CN114496569A - Reactive compensation capacitor with gas detection function - Google Patents
Reactive compensation capacitor with gas detection function Download PDFInfo
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- CN114496569A CN114496569A CN202111609738.4A CN202111609738A CN114496569A CN 114496569 A CN114496569 A CN 114496569A CN 202111609738 A CN202111609738 A CN 202111609738A CN 114496569 A CN114496569 A CN 114496569A
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- 239000003990 capacitor Substances 0.000 title claims abstract description 82
- 238000001514 detection method Methods 0.000 title claims abstract description 20
- 239000007789 gas Substances 0.000 claims abstract description 69
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 41
- 239000002041 carbon nanotube Substances 0.000 claims abstract description 41
- 229910021393 carbon nanotube Inorganic materials 0.000 claims abstract description 41
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052802 copper Inorganic materials 0.000 claims abstract description 7
- 239000010949 copper Substances 0.000 claims abstract description 7
- 239000011104 metalized film Substances 0.000 claims description 9
- 239000004743 Polypropylene Substances 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 239000010408 film Substances 0.000 claims description 3
- 239000011261 inert gas Substances 0.000 claims description 3
- -1 polypropylene Polymers 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 abstract description 5
- 238000013528 artificial neural network Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 206010063385 Intellectualisation Diseases 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012549 training Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/38—Multiple capacitors, i.e. structural combinations of fixed capacitors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/12—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid, for detecting components in the fluid
- G01N27/125—Composition of the body, e.g. the composition of its sensitive layer
- G01N27/127—Composition of the body, e.g. the composition of its sensitive layer comprising nanoparticles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G2/00—Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
- H01G2/14—Protection against electric or thermal overload
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/40—Structural combinations of fixed capacitors with other electric elements, the structure mainly consisting of a capacitor, e.g. RC combinations
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Nanotechnology (AREA)
- Electrochemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
Abstract
The invention discloses a reactive compensation capacitor with gas detection, which comprises a capacitor shell, wherein a plurality of groups of capacitor units are arranged in the capacitor shell, a carbon nano tube gas sensing and calculating integrated array is arranged on a bypass of each capacitor unit, the carbon nano tube gas sensing and calculating integrated array is connected with a display screen, and the upper end of the capacitor shell is connected with three copper columns. The invention determines the performance change of the capacitor by monitoring the content of different gases in the capacitor.
Description
Technical Field
The invention belongs to the technical field of power capacitors, and relates to a reactive compensation capacitor with gas detection.
Background
With the continuous progress of society, the electrical and mechanical development is rapid, the industrial electricity consumption is increased, the electricity consumption cost of enterprises is also increased, the quality of a power grid is obviously reduced, and in order to further improve the power factor, improve the quality of electric energy and reduce the line loss from a power supply end to an electricity consumption end, a reactive compensation capacitor is widely used in an electric power system. When the capacitor works, the performance of the internal medium is changed due to overvoltage, overcurrent and the like, and the capacitor is heated by the overvoltage and the overcurrent, so that the aging of the insulating medium of the capacitor is accelerated, the insulating strength is reduced, and even the capacitor is broken down. At present, a high-voltage parallel power capacitor is usually of an oil-immersed type, the oil-immersed power capacitor generates gas under the action of overvoltage or overcurrent, and the content of different gases reflects the health condition of the power capacitor.
At present, the reactive compensation capacitor health detection method mainly comprises an external observation method and an insulation megger test method, wherein the external observation method mainly observes appearance changes of the capacitor, such as shell deformation, expansion, breakage and the like. In addition, the capacitor may also make a harsh sound when it fails. The measurement result of the method is a serious condition of capacitor damage, the fault is usually found to be late, the safety cannot be guaranteed, meanwhile, the real-time monitoring cannot be carried out, the conclusion can be obtained through manual observation, and the insulation megger test method needs to disconnect the capacitor from a power system and carry out independent measurement, so that the manpower and material resources are greatly consumed. And the gas detection can judge the damage condition of the capacitor in advance, and carry out safety early warning and troubleshooting in advance.
Disclosure of Invention
The invention aims to provide a reactive compensation capacitor with gas detection, which determines the performance change of the capacitor by monitoring different gas contents in the capacitor.
The reactive compensation capacitor with the gas detection function comprises a capacitor shell, wherein a plurality of groups of capacitor units are installed in the capacitor shell, a carbon nanotube gas sensing and calculating integrated array is arranged on a bypass of each capacitor unit and connected with a display screen, and three copper columns are connected to the upper end of the capacitor shell.
The invention is also characterized in that:
the carbon nanotube gas sensing and calculating integrated array comprises an upper layer and a lower layer, wherein the upper layer is a carbon nanotube gas sensor array, the lower layer is an RRAM resistive random access memory unit, and the carbon nanotube gas sensor array is connected with an LED digital display screen through a data connecting line.
The capacitor case is filled with an inert gas.
Each capacitor unit is wrapped with a metalized film, and the metalized film is wrapped with an insulating layer.
The metallized film is a polypropylene film.
The capacitor shell is square and made of aluminum.
The invention has the following beneficial effects:
1. the invention realizes the intelligent health detection of the electric reactive power compensation capacitor, and predicts the safe operation of the whole capacitor by detecting the gas in the capacitor in real time through the carbon nano tube gas sensing array.
2. The invention realizes the intellectualization of the power capacitor and provides due contribution to the intellectualization of the whole power system.
3. The carbon nano tube gas sensing array is an integrated chip, has small volume and high precision, and can monitor various gases in the environment in real time.
4. The present invention provides a new method of gas detection to monitor power capacitor faults.
Drawings
FIG. 1 is a schematic diagram of the structure of the reactive compensation capacitor with gas detection according to the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is a gas sensing and calculating integrated array diagram of carbon nanotubes in the reactive power compensation capacitor with gas detection according to the present invention;
fig. 4 is a schematic diagram of a carbon nanotube gas sensor.
In the figure: 1. the array comprises a capacitor shell, 2 capacitor units, 3 carbon nano tube gas sensing and calculating integrated array, 4 copper columns, 5 LED digital display, 6 insulating layer, 7 RRAM neural network, 10 carbon nano tube gas sensing and calculating integrated array unit, 11 silicon logic layer, 21 carbon nano tube gas sensor, 22 dielectric layer, 23 RRAM top electrode, 24 resistance changing layer, 25 RRAM bottom electrode, 26 RRAM resistance changing memory unit and 31 external power supply.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The reactive compensation capacitor with the gas detection function comprises a capacitor shell 1 and a carbon nano tube gas sensing and calculating integrated array 3 as shown in figures 1-4;
the capacitor shell 1 is an aluminum shell with high heat dissipation speed and good density, a plurality of groups of capacitor units 2 are arranged in the capacitor shell 1, three copper columns 4 are arranged at the upper part of the capacitor shell 1 (the three copper columns 4 are capacitor terminals, and the capacitor shell 1 and the copper columns 4 are connected in a sealing manner), so that the capacitor units 2 are ensured to be in good contact with an external line; a carbon nanotube gas sensing and calculating integrated array 3 is arranged on the bypass of the capacitor unit 2; as shown in fig. 2, the carbon nanotube gas sensing and calculating integrated array 3 is composed of a plurality of carbon nanotube gas sensing and calculating integrated units 10 and a silicon logic layer 11; as shown in fig. 3, the carbon nanotube gas sensing and calculating integrated array 3 includes an upper layer and a lower layer, the upper layer is a carbon nanotube gas sensor 21, the lower layer is a RRAM resistive random access memory unit 26, and the RRAM resistive random access memory unit 26 includes a RRAM top electrode 23, a resistive random access layer 24, and a RRAM bottom electrode 25 connected in sequence; the capacitor case 1 is filled with inert gas; each capacitor unit 2 is wrapped with a metallized film, and the metallized film is wrapped with an insulating layer 6; the gas sensing array is placed in a vacuum within the capacitor housing 1.
The carbon nano tube gas sensor array 3 is connected with the RRAM neural network 7 through a data connecting line, and the output end of the RRAM neural network 7 is connected with the LED digital display screen 5 through a data connecting line. The metallized film is a polypropylene film. The capacitor case 1 is square.
As shown in fig. 4, the external power source 31 acts on the carbon nanotube gas sensor 21, and when the gas composition in the capacitor changes, the conductance of the carbon nanotube gas sensor 21 changes, so that the voltage across the sensor can reflect the change of the gas composition; in particular, the carbon nanotube conductive path in the carbon nanotube gas sensor 21 is almost entirely composed of surface atoms, so even microscopic changes in the chemical gas composition of the surrounding environment can cause appreciable changes in other properties of the carbon nanotube device's electrical conductance. The semiconducting carbon nanotube is p-type in a normal air environment, i.e., its majority is a hole. When a reducing gas contacts the carbon nanotubes, if charge transfer occurs, electrons enter the carbon nanotubes and recombine with holes therein, thereby decreasing the conductance of the semiconductor carbon nanotubes, and similarly, if an oxidizing gas contacts the semiconductor carbon nanotubes, the electrons in the carbon nanotubes are taken away by the gas, increasing the number of holes in the carbon nanotubes and increasing the conductance thereof, and the operation principle is shown in fig. 3.
The carbon nano tube gas sensing and calculating integrated array 3 senses the distribution of gas components in space, the gas component distribution data sensed by the carbon nano tube gas sensor array is stored in the RRAM storing and calculating integrated array at the lower layer, and the RRAM neural network 7 in the RRAM storing and calculating integrated array periodically reads the data from the RRAM storing and calculating integrated array to perform learning, namely weight training. When there is a change in the gas data detected by the carbon nanotube gas sensor array 3, the health of the capacitor is determined by analyzing the gas composition. The LED display 5 is used to digitize the sensing data of the carbon nanotube gas sensor array, facilitating human identification and operation.
The invention provides a reactive compensation capacitor with gas detection, which can detect gas components in a space and predict the faults of the capacitor through the proportion of different gas components by monitoring the content of different gases in the capacitor, determining the performance change of the capacitor and storing gas monitoring data into an RRAM (resistive random access memory) storage and calculation integrated array. The problem that the power system is damaged by the reactive compensation capacitor fault can be effectively solved.
Claims (6)
1. Take reactive compensation condenser of gaseous detection, its characterized in that: the capacitor comprises a capacitor shell, wherein a plurality of groups of capacitor units are installed in the capacitor shell, a carbon nanotube gas sensing and calculating integrated array is arranged on a bypass of each capacitor unit, the carbon nanotube gas sensing and calculating integrated array is connected with a display screen, and the upper end of the capacitor shell is connected with three copper columns.
2. Reactive compensation capacitor with gas detection according to claim 1, characterized in that: the carbon nanotube gas sensing and calculating integrated array comprises an upper layer and a lower layer, wherein the upper layer is a carbon nanotube gas sensor array, the lower layer is an RRAM resistive random access memory unit, and the carbon nanotube gas sensor array is connected with an LED digital display screen through a data connecting line.
3. Reactive compensation capacitor with gas detection according to claim 1, characterized in that: the capacitor case is filled with an inert gas.
4. Reactive compensation capacitor with gas detection according to claim 1, characterized in that: each capacitor unit is wrapped with a metalized film, and the metalized film is wrapped with an insulating layer.
5. Reactive compensation capacitor with gas detection according to claim 1, characterized in that: the metallized film is a polypropylene film.
6. Reactive compensation capacitor with gas detection according to claim 1, characterized in that: the capacitor shell is square, and is made of aluminum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111609738.4A CN114496569A (en) | 2021-12-27 | 2021-12-27 | Reactive compensation capacitor with gas detection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111609738.4A CN114496569A (en) | 2021-12-27 | 2021-12-27 | Reactive compensation capacitor with gas detection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114496569A true CN114496569A (en) | 2022-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111609738.4A Pending CN114496569A (en) | 2021-12-27 | 2021-12-27 | Reactive compensation capacitor with gas detection function |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009266563A (en) * | 2008-04-24 | 2009-11-12 | Toyota Motor Corp | Energy storage device |
| CN101840780A (en) * | 2010-05-29 | 2010-09-22 | 佛山市顺德区巨华电力电容器制造有限公司 | Self-healing low-voltage reactive power compensation capacitor |
| CN108054765A (en) * | 2018-01-16 | 2018-05-18 | 上海思源电力电容器有限公司 | A kind of integrated capacitor device compensation device |
| CN112585457A (en) * | 2018-06-08 | 2021-03-30 | 麻省理工学院 | Systems, devices, and methods for gas sensing |
| CN113611532A (en) * | 2021-10-09 | 2021-11-05 | 海鑫电力设备制造(南通)有限公司 | High condenser of security |
-
2021
- 2021-12-27 CN CN202111609738.4A patent/CN114496569A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009266563A (en) * | 2008-04-24 | 2009-11-12 | Toyota Motor Corp | Energy storage device |
| CN101840780A (en) * | 2010-05-29 | 2010-09-22 | 佛山市顺德区巨华电力电容器制造有限公司 | Self-healing low-voltage reactive power compensation capacitor |
| CN108054765A (en) * | 2018-01-16 | 2018-05-18 | 上海思源电力电容器有限公司 | A kind of integrated capacitor device compensation device |
| CN112585457A (en) * | 2018-06-08 | 2021-03-30 | 麻省理工学院 | Systems, devices, and methods for gas sensing |
| CN113611532A (en) * | 2021-10-09 | 2021-11-05 | 海鑫电力设备制造(南通)有限公司 | High condenser of security |
Non-Patent Citations (2)
| Title |
|---|
| 王燕，曹建亮，刘宝忠: "《低维a-Fe2O3纳米材料的合成、改性及其气体敏感应用》", 31 May 2016, 吉林大学出版社, pages: 38 * |
| 高治军，许可: "《极限制造》", 31 December 2018, 中国矿业大学出版社, pages: 73 - 76 * |
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