CN113092269B - Pressure deformation testing method for liquid immersion type transformer - Google Patents
Pressure deformation testing method for liquid immersion type transformer Download PDFInfo
- Publication number
- CN113092269B CN113092269B CN202110356723.5A CN202110356723A CN113092269B CN 113092269 B CN113092269 B CN 113092269B CN 202110356723 A CN202110356723 A CN 202110356723A CN 113092269 B CN113092269 B CN 113092269B
- Authority
- CN
- China
- Prior art keywords
- minimum value
- deformation
- data
- processing module
- immersed transformer
- 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
- 239000007788 liquid Substances 0.000 title claims abstract description 65
- 238000012360 testing method Methods 0.000 title claims abstract description 39
- 238000007654 immersion Methods 0.000 title claims abstract description 36
- 238000012545 processing Methods 0.000 claims abstract description 39
- 238000000034 method Methods 0.000 claims abstract description 24
- 238000005070 sampling Methods 0.000 claims abstract description 10
- 238000001514 detection method Methods 0.000 claims description 26
- 238000003491 array Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 6
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000005491 wire drawing Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000011326 mechanical measurement Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/06—Special adaptations of indicating or recording means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0044—Pneumatic means
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a method for testing pressure deformation of a liquid-immersed transformer, which comprises the following steps of S1: initializing a processing module electrically connected with a stay wire sensor for detecting the pressure deformation of the liquid immersed transformer, setting sampling frequency and sampling time through a key unit of the processing module, and carrying out new creation of an array through the processing module to store deformation data comprising an initial value, a minimum value and a final value. The invention discloses a pressure deformation testing method of a liquid immersion type transformer, wherein a processing module and a sensor can be used for directly obtaining permanent deformation and maximum deformation, and a dynamic scanning method is adopted to obtain a distance-time curve of a test process, so that dynamic deformation can be obtained. The data error caused by measuring with a caliper is avoided, and the working efficiency is improved.
Description
Technical Field
The invention belongs to the technical field of pressure deformation testing of liquid immersion type transformers, and particularly relates to a pressure deformation testing method of a liquid immersion type transformer.
Background
Standard GB/T6451-2015 technical parameters and requirements for oil immersed power transformers specifies that the oil tank pressure deformation test is required for the liquid immersed power transformer. The corrugated oil tank with the capacity of 315kVA and below needs to bear 25kPa pressure, the corrugated oil tank with the capacity of 400kVA and above needs to bear 20kPa pressure, and no damage and no impermissible permanent deformation should occur within 5 minutes. The test requires testing the maximum deformation of the case cover and the case wall in the pressing test process for 5 minutes, and the permanent deformation of the case cover and the case wall after the air pressure is removed.
The main method for measurement is as follows: a mechanical measurement method is used. And fixing the vernier caliper on the mounting bracket, and measuring the distance between the vernier caliper and the mounting bracket before and after the test to obtain the deformation. The deformation of the box cover and the box wall is dynamically changed in the pressing test process, so that the error of measuring the maximum deformation by the method is larger.
Accordingly, the above problems are further improved.
Disclosure of Invention
The invention mainly aims to provide a pressure deformation testing method for a liquid immersion transformer, wherein a processing module and a sensor can be used for directly obtaining permanent deformation and maximum deformation, and a dynamic scanning method is adopted for obtaining a distance-time curve of a test process, so that dynamic deformation can be obtained. The data error caused by measuring with a caliper is avoided, and the working efficiency is improved.
In order to achieve the above purpose, the invention provides a method for testing the pressure deformation of a liquid-immersed transformer, which comprises the following steps of:
step S1: initializing a processing module electrically connected with a stay wire sensor for detecting the pressure deformation of the liquid immersed transformer, setting sampling frequency and sampling time through a key unit of the processing module, and carrying out new creation of an array through the processing module to store deformation data comprising an initial value, a minimum value and a final value;
step S2: opening a timer of the processing module and obtaining a first set of data of the detection liquid immersion transformer through the pull wire sensor;
step S3: judging whether the minimum value c of the next group of data obtained by the stay wire sensor when the time t is smaller than the preset time is smaller than the current minimum value c in the first group of data;
step S4: the processing module outputs the permanent deformation and the final deformation of the liquid immersion transformer and outputs a time-distance relation curve at the host computer.
As a further preferable embodiment of the above embodiment, step S1 is specifically implemented as the following steps:
step S1.1: storing data through the array a [ ];
step S1.2: defining b as an initial value of the liquid immersion type transformer obtained by the detection of the pull wire sensor;
step S1.3: defining c as the minimum value of the liquid immersed transformer obtained by the detection of the pull wire sensor;
step S1.4: definition d is the final value of the liquid immersed transformer obtained by the detection of the pull wire sensor.
As a further preferable technical solution of the above technical solution, step S2 is specifically implemented as the following steps:
step S2.1: opening a timer, obtaining a data assignment a [ t ], and creating t=1;
step S2.2: obtaining an initial value b of the detection liquid immersed transformer through a pull wire sensor;
step S2.3: obtaining a current minimum value c (the minimum value when t=1 represents the current and does not represent the final minimum value) of the detection liquid immersed transformer through the pull wire sensor;
step S2.4: the initial value b and the current minimum value c are simultaneously displayed through a display unit of the processing module and an upper computer connected with the processing module.
As a further preferable technical solution of the above technical solution, step S3 is specifically implemented as the following steps:
step S3.1: let c=a [ t+1] if the minimum value c at the next set of data assignments a [ t+1] (distance) is smaller than the current minimum value c in the first set of data, and the display unit and the upper computer simultaneously display the current time t and the minimum value c at the data assignments a [ t+1] (distance);
step S3.2: if the minimum value c of the next group of data with the value of a [ t+1] (distance) is larger than the current minimum value c in the first group of data, the display unit and the upper computer simultaneously display the current time t and the minimum value c of the data with the value of a [ t+1] (distance) (the minimum value at this time is also the minimum value of the first group of data and is not replaced);
step S3.3: and repeatedly judging whether the minimum value c is the minimum value in all detection data or not within a preset time (preferably t <300 s), if so, replacing, otherwise, reserving until the time t exceeds the preset time.
As a further preferable technical solution of the above technical solution, step S4 is specifically implemented as the following steps:
step S4.1: when the time t exceeds the preset time, d=a [ t+1];
step S4.2: output permanent set = b-d;
step S4.3: output final deformation = b-c;
step S4.4: all detected arrays a [ t ] are output, and an array time versus distance relationship is output.
Drawings
Fig. 1 is a schematic structural diagram of a pressure deformation testing apparatus for a liquid immersion type transformer according to a second embodiment of the present invention.
Fig. 2 is a circuit diagram of a main control unit of a hydraulic transformer pressure deformation testing device according to a second embodiment of the present invention.
Fig. 3 is a circuit diagram of a sensor unit of a liquid immersion type transformer pressure deformation testing apparatus according to a second embodiment of the present invention.
Fig. 4 is a circuit diagram of a serial port unit of a hydraulic transformer pressure deformation testing apparatus according to a second embodiment of the present invention.
Fig. 5 is a circuit diagram of a display unit of a liquid immersion type transformer pressure deformation testing apparatus according to a second embodiment of the present invention.
Fig. 6 is a circuit diagram of a key unit of a pressure deformation testing apparatus for a liquid immersion type transformer according to a second embodiment of the present invention.
Fig. 7 is a flow chart of the method for testing the pressure deformation of the liquid immersion type transformer.
The reference numerals include: 1. a pull wire sensor; 2. an adjustable bracket; 3. an inductive pad; 4. a magnet; 5. an electromagnet; 6. a bottom plate.
Detailed Description
The following description is presented to enable one of ordinary skill in the art to make and use the invention. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art. The basic principles of the invention defined in the following description may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention.
Referring to figure 1 of the drawings,
in a preferred embodiment of the present invention, it should be noted by those skilled in the art that the liquid immersion type transformer, the upper computer, etc. to which the present invention relates may be regarded as the prior art.
First embodiment.
The invention provides a pressure deformation testing method of a liquid immersed transformer, which is characterized in that a pressure deformation testing device of the liquid immersed transformer is used for obtaining the pressure deformation of the liquid immersed transformer, and in the testing process, a pressure applying point (a pressure release valve) of the liquid immersed transformer is inflated to make the tank wall, the tank cover and the like of the liquid immersed transformer expand and deform so as to obtain the deformation of air pressure at the moment and the deformation of removing the air pressure after the air pressure is ended, and the method comprises the following steps:
step S1: initializing a processing module electrically connected with a stay wire sensor for detecting the pressure deformation of the liquid immersed transformer, setting sampling frequency and sampling time through a key unit of the processing module, and carrying out new creation of an array through the processing module to store deformation data comprising an initial value, a minimum value and a final value;
step S2: opening a timer of the processing module and obtaining a first set of data of the detection liquid immersion transformer through the pull wire sensor;
step S3: judging whether the minimum value c of the next group of data obtained by the stay wire sensor when the time t is smaller than the preset time is smaller than the current minimum value c in the first group of data;
step S4: the processing module outputs the permanent deformation and the final deformation of the liquid immersion transformer and outputs a time-distance relation curve at the host computer.
Specifically, the step S1 is specifically implemented as the following steps:
step S1.1: storing data through the array a [ ];
step S1.2: defining b as an initial value of the liquid immersion type transformer obtained by the detection of the pull wire sensor;
step S1.3: defining c as the minimum value of the liquid immersion type transformer obtained by the detection of the wire drawing sensor (the distance from the sensing point of the wire drawing sensor to the measuring point of the liquid immersion type transformer so as to obtain the maximum deformation of the air pressure during the air pressure);
step S1.4: d is defined as the final value of the liquid immersion transformer obtained by the detection of the pull wire sensor (the distance from the sensing point of the pull wire sensor to the measuring point of the liquid immersion transformer to obtain the permanent deformation amount of the removed air pressure).
More specifically, step S2 is implemented as the following steps:
step S2.1: opening a timer, obtaining a data assignment a [ t ], and creating t=1;
step S2.2: obtaining an initial value b of the detection liquid immersed transformer through a pull wire sensor;
step S2.3: obtaining a current minimum value c (the minimum value when t=1 represents the current and does not represent the final minimum value) of the detection liquid immersed transformer through the pull wire sensor;
step S2.4: the initial value b and the current minimum value c are simultaneously displayed through a display unit of the processing module and an upper computer connected with the processing module.
Further, the step S3 is specifically implemented as the following steps:
step S3.1: let c=a [ t+1] if the minimum value c at the next set of data assignments a [ t+1] (distance) is smaller than the current minimum value c in the first set of data, and the display unit and the upper computer simultaneously display the current time t and the minimum value c at the data assignments a [ t+1] (distance);
step S3.2: if the minimum value c of the next group of data with the value of a [ t+1] (distance) is larger than the current minimum value c in the first group of data, the display unit and the upper computer simultaneously display the current time t and the minimum value c of the data with the value of a [ t+1] (distance) (the minimum value at this time is also the minimum value of the first group of data and is not replaced);
step S3.3: and repeatedly judging whether the minimum value c is the minimum value in all detection data or not within a preset time (preferably t <300 s), if so, replacing, otherwise, reserving until the time t exceeds the preset time.
Further, the step S4 is specifically implemented as the following steps:
step S4.1: when the time t exceeds the preset time, d=a [ t+1];
step S4.2: output permanent set = b-d;
step S4.3: output final deformation = b-c;
step S4.4: all detected arrays a [ t ] are output, and an array time versus distance relationship is output.
Second embodiment.
The invention provides a pressure deformation testing method of a liquid immersed transformer, which is characterized in that a pressure deformation testing device of the liquid immersed transformer is used for obtaining the pressure deformation of the liquid immersed transformer, and in the testing process, a pressure applying point (a pressure release valve) of the liquid immersed transformer is inflated to make the tank wall, the tank cover and the like of the liquid immersed transformer expand and deform so as to obtain the deformation of air pressure at the moment and the deformation of removing the air pressure after the air pressure is ended, and the method comprises the following steps:
step S1: initializing a processing module electrically connected with a stay wire sensor for detecting the pressure deformation of the liquid immersed transformer, setting sampling frequency and sampling time through a key unit of the processing module, and carrying out new creation of an array through the processing module to store deformation data comprising an initial value, a minimum value and a final value;
step S2: opening a timer of the processing module and obtaining a first set of data of the detection liquid immersion transformer through the pull wire sensor;
step S3: judging whether the minimum value c of the next group of data obtained by the stay wire sensor when the time t is smaller than the preset time is smaller than the current minimum value c in the first group of data;
step S4: the processing module outputs the permanent deformation and the final deformation of the liquid immersion transformer and outputs a time-distance relation curve at the host computer.
Specifically, the step S1 is specifically implemented as the following steps:
step S1.1: storing data through the array a [ ];
step S1.2: defining b as an initial value of the liquid immersion type transformer obtained by the detection of the pull wire sensor;
step S1.3: definition c is that the minimum value (the distance from the sensing point to the measuring point of the liquid immersion transformer) of the liquid immersion transformer is detected and obtained by the pull wire sensor so as to obtain the maximum deformation of the air pressure at the time;
step S1.4: definition d is that the final value of the liquid immersion type transformer (the distance from the sensing point to the measuring point of the liquid immersion type transformer) is detected by the pull wire sensor to obtain the permanent deformation amount of the removed air pressure.
More specifically, step S2 is implemented as the following steps:
step S2.1: opening a timer, obtaining a data assignment a [ t ], and creating t=1;
step S2.2: obtaining an initial value b of the detection liquid immersed transformer through a pull wire sensor;
step S2.3: obtaining a current minimum value c (the minimum value when t=1 represents the current and does not represent the final minimum value) of the detection liquid immersed transformer through the pull wire sensor;
step S2.4: the initial value b and the current minimum value c are simultaneously displayed through a display unit of the processing module and an upper computer connected with the processing module.
Further, the step S3 is specifically implemented as the following steps:
step S3.1: let c=a [ t+1] if the minimum value c at the next set of data assignments a [ t+1] (distance) is smaller than the current minimum value c in the first set of data, and the display unit and the upper computer simultaneously display the current time t and the minimum value c at the data assignments a [ t+1] (distance);
step S3.2: if the minimum value c of the next group of data with the value of a [ t+1] (distance) is larger than the current minimum value c in the first group of data, the display unit and the upper computer simultaneously display the current time t and the minimum value c of the data with the value of a [ t+1] (distance) (the minimum value at this time is also the minimum value of the first group of data and is not replaced);
step S3.3: and repeatedly judging whether the minimum value c is the minimum value in all detection data or not within a preset time (preferably t <300 s), if so, replacing, otherwise, reserving until the time t exceeds the preset time.
Further, the step S4 is specifically implemented as the following steps:
step S4.1: when the time t exceeds the preset time, d=a [ t+1];
step S4.2: output permanent set = b-d;
step S4.3: output final deformation = b-c;
step S4.4: all detected arrays a [ t ] are output, and an array time versus distance relationship is output.
The embodiment also discloses a device for testing the pressure deformation of the liquid-immersed transformer, which is used for implementing the method for testing the pressure deformation of the liquid-immersed transformer.
The utility model discloses a liquid immersion transformer pressure deformation testing arrangement for the pressure deformation volume of test liquid immersion transformer, including acting as go-between sensor 1, adjustable support 2, magnet 4, electro-magnet 5, bottom plate 6 and processing module (not shown), wherein:
the liquid immersion type transformer is arranged above the bottom plate 5, the adjustable bracket 2 is arranged above the bottom plate 5 and is fixedly connected with the bottom plate 6 through the electromagnet 5, the stay wire sensor 1 is arranged on the adjustable bracket 2, and the sensing point 3 of the stay wire sensor 1 is connected with the magnet 4 arranged on the measuring point of the liquid immersion type transformer;
the processing module is electrically connected with the pull wire sensor 1, and is used for receiving a voltage signal output by the pull wire sensor 1 (the voltage signal is converted into a distance between two points through AD analog-to-digital conversion; the processing module is also connected with an upper computer, a distance-time curve of a test process is obtained by adopting a dynamic scanning method, thus the maximum deformation and the permanent deformation in a pressing process are obtained), the processing module comprises a main control unit (STM 32f103c8t6 is selected as a main control chip and is internally provided with 12-bit high-speed AD and is responsible for completing system control, data acquisition, data processing and data display), a serial port unit (the serial port unit is connected with the upper computer to realize dynamic monitoring and final result display of data), a power supply unit, a sensor unit (a pull wire sensor WXY33 is used and is connected with a 12-bit high-speed AD measuring channel of the single chip microcomputer) and a display unit (the display is connected with the single chip microcomputer to realize dynamic monitoring and final result display of data), and the serial port unit, the sensor unit and the display unit are respectively electrically connected with the main control unit.
Specifically, the sensor unit includes a sensor T3 (i.e., the pull-wire sensor described above), an output end of the sensor T3 is electrically connected with an 18 pin of the main controller U1 of the main control unit through a resistor R12, one end of the resistor R12, which is far away from the sensor T3, is further connected with a power supply (3V 3) through a resistor R10, and one end of the resistor R12, which is far away from the sensor T3, is further grounded through a resistor R11.
More specifically, the serial port unit includes a switching chip T2 and a connector U3, the switching chip T3 is electrically connected to the connector U3, a TXD end of the switching chip T3 is electrically connected to a 12 pin of the master controller U1, and a RXD end of the switching chip T3 is electrically connected to a 13 pin of the master controller U1.
Further, the display unit includes a display T1, the DO end of the display T1 is electrically connected to the 21 pin of the main controller U1, and the DI end of the display T1 is electrically connected to the 22 pin of the main controller U1.
Still further, the processing module further includes a key unit (connected to the single chip microcomputer through a general GPIO to complete system start-stop control and parameter setting), the key unit includes a switch S1 and a switch S2, one end of the switch S1 is electrically connected to the 11 pin of the master controller U1 through a resistor R6, a first path of the end of the switch S1, which is far away from the resistor R6, is grounded through a capacitor C5 and a resistor R7 in sequence, and a second path of the end of the switch S1, which is far away from the resistor R6, is grounded;
one end of the switch S2 is electrically connected with the 14 pins of the main controller U1 through a resistor R8, a first path of one end of the switch S2, which is far away from the resistor R8, is grounded through a capacitor C8 and a resistor R9 in sequence, and a second path of one end of the switch S2, which is far away from the resistor R8, is grounded.
It should be noted that technical features such as a liquid immersed transformer and an upper computer related to the present invention application should be regarded as the prior art, and specific structures, working principles, and control modes and spatial arrangement modes possibly related to the technical features should be selected conventionally in the art, and should not be regarded as the invention point of the present invention patent, which is not further specifically expanded and detailed.
Modifications of the embodiments described above, or equivalents of some of the features may be made by those skilled in the art, and any modifications, equivalents, improvements or etc. within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (5)
1. The pressure deformation testing method for the liquid-immersed transformer is characterized by comprising the following steps of:
step S1: initializing a processing module electrically connected with a stay wire sensor for detecting the pressure deformation of the liquid immersed transformer, setting sampling frequency and sampling time through a key unit of the processing module, and carrying out new creation of an array through the processing module to store deformation data comprising an initial value, a minimum value and a final value;
step S2: opening a timer of the processing module and obtaining a first set of data of the detection liquid immersion transformer through the pull wire sensor;
step S3: judging whether the minimum value c of the next group of data obtained by the stay wire sensor when the time t is smaller than the preset time is smaller than the current minimum value c in the first group of data;
step S4: the processing module outputs the permanent deformation and the final deformation of the liquid immersion transformer and outputs a time-distance relation curve at the host computer.
2. The method for testing the pressure deformation of the immersed transformer according to claim 1, wherein the step S1 is specifically implemented as the following steps:
step S1.1: storing data through the array a [ ];
step S1.2: defining b as an initial value of the liquid immersion type transformer obtained by the detection of the pull wire sensor;
step S1.3: defining c as the minimum value of the liquid immersed transformer obtained by the detection of the pull wire sensor;
step S1.4: definition d is the final value of the liquid immersed transformer obtained by the detection of the pull wire sensor.
3. The method for testing the pressure deformation of the immersed transformer according to claim 2, wherein the step S2 is specifically implemented as the following steps:
step S2.1: opening a timer, obtaining a data assignment a [ t ], and creating t=1;
step S2.2: obtaining an initial value b of the detection liquid immersed transformer through a pull wire sensor;
step S2.3: obtaining a current minimum value c of the detection liquid immersed transformer through a pull wire sensor;
step S2.4: the initial value b and the current minimum value c are simultaneously displayed through a display unit of the processing module and an upper computer connected with the processing module.
4. The method for testing the pressure deformation of the immersed transformer according to claim 3, wherein the step S3 is specifically implemented as the following steps:
step S3.1: if the minimum value c of the next group of data assignment a [ t+1] is smaller than the current minimum value c in the first group of data, c=a [ t+1] and the display unit and the upper computer simultaneously display the current time t and the minimum value c of the data assignment a [ t+1];
step S3.2: if the minimum value c of the next group of data assignment a [ t+1] is larger than the current minimum value c in the first group of data, the display unit and the upper computer simultaneously display the current time t and the minimum value c of the data assignment a [ t+1];
step S3.3: and repeatedly judging whether the minimum value c is the minimum value in all detection data in the preset time, if so, replacing, otherwise, reserving until the time t exceeds the preset time.
5. The method for testing the pressure deformation of the immersed transformer according to claim 4, wherein the step S4 is implemented as the following steps:
step S4.1: when the time t exceeds the preset time, d=a [ t+1];
step S4.2: output permanent set = b-d;
step S4.3: output final deformation = b-c;
step S4.4: all detected arrays a [ t ] are output, and an array time versus distance relationship is output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110356723.5A CN113092269B (en) | 2021-04-01 | 2021-04-01 | Pressure deformation testing method for liquid immersion type transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110356723.5A CN113092269B (en) | 2021-04-01 | 2021-04-01 | Pressure deformation testing method for liquid immersion type transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113092269A CN113092269A (en) | 2021-07-09 |
| CN113092269B true CN113092269B (en) | 2024-03-12 |
Family
ID=76672670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110356723.5A Active CN113092269B (en) | 2021-04-01 | 2021-04-01 | Pressure deformation testing method for liquid immersion type transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113092269B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114879092A (en) * | 2022-06-13 | 2022-08-09 | 青岛仪迪电子有限公司 | Comprehensive automatic test system for multi-path secondary power transformer |
| CN117007416B (en) * | 2023-09-21 | 2023-12-08 | 常州市建筑材料研究所有限公司 | Safe cement pressure testing machine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110032909A (en) * | 2009-09-24 | 2011-03-30 | 하나에버텍 주식회사 | Pressure measuring instrument test system |
| CN102985251A (en) * | 2010-05-25 | 2013-03-20 | 法比奥·泼尼股份公司 | Embossing unit and embossing method |
| CN105526835A (en) * | 2015-10-08 | 2016-04-27 | 华北电力大学 | Simulated test platform for radial winding deformation of transformer |
| CN110108249A (en) * | 2019-05-27 | 2019-08-09 | 国网河南省电力公司电力科学研究院 | It is a kind of for measuring transformer outer profile position and the measuring tool and measurement method of deformation |
| CN111981998A (en) * | 2020-07-22 | 2020-11-24 | 山东电力设备有限公司 | Transformer oil tank deformation measuring assembly, measuring system and measuring method |
| CN214537766U (en) * | 2021-04-01 | 2021-10-29 | 浙江方圆电气设备检测有限公司 | Pressure deformation testing device for liquid-immersed transformer |
-
2021
- 2021-04-01 CN CN202110356723.5A patent/CN113092269B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110032909A (en) * | 2009-09-24 | 2011-03-30 | 하나에버텍 주식회사 | Pressure measuring instrument test system |
| CN102985251A (en) * | 2010-05-25 | 2013-03-20 | 法比奥·泼尼股份公司 | Embossing unit and embossing method |
| CN105526835A (en) * | 2015-10-08 | 2016-04-27 | 华北电力大学 | Simulated test platform for radial winding deformation of transformer |
| CN110108249A (en) * | 2019-05-27 | 2019-08-09 | 国网河南省电力公司电力科学研究院 | It is a kind of for measuring transformer outer profile position and the measuring tool and measurement method of deformation |
| CN111981998A (en) * | 2020-07-22 | 2020-11-24 | 山东电力设备有限公司 | Transformer oil tank deformation measuring assembly, measuring system and measuring method |
| CN214537766U (en) * | 2021-04-01 | 2021-10-29 | 浙江方圆电气设备检测有限公司 | Pressure deformation testing device for liquid-immersed transformer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113092269A (en) | 2021-07-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113092269B (en) | Pressure deformation testing method for liquid immersion type transformer | |
| CN111669202B (en) | Power consumption testing device and method for communication module | |
| CN106771972A (en) | A kind of automatic testing equipment, the system and method for POS mainboard | |
| CN101162178A (en) | Plug-pull testing device and method | |
| CN201237620Y (en) | High-tension dielectric loss test device | |
| CN107290399A (en) | Transformer moisture measurement device based on PDC/FDS dielectric response methods | |
| CN214537766U (en) | Pressure deformation testing device for liquid-immersed transformer | |
| CN213275905U (en) | Power supply test system | |
| CN110109043A (en) | Electric energy meter detection method, detection terminal and computer readable storage medium | |
| CN213301527U (en) | Pipeline stress detection device | |
| CN111024290A (en) | Tension sensor for measuring tension of connecting belt | |
| CN114121137B (en) | Nand Flash particle power consumption testing system and method | |
| CN217561648U (en) | Testing device and system | |
| CN106840914B (en) | Monofilament bending performance testing device and method | |
| CN116184078A (en) | Circuit, system and method for testing electric performance of filter | |
| CN210181590U (en) | MCU parameter testing system | |
| CN213337920U (en) | Portable relay detection device | |
| CN102023263A (en) | Detection system of piezoelectric material | |
| CN212622939U (en) | Switch electric life detection device | |
| CN210603370U (en) | Power equipment thing networking temperature and humidity sensor check-up clamping device | |
| CN110244033B (en) | Portable urine detection device and detection method thereof | |
| CN116155143A (en) | Method and device for acquiring motor parameters | |
| CN109738140B (en) | Nuclear fuel assembly grillwork strip rigidity detection measuring head and use method thereof | |
| CN2171871Y (en) | Parameter test instrument of contacter | |
| CN101738534A (en) | Voltage test device and voltage test method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |