CN105937876B - A kind of detection system and its detection method of deformation of transformer winding - Google Patents
A kind of detection system and its detection method of deformation of transformer winding Download PDFInfo
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- CN105937876B CN105937876B CN201610553500.7A CN201610553500A CN105937876B CN 105937876 B CN105937876 B CN 105937876B CN 201610553500 A CN201610553500 A CN 201610553500A CN 105937876 B CN105937876 B CN 105937876B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/16—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
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Abstract
The invention discloses a kind of detection systems of deformation of transformer winding, including signal input module, for inputting detection signal to transformer primary side；Signal acquisition module is acquired for the response signal to transformer；Data processing module obtains corresponding short-circuit impedance percentage for carrying out calculation process to response signal；Signal correction module is stored for the response signal to transformer, and is modified according to known response signal to detection signal；Detection module detects deformation of transformer winding using the short-circuit impedance percentage of transformer.The invention also discloses a kind of detection methods of the detection system of above-mentioned deformation of transformer winding.The present invention can improve the deficiencies in the prior art, improve the accuracy in detection when transformer load frequently fluctuates widely.
Description
Technical field
The present invention relates to transformer technology field, the detection system of especially a kind of deformation of transformer winding and its detection side
Method.
Background technique
Transformer is one of most important equipment in electric system, expensive and important, when transformer breaks down
The normal work of electric system will be will affect, and then bring loss to national economy.However transformer winding be break down compared with
Therefore one of more component finds the potential threat of transformer winding as early as possible, find that deformation of transformer winding is critically important in time.
When outlet short circuit occurs for transformer, suffered electrodynamic tens when electric power suffered by winding will be up
Even hundred times.Simultaneously because design of transformer structure cannot reach the receiving short-circuit capacity of national regulations so that transformer
After bearing short-circuit current rush mechanically deform occurs for winding.Electric power is unlikely to deform winding directly in some cases, but
Also winding deformation can be made further to develop by cumulative effect, even if not occurring system short-circuit accident, it is non-just to also result in transformer
It is often out of service.
Chinese invention patent 201310329476.5 discloses a kind of deformation of transformer winding online test method and system,
The detection of winding deformation is realized under the premise of not influencing power supply continuity.But this detection mode is in transformer load
Use when frequently fluctuating widely, error is larger, can not obtain accurate result.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of detection system of deformation of transformer winding and its detection method,
The deficiencies in the prior art are able to solve, the accuracy in detection when transformer load frequently fluctuates widely is improved.
In order to solve the above technical problems, the technical solution used in the present invention is as follows.
A kind of detection system of deformation of transformer winding, it is characterised in that: including,
Signal input module, for inputting detection signal to transformer primary side；
Signal acquisition module is acquired for the response signal to transformer；
Data processing module obtains corresponding short-circuit impedance percentage for carrying out calculation process to response signal；
Signal correction module is stored for the response signal to transformer, and according to known response signal to inspection
Signal is surveyed to be modified；
Detection module detects deformation of transformer winding using the short-circuit impedance percentage of transformer.
A kind of detection method of the detection system of above-mentioned deformation of transformer winding, comprising the following steps:
A, Circuit Fault on Secondary Transformer is shorted, input voltage is added to transformer primary side in signal input module, measures transformation
The electric current of device secondary side, when the electric current of Circuit Fault on Secondary Transformer reaches rated current, signal acquisition module is to transformer primary side
On voltage be acquired；
B, data processing module using on the transformer primary side measured in step A voltage and transformer primary side volume
Constant voltage is compared, and obtains the first short-circuit impedance percentage；
C, Circuit Fault on Secondary Transformer is shorted, input voltage is added to transformer primary side in signal input module, measures transformation
The electric current of device primary side, when the electric current of transformer primary side reaches rated current, signal acquisition module is to transformer primary side
On voltage be acquired；
D, the signal correction module input of the first short-circuit impedance percentage to signal input module according to obtained in step B
Voltage is modified；
E, data processing module uses the voltage and transformer one on the transformer primary side measured after step D amendment
The voltage rating of secondary side is compared, and obtains the second short-circuit impedance percentage；
F, Circuit Fault on Secondary Transformer is shorted, input voltage is added to transformer primary side in signal input module, measures transformation
The electric current of device primary side, when the electric current of transformer primary side reaches rated current, signal acquisition module is to transformer primary side
On voltage and Circuit Fault on Secondary Transformer on electric current be acquired；
G, the signal correction module input of the second short-circuit impedance percentage to signal input module according to obtained in step E
Voltage is modified；
H, the input voltage and transformer secondary for the transformer primary side that data processing module is measured after being corrected using step G
Electric current on side is compared, and obtains third short-circuit impedance percentage；
I, detection module detects deformation of transformer winding using the short-circuit impedance percentage of transformer.
Preferably, in step A, to transformer primary side the frequency of input voltage is added by 20Hz extremely in signal input module
100Hz is linearly increasing.
Preferably, data processing module obtains first short circuit synchronous with input voltage frequency increase trend in step B
Impedance percentage curve.
Preferably, in step C, to transformer primary side the frequency of input voltage is added by 20Hz extremely in signal input module
100Hz is linearly increasing；Then in step D, according to the impedance magnitude of the first short-circuit impedance percentage curve, to corresponding frequencies
Input voltage is weighted amendment, and weighting coefficient is directly proportional to the impedance magnitude of the first short-circuit impedance percentage curve.
Preferably, data processing module obtains second short circuit synchronous with input voltage frequency increase trend in step E
Impedance percentage curve.
Preferably, in step F, to transformer primary side the frequency of input voltage is added by 20Hz extremely in signal input module
100Hz is linearly increasing；Then in step G, according to the impedance magnitude of the second short-circuit impedance percentage curve, to corresponding frequencies
Input voltage is weighted amendment, weighting coefficient and the first short-circuit impedance percentage curve impedance magnitude it is square directly proportional.
Preferably, data processing module obtains the third short circuit synchronous with input voltage frequency increase trend in step H
Impedance percentage curve.
Preferably, using the decision value and short-circuit impedance standard of third short-circuit impedance percentage curve in step I
Value compares, and obtains the result of deformation of transformer winding.
Brought beneficial effect is by adopting the above technical scheme: present invention improves over the measurements of existing short circuit impedance method
The method of deformation, by cycle calculations three times, transformer load variation is for calculating during can effectively lowering single calculation
The error of process influences.
Detailed description of the invention
Fig. 1 is the structure chart of a specific embodiment of the invention.
In figure: 1, signal input module；2, signal acquisition module；3, data processing module；4, signal correction module；5, it examines
Survey module.
Specific embodiment
The standardized element used in the present invention can commercially, and shaped piece is according to specification and attached drawing
Record can carry out customized, and the specific connection type of each part is all made of in the prior art mature bolt, rivet, weldering
The conventional means such as connect, paste, this will not be detailed here.
Referring to Fig.1, a specific embodiment of the invention includes,
A kind of detection method of the detection system of above-mentioned deformation of transformer winding, comprising the following steps:
A, Circuit Fault on Secondary Transformer is shorted, input voltage is added to transformer primary side in signal input module 1, measures transformation
The electric current of device secondary side, when the electric current of Circuit Fault on Secondary Transformer reaches rated current, signal acquisition module 2 is to transformer primary side
On voltage be acquired；
B, data processing module 3 uses the voltage and transformer primary side on the transformer primary side measured in step A
Voltage rating is compared, and obtains the first short-circuit impedance percentage；
C, Circuit Fault on Secondary Transformer is shorted, input voltage is added to transformer primary side in signal input module 1, measures transformation
The electric current of device primary side, when the electric current of transformer primary side reaches rated current, signal acquisition module 2 is to transformer primary side
On voltage be acquired；
D, the first short-circuit impedance percentage according to obtained in step B of signal correction module 4 is to the defeated of signal input module 1
Enter voltage to be modified；
E, data processing module 3 uses the voltage and transformer on the transformer primary side measured after step D amendment
The voltage rating of primary side is compared, and obtains the second short-circuit impedance percentage；
F, Circuit Fault on Secondary Transformer is shorted, input voltage is added to transformer primary side in signal input module 1, measures transformation
The electric current of device primary side, when the electric current of transformer primary side reaches rated current, signal acquisition module 2 is to transformer primary side
On voltage and Circuit Fault on Secondary Transformer on electric current be acquired；
G, the second short-circuit impedance percentage according to obtained in step E of signal correction module 4 is to the defeated of signal input module 1
Enter voltage to be modified；
H, the input voltage and transformer two for the transformer primary side that data processing module 3 is measured after being corrected using step G
Electric current on secondary side is compared, and obtains third short-circuit impedance percentage；
I, detection module 5 detects deformation of transformer winding using the short-circuit impedance percentage of transformer.
In step A, the frequency of input voltage is added by 20Hz to 100Hz line to transformer primary side in signal input module 1
Property increase.
In step B, data processing module 3 obtains the first short-circuit impedance percentage synchronous with input voltage frequency increase trend
Compare curve.
In step C, the frequency of input voltage is added by 20Hz to 100Hz line to transformer primary side in signal input module 1
Property increase；Then in step D, according to the impedance magnitude of the first short-circuit impedance percentage curve, to the input electricity of corresponding frequencies
Pressure is weighted amendment, and weighting coefficient is directly proportional to the impedance magnitude of the first short-circuit impedance percentage curve.
In step E, data processing module 3 obtains the second short-circuit impedance percentage synchronous with input voltage frequency increase trend
Compare curve.
In step F, the frequency of input voltage is added by 20Hz to 100Hz line to transformer primary side in signal input module 1
Property increase；Then in step G, according to the impedance magnitude of the second short-circuit impedance percentage curve, to the input electricity of corresponding frequencies
Pressure is weighted amendment, weighting coefficient and the first short-circuit impedance percentage curve impedance magnitude it is square directly proportional.
In step H, data processing module 3 obtains the third short-circuit impedance percentage synchronous with input voltage frequency increase trend
Compare curve.
In step I, carried out pair using the decision value and short-circuit impedance standard value of third short-circuit impedance percentage curve
Than obtaining the result of deformation of transformer winding.
In the description of the present invention, it is to be understood that, term " longitudinal direction ", " transverse direction ", "upper", "lower", "front", "rear",
The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is based on attached drawing institute
The orientation or positional relationship shown is merely for convenience of the description present invention, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (1)
1. a kind of detection method of the detection system of deformation of transformer winding, the detection system packet of the deformation of transformer winding
It includes,
Signal input module (1), for inputting detection signal to transformer primary side；
Signal acquisition module (2), is acquired for the response signal to transformer；
Data processing module (3) obtains corresponding short-circuit impedance percentage for carrying out calculation process to response signal；
Signal correction module (4), stores for the response signal to transformer, and according to known response signal to detection
Signal is modified；
Detection module (5) detects deformation of transformer winding using the short-circuit impedance percentage of transformer；
Characterized by the following steps:
A, Circuit Fault on Secondary Transformer is shorted, input voltage, measuring transformer is added to transformer primary side in signal input module (1)
The electric current of secondary side, when the electric current of Circuit Fault on Secondary Transformer reaches rated current, signal acquisition module (2) is to transformer primary side
On voltage be acquired；The frequency of input voltage is added by 20Hz to 100Hz to transformer primary side in signal input module (1)
It is linearly increasing；
B, data processing module (3) using on the transformer primary side measured in step A voltage and transformer primary side volume
Constant voltage is compared, and obtains the first short-circuit impedance percentage；Data processing module (3) obtains same with input voltage frequency increase trend
First short-circuit impedance percentage curve of step；
C, Circuit Fault on Secondary Transformer is shorted, input voltage, measuring transformer is added to transformer primary side in signal input module (1)
The electric current of primary side, when the electric current of transformer primary side reaches rated current, signal acquisition module (2) is to transformer primary side
On voltage be acquired；The frequency of input voltage is added by 20Hz to 100Hz to transformer primary side in signal input module (1)
It is linearly increasing；Then in step D, the input according to the impedance magnitude of the first short-circuit impedance percentage curve, to corresponding frequencies
Voltage is weighted amendment, and weighting coefficient is directly proportional to the impedance magnitude of the first short-circuit impedance percentage curve；
D, signal correction module (4) first short-circuit impedance percentage according to obtained in step B is to the defeated of signal input module (1)
Enter voltage to be modified；
E, data processing module (3) uses the voltage and transformer one on the transformer primary side measured after step D amendment
The voltage rating of secondary side is compared, and obtains the second short-circuit impedance percentage；Data processing module (3) obtains increasing with input voltage frequency
The the second short-circuit impedance percentage curve for adding trend synchronous；
F, Circuit Fault on Secondary Transformer is shorted, input voltage, measuring transformer is added to transformer primary side in signal input module (1)
The electric current of primary side, when the electric current of transformer primary side reaches rated current, signal acquisition module (2) is to transformer primary side
On voltage and Circuit Fault on Secondary Transformer on electric current be acquired；Signal input module (1) is added to transformer primary side and inputs
The frequency of voltage is linearly increasing by 20Hz to 100Hz；Then in step G, according to the resistance of the second short-circuit impedance percentage curve
Anti- size is weighted amendment, weighting coefficient and the first short-circuit impedance percentage curve impedance to the input voltage of corresponding frequencies
Size it is square directly proportional；
G, signal correction module (4) second short-circuit impedance percentage according to obtained in step E is to the defeated of signal input module (1)
Enter voltage to be modified；
H, the input voltage and transformer secondary for the transformer primary side that data processing module (3) is measured after being corrected using step G
Electric current on side is compared, and obtains third short-circuit impedance percentage；Data processing module (3) obtains becoming with input voltage frequency increase
The synchronous third short-circuit impedance percentage curve of gesture；
I, detection module (5) detects deformation of transformer winding using the short-circuit impedance percentage of transformer；It is short using third
The decision value of the anti-percentage curve of roadlock is compared with short-circuit impedance standard value, obtains the result of deformation of transformer winding.
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106767375B (en) * | 2016-11-29 | 2019-04-26 | 武汉振源电气股份有限公司 | Three-phase transformer winding deformation on-line monitoring method based on short circuit impedance method |
| CN111722152B (en) * | 2020-06-29 | 2023-04-28 | 成都工百利自动化设备有限公司 | Transformer winding deformation monitoring method and monitoring system |
| CN111856321A (en) * | 2020-07-09 | 2020-10-30 | 国网山东省电力公司淄博供电公司 | Three-phase transformer short-circuit parameter online monitoring method based on fundamental wave positive sequence component |
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| US4117463A (en) * | 1976-07-28 | 1978-09-26 | Westinghouse Brake & Signal Co. Ltd. | Circuit fault detection apparatus for railroad track circuit redundant connections |
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| CN103438797A (en) * | 2013-07-31 | 2013-12-11 | 广东电网公司汕头供电局 | Method and system for on-line detection of transformer winding deformation |
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| CN105091732A (en) * | 2015-08-13 | 2015-11-25 | 国家电网公司 | Method and system for detecting deformation of transformer winding |
| CN105180792A (en) * | 2015-07-01 | 2015-12-23 | 西安交通大学 | Transformer winding deformation quantitative diagnosis method based on model correction |
Family Cites Families (1)
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| US6956383B2 (en) * | 2003-11-13 | 2005-10-18 | International Business Machines Corporation | Method and apparatus for implementing automated electronic package transmission line characteristic impedance verification |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4117463A (en) * | 1976-07-28 | 1978-09-26 | Westinghouse Brake & Signal Co. Ltd. | Circuit fault detection apparatus for railroad track circuit redundant connections |
| JP3575814B2 (en) * | 1993-04-14 | 2004-10-13 | 中国電力株式会社 | Power system fault location system |
| CN103438797A (en) * | 2013-07-31 | 2013-12-11 | 广东电网公司汕头供电局 | Method and system for on-line detection of transformer winding deformation |
| CN105180792A (en) * | 2015-07-01 | 2015-12-23 | 西安交通大学 | Transformer winding deformation quantitative diagnosis method based on model correction |
| CN105004260A (en) * | 2015-07-02 | 2015-10-28 | 贵阳供电局 | Method for deformation test of transformer winding by utilization of frequency sweep short circuit impedance method |
| CN105091732A (en) * | 2015-08-13 | 2015-11-25 | 国家电网公司 | Method and system for detecting deformation of transformer winding |
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