CN112326035A - Method for storing working state data of internal equipment of high-voltage switch cabinet - Google Patents
Method for storing working state data of internal equipment of high-voltage switch cabinet Download PDFInfo
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- CN112326035A CN112326035A CN202011005218.8A CN202011005218A CN112326035A CN 112326035 A CN112326035 A CN 112326035A CN 202011005218 A CN202011005218 A CN 202011005218A CN 112326035 A CN112326035 A CN 112326035A
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000001514 detection method Methods 0.000 claims abstract description 24
- 239000011159 matrix material Substances 0.000 claims description 9
- 230000002159 abnormal effect Effects 0.000 claims description 6
- 238000009825 accumulation Methods 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000012937 correction Methods 0.000 claims description 3
- 230000001052 transient effect Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000007769 metal material Substances 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
- 238000012360 testing method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/0096—Radiation pyrometry, e.g. infrared or optical thermometry for measuring wires, electrical contacts or electronic systems
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J2005/0077—Imaging
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Radiation Pyrometers (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The invention discloses a method for storing working state data of internal equipment of a high-voltage switch cabinet, which comprises an infrared general data file storage format, infrared temperature detection, ultrasonic detection and earth electric wave detection, wherein the data is stored in a file in a binary mode, multi-byte data types in the file storage format are stored in a small-end mode, and level data are stored in a mode of accumulating excessive frames. According to the invention, firstly, common data of infrared temperature detection, ultrasonic waves and transient earth-electricity wave data are collected, so that the truth and accuracy of the detected data are realized, and the accurate recording and judgment of working states of equipment by workers are guaranteed.
Description
Technical Field
The invention relates to the technical field of a power grid power transmission and transformation equipment state monitoring system, in particular to a method for storing working state data of equipment in a high-voltage switch cabinet.
Background
The switch cabinet is an electrical device, the exterior line of the switch cabinet firstly enters a main control switch in the cabinet and then enters a branch control switch, each branch circuit is arranged according to the requirement, such as an instrument, an automatic control, a motor magnetic switch, various alternating current contactors and the like, some switch cabinets are also provided with a high-voltage chamber and a low-voltage chamber, high-voltage buses are arranged, such as a power plant and the like, some switch cabinets are also provided with low-frequency load shedding for protecting main equipment, and the switch cabinet is mainly used for opening, closing, controlling and protecting the electrical equipment in the process of power generation, power transmission, power distribution and electric energy conversion of an electric power system.
When the switch cabinet works, the internal temperature of the switch cabinet is high, the internal temperature of the switch cabinet needs to be detected intermittently, therefore, the working state of the internal equipment is analyzed to ensure the safe and effective operation of the internal electrical elements of the switch rail, the infrared chart data is the important basic data for analyzing the working state of the equipment, the standard format of the data file is specified in the power industry standard DL/T664-2016 electrified equipment infrared diagnosis application specification of the people's republic of China, however, the file format inherently stores the temperature information of the measured target, however, the temperature of the surface of the equipment cannot be reflected correctly and truly, and a subsequent user cannot achieve the purpose of determining the true temperature of the surface of the equipment according to the specific emissivity modification of the equipment, so that the ideal effect of monitoring the working state of the electrical equipment in the switch cabinet is difficult to achieve.
Disclosure of Invention
The invention aims to: the method for storing the working state data of the equipment in the high-voltage switch cabinet aims to solve the problems that although the existing method for storing the working state data of the equipment stores the temperature information of a measured target, the temperature of the surface of the equipment cannot be accurately and really reflected, and a subsequent user cannot achieve the purpose of determining the real temperature of the surface of the equipment according to the specific equipment emissivity modification.
In order to achieve the purpose, the invention adopts the following technical scheme: a method for storing working state data of internal equipment of a high-voltage switch cabinet comprises an infrared general data file storage format, infrared temperature detection, ultrasonic detection and earth electric wave detection, and the method for storing the working state data of the internal equipment of the high-voltage switch cabinet comprises the following steps:
s1, storing the image information in JPEG format in the infrared general data file storage format, then storing the information of time, version, manufacturer and the like collected by infrared thermal image in the additional data section of the JPEG file, and also storing the dot matrix data of the infrared temperature value;
s2, reading a level data matrix with width of Wi dth and height of He i right from the JPEG file additional data section;
s3, inputting the radiance of the surface of the tested device, the ambient temperature, the relative humidity, the measuring distance and other compensation parameters into a data file storage format, and performing necessary correction;
s4, recording data of the actual load current, the rated current, the operating voltage, the temperature of the detected object and the ambient temperature value of the detected equipment, and simultaneously recording a thermal image;
and S5, when the temperature distribution characteristic of the equipment is found to be abnormal, manually adjusting the temperature range and the level, and displaying the abnormal equipment or part in a highlighted way.
As a further description of the above technical solution:
the infrared temperature detection method comprises the following steps:
s1, selecting more than two different detection directions and angles in advance, determining and recording an optimal detection position;
s2, under the condition that the safety distance allows, the infrared instrument is preferably close to the tested device as much as possible, so that the tested device is filled with the view field of the whole instrument as much as possible;
s3, acquiring level data of infrared rays emitted by the target object;
and S4, displaying the temperature and the image on the instrument through a gray-temperature conversion algorithm based on the level data.
As a further description of the above technical solution:
the data is stored in a file in a binary mode, and multi-byte data types in a file storage format are stored in a small-end mode.
As a further description of the above technical solution:
and the level data is stored in an excessive frame accumulation mode.
As a further description of the above technical solution:
the values acquired by the level data matrix, the values detected by the ultrasonic waves and the values detected by the earth electric waves are all accumulated according to the position relationship according to the data frames of the 'data accumulation frame number' continuously acquired according to the 'frame interval time'.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. according to the invention, common data of the surface temperature, the ultrasonic wave and the transient earth electric wave data of the internal equipment of the switch cabinet are collected and stored, so that the truth and accuracy of the detected data are realized, and the accurate recording and judgment of the working state of the internal equipment of the switch cabinet by workers are ensured.
2. In the invention, the method of storing the working state of the equipment by adopting multi-frame accumulated data is adopted, so that the real reflection of the instrument on the working state of the equipment is improved.
3. In the invention, the purpose of modifying the surface temperature of the equipment afterwards is achieved by storing the original temperature level data.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the first embodiment, please refer to tables 1 and 2, the present invention provides a technical solution: a method for storing working state data of internal equipment of a high-voltage switch cabinet comprises an infrared general data file storage format, infrared temperature detection, ultrasonic detection and earth electric wave detection, and the method for storing the working state data of the internal equipment of the high-voltage switch cabinet comprises the following steps:
s1, storing the image information in JPEG format in the infrared general data file storage format, then storing the information of time, version, manufacturer and the like collected by infrared thermal image in the additional data section of the JPEG file, and also storing the dot matrix data of the infrared temperature value;
s2, reading a level data matrix with width of Wi dth and height of He i right from the JPEG file additional data section;
s3, inputting the radiance of the surface of the tested device, the ambient temperature, the relative humidity, the measuring distance and other compensation parameters into a data file storage format, and performing necessary correction;
s4, recording data of the actual load current, the rated current, the operating voltage, the temperature of the detected object and the ambient temperature value of the detected equipment, and simultaneously recording a thermal image;
and S5, when the temperature distribution characteristic of the equipment is found to be abnormal, manually adjusting the temperature range and the level, and displaying the abnormal equipment or part in a highlighted way.
The emissivity of the surface of the device under test can be selected correctly, and can be generally selected by referring to the following values: the silicon rubber (including RTV and HTV) can be 0.95, the electroceramics can be 0.92, and the oxidized metal wire and the metal connection can be 0.9. The radiance of more materials, different state surfaces can be selected with reference to appendix D. It should be noted that the false high temperature phenomenon caused by the reflection or refraction caused by the stainless steel material with too high surface finish, other metal materials and ceramics, the equipment of non-metal dielectric materials such as lightning arrester in the power equipment, the emissivity is about 0.90, and for devices using metal materials such as wires and isolating switches, generally, due to the existence of thermoplastic sleeve marks, dirty covering, high oxidation and other phenomena on the surface, the emissivity is also generally about 0.90, so the detection emissivity can be adjusted to 0.9, in the infrared thermal image processing analysis, the infrared thermal image data file is required to be capable of carrying out point-by-point temperature analysis, in subsequent analysis, parameters of the temperature measurement target, such as humidity, distance, ambient temperature, target emissivity and other information, need to be modified, and changes in these parameters all result in the same target exhibiting different temperatures.
In the second embodiment, the infrared temperature detection method comprises the following steps:
s1, selecting more than two different detection directions and angles in advance, determining and recording an optimal detection position;
s2, under the condition that the safety distance allows, the infrared instrument is preferably close to the tested device as much as possible, so that the tested device is filled with the view field of the whole instrument as much as possible;
s3, acquiring level data of infrared rays emitted by the target object;
and S4, displaying the temperature and the image on the instrument through a gray-temperature conversion algorithm based on the level data.
Under the condition that the safe distance allows, the infrared instrument is preferably close to the tested equipment as much as possible, so that the tested equipment (or a target) fills the view field of the whole instrument as much as possible, and if necessary, the long-focus lens is used, and the long-focus lens is selected for use in line detection according to the voltage level and the test distance.
In the third embodiment, as shown in table one, data is stored in a file in a binary manner, and multi-byte data types in a file storage format are stored in a small-end mode.
Specifically, as shown in table one, the level data is accumulated and stored in a way of accumulating multiple frames, and the value acquired by the level data matrix, the value detected by ultrasonic waves and the value detected by earth electric waves are all accumulated according to the position relationship of data frames continuously acquired according to the "data accumulation frame number" at the frame interval time.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Table 1: a JPEG file format definition table provided according to an embodiment of the present invention is shown;
table 2: a reference table illustrating emissivity of common materials provided according to embodiments of the invention
Claims (5)
1. A method for storing working state data of internal equipment of a high-voltage switch cabinet is characterized by comprising an infrared general data file storage format, infrared temperature detection, ultrasonic detection and earth electric wave detection, wherein the method for storing the working state data of the internal equipment of the high-voltage switch cabinet comprises the following steps:
s1, storing the image information in JPEG format in the infrared general data file storage format, then storing the information of time, version, manufacturer and the like collected by infrared thermal image in the additional data section of the JPEG file, and also storing the dot matrix data of the infrared temperature value;
s2, reading a level data matrix with Width and Height from the JPEG file additional data segment;
s3, inputting the radiance of the surface of the tested device, the ambient temperature, the relative humidity, the measuring distance and other compensation parameters into a data file storage format, and performing necessary correction;
s4, recording data of the actual load current, the rated current, the operating voltage, the temperature of the detected object and the ambient temperature value of the detected equipment, and simultaneously recording a thermal image;
and S5, when the temperature distribution characteristic of the equipment is found to be abnormal, manually adjusting the temperature range and the level, and displaying the abnormal equipment or part in a highlighted way.
2. The method for storing the working state data of the internal equipment of the high-voltage switch cabinet according to claim 1, wherein the infrared temperature detection method comprises the following steps:
s1, selecting more than two different detection directions and angles in advance, determining and recording an optimal detection position;
s2, under the condition that the safety distance allows, the infrared instrument is preferably close to the tested device as much as possible, so that the tested device is filled with the view field of the whole instrument as much as possible;
s3, acquiring level data of infrared rays emitted by the target object;
and S4, displaying the temperature and the image on the instrument through a gray-temperature conversion algorithm based on the level data.
3. The method for storing the operating state data of the internal equipment of the high-voltage switch cabinet according to claim 1, wherein the data is stored in a file in a binary mode, and multi-byte data types in a file storage format are stored in a small-end mode.
4. The method for storing the operating state data of the internal equipment of the high-voltage switch cabinet as claimed in claim 1, wherein the level data is stored in an excessive frame accumulation manner.
5. The method for storing the operating status data of the internal equipment of the high voltage switch cabinet as claimed in claim 1, wherein the values collected by the level data matrix, the values detected by the ultrasonic waves and the values detected by the earth electric waves are accumulated according to the position relationship by continuously collecting the data frames of the data accumulation frame number according to the frame interval time.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011005218.8A CN112326035A (en) | 2020-09-22 | 2020-09-22 | Method for storing working state data of internal equipment of high-voltage switch cabinet |
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| CN202011005218.8A CN112326035A (en) | 2020-09-22 | 2020-09-22 | Method for storing working state data of internal equipment of high-voltage switch cabinet |
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| CN103197210A (en) * | 2013-03-28 | 2013-07-10 | 国家电网公司 | Integrated sensor used for partial discharge detection of switch cabinet |
| CN104280133A (en) * | 2013-05-09 | 2015-01-14 | 杭州美盛红外光电技术有限公司 | Thermal image analyzing and monitoring device, monitoring system and thermal image analyzing and monitoring method |
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