CN110608767A - Transformer state evaluation method and device by using reference state analysis - Google Patents
Transformer state evaluation method and device by using reference state analysis Download PDFInfo
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- CN110608767A CN110608767A CN201910744540.3A CN201910744540A CN110608767A CN 110608767 A CN110608767 A CN 110608767A CN 201910744540 A CN201910744540 A CN 201910744540A CN 110608767 A CN110608767 A CN 110608767A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q10/00—Administration; Management
- G06Q10/06—Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
- G06Q10/063—Operations research, analysis or management
- G06Q10/0639—Performance analysis of employees; Performance analysis of enterprise or organisation operations
Abstract
The invention discloses a transformer state evaluation method and a transformer state evaluation device by using reference state analysis, wherein the transformer state evaluation method comprises a data extraction module, a primary processing module, a fault diagnosis module, a state evaluation module and an evaluation data transmission sharing module, and is used for extracting and storing data of a transformer; diagnosing the fault of the transformer; evaluating the state of the transformer; carrying out transmission sharing on the evaluated data; the transformer detection and evaluation system can detect and evaluate the transformer without shutdown, the data extraction module is used for extracting and detecting data in the transformer, the detection result is accurate, the detected data can be stored and compared conveniently, an alarm can be given when the transformer fails, the failure data is stored, the detection blindness can be avoided, the evaluation data transmission sharing module realizes the visualization of the evaluation data and the remote transmission of the evaluation data, and workers can know the state of the transformer conveniently.
Description
Technical Field
The invention relates to the technical field of transformer state evaluation, in particular to a transformer state evaluation method and device by using reference state analysis.
Background
With the increasing power load and the increasing stability requirement of the power system, the state monitoring and fault diagnosis technology of the transformer electrical equipment is receiving general attention. The transformer is an important power device for connecting the links of receiving, transmitting and distributing electricity. With the development of economy, the increase of power load and voltage level, the influence of the reliability of the operation of the transformer on the stability of a power system is more obvious, and when the transformer operates, the performance of the transformer is gradually deteriorated and the operation state is deteriorated under the influence of various factors such as electricity, heat, machinery, environment and the like, so that various faults can be caused.
At present, the state of the transformer is evaluated by adopting a method of periodic test maintenance, the periodic test maintenance is blind, the periodic test maintenance is mostly carried out off line, and shutdown and power failure are needed during maintenance, so that economic loss is caused. For some important equipment, the equipment cannot be stopped easily, so that the periodic test and maintenance are difficult to complete, and even if the equipment to be detected can be stopped, the test result is prone to deviation due to the difference between the transformer state during operation and the transformer state after the operation. On the other hand, the inspection and maintenance may cause excessive maintenance, which may damage the performance of the transformer.
Disclosure of Invention
The present invention is directed to overcoming the above problems in the prior art and providing a method and an apparatus for evaluating a state of a transformer using a reference state analysis.
In order to achieve the technical purpose and achieve the technical effect, the invention is realized by the following technical scheme:
a transformer state evaluation method using reference state analysis includes the following steps:
s1, extracting and storing the data of the transformer;
s2, diagnosing the fault of the transformer;
s3, evaluating the state of the transformer;
and S4, carrying out transmission sharing on the evaluated data.
Further, the data for the transformer includes gas content in the oil, oil temperature, winding turn temperature, load current and voltage, and cooling pump fan operating parameters.
Further, gas contained in the oil is dialyzed by a membrane method, the gas dissolved in the oil is dialyzed into a gas chamber from an oil chamber through a membrane by utilizing the permeability of a membrane material, and the content of each gas component is detected by a chromatographic column method.
A transformer state evaluation device utilizing reference state analysis comprises a data extraction module, a primary processing module, a fault diagnosis module, a state evaluation module and an evaluation data transmission sharing module.
Further, the data extraction module comprises an oil-in-gas extraction module, an oil temperature and turn winding temperature detection module, a load current and voltage detection module and a cooling pump fan operation parameter detection module.
Further, the preliminary treatment module is a chromatographic column detection module.
Further, the gas in oil extraction module is membrane dialysis.
Further, the fault diagnosis module comprises a transformer fault diagnosis module, a transformer fault alarm module and a fault diagnosis data storage module.
Further, the state evaluation module includes a transformer state evaluation module and a state evaluation data store.
Further, the evaluation data transmission sharing module comprises an evaluation data visualization module and an evaluation data remote transmission module.
The benefit effects of the invention are:
the transformer state evaluation system can detect and evaluate the transformer under the condition of no shutdown, the data extraction module is used for extracting and detecting data in the transformer, the detection result is accurate, the detected data can be stored and compared conveniently, an alarm can be given when the transformer fails, the fault data can be stored, the detection blindness can be avoided, the state of the transformer is evaluated and the evaluation data is stored through the state evaluation module, the evaluation data transmission sharing module realizes the visualization of the evaluation data and the remote transmission of the evaluation data, and workers can know the state of the transformer conveniently.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a system of an evaluation apparatus according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention relates to a transformer state evaluation method by utilizing reference state analysis, which comprises the following steps:
s1, extracting and storing the data of the transformer;
s2, diagnosing the fault of the transformer;
s3, evaluating the state of the transformer;
and S4, carrying out transmission sharing on the evaluated data.
Wherein, the data to the transformer includes the gas content in the oil, the oil temperature, the winding temperature of the wire loop, the load current and voltage and the cooling pump fan operating parameter, the gas contained in the oil is dialyzed by the film method, the gas dissolved in the oil is dialyzed into the gas chamber from the oil chamber through the film by using the permeability of the film material, when the permeation time is long enough, the gas concentration C permeated into the gas chamber is stable and is in direct proportion to the concentration v of the gas dissolved in the oil, as shown in the following formula,
the contents of all gas components are detected by a chromatographic column method, after gases with different characteristics are separated by the chromatographic column according to the precipitation time, the contents of all the gas components are detected by a sensor, and the fault type of the transformer can be preliminarily judged according to the gas detection result, as shown in the following table.
| Type of failure | Main gas component | Secondary gas component |
| Oil superheating | CH4 C2H4 | H2 C2H6 |
| Oil and paper superheating | CH4 C2H4 CO CO2 | H2 C2H6 |
| Oil and paper insulation partial discharge | H2 CH4 CO | C2H2 C2H6 CO2 |
| Spark discharge in oil | H2 C2H2 | |
| Electric arc in oil | H2 C2H2 | CH4 C2H4 C2H6 |
| Electric arc in oil and paper | H2 C2H2 COCO2 | CH4 C2H4 C2H6 |
As shown in FIG. 1, a transformer state evaluation device using reference state analysis comprises a data extraction module, a primary processing module, a fault diagnosis module, a state evaluation module and an evaluation data transmission sharing module
The data extraction module comprises an oil gas extraction module, an oil temperature and turn winding temperature detection module, a load current and voltage detection module and a cooling pump fan operation parameter detection module, the preliminary processing module is a chromatographic column detection module, and the oil gas extraction module is membrane dialysis.
The fault diagnosis module comprises a transformer fault diagnosis module, a transformer fault alarm module and a fault diagnosis data storage module.
The state evaluation module comprises a transformer state evaluation module and a state evaluation data storage.
The evaluation data transmission sharing module comprises an evaluation data visualization module and an evaluation data remote transmission module.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (10)
1. A transformer state evaluation method by using reference state analysis is characterized by comprising the following steps:
s1, extracting and storing the data of the transformer;
s2, diagnosing the fault of the transformer;
s3, evaluating the state of the transformer;
and S4, carrying out transmission sharing on the evaluated data.
2. The method according to claim 1, wherein the method comprises: data for the transformer include gas content in the oil, oil temperature, turn winding temperature, load current and voltage, and cooling pump fan operating parameters.
3. The method according to claim 2, wherein the method comprises: the gas contained in the oil is dialyzed out by a film method, the gas dissolved in the oil is dialyzed into a gas chamber from an oil chamber through a film by utilizing the permeability of a film material, and the content of each gas component is detected by a chromatographic column method.
4. A transformer state evaluation device using a reference state analysis, characterized in that: the device comprises a data extraction module, a primary processing module, a fault diagnosis module, a state evaluation module and an evaluation data transmission sharing module.
5. The transformer state evaluation device using the reference state analysis according to claim 4, wherein: the data extraction module comprises an oil-in-gas extraction module, an oil temperature and turn winding temperature detection module, a load current and voltage detection module and a cooling pump fan operation parameter detection module.
6. The transformer state evaluation device using the reference state analysis according to claim 4, wherein: the preliminary treatment module is a chromatographic column detection module.
7. The transformer state evaluation device using the reference state analysis according to claim 5, wherein: the gas in oil extraction module is membrane dialysis.
8. The transformer state evaluation device using the reference state analysis according to claim 4, wherein: the fault diagnosis module comprises a transformer fault diagnosis module, a transformer fault alarm module and a fault diagnosis data storage module.
9. The transformer state evaluation device using the reference state analysis according to claim 4, wherein: the state evaluation module comprises a transformer state evaluation module and a state evaluation data storage.
10. The transformer state evaluation device using the reference state analysis according to claim 4, wherein: the evaluation data transmission sharing module comprises an evaluation data visualization module and an evaluation data remote transmission module.
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| CN104076229A (en) * | 2014-07-16 | 2014-10-01 | 胡小青 | Thermal fault detecting system for power transmission transformer |
| CN104112239A (en) * | 2014-07-03 | 2014-10-22 | 深圳供电局有限公司 | Method and device for transformer state assessment based on benchmark state analysis |
| CN106885960A (en) * | 2017-02-17 | 2017-06-23 | 石家庄铁道大学 | The Diagnosis Method of Transformer Faults and system of a kind of online monitoring data |
| US20170199170A1 (en) * | 2014-08-27 | 2017-07-13 | Mitsubishi Electric Corporation | Method for diagnosing oil-filled electrical apparatus |
| CN107228913A (en) * | 2017-06-09 | 2017-10-03 | 广西电网有限责任公司电力科学研究院 | A kind of condition diagnosing system of transformer fault type |
| CN108008669A (en) * | 2017-11-14 | 2018-05-08 | 安徽徽远成电气科技股份有限公司 | System is protected in a kind of detection applied to transformer |
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2019
- 2019-08-13 CN CN201910744540.3A patent/CN110608767A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203249900U (en) * | 2013-03-25 | 2013-10-23 | 辽宁省电力有限公司鞍山供电公司 | On-line monitoring device of transformer oil chromatograph |
| CN104112239A (en) * | 2014-07-03 | 2014-10-22 | 深圳供电局有限公司 | Method and device for transformer state assessment based on benchmark state analysis |
| CN104076229A (en) * | 2014-07-16 | 2014-10-01 | 胡小青 | Thermal fault detecting system for power transmission transformer |
| US20170199170A1 (en) * | 2014-08-27 | 2017-07-13 | Mitsubishi Electric Corporation | Method for diagnosing oil-filled electrical apparatus |
| CN106885960A (en) * | 2017-02-17 | 2017-06-23 | 石家庄铁道大学 | The Diagnosis Method of Transformer Faults and system of a kind of online monitoring data |
| CN107228913A (en) * | 2017-06-09 | 2017-10-03 | 广西电网有限责任公司电力科学研究院 | A kind of condition diagnosing system of transformer fault type |
| CN108008669A (en) * | 2017-11-14 | 2018-05-08 | 安徽徽远成电气科技股份有限公司 | System is protected in a kind of detection applied to transformer |
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