CN106291272B - A kind of high voltage switch cabinet fault monitoring device - Google Patents
A kind of high voltage switch cabinet fault monitoring device Download PDFInfo
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- CN106291272B CN106291272B CN201610585779.7A CN201610585779A CN106291272B CN 106291272 B CN106291272 B CN 106291272B CN 201610585779 A CN201610585779 A CN 201610585779A CN 106291272 B CN106291272 B CN 106291272B
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 20
- 239000007789 gas Substances 0.000 claims abstract description 130
- 239000000523 sample Substances 0.000 claims abstract description 35
- 238000012545 processing Methods 0.000 claims abstract description 18
- 239000002912 waste gas Substances 0.000 claims abstract description 12
- 238000001514 detection method Methods 0.000 claims abstract description 11
- 239000011810 insulating material Substances 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims abstract description 3
- -1 polytetrafluoroethylene Polymers 0.000 claims abstract 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract 2
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract 2
- 238000000034 method Methods 0.000 claims description 15
- 238000009413 insulation Methods 0.000 claims description 10
- 239000007787 solid Substances 0.000 claims description 9
- 230000002045 lasting effect Effects 0.000 claims description 4
- 230000008676 import Effects 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims description 2
- 230000010365 information processing Effects 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 abstract description 9
- 238000010292 electrical insulation Methods 0.000 abstract 1
- 238000005192 partition Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 3
- 238000002604 ultrasonography Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000006854 communication Effects 0.000 description 2
- 230000001052 transient effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Classifications
-
- 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
- G01R31/1254—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 gas-insulated power appliances or vacuum gaps
-
- 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
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
- G01N33/0037—NOx
-
- 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
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
- G01N33/004—CO or CO2
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Medicinal Chemistry (AREA)
- Food Science & Technology (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Combustion & Propulsion (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Gas-Insulated Switchgears (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
A kind of high voltage switch cabinet fault monitoring device, including gas probe (6), gas piping (7), gas detecting instrument (9), air pump (10), escape pipe (8), normally closed solenoid valve (11), waste gas filter (12) and message processing module (51), the gas-monitoring high voltage switch cabinet fault generated by detecting electric discharge realizes the live monitoring to inside switch cabinet incipient fault and continuous monitoring.By being arranged, in high-tension switch cabinet, respectively every indoor, gas is decomposed in the gas probe detection with horn-type opening structure to the present invention, gas component content is measured using gas detecting instrument (9), and the information such as gaseous species and concentration are decomposed according to the electric discharge that gas probe (6) detection for being arranged in different location obtains by message processing module (51) and judge incipient fault.The gas piping (7) is arranged along high-tension switch cabinet built-in electrical insulation partition board and inner wall.Gas probe (6) and gas piping (7) are that insulating materials makes, preferably polytetrafluoroethylene material.
Description
Technical field
The present invention relates to a kind of monitoring device of high-tension switch cabinet, more particularly to a kind of malfunction monitoring based on gas detection
Device.
Background technology
Equipment of the high-tension switch cabinet as largely being used in power grid, but it is directly related with customer power supply, as it breaks down
The economic loss brought that causes the accident and social loss are very big.In addition, due to inside switch cabinet narrow space, part is more, ties
Structure is complicated, insulation distance is small, therefore is easier generation insulation defect than other equipment, huge to be brought to equipment safety operation
Hidden danger.Therefore the failures such as shelf depreciation, overheat are carried out to running high-tension switch cabinet to be monitored, can is that switch cabinet state is examined
It repaiies and important parameter and foundation is provided, improve switchgear and test overhaul efficiency, to avoid switchgear burst accident, improve power supply matter
Amount has important application value.
Currently, phenomena such as according to the sound, light, electricity of shelf depreciation, develop measurement method with their own characteristics, such as non-electro-detection
The ultrasound examination of method, the hyperfrequency method in electro-detection method, pulse current method etc., in addition there are discharge to examine dedicated for switchgear
The transient state voltage-to-ground method of survey.
But the above method is realizing that the when of monitoring on-line there is also some problems.Since inside switch cabinet is complicated, ultrasound
Decaying, distortion occur in communication process for the sound wave of wave method seriously, and anti-interference is also bad；Signal as hyperfrequency method detects exists
Complicated inside switch cabinet can occur repeatedly to reflect, reflect etc., can make the signal received generation is prodigious decay, is abnormal
Become, and expensive, development is also immature；Easily being disturbed when pulse current method onsite application causes to judge by accident, transient state voltage-to-ground
It is unreliable to send out testing result.In addition, switchgear is usually more side-by-side uses, cause the electromagnetic signal of shelf depreciation mutual
Phase serious interference, electro-detection, ultrasound examination are difficult to realize.Comprehensive present result of study can see, now with it is single
Method cannot meet the needs of being detected to switchgear.
Invention content
The purpose of the present invention is overcoming the above-mentioned prior art, a kind of high-tension switch cabinet based on gas detection is provided
Fault monitoring device and monitoring method.The present invention detects failure by detecting the gas generated under discharging condition, may be implemented
Monitoring to internal faults of switch cabinet.It is excellent that there is the present invention accurate and reliable and monitoring device not influence switchgear normal operation etc.
Point, more switchgears using the present invention are side by side using will not generate mutually interference.
The present invention fault monitoring device include：Gas probe, gas piping, escape pipe, gas detecting instrument, normally closed electromagnetism
Valve, air pump, waste gas filter and message processing module.
High-tension switch cabinet includes that high pressure compartment includes bus-bar room, cable vault, control room, toolroom and handcart room 5.It is described
Gas probe have it is multiple, be separately mounted to bus-bar room, cable vault, handcart room inside, each high pressure compartment at least installs 1 gas
Body is popped one's head in., multiple gas probes acquire bus-bar room, cable vault and the indoor gas of handcart respectively.The multiple gas probe with
Multipath gas pipeline corresponds, and the both ends of gas piping are separately connected gas probe and escape pipe.The gas probe is preferred
The horn-type opening that for the benefit of gas enters is equipped with strainer on the gas probe, with prevent solid particulate matter enter pipeline and
Detecting instrument.The gas piping is arranged in high-tension switch cabinet inner wall.The gas probe, gas piping are insulating materials system
Make, and does not adsorb O3、NO、N2O、NO2、NO3、CO、N2O5Gas does not generate chemical reaction, preferably polytetrafluoro with these gases
Vinyl material.
It is respectively arranged with normally closed solenoid valve on multiple gas pipings.Multipath gas pipeline is finally combined into all the way in exit, and is gone out
Tracheae connects.
The normally closed solenoid valve is arranged close on the gas piping of escape pipe side.It is sequentially arranged with gas on the escape pipe
Body detector, air pump and waste gas filter.The flow velocity of the air pump need to ensure gas in gas probe import to gas detecting instrument
Between pipeline residence time be no more than 5s；The internal diameter of the gas piping makes gas be in laminar condition.When flowing through outlet
The gas component of detection in need in the gas of pipe, such as CO, O3、NO、N2O、NO2、NO3、N2O5When, gas detecting instrument generates sound
It answers, and testing result is transferred to message processing module.The gas detecting instrument is mounted on the air inlet side of air pump.
Described information processing module is controlled for receiving the monitoring result that gas detecting instrument obtains, failure judgement with higher level
System communication processed.
The waste gas filter goes out gas side mounted on air pump.
The gas of the escape pipe discharge is discharged into outside switchgear.
The normally closed solenoid valve is controlled by message processing module；Message processing module is gas detecting instrument, normally closed solenoid valve
Power supply and control signal are provided with air pump.
The escape pipe, gas detecting instrument, normally closed solenoid valve, air pump, waste gas filter, message processing module are mounted on and open
Close one of cabinet compartment --- inside toolroom.
The method that high-tension switch cabinet is monitored using above-mentioned fault monitoring device is as follows：
When work, the normally closed solenoid valve on each gas piping of message processing module partially unrolling is measured respectively from different gas
The collected gaseous sample of body probe.Gas enters gas piping, the gas that gas detecting instrument will detect by gas probe
Concentration data is transferred to message processing module, and the gas concentration that message processing module comparison different time measurement obtains judges height
It compresses switch and whether generates decomposition gas in cabinet.
The principle that the present invention detects failure is as follows：
In detection process, if only detecting O3Concentration changes, and persistently rises within a certain period of time, and NO, N2O、
NO2、NO3、CO、N2O5Gas component is substantially unchanged, then it is assumed that the low-intensity electric discharge for not being related to solid insulation only occurs；
If both detecting O3Concentration changes, and detects that CO concentration changes, while holding within a certain period of time
It is continuous to rise, then it can be confirmed and the low-intensity for being related to solid insulation electric discharge have occurred；
If both detecting O3Concentration changes, and detects NO, NO2、N2O、NO3、N2O5In at least one kind of concentration hair
Changing, while all lasting rising in addition to NO within a certain period of time, then can be confirmed and be not related to the high-strength of solid insulation
Degree electric discharge.
If both detecting O3Concentration changes, and detects NO, NO2、N2O、NO3、N2O5In it is at least one kind of, and
CO concentration changes, at the same it is all lasting in addition to NO within a certain period of time rise, then can be confirmed to have occurred and be related to solid insulation
High-intensity discharge.
It refers to when volumetric concentration is less than 30ppbv that the concentration, which changes, and concentration improves 20%；Concentration 30~
When between 60ppbv, concentration improves 6ppbv or more；When volumetric concentration is in 60ppbv or more, concentration improves 10%；But volume is dense
For degree in 500ppbv or more, concentration improves 5%.
According to the above method, gas probe is arranged to region more intensive more conducive to the generation of accurate judgement failure, but considers
The characteristics of to cost and each compartment opposing seal of switchgear, currently preferred arrangement be in each switchgear compartment
1 gas probe is at least arranged, to determine the compartment of shelf depreciation generation.
Have the following advantages that monitoring device is split using above-mentioned fault monitoring device and method monitoring high voltage switch cabinet fault
Closing the normal operation of cabinet does not influence, and structure is simple and easy to implement for simultaneity factor.
Description of the drawings
Fig. 1 is the schematic diagram of fault monitoring device embodiment 1 of the present invention；
Fig. 2 is the failure detector gas probe schematic diagram of the present invention.
Specific implementation mode
It is further illustrated the present invention below in conjunction with the drawings and specific embodiments.
Fig. 1 is the schematic diagram of the fault monitoring device embodiment 1 of the present invention.As shown in Figure 1, high-tension switch cabinet includes relay
Instruments and meters room 1, handcart room 2, cable vault 3, bus-bar room 4 and toolroom 5 totally 5 high pressure compartments.There is circuit breaker cart in handcart room 2
21, Grunding switch gear device 31 is installed in cable vault 3, there is current transformer 32 in bus-bar room 4.
The present invention fault monitoring device include：It is gas probe 6, gas piping 7, escape pipe 8, gas detecting instrument 9, normally closed
Solenoid valve 11, air pump 10, waste gas filter 12 and message processing module 51.
Gas probe 6 can be installed multiple, and the present embodiment is equipped with 3, is separately positioned on cable vault 3, handcart room 2 and mother
Line room 4 detects respectively every indoor gas component.Multiple gas probes 6 are connected with multiple corresponding gas pipings 7, gas piping 7
It merges into all the way after exporting to toolroom 5, is connect with escape pipe 8.Air pump 10 and waste gas filter 12 are housed on escape pipe 8.Often
A gas piping 7 is equipped with normally closed solenoid valve 11 close to the side of escape pipe 8.
The air inlet side of air pump 10 is equipped with gas detecting instrument 9, is used for detection gas component and content.The flow velocity of air pump 10 is protected
Hinder gas and is no more than 5s from 6 import of gas probe to the residence time in gas detecting instrument 9；The internal diameter of the gas piping 7 makes
It obtains gas and is in laminar condition.Waste gas filter 12 goes out mounted on air pump 10 on the escape pipe 8 of gas side.Gas piping 7 is along high pressure
The insulating barrier or tank wall inner wall of inside switch cabinet are arranged.Message processing module 51 is arranged in toolroom 5, is examined respectively with gas
Instrument 9, air pump 10 and normally closed solenoid valve 11 is surveyed to be connected.
Fig. 2 is the fault monitoring device gas probe schematic diagram of the present invention, as shown in Fig. 2, the lower end of gas probe 6 is loudspeaker
Type opening 61, strainer 62 is equipped on horn-type opening 61.
Claims (5)
1. a kind of high voltage switch cabinet fault monitoring device, it is characterised in that：The fault monitoring device includes gas probe
(6), gas piping (7), gas detecting instrument (9), air pump (10), escape pipe (8), normally closed solenoid valve (11), waste gas filter
(12) and message processing module (51)；Multiple gas probes (6) be separately mounted to high-tension switch cabinet bus-bar room (4),
(2) three cable vault (3), handcart room compartment interiors, each compartment at least install 1；Multiple gas probes (6) and multiple gases
Pipeline (7) corresponds；The both ends of the gas piping (7) connect gas probe (6) and escape pipe (8) respectively；The gas
The opening of probe (6) is equipped with strainer (62)；The gas piping (7) is arranged along high-tension switch cabinet inner wall；
Normally closed solenoid valve (11) is housed, the gas piping (7) is combined into all the way in exit, and goes out on the gas piping (7)
Tracheae (8) connects；Gas detecting instrument (9), air pump (10) and waste gas filter (12) are sequentially arranged on the escape pipe (8)；Institute
The flow velocity for stating air pump (10) ensures that gas is no more than 5s from gas probe (6) import to the residence time in gas detecting instrument (9)；
The internal diameter of the gas piping (7) makes gas be in laminar condition；The gas detecting instrument (9) be mounted on air pump (10) into
Gas side；The waste gas filter (12) goes out gas side mounted on air pump (10)；The gas of residing escape pipe (8) discharge is emitted on height
It compresses switch outside cabinet；The normally closed solenoid valve (11) is controlled by message processing module (51)；The gas detecting instrument (9) will be detected
As a result it is transferred to message processing module (51), message processing module (51) receives the measurement result that gas detecting instrument (9) obtains, sentences
Disconnected failure is simultaneously communicated with higher level's control system, and provides electricity for gas detecting instrument (9), normally closed solenoid valve (11) and air pump (10)
Source；The escape pipe (8), gas detecting instrument (9), air pump (10), normally closed solenoid valve (11), waste gas filter (12) are arranged in height
Compress switch cabinet toolroom (5) it is internal.
2. high voltage switch cabinet fault monitoring device described in accordance with the claim 1, it is characterised in that the gas probe (6) is loudspeaker
Type is open (61).
3. high voltage switch cabinet fault monitoring device described in accordance with the claim 1, it is characterised in that：The gas probe (6)
It is that insulating materials makes, and does not adsorb O with gas piping (7)3、NO、N2O、NO2、NO3、CO、N2O5Gas, not with these gas
Body generates chemical reaction.
4. high voltage switch cabinet fault monitoring device described in accordance with the claim 1, it is characterised in that：The gas probe (6)
It is made with gas piping (7) preferably polytetrafluoroethylene material.
5. high voltage switch cabinet fault monitoring device described in accordance with the claim 1, it is characterised in that：Described information processing module
(51) normally closed solenoid valve (11) partially unrolling or closure on each gas piping (7) are controlled, corresponding gas piping (7) is connected,
Gas enters gas piping (7) from gas probe (6), and enters escape pipe (8)；Gas detecting instrument (9) measures gas component；Gas
The gas concentration detected is transferred to message processing module (51) by body detector (9), and message processing module (51) compares each time
The gas concentration of measurement judges whether to generate and decomposes gas；
In detection process, if only detecting O3Concentration changes, and persistently rises within a certain period of time, and NO, N2O、NO2、
NO3、CO、N2O5Gas component is substantially unchanged, then it is assumed that the low-intensity electric discharge for not being related to solid insulation only occurs；
If both detecting O3Concentration changes, and detects that CO concentration changes, while on continuing within a certain period of time
It rises, then can be confirmed and the low-intensity for being related to solid insulation electric discharge has occurred；
If both detecting O3Concentration changes, and detects NO, NO2、N2O、NO3、N2O5In at least one kind of concentration occur
Variation, while all lasting rising in addition to NO within a certain period of time, then can be confirmed the high intensity for not being related to solid insulation
Electric discharge；
If both detecting O3Concentration changes, and detects NO, NO2、N2O、NO3、N2O5In at least one kind of and CO it is dense
Degree changes, while all lasting rising in addition to NO within a certain period of time, then can be confirmed and the height for being related to solid insulation has occurred
Intensity-discharge；
The concentration changes finger when volumetric concentration is less than 30ppbv, and concentration improves 20%；Concentration 30~60ppbv it
Between when, concentration improve 6ppbv or more；When volumetric concentration is in 60ppbv or more, concentration improves 10%；But volumetric concentration exists
When 500ppbv or more, concentration improves 5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610585779.7A CN106291272B (en) | 2016-07-22 | 2016-07-22 | A kind of high voltage switch cabinet fault monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610585779.7A CN106291272B (en) | 2016-07-22 | 2016-07-22 | A kind of high voltage switch cabinet fault monitoring device |
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| Publication Number | Publication Date |
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| CN106291272A CN106291272A (en) | 2017-01-04 |
| CN106291272B true CN106291272B (en) | 2018-10-16 |
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| CN201610585779.7A Active CN106291272B (en) | 2016-07-22 | 2016-07-22 | A kind of high voltage switch cabinet fault monitoring device |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109085478B (en) * | 2018-09-27 | 2021-05-04 | 国网浙江省电力有限公司湖州供电公司 | Electrochemical method-based switch cabinet partial discharge detection device and control method |
| CN110187244B (en) * | 2019-04-30 | 2021-08-17 | 国网山西省电力公司电力科学研究院 | Fault detection device and method for switch cabinet |
| CN114618058B (en) * | 2022-03-11 | 2024-05-07 | 杭州时光机智能电子科技有限公司 | Gas pressure control method, system and equipment for beauty instrument |
| CN115199947B (en) * | 2022-07-20 | 2023-04-07 | 江苏康盛电气集团有限责任公司 | Fault monitoring device and method for high-voltage power distribution cabinet |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0230672B2 (en) * | 1982-12-08 | 1990-07-09 | Hitachi Cable | KINZOKUSHIISUTSUKIKAKYOHORIECHIRENZETSUENDENRYOKUKEEBURUNIOKERUBUBUNHODENNOBUIOSUITEISURUHOHO |
| CN103149324A (en) * | 2013-01-29 | 2013-06-12 | 温州电力局 | Method and device for high-tension switch cabinet gas detection |
| CN104849414B (en) * | 2015-06-03 | 2016-06-22 | 国网山东省电力公司巨野县供电公司 | System for distribution network of power high-tension switch cabinet monitoring method and device |
| CN105548838B (en) * | 2015-12-15 | 2018-10-12 | 海南电力技术研究院 | The method for diagnosing switchgear insulation defect |
| CN105589017B (en) * | 2015-12-15 | 2017-09-12 | 国家电网公司 | A kind of switch cubicle interior insulation part failure prediction method of feature based gas detection |
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