CN106291271B - Judge the live detection method of combined electrical apparatus high-voltage potential and ground potential electric discharge - Google Patents
Judge the live detection method of combined electrical apparatus high-voltage potential and ground potential electric discharge Download PDFInfo
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- CN106291271B CN106291271B CN201610583816.0A CN201610583816A CN106291271B CN 106291271 B CN106291271 B CN 106291271B CN 201610583816 A CN201610583816 A CN 201610583816A CN 106291271 B CN106291271 B CN 106291271B
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- electrical apparatus
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- combined electrical
- time difference
- ground potential
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- 238000001514 detection method Methods 0.000 title claims abstract description 15
- 239000012212 insulator Substances 0.000 claims abstract description 7
- VMQPMGHYRISRHO-UHFFFAOYSA-N benzvalene Chemical group C1=CC2C3C1C32 VMQPMGHYRISRHO-UHFFFAOYSA-N 0.000 claims description 3
- 238000009510 drug design Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000002604 ultrasonography 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
- G01R31/12—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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Relating To Insulation (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
Invention is related to the live detection method of a kind of judgement combined electrical apparatus high-voltage potential and ground potential electric discharge, its technical characterstic is the following steps are included: two extra-high video sensors are individually positioned in right above the combined electrical apparatus gas chamber two sides disc insulator to discharge, the signal time difference Δ t1 of two extra-high video sensors of acquisition；It keeps a superfrequency sensor position constant, before an other extra-high video sensor is placed on immediately below disc insulator, acquires the signal time difference Δ t2 of two extra-high video sensors；It is whether identical as Δ t2 according to Δ t1, judge that combined electrical apparatus high-voltage potential and ground potential discharge.The present invention has rational design, the electric discharge that can be occurred inside accurate judgement combined electrical apparatus is located at high-voltage potential or ground potential, facilitate the accurate positionin to equipment internal flaw, qualitative, can further improve the accuracy of live detection partial discharge location, and provide feasibility instruction for overhaul of the equipments.
Description
Technical field
Invention belongs to electrical safety technical field, what especially a kind of judgement combined electrical apparatus high-voltage potential and ground potential were discharged
Live detection method.
Background technique
It has reached its maturity currently, carrying out live detection technology to combined electrical apparatus, state's Intranet is charged using ultrasound, superfrequency
Detection means has found more combined electric appliance equipment defect.Judge that the electric discharge occurred inside combined electrical apparatus is located at high-voltage potential
Or ground potential judges that electric discharge source position will be helpful to the accurate fixed of equipment internal flaw there has been no specific method is proposed
Position, it is qualitative, provide feasibility instruction for overhaul of the equipments.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of designs rationally, positioning and qualitative is accurately sentenced
The live detection method of disconnected combined electrical apparatus high-voltage potential and ground potential electric discharge.
The present invention solves its technical problem and adopts the following technical solutions to achieve:
A kind of live detection method of judgement combined electrical apparatus high-voltage potential and ground potential electric discharge, comprising the following steps:
Two extra-high video sensors are individually positioned in the combined electrical apparatus gas chamber two sides benzvalene form insulation discharged by step 1
Right above sub, two superfrequency sensor signal output lines are accessed into high-speed oscilloscope, acquire the letter of two extra-high video sensors
Number time difference Δ t1；
Step 2 keeps a superfrequency sensor position constant, basin before an other extra-high video sensor is placed on
Immediately below formula insulator, two superfrequency sensor signal output lines are accessed into high-speed oscilloscope, acquire two superfrequency sensings
The signal time difference Δ t2 of device；
Two that if the signal time difference Δ t1 and step 2 of two extra-high video sensors of step 3, step 1 acquisition are acquired
The signal time difference Δ t2 of extra-high video sensor is identical, then illustrates that internal discharge source is located at combined electrical apparatus high-voltage potential；When such as signal
Poor Δ t1 is different from signal time difference Δ t2, then illustrates that internal discharge source is located at combined electrical apparatus ground potential.
The high-speed oscilloscope is four-way high-speed oscilloscope, analog bandwidth >=1GHz, sample rate >=4GHz.
The advantages and positive effects of the present invention are:
Two extra-high video sensors are placed on the different location of combined electrical apparatus gas chamber two sides disc insulator by the present invention, and
The signal time difference of two extra-high video sensors is acquired, so that the electric discharge occurred inside accurate judgement combined electrical apparatus is located at high-voltage electricity
Position or ground potential facilitate the accurate positionin to equipment internal flaw, qualitative, can further improve live detection partial discharge location
Accuracy, and provide feasibility instruction for overhaul of the equipments.
Detailed description of the invention
Fig. 1 is the two superfrequency sensor layout schematic diagrams of the present invention in step 1；
Fig. 2 is the two superfrequency sensor layout schematic diagrams of the present invention in step 2.
Specific embodiment
Inventive embodiments are further described below in conjunction with attached drawing:
A kind of live detection method of judgement combined electrical apparatus high-voltage potential and ground potential electric discharge, needs using live detection instrument
Device and two extra-high video sensors, the live detection instrument use four-way high-speed oscilloscope, analog bandwidth >=1GHz, sampling
Rate >=4GHz, specific method the following steps are included:
Two extra-high video sensors are individually positioned in the combined electrical apparatus gas chamber two sides benzvalene form insulation discharged by step 1
Right above sub, two superfrequency sensor signal output lines access high-speed oscilloscope, acquire the signal of two extra-high video sensors
The time difference, it is recorded as Δ t1, superfrequency sensor arrangement method is as shown in Figure 1.
Step 2 keeps a superfrequency sensor position constant, basin before an other extra-high video sensor is placed on
Immediately below formula insulator, two superfrequency sensor signal output lines are accessed into high-speed oscilloscope, acquire two superfrequency sensings
The signal time difference of device, it is recorded as Δ t2, superfrequency sensor arrangement method is as shown in Figure 2.
Two that if the signal time difference Δ t1 and step 2 of two extra-high video sensors of step 3, step 1 acquisition are acquired
The signal time difference Δ t2 of extra-high video sensor is identical, then illustrates that internal discharge source is located at combined electrical apparatus high-voltage potential, when such as signal
Poor Δ t1 is different from signal time difference Δ t2, then illustrates that internal discharge source is located at combined electrical apparatus ground potential.
Pass through above step, it can effectively judge that combined electrical apparatus high-voltage potential and ground potential discharge, facilitate to equipment
It is the accurate positionin of internal flaw, qualitative, feasibility instruction is provided for overhaul of the equipments.
Testing principle of the invention are as follows: since combined electrical apparatus gas chamber is cylindrical body, if electric discharge occurs in high-voltage potential
It is exactly near high-pressure conductor, then the position of two extra-high video sensors is moved anyway, as long as keeping being placed on two sides basin
At formula insulator, then the propagation distance of electromagnetic wave signal will not change, if power generation occurs in ground potential i.e. equipment shell
Internal surface utilizes the method then the propagation distance of electromagnetic wave signal will change after moving extra-high video sensor
Effectively judge that combined electrical apparatus high-voltage potential and ground potential discharge.
It is emphasized that invention the embodiment described be it is illustrative, without being restrictive, because the invention include simultaneously
It is not limited to embodiment described in specific embodiment, it is all to be obtained by those skilled in the art according to the technical solution of invention
Other embodiments also belong to the range of invention protection.
Claims (2)
1. a kind of live detection method of judgement combined electrical apparatus high-voltage potential and ground potential electric discharge, it is characterised in that including following step
It is rapid:
Two extra-high video sensors are being individually positioned in the combined electrical apparatus gas chamber two sides disc insulator to discharge just by step 1
Two superfrequency sensor signal output lines are accessed high-speed oscilloscope, when acquiring the signal of two extra-high video sensors by top
Poor Δ t1；
Step 2 keeps a superfrequency sensor position constant, and benzvalene form is exhausted before an other extra-high video sensor is placed on
Immediately below edge, two superfrequency sensor signal output lines are accessed into high-speed oscilloscope, acquire two extra-high video sensors
Signal time difference Δ t2；
If acquire two of signal time difference Δ t1 and the step 2 of two extra-high video sensors of step 3, step 1 acquisition are extra-high
The signal time difference Δ t2 of video sensor is identical, then illustrates that internal discharge source is located at combined electrical apparatus high-voltage potential；Such as signal time difference Δ
T1 is different from signal time difference Δ t2, then illustrates that internal discharge source is located at combined electrical apparatus ground potential.
2. the live detection method of judgement combined electrical apparatus high-voltage potential according to claim 1 and ground potential electric discharge, special
Sign is: the high-speed oscilloscope is four-way high-speed oscilloscope, analog bandwidth >=1GHz, sample rate >=4GHz.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610583816.0A CN106291271B (en) | 2016-07-19 | 2016-07-19 | Judge the live detection method of combined electrical apparatus high-voltage potential and ground potential electric discharge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610583816.0A CN106291271B (en) | 2016-07-19 | 2016-07-19 | Judge the live detection method of combined electrical apparatus high-voltage potential and ground potential electric discharge |
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| Publication Number | Publication Date |
|---|---|
| CN106291271A CN106291271A (en) | 2017-01-04 |
| CN106291271B true CN106291271B (en) | 2018-12-07 |
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| CN201610583816.0A Active CN106291271B (en) | 2016-07-19 | 2016-07-19 | Judge the live detection method of combined electrical apparatus high-voltage potential and ground potential electric discharge |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109917237A (en) * | 2017-12-12 | 2019-06-21 | 上海莫克电子技术有限公司 | Hand-hold GIS partial discharge location instrument and partial discharge location system |
| CN113740673B (en) * | 2021-07-15 | 2024-05-03 | 贵州电网有限责任公司 | Fault insulator online detection device and detection method based on magnetic array |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5107447A (en) * | 1988-05-16 | 1992-04-21 | Hitachi, Ltd. | Abnormality diagnosing system and method for a high voltage power apparatus |
| CN1834669A (en) * | 2006-04-19 | 2006-09-20 | 重庆大学 | On-line detecting and positioning device for local discharging of electrical insulated combined electrical appliance, and positioning method thereof |
| CN101655536A (en) * | 2008-08-19 | 2010-02-24 | 华东电力试验研究院有限公司 | Method for detecting partial discharge of gas insulated switchgear |
| CN202305736U (en) * | 2011-09-23 | 2012-07-04 | 山西省电力公司长治供电分公司 | Partial discharge detection device of gas insulation combination electric appliance |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5950396B2 (en) * | 2012-08-08 | 2016-07-13 | 一般財団法人電力中央研究所 | Method and system for evaluating partial discharge occurrence position |
-
2016
- 2016-07-19 CN CN201610583816.0A patent/CN106291271B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5107447A (en) * | 1988-05-16 | 1992-04-21 | Hitachi, Ltd. | Abnormality diagnosing system and method for a high voltage power apparatus |
| CN1834669A (en) * | 2006-04-19 | 2006-09-20 | 重庆大学 | On-line detecting and positioning device for local discharging of electrical insulated combined electrical appliance, and positioning method thereof |
| CN101655536A (en) * | 2008-08-19 | 2010-02-24 | 华东电力试验研究院有限公司 | Method for detecting partial discharge of gas insulated switchgear |
| CN202305736U (en) * | 2011-09-23 | 2012-07-04 | 山西省电力公司长治供电分公司 | Partial discharge detection device of gas insulation combination electric appliance |
Non-Patent Citations (1)
| Title |
|---|
| 基于特高频带电检测技术的GIS局部放电缺陷的识别与诊断;马志广等;《国网技术学院学报》;20160228;第19卷(第1期);第10-14页 * |
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| CN106291271A (en) | 2017-01-04 |
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