CN203606277U - Device for intelligently detecting ozone content of partial discharge of high-tension switch cabinet - Google Patents
Device for intelligently detecting ozone content of partial discharge of high-tension switch cabinet Download PDFInfo
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- CN203606277U CN203606277U CN201320796926.7U CN201320796926U CN203606277U CN 203606277 U CN203606277 U CN 203606277U CN 201320796926 U CN201320796926 U CN 201320796926U CN 203606277 U CN203606277 U CN 203606277U
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Abstract
The utility model discloses a device for intelligently detecting the ozone content of partial discharge of a high-tension switch cabinet, and the device is capable of fully using the high-tension switch cabinet. The device is characterized by comprising gas production ports, a gas production electromagnetic valve, a gas absorption pool, a pressure sensor, a temperature sensor, a low-pressure mercury lamp and a photodiode, wherein the gas production ports are arranged inside/outside the high-tension switch cabinet; the gas production electromagnetic valve is communicated with the gas production ports respectively by virtue of a direct feed-into channel and an ozone decomposition channel; the gas absorption pool collects and stores gas samples and is provided with a quartz light-inlet window; the pressure sensor and the temperature sensor are used for measuring the pressure and temperature of collected gas; the low-pressure mercury lamp is arranged on the quartz light-inlet window on one side of the gas absorption pool and emits ultraviolet detection light; the photodiode is arranged on the quartz light-inlet window on the other side of the gas absorption pool. The device is arranged inside or outside the high-tension switch cabinet, and can be used for collecting detected partial discharge signals to a comprehensive processing unit, so that the problems in the on-line monitoring of partial discharge of the high-tension switch cabinet can be solved, thereby realizing the detection, diagnosis, data storage, contrast, query and uploading of partial discharge.
Description
Technical field
The utility model relates in a kind of intelligent grid research and the application of power supply or controller switching equipment fault detect, particularly relates to the pick-up unit of high-tension switch cabinet shelf depreciation.
Background technology
High-tension switch cabinet shelf depreciation is electric discharge or the spark that has SI semi-insulation region between conductive electrode to produce in high-tension switch cabinet, if or certain region electric field intensity exceeded the breakdown field strength of insulating material, shelf depreciation just may be in this insulation position generation.Shelf depreciation can occur in the air gap of solid insulation, due to pollute or electric field inhomogeneous and occur on insulating material surface, or occur in the bubble of iknsulating liquid, or the gas corona of electrode.The mode of shelf depreciation emittance has: electromagnetic radiation, with the form of radiowave, light and heat; Acoustic irradiation, can hear or ultrasound wave; Ozone and oxides of nitrogen.
Partial discharge phenomenon devices illustrated insulation quality worsens and may cause the accident, and worsening can be more and more serious, and consequently insulation can not be born specified electric field intensity, and causes flashover, finally causes facility and electrical network in badly damaged switch cubicle to interrupt.At present, existing multiple technologies are monitored the local discharge signal of high-tension switch cabinet both at home and abroad, mainly contain pulse current method, radio frequency method, supercritical ultrasonics technology and superfrequency method etc.But, also there are in actual applications some problems, mainly comprise: the signal data form that 1, all kinds of devices detect is different, need be through the professional software ability discriminance analysis of customization; 2, because switch cubicle device context electromagnetic environment is complicated and have neighbourhood noise, the easily test generation deviation to above four kinds of methods.In sum, four kinds of methods accurate status early warning and difficult diagnosis to switch cabinet equipment shelf depreciation.
In addition be only that main concentrating is the industry such as environmental protection, medical chemical industry about the research that adopts ultraviolet detection spectral absorption method measure gas concentrations technology.And the not detection analysis for shelf depreciation to this obvious characteristic of ozone content.
Ultraviolet absorption spectroscopy is to utilize gas with various at ultraviolet band, light to be had to select the characteristic absorbing to measure gas componant and the concentration in discharge flue gas.Based on this method design a set of can be real-time, the experimental provision of the corresponding gas of on-line monitoring.Under normal temperature and pressure state, by a spectrum of measuring is analyzed, calculate the standard absorption cross section of surveyed gas, select suitable data processing method, reduce the concentration error in when calculating, can draw the real-time concentration value of surveyed gas.
Summary of the invention
High-tension switch cabinet is electrical equipment common in electric system, and the deteriorated or defect of its built-in electrical insulation all can threaten to equipment safety operation.All kinds of insulation defects puncture from developing into finally, often first pass through the shelf depreciation stage, and the power of shelf depreciation can reflect state of insulation in time, therefore judge state of insulation by on-line monitoring shelf depreciation, be widely regarded as the effective means that realizes switch cubicle insulated on-line monitoring and diagnosis.
Uv absorption technology law for measuring atmospheric ozone, has high-precision and accuracy for a long time.The high-tension switch cabinet Partial Discharge Detecting Technology of ozone-ultraviolet absorption spectrum is utilized the characteristic of ozone to 253.7nm length ultraviolet line characteristic absorption, thus shelf depreciation situation in the reflection of the ozone concentration in monitoring switch cabinet switch cubicle.The advantage of this technology is effectively to avoid neighbourhood noise and complex electromagnetic environment to affect monitoring result, and intuitively shows the ozone content that shelf depreciation produces; More effectively reflect truly the actual conditions that in switch cubicle, shelf depreciation occurs.Reduce switch cubicle because the apparatus insulated deteriorated electrical equipment causing that shelf depreciation causes uses accident rate thereby reach, reduce maintenance of electric device cost and time, for the reliable and stable operation of equipment provides safeguard.
The purpose of this utility model is to provide a kind of high-tension switch cabinet shelf depreciation ozone content intelligent detection device, the ozone content that high-tension switch cabinet shelf depreciation is produced detects, and be correspondingly processed, for insulated on-line monitoring and the diagnosis of switch cubicle provide foundation.
For reaching above-mentioned purpose, the technical solution of the utility model is:
A kind of high-tension switch cabinet shelf depreciation ozone content intelligent detection device, it takes full advantage of high-tension switch cabinet, it is characterized in that comprising:
Be arranged on the gas production mouth of high-tension switch cabinet inside/outside;
The gas production solenoid valve being communicated with gas production mouth by directly sending into passage and ozone decomposed passage respectively is wherein provided with the electronics zero point for determinator, the ozone decomposed filtering element of duration 5-10 minute in described ozone decomposed passage;
Be connected with described gas production solenoid valve output terminal by pipeline, collect and store sample gas be provided with the gas absorption cell of quartzy light inlet window;
Arrange to the pipeline of gas absorption cell at gas production solenoid valve, for measuring pressure transducer and the temperature sensor of pressure and temperature of gathered gas;
Be located at described gas absorption cell one kerbstone English light inlet window, see through quartzy light inlet window and launch the low pressure mercury lamp that main wavelength is the ultraviolet detection light of 254mm;
Be located at described gas absorption cell opposite side quartz light inlet window, see through quartzy light inlet window and receive the photodiode of the ultraviolet detection light that described low pressure mercury lamp sends.
Described photodiode is provided with the built-in interference filter that concentrates on 254nm wavelength, and this wavelength is the main wavelength of the light of described low pressure mercury lamp transmitting.
Described gas production solenoid valve can automatically be changed the air entering by gas production mouth is transported to gas absorption cell by directly sending into passage, maybe will air be sent into gas absorption cell by ozone decomposed passage, and the two hockets.
The high-tension switch cabinet shelf depreciation ozone content intelligent detection device of above structure, shelf depreciation ozone content detecting sensor is arranged on to high-tension switch cabinet apparatus body outside or inner, and the local discharge signal detecting is collected to overall treatment unit, can solve the problems referred to above that face in high-tension switch cabinet partial discharge monitoring.Thereby realize shelf depreciation detection, diagnosis, data storage, contrast, inquire about and upload.
Accompanying drawing explanation
Fig. 1 is structural representation block diagram of the present utility model;
Pneumatic pump in the drawings, 1, gas production mouth, 2, ozone decomposed filtering element, 3, solenoid valve, 4, pressure transducer, 5, temperature sensor, 6, gas absorption cell, 7, low pressure mercury lamp, 8, photodiode, 9.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Shown in Fig. 1, be structural principle schematic diagram block diagram of the present utility model, its principle of work is as follows:
1) gas production mouth 1 is responsible for gathering the air in high-tension switch cabinet, contains the ozone that in high-tension switch cabinet, shelf depreciation produces in air; Gas production mouth 1 is provided with and directly sends into passage and ozone decomposed passage.
2) in ozone decomposed passage, be provided with an ozone decomposed filtering element 2, for the electronics zero point of determinator, duration 5-10 minute.In the time that electronics zero deviation reaches the concrete numerical value that may quantize, and carry out zero point correction correction.
Zero point correction modification method: be 1 o'clock at gasmetry signal, the demonstration of determinator also should be zero.Such as in environmental gas and when ozone free composition, the measuring-signal that sensor detects is non-vanishing; And the indicating value of determinator is zero, need sensor to be adjusted into zero.
The principle of ozone decomposed filtering element 2 and effect: ozone decomposed filtering element is that efficient ozone decomposition catalyst uniform particles is poured into and sealed up for safekeeping in specific honeycomb substrates, and surrounding can adopt trimming frame, stainless steel frame etc.; There is the features such as ozone decomposed ability is strong, long service life.Every 1g ozone decomposition catalyst can decompose 200 ~ 250mg ozone.
Gas production solenoid valve 3 is communicated with gas production mouth 1 by directly sending into passage and ozone decomposed passage respectively, can automatically change the air entering by gas production mouth 1 is transported to gas absorption cell 6 by directly sending into passage, maybe will air be sent into gas absorption cell 6 by ozone decomposed passage; The two hockets.Air note through ozone decomposed passage is Io, is I through directly sending into the air note that passage enters without ozone decomposed passage.
4) from gas production solenoid valve 3 output terminals to the passage of gas absorption cell 6, establish pressure transducer 4 and temperature sensor 5, measure the pressure and temperature of the gas that gathers; Just can show ozone concentration according to part per billion volume ppbv mixture ratio form by temperature and pressure measured value like this.
5) gas absorption cell 6 is in order to collect and store sample gas, and a low pressure mercury lamp 7 is positioned at a side of gas absorption cell 6, and photodiode 8 is positioned at the opposite side of gas absorption cell 6.
6) low pressure mercury lamp 7 is launched the ultraviolet detection light that main wavelength is 254mm, and ozone molecule has absorption maximum characteristic at this wave band.Ultraviolet detection light can weaken by the long gas absorption cell that quartzy light inlet window is housed 6 of a 14cm, and ozone detects just based on this principle.
7) photodiode 8 has the built-in interference filter that concentrates on 254nm wavelength, and this wavelength is the main wavelength of the light of mercury lamp emission.Photodiode 8 sees through the light of quartzy light inlet window reception mercury lamp emission at opposite side, light intensity difference, and the size of current producing is also different, and the electric current that photodiode 8 is produced collects overall treatment unit and processes and analyze; Obviously the gas penetrability that, ozone concentration is large is little lower than ozone concentration; Thereby measure the concentration of ozone.
8) in pneumatic pump 9 extracting gases absorption cells 6, sample gas is discharged.
9) by processing and the analysis of size of current that photodiode 8 is produced, draw various data, curve and chart, realize shelf depreciation detection, diagnosis, data storage, contrast, inquire about and upload.Technician uses portable computer to transfer ozone content time-domain curve figure, verifies and confirms shelf depreciation development trend, and studies and defines corresponding counter-measure.
In actual applications, its advantage of the present utility model is:
1) flexible configuration: gas production mouth can, according to detecting the sample gas that need to gather respectively multiple high-tension switch cabinets or same switch cubicle plurality of positions, be realized flexible configuration, adapts to the scene needs of switch cubicle testing;
2) install simply: pick-up unit can be installed on outside high-tension switch cabinet body or in cabinet, does not change equipment original structure and the method for operation, realize primary circuit and secondary circuit isolation, in testing process, need not have a power failure to equipment simultaneously;
3) easy to maintenance: to adopt the interface mode of modular assembly, guarantee not have influence on the normal operation of other parts when to its single component maintenance or replacing;
4) when on-the-spot use, operating personnel only need be positioned over pick-up unit in switch cabinet or outside cabinet, just can realize demarcation to detecting gas concentration and the identification of electric discharge trend;
5) can realize on-line monitoring function, be applicable to carry out long term monitoring in the remote districts of limited power system.
Claims (3)
1. a high-tension switch cabinet shelf depreciation ozone content intelligent detection device, it takes full advantage of high-tension switch cabinet, it is characterized in that comprising:
Be arranged on the gas production mouth (1) of high-tension switch cabinet inside/outside;
The gas production solenoid valve (3) being communicated with gas production mouth (1) by directly sending into passage and ozone decomposed passage respectively, wherein in described ozone decomposed passage, be provided with the electronics zero point for determinator, the ozone decomposed filtering element (2) of continuous working period 5-10 minute;
Be connected with described gas production solenoid valve (3) output terminal by pipeline, collect and store sample gas be provided with the gas absorption cell (6) of quartzy light inlet window;
Arrange to the pipeline of gas absorption cell (6) at gas production solenoid valve (3), for measuring pressure transducer (4) and the temperature sensor (5) of pressure and temperature of gathered gas;
Be located at described gas absorption cell (6) one kerbstone English light inlet windows, see through quartzy light inlet window and launch the low pressure mercury lamp that main wavelength is the ultraviolet detection light of 254mm;
Be located at described gas absorption cell opposite side quartz light inlet window, see through quartzy light inlet window and receive the photodiode of the ultraviolet detection light that described low pressure mercury lamp sends.
2. high-tension switch cabinet shelf depreciation ozone content intelligent detection device according to claim 1, is characterized in that:
Described photodiode is provided with the built-in interference filter that concentrates on 254nm wavelength, and this wavelength is the main wavelength of the light of described low pressure mercury lamp transmitting.
3. high-tension switch cabinet shelf depreciation ozone content intelligent detection device according to claim 1, is characterized in that:
Described gas production solenoid valve can automatically be changed the air entering by gas production mouth is transported to gas absorption cell by directly sending into passage, maybe will air be sent into gas absorption cell by ozone decomposed passage, and the two hockets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320796926.7U CN203606277U (en) | 2013-12-06 | 2013-12-06 | Device for intelligently detecting ozone content of partial discharge of high-tension switch cabinet |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320796926.7U CN203606277U (en) | 2013-12-06 | 2013-12-06 | Device for intelligently detecting ozone content of partial discharge of high-tension switch cabinet |
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| CN203606277U true CN203606277U (en) | 2014-05-21 |
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| CN201320796926.7U Expired - Fee Related CN203606277U (en) | 2013-12-06 | 2013-12-06 | Device for intelligently detecting ozone content of partial discharge of high-tension switch cabinet |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104020121A (en) * | 2014-05-28 | 2014-09-03 | 广西电网公司电力科学研究院 | Switch-cabinet ozone-content identification system based on anti-interference key technology |
| CN104502545A (en) * | 2015-01-12 | 2015-04-08 | 国网上海市电力公司 | Gas exhausting type ozone detector used for ring main unit |
| CN105548838A (en) * | 2015-12-15 | 2016-05-04 | 海南电力技术研究院 | Diagnosis method for insulation defect of switchgear |
| CN107621284A (en) * | 2017-09-30 | 2018-01-23 | 宝鸡长达电气科技有限公司 | A kind of HV switchboard online detection system |
| CN109406966A (en) * | 2018-11-28 | 2019-03-01 | 杭州电力设备制造有限公司 | High-tension switch cabinet local discharge on-line monitoring device based on gas method |
| CN109683074A (en) * | 2019-03-05 | 2019-04-26 | 云南电力技术有限责任公司 | A kind of high-tension switch cabinet partial discharge monitoring early warning system and method |
| CN110389287A (en) * | 2019-07-26 | 2019-10-29 | 云南电力试验研究院(集团)有限公司 | A kind of method for early warning and system of the electric discharge of high-tension switch cabinet interior insulation |
| CN113685722A (en) * | 2021-08-11 | 2021-11-23 | 广西电网有限责任公司电力科学研究院 | Insulating material aging gas collecting device in power switch cabinet |
-
2013
- 2013-12-06 CN CN201320796926.7U patent/CN203606277U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104020121A (en) * | 2014-05-28 | 2014-09-03 | 广西电网公司电力科学研究院 | Switch-cabinet ozone-content identification system based on anti-interference key technology |
| CN104020121B (en) * | 2014-05-28 | 2016-08-17 | 广西电网公司电力科学研究院 | A kind of switch cubicle ozone content identification system of anti-interference key technology |
| CN104502545A (en) * | 2015-01-12 | 2015-04-08 | 国网上海市电力公司 | Gas exhausting type ozone detector used for ring main unit |
| CN105548838A (en) * | 2015-12-15 | 2016-05-04 | 海南电力技术研究院 | Diagnosis method for insulation defect of switchgear |
| CN105548838B (en) * | 2015-12-15 | 2018-10-12 | 海南电力技术研究院 | The method for diagnosing switchgear insulation defect |
| CN107621284A (en) * | 2017-09-30 | 2018-01-23 | 宝鸡长达电气科技有限公司 | A kind of HV switchboard online detection system |
| CN109406966A (en) * | 2018-11-28 | 2019-03-01 | 杭州电力设备制造有限公司 | High-tension switch cabinet local discharge on-line monitoring device based on gas method |
| CN109406966B (en) * | 2018-11-28 | 2023-12-08 | 杭州电力设备制造有限公司 | High-voltage switch cabinet partial discharge on-line monitoring device based on gas method |
| CN109683074A (en) * | 2019-03-05 | 2019-04-26 | 云南电力技术有限责任公司 | A kind of high-tension switch cabinet partial discharge monitoring early warning system and method |
| CN110389287A (en) * | 2019-07-26 | 2019-10-29 | 云南电力试验研究院(集团)有限公司 | A kind of method for early warning and system of the electric discharge of high-tension switch cabinet interior insulation |
| CN113685722A (en) * | 2021-08-11 | 2021-11-23 | 广西电网有限责任公司电力科学研究院 | Insulating material aging gas collecting device in power switch cabinet |
| CN113685722B (en) * | 2021-08-11 | 2023-10-20 | 广西电网有限责任公司电力科学研究院 | Insulating material ageing gas collection device in power switch cabinet |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140521 Termination date: 20161206 |
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| CF01 | Termination of patent right due to non-payment of annual fee |