CN106932691B - A kind of insulator charged detection device and method based on voltage compensation - Google Patents
A kind of insulator charged detection device and method based on voltage compensation Download PDFInfo
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- CN106932691B CN106932691B CN201710111354.7A CN201710111354A CN106932691B CN 106932691 B CN106932691 B CN 106932691B CN 201710111354 A CN201710111354 A CN 201710111354A CN 106932691 B CN106932691 B CN 106932691B
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- 239000012212 insulator Substances 0.000 title claims abstract description 73
- 238000001514 detection method Methods 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title abstract description 10
- 239000003990 capacitor Substances 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims description 4
- 230000015556 catabolic process Effects 0.000 abstract description 3
- 230000007812 deficiency Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
Classifications
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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 device and method based on voltage compensation, including voltage input module, judgment module, execution module and the voltage output module being sequentially connected, wherein, voltage input module is additionally coupled to detector both ends contact, voltage output module is additionally coupled to detector electrode, and judgment module is also connected with threshold setting module；Insulator charged detection device based on voltage compensation of the invention, offset are inversely proportional with induced voltage.In lower " middle section " insulator of detection spread voltage, biggish voltage compensation value is given, detector gap breakdown is promoted, insulator erroneous judgement quantity is reduced by 80%, useless upkeep operation is reduced, reduces operating personnel's labor intensity, power off time is reduced, electric network reliability is improved.
Description
Technical field
The present invention relates to isolator detecting technical fields, more particularly to a kind of insulator charged inspection based on voltage compensation
Survey device and method.
Background technique
The insulator charged detection of power line tension is an important livewire work, and service personnel is during interruption maintenance
Repetition measurement selective examination is carried out using megameter, nearly 2 years repetition measurements 1105 discoveries there are 57 (normal insulation to be accidentally judged to zero for erroneous judgement
It is worth insulator), cause later period maintenance replacement operation to do a large amount of idle works.
As shown in Figure 1, currently, the status of isolator detecting class product are as follows: install detector in insulator operating stick, use
Operating stick makes detector contact insulator both ends, judges whether to hear discharging sound or sees spark, if so, judgement is positive
Otherwise normal insulator is judged as zero resistance insulator, then record testing result, completes isolator detecting.
There are certain deficiencies in isolator detecting processing for it: insulator can be divided into " side of wire " according to putting in order
" middle section " " ground side " insulator, " middle section " insulator spread voltage is relatively low, and detector discharging gap is detecting operation
In can not adjust, even if the breakdown voltage in detector gap may also be not achieved in normal insulation, at this time testing staff observation not
To electric discharge phenomena, cause to judge by accident.
There is the technology of related quantitative detection at present, insulator spread voltage numerical value and curve are exported to detection terminal, it can
Detection accuracy is effectively promoted, this method is suitable for sampling Detection.But power supply company's transmission of electricity prefecture-level for one workshop is annual
Ten thousand insulators of 3-5 are detected, if all completing so huge data volume using quantitative detection is almost impossible.Therefore,
Insulator zero value detection operation still uses qualitative detection in one line production work.
In conclusion there is erroneous judgement, still shortage effective solution scheme for isolator detecting in the prior art.
Summary of the invention
In order to solve the deficiencies in the prior art, the present invention provides a kind of, and the insulator charged detection based on voltage compensation is filled
It sets, including voltage input module, judgment module, execution module and the voltage output module being sequentially connected, wherein voltage input mould
Block is additionally coupled to detector both ends contact, and voltage output module is additionally coupled to detector electrode, and judgment module is also set with threshold value
Module is connected；
Voltage input module: for the capacitor by insulator actual distribution voltage input into the module；
Judgment module: it is used for through AND gate judgement input voltage when being higher than lower limit value and being lower than upper limit value, Fang Keqi
Dynamic voltage compensation；
Compensate execution module: for obtaining corresponding offset voltage by Operational amplifier element according to input voltage；
Voltage output module: for offset voltage to be applied to detector electrode；
Threshold setting module: for the 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 device based on voltage compensation further includes sensing module: being used for the dress
Set the physical connection between remaining each module.
Further, the insulator charged detection method based on voltage compensation that the present invention also provides a kind of, comprising:
The bound that judgment module starts the voltage of work is set by threshold setting module；
The input voltage of insulator actual distribution is received by voltage input module and is transmitted to judgment module；
By judgment module judge the input voltage of insulator actual distribution whether in the range of restriction, if it is not, then without
Compensation execution module need to be started, terminated, if so, starting compensation execution module；
Compensation execution module obtains insulator according to the operation curve between insulator input voltage and compensation output voltage
Offset voltage and offset voltage is exported by voltage output module to detector electrode.
Further, the bound of the voltage of the judgment module starting work is according to the highest and lowest distribution of insulator
Voltage setting.
Further, the highest and lowest spread voltage acquisition modes of the insulator: according to line voltage distribution where insulator
It is highest and lowest to calculate insulator by the spread voltage typical data table of insulator for insulator the piece number in grade and a string
Spread voltage.
Further, the upper lower limit value of the voltage of the judgment module starting work: upper limit value=insulator highest distribution
Voltage * 1.2；The minimum spread voltage * 0.6~0.8 of lower limit value=insulator.
Compared with prior art, the beneficial effects of the present invention are:
Insulator charged detection device based on voltage compensation of the invention, offset are inversely proportional with induced voltage.?
When detecting lower " middle section " insulator of spread voltage, biggish voltage compensation value is given, detector gap breakdown is promoted, it will be exhausted
Edge, which judges quantity by accident, reduces by 80%, reduces useless upkeep operation, reduces operating personnel's labor intensity, reduces power off time, improves
Electric network reliability.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation are not constituted an undue limitation on the present application for explaining the application.
Fig. 1 is existing insulator charged testing process schematic diagram；
Fig. 2 is the insulator charged structure diagram of detection device based on voltage compensation of the application；
Fig. 3 voltage compensating device working principle diagram.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has 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 singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
As background technique is introduced, the deficiency that isolator detecting has erroneous judgement exists in the prior art, in order to solve
Technical problem as above, the insulator charged detection device based on voltage compensation that present applicant proposes a kind of.
In a kind of typical embodiment of the application, as shown in Fig. 2, providing a kind of insulator based on voltage compensation
Measuring device with electricity, including 6 modules, wherein 4 functions of modules modules: voltage input module, judgment module, execution module,
Voltage output module；2 supplementary modules: threshold setting module, sensing module.
Wherein, threshold setting module, judgment module, execution module are software module, execute corresponding journey by processor
Sequence is completed, and voltage input module, voltage output module and sensing module are specific hardware module.And the existing production of output
Product no longer do specific description herein in regard to specific hardware circuit.
1. voltage input module: connecting detection device both ends contact, by insulator actual distribution voltage input into 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. judgment module: when determining that input voltage is higher than lower limit value and is lower than upper limit value by AND gate, electricity can be started
Pressure compensation.
3. execution module: according to input voltage, obtaining corresponding offset voltage by elements such as operational amplifiers.By interior
Offset voltage is calculated in algorithms, and the input voltage and offset voltage of insulator are substantially in inverse ratio function curve, and the curve is logical
It crosses experiment method to obtain in advance, is exported offset voltage by operational amplifier, insulator distribution input voltage is lower, more holds
It easily judges by accident, gives higher offset voltage at this time, electrode is enable to puncture, avoid judging by accident.
4. voltage output module: offset voltage is applied to detector electrode by connecting detection device electrode.
5. threshold 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 interior.
In the typical embodiment of the another kind of the application, a kind of insulator charged work based on voltage compensation is provided
Method, comprising the following steps:
1. according to the insulator the piece number in line voltage distribution grade and a string, by consulting the spread voltage allusion quotation in related regulation
Type tables of data calculates the highest and lowest spread voltage of insulator.
2. passing through the upper lower limit value of computer installation voltage compensator: upper limit value=highest spread voltage * 1.2；Lower limit value
=minimum spread voltage * 0.6~0.8.
Start to detect on detector 3. voltage compensator is installed to.If the insulator the piece number and voltage class that detect later
It does not change, then 1,2 steps are without computing repeatedly and being arranged.
Wherein the concrete operating principle figure of voltage compensating device is as shown in Figure 3.
4. or more analytic operation carried out between voltage compensating device and detector, it is measured, calculate numerical value not to
Personnel's output, personnel still pass through spark and discharging sound qualitatively judge insulator it is normal whether.
Using it is of the invention when detecting, when " middle section " 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% twice, discharges three times
Rate is not less than 99%.Annual isolator detecting False Rate reduces by 80%, and accuracy rate is promoted to 99% or more.It is expected that can reduce every year
Invalid operation 20 times, wherein replacement monolithic insulator 15 times, it replaces bunch of insulator 5 times.When reducing power failure or deactivated reclosing
Between 45 hours.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this field
For art personnel, various changes and changes are possible in this application.Within the spirit and principles of this application, made any to repair
Change, equivalent replacement, improvement etc., should be included within the scope of protection of this application.
Claims (5)
1. a kind of insulator charged detection device based on voltage compensation, characterized in that including the voltage input mould being sequentially connected
Block, judgment module, compensation execution module and voltage output module, wherein voltage input module is additionally coupled to the touching of detector both ends
Head, voltage output module are additionally coupled to detector electrode, and judgment module is also connected with threshold setting module；
Voltage input module: for the capacitor by insulator actual distribution voltage input into the module；
Judgment module: for determining that input voltage when being higher than lower limit value and being lower than upper limit value, can start benefit by AND gate
Repay execution module；
Compensate execution module: for obtaining corresponding voltage compensation value by Operational amplifier element according to input voltage；
Voltage output module: for voltage compensation value to be applied to detector electrode；
Threshold setting module: for the minimum and peak according to relevant voltage grade monolithic insulator normal distribution voltage,
Set bound, it is ensured that only just start in normal voltage range in compensation execution module, prevent from failing to judge.
2. a kind of detection method of the insulator charged detection device based on voltage compensation described in claim 1 is used, it is special
Sign is, comprising:
The bound that judgment module starts the voltage of work is set by threshold setting module；
The input voltage of insulator actual distribution is received by voltage input module and is transmitted to judgment module；
The input voltage of insulator actual distribution is judged whether in the range of restriction by judgment module, if it is not, then without opening
Dynamic compensation execution module, terminates, if so, starting compensation execution module；
Compensation execution module obtains the electricity of insulator according to the operation curve between insulator input voltage and compensation output voltage
Pressure offset is simultaneously exported voltage compensation value to detector electrode by voltage output module.
3. a kind of detection method of the insulator charged detection device based on voltage compensation as claimed in claim 2, feature
It is that the bound of the voltage of the judgment module starting work is set according to the highest and lowest spread voltage of insulator.
4. a kind of detection method of the insulator charged detection device based on voltage compensation as claimed in claim 3, feature
It is the highest and lowest spread voltage acquisition modes of insulator: according in line voltage distribution grade where insulator and a string
Insulator the piece number calculates the highest and lowest spread voltage of insulator by the spread voltage typical data table of insulator.
5. a kind of detection method of the insulator charged detection device based on voltage compensation as claimed in claim 2, feature
It is the upper lower limit value of the voltage of the judgment module starting work: upper limit value=insulator highest spread voltage * 1.2；Lower limit value
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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| CN106932691B true CN106932691B (en) | 2019-07-26 |
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Citations (10)
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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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