CN109459560A - A kind of high-voltage parallel capacitor device and power equipment - Google Patents
A kind of high-voltage parallel capacitor device and power equipment Download PDFInfo
- Publication number
- CN109459560A CN109459560A CN201811606596.4A CN201811606596A CN109459560A CN 109459560 A CN109459560 A CN 109459560A CN 201811606596 A CN201811606596 A CN 201811606596A CN 109459560 A CN109459560 A CN 109459560A
- Authority
- CN
- China
- Prior art keywords
- hydrogen gas
- gas sensor
- capacitor
- reactor
- cabinet
- 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.)
- Pending
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/26—Oils; viscous liquids; paints; inks
- G01N33/28—Oils, i.e. hydrocarbon liquids
- G01N33/2835—Oils, i.e. hydrocarbon liquids specific substances contained in the oil or fuel
- G01N33/2841—Oils, i.e. hydrocarbon liquids specific substances contained in the oil or fuel gas in oil, e.g. hydrogen in insulating oil
-
- 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
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
- G01R31/1281—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of liquids or gases
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-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
Abstract
The present invention relates to electrical equipment technical fields, specifically disclose a kind of high-voltage parallel capacitor device, wherein, high-voltage parallel capacitor device includes: capacitor cabinet and reactor cabinet, capacitor cabinet is connected with reactor cabinet, oil is provided in capacitor cabinet and reactor box body, the first hydrogen gas sensor is provided in capacitor box body, the second hydrogen gas sensor is provided in reactor box body, the probe of first hydrogen gas sensor and the second hydrogen gas sensor is arranged in oil, first hydrogen gas sensor and the second hydrogen gas sensor can be communicated to connect with master controller, first hydrogen gas sensor is for the hydrogen content in the intracorporal oil of real-time monitoring capacitor box, second hydrogen gas sensor is for the hydrogen content in the intracorporal oil of real-time monitoring reactor box.The invention also discloses a kind of power equipments.High-voltage parallel capacitor device provided by the invention can be realized effective monitoring to the use state of capacitor and reactor, and have the advantages of simple structure and easy realization.
Description
Technical field
The present invention relates to electrical equipment technical field more particularly to a kind of high-voltage parallel capacitor device and including the high pressure
The power equipment of parallel capacitor device.
Background technique
Compact Assembled high-voltage shunted capacitor device, by integrated capacitor, oil immersed type current-limiting reactor, oil immersed type
The equipment such as discharge coil, Zinc-Oxide Arrester and long cable section of ingoing line case are composed, and distinguishing feature is by capacitor, reactor point
It is not placed in union integrator in respective oil-filled cabinet.And effectively prison is lacked for the use state of capacitor and reactor
It surveys.
How to realize becomes those skilled in the art urgently to effective monitoring of the use state of capacitor and reactor
Technical problem to be solved.
Summary of the invention
The present invention is directed at least solve one of the technical problems existing in the prior art, a kind of high-voltage parallel capacitor is provided
Device and power equipment including the high-voltage parallel capacitor device, to solve the problems of the prior art.
As the first aspect of the invention, a kind of high-voltage parallel capacitor device is provided, wherein the high-voltage parallel electricity
Case includes: capacitor cabinet and reactor cabinet, and the capacitor cabinet is connected with the reactor cabinet, the electricity
It is provided with oil in container box and the reactor box body, the first hydrogen gas sensor, institute are provided in the capacitor box body
It states and is provided with the second hydrogen gas sensor in reactor box body, the spy of first hydrogen gas sensor and second hydrogen gas sensor
Head is arranged in oil, and first hydrogen gas sensor and second hydrogen gas sensor can be with master controller communication links
It connects, first hydrogen gas sensor is for the hydrogen content in the intracorporal oil of capacitor box described in real-time monitoring, second hydrogen
Gas sensor is for the hydrogen content in the intracorporal oil of reactor box described in real-time monitoring.
Preferably, the first acetylene sensor, the spy of first acetylene sensor are additionally provided in the capacitor box body
Head is arranged in oil, and first acetylene sensor can be communicated to connect with the master controller, for electricity described in real-time monitoring
The acetylene content of the intracorporal oil of container case.
Preferably, the second acetylene sensor, the spy of second acetylene sensor are additionally provided in the reactor box body
Head is arranged in oil, and second acetylene sensor can be communicated to connect with the master controller, for electricity described in real-time monitoring
The acetylene content of the anti-intracorporal oil of device case.
As the second aspect of the invention, a kind of power equipment is provided, wherein the power equipment includes master controller
With previously described high-voltage parallel capacitor device, the first hydrogen gas sensor in the high-voltage parallel capacitor device and described
Second hydrogen gas sensor is communicated to connect with the master controller, and the master controller is used for according to first hydrogen gas sensor
The hydrogen content monitored with second hydrogen gas sensor judges the use state of capacitor cabinet and reactor cabinet.
Preferably, the master controller includes single-chip microcontroller.
High-voltage parallel capacitor device provided by the invention, by the way that the first hydrogen gas sensor is arranged in capacitor box body,
Second hydrogen gas sensor is set in reactor box body, can hydrogen content in real-time monitoring oil, so that master controller can be with
Deduce the insulation ag(e)ing degree of capacitor and reactor respectively according to the hydrogen content monitored, it is therefore, provided by the invention
High-voltage parallel capacitor device can be realized effective monitoring to the use state of capacitor and reactor, and structure is simple, easily
In realization.
Detailed description of the invention
The drawings are intended to provide a further understanding of the invention, and constitutes part of specification, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of high-voltage parallel capacitor device provided by the invention.
Fig. 2 is the structural block diagram of power equipment provided by the invention.
Specific embodiment
Below in conjunction with attached drawing, detailed description of the preferred embodiments.It should be understood that this place is retouched
The specific embodiment stated is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
As the first aspect of the invention, a kind of high-voltage parallel capacitor device is provided, wherein as shown in Figure 1, described
High-voltage parallel capacitor device 100 includes: capacitor cabinet 110 and reactor cabinet 120, the capacitor cabinet 110 and institute
The connection of reactor cabinet 120 is stated, is provided with oil, the capacitor in the capacitor cabinet 110 and the reactor cabinet 120
It is provided with the first hydrogen gas sensor 111 in device cabinet 110, is provided with the second hydrogen gas sensor in the reactor cabinet 120
121, the probe of first hydrogen gas sensor 111 and second hydrogen gas sensor 121 is arranged in oil, first hydrogen
Gas sensor 111 and second hydrogen gas sensor 121 can be communicated to connect with master controller, first hydrogen gas sensor
111 are used for for the hydrogen content in the oil in capacitor cabinet 110 described in real-time monitoring, second hydrogen gas sensor 121
The hydrogen content in oil in reactor cabinet 120 described in real-time monitoring.
High-voltage parallel capacitor device provided by the invention, by the way that the first hydrogen gas sensor is arranged in capacitor box body,
Second hydrogen gas sensor is set in reactor box body, can hydrogen content in real-time monitoring oil, so that master controller can be with
Deduce the insulation ag(e)ing degree of capacitor and reactor respectively according to the hydrogen content monitored, it is therefore, provided by the invention
High-voltage parallel capacitor device can be realized effective monitoring to the use state of capacitor and reactor, and structure is simple, easily
In realization.
Specifically, real-time monitoring, the capacitor cabinet are carried out to the malfunction of capacitor cabinet 110 in order to realize
The first acetylene sensor 112 is additionally provided in 110, the probe of first acetylene sensor 112 is arranged in oil, and described first
Acetylene sensor 112 can be communicated to connect with the master controller, for the oil in capacitor cabinet 110 described in real-time monitoring
Acetylene content.
Specifically, real-time monitoring, the reactor cabinet are carried out to the malfunction of reactor cabinet 120 in order to realize
The second acetylene sensor 122 is additionally provided in 120, the probe of second acetylene sensor 122 is arranged in oil, and described second
Acetylene sensor 122 can be communicated to connect with the master controller, for the oil in reactor cabinet 120 described in real-time monitoring
Acetylene content.
High-voltage parallel capacitor device provided by the invention, by the way that acetylene is arranged in capacitor cabinet and reactor box body
Sensor is for distinguishing monitoring capacitor cabinet and the intracorporal acetylene gas content of reactor box, so that master controller is according to acetylene
Gas content deduces capacitor or Reactor Fault or internal Discharge Phenomena, and issues alarm or fault-signal.
It is carried out specifically below with reference to specific work process of the Fig. 1 to high-voltage parallel capacitor device provided by the invention
It is bright.High-voltage parallel capacitor device is provided with hydrogen gas sensor and acetylene sensor in capacitor cabinet；In reactor cabinet
Provided with hydrogen gas sensor and acetylene sensor.The probe of sensor gos deep into cabinet and soaks in the oil, and the signal of sensor is sent
End is located at outside cabinet, is connect by secondary cable with master controller.
When the capacitor or reactor of high-voltage parallel capacitor device are after insulation ag(e)ing or breakdown, the oil of corresponding cabinet
Middle hydrogen content will will increase, and can then be divided according to the increased degree of hydrogen content to insulation ag(e)ing degree.Such as:
Hydrogen content 100ppm is not required to take some countermeasures the following are safety zone；100 ~ 600ppm of hydrogen content is insulation gradually aging area, is built
View reinforces monitoring；The above are insulation risks areas by hydrogen content 600ppm, it is proposed that close supervision simultaneously takes necessary complete detection to arrange
It applies.
When being dissolved with acetylene gas in the capacitor of high-voltage parallel capacitor device or reactor oil, illustrate internal generation
Spark discharge or arc discharge, and can according to the intensity of how much corollary discharges of acetylene content.When acetylene content is exceeded, pass
Sensor is alarmed or long-range control tripping.
As the second aspect of the invention, a kind of power equipment is provided, wherein as shown in Fig. 2, the power equipment 10
Including master controller 200 and previously described high-voltage parallel capacitor device 100, in the high-voltage parallel capacitor device 100
The first hydrogen gas sensor and second hydrogen gas sensor with the master controller 200 believe connect, the master controller 200
Hydrogen content for being monitored according to first hydrogen gas sensor and second hydrogen gas sensor judges capacitor cabinet
With the use state of reactor cabinet.
Power equipment provided by the invention, by the way that the first hydrogen gas sensor is arranged in capacitor box body, in reactor box
In vivo setting the second hydrogen gas sensor, can real-time monitoring oil in hydrogen content, master controller can be according to the hydrogen monitored
Gas content deduces the insulation ag(e)ing degree of capacitor and reactor respectively, and therefore, power equipment provided by the invention can be real
Now to effective monitoring of the use state of capacitor and reactor, and have the advantages of simple structure and easy realization.
Preferably, the master controller 200 includes single-chip microcontroller.
It is understood that the principle that embodiment of above is intended to be merely illustrative of the present and the exemplary implementation that uses
Mode, however the present invention is not limited thereto.For those skilled in the art, essence of the invention is not being departed from
In the case where mind and essence, various changes and modifications can be made therein, these variations and modifications are also considered as protection scope of the present invention.
Claims (5)
1. a kind of high-voltage parallel capacitor device, which is characterized in that the high-voltage parallel capacitor device includes: capacitor cabinet
With reactor cabinet, the capacitor cabinet is connected with the reactor cabinet, the capacitor cabinet and the reactor box
It is provided with oil in vivo, the first hydrogen gas sensor is provided in the capacitor box body, is provided in the reactor box body
The probe of two hydrogen gas sensors, first hydrogen gas sensor and second hydrogen gas sensor is arranged in oil, and described
One hydrogen gas sensor and second hydrogen gas sensor can be communicated to connect with master controller, and first hydrogen gas sensor is used
Hydrogen content in the intracorporal oil of the capacitor box described in real-time monitoring, second hydrogen gas sensor is for described in real-time monitoring
Hydrogen content in the intracorporal oil of reactor box.
2. high-voltage parallel capacitor device according to claim 1, which is characterized in that also set up in the capacitor box body
There is the first acetylene sensor, the probe of first acetylene sensor is arranged in oil, and first acetylene sensor can be with
The master controller communication connection, the acetylene content for the intracorporal oil of capacitor box described in real-time monitoring.
3. high-voltage parallel capacitor device according to claim 1, which is characterized in that also set up in the reactor box body
There is the second acetylene sensor, the probe of second acetylene sensor is arranged in oil, and second acetylene sensor can be with
The master controller communication connection, the acetylene content for the intracorporal oil of reactor box described in real-time monitoring.
4. a kind of power equipment, which is characterized in that the power equipment includes any one in master controller and claims 1 to 3
High-voltage parallel capacitor device described in, the first hydrogen gas sensor and described second in the high-voltage parallel capacitor device
Hydrogen gas sensor is communicated to connect with the master controller, and the master controller is used for according to first hydrogen gas sensor and institute
State the use state that the hydrogen content that the second hydrogen gas sensor monitors judges capacitor cabinet and reactor cabinet.
5. power equipment according to claim 4, which is characterized in that the master controller includes single-chip microcontroller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811606596.4A CN109459560A (en) | 2018-12-27 | 2018-12-27 | A kind of high-voltage parallel capacitor device and power equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811606596.4A CN109459560A (en) | 2018-12-27 | 2018-12-27 | A kind of high-voltage parallel capacitor device and power equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109459560A true CN109459560A (en) | 2019-03-12 |
Family
ID=65615020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811606596.4A Pending CN109459560A (en) | 2018-12-27 | 2018-12-27 | A kind of high-voltage parallel capacitor device and power equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109459560A (en) |
Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4402211A (en) * | 1980-05-20 | 1983-09-06 | Hitachi, Ltd. | System for monitoring abnormality of oil-filled electric devices |
| JPH0194253A (en) * | 1987-10-05 | 1989-04-12 | Nissin Electric Co Ltd | Gas-in-oil sensor |
| JPH06120043A (en) * | 1992-10-02 | 1994-04-28 | Mitsubishi Electric Corp | Oil-filled electric apparatus interior diagnosing device |
| US6324891B1 (en) * | 1998-04-14 | 2001-12-04 | General Electric Company | Method and apparatus for monitoring GAS(ES) in a dielectric fluid |
| US20040112764A1 (en) * | 2002-12-13 | 2004-06-17 | Stokes Edward B. | Sensor device for detection of dissolved hydrocarbon gases in oil filled high-voltage electrical equipment |
| JP2006029913A (en) * | 2004-07-14 | 2006-02-02 | Mitsubishi Electric Plant Engineering Corp | Monitor for dissolved gas in oil |
| CN101363813A (en) * | 2007-08-10 | 2009-02-11 | 深圳市奥特迅传感技术有限公司 | Gas sensor for monitoring gas content in insulating oil |
| US20090166197A1 (en) * | 2008-01-02 | 2009-07-02 | General Electric Company | Sensor apparatus for measuring and detecting acetylene and hydrogen dissolved in a fluid |
| CN101487818A (en) * | 2009-02-20 | 2009-07-22 | 国网电力科学研究院 | On-line monitoring method and system for gas content in transformer oil |
| US20110246088A1 (en) * | 2010-04-02 | 2011-10-06 | Eduardo Pedrosa Santos | System and method for monitoring dissolved gases in insulating oil of power transformers, reactors, on-load tap changers, current transformers, potential transformers, condensive bushings as well as similar high voltage equipments immersed in oil |
| CN202583180U (en) * | 2012-03-13 | 2012-12-05 | 陵县供电公司 | Real-time monitoring device for content of hydrogen in transformer oil |
| CN104749223A (en) * | 2015-04-15 | 2015-07-01 | 海卓赛思（苏州）传感技术有限公司 | Hydrogen gas sensor for monitoring concentration of hydrogen gas of oil-immersed transformer in online manner and using method thereof |
| CN106940299A (en) * | 2017-04-11 | 2017-07-11 | 南京航空航天大学 | It is a kind of to be used for the micro-nano fiber sensor of dissolving hydrogen detection in transformer oil |
| CN107179459A (en) * | 2017-06-09 | 2017-09-19 | 广西电网有限责任公司电力科学研究院 | A kind of condition monitoring system of high voltage reactor latency defect |
| CN207232165U (en) * | 2017-06-09 | 2018-04-13 | 广西电网有限责任公司电力科学研究院 | A kind of real-time detection apparatus of high-voltage shunt reactor operating status |
| CN108008270A (en) * | 2017-12-29 | 2018-05-08 | 日新电机（无锡）有限公司 | One kind can monitor partial discharge Assembled high-voltage shunted capacitor device on-line |
| 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 |
| CN209513792U (en) * | 2018-12-27 | 2019-10-18 | 日新电机（无锡）有限公司 | A kind of high-voltage parallel capacitor device and power equipment |
-
2018
- 2018-12-27 CN CN201811606596.4A patent/CN109459560A/en active Pending
Patent Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4402211A (en) * | 1980-05-20 | 1983-09-06 | Hitachi, Ltd. | System for monitoring abnormality of oil-filled electric devices |
| JPH0194253A (en) * | 1987-10-05 | 1989-04-12 | Nissin Electric Co Ltd | Gas-in-oil sensor |
| JPH06120043A (en) * | 1992-10-02 | 1994-04-28 | Mitsubishi Electric Corp | Oil-filled electric apparatus interior diagnosing device |
| US6324891B1 (en) * | 1998-04-14 | 2001-12-04 | General Electric Company | Method and apparatus for monitoring GAS(ES) in a dielectric fluid |
| US20040112764A1 (en) * | 2002-12-13 | 2004-06-17 | Stokes Edward B. | Sensor device for detection of dissolved hydrocarbon gases in oil filled high-voltage electrical equipment |
| JP2006029913A (en) * | 2004-07-14 | 2006-02-02 | Mitsubishi Electric Plant Engineering Corp | Monitor for dissolved gas in oil |
| CN101363813A (en) * | 2007-08-10 | 2009-02-11 | 深圳市奥特迅传感技术有限公司 | Gas sensor for monitoring gas content in insulating oil |
| US20090166197A1 (en) * | 2008-01-02 | 2009-07-02 | General Electric Company | Sensor apparatus for measuring and detecting acetylene and hydrogen dissolved in a fluid |
| CN101487818A (en) * | 2009-02-20 | 2009-07-22 | 国网电力科学研究院 | On-line monitoring method and system for gas content in transformer oil |
| US20110246088A1 (en) * | 2010-04-02 | 2011-10-06 | Eduardo Pedrosa Santos | System and method for monitoring dissolved gases in insulating oil of power transformers, reactors, on-load tap changers, current transformers, potential transformers, condensive bushings as well as similar high voltage equipments immersed in oil |
| CN202583180U (en) * | 2012-03-13 | 2012-12-05 | 陵县供电公司 | Real-time monitoring device for content of hydrogen in transformer oil |
| CN104749223A (en) * | 2015-04-15 | 2015-07-01 | 海卓赛思（苏州）传感技术有限公司 | Hydrogen gas sensor for monitoring concentration of hydrogen gas of oil-immersed transformer in online manner and using method thereof |
| CN106940299A (en) * | 2017-04-11 | 2017-07-11 | 南京航空航天大学 | It is a kind of to be used for the micro-nano fiber sensor of dissolving hydrogen detection in transformer oil |
| CN107179459A (en) * | 2017-06-09 | 2017-09-19 | 广西电网有限责任公司电力科学研究院 | A kind of condition monitoring system of high voltage reactor latency defect |
| CN207232165U (en) * | 2017-06-09 | 2018-04-13 | 广西电网有限责任公司电力科学研究院 | A kind of real-time detection apparatus of high-voltage shunt reactor operating status |
| CN108008270A (en) * | 2017-12-29 | 2018-05-08 | 日新电机（无锡）有限公司 | One kind can monitor partial discharge Assembled high-voltage shunted capacitor device on-line |
| 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 |
| CN209513792U (en) * | 2018-12-27 | 2019-10-18 | 日新电机（无锡）有限公司 | A kind of high-voltage parallel capacitor device and power equipment |
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