CN107576443A - Pressure on-line monitoring system for 750kV high-tension insulating bushings - Google Patents
Pressure on-line monitoring system for 750kV high-tension insulating bushings Download PDFInfo
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- CN107576443A CN107576443A CN201710945536.4A CN201710945536A CN107576443A CN 107576443 A CN107576443 A CN 107576443A CN 201710945536 A CN201710945536 A CN 201710945536A CN 107576443 A CN107576443 A CN 107576443A
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Abstract
The invention discloses a kind of pressure on-line monitoring system for 750kV high-tension insulating bushings, and it includes fuel outlet that is being arranged on high-tension insulating bushing bottom sides and being connected with high-tension insulating bushing inside；One threeway is installed on the fuel outlet；One entrance of threeway is connected with the fuel outlet, is separately installed with pressure transmitter in two outlets of threeway and is drawn down-sampling pipe；Draw down-sampling pipe to extend downwardly, and draw the end installation Sampler valves of down-sampling pipe；It is provided with the threeway and exports the switch valve being respectively turned on for switching entrance and two；The signal of the pressure transmitter is communicated by communication module and in-site collecting device；The in-site collecting device is communicated by communication device and background computer；The in-site collecting device includes controller, display, alarm and the wireless communication module for being communicated with background computer；The controller is connected with the display, alarm and wireless communication module.
Description
Technical field
The present invention relates to the pressure on-line monitoring system of 750kV high-tension insulating bushings, specifically for 750kV high-pressure insulating rings
The pressure monitor of fluid inside pipe.
Background technology
Bushing for transformer is the important component of transformer, and inside transformer high and low pressure lead is guided to oil by it
Outside case, both insulation against ground as lead, the effect of anchor leg is also played.Therefore, it must have defined electric
Intensity and enough mechanical strengths.Bushing for transformer is also one of transformer current carrying element simultaneously, it is necessary to have good
Heat endurance, long-term fever caused by operating current and moment mistake when passing through short circuit current when can bear transformer normal operation
Heat.If bushing for transformer existing defects break down, it will directly jeopardize the safe and stable operation of transformer.If absolutely
Edge sleeve pipe breaks down, and medium temperature will raise, and oil pressure will produce change (physics law for meeting mechanics) therewith, so
Install the pressure change that insulation oil pressure on-line monitoring will directly inside consersion unit additional in insulating sleeve end, be operations staff
The pressure medium periodic data support of equipment is provided, facilitates maintainer to prejudge the failure of high-tension insulating bushing.
In actual motion, there is Decrepitation Phenomena on 750kV high-tension insulating bushings, rupture reasons are oil by analysis
Hydrogen content and acetylene content increase in liquid；Therefore, in order to avoid explosion, the fluid in high-tension insulating bushing is regularly taken to make
Detected for oil sample, this process is very passive, it is necessary to have a power failure, it is necessary to the substantial amounts of working time；
By our analyses to the actual process that bursts, discovery bursts early stage, pressure and temperature inside high-tension insulating bushing
Degree can raise, the discovery defect that this elevation process can be very instant if being monitored, and eliminate defect.
The content of the invention
It is used in view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is that providing one kind
The pressure on-line monitoring system of 750kV high-tension insulating bushings, it can monitor the oil liquid pressure inside high-tension insulating bushing in real time,
Immediately defect is found, eliminates defect, while also with very easily oil sample gathers structure.
In order to achieve the above object, the present invention is achieved using following technical scheme：
For the pressure on-line monitoring system of 750kV high-tension insulating bushings, fluid is filled with inside high-tension insulating bushing, is wrapped
Containing fuel outlet that is being arranged on high-tension insulating bushing bottom sides and being connected with high-tension insulating bushing inside；Pacify on the fuel outlet
Fill a threeway；One entrance of threeway is connected with the fuel outlet, and pressure inverting is separately installed with two outlets of threeway
Device and draw down-sampling pipe；Draw down-sampling pipe to extend downwardly, and draw the end installation Sampler valves of down-sampling pipe；
It is provided with the threeway and exports the switch valve being respectively turned on for switching entrance and two；
The signal of the pressure transmitter is communicated by communication module and in-site collecting device；
The in-site collecting device is communicated by communication device and background computer；
The in-site collecting device includes controller, display, alarm and the channel radio for being communicated with background computer
Interrogate module；The controller is connected with the display, alarm and wireless communication module；The in-site collecting device is also associated with
Power module；The in-site collecting device is also comprising the environment temperature sensor and ambient humidity sensor being connected with controller.
A kind of preferred embodiment as the present invention：Top grading shield is provided with the top of the high-tension insulating bushing,
Fluid is filled with the grading shield of top, liquid level gauge is installed on the top grading shield；The housing side of the liquid level gauge opens up
There is the sleeve pipe for assembling wireless pressure transmitter；The wireless pressure transmitter and the in-site collecting device wireless telecommunications.
A kind of preferred embodiment as the present invention：The wireless pressure transmitter, pressure transmitter include shell,
The bottom of shell sets joint, and the inside of shell is provided with wiring board and binding post, communication module, temperature are connected on wiring board
And pressure signal processing module, power supply；The joint is built with pressure sensor and temperature sensor；The pressure sensor,
Temperature sensor is connected by wiring board with temperature and pressure signal processing module；
The communication module of the wireless pressure transmitter is the communication module of wireless telecommunications；The communication of the pressure transmitter
Module is the communication module of wireless telecommunications or wire communication；The wireless pressure transmitter is provided with antenna, antenna on shell
Connect with binding post；The power supply of the wireless pressure transmitter is the battery covered after shell.
A kind of preferred embodiment as the present invention：The wireless pressure transmitter, pressure transmitter, which also include, to be set
The dial plate on shell is put, display window is provided with dial plate, corresponding, the wiring board is also associated with display module.
A kind of preferred embodiment as the present invention：The switch valve is motor-driven valve；The control mould of the motor-driven valve
Block is connected with the controller of in-site collecting device；
Or the switch valve is hand-operated valve, and rotating mark is provided with the valve handle of the hand-operated valve.
A kind of preferred embodiment as the present invention：The in-site collecting device includes casing and case lid, and bottom half is set
Put the lead-in line joint for penetrating inlet wire and the outlet joint for passing outlet；The tank surface be provided with main display,
Switch, environment temperature display screen and ambient humidity display screen；The environment temperature display screen and ambient humidity display screen are number
Image tube display screen；The casing top sets radio transmission antenna；The alarm is audible-visual annunciator；The in-site collecting
Device includes 1 road moisture signal, 1 road temperature signal；2 tunnel alarm signals；The remote transfer signal of 1 tunnel 485；The alarm is sound and light alarm
Device；Wireless communication module is wirelessly transferred using 433MHz zigbee.
A kind of preferred embodiment as the present invention：The controller of the in-site collecting device include amplification circuit module,
Arm processor, digital analog converter, voltage current adapter and electric current galvanostat；Controller is by ambient pressure sensor, ring
The signal that border humidity sensor transmits carries out signal amplification by built-in amplification circuit module, and the signal after amplification passes through described
Arm processor is calculated；The signal data being calculated is converted into voltage signal by digital analog converter, then passes through
The voltage current adapter changes into current signal, and current signal passes through the communication after electric current galvanostat by in-site collecting device
Module transfer.
A kind of preferred embodiment as the present invention：The pressure transmitter uses range, and for 0~0.5MPa, precision is
0.1 grade, absolute pressure transducer of the temperature at -40~80 degree；The casing of the in-site collecting device is water-proof type cast aluminium cabinet.
A kind of preferred embodiment as the present invention：The connecting line of the pressure transmitter and in-site collecting device is iron fluorine
Imperial lead；The antenna of the wireless pressure transmitter is Teflon antenna.
Present invention has the advantages that：
Pressure on-line monitoring system disclosed by the invention for 750kV high-tension insulating bushings, it is exhausted comprising high pressure is arranged on
Edge sleeve bottom side and with the fuel outlet that connects inside high-tension insulating bushing；One threeway is installed on the fuel outlet；Three
A logical entrance is connected with the fuel outlet, is separately installed with pressure transmitter in two outlets of threeway and is drawn down-sampling
Pipe；Draw down-sampling pipe to extend downwardly, and draw the end installation Sampler valves of down-sampling pipe；Pressure transmitter is used to gather pressure letter
Number, pressure signal is then transferred to in-site collecting device；In-site collecting device carries out live display, alarm and to background computer
Transmission；Background computer is located at the Control Room of transformer station；Therefore, whole pressure monitor is real time and on line monitoring, it is very useful just
It is prompt so that defect early stage finds immediately；The setting for drawing down-sampling pipe and Sampler valves causes fluid collection position positioned at relatively low
Position so that fluid collection is more convenient.
The in-site collecting device of the present invention includes controller, display, alarm and the nothing for being communicated with background computer
Line communication module；The controller is connected with the display, alarm and wireless communication module；The in-site collecting device also connects
It is connected to power module；The in-site collecting device is also comprising the environment temperature sensor being connected with controller and ambient humidity sensing
Device；In-site collecting device can carry out relay transmission, while also monitor the temperature and humidity at scene, there is provided comprehensive monitoring letter
Breath；
To sum up, the present invention can monitor the pressure in insulating sleeve in real time, can be sent out with the very first time by pressure change
Existing defect, avoids further endangering；The present invention can also relatively low position (in general, fuel outlet be located at 4 meters of ground with
On, sampling valve can accomplish the position consistent with operating personnel's height on ground by drawing down-sampling pipe) carry out oil sample collection；Cause
This, there is effective and positive value in the present invention in the potential safety hazard for monitoring and preventing 750kV high-pressure insulating ring pipe explosions.
Brief description of the drawings
Fig. 1 is a kind of overall structure diagram of embodiment of the present invention；
Fig. 2 is partial enlarged drawing at Fig. 1 A；
Fig. 3 is a kind of structural representation of preferred embodiment on the insulating sleeve top of the present invention；
Fig. 4 is a kind of structural representation of embodiment of the in-site collecting device of the present invention；
Fig. 5 is a kind of schematic block circuit diagram of embodiment of the in-site collecting device of the present invention；
Fig. 6 is a kind of structural representation of embodiment of the pressure transmitter of the present invention；
Fig. 7 is a kind of schematic block circuit diagram of embodiment of the pressure transmitter of the present invention.
Description of reference numerals：
1- insulating sleeves, 2- fuel outlets, 3- pressure transmitters, 4- threeways, 5- draw down-sampling pipe, and 6- Sampler valves, 7- is just
Ground collector, 8- communication devices, 9- background computers, 10- switch valves, 11- tops grading shield, 12- liquid level gauges, 13- is wireless
Pressure transmitter, 14- extraction wires；
301- shells, 302- dial plates, 303- joints, 304- pressure sensors, 305- temperature sensors, 306- antennas,
307- communication modules, 308- binding posts, 309- power supplys, 310- wiring boards, 311- display modules, at 312- temperature, pressure signals
Manage module；
701- case lids, 702- casings, 703- switches, 704- environment temperature display screens, 705- ambient humidity display screens, 706-
Radio transmission antenna, 707- main displays, 708- outlet joints, 709- lead-in line joints, 711- alarms, 712- controllers,
713- displays, 714- wireless communication modules, 715- ambient humidity sensors, 716- environment temperature sensors.
Embodiment
Below in conjunction with the accompanying drawings and embodiment describes the specific embodiment of the invention：
As shown in Fig. 1~7, it illustrates the embodiment of the present invention, as illustrated, disclosed by the invention be used for
The pressure on-line monitoring system of 750kV high-tension insulating bushings, the inside of high-tension insulating bushing 1 are filled with fluid, comprising being arranged on height
Fuel outlet 2 that is pressing insulating sleeve bottom sides and being connected with high-tension insulating bushing inside；One three is installed on the fuel outlet
Logical 4；One entrance of threeway is connected with the fuel outlet, is separately installed with pressure transmitter 3 in two outlets of threeway and is drawn
Down-sampling pipe 5；Draw down-sampling pipe to extend downwardly, and draw the end installation Sampler valves 6 of down-sampling pipe；
It is provided with the threeway and exports the switch valve 10 being respectively turned on for switching entrance and two；
The signal of the pressure transmitter is communicated by communication module 307 and in-site collecting device 7；
The in-site collecting device is communicated by communication device 8 and background computer 9；Background computer is generally located on monitoring
Room, the data of insulating sleeve can be controlled in real time by the operation of operator on duty in Control Room.
The in-site collecting device includes controller 712, display 713, alarm 711 and for being communicated with background computer
Wireless communication module 714；The controller is connected with the display, alarm and wireless communication module；It is described to adopt on the spot
Storage is also associated with power module；The in-site collecting device is also comprising the environment temperature sensor 704 and ring being connected with controller
Border humidity sensor 705.
Preferably, as shown in the figure：Top grading shield 11 is provided with the top of the high-tension insulating bushing, in the grading shield of top
Filled with fluid, liquid level gauge 12 is installed on the top grading shield；The housing side of the liquid level gauge is offered for assembling
The sleeve pipe of wireless pressure transmitter 13；The wireless pressure transmitter and the in-site collecting device wireless telecommunications.The present embodiment exists
Pressure transmitter is there are also installed at the top of insulating sleeve；The purpose that wireless pressure transmitter is set at the top of insulating sleeve is to keep away
Exempt from wiring interference, the wiring potential safety hazard of 750kV high pressure extraction wires position；So that wireless pressure transmitter has stable work
Process；Consequently, it is possible to monitor pressure (and temperature of preferred embodiment) simultaneously up and down, using the teaching of the invention it is possible to provide reliable data, i.e.,
Shi Kexue accurately has found defect, avoids losing.Sleeve pipe is made on the housing of liquid level gauge, the sleeve pipe and the oil in the grading shield of top
Liquid is connected, and pressure is gathered after installing wireless pressure transmitter.Liquid level gauge uses common floating ball structure；One end of ball float is placed in oil
In liquid, the ball float other end is rotated by the lifting of ball float, the liquid level gauge indicators turn of rotation process driving magnetic force connection；This knot
Structure is advantageous to the requirement of reliability and seal；Meanwhile without powering, avoid the difficulty of eminence power taking.
Preferably, as shown in the figure：The wireless pressure transmitter, pressure transmitter include shell 301, the bottom of shell
Joint 303 is set, and the inside of shell is provided with wiring board 310 and binding post 308, and communication module 307, temperature are connected on wiring board
Degree and pressure signal processing module 312, power supply 309；The joint is built with pressure sensor 304 and temperature sensor 305；Institute
State pressure sensor, temperature sensor is connected by wiring board with temperature and pressure signal processing module；In this preferred embodiment
Disclosed wireless pressure transmitter and pressure transmitter configurations are reasonable, can simultaneously collecting temperature and pressure；Therefore, to insulation sleeve
The monitoring of pipe provides more comprehensive information, and lifting monitors comprehensive and accuracy；
The communication module of the wireless pressure transmitter is the communication module of wireless telecommunications；The communication of the pressure transmitter
Module is the communication module of wireless telecommunications or wire communication；The wireless pressure transmitter is provided with antenna 306, day on shell
Line connects with binding post；The power supply of the wireless pressure transmitter is the battery covered after shell.In the present embodiment,
The structure of wireless pressure transmitter is targetedly devised, sets antenna to help to be wirelessly transferred, sets battery to cause without high
Locate power taking, lift reliability and safety-type.
Preferably, as shown in the figure：The wireless pressure transmitter, pressure transmitter also include the table being arranged on shell
Disk 302, display window is provided with dial plate, corresponding, the wiring board is also associated with display module 311.The present embodiment is set
Display structure in (wireless) pressure transmitter position enables to the observation of plurality of positions while realized, this mode contributes to
Result is checked at any time, additionally it is possible to prevents some environment from showing mistake caused by malfunctioning, hence in so that monitoring is relatively reliable.
Preferably, as shown in the figure：The switch valve is motor-driven valve；The control module of the motor-driven valve and in-site collecting device
Controller connection；After setting motor-driven valve, whole sampling process more automates, it is possible to achieve on-line period, specifically, just
Ground display instrument control motor-driven valve starts so that the threeway port closing of pressure transmitter position, the threeway for drawing down-sampling pipe are opened
(under normal monitoring situation, drawing the threeway port closing of down-sampling pipe), it is sampled at this point it is possible to be opened manually using valve,
It is very convenient；Reduce sampling difficulty.
Or the switch valve is hand-operated valve, is provided with rotating mark on the valve handle of the hand-operated valve, as shown in Figure 2.
The convenience of hand-operated valve declines, but cost also declines simultaneously, and a kind of preferred embodiment that the present invention recommends.
Preferably, as shown in the figure：The in-site collecting device includes casing 702 and case lid 701, and bottom half is provided for wearing
Enter the lead-in line joint 709 of inlet wire and the outlet joint 708 for passing outlet；The tank surface be provided with main display 707,
Switch 703, environment temperature display screen 704 and ambient humidity display screen 705；The environment temperature display screen and ambient humidity are shown
Shield for digital imaging tube display screen；The casing top sets radio transmission antenna 706；The alarm is audible-visual annunciator；
The in-site collecting device includes 1 road moisture signal, 1 road temperature signal；2 tunnel alarm signals；The remote transfer signal of 1 tunnel 485；The alarm
Device is audible-visual annunciator；Wireless communication module is wirelessly transferred using 433MHz zigbee.In-site collecting device scene carries out pressure and adopted
Collection and transmission, play scene display and relay transmission effect, can allow scene all 750kV high-tension insulating bushing on install
Pressure transmitter and wireless pressure transmitter simultaneously be connected with in-site collecting device；Consequently, it is possible to in-site collecting device can be concentrated
Transmission and display, edge manipulation and management；In-site collecting has the collection signaling interface of multichannel.
Preferably, as shown in the figure：The controller of the in-site collecting device includes amplification circuit module, arm processor, numeral
Analog converter, voltage current adapter and electric current galvanostat；Controller passes ambient pressure sensor, ambient humidity sensor
The signal come carries out signal amplification by built-in amplification circuit module, and the signal after amplification is carried out by the arm processor
Calculate；The signal data being calculated is converted into voltage signal by digital analog converter, then passes through the voltage x current
Converter changes into current signal, and current signal is transmitted by the communication module after electric current galvanostat by in-site collecting device.This
In embodiment, the ambient humidity sensor signal and ambient temperature signal that collect can be accurately by ARM after amplification
Manage device collection to calculate, final result of calculation can also become the teletransmission current signal of final stabilization after conversion, realize
Signal enhancing, improve the stability of overall data acquisition process transmission.
Preferably, as shown in the figure：The pressure transmitter uses range as 0~0.5MPa, precision be 0.1 grade, temperature-
40~80 degree of absolute pressure transducer；The casing of the in-site collecting device is water-proof type cast aluminium cabinet.
Preferably, as shown in the figure：The connecting line of the pressure transmitter and in-site collecting device is Teflon lead；The nothing
The antenna of line pressure transmitter is Teflon antenna.Iron Buddhist dragon material can avoid that chemistry occurs with the outside debris such as transformer oil
Reflection, improving stability.
The preferred embodiment for the present invention is explained in detail above in conjunction with accompanying drawing, but the invention is not restricted to above-mentioned implementation
Mode, can also be on the premise of present inventive concept not be departed from those of ordinary skill in the art's possessed knowledge
Make a variety of changes, these changes are related to correlation technique well-known to those skilled in the art, and these both fall within patent of the present invention
Protection domain.
Many other changes and remodeling can be made by not departing from the spirit and scope of the present invention.It should be appreciated that the present invention is not
It is limited to specific embodiment, the scope of the present invention is defined by the following claims.
Claims (9)
1. for the pressure on-line monitoring system of 750kV high-tension insulating bushings, fluid is filled with inside high-tension insulating bushing, it is special
Sign is：Include fuel outlet that is being arranged on high-tension insulating bushing bottom sides and being connected with high-tension insulating bushing inside；It is described
One threeway is installed on fuel outlet；One entrance of threeway is connected with the fuel outlet, is installed respectively in two outlets of threeway
There is pressure transmitter and draw down-sampling pipe；Draw down-sampling pipe to extend downwardly, and draw the end installation Sampler valves of down-sampling pipe；
It is provided with the threeway and exports the switch valve being respectively turned on for switching entrance and two；
The signal of the pressure transmitter is communicated by communication module and in-site collecting device；
The in-site collecting device is communicated by communication device and background computer；
The in-site collecting device includes controller, display, alarm and the wireless telecommunications mould for being communicated with background computer
Block；The controller is connected with the display, alarm and wireless communication module；The in-site collecting device is also associated with power supply
Module；The in-site collecting device is also comprising the environment temperature sensor and ambient humidity sensor being connected with controller.
2. it is used for the pressure on-line monitoring system of 750kV high-tension insulating bushings as claimed in claim 1, it is characterised in that：Institute
State and top grading shield is provided with the top of high-tension insulating bushing, be filled with fluid in the grading shield of top, on the top grading shield
Liquid level gauge is installed；The housing side of the liquid level gauge offers the sleeve pipe for assembling wireless pressure transmitter；It is described wireless
Pressure transmitter and the in-site collecting device wireless telecommunications.
3. it is used for the pressure on-line monitoring system of 750kV high-tension insulating bushings as claimed in claim 1 or 2, it is characterised in that：
The wireless pressure transmitter, pressure transmitter include shell, and the bottom of shell sets joint, and the inside installation of shell is wired
Road plate and binding post, communication module, temperature and pressure signal processing module, power supply are connected on wiring board；The joint is built-in
There are pressure sensor and temperature sensor；The pressure sensor, temperature sensor pass through wiring board and temperature and pressure signal
Processing module connects；
The communication module of the wireless pressure transmitter is the communication module of wireless telecommunications；The communication module of the pressure transmitter
For wireless telecommunications or the communication module of wire communication；The wireless pressure transmitter is provided with antenna on shell, and antenna is with connecing
Line terminals connect；The power supply of the wireless pressure transmitter is the battery covered after shell.
4. it is used for the pressure on-line monitoring system of 750kV high-tension insulating bushings as claimed in claim 3, it is characterised in that：Institute
State wireless pressure transmitter, pressure transmitter and also include the dial plate being arranged on shell, display window is provided with dial plate, it is right
Answer, the wiring board is also associated with display module.
5. it is used for the pressure on-line monitoring system of 750kV high-tension insulating bushings as claimed in claim 1, it is characterised in that：Institute
It is motor-driven valve to state switch valve；The control module of the motor-driven valve is connected with the controller of in-site collecting device；
Or the switch valve is hand-operated valve, and rotating mark is provided with the valve handle of the hand-operated valve.
6. it is used for the pressure on-line monitoring system of 750kV high-tension insulating bushings as claimed in claim 1, it is characterised in that：Institute
State in-site collecting device and include casing and case lid, bottom half is provided for penetrating the lead-in line joint of inlet wire and for passing outlet
Outlet joint；The tank surface is provided with main display, switch, environment temperature display screen and ambient humidity display screen；It is described
Environment temperature display screen and ambient humidity display screen are digital imaging tube display screen；The casing top sets and is wirelessly transferred day
Line；The alarm is audible-visual annunciator；The in-site collecting device includes 1 road moisture signal, 1 road temperature signal；2 road alarm signals
Number；The remote transfer signal of 1 tunnel 485；The alarm is audible-visual annunciator；Wireless communication module is wirelessly passed using 433MHz zigbee
It is defeated.
7. it is used for the pressure on-line monitoring system of 750kV high-tension insulating bushings as claimed in claim 6, it is characterised in that：Institute
The controller for stating in-site collecting device includes amplification circuit module, arm processor, digital analog converter, voltage current adapter
With electric current galvanostat；The signal that ambient pressure sensor, ambient humidity sensor transmit is passed through built-in amplification electricity by controller
Road module carries out signal amplification, and the signal after amplification is calculated by the arm processor；The signal data being calculated leads to
Cross digital analog converter and be converted into voltage signal, current signal, electric current are then changed into by the voltage current adapter
Signal is transmitted by the communication module after electric current galvanostat by in-site collecting device.
8. it is used for the pressure on-line monitoring system of 750kV high-tension insulating bushings as claimed in claim 1, it is characterised in that：Institute
State pressure transmitter and use range as 0~0.5MPa, precision is 0.1 grade, absolute pressure transducer of the temperature at -40~80 degree；
The casing of the in-site collecting device is water-proof type cast aluminium cabinet.
9. it is used for the pressure on-line monitoring system of 750kV high-tension insulating bushings as claimed in claim 3, it is characterised in that：Institute
The connecting line for stating pressure transmitter and in-site collecting device is Teflon lead；The antenna of the wireless pressure transmitter is Teflon
Antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710945536.4A CN107576443A (en) | 2017-10-12 | 2017-10-12 | Pressure on-line monitoring system for 750kV high-tension insulating bushings |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710945536.4A CN107576443A (en) | 2017-10-12 | 2017-10-12 | Pressure on-line monitoring system for 750kV high-tension insulating bushings |
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| CN201710945536.4A Pending CN107576443A (en) | 2017-10-12 | 2017-10-12 | Pressure on-line monitoring system for 750kV high-tension insulating bushings |
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Cited By (6)
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| CN108318849A (en) * | 2018-03-19 | 2018-07-24 | 国网新疆电力有限公司 | A kind of wireless sensor device and wireless detecting system |
| CN108492971A (en) * | 2018-03-17 | 2018-09-04 | 国网新疆电力有限公司 | For the monitoring assembly of oil-immersed current transformer, installation method and monitoring system |
| CN109884488A (en) * | 2019-04-11 | 2019-06-14 | 苏州正秦电气有限公司 | A kind of bushing shell for transformer online oil monitoring device collector |
| CN110060858A (en) * | 2019-04-11 | 2019-07-26 | 国网辽宁省电力有限公司电力科学研究院 | Oil-immersed current transformer internal abnormality judgment means based on accurate oil pressure acquisition method |
| CN112326153A (en) * | 2020-09-23 | 2021-02-05 | 国网江苏省电力有限公司电力科学研究院 | Transformer bushing sealing degree monitoring device and method thereof |
| CN117129133A (en) * | 2023-10-27 | 2023-11-28 | 南京中鑫智电科技有限公司 | Online monitoring method and system for high-voltage casing pressure |
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