CN113092269A - Pressure deformation testing method for liquid-immersed transformer - Google Patents
Pressure deformation testing method for liquid-immersed transformer Download PDFInfo
- Publication number
- CN113092269A CN113092269A CN202110356723.5A CN202110356723A CN113092269A CN 113092269 A CN113092269 A CN 113092269A CN 202110356723 A CN202110356723 A CN 202110356723A CN 113092269 A CN113092269 A CN 113092269A
- Authority
- CN
- China
- Prior art keywords
- liquid
- immersed transformer
- minimum value
- data
- deformation
- 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.)
- Granted
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 40
- 239000007788 liquid Substances 0.000 claims abstract description 38
- 238000012545 processing Methods 0.000 claims abstract description 36
- 238000005070 sampling Methods 0.000 claims abstract description 10
- 238000001514 detection method Methods 0.000 claims description 23
- 238000000034 method Methods 0.000 claims description 20
- 238000003491 array Methods 0.000 claims description 4
- 238000005259 measurement Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 6
- 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
- 238000007654 immersion Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000011326 mechanical measurement Methods 0.000 description 1
Images
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 pressure deformation testing method of a liquid-immersed transformer, which obtains the pressure deformation of the liquid-immersed transformer through a pressure deformation testing device of the liquid-immersed transformer, and comprises the following steps of S1: the processing module which is electrically connected with the stay wire sensor for detecting the pressure deformation of the liquid immersed transformer is initialized, the sampling frequency and the sampling time are set through the key unit of the processing module, and the processing module is used for newly building an array 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-immersed transformer. The data error caused by caliper measurement is avoided, and the working efficiency is improved.
Description
Technical Field
The invention belongs to the technical field of pressure deformation testing of liquid immersed transformers, and particularly relates to a pressure deformation testing method of a liquid immersed transformer.
Background
The standard GB/T6451-2015 technical parameters and requirements of oil-immersed power transformers stipulate that the oil tank pressure deformation test needs to be carried out on the oil-immersed power transformers. The pressure of the corrugated oil tank with the capacity of 315kVA or below is 25kPa, the pressure of the corrugated oil tank with the capacity of 400kVA or above is 20kPa, and the pressure is not damaged and the unallowable permanent deformation is not allowed after 5 min. The test needs to test the maximum deformation of the box cover and the box wall in the 5min pressure test process and the permanent deformation of the box cover and the box wall after the air pressure is removed.
The main methods of measurement today: mechanical measurement methods are used. And (4) fixing the vernier caliper on the mounting bracket, and measuring the distance between before and after the test to obtain the deformation. Because the deformation of the box cover and the box wall is dynamically changed in the pressure test process, the error of measuring the maximum deformation by adopting the method is larger.
Therefore, the above problems are further improved.
Disclosure of Invention
The invention mainly aims to provide a pressure deformation testing method for a liquid-immersed transformer. The data error caused by caliper measurement is avoided, and the working efficiency is improved.
In order to achieve the above object, the present invention provides a method for testing pressure deformation of a liquid-immersed transformer, wherein a pressure deformation of the liquid-immersed transformer is obtained by a pressure deformation testing device of the liquid-immersed transformer, comprising the following steps:
step S1: initializing a processing module electrically connected with a stay wire sensor for detecting pressure deformation of the liquid immersed transformer, setting sampling frequency and sampling time through a key unit of the processing module, and storing deformation data comprising an initial value, a minimum value and a final value through a newly-built array of the processing module;
step S2: starting a timer of the processing module and obtaining a first group of data for detecting the immersed transformer through a pull sensor;
step S3: judging whether the minimum value c of the next group of data obtained by the stay wire sensor when the value a [ t +1] is assigned is smaller than the current minimum value c in the first group of data or not within the time t smaller than the preset time;
step S4: the processing module outputs the permanent deformation and the final deformation of the liquid-immersed transformer, and outputs a relation curve of time and distance on the upper computer.
As a further preferable embodiment of the above technical means, 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-immersed transformer obtained by detection of the stay wire sensor;
step S1.3: defining c as the minimum value of the liquid immersed transformer obtained by the detection of the stay wire sensor;
step S1.4: and d is defined as the final value of the liquid immersed transformer obtained by the detection of the stay wire sensor.
As a further preferable embodiment of the above technical means, step S2 is specifically implemented as the following steps:
step S2.1: opening a timer, obtaining a data assignment a [ t ], and creating t as 1;
step S2.2: obtaining an initial value b of the detection liquid-immersed transformer through a pull sensor;
step S2.3: obtaining a current minimum value c of the detection liquid immersed transformer through a pull wire sensor (the minimum value when t is 1 represents the current and does not represent the final minimum value);
step S2.4: and simultaneously displaying the initial value b and the current minimum value c by a display unit of the processing module and an upper computer connected with the processing module.
As a further preferable embodiment of the above technical means, step S3 is specifically implemented as the following steps:
step S3.1: if the minimum value c of the next group of data assigned with a [ t +1] (distance) is smaller than the current minimum value c of the first group of data, c is made to be 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 assigned with a [ t +1] (distance);
step S3.2: if the minimum value c of the next group of data assigned with a [ t +1] (distance) is larger than the current minimum value c of 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 assigned with a [ t +1] (the minimum value at the moment or the minimum value of the first group of data is not replaced);
step S3.3: and repeatedly judging whether the minimum value c is the minimum value in all the detection data within a preset time (preferably t <300s), if so, replacing, and if not, keeping until the time t exceeds the preset time.
As a further preferable embodiment of the above technical means, step S4 is specifically implemented as the following steps:
step S4.1: when the time t exceeds the preset time, making d ═ a [ t +1 ];
step S4.2: outputting permanent deformation amount b-d;
step S4.3: outputting the final deformation amount b-c;
step S4.4: all detected arrays a [ t ] are output, and an array time and distance relation curve is output.
Drawings
Fig. 1 is a schematic structural diagram of a pressure deformation testing device for a liquid immersed transformer according to a second embodiment of the invention.
Fig. 2 is a circuit diagram of a main control unit of a device for testing pressure deformation of a liquid-immersed transformer according to a second embodiment of the present invention.
Fig. 3 is a circuit diagram of a sensor unit of a pressure deformation testing device of a liquid immersed transformer according to a second embodiment of the invention.
Fig. 4 is a circuit diagram of a serial unit of a device for testing pressure deformation of a liquid immersed transformer according to a second embodiment of the present invention.
Fig. 5 is a circuit diagram of a display unit of a device for testing pressure deformation of a liquid-immersed transformer according to a second embodiment of the present invention.
Fig. 6 is a circuit diagram of a key unit of a device for testing pressure deformation of a liquid-immersed transformer according to a second embodiment of the present invention.
Fig. 7 is a schematic flow chart of the method for testing the pressure deformation of the liquid-immersed transformer.
The reference numerals include: 1. a pull wire sensor; 2. an adjustable support; 3. an induction pad; 4. a magnet; 5. an electromagnet; 6. a base plate.
Detailed Description
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as 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.
With reference to figure 1 of the drawings,
in the preferred embodiment of the present invention, those skilled in the art should note that the liquid immersed transformer, upper computer, etc. related to the present invention can be regarded as the prior art.
A first embodiment.
The invention provides a pressure deformation testing method of a liquid immersed transformer, which obtains the pressure deformation of the liquid immersed transformer through a pressure deformation testing device of the liquid immersed transformer, and in the testing process, the pressure applying point (a pressure releasing valve) of the liquid immersed transformer is inflated to ensure that the box wall, the box cover and the like of the liquid immersed transformer are expanded and deformed so as to obtain the deformation of the gas pressure during the process and the deformation of the gas pressure after the process is finished, and comprises the following steps:
step S1: initializing a processing module electrically connected with a stay wire sensor for detecting pressure deformation of the liquid immersed transformer, setting sampling frequency and sampling time through a key unit of the processing module, and storing deformation data comprising an initial value, a minimum value and a final value through a newly-built array of the processing module;
step S2: starting a timer of the processing module and obtaining a first group of data for detecting the immersed transformer through a pull sensor;
step S3: judging whether the minimum value c of the next group of data obtained by the stay wire sensor when the value a [ t +1] is assigned is smaller than the current minimum value c in the first group of data or not within the time t smaller than the preset time;
step S4: the processing module outputs the permanent deformation and the final deformation of the liquid-immersed transformer, and outputs a relation curve of time and distance on the upper computer.
Specifically, step S1 is 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-immersed transformer obtained by detection of the stay wire sensor;
step S1.3: defining c as the minimum value of the liquid-immersed transformer obtained by the detection of the stay wire sensor (the distance from the sensing point of the stay wire sensor to the measuring point of the liquid-immersed transformer so as to obtain the maximum deformation of the air pressure);
step S1.4: and d is defined as the final value of the immersed transformer obtained by the detection of the stay wire sensor (the distance from the sensing point of the stay wire sensor to the measuring point of the immersed transformer so as to obtain the permanent deformation amount for removing the air pressure).
More specifically, step S2 is specifically implemented as the following steps:
step S2.1: opening a timer, obtaining a data assignment a [ t ], and creating t as 1;
step S2.2: obtaining an initial value b of the detection liquid-immersed transformer through a pull sensor;
step S2.3: obtaining a current minimum value c of the detection liquid immersed transformer through a pull wire sensor (the minimum value when t is 1 represents the current and does not represent the final minimum value);
step S2.4: and simultaneously displaying the initial value b and the current minimum value c by a display unit of the processing module and an upper computer connected with the processing module.
Further, step S3 is specifically implemented as the following steps:
step S3.1: if the minimum value c of the next group of data assigned with a [ t +1] (distance) is smaller than the current minimum value c of the first group of data, c is made to be 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 assigned with a [ t +1] (distance);
step S3.2: if the minimum value c of the next group of data assigned with a [ t +1] (distance) is larger than the current minimum value c of 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 assigned with a [ t +1] (the minimum value at the moment or the minimum value of the first group of data is not replaced);
step S3.3: and repeatedly judging whether the minimum value c is the minimum value in all the detection data within a preset time (preferably t <300s), if so, replacing, and if not, keeping until the time t exceeds the preset time.
Further, step S4 is implemented as the following steps:
step S4.1: when the time t exceeds the preset time, making d ═ a [ t +1 ];
step S4.2: outputting permanent deformation amount b-d;
step S4.3: outputting the final deformation amount b-c;
step S4.4: all detected arrays a [ t ] are output, and an array time and distance relation curve is output.
A second embodiment.
The invention provides a pressure deformation testing method of a liquid immersed transformer, which obtains the pressure deformation of the liquid immersed transformer through a pressure deformation testing device of the liquid immersed transformer, and in the testing process, the pressure applying point (a pressure releasing valve) of the liquid immersed transformer is inflated to ensure that the box wall, the box cover and the like of the liquid immersed transformer are expanded and deformed so as to obtain the deformation of the gas pressure during the process and the deformation of the gas pressure after the process is finished, and comprises the following steps:
step S1: initializing a processing module electrically connected with a stay wire sensor for detecting pressure deformation of the liquid immersed transformer, setting sampling frequency and sampling time through a key unit of the processing module, and storing deformation data comprising an initial value, a minimum value and a final value through a newly-built array of the processing module;
step S2: starting a timer of the processing module and obtaining a first group of data for detecting the immersed transformer through a pull sensor;
step S3: judging whether the minimum value c of the next group of data obtained by the stay wire sensor when the value a [ t +1] is assigned is smaller than the current minimum value c in the first group of data or not within the time t smaller than the preset time;
step S4: the processing module outputs the permanent deformation and the final deformation of the liquid-immersed transformer, and outputs a relation curve of time and distance on the upper computer.
Specifically, step S1 is 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-immersed transformer obtained by detection of the stay wire sensor;
step S1.3: defining c as the minimum value of the liquid-immersed transformer (the distance from the sensing point to the measuring point of the liquid-immersed transformer so as to obtain the maximum deformation of the air pressure) detected and obtained by the stay wire sensor;
step S1.4: and d is defined as the final value of the immersed transformer obtained by the detection of the stay wire sensor (the distance from the sensing point to the measuring point of the immersed transformer so as to obtain the permanent deformation amount of the removed air pressure).
More specifically, step S2 is specifically implemented as the following steps:
step S2.1: opening a timer, obtaining a data assignment a [ t ], and creating t as 1;
step S2.2: obtaining an initial value b of the detection liquid-immersed transformer through a pull sensor;
step S2.3: obtaining a current minimum value c of the detection liquid immersed transformer through a pull wire sensor (the minimum value when t is 1 represents the current and does not represent the final minimum value);
step S2.4: and simultaneously displaying the initial value b and the current minimum value c by a display unit of the processing module and an upper computer connected with the processing module.
Further, step S3 is specifically implemented as the following steps:
step S3.1: if the minimum value c of the next group of data assigned with a [ t +1] (distance) is smaller than the current minimum value c of the first group of data, c is made to be 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 assigned with a [ t +1] (distance);
step S3.2: if the minimum value c of the next group of data assigned with a [ t +1] (distance) is larger than the current minimum value c of 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 assigned with a [ t +1] (the minimum value at the moment or the minimum value of the first group of data is not replaced);
step S3.3: and repeatedly judging whether the minimum value c is the minimum value in all the detection data within a preset time (preferably t <300s), if so, replacing, and if not, keeping until the time t exceeds the preset time.
Further, step S4 is implemented as the following steps:
step S4.1: when the time t exceeds the preset time, making d ═ a [ t +1 ];
step S4.2: outputting permanent deformation amount b-d;
step S4.3: outputting the final deformation amount b-c;
step S4.4: all detected arrays a [ t ] are output, and an array time and distance relation curve is output.
The embodiment also discloses a pressure deformation testing device of the liquid immersed transformer, which is used for implementing the pressure deformation testing method of the liquid immersed transformer.
The utility model discloses a liquid soaks formula transformer pressure deformation testing arrangement for the pressure deformation volume of test liquid soaks formula transformer, including 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 placed above the bottom plate 5, the adjustable bracket 2 is positioned above the bottom plate 5, the adjustable bracket 2 is fixedly connected with the bottom plate 6 through the electromagnet 5, the stay wire sensor 1 is installed on the adjustable bracket 2, and an induction point 3 of the stay wire sensor 1 is connected with a magnet 4 installed on a measuring point of the liquid immersion type transformer;
the processing module is electrically connected with the stay wire sensor 1 and used for receiving a voltage signal (converted into a distance between two points through AD analog-to-digital conversion) output by the stay wire sensor 1 and is also connected with an upper computer, a distance-time curve in a test process is obtained by adopting a dynamic scanning method, so that the maximum deformation and the permanent deformation in a pressure applying process are obtained, the processing module comprises a main control unit (an STM32f103c8t6 is selected as a main control chip to be internally provided with a 12-bit high-speed AD for completing system control, data acquisition, data processing and data display), a serial port unit (the dynamic monitoring and the final result display of data are realized by connecting the serial port unit with the upper computer), a power supply unit, a sensor unit (the stay wire sensor WXY33 is connected to a 12-bit high-speed AD measuring channel of a single chip microcomputer) and a display unit (the display, for realizing dynamic monitoring of data and final result display), the serial port unit, the power supply 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 above-mentioned pull wire sensor), the output end of the sensor T3 is electrically connected to the 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 also connected to a power supply (3V3) through a resistor R10, and one end of the resistor R12, which is far away from the sensor T3, is also 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, the TXD of the switching chip T3 is electrically connected to the 12 pins of the master U1, and the RXD of the switching chip T3 is electrically connected to the 13 pins of the master U1.
Further, the display unit includes a display T1, a DO terminal of the display T1 is electrically connected to the 21 pin of the main controller U1, and a DI terminal of the display T1 is electrically connected to the 22 pin of the main controller U1.
Furthermore, the processing module further comprises a key unit (connected with the single chip microcomputer through a common GPIO to complete system start-stop control and parameter setting), the key unit comprises a switch S1 and a switch S2, one end of the switch S1 is electrically connected with the 11 pin of the main controller U1 through a resistor R6, a first path of one 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 one 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 pin 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 the technical features of the liquid immersed transformer, the upper computer, and the like related to the present patent application should be regarded as the prior art, and the specific structure, the operation principle, the control mode and the spatial arrangement mode of the technical features may be conventional choices in the field, and should not be regarded as the invention point of the present patent, and the present patent is not further specifically described in detail.
It will be apparent to those skilled in the art that modifications and equivalents may be made in the embodiments and/or portions thereof without departing from the spirit and scope of the present invention.
Claims (5)
1. A pressure deformation testing method of a liquid immersed transformer obtains the pressure deformation of the liquid immersed transformer through a pressure deformation testing device of the liquid immersed transformer, and is characterized by comprising the following steps:
step S1: initializing a processing module electrically connected with a stay wire sensor for detecting pressure deformation of the liquid immersed transformer, setting sampling frequency and sampling time through a key unit of the processing module, and storing deformation data comprising an initial value, a minimum value and a final value through a newly-built array of the processing module;
step S2: starting a timer of the processing module and obtaining a first group of data for detecting the immersed transformer through a pull sensor;
step S3: judging whether the minimum value c of the next group of data obtained by the stay wire sensor when the value a [ t +1] is assigned is smaller than the current minimum value c in the first group of data or not within the time t smaller than the preset time;
step S4: the processing module outputs the permanent deformation and the final deformation of the liquid-immersed transformer, and outputs a relation curve of time and distance on the upper computer.
2. The method for testing the pressure deformation of the liquid-immersed transformer according to claim 1, wherein the step S1 is implemented by the following steps:
step S1.1: storing data through the array a [ ];
step S1.2: defining b as an initial value of the liquid-immersed transformer obtained by detection of the stay wire sensor;
step S1.3: defining c as the minimum value of the liquid immersed transformer obtained by the detection of the stay wire sensor;
step S1.4: and d is defined as the final value of the liquid immersed transformer obtained by the detection of the stay wire sensor.
3. The method for testing the pressure deformation of the liquid-immersed transformer according to claim 2, wherein the step S2 is implemented by the following steps:
step S2.1: opening a timer, obtaining a data assignment a [ t ], and creating t as 1;
step S2.2: obtaining an initial value b of the detection liquid-immersed transformer through a pull sensor;
step S2.3: obtaining a current minimum value c of the detection liquid-immersed transformer through a pull sensor;
step S2.4: and simultaneously displaying the initial value b and the current minimum value c by 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 liquid-immersed transformer according to claim 3, wherein the step S3 is implemented by the following steps:
step S3.1: if the minimum value c when the next group of data is assigned with a [ t +1] is smaller than the current minimum value c in the first group of data, c is made to be a [ t +1], and the display unit and the upper computer simultaneously display the current time t and the minimum value c when the data is assigned with a [ t +1 ];
step S3.2: if the minimum value c of the next group of data assigned with a [ t +1] is larger than the current minimum value c of 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 assigned with a [ t +1 ];
step S3.3: and repeatedly judging whether the minimum value c is the minimum value in all the detection data within the preset time, if so, replacing, and if not, keeping until the time t exceeds the preset time.
5. The method for testing the pressure deformation of the liquid-immersed transformer according to claim 4, wherein the step S4 is implemented by the following steps:
step S4.1: when the time t exceeds the preset time, making d ═ a [ t +1 ];
step S4.2: outputting permanent deformation amount b-d;
step S4.3: outputting the final deformation amount b-c;
step S4.4: all detected arrays a [ t ] are output, and an array time and distance relation curve 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 true CN113092269A (en) | 2021-07-09 |
| CN113092269B 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) |
Cited By (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 |
| CN117007416A (en) * | 2023-09-21 | 2023-11-07 | 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 |
Cited By (3)
| 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 |
| CN117007416A (en) * | 2023-09-21 | 2023-11-07 | 常州市建筑材料研究所有限公司 | Safe cement pressure testing machine |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113092269B (en) | 2024-03-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113092269A (en) | Pressure deformation testing method for liquid-immersed transformer | |
| CN109617628B (en) | Multifunctional detection device and method for multi-meter-in-one acquisition equipment | |
| CN101533043A (en) | Test system for vehicle quiescent current | |
| CN107290399A (en) | Transformer moisture measurement device based on PDC/FDS dielectric response methods | |
| CN111025050A (en) | Current response time testing device and method for automobile electromagnetic valve | |
| CN214537766U (en) | Pressure deformation testing device for liquid-immersed transformer | |
| CN106598035B (en) | Automatic test approach, apparatus and system | |
| CN106443392B (en) | Optical fiber partial discharge test system and method under alternating current and direct current superposed voltage | |
| CN217561648U (en) | Testing device and system | |
| JP6752617B2 (en) | Coil test equipment | |
| CN116184078A (en) | Circuit, system and method for testing electric performance of filter | |
| CN212622939U (en) | Switch electric life detection device | |
| CN103033702B (en) | Multifunctional hand-held lightning arrester tester | |
| CN207181351U (en) | Transformer moisture measurement device based on PDC/FDS dielectric response methods | |
| US10393815B2 (en) | Voice counting of each battery under test | |
| CN110244033B (en) | Portable urine detection device and detection method thereof | |
| CN210181590U (en) | MCU parameter testing system | |
| CN116155143A (en) | Method and device for acquiring motor parameters | |
| CN210572560U (en) | Device for measuring capacitance and parallel resistance of single capacitor | |
| CN113671932A (en) | ECU offline testing device and method | |
| CN208172190U (en) | A kind of circuit-breaker switching on-off coil turn-to-turn insulation fault simulator | |
| CN211718461U (en) | Current response time testing device of automobile electromagnetic valve | |
| CN206740346U (en) | Contactless stiffness of structural member detection device | |
| CN201673210U (en) | High frequency dielectric loss measurement apparatus for enamelled wires | |
| CN207622682U (en) | A kind of check device of winding deformation tester |
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 |