CN109559872A - Transformer capsule-type conservator with pressure compensation and its control monitoring method - Google Patents
Transformer capsule-type conservator with pressure compensation and its control monitoring method Download PDFInfo
- Publication number
- CN109559872A CN109559872A CN201811570993.0A CN201811570993A CN109559872A CN 109559872 A CN109559872 A CN 109559872A CN 201811570993 A CN201811570993 A CN 201811570993A CN 109559872 A CN109559872 A CN 109559872A
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- Prior art keywords
- pressure
- capsule
- oil level
- air compressor
- transformer
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Classifications
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- 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
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/12—Oil cooling
- H01F27/14—Expansion chambers; Oil conservators; Gas cushions; Arrangements for purifying, drying, or filling
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/08—Means for indicating or recording, e.g. for remote indication
- G01L19/12—Alarms or signals
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The present invention provides the transformer capsule-type conservator with pressure compensation and its control monitoring method, including shell, capsule is provided in shell, capsule top connects main pipeline, main pipeline is provided with non-return valve, main pipeline end setting dehydrating breather is communicated with outside atmosphere, and air compressor is arranged between non-return valve and dehydrating breather；T connects secondary duct between capsule and non-return valve, installs pressure sensor and pressure limiting valve.Realize that air compressor supplement air into capsule, non-return valve pressure maintaining, pressure limiting valve prevent the pressure of hypertonia from controlling and abnormal conditions monitoring function by monitoring capsule pressure, oil pillow oil level and compressor operating time, so that capsule is kept constant pressure, compensates the pressure difference between bushing and conservator.To make bushing end oil pressure be in barotropic state, moisture is effectively prevent to enter inside bushing；There to be oily exudation, when bushing end part seal is bad convenient for patrolling dimension personnel inspection；And permeability, heat dissipation problem can be monitored, promote transformer station high-voltage side bus reliability.
Description
Technical field
The present invention relates to field transformer more particularly to a kind of transformer capsule-type conservator with pressure compensation and its
Control monitoring method.
Background technique
Transformer is the key equipment in power grid, and operational reliability is larger to electric network influencing.In power grid, transformer glue
Bellows conservator use is more universal.For general conservator because of security considerations such as clearances, height can be lower than transformer high-voltage bushing 1-
4m.Capsule is connected by dehydrating breather with ambient atmosphere in conservator.In oily expanded by heating, capsule is breathed out internal by dehydrating breather
Air.In oily cooling meat, capsule sucks dry air by dehydrating breather.To play benefit by the respiration of capsule
Repay the volume change that volume change occurs with temperature for transformer oil.
In operation, the high-pressure side Zeng Fasheng cannula tip poor sealing causes moisture under conducting rod or cable to transformer
It seeps, into inside transformer, eventually leads to inside transformer insulation fault and out of service, seriously affect the safety warp of transformer
Ji operation.The reason of by analysis cannula tip infiltration, be on the one hand that cannula tip mounting process is bad or sealing ring aging is led
It causes.It on the other hand is to cause bushing end part seal to be chronically at negative because the height of bushing end is greater than conservator height
Pressure condition easily leads to poor sealing and moisture sucking.
When there is end part seal unfavorable condition, external rainwater, humid air etc. are easily inhaled into the casing in negative pressure
In end.It, also can be because of transformer oil when casing and conservator reach oil pressure dynamic balance again after cannula tip sealing is destroyed
Rising-heat contracting-cold generates respiration in collar cavities, persistently outside moisture is caused to enter in bushing.When bushing end
When portion's poor sealing, because cannula tip is higher than conservator, transformer oil will not ooze out, and operations staff sends out in advance without detection means at present
Existing cannula tip poor sealing.It is therefore desirable to the working conditions for being chronically at negative pressure to bushing end to improve.
Summary of the invention
The present invention provides a kind of transformer capsule-type conservator with pressure compensation and its control monitoring method, to solve
Negative pressure problem inside transformer high-voltage bushing.
In a first aspect, a kind of transformer capsule-type conservator with pressure compensation provided by the invention, comprising:
Shell, capsule is provided in the shell, and the capsule top end opening is connected with main pipeline, the main pipeline setting
There is non-return valve, the end of the main pipeline is provided with dehydrating breather and communicates with atmosphere, the master between the non-return valve and dehydrating breather
Pipeline is provided with air compressor；
Main pipeline T between the capsule and non-return valve is connected to secondary duct, and limited valve, the pair is arranged in the secondary duct
Pipe end is connected with tail pipe and communicates with atmosphere；
Capsule side is provided with pressure sensor in the pressure limiting valve, shell is provided with oil level gauge；
Monitoring system, the monitoring system are electrically connected with pressure sensor, oil level gauge and air compressor, the monitoring system
Numerical value, the numerical value of oil level gauge and the working time of air compressor of system monitoring pressure sensor, air compressor start and stop are controlled,
And warning message is exported when abnormal.
Second aspect, the present invention provide the control for using transformer capsule-type conservator of the first aspect with pressure compensation
Monitoring method, air compressor start-up and shut-down control include:
The pressure P in capsule is obtained by monitoring pressure sensor, oil pillow oil level K is obtained by oil level gauge, monitors air
The working time T of compressor, the vertical height according to bushing top and conservator medium position calculates pressure value p, and presses
1.5 multiplying factors calculate Pn=1.5*p sets in capsule normal pressure value as PnIf the scale of oil level gauge was 10 quarters when full oil level
Degree；
As P < 0.8*PnWhen, air compressor is started to work, as P > PnWhen, air compressor stops working.
Further, warning message is exported when abnormal includes:
When air compressor work when, if pressure P does not increase with compressor operating time T, oil level K maintain stablize and
The scale of oil level K >=2 is then judged as that abnormal pipeline gas leakage, non-return valve, air compressor exception or pressure limiting valve are abnormal, output alarm
Information, reply pipeline gas leakage, non-return valve, air compressor or pressure limiting valve further check；
When air compressor work, if pressure P does not increase with compressor operating time T, oil level K is at any time under T
Drop is then judged as transformer oil leak, exports warning message, should check transformer leakage of oil situation；
When oil level K 2 scale of <, then it is judged as transformer oil level exception, exports warning message, should checks that transformer leaks
Oily situation；
When oil level K 8 scale of >, then it is judged as transformer oil level exception, exports warning message, should checks that transformer radiates
It is whether normal.
A kind of transformer capsule-type conservator with pressure compensation provided by the invention and its control monitoring method, pass through
Capsule pressure, oil pillow oil level and compressor operating time are monitored, realizes that air compressor supplements air into capsule, non-return valve is protected
Pressure, pressure limiting valve prevent pressure control and the abnormal conditions monitoring function of hypertonia, so that capsule is kept constant pressure, to compensate
Pressure difference between bushing and conservator.To make bushing end oil pressure be in barotropic state, moisture is effectively prevent to enter
Inside bushing；There to be oily exudation, when bushing end part seal is bad convenient for patrolling dimension personnel inspection；And infiltration can be monitored
Oil, heat dissipation problem promote transformer station high-voltage side bus reliability.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the transformer capsule-type conservator provided in an embodiment of the present invention with pressure compensation；
Fig. 2 is monitoring system provided in an embodiment of the present invention and its connection relationship diagram.
Figure label indicates:
1- shell, 2- capsule, 3- main pipeline, 4- secondary duct, 5- non-return valve, 6- air compressor, 7- dehydrating breather, 8- pressure limiting
Valve, 9- tail pipe, 10- floating ball, 11- connecting rod, 12- oil level gauge, 13- oil pipeline, 14- pressure sensor, 15- processor, 16- report
Alert device, 17- display, 18- timer.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples.
Referring to Fig. 1, show for the structure of the transformer capsule-type conservator provided in an embodiment of the present invention with pressure compensation
It is intended to, which includes:
Shell 1 is provided with capsule 2 in shell 1, and 2 top end opening of capsule is connected with main pipeline 3, and main pipeline 3 is provided with check
Valve 5, the end of main pipeline 3 are provided with dehydrating breather 7 and communicate with atmosphere, and the main pipeline 3 between non-return valve 5 and dehydrating breather 7 is arranged
There is air compressor 6.
Fill transformer oil inside shell 1,1 bottom of shell is communicated with oil pipeline 13, in oil pipeline 13 and transformer
Portion's connection.
Filling gas in capsule 2 is varied with temperature by the expansion or shrinkage compensator transformer internal transformer oil of capsule 2
The volume change of generation, to make transformer oil and isolated from atmosphere.
After dehydrating breather 7 will be air-dried, air compressor 6 passes through non-return valve 5 after compressing dry air and is delivered to capsule 2
In, it is poor to supplement the pressure at right angle between transformer high-voltage bushing and conservator, meanwhile, the gas inside capsule 2 is made by non-return valve 5
Pressure is maintained.
Main pipeline 3T between capsule 2 and non-return valve 5 is connected to secondary duct 4, and limited valve 8, secondary duct 4 is arranged in secondary duct 4
End is connected with tail pipe 9 and communicates with atmosphere.
Secondary duct 4 and pressure limiting valve 8 are used to prevent the hypertonia in capsule 2, and the side of pressure limiting valve 8 connects secondary duct 4, separately
Side is connected with tail pipe 9, and tail pipe 9 can prevent the undesirable elements such as extraneous moisture from corroding pressure limiting valve 8, guarantee 8 work of pressure limiting valve with this
The reliability of work.
2 side of capsule is provided with pressure sensor 14 in pressure limiting valve 8, the air pressure being used to indicate in capsule 2.
Floating ball 10 is provided in shell 1, outside capsule 2, floating ball 10 connects one end of a connecting rod 11, and the other end of connecting rod 11 connects
It is connected to oil level gauge 12, the oil level being used to indicate in shell 1.
Monitoring system, the monitoring system is electrically connected with pressure sensor 14, oil level gauge 12 and air compressor 6, described
Numerical value, the numerical value of oil level gauge 12 and the working time of air compressor 6 of system monitoring pressure sensor 14 are monitored, air is controlled
6 start and stop of compressor, and warning message is exported when exception.
The application provides a kind of control and monitoring system and its connection relationship embodiment, schematic diagram referring to fig. 2, the monitoring system
System may include: processor 15, alarm 16, display 17 and timer 18.
Processor 15 respectively with pressure sensor 14, oil level gauge 12, air compressor 6, alarm 16, display 17 and
Timer 18 is electrically connected, and timer 18 is electrically connected with air compressor 6.
Pressure sensor 14 monitors the pressure in capsule 2, and pressure value is transmitted to processor 15.The oil level number of oil level gauge 12
Processor 15 is transmitted to when factually.Timer 18 records the working time of air compressor 6, and time data are transmitted to processor
15.Processor 15 obtains pressure value and oil level data, is adjusted according to pressure of the preset normal pressure value to capsule 2, controls
6 start and stop of air compressor processed in capsule 2 to inflating.When there are abnormal conditions, abnormal state information is transmitted to by processor 15
Display 17, which is displayed for patrolling dimension personnel, to be checked, meanwhile, control alarm 16 issues audible and visible alarm, and dimension personnel are patrolled in prompting.
The control monitoring method of the above-mentioned transformer capsule-type conservator using this with pressure compensation, wherein air pressure
Contracting machine start-up and shut-down control specifically includes:
The pressure P in capsule 2 is obtained by monitoring pressure sensor 14, oil pillow oil level K, monitoring are obtained by oil level gauge 12
Compressor operating time T, the vertical height according to bushing top and conservator medium position calculates pressure value p, and presses 1.5
Multiplying factor calculates Pn=1.5*p sets in capsule 2 normal pressure value as PnIf the scale of oil level gauge 12 was 10 quarters when full oil level
Degree.
As P < 0.8*PnWhen, air compressor 6 is started to work, as P > PnWhen, air compressor 6 stops working.
As P > 1.1*PnWhen, pressure limiting valve 8 acts, as P≤1.05*PnWhen, 8 involution of pressure limiting valve.
Warning message is exported when abnormal includes:
When air compressor 6 works, if pressure P does not increase with compressor operating time T, oil level K maintains to stablize
And the scale of oil level K >=2, then it is judged as that abnormal pipeline gas leakage, non-return valve 5,6 exception of air compressor or pressure limiting valve 8 are abnormal, output
Warning message, reply pipeline gas leakage, non-return valve 5, air compressor 6 or pressure limiting valve 8 further check.
When air compressor 6 works, if pressure P does not increase with compressor operating time T, oil level K is at any time under T
Drop is then judged as transformer oil leak, exports warning message, should check transformer leakage of oil situation.
When oil level K 2 scale of <, then it is judged as transformer oil level exception, exports warning message, should checks that transformer leaks
Oily situation.
When oil level K 8 scale of >, then it is judged as transformer oil level exception, exports warning message, should checks that transformer radiates
It is whether normal.
The specific embodiment of invention described above is not intended to limit the scope of the present invention..
Claims (3)
1. a kind of transformer capsule-type conservator with pressure compensation characterized by comprising
Shell (1), the shell (1) is interior to be provided with capsule (2), and capsule (2) top end opening is connected with main pipeline (3), institute
It states main pipeline (3) to be provided with non-return valve (5), the end of the main pipeline (3) is provided with dehydrating breather (7) and communicates with atmosphere, institute
The main pipeline (3) stated between non-return valve (5) and dehydrating breather (7) is provided with air compressor (6)；
Main pipeline (3) T between the capsule (2) and non-return valve (5) is connected to secondary duct (4), and secondary duct (4) setting is limited
Pressure valve (8), secondary duct (4) end are connected with tail pipe (9) and communicate with atmosphere；
It is provided with pressure sensor (14) in the pressure limiting valve (8) close to capsule (2) side, shell (1) is provided with oil level gauge (12)；
Monitoring system, the monitoring system are electrically connected with pressure sensor (14), oil level gauge (12) and air compressor (6), institute
Numerical value, the numerical value of oil level gauge (12) and the working time of air compressor (6) of monitoring system monitoring pressure sensor (14) are stated,
Air compressor (6) start and stop are controlled, and export warning message when exception.
2. a kind of control monitoring method of the transformer capsule-type conservator described in claim 1 with pressure compensation, special
Sign is that air compressor (6) start-up and shut-down control includes:
The pressure P in capsule (2) is obtained by monitoring pressure sensor (14), obtains oil pillow oil level K, prison by oil level gauge (12)
The working time T for surveying air compressor (6), the vertical height according to bushing top and conservator medium position calculate pressure
Value p, and P is calculated by 1.5 multiplying factorsn=1.5*p sets capsule (2) interior normal pressure value as PnIf oil level gauge when full oil level
(12) scale is 10 scales；
As P < 0.8*PnWhen, air compressor (6) is started to work, as P > PnWhen, air compressor (6) stops working.
3. the control monitoring method of the transformer capsule-type conservator according to claim 2 with pressure compensation, special
Sign is that warning message is exported when abnormal includes:
When air compressor (6) work when, if pressure P does not increase with compressor operating time T, oil level K maintain stablize and
The scale of oil level K >=2 is then judged as that abnormal pipeline gas leakage, non-return valve (5), air compressor (6) exception or pressure limiting valve (8) are abnormal,
Warning message is exported, reply pipeline gas leakage, non-return valve (5), air compressor (6) or pressure limiting valve (8) further check；
When air compressor (6) work, if pressure P does not increase with compressor operating time T, oil level K is at any time under T
Drop is then judged as transformer oil leak, exports warning message, should check transformer leakage of oil situation；
When oil level K 2 scale of <, then it is judged as transformer oil level exception, exports warning message, should check transformer leakage of oil feelings
Condition；
When oil level K 8 scale of >, then it is judged as transformer oil level exception, exports warning message, whether should checks transformer heat dissipation
Normally.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811570993.0A CN109559872B (en) | 2018-12-21 | 2018-12-21 | Transformer capsule type oil conservator with pressure compensation function and control monitoring method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811570993.0A CN109559872B (en) | 2018-12-21 | 2018-12-21 | Transformer capsule type oil conservator with pressure compensation function and control monitoring method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109559872A true CN109559872A (en) | 2019-04-02 |
| CN109559872B CN109559872B (en) | 2021-02-05 |
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ID=65870796
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811570993.0A Active CN109559872B (en) | 2018-12-21 | 2018-12-21 | Transformer capsule type oil conservator with pressure compensation function and control monitoring method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110146235A (en) * | 2019-05-27 | 2019-08-20 | 国网冀北电力有限公司廊坊供电公司 | Transformer suppresses leak test dedicated unit and suppresses leak test test method |
| CN110906160A (en) * | 2019-11-27 | 2020-03-24 | 云南电网有限责任公司昆明供电局 | Oil-immersed transformer pillow type capsule automatic inflation device |
| CN112697195A (en) * | 2020-11-12 | 2021-04-23 | 珠海一多智能科技有限公司 | High-voltage bushing load air pressure temperature on-line monitoring and diagnosis method |
| CN112885572A (en) * | 2021-03-22 | 2021-06-01 | 保定天威保变电气股份有限公司 | Transformer oil storage system and method capable of placing oil conservator at any height |
| CN115060413A (en) * | 2022-04-15 | 2022-09-16 | 广东电网有限责任公司广州供电局 | Transformer and gas monitoring and controlling method thereof |
| CN115193824A (en) * | 2022-07-04 | 2022-10-18 | 中国联合重型燃气轮机技术有限公司 | Compressor blade cleaning system |
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| CN103440962A (en) * | 2013-08-01 | 2013-12-11 | 国家电网公司 | Intelligent on-line oil filling vehicle for transformer and oil filling method |
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| CN205159045U (en) * | 2015-11-24 | 2016-04-13 | 天津双沽机电设备有限公司 | Oil conservator of oil immersed type transformer |
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| JPH09266117A (en) * | 1996-03-28 | 1997-10-07 | Toshiba Fa Syst Eng Kk | Oil-immersed electric machine and oiling method for oil-immersed electric machine |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110146235A (en) * | 2019-05-27 | 2019-08-20 | 国网冀北电力有限公司廊坊供电公司 | Transformer suppresses leak test dedicated unit and suppresses leak test test method |
| CN110906160A (en) * | 2019-11-27 | 2020-03-24 | 云南电网有限责任公司昆明供电局 | Oil-immersed transformer pillow type capsule automatic inflation device |
| CN112697195A (en) * | 2020-11-12 | 2021-04-23 | 珠海一多智能科技有限公司 | High-voltage bushing load air pressure temperature on-line monitoring and diagnosis method |
| CN112697195B (en) * | 2020-11-12 | 2024-06-04 | 珠海一多智能科技有限公司 | High-voltage sleeve load air pressure and temperature on-line monitoring and diagnosing method |
| CN112885572A (en) * | 2021-03-22 | 2021-06-01 | 保定天威保变电气股份有限公司 | Transformer oil storage system and method capable of placing oil conservator at any height |
| CN115060413A (en) * | 2022-04-15 | 2022-09-16 | 广东电网有限责任公司广州供电局 | Transformer and gas monitoring and controlling method thereof |
| CN115193824A (en) * | 2022-07-04 | 2022-10-18 | 中国联合重型燃气轮机技术有限公司 | Compressor blade cleaning system |
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