CN104865510B - The method of inspection of air reactor inner conductor Abnormal Insulation and mass defect - Google Patents
The method of inspection of air reactor inner conductor Abnormal Insulation and mass defect Download PDFInfo
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- CN104865510B CN104865510B CN201510326824.2A CN201510326824A CN104865510B CN 104865510 B CN104865510 B CN 104865510B CN 201510326824 A CN201510326824 A CN 201510326824A CN 104865510 B CN104865510 B CN 104865510B
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Abstract
The invention discloses a kind of air reactor inner conductor Abnormal Insulation and the method for inspection of mass defect, this method to dry-type air-core reactor by carrying out measurement of partial discharge, magnitude of voltage and partial discharge value during the record initial partial discharge of generation, by comparing electromagnetic wire without exception around the magnitude of voltage and partial discharge value made when reactor produces partial discharge, show that dry-type air-core reactor inner conductor whether there is Abnormal Insulation and mass defect according to difference.After this method can be finished to air reactor production, Abnormal Insulation and mass defect to inner conductor carry out effective detection, it is ensured that the product quality of air reactor.
Description
Technical field
The insulation of air reactor inner conductor and the method for inspection of quality are examined the present invention relates to a kind of.
Background technology
Dry-type air-core reactor inner conductor is electromagnetic wire, and electromagnetic wire is mainly Abnormal Insulation and mass defect, electricity extremely
It is pressure-resistant by eddy current inspection and online in magnet-wire production process that quality testing is carried out extremely to both, but in the production of actual bare wire
During eddy current inspection can only detect tiny wedge angle or burr, the online pressure-resistant duration is 1-3s, and SI semi-insulation is abnormal
Defect may also can not be detected, and have the electromagnetic wire of Abnormal Insulation, conductor mass defect with after on reactor, can cause reactance
Device partial discharge quantity increases, and accelerates insulation damages process, influences the insulation life of reactor.Therefore air reactor is carried out local
Discharge measuring, can effective detection go out electromagnetic wire Abnormal Insulation, conductor mass defect, it is ensured that the service life of reactor, lifting electricity
The quality of anti-device.
The content of the invention
It is an object of the invention to provide the method for inspection of Abnormal Insulation and mass defect used in a kind of air reactor, its
The method taken is：
Conductor insulation exception used in the air reactor is comprised the following steps that with the mass defect method of inspection：
（1）Measurement of partial discharge is carried out to two film electromagnetic wires and four film electromagnetic wires, two electromagnetic wires being placed in parallel, two are taken
Root electromagnetic wire is tightly wound around together with insulating materials, under record sample starting partial discharge voltage and a certain voltage between partial discharge value
Difference, produces partial discharge when can draw two film 4kV according to test data, four films produce partial discharge in 8kV, i.e. four film electromagnetic wires are produced
The magnitude of voltage of partial discharge is twice of the magnitude of voltage that two film electromagnetic wires produce partial discharge；
（2）There is conductor mass defect electromagnetic wire to carry out measurement of partial discharge to the intact electromagnetic wire of four films and four films, take two
The electromagnetic wire being placed in parallel, one carries Abnormal Insulation or mass defect, both artificial to make mass defect and mark position, one
Normally, two electromagnetic wires are tightly wound around together with insulating materials, wherein defective be positioned against another electromagnetic wire, are both marked
Arc surface where remembering position is originated under partial discharge voltage and a certain voltage between partial discharge value towards normal electromagnetic wire, record sample
Difference, can show that intact electromagnetic wire produces partial discharge in 8kV according to test data, and partial discharge value is than there is mass defect electromagnetic wire
Partial discharge is worth small 100pC；
（3）Reactor model machine is made, inner conductor is the electromagnetic wire that insulation is normal, quality is intact, and reactor model machine is entered
Row partial discharge test, record produces the magnitude of voltage U and partial discharge value P during initial local electric discharge；
（4）Reactor model machine is made, inner conductor is electromagnetic wire to be detected, and shelf depreciation examination is carried out to reactor model machine
Test, record produces the magnitude of voltage U1 and partial discharge value P1 during initial local electric discharge, if U1 ＜ U, can determine whether electromagnetic wire to be detected
There is Abnormal Insulation, if U1=U, but P1 ＞ P, then it can determine whether that electromagnetic wire to be detected has mass defect.
The Partial Discharge Measuring Technology that this method is used, the shelf depreciation to reactor is measured, can be in reactor
Bag conductor insulation is abnormal, conductor mass defect is effectively differentiated, with the characteristics of detecting step is simple, testing result is accurate,
Ensure the service life of reactor well, lift the quality of reactor.
Embodiment
The detection method is comprised the following steps that：
（1）Measurement of partial discharge is carried out to two film electromagnetic wires and four film electromagnetic wires, two electromagnetic wires being placed in parallel, two are taken
Root electromagnetic wire be tightly wound around with insulating materials together, by partial discharge comprehensive analyzer record sample originate partial discharge voltage and
Difference under a certain voltage between partial discharge value.It can show that two films produce partial discharge in 4kV according to test data, four films are in 8kV
Partial discharge is produced, i.e. the magnitude of voltage that four film electromagnetic wires produce partial discharge is twice of the magnitude of voltage that two film electromagnetic wires produce partial discharge；
（2）There is conductor mass defect electromagnetic wire to carry out measurement of partial discharge to the intact electromagnetic wire of four films and four films, take two
The electromagnetic wire being placed in parallel, one carries Abnormal Insulation or mass defect, both artificial to make mass defect and mark position, one
Normally, two electromagnetic wires are tightly wound around together with insulating materials, wherein defective be positioned against another electromagnetic wire, are both marked
Arc surface where remembering position is originated under partial discharge voltage and a certain voltage between partial discharge value towards normal electromagnetic wire, record sample
Difference, can show that intact electromagnetic wire produces partial discharge in 8kV according to test data, and partial discharge value is than there is mass defect electromagnetic wire
Partial discharge is worth small 100pC；
（3）Reactor model machine is made, inner conductor is the electromagnetic wire that insulation is normal, quality is intact, and reactor model machine is entered
Row partial discharge test, record produces the magnitude of voltage U and partial discharge value P during initial local electric discharge；
（4）Reactor model machine is made, inner conductor is electromagnetic wire to be detected, and shelf depreciation examination is carried out to reactor model machine
Test, record produces the magnitude of voltage U1 and partial discharge value P1 during initial local electric discharge, if U1 ＜ U, can determine whether electromagnetic wire to be detected
There is Abnormal Insulation, if U1=U, but P1 ＞ P, then it can determine whether the mass defects such as burr occur for conductor, so as to identify to be detected
Whether electromagnetic wire has insulation defect or conductor mass defect.
Claims (1)
1. the method for inspection of a kind of air reactor inner conductor Abnormal Insulation and mass defect, it is characterised in that specific method is walked
It is rapid as follows：
（1）Measurement of partial discharge is carried out to two film electromagnetic wires and four film electromagnetic wires, two electromagnetic wires being placed in parallel, two electricity are taken
Magnet-wire is tightly wound around together with insulating materials, the difference under record sample starting partial discharge voltage and a certain voltage between partial discharge value
It is different, partial discharge is produced when can draw two film 4kV according to test data, four films produce partial discharge, i.e. four film electromagnetic wire generations office in 8kV
The magnitude of voltage put is twice of the magnitude of voltage that two film electromagnetic wires produce partial discharge；
（2）Have to the intact electromagnetic wire of four films and four films conductor mass defect electromagnetic wire carry out measurement of partial discharge, take two it is parallel
The electromagnetic wire of placement, one carries Abnormal Insulation or mass defect, and both artificial to make mass defect and mark position, one just
Often, two electromagnetic wires are tightly wound around together with insulating materials, wherein defective be positioned against another electromagnetic wire, are both marked
Arc surface where position originates the difference under partial discharge voltage and a certain voltage between partial discharge value towards normal electromagnetic wire, record sample
It is different, it can show that intact electromagnetic wire produces partial discharge in 8kV according to test data, and partial discharge value is than there is mass defect electromagnetic wire office
Put the small 100pC of value；
（3）Reactor model machine is made, inner conductor is the electromagnetic wire that insulation is normal, quality is intact, to reactor model machine progress office
Portion's discharge test, record produces the magnitude of voltage U and partial discharge value P during initial local electric discharge；
（4）Reactor model machine is made, inner conductor is electromagnetic wire to be detected, and partial discharge test is carried out to reactor model machine,
Record produces the magnitude of voltage U1 and partial discharge value P1 during initial local electric discharge, if U1 ＜ U, can determine whether that electromagnetic wire to be detected has absolutely
Edge is abnormal, if U1=U, but P1 ＞ P, then it can determine whether that electromagnetic wire to be detected has mass defect.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510326824.2A CN104865510B (en) | 2015-06-15 | 2015-06-15 | The method of inspection of air reactor inner conductor Abnormal Insulation and mass defect |
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| CN201510326824.2A CN104865510B (en) | 2015-06-15 | 2015-06-15 | The method of inspection of air reactor inner conductor Abnormal Insulation and mass defect |
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| CN104865510A CN104865510A (en) | 2015-08-26 |
| CN104865510B true CN104865510B (en) | 2017-10-17 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106019107B (en) * | 2016-07-28 | 2019-02-15 | 南方电网科学研究院有限责任公司 | A kind of detection method and system of air reactor shelf depreciation |
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| CN101949997A (en) * | 2010-09-09 | 2011-01-19 | 山东哈大电气有限公司 | Electromagnetic wire online withstand voltage detection device for dry-type air-core reactor |
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| JP2012007924A (en) * | 2010-06-23 | 2012-01-12 | Mitsubishi Electric Corp | Insulation diagnostic device of rotating electrical machine |
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| CN101949997A (en) * | 2010-09-09 | 2011-01-19 | 山东哈大电气有限公司 | Electromagnetic wire online withstand voltage detection device for dry-type air-core reactor |
| CN102520311A (en) * | 2012-01-10 | 2012-06-27 | 广东电网公司电力科学研究院 | Method for locating turn-to-turn insulation defects of dry type air-core reactor |
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| CN103744004A (en) * | 2013-12-31 | 2014-04-23 | 内蒙古大唐国际托克托发电有限责任公司 | Transformer/reactor partial discharge online monitoring method and monitoring system |
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