CN104062420B - The appraisal procedure of electric power transformer insulated paper ageing state in a kind of operation - Google Patents
The appraisal procedure of electric power transformer insulated paper ageing state in a kind of operation Download PDFInfo
- Publication number
- CN104062420B CN104062420B CN201410314162.2A CN201410314162A CN104062420B CN 104062420 B CN104062420 B CN 104062420B CN 201410314162 A CN201410314162 A CN 201410314162A CN 104062420 B CN104062420 B CN 104062420B
- Authority
- CN
- China
- Prior art keywords
- transformer
- oil
- furfural
- paper
- furfural content
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000032683 aging Effects 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 35
- HYBBIBNJHNGZAN-UHFFFAOYSA-N furfural Chemical compound O=CC1=CC=CO1 HYBBIBNJHNGZAN-UHFFFAOYSA-N 0.000 claims abstract description 138
- 238000009413 insulation Methods 0.000 claims abstract description 29
- 239000007787 solid Substances 0.000 claims abstract description 25
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 13
- 238000001914 filtration Methods 0.000 claims abstract description 10
- 230000008569 process Effects 0.000 claims abstract description 9
- 230000008439 repair process Effects 0.000 claims abstract description 7
- 206010027336 Menstruation delayed Diseases 0.000 claims description 6
- 238000011156 evaluation Methods 0.000 claims description 6
- 238000012423 maintenance Methods 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 3
- 235000013350 formula milk Nutrition 0.000 claims description 3
- 230000009466 transformation Effects 0.000 claims description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000003862 health status Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Landscapes
- Housings And Mounting Of Transformers (AREA)
Abstract
The invention discloses the appraisal procedure of electric power transformer insulated paper ageing state in a kind of operation, the furfural total amount that time degree of polymerization of insulating paper drops to ultimate value in setting operating transformer, solid insulation produces; Furfural total amount comprises three parts, one is furfural content, two after solid insulation ageing in transformer oil to be furfural contents, three in insulating paper be in Repair of Transformer process transformer oil is the furfural content that removes of mode after filtration, assesses electric power transformer insulated paper ageing state in operation by the furfural content in transformer oil after calculating solid insulation ageing.In operation of the present invention, the appraisal procedure of electric power transformer insulated paper ageing state can carry out the assessment of transformer solid insulation ageing state under the state of non-power failure, have simply, directly, the feature such as easily and effectively.
Description
Technical field
The present invention relates to the appraisal procedure of electric power transformer insulated paper ageing state in a kind of operation, belong to POWER SYSTEM STATE assessment technique field.
Background technology
The most direct method of current solid insulation health state evaluation is the measurement adopting the insulating paper got in transformer to carry out the degree of polymerization.But the operability of the method is very poor, obtains sample and must have a power failure, drain the oil, have wound to solid insulation system, sampling terminates rear sampling place and must carry out repairing and strengthening.Use the appraisal procedure of electric power transformer insulated paper ageing state in operation of the present invention can carry out the assessment of solid insulation ageing state and residual life under non-power down mode, effective technical support is provided to the life-cycle management of grid equipment.
Summary of the invention
Object: in order to overcome the deficiencies in the prior art, the invention provides the appraisal procedure of electric power transformer insulated paper ageing state in a kind of operation, the furfural content after relating to the gross mass of insulating paper in the furfural content of transformer oil in power transformer in operation, transformer, solid insulation ageing in transformer oil and the furfural content in insulating paper, run in the parameter such as absorbed the after filtering furfural content of transformer oil.
Technical scheme: for solving the problems of the technologies described above, the technical solution used in the present invention is:
In running, an appraisal procedure for electric power transformer insulated paper ageing state, is characterized in that: under non-power down mode, carry out analysis and evaluation to transformer solid insulation ageing state.
The appraisal procedure of electric power transformer insulated paper ageing state in described operation, it is characterized in that: extrapolate when in operating transformer, the degree of polymerization of insulating paper drops to ultimate value time, the furfural total amount that solid insulation produces, namely, time the furfural total amount that solid insulation produces reaches certain value, can judge that in power transformer, insulating paper is completely aging.
The appraisal procedure of electric power transformer insulated paper ageing state in described operation, it is characterized in that: transformer insulating paper ageing state is judged by the degree of polymerization measuring insulating paper, this appraisal procedure is converted to directly by calculating transformer oil furfural content, assesses electric power transformer insulated paper ageing state.
Because the insulating paper sampling link of transformer in operation is complicated, and easily affect transformer insulating system, take sample and also must repair, not easy to operate; The method can directly carry out the measurement of transformer oil furfural content, convenient and simple.
The appraisal procedure of electric power transformer insulated paper ageing state in described operation, is characterized in that: the furfural total amount Q that time degree of polymerization of insulating paper drops to ultimate value in setting operating transformer, solid insulation produces
always; Furfural total amount Q
alwayscomprise three parts, one is the furfural content Q after solid insulation ageing in transformer oil
oil, two are furfural content Q in insulating paper
paper, three are transformer oil furfural content Q of removing of mode after filtration in Repair of Transformer process
filter, i.e. Q
always=Q
oil+ Q
paper+ Q
filter.
The appraisal procedure of electric power transformer insulated paper ageing state in described operation, is characterized in that, comprise the following steps:
1) be ultimate value time in setting operation, the degree of polymerization of electric power transformer insulated paper drops to 250, namely when furfural content in transformer oil is greater than 4 mg/L, insulating paper is completely aging, and namely transformer whole dielectric level is in late period in life-span, is designated as Q
always=4 mg/L;
2) calculate with the insulating paper of 1kg unit, a certain amount of new insulating paper is immersed in the transformer oil of known furfural content, setting the different time carries out transformer oil furfural content mensuration, when the furfural content recorded is without significant change, calculate the absorptance of insulating paper to furfural in oil, thus calculate the adsorbable furfural content of 1kg insulating paper, be designated as the furfural content Q in insulating paper
paper;
3) existing old transformer is utilized, add the furfural of aimed concn, analogue transformer is various relates to the maintenance process of draining the oil, dissimilar oil filtering unit is adopted to carry out oil strain to this transformer respectively, then furfural content mensuration is carried out, deduct the furfural content after oil strain with aimed concn, be the furfural content Q that removes of mode after filtration of transformer oil in Repair of Transformer process
filter;
4) basis: Q
always=Q
oil+ Q
paper+ Q
filter,transformation for mula obtains: Q
oil=Q
always-Q
paper-Q
filter; Due to Q
alwaysfor fixed value, Q
paper, Q
filtermeasure and drawn, then the furfural content Q after solid insulation ageing in transformer oil
oilcan determine;
5) by Q that above step calculates
oilbe the furfural content in transformer oil after solid insulation ageing.
6) therefore, in transformer state evaluation procedure, as long as the furfural content recorded in transformer oil reaches Q
oilabove, be then judged to be that the integral insulation level of this transformer is in late period in life-span, corresponding maintenance measure should be taked.
Beneficial effect: the appraisal procedure of electric power transformer insulated paper ageing state in operation provided by the invention, instead of the insulating paper got in transformer and carry out the measurement of the degree of polymerization to evaluate the method for firmware insulation health status, the assessment of solid insulation ageing state and residual life can be carried out under non-power down mode, effectively simple, convenient.The appraisal procedure of electric power transformer insulated paper ageing state of the present invention solves gets the difficult point that poor, the operation very complicated of degree of polymerization operation surveyed by insulating paper, have and evaluate the features such as firmware insulated aging life-span more accurately, for electric power netting safe running provides strong technical support.
Embodiment
Below in conjunction with specific embodiment, the present invention is further described.
An appraisal procedure for electric power transformer insulated paper ageing state in running, comprises the following steps:
1) be ultimate value time in setting operation, the degree of polymerization of electric power transformer insulated paper drops to 250, namely when furfural content in transformer oil is greater than 4 mg/L, insulating paper is completely aging, and namely transformer whole dielectric level is in late period in life-span, is designated as Q
always=4 mg/L;
2) calculate with the insulating paper of 1kg unit, a certain amount of new insulating paper is immersed in the transformer oil of known furfural content, setting the different time carries out transformer oil furfural content mensuration, when the furfural content recorded is without significant change, calculate the absorptance of insulating paper to furfural in oil, thus calculate the adsorbable furfural content of 1kg insulating paper, be designated as the furfural content Q in insulating paper
paper;
3) existing old transformer is utilized, add the furfural of aimed concn, analogue transformer is various relates to the maintenance process of draining the oil, dissimilar oil filtering unit is adopted to carry out oil strain to this transformer respectively, then furfural content mensuration is carried out, deduct the furfural content after oil strain with aimed concn, be the furfural content Q that removes of mode after filtration of transformer oil in Repair of Transformer process
filter;
4) basis: Q
always=Q
oil+ Q
paper+ Q
filter,transformation for mula obtains: Q
oil=Q
always-Q
paper-Q
filter; Due to Q
alwaysfor fixed value, Q
paper, Q
filtermeasure and drawn, then the furfural content Q after solid insulation ageing in transformer oil
oilcan determine;
5) by Q that above step calculates
oilbe the furfural content in transformer oil after solid insulation ageing.
6) therefore, in transformer state evaluation procedure, as long as the furfural content recorded in transformer oil reaches Q
oilabove, be then judged to be that the integral insulation level of this transformer is in late period in life-span, corresponding maintenance measure should be taked.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (1)
1. in running, an appraisal procedure for electric power transformer insulated paper ageing state, is characterized in that: under non-power down mode, carry out analysis and evaluation to transformer solid insulation ageing state; Extrapolate when the degree of polymerization of insulating paper drops to ultimate value in operating transformer time, the furfural total amount that solid insulation produces, time the furfural total amount that namely solid insulation produces reaches certain value, can judge that in power transformer, insulating paper is completely aging; Transformer insulating paper ageing state is judged by the degree of polymerization measuring insulating paper, and this appraisal procedure is converted to directly by calculating transformer oil furfural content, assesses electric power transformer insulated paper ageing state; The furfural total amount Q that time degree of polymerization of insulating paper drops to ultimate value in setting operating transformer, solid insulation produces
always; Furfural total amount Q
alwayscomprise three parts, one is the furfural content Q after solid insulation ageing in transformer oil
oil, two are furfural content Q in insulating paper
paper, three are transformer oil furfural content Q of removing of mode after filtration in Repair of Transformer process
filter, i.e. Q
always=Q
oil+ Q
paper+ Q
filter; Comprise the following steps:
1) be ultimate value time in setting operation, the degree of polymerization of electric power transformer insulated paper drops to 250, namely when furfural content in transformer oil is greater than 4 mg/L, insulating paper is completely aging, and namely transformer whole dielectric level is in late period in life-span, is designated as Q
always=4 mg/L;
2) calculate with the insulating paper of 1kg unit, a certain amount of new insulating paper is immersed in the transformer oil of known furfural content, setting the different time carries out transformer oil furfural content mensuration, when the furfural content recorded is without significant change, calculate the absorptance of insulating paper to furfural in oil, thus calculate the adsorbable furfural content of 1kg insulating paper, be designated as the furfural content Q in insulating paper
paper;
3) existing old transformer is utilized, add the furfural of aimed concn, analogue transformer is various relates to the maintenance process of draining the oil, dissimilar oil filtering unit is adopted to carry out oil strain to this transformer respectively, then furfural content mensuration is carried out, deduct the furfural content after oil strain with aimed concn, be the furfural content Q that removes of mode after filtration of transformer oil in Repair of Transformer process
filter;
4) basis: Q
always=Q
oil+ Q
paper+ Q
filter,transformation for mula obtains: Q
oil=Q
always-Q
paper-Q
filter; Due to Q
alwaysfor fixed value, Q
paper, Q
filtermeasure and drawn, then the furfural content Q after solid insulation ageing in transformer oil
oilcan determine;
5) by Q that above step calculates
oilbe the furfural content in transformer oil after solid insulation ageing;
6) therefore, in transformer state evaluation procedure, as long as the furfural content recorded in transformer oil reaches Q
oilabove, be then judged to be that the integral insulation level of this transformer is in late period in life-span, corresponding maintenance measure should be taked.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410314162.2A CN104062420B (en) | 2014-07-04 | 2014-07-04 | The appraisal procedure of electric power transformer insulated paper ageing state in a kind of operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410314162.2A CN104062420B (en) | 2014-07-04 | 2014-07-04 | The appraisal procedure of electric power transformer insulated paper ageing state in a kind of operation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104062420A CN104062420A (en) | 2014-09-24 |
| CN104062420B true CN104062420B (en) | 2015-10-28 |
Family
ID=51550227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410314162.2A Active CN104062420B (en) | 2014-07-04 | 2014-07-04 | The appraisal procedure of electric power transformer insulated paper ageing state in a kind of operation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104062420B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105784977A (en) * | 2016-05-11 | 2016-07-20 | 林光琴 | Insulation paper aging performance judging method of power transformer |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104502488B (en) * | 2015-01-06 | 2016-02-03 | 国家电网公司 | A kind of method of oil-immersed power transformer insulation ag(e)ing scale evaluation |
| CN105866390B (en) * | 2016-06-21 | 2017-12-29 | 江苏惠聪科技有限公司 | Electric power transformer insulated method of evaluating performance |
| CN106124701B (en) * | 2016-06-21 | 2018-06-26 | 王元廷 | Power transformer performance monitoring system |
| CN106199234A (en) * | 2016-06-22 | 2016-12-07 | 国家电网公司 | A kind of transformator residual life detection method based on health index |
| CN108872101A (en) * | 2018-05-10 | 2018-11-23 | 广东电网有限责任公司电力科学研究院 | A kind of appraisal procedure and detection system of transformer degree of aging |
| CN108802581A (en) * | 2018-06-14 | 2018-11-13 | 国网江苏省电力有限公司电力科学研究院 | Transformer solid insulation aging assessment based on furfural balance model |
| CN110553977A (en) * | 2019-10-18 | 2019-12-10 | 云南电网有限责任公司电力科学研究院 | Method for judging aging of insulating paper in transformer insulating oil |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5309776A (en) * | 1991-01-14 | 1994-05-10 | Mitsubishi Denki Kabushiki Kaisha | Method of diagnosing deterioration of insulating paper in oil-filled electric apparatus |
| CN101887094A (en) * | 2010-06-30 | 2010-11-17 | 河南省电力公司济源供电公司 | Judging method of solid insulating and aging degrees of transformer |
| CN203054023U (en) * | 2013-02-28 | 2013-07-10 | 中国南方电网有限责任公司超高压输电公司贵阳局 | Winding model of accelerated heating aging test of oil paper insulation |
| CN103245519A (en) * | 2013-04-17 | 2013-08-14 | 华北电力大学 | Device and method for evaluating oil paper insulation aging and predicting service life of transformer |
| CN203205186U (en) * | 2013-04-11 | 2013-09-18 | 特变电工衡阳变压器有限公司 | Simple monitoring device for solid insulation aging state of transformer |
| CN203232031U (en) * | 2013-05-15 | 2013-10-09 | 国家电网公司 | Transformer oil and insulation paper aging test simulation test device |
| CN103823162A (en) * | 2013-12-09 | 2014-05-28 | 济源市科灵电器有限责任公司 | Power transformer insulation aging state assessment method based on frequency domain Cole-Davidson model |
-
2014
- 2014-07-04 CN CN201410314162.2A patent/CN104062420B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5309776A (en) * | 1991-01-14 | 1994-05-10 | Mitsubishi Denki Kabushiki Kaisha | Method of diagnosing deterioration of insulating paper in oil-filled electric apparatus |
| CN101887094A (en) * | 2010-06-30 | 2010-11-17 | 河南省电力公司济源供电公司 | Judging method of solid insulating and aging degrees of transformer |
| CN203054023U (en) * | 2013-02-28 | 2013-07-10 | 中国南方电网有限责任公司超高压输电公司贵阳局 | Winding model of accelerated heating aging test of oil paper insulation |
| CN203205186U (en) * | 2013-04-11 | 2013-09-18 | 特变电工衡阳变压器有限公司 | Simple monitoring device for solid insulation aging state of transformer |
| CN103245519A (en) * | 2013-04-17 | 2013-08-14 | 华北电力大学 | Device and method for evaluating oil paper insulation aging and predicting service life of transformer |
| CN203232031U (en) * | 2013-05-15 | 2013-10-09 | 国家电网公司 | Transformer oil and insulation paper aging test simulation test device |
| CN103823162A (en) * | 2013-12-09 | 2014-05-28 | 济源市科灵电器有限责任公司 | Power transformer insulation aging state assessment method based on frequency domain Cole-Davidson model |
Non-Patent Citations (1)
| Title |
|---|
| 糠醛浓度判断变压器绝缘纸寿命的现场测量;张潮海;《高电压技术》;20011231;第27卷(第6期);46-47 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105784977A (en) * | 2016-05-11 | 2016-07-20 | 林光琴 | Insulation paper aging performance judging method of power transformer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104062420A (en) | 2014-09-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104062420B (en) | The appraisal procedure of electric power transformer insulated paper ageing state in a kind of operation | |
| CN102944777B (en) | Cable detection method in serviceable life | |
| CN102621457B (en) | On-line detection method of metal oxide arrester insulating property influencing factor | |
| CN104155528A (en) | Method for testing transformer oil paper insulation frequency domain dielectric response and device thereof | |
| CN104198949A (en) | Battery health state detection method | |
| TW201144799A (en) | Fill sufficiency method and system | |
| CN104316847A (en) | On-line monitoring and positioning system for partial discharge of transformer station | |
| CN104330019A (en) | Transformer winding deformation identification method based on short-circuit fault recorder information | |
| CN104597132A (en) | Resonant acoustics-based porcelain support insulator hot-line detection method | |
| CN203643560U (en) | Novel cable partial discharge monitoring device | |
| RU112525U1 (en) | AUTOMATED DIAGNOSTIC AND MONITORING SYSTEM OF POWER CABLE LINES INSULATION | |
| CN102798758B (en) | Method and system for measuring series reactance rate of shunt capacitor bank | |
| CN103983848B (en) | A kind of capacitor resonant tank early warning system based on capacitor branches monitoring point and method for early warning | |
| CN105021871B (en) | Under a kind of imperfect information, cable run Leakage Current determines method | |
| CN103091608B (en) | Research and experiment platform for relationship between power transformer partial discharge and gas production rate and measuring method | |
| WO2015074412A1 (en) | Gis field oscillation type impulse withstand voltage test waveform adjustment system and method | |
| CN104034977B (en) | Capacitance type potential transformer live detection instrument | |
| Oukaour et al. | Electrical double-layer capacitors diagnosis using least square estimation method | |
| JPWO2014207832A1 (en) | Insulation monitoring device | |
| CN104502411A (en) | Insulator salt density on-line monitoring device | |
| CN204269734U (en) | One is high-voltage insulation monitoring device independently | |
| CN204101663U (en) | Lightning arrester with electrical testing meter | |
| CN203479976U (en) | Transformer winding discharge test apparatus | |
| CN202947987U (en) | Moisture content detection device for surrounding rock of mine | |
| CN107194178B (en) | Transformer furfural content residual life prediction method considering oil filtering mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |