CN103020431A - Oil-immersed transformer status evaluation modeling method and oil-immersed transformer status evaluation system - Google Patents
Oil-immersed transformer status evaluation modeling method and oil-immersed transformer status evaluation system Download PDFInfo
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- CN103020431A CN103020431A CN2012105016238A CN201210501623A CN103020431A CN 103020431 A CN103020431 A CN 103020431A CN 2012105016238 A CN2012105016238 A CN 2012105016238A CN 201210501623 A CN201210501623 A CN 201210501623A CN 103020431 A CN103020431 A CN 103020431A
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Abstract
The invention discloses an oil-immersed transformer status evaluation modeling method, which comprises the following steps: (1) building a data model of N: 1 relationship of a calculation factor layer, a mark deduction formula layer, a component classification layer and a device layer in sequence according to the status variable mark deduction standard of an oil-immersed transformer; and (2) judging whether a mark deducting formula works according to a calculation factor, counting and accumulating the deducted marks of a component according to the mark deducting formula, analyzing the status level of the component according to the deducted marks of the component, and taking a device status level as the maximum value of the status level of the component. The invention further provides a transformer evaluation system. According to the method, classified and layer modeling is performed on a given oil-immersed transformer status variable mark-deducting standard, calculation and counting are performed from a low layer to a high layer, and the status level of the transformer is evaluated according to the marks deducted by classification so as to provide the basis for the status maintenance of the transformer and improve the running stability and reliability of a power grid.
Description
Technical field
The present invention relates to a kind of field of power, and particularly relevant for a kind of modeling method and evaluation system thereof of oil-filled transformer state evaluation.
Background technology
The safety of equipment is the basis of power grid security, reliable, stable operation, to equipment carry out effectively, accurately monitoring and state evaluation, be the important channel of improving power supply reliability and operation of power networks intelligent level.Along with the continuous expansion of electrical network scale, electrical network monitors and the operation maintenance workload increases day by day, and it is also increasingly universal that long-range working condition to transforming plant primary equipment is carried out the technology of Real-Time Monitoring and analysis.Guizhou Power Grid company has built Guizhou Power Grid converting equipment on-line monitoring system, and the electric power primary equipment in whole Guizhou Province is carried out remote monitoring and analysis.
Complete feasible state evaluation rule is the basis that equipment state is estimated.In order to overcome the miscellaneous evaluation rule of current different manufacturers, realize with unified model the whole province's equipment state being carried out statistical study, must formulate complete feasible equipment state evaluation model.
Oil-filled transformer it is monitored the ruuning situation that can accurately reflect equipment with state evaluation, and the quality of its running status is directly connected to the safe operation of electric system as the important primary equipment of electric system.How oil-filled transformer state evaluation rule being carried out unified Modeling is the basis of realizing electric system first and second equipment unified monitoring and management.
Summary of the invention
The object of the invention is to provide a kind of modeling method and evaluation system thereof of oil-filled transformer state evaluation, running state of transformer in the scope of paying close attention to is carried out statistical study, for Condition Maintenance Method of Transformer provides foundation, improve stability and the reliability of operation of power networks.
For reaching above-mentioned purpose, the present invention proposes a kind of modeling method of oil-filled transformer state evaluation, comprises the following steps:
1) sets up successively the data model that concerns under the N:1 according to the quantity of state standard of deducting point of oil-filled transformer by calculated factor layer, deduction of points formula layer, part classification layer and mechanical floor;
2) judge according to calculated factor whether the deduction of points formula is set up, and adds up the parts deduction of points value that adds up out according to the deduction of points formula, analyzes the unit status grade according to parts deduction of points value, and the equipment state grade is unit status grade maximal value.
Further; the part classification layer is divided into seven kinds of body, sleeve pipe, load ratio bridging switch, cooling system, non electrical quantity protection system, on-Line Monitor Device and defect situation; each all comprises " total penalties value " and a plurality of attributes such as " state grades "; wherein " total penalties value " attribute is the deduction of points summation of its lower deduction of points formula layer; " state grade " attribute draws after judging according to above-mentioned guide rule content, total normal, attention, unusual and serious four kinds of states.
Further, deduction of points formula layer comprises " deduction of points value " and " maintenance index " attribute, and wherein " maintenance index " attribute is the Strategies of Maintenance that provides according to the set regulation of inspection and repair, is divided into to be A, B, C, the maintenance of D four classes.
Further, the calculated factor layer comprises " standard of deducting point ", " weight ", " basic deduction of points " and " should deduction of points value " attribute, and wherein " should deduction of points value " be the product of " weight " and " substantially deducting points ".
On the other hand, the present invention also provides a kind of oil-filled transformer state evaluation system, and this system adopts this modeling method to realize.This evaluation system specifically comprises calculated factor layer, deduction of points formula layer, part classification layer and mechanical floor, and concerns under setting up successively N:1 according to the quantity of state standard of deducting point of oil-filled transformer between each layer; Wherein, judge according to calculated factor whether the deduction of points formula is set up, and adds up the parts deduction of points value that adds up out according to the deduction of points formula, analyzes the unit status grade according to parts deduction of points value, and the equipment state grade is unit status grade maximal value.
The invention has the beneficial effects as follows: the evaluation model of having set up oil-filled transformer, standard the hierarchy of oil-filled transformer state evaluation, can be from parts, equipment, factory station, the area is understood equipment state at many levels and add up, provides basic for realizing electric system first and second equipment unified monitoring and management.
Description of drawings
Fig. 1 is the evaluation model synoptic diagram that the modeling method of the oil-filled transformer state evaluation of the embodiment of the invention is set up.
Fig. 2 is transformer part classification layer model among Fig. 1.
Fig. 3 is transformer deduction of points formula layer model among Fig. 1.
Fig. 4 is transformer calculated factor layer model among Fig. 1.
Embodiment
In order more to understand technology contents of the present invention, especially exemplified by specific embodiment and cooperate appended graphic being described as follows.
As shown in Figure 1, the transformer evaluation model comprises part classification layer, deduction of points formula layer and calculated factor layer.Each calculated factor value yi of systematic analysis or artificial judgment, (i=0,1 ... m), according to each calculated factor valve system analysis respectively deduct points formula value fj (y0 ..., ym), (j=0,1 ..., n), cumulative deduction of points formula pk=f0+ ... ,+fn, (k=0,1 ..., l), get each parts deduction of points total value, analyze total each the unit status grade Ak (pk) of being worth of each parts deduction of points, whole equipment state grade be Max (A0 (p0) ..., Al (pl)).
The main contents of each layer of oil-filled transformer evaluation model are as follows:
(1) transformer part classification layer main contents
As shown in Figure 2, transformer evaluation model part classification layer is divided into and is seven kinds of body, sleeve pipe, load ratio bridging switch, cooling system, non electrical quantity protection system, on-Line Monitor Device and defect situation.Each all comprises " total penalties value " and a plurality of attributes such as " state grades ".Wherein " total penalties value " attribute is deduction of points summation of its lower deduction of points formula layer, and " state grade " attribute draws after judging according to above-mentioned guide rule content, total normal, attention, unusual and serious four kinds of states.
(2) transformer deduction of points formula layer main contents
As shown in Figure 3, transformer evaluation model deduction of points formula layer is different according to associated components, and entry number is also different, but each all comprises " deduction of points value " and a plurality of attributes such as " maintenance index ".Wherein " maintenance index " attribute is the Strategies of Maintenance that provides according to the set regulation of inspection and repair, is divided into to be A, B, C, the maintenance of D four classes.
(3) transformer calculated factor layer main contents
As shown in Figure 4, transformer evaluation model calculated factor layer is different according to affiliated deduction of points formula, and the formula number is also different, but each all comprises a plurality of attributes such as " standard of deducting point ", " weight ", " basic deduction of points " and " should deduction of points value ".Wherein " should deduction of points value " be the product of " weight " and " basic deduction of points ".
In sum, the present invention is by layered modeling that given oil-filled transformer quantity of state standard of deducting point is classified, by layer counting statistics successively from low to high, according to each classification deduction of points assessment transformer state grade, for Condition Maintenance Method of Transformer provides foundation, improve stability and the reliability of operation of power networks.
Although the present invention discloses as above with preferred embodiment, so it is not to limit the present invention.The persond having ordinary knowledge in the technical field of the present invention, without departing from the spirit and scope of the present invention, when being used for a variety of modifications and variations.Therefore, protection scope of the present invention is as the criterion when looking claims person of defining.
Claims (10)
1. the modeling method of an oil-filled transformer state evaluation is characterized in that, comprises the following steps:
1) sets up successively the data model that concerns under the N:1 according to " 110kV～500kV oil-immersed power transformer state evaluation guide rule " by calculated factor layer, deduction of points formula layer, part classification layer and mechanical floor;
2) judge according to calculated factor whether the deduction of points formula is set up, and adds up the parts deduction of points value that adds up out according to the deduction of points formula, analyzes the unit status grade according to parts deduction of points value, and the equipment state grade is unit status grade maximal value.
2. the modeling method of oil-filled transformer state evaluation according to claim 1; it is characterized in that; wherein the part classification layer is divided into seven kinds of body, sleeve pipe, load ratio bridging switch, cooling system, non electrical quantity protection system, on-Line Monitor Device and defect situation; each all comprises " total penalties value " and a plurality of attributes such as " state grades "; wherein " total penalties value " attribute is the deduction of points summation of its lower deduction of points formula layer, and " state grade " attribute draws after judging according to " 110kV～500kV oil-immersed power transformer state evaluation guide rule ".
3. the modeling method of oil-filled transformer state evaluation according to claim 2 is characterized in that, described " state grade " is total normal, attention, unusual and serious four kinds of states.
4. the modeling method of oil-filled transformer state evaluation according to claim 1, it is characterized in that, the formula layer of wherein deducting points comprises " deduction of points value " and " maintenance index " attribute, wherein " maintenance index " attribute is the Strategies of Maintenance that provides according to the set regulation of inspection and repair, is divided into to be A, B, C, the maintenance of D four classes.
5. the modeling method of oil-filled transformer state evaluation according to claim 1, it is characterized in that, wherein the calculated factor layer comprises " standard of deducting point ", " weight ", " basic deduction of points " and " should deduction of points value " attribute, and wherein " should deduction of points value " be the product of " weight " and " substantially deducting points ".
6. oil-filled transformer state evaluation system, it is characterized in that, comprise calculated factor layer, deduction of points formula layer, part classification layer and mechanical floor, and set up successively the affiliated relation of N:1 according to " 110kV～500kV oil-immersed power transformer state evaluation guide rule " between each layer; Wherein, judge according to calculated factor whether the deduction of points formula is set up, and adds up the parts deduction of points value that adds up out according to the deduction of points formula, analyzes the unit status grade according to parts deduction of points value, and the equipment state grade is unit status grade maximal value.
7. oil-filled transformer state evaluation according to claim 6 system; it is characterized in that; wherein the part classification layer is divided into seven kinds of body, sleeve pipe, load ratio bridging switch, cooling system, non electrical quantity protection system, on-Line Monitor Device and defect situation; each all comprises " total penalties value " and a plurality of attributes such as " state grades "; wherein " total penalties value " attribute is the deduction of points summation of its lower deduction of points formula layer, and " state grade " attribute draws after judging according to above-mentioned guide rule content.
8. oil-filled transformer state evaluation according to claim 7 system is characterized in that, total normal, the attention of wherein said " state grade " attribute, unusual and serious four kinds of states.
9. oil-filled transformer state evaluation according to claim 6 system, it is characterized in that, the formula layer of wherein deducting points comprises " deduction of points value " and " maintenance index " attribute, wherein " maintenance index " attribute is the Strategies of Maintenance that provides according to the set regulation of inspection and repair, is divided into to be A, B, C, the maintenance of D four classes.
10. oil-filled transformer state evaluation according to claim 6 system, it is characterized in that, wherein the calculated factor layer comprises " standard of deducting point ", " weight ", " basic deduction of points " and " should deduction of points value " attribute, and wherein " should deduction of points value " be the product of " weight " and " substantially deducting points ".
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| CN2012105016238A CN103020431A (en) | 2012-11-29 | 2012-11-29 | Oil-immersed transformer status evaluation modeling method and oil-immersed transformer status evaluation system |
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| CN2012105016238A CN103020431A (en) | 2012-11-29 | 2012-11-29 | Oil-immersed transformer status evaluation modeling method and oil-immersed transformer status evaluation system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105867346A (en) * | 2016-03-24 | 2016-08-17 | 国家电网公司 | State evaluation and maintenance decision support method for transformer |
| CN106327103A (en) * | 2016-08-31 | 2017-01-11 | 北京中科锐智电气有限公司 | Distribution room operating state evaluation system and evaluation method |
| CN108828342A (en) * | 2018-03-30 | 2018-11-16 | 广州供电局有限公司 | Status of electric power detection method, device, computer equipment and storage medium |
| CN115222255A (en) * | 2022-07-20 | 2022-10-21 | 贵州电网有限责任公司 | State evaluation method, device and medium for oil-immersed power transformer |
-
2012
- 2012-11-29 CN CN2012105016238A patent/CN103020431A/en active Pending
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| 宋岩峰: "廊坊供电公司变电设备状态检修管理研究", 《中国优秀硕士学位论文全文数据库 经济与管理科学辑》 * |
| 石岩辉 等: "换流变压器状态评价分析探讨", 《电气时代》 * |
| 钟顺帆 等: "110KV及以上变压器（电抗器）状态评估方法及案例", 《南方电网技术》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105867346A (en) * | 2016-03-24 | 2016-08-17 | 国家电网公司 | State evaluation and maintenance decision support method for transformer |
| CN106327103A (en) * | 2016-08-31 | 2017-01-11 | 北京中科锐智电气有限公司 | Distribution room operating state evaluation system and evaluation method |
| CN108828342A (en) * | 2018-03-30 | 2018-11-16 | 广州供电局有限公司 | Status of electric power detection method, device, computer equipment and storage medium |
| CN108828342B (en) * | 2018-03-30 | 2019-12-10 | 广州供电局有限公司 | Power equipment state detection method and device, computer equipment and storage medium |
| CN115222255A (en) * | 2022-07-20 | 2022-10-21 | 贵州电网有限责任公司 | State evaluation method, device and medium for oil-immersed power transformer |
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Application publication date: 20130403 |