CN106771857A - Cross-inked polyethylene power cable insulation defect characteristic gas detecting system - Google Patents
Cross-inked polyethylene power cable insulation defect characteristic gas detecting system Download PDFInfo
- Publication number
- CN106771857A CN106771857A CN201611101550.8A CN201611101550A CN106771857A CN 106771857 A CN106771857 A CN 106771857A CN 201611101550 A CN201611101550 A CN 201611101550A CN 106771857 A CN106771857 A CN 106771857A
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- Prior art keywords
- characteristic gas
- resistance
- main frame
- electric capacity
- detection
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- 238000009413 insulation Methods 0.000 title claims abstract description 28
- 230000007547 defect Effects 0.000 title claims abstract description 19
- 239000004698 Polyethylene Substances 0.000 title claims abstract description 18
- -1 polyethylene Polymers 0.000 title claims abstract description 18
- 229920000573 polyethylene Polymers 0.000 title claims abstract description 18
- 238000012544 monitoring process Methods 0.000 claims abstract description 27
- 239000007789 gas Substances 0.000 claims description 95
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims description 18
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 17
- AQIXEPGDORPWBJ-UHFFFAOYSA-N pentan-3-ol Chemical compound CCC(O)CC AQIXEPGDORPWBJ-UHFFFAOYSA-N 0.000 claims description 14
- KWOLFJPFCHCOCG-UHFFFAOYSA-N Acetophenone Chemical compound CC(=O)C1=CC=CC=C1 KWOLFJPFCHCOCG-UHFFFAOYSA-N 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 10
- USFZMSVCRYTOJT-UHFFFAOYSA-N Ammonium acetate Chemical compound N.CC(O)=O USFZMSVCRYTOJT-UHFFFAOYSA-N 0.000 claims description 6
- 239000005695 Ammonium acetate Substances 0.000 claims description 6
- 229940043376 ammonium acetate Drugs 0.000 claims description 6
- 235000019257 ammonium acetate Nutrition 0.000 claims description 6
- IKHGUXGNUITLKF-XPULMUKRSA-N acetaldehyde Chemical compound [14CH]([14CH3])=O IKHGUXGNUITLKF-XPULMUKRSA-N 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims description 4
- 230000002950 deficient Effects 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- IKHGUXGNUITLKF-UHFFFAOYSA-N Acetaldehyde Chemical compound CC=O IKHGUXGNUITLKF-UHFFFAOYSA-N 0.000 claims 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 claims 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 25
- 238000005516 engineering process Methods 0.000 abstract description 6
- 238000007689 inspection Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- 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
- G01R31/08—Locating faults in cables, transmission lines, or networks
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0011—Sample conditioning
- G01N33/0021—Sample conditioning involving the use of a carrier gas for transport to the sensor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/007—Arrangements to check the analyser
- G01N33/0072—Arrangements to check the analyser by generating a test gas
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Medicinal Chemistry (AREA)
- Food Science & Technology (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Combustion & Propulsion (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Testing Relating To Insulation (AREA)
Abstract
The detection technique to cable major insulation has Partial Discharge Detecting Technology, infrared detection technology etc. at present.Although shelf depreciation live detection or on-line monitoring technique technology are more ripe, greatly, discriminatory analysis is complicated for live noise during Partial Discharge Detection, and technical difficulty is high.The present invention relates to Electric Power Equipment Insulation detection technique and its application field, specifically related to cross-inked polyethylene power cable insulation defect characteristic gas detecting system, the system includes characteristic gas sensor, snake-like hose, monitoring main frame, and characteristic gas sensor is connected by snake-like hose with monitoring main frame.Characteristic gas sensor is probeed into cable duct during Site Detection, monitoring main frame is by built-in high-sensitivity detection electric circuit inspection cable characteristic gas, when characteristic gas, and characteristic gas are detected more than predetermined concentration, monitoring main frame is alarmed by sound, light mode.The present invention has easy to detect, and detection efficiency advantage high.
Description
Technical field
The present invention relates to Electric Power Equipment Insulation detection technique and its application field, and in particular to cross-inked polyethylene power cable
Insulation defect characteristic gas detecting system.
Background technology
As China's Development of China's Urbanization is accelerated, the installation of cable and usage amount are increasing in urban power distribution network.It is how true
Protect the safe operation of a large amount of cables, improve outstanding problem of the power network power supply reliability as distribution network operation and management.High-tension electricity
An important process in cable operation maintenance is exactly the detection of major insulation, currently to the detection of cable major insulation, there is shelf depreciation
Detection technique, infrared detection technology.The live detection of power transmission cable shelf depreciation or on-line monitoring based on High Frequency Current Sensor,
Uhf sensor and ultrasonic sensor etc., technology is more ripe, but partial discharge monitoring scene noise is greatly,
Technical difficulty is high.
The content of the invention
In order to solve the above problems, it is the invention provides the detection of cross-inked polyethylene power cable insulation defect characteristic gas
System, probes into cable duct characteristic gas sensor during Site Detection, and characteristic gas sensor is led by snake-like hose with monitoring
Machine is connected, monitoring main frame by built-in detection electric circuit inspection cable characteristic gas, when detecting characteristic gas, and feature gas
When bulk concentration exceedes characteristic gas predetermined concentration, monitoring main frame is alarmed by sound, light mode.Concrete technical scheme is as follows：
Cross-inked polyethylene power cable insulation defect characteristic gas detecting system includes characteristic gas sensor, snake-like hose, prison
Survey main frame；Characteristic gas sensor is connected by snake-like hose with monitoring main frame；The characteristic gas sensor is used to detect electricity
The characteristic gas that cable insulation is produced when defective；The monitoring main frame includes that sealing ring interface, host housing, characteristic gas amplify
Circuit, analog input card, processor；The sealing ring interface is arranged on host housing；The characteristic gas amplifying circuit, collection
Board, processor are arranged in host housing；The snake-like hose is connected by sealing ring interface with characteristic gas amplifying circuit；
The characteristic gas amplifying circuit is connected by analog input card with processor；The host housing uses epoxy resin material.
Further, the snake-like hose is the plastic flexible pipe that length is scalable, diameter is variable.
Further, the characteristic gas amplifying circuit（33）Including electric capacity C61, electric capacity C62, electric capacity C63, resistance R61, electricity
Resistance R62, resistance R63, resistance R64, operational amplifier OP61；One end ground connection of the electric capacity C61, the other end and resistance R61 its
Middle one end connection；The other end of resistance R61 is connected with resistance R62 wherein one end and resistance R63 wherein one end；Resistance R62's
The other end is connected with the negative input end of electric capacity C63 wherein one end and operational amplifier OP61；The other end of resistance R63 and computing
The output end of amplifier OP61 is connected；The other end of electric capacity C63 and the positive input terminal of operational amplifier OP61 and resistance R64 its
Middle one end is connected；The other end of resistance R64 is connected with electric capacity C62 wherein one end；The other end ground connection of electric capacity C62.
Further, the monitoring main frame detects characteristic gas, and the feature gas for detecting by characteristic gas sensor
When bulk concentration exceedes characteristic gas predetermined concentration, monitoring main frame is alarmed by sound, light mode.
Further, the characteristic gas be Ammonium acetate, Acetophenone, Benzene,
At least one in Acetaldehyde, Acetone, 3-Pentanol.
Further, the relation of the characteristic gas concentration and discharge severity：Discharge capacity is produced in below 100pC
Tri- kinds of gases of Ammonium acetate, Acetophenone, Benzene, characteristic gas predetermined concentration range of choice be 1ppm ~
20ppm；Discharge capacity produces two kinds of gases of Acetone and 3-Pentanol, the choosing of characteristic gas predetermined concentration in 100pC ~ 1000pC
Scope is selected for 20ppm ~ 50ppm；More than after 1000pC, generation Acetaldehyde, characteristic gas predetermined concentration is selected discharge capacity
Scope is 50ppm ~ 150ppm.
Compared with prior art, the present invention have the advantages that it is safe, portable, accurate, because characteristic gas are electric according to being tested
Cable major insulation material it is different and different.The characteristic gas produced when the present invention is by detecting cable insulation defect judge that cable is
No to there is insulation fault, sensor can conveniently probe into cable duct during detection, thus testing staff need not enter cable duct.And feature
Only 3~5 seconds the time required to gas sensor detection, detection efficiency is high.
Brief description of the drawings
Fig. 1 is the structural representation of cross-inked polyethylene power cable insulation defect characteristic gas detecting system of the present invention：It is special
Levy gas sensor 1, snake-like hose 2, monitoring main frame 3；
Fig. 2 is that cross-inked polyethylene power cable insulation defect characteristic gas detecting system of the present invention monitors main machine structure schematic diagram：
Sealing ring interface 31, host housing 32, characteristic gas amplifying circuit 33, analog input card 34, processor 35；
Fig. 3 is cross-inked polyethylene power cable insulation defect characteristic gas detecting system amplification circuit structure schematic diagram of the present invention：
Electric capacity C61, electric capacity C62, electric capacity C63, resistance R61, resistance R62, resistance R63, resistance R64, operational amplifier OP61.
Specific embodiment
In order to be more clearly understood from technical scheme, the present invention is made below in conjunction with accompanying drawing and specific embodiment
Further illustrate：
Cross-inked polyethylene power cable insulation defect characteristic gas detecting system include characteristic gas sensor 1, snake-like hose 2,
Monitoring main frame 3；Characteristic gas sensor 1 is connected by snake-like hose 2 with monitoring main frame 3；The characteristic gas sensor 1 is used for
The characteristic gas that detection cable insulation is produced when defective；It is described monitoring main frame 3 include sealing ring interface 31, host housing 32,
Characteristic gas amplifying circuit 33, analog input card 34, processor 35；The sealing ring interface 31 is arranged on host housing 32；Institute
Characteristic gas amplifying circuit 33, analog input card 34, processor 35 is stated to be arranged in host housing 32；The snake-like hose 2 passes through
Sealing ring interface 31 is connected with characteristic gas amplifying circuit 33；The characteristic gas amplifying circuit 33 is by analog input card 34 and place
Reason device 35 is connected；The host housing 32 uses epoxy resin material.
Further, the snake-like hose 2 is the plastic flexible pipe that length is scalable, diameter is variable.
Further, the characteristic gas amplifying circuit 33 includes electric capacity C61, electric capacity C62, electric capacity C63, resistance R61, resistance
R62, resistance R63, resistance R64, operational amplifier OP61；One end ground connection of the electric capacity C61, the other end is with resistance R61 wherein
One end connects；The other end of resistance R61 is connected with resistance R62 wherein one end and resistance R63 wherein one end；Resistance R62's is another
One end is connected with the negative input end of electric capacity C63 wherein one end and operational amplifier OP61；The other end of resistance R63 is put with computing
The output end of big device OP61 is connected；The other end of electric capacity C63 is with the positive input terminal of operational amplifier OP61 and resistance R64 wherein
One end is connected；The other end of resistance R64 is connected with electric capacity C62 wherein one end；The other end ground connection of electric capacity C62.
Further, the monitoring main frame 3 detects characteristic gas, and the feature for detecting by characteristic gas sensor 1
When gas concentration exceedes characteristic gas predetermined concentration, monitoring main frame 3 is alarmed by sound, light mode.
Further, the characteristic gas be Ammonium acetate, Acetophenone, Benzene,
At least one in Acetaldehyde, Acetone, 3-Pentanol.
Further, the relation of the characteristic gas concentration and discharge severity：Discharge capacity is produced in below 100pC
Tri- kinds of gases of Ammonium acetate, Acetophenone, Benzene, characteristic gas predetermined concentration range of choice be 1ppm ~
20ppm；Discharge capacity produces two kinds of gases of Acetone and 3-Pentanol, the choosing of characteristic gas predetermined concentration in 100pC ~ 1000pC
Scope is selected for 20ppm ~ 50ppm；More than after 1000pC, generation Acetaldehyde, characteristic gas predetermined concentration is selected discharge capacity
Scope is 50ppm ~ 150ppm.
Twisted polyethylene cable will produce 3-Pentanol, Acetone, Ammonium acetate etc. at insulation defect
Gas, therefore these gases are using as the characteristic gas of twisted polyethylene cable.Characteristic gas sensor 1 is accomplished by energy when selecting
Whether enough detection features described above gas whether there is, and the basis for estimation insulated as cable.During Site Detection, by characteristic gas
Sensor 1 is probeed into cable duct, and characteristic gas sensor 1 is connected by snake-like hose 2 with monitoring main frame 3, and monitoring main frame 3 passes through
The characteristic gas of built-in high-sensitivity detection electric circuit inspection cable, when detecting characteristic gas, and characteristic gas exceed it is pre-
When determining concentration, monitoring main frame 3 is alarmed by sound, light mode.By said process, the mesh of detection cable insulation defect is reached
's.
The present invention is not limited to above-described specific embodiment, the foregoing is only preferable case study on implementation of the invention
, it is not intended to limit the invention, all any modification, equivalent and improvement made within the spirit and principle of invention
Deng should be included within the scope of the present invention.
Claims (6)
1. cross-inked polyethylene power cable insulation defect characteristic gas detecting system, it is characterised in that：Including characteristic gas sensing
Device（1）, snake-like hose（2）, monitoring main frame（3）；Characteristic gas sensor（1）By snake-like hose（2）With monitoring main frame（3）Phase
Even；The characteristic gas sensor（1）For the characteristic gas produced when detecting that cable insulation is defective；The monitoring main frame
（3）Including sealing ring interface（31）, host housing（32）, characteristic gas amplifying circuit（33）, analog input card（34）, processor
（35）；The sealing ring interface（31）Installed in host housing（32）On；The characteristic gas amplifying circuit（33）, analog input card
（34）, processor（35）It is arranged on host housing（32）It is interior；The snake-like hose（2）By sealing ring interface（31）With feature gas
Body amplifying circuit（33）Connection；The characteristic gas amplifying circuit（33）By analog input card（34）With processor（35）Connection；
The host housing（32）Using epoxy resin material.
2. cross-inked polyethylene power cable insulation defect characteristic gas detecting system according to claim 1, its feature exists
In：The snake-like hose（2）It is length is scalable, diameter is variable plastic flexible pipe.
3. cross-inked polyethylene power cable insulation defect characteristic gas detecting system according to claim 1, its feature exists
In：The characteristic gas amplifying circuit（33）Including electric capacity C61, electric capacity C62, electric capacity C63, resistance R61, resistance R62, resistance
R63, resistance R64, operational amplifier OP61；One end ground connection of the electric capacity C61, the other end is connected with resistance R61 wherein one end；
The other end of resistance R61 is connected with resistance R62 wherein one end and resistance R63 wherein one end；The other end and electric capacity of resistance R62
The negative input end of C63 wherein one end and operational amplifier OP61 is connected；The other end of resistance R63 is with operational amplifier OP61's
Output end is connected；The other end of electric capacity C63 is connected with the positive input terminal of operational amplifier OP61 and resistance R64 wherein one end；
The other end of resistance R64 is connected with electric capacity C62 wherein one end；The other end ground connection of electric capacity C62.
4. cross-inked polyethylene power cable insulation defect characteristic gas detecting system according to claim 1, its feature exists
In：The monitoring main frame（3）By characteristic gas sensor（1）Detect characteristic gas, and the characteristic gas concentration for detecting
During more than characteristic gas predetermined concentration, main frame is monitored（3）Alarmed by sound, light mode.
5. cross-inked polyethylene power cable insulation defect characteristic gas detecting system according to claim 4, its feature exists
In：The characteristic gas be Ammonium acetate, Acetophenone, Benzene, Acetaldehyde, Acetone,
At least one in 3-Pentanol.
6. cross-inked polyethylene power cable insulation defect characteristic gas detecting system according to claim 4, its feature exists
In：The relation of the characteristic gas concentration and discharge severity：Discharge capacity produces Ammonium in below 100pC
Tri- kinds of gases of acetate, Acetophenone, Benzene, characteristic gas predetermined concentration range of choice is 1ppm ~ 20ppm；Put
Electricity produces two kinds of gases of Acetone and 3-Pentanol in 100pC ~ 1000pC, and characteristic gas predetermined concentration range of choice is
20ppm~50ppm；Discharge capacity produces Acetaldehyde more than after 1000pC, and characteristic gas predetermined concentration range of choice is
50ppm~150ppm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611101550.8A CN106771857B (en) | 2016-12-05 | 2016-12-05 | Insulation defect characteristic gas detection system for crosslinked polyethylene power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611101550.8A CN106771857B (en) | 2016-12-05 | 2016-12-05 | Insulation defect characteristic gas detection system for crosslinked polyethylene power cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106771857A true CN106771857A (en) | 2017-05-31 |
| CN106771857B CN106771857B (en) | 2023-05-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611101550.8A Active CN106771857B (en) | 2016-12-05 | 2016-12-05 | Insulation defect characteristic gas detection system for crosslinked polyethylene power cable |
Country Status (1)
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108535421A (en) * | 2018-05-17 | 2018-09-14 | 长园共创电力安全技术股份有限公司 | Cable insulation defect macromolecular escaping gas detecting system |
| CN108918768A (en) * | 2018-05-17 | 2018-11-30 | 珠海华网科技有限责任公司 | Cable macromolecular gas detecting system |
| CN110398671A (en) * | 2019-07-05 | 2019-11-01 | 深圳供电局有限公司 | Partial Discharge Detection equipment |
| CN110470339A (en) * | 2019-08-05 | 2019-11-19 | 国网湖南省电力有限公司 | A kind of portable cable integrated detecting device and its application method |
| CN112213605A (en) * | 2020-11-19 | 2021-01-12 | 云南电网有限责任公司临沧供电局 | Cable partial discharge tracking early warning method and system based on nitrogen dioxide monitoring |
| CN112345598A (en) * | 2020-10-23 | 2021-02-09 | 中国电力科学研究院有限公司 | Micro-nano sensing equipment for detecting fault gas of power transmission and transformation equipment |
| CN113899863A (en) * | 2021-11-12 | 2022-01-07 | 国网湖南省电力有限公司 | High-voltage cable hidden defect detection method and system based on gas characteristics |
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