improved.
Description
Technical field
The present invention relates to isolator detecting technical field, more particularly to a kind of insulator charged inspection based on voltage compensation
Survey device and method.
Background technology
The insulator charged detection of power line tension is an important livewire work, and maintainer is during interruption maintenance
Repetition measurement selective examination is carried out using megameter, nearly 2 years repetition measurements 1105 find there are 57 (to miss and for normal insulation to be judged to zero for erroneous judgement
Value insulator), cause the later stage to overhaul replacement operation and do a large amount of idle works.
As shown in figure 1, at present, the present situation of isolator detecting class product is：Detector is installed on insulator action bars, is used
Action bars makes detector contact insulator two ends, judges whether to hear discharging sound or sees spark, if so, being then judged as just
Normal insulator, otherwise, is judged as zero resistance insulator, then records testing result, completes isolator detecting.
There is certain deficiency in isolator detecting treatment in it：Insulator can be divided into " side of wire " according to putting in order
" stage casing " " ground side " insulator, " stage casing " insulator spread voltage is relatively low, detector discharging gap in detection operation
In cannot adjust, even if normal insulation is likely to not reach the breakdown voltage in detector gap, now testing staff observation not
To electric discharge phenomena, erroneous judgement is caused.
There is the technology of related quantitative determination at present, insulator spread voltage numerical value and curve are exported to detection terminal, can
Detection accuracy is effectively lifted, the method is applied to sampling Detection.But it is annual for prefecture-level electric company's transmission of electricity workshop
Ten thousand insulators of 3-5 are detected, if all completing so huge data volume using quantitative determination is hardly possible.Therefore,
The operation of insulator zero value detection still uses qualitative detection in one line production work.
In sum, there are problems that erroneous judgement for isolator detecting in the prior art, still lack effective solution.
The content of the invention
In order to solve the deficiencies in the prior art, the invention provides a kind of insulator charged detection dress based on voltage compensation
Put, including control source module, judge module, performing module and the voltage output module being sequentially connected, wherein, control source mould
Block is additionally coupled to detector two ends contact, and voltage output module is additionally coupled to detector electrode, and judge module also sets with threshold value
Module is connected；
Control source module：For by the capacitor in insulator actual distribution control source to the module；
Judge module：For judging input voltage when higher than lower limit and less than higher limit by AND gate, Fang Keqi
Dynamic voltage compensation；
Compensation performing module：For according to input voltage, corresponding offset voltage being drawn by Operational amplifier element；
Voltage output module：For offset voltage to be applied into detector electrode；
Threshold value setting module：For minimum and highest according to relevant voltage grade monolithic insulator normal distribution voltage
Value, sets bound, it is ensured that only just start in normal voltage range in compensator, prevent from failing to judge.
Further, a kind of insulator charged detection means based on voltage compensation also includes sensing module：For the dress
Put the physical connection between remaining each module.
Further, present invention also offers a kind of insulator charged detection method based on voltage compensation, including：
The bound of the voltage of judge module startup work is set by threshold value setting module；
The input voltage of insulator actual distribution is received by control source module and is transmitted to judge module；
Whether the input voltage of insulator actual distribution is judged in the range of restriction by judge module, if it is not, then without
Compensation performing module need to be started, terminated, if so, then starting compensation performing module；
Compensation performing module draws insulator according to the computing curve between insulator input voltage and compensation output voltage
Offset voltage and offset voltage is exported to detector electrode by voltage output module.
Further, the bound of the voltage of the judge module startup work is according to insulator highest and minimum distribution
Voltage setting.
Further, the insulator highest and minimum spread voltage acquisition modes：The line voltage distribution according to where insulator
Sub-pieces number in grade and a string, by the spread voltage typical data table of insulator, calculates insulator highest and minimum
Spread voltage.
Further, the upper lower limit value of the voltage of the judge module startup work：Higher limit=insulator highest distribution
Voltage * 1.2；The minimum spread voltage * 0.6~0.8 of lower limit=insulator.
Compared with prior art, the beneficial effects of the invention are as follows：
Insulator charged detection means based on voltage compensation of the invention, its offset is inversely proportional with induced voltage.
During detection relatively low " stage casing " insulator of spread voltage, larger voltage compensation value is given, promote detector gap breakdown, will be exhausted
Edge erroneous judgement quantity reduction by 80%, reduces useless upkeep operation, reduces operating personnel's labour intensity, reduces power off time, improves
Electric network reliability.
Brief description of the drawings
The Figure of description for constituting the part of the application is used for providing further understanding of the present application, and the application's shows
Meaning property embodiment and its illustrated for explaining the application, does not constitute the improper restriction to the application.
Fig. 1 is existing insulator charged testing process schematic diagram；
Fig. 2 is the insulator charged structure of the detecting device figure based on voltage compensation of the application；
Fig. 3 voltage compensating device fundamental diagrams.
Specific embodiment
It is noted that described further below is all exemplary, it is intended to provide further instruction to the application.Unless another
Indicate, all technologies used herein and scientific terminology are with usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
Be also intended to include plural form, additionally, it should be understood that, when in this manual use term "comprising" and/or " bag
Include " when, it indicates existing characteristics, step, operation, device, component and/or combinations thereof.
As background technology is introduced, there is the deficiency that isolator detecting has erroneous judgement in the prior art, in order to solve
As above technical problem, present applicant proposes a kind of insulator charged detection means based on voltage compensation.
In a kind of typical implementation method of the application, as shown in Figure 2, there is provided a kind of insulator based on voltage compensation
Measuring device with electricity, including 6 modules, wherein 4 functions of modules modules：Control source module, judge module, performing module,
Voltage output module；2 supplementary modules：Threshold value setting module, sensing module.
Wherein, threshold value setting module, judge module, performing module are software module, by the corresponding journey of computing device
Sequence is completed, and control source module, voltage output module and sensing module are specific hardware module.And export existing product
Product, specific description is no longer done herein in regard to specific hardware circuit.
1. control source module：Connecting detection device two ends contact, by insulator actual distribution control source to the module
Capacitor, wherein, capacitor be used for filtering harmonics, burning voltage waveform, reduce spread of voltage to voltage compensating device
Impact, is in parallel relationship between capacitor and other parts substantially.
2. judge module：Judge that input voltage, higher than lower limit and during less than higher limit, can start electricity by AND gate
Pressure compensation.
3. performing module：According to input voltage, corresponding offset voltage is drawn by elements such as operational amplifiers.By interior
Algorithms calculate offset voltage, and the input voltage of insulator is substantially in inverse ratio function curve with offset voltage, and the curve leads to
Cross experiment method to obtain in advance, exported offset voltage by operational amplifier, insulator distribution input voltage is lower, more holds
Easily judge by accident, now give offset voltage higher, electrode is punctured, it is to avoid erroneous judgement.
4. voltage output module：Connecting detection device electrode, detector electrode is applied to by offset voltage.
5. threshold value setting module：According to the minimum and highest of relevant voltage grade monolithic insulator normal distribution voltage
Value, sets bound, it is ensured that only just start in normal voltage range in compensator, prevent from failing to judge.
6. sensing module：For the physical connection between each module, the specifically print circuit of chip internal.
In the typical implementation method of another kind of the application, there is provided a kind of insulator charged work based on voltage compensation
Method, comprises the following steps：
1. the sub-pieces number in line voltage distribution grade and a string, by consulting the spread voltage allusion quotation in related code
Type tables of data, calculates insulator highest and minimum spread voltage.
2. by the upper lower limit value of computer installation voltage compensator：Higher limit=highest spread voltage * 1.2；Lower limit
=minimum spread voltage * 0.6~0.8.
3. voltage compensator is installed on detector and starts detection.If the sub-pieces number and voltage class that detect afterwards
Do not change, then 1,2 steps need not be computed repeatedly and set.
The concrete operating principle figure of wherein voltage compensating device is as shown in Figure 3.
4. above analytic operation is carried out between voltage compensating device and detector, it is measured, calculate numerical value not to
Personnel export, and personnel still qualitatively judge the whether normal of insulator by spark and discharging sound.
Using of the invention in detection, when " stage casing " insulator reaches minimum normal distribution voltage, detector electrode one
Secondary discharge rate is not less than 90%, and discharge rate (detect discharge at least once twice, similarly hereinafter) is not less than 95%, three electric discharges twice
Rate is not less than 99%.Annual isolator detecting False Rate reduction by 80%, accuracy rate is promoted to more than 99%.It is estimated to reduce every year
Invalid operation 20 times, wherein changing monolithic insulator 15 times, changes bunch of insulator 5 times.When reducing power failure or disabling reclosing
Between 45 hours.
The preferred embodiment of the application is the foregoing is only, the application is not limited to, for the skill of this area
For art personnel, the application can have various modifications and variations.It is all within spirit herein and principle, made any repair
Change, equivalent, improvement etc., should be included within the protection domain of the application.
Claims (6)
1. a kind of insulator charged detection means based on voltage compensation, it is characterized in that, including the control source mould being sequentially connected
Block, judge module, performing module and voltage output module, wherein, control source module is additionally coupled to detector two ends contact, electricity
Pressure output module is additionally coupled to detector electrode, and judge module is also connected with threshold value setting module；
Control source module：For by the capacitor in insulator actual distribution control source to the module；
Judge module：For judging that input voltage when higher than lower limit and less than higher limit, can start electricity by AND gate
Pressure compensation；
Compensation performing module：For according to input voltage, corresponding offset voltage being drawn by Operational amplifier element；
Voltage output module：For offset voltage to be applied into detector electrode；
Threshold value setting module：For minimum and peak according to relevant voltage grade monolithic insulator normal distribution voltage,
Setting bound, it is ensured that only just start in normal voltage range in compensator, prevent from failing to judge.
2. a kind of insulator charged detection means based on voltage compensation as claimed in claim 1, it is characterized in that, also including passing
Sense module：For the physical connection between the device remaining each module.
3. using a kind of detection side of any described insulator charged detection means based on voltage compensation of claim 1-2
Method, it is characterized in that, including：
The bound of the voltage of judge module startup work is set by threshold value setting module；
The input voltage of insulator actual distribution is received by control source module and is transmitted to judge module；
Whether the input voltage of insulator actual distribution is judged in the range of restriction, if it is not, need not then open by judge module
Dynamic compensation performing module, terminates, if so, then starting compensation performing module；
Compensation performing module draws the benefit of insulator according to the computing curve between insulator input voltage and compensation output voltage
Repay voltage and offset voltage is exported to detector electrode by voltage output module.
4. a kind of detection method of the insulator charged detection means based on voltage compensation as claimed in claim 3, its feature
It is that the bound of the voltage of the judge module startup work is set according to insulator highest and minimum spread voltage.
5. a kind of detection method of the insulator charged detection means based on voltage compensation as claimed in claim 4, its feature
It is, the insulator highest and minimum spread voltage acquisition modes：In line voltage distribution grade and a string according to where insulator
Sub-pieces number, by the spread voltage typical data table of insulator, calculates insulator highest and minimum spread voltage.
6. a kind of detection method of the insulator charged detection means based on voltage compensation as claimed in claim 3, its feature
It is, the upper lower limit value of the voltage of the judge module startup work：Higher limit=insulator highest spread voltage * 1.2；Lower limit
The minimum spread voltage * 0.6~0.8 of=insulator.
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| CN201710111354.7A CN106932691B (en) | 2017-02-28 | 2017-02-28 | A kind of insulator charged detection device and method based on voltage compensation |
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| CN201710111354.7A CN106932691B (en) | 2017-02-28 | 2017-02-28 | A kind of insulator charged detection device and method based on voltage compensation |
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| CN106932691A true CN106932691A (en) | 2017-07-07 |
| CN106932691B CN106932691B (en) | 2019-07-26 |
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| US4757263A (en) * | 1987-05-01 | 1988-07-12 | Tennessee Valley Authority | Insulation power factor alarm monitor |
| JPH04364483A (en) * | 1991-06-11 | 1992-12-16 | Asahi Koyo Kk | Detecting method of faulty or stained insulator |
| CN2699311Y (en) * | 2004-04-30 | 2005-05-11 | 武汉大学 | Insulator dirtiness discharge monitoring device |
| CN102236056A (en) * | 2010-05-06 | 2011-11-09 | 苏州飞源信息技术有限公司 | System and method for detecting insulator |
| JP2013187048A (en) * | 2012-03-08 | 2013-09-19 | Ngk Insulators Ltd | High voltage application type faulty insulator detector |
| CN103439367A (en) * | 2013-09-04 | 2013-12-11 | 国家电网公司 | Composite insulator string live detection equipment |
| CN103576038A (en) * | 2013-11-27 | 2014-02-12 | 武汉科迪奥电力科技有限公司 | Wireless insulator detection device |
| CN105527549A (en) * | 2015-12-04 | 2016-04-27 | 重庆臻远电气有限公司 | Partial discharge data collection circuit and detection system |
| CN105974284A (en) * | 2016-06-27 | 2016-09-28 | 中国电力科学研究院 | External insulation configuration method for EHV (extra-high voltage) icing region |
| CN106199352A (en) * | 2016-06-28 | 2016-12-07 | 华北电力大学（保定） | The modification method of insulator contamination voltage under a kind of high conductivity mist |
-
2017
- 2017-02-28 CN CN201710111354.7A patent/CN106932691B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4757263A (en) * | 1987-05-01 | 1988-07-12 | Tennessee Valley Authority | Insulation power factor alarm monitor |
| JPH04364483A (en) * | 1991-06-11 | 1992-12-16 | Asahi Koyo Kk | Detecting method of faulty or stained insulator |
| CN2699311Y (en) * | 2004-04-30 | 2005-05-11 | 武汉大学 | Insulator dirtiness discharge monitoring device |
| CN102236056A (en) * | 2010-05-06 | 2011-11-09 | 苏州飞源信息技术有限公司 | System and method for detecting insulator |
| JP2013187048A (en) * | 2012-03-08 | 2013-09-19 | Ngk Insulators Ltd | High voltage application type faulty insulator detector |
| CN103439367A (en) * | 2013-09-04 | 2013-12-11 | 国家电网公司 | Composite insulator string live detection equipment |
| CN103576038A (en) * | 2013-11-27 | 2014-02-12 | 武汉科迪奥电力科技有限公司 | Wireless insulator detection device |
| CN105527549A (en) * | 2015-12-04 | 2016-04-27 | 重庆臻远电气有限公司 | Partial discharge data collection circuit and detection system |
| CN105974284A (en) * | 2016-06-27 | 2016-09-28 | 中国电力科学研究院 | External insulation configuration method for EHV (extra-high voltage) icing region |
| CN106199352A (en) * | 2016-06-28 | 2016-12-07 | 华北电力大学（保定） | The modification method of insulator contamination voltage under a kind of high conductivity mist |
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| CN106932691B (en) | 2019-07-26 |
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