CN108318849A - A kind of wireless sensor device and wireless detecting system - Google Patents
A kind of wireless sensor device and wireless detecting system Download PDFInfo
- Publication number
- CN108318849A CN108318849A CN201810224335.XA CN201810224335A CN108318849A CN 108318849 A CN108318849 A CN 108318849A CN 201810224335 A CN201810224335 A CN 201810224335A CN 108318849 A CN108318849 A CN 108318849A
- Authority
- CN
- China
- Prior art keywords
- pressure
- sensor
- temperature
- wireless
- value
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000012545 processing Methods 0.000 claims abstract description 56
- 238000007654 immersion Methods 0.000 claims abstract description 46
- 238000001514 detection method Methods 0.000 claims description 95
- 230000005540 biological transmission Effects 0.000 claims description 20
- 238000007789 sealing Methods 0.000 claims description 17
- 229910052751 metal Inorganic materials 0.000 claims description 13
- 239000002184 metal Substances 0.000 claims description 13
- 239000000945 filler Substances 0.000 claims description 10
- 238000005070 sampling Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- 238000004590 computer program Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 2
- 238000004148 unit process Methods 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 claims 1
- 238000007689 inspection Methods 0.000 abstract description 14
- 230000015556 catabolic process Effects 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 75
- 239000007789 gas Substances 0.000 description 28
- 229910052739 hydrogen Inorganic materials 0.000 description 25
- 239000001257 hydrogen Substances 0.000 description 25
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 21
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 11
- 229910045601 alloy Inorganic materials 0.000 description 11
- 239000000956 alloy Substances 0.000 description 11
- 238000009434 installation Methods 0.000 description 11
- 229910052710 silicon Inorganic materials 0.000 description 11
- 239000010703 silicon Substances 0.000 description 11
- 239000010409 thin film Substances 0.000 description 11
- 238000005259 measurement Methods 0.000 description 8
- 238000004891 communication Methods 0.000 description 6
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 5
- 230000005611 electricity Effects 0.000 description 5
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 5
- 229910052744 lithium Inorganic materials 0.000 description 5
- 229910000619 316 stainless steel Inorganic materials 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000004880 explosion Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 229910000990 Ni alloy Inorganic materials 0.000 description 2
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 238000007726 management method Methods 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 238000005979 thermal decomposition reaction Methods 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/02—Testing or calibrating of apparatus covered by the other groups of this subclass of auxiliary devices, e.g. of instrument transformers according to prescribed transformation ratio, phase angle, or wattage rating
Abstract
The invention discloses a kind of wireless sensing devices, it is detected applied to high pressure oil immersion current transformer, including temperature sensor, pressure sensor, signal processing unit, sensor main control unit and radio receiving transmitting module, temperature sensor and pressure sensor are separately connected signal processing unit, signal processing unit connects sensor main control unit, and sensor main control unit connects radio receiving transmitting module.The present invention also provides a kind of wireless detecting systems.Wireless sensing device and wireless detecting system provided by the invention, by detecting the temperature and pressure value in high pressure oil immersion current transformer, and server is sent to by radio receiving transmitting module, can detect in real time and whether occur few oil in high pressure oil immersion current transformer, the accidents such as breakdown occur, at the same avoid the problem that personnel's inspection not in time and waste of manpower.
Description
Technical field
The present invention relates to high voltage electric equipment technical fields, more particularly to one kind being applied to high pressure oil immersion current transformer
Wireless sensing device and wireless detecting system.
Background technology
High pressure oil immersion current transformer using oil insulate to coil, high-tension apparatus in the process of running usually because
Certain reason occurs internal breakdown and generates bulk gas, to cause internal pressure to increase, or even sets off an explosion.High pressure oil at present
The explosion-proof mode of immersion current transformer is installation metal expander, when mutual inductor breaks down, in the gas of generation makes
Portion's pressure rise makes metal expander elongation to achieve the purpose that release stress and prompt failure.Or it is mutual in oil-immersed current
Explosion-protection equipment is filled on sensor, and venting of dust explosion is carried out when pressure reaches certain value.No matter which kind of explosion-proof mode all can only be in pressure mistake
Big attend the meeting just is acted when causing equipment damage, and the personnel inspection of also needing to could find failure.
In addition, when oil leak situation occurs in equipment, the insulation performance of equipment, which can weaken, even results in punch through damage, at present still
It can only just can know that by manual inspection by observing oil level inspection hole.And mutual inductor is generally relatively high, cannot be directly viewed
Oil level in observation window makes inspection difficulty increase.
Invention content
For existing high pressure oil immersion current mulual inductor malfunction context of detection there are the problem of, the embodiment of the present invention provide nothing
Line sensing device and wireless detecting system can detect and breakdown, oil leak whether occur in high pressure oil immersion current transformer in time
Etc. failures, and solve the problems, such as manual inspection.
A kind of wireless sensing device provided in an embodiment of the present invention is examined applied to high pressure oil immersion current transformer
It surveys, including temperature sensor, pressure sensor, signal processing unit, sensor main control unit and radio receiving transmitting module, temperature passes
Sensor and pressure sensor are separately connected signal processing unit, and signal processing unit connects sensor main control unit, sensor master
It controls unit and connects radio receiving transmitting module；
The temperature that temperature sensor is used to that the temperature in high pressure oil immersion current transformer to be detected and will be detected
Detection signal is sent to signal processing unit；
The pressure that pressure sensor is used to that the pressure in high pressure oil immersion current transformer to be detected and will be detected
Detection signal is sent to signal processing unit；
Signal processing unit, and will treated temperature for handling temperature detection signal and pressure detecting signal
Detected signal value and pressure detecting signal value are sent to sensor main control unit；
Sensor main control unit is for receiving temperature detection signal value and pressure detecting after signal processing unit processes
Signal value, and sent by radio receiving transmitting module.
Under normal circumstances, since temperature change oily in high pressure oil immersion current transformer can make volume change, from
And internal pressure is caused to change, this variation range is smaller, generally ± 10Kpa or so, so basic place inside current transformer
In micro-positive pressure or tiny structure.Wireless sensing device provided in an embodiment of the present invention measures high pressure oil immersion current transformer in real time
Temperature detection signal value and detected signal value are uploaded to server by wireless signal and are shown on the spot by interior pressure and temperature
Show or upload the data to backstage again and shows.After receiving data, it can judge whether equipment breaks down by temperature height
And cause to generate heat, judge whether equipment bulk gas or oil leak situation occurs by pressure size.Nothing i.e. provided by the invention
Line sensing device can detect to find whether break down in current transformer in time, in real time to overcome existing detection
Equipment cannot detect in time, but just to recognize when metal expander has deformed upon and have occurred that failure.Meanwhile passing through
Temperature detection signal value and pressure detecting signal value are transferred to server by setting radio receiving transmitting module, need not arrange personnel again
Live inspection is gone, manpower is both saved, also improves efficiency.
Preferably, further include power module, power module connects sensor main control unit, and sensor main control unit passes through
IO1 interfaces connect temperature sensor, sensor main control unit connects pressure sensor, sensor main control unit by IO2 interfaces
It is separately connected temperature sensor data acquisition port and pressure sensor data acquisition port by signal processing unit.By the way that electricity is arranged
Source module provides power supply, such as accumulator, lithium battery, and power supply and wireless sensing device can be arranged integrally, need not be again
In addition circuit is provided power supply is provided, i.e., need not still further be connected up on high-tension apparatus, the safety of device can be provided, while
The installation of more convenient device.
Preferably, sensor main control unit includes memory and processor, and memory is stored with executable computer program
The temperature detection data and pressure sensor detected with temperature sensor detect pressure detection data, and processor is for calling
The computer executable program that is stored in memory simultaneously realizes following method for managing power supply：
Data acquire energizing step：When the preset data acquisition intervals time arrives, pass through IO1 interfaces and IO2 interfaces
High level is sent to temperature sensor and pressure sensor, opens the feeder ear of temperature sensor and pressure sensor gathered data
Mouthful；And when receiving the temperature detection signal and pressure detecting signal that temperature sensor and pressure sensor detect, pass through
IO1 interfaces and IO2 interfaces send low level to temperature sensor and pressure sensor, close the temperature sensor and pressure passes
The supply port of sensor gathered data；
Data processing energizing step：Call the temperature detection signal value and pressure that the last time stored in memory detects
Detected signal value calculates the temperature between just collected temperature detection signal value and last collected temperature detection signal value
Spend the pressure between change in detection signal value and just collected pressure detecting signal value and last acquisition pressure detecting signal value
Power change in detection signal value, and judge whether temperature detection signal changing value is less than preset temperature change threshold value, judge simultaneously
Pressure detecting signal changing value whether be less than preset pressure change threshold value, if so, control sensor main control unit enter it is low
Power consumption mode, if wherein temperature detection signal changing value or pressure detecting signal changing value any one of be more than become
Change threshold value, the temperature detection signal value just detected and pressure detecting signal value are sent by radio receiving transmitting module immediately.
Sensor main control unit is by the power supply management to temperature sensor, pressure sensor, in temperature sensor and pressure
When force snesor need not carry out data acquisition, supply port is disconnected, electric energy can be saved.It is sent simultaneously by controlling data
Frequency, when that need not handle with transmission data, whole device is in low-power consumption mode, can save electric energy to the maximum limit,
Make power module, as the electricity in accumulator, lithium battery can ensure wireless sensing device in high pressure oil immersion Current Mutual Inductance
In addition device whole life cycle, which carries out temperature and pressure detection, need not all replace battery.
Preferably, data processing energizing step further includes：When judge temperature detection signal changing value be less than preset temperature
Change threshold, and pressure detecting signal changing value be less than preset pressure change threshold value when, then judge whether to data send
Interval time sends the just collected temperature detection signal value and pressure detecting letter if having arrived data transmission interval time
Number value, otherwise, into low-power consumption mode.By the way that data transmission interval time is arranged, may remain in the regular hour will adopt
The temperature detection signal value and pressure detecting signal value collected is sent to server, to facilitate server staff to check, together
When facilitate server to preserve relevant historical data, and can be changed at trend analysis by the historical data to preservation
Reason, to analyze the working condition of high pressure oil immersion current transformer.
Preferably, data processing energizing step is judging whether to before data transmission interval time, further includes：
Judge just whether collected temperature detection signal value is less than preset temperature threshold, and just collected pressure inspection
It surveys whether signal value is less than preset first pressure threshold value, or is more than preset second pressure threshold value, if it is, continuing to sentence
It is disconnected whether to arrive data transmission interval time, otherwise, just collected temperature detection signal value and the pressure detecting are sent immediately
Signal value.Wherein preset temperature threshold is dangerous temperature value, illustrates that temperature is too high higher than this temperature, failure or few occurs
Oil, first pressure threshold value are the first safe pressure value, for characterizing in current transformer whether generate a large amount of gas because accident occurs
Body illustrates to produce a large amount of gas in equipment, there is accident hair if pressure detecting signal value is more than the first safe pressure value
It is raw；Second pressure threshold value is the second safe pressure value, for characterize equipment whether oil leak, if pressure detecting signal value is less than the
Two pressure thresholds illustrate that oil accident has occurred in current transformer.In addition to comparing transformed value, also compare the temperature inspection detected
Signal value and pressure detecting signal value are surveyed whether within the scope of safe temperature and pressure, if having met or exceeded safety
The temperature detection signal value detected and pressure detecting signal value also will be sent to server by temperature and pressure range immediately.
The index for judging high pressure oil immersion operation of current transformers exception is increased, evaluation can be more fully made, is found in time high
Whether pressure oil-immersed current transformer breaks down.
Preferably, signal processing unit includes filter and analog-digital converter；Filter is used for temperature sensor and pressure
The temperature detection and pressure detecting signal that force snesor detects in high pressure oil immersion current transformer are filtered；Mould
Number converter is used to the filter filtering temperature detection signal that treated simulates and pressure detecting signal being converted to number
Temperature detection signal and pressure detecting signal.Detection signal is filtered by filter, preferably detection letter can be obtained
Number, to obtain more accurate temperature information, pressure information, to make more accurate breakdown judge.
Preferably, temperature, pressure detection unit further includes density of hydrogen measurement module, the connection filter of density of hydrogen measurement module
Wave device is sent to filter for detecting density of hydrogen signal in high pressure oil immersion current transformer, and by density of hydrogen signal.
High pressure oil immersion current transformer using oil insulate to coil, heat and electricity under the action of can gradual aging and decomposition, produce
Raw a small amount of various low molecular hydrocarbons and CO, CO2Equal gases.These gases largely dissolve in the oil, when failure generates, just
It can accelerate the generation speed of these gases, and constantly cause internal pressure to increase in spillage oil, so as to cause explosion, and H2It is to set
Gas that is earliest in standby appearance electric discharge (partial discharge, spark, electric arc) and thermal decomposition process, most easily producing.It is dense by the way that hydrogen is arranged
Degree measurement module whether have hydrogen generation inside detection device, can find discharge fault more in time.
Preferably, pressure sensor is the piezoresistive silicon sensor of 316L stainless steels encapsulation.
Preferably, density of hydrogen measurement module is solid-state palldium alloy thin film sensor.
Preferably, wireless sensing device is set as the sampling valve plug mounted on high pressure oil immersion current transformer bottom, packet
Include upper casing, sealing ring, the pcb board for being set as sensor main control unit, signal processing unit, lower casing, temperature sensor, silicon pressure drag
It formula sensor, solid-state palldium alloy thin film sensor and is sealed by sealing ring with outer-hexagonal plug, pcb board and signal processing unit
It is fixed between upper casing and lower casing, temperature sensor, piezoresistive silicon sensor and solid-state palldium alloy thin film sensor pass through screw thread
Connect band outer-hexagonal plug, band outer-hexagonal plug is for being tightened to sampling valve aperture of door.By by wireless sensing device and
Sample cock plug is integrally designed, it may not be necessary in addition be designed installation site on high pressure oil immersion current transformer, is also not required to
In addition it to connect up, do not destory the scene equipment, and installation is simple, convenient disassembly.
Preferably, wireless sensing device be set as be mounted on metal expander in oil filler plug, including upper casing, sealing ring,
It is set as the pcb board of sensor main control unit, signal processing unit, lower casing, temperature sensor, piezoresistive silicon sensor, solid-state
Palldium alloy thin film sensor and with outer-hexagonal plug, pcb board is fixed on by sealing ring sealing between upper casing and lower casing, and temperature passes
Sensor, piezoresistive silicon sensor and solid-state palldium alloy thin film sensor are connected through a screw thread band outer-hexagonal plug, and band outer-hexagonal is stifled
Head is for being tightened to oil filler point.By the way that wireless sensing device and sampling oil filler plug are integrally designed, it may not be necessary to
Installation site is in addition designed on high pressure oil immersion current transformer, also need not in addition be connected up, do not destory the scene equipment, installation letter
It is single, convenient disassembly.
The embodiment of the present invention also provides a kind of wireless detecting system, includes such as above-mentioned wireless sensing device, further includes nothing
Line receiving converter, wireless relay apparatus, radio network gateway, serial server and display module；
Wireless receiving converter receives the first mode wireless signal that radio receiving transmitting module is sent, and is converted to second mode
Wireless signal is simultaneously sent to wireless relay apparatus；
Wireless relay apparatus receives the second mode wireless signal that wireless receiving converter is sent, and is sent to wireless network
It closes；
Radio network gateway connects serial server by serial port data line, and serial server connects the display module.
Wireless detecting system provided in an embodiment of the present invention is detected applied to high pressure oil immersion current transformer,
It can detect in real time to find whether break down in current transformer in time, to overcome existing detection device timely
Detection, but just to recognize when metal expander has deformed upon and have occurred that failure.Meanwhile by the way that wireless receiving and dispatching is arranged
Temperature detection signal value and pressure detecting signal value are transferred to server by module, personnel need not be arranged to go live inspection again,
Both manpower is saved, efficiency is also improved.
Preferably, further include wireless router and handheld terminal, serial server connects the hand by wireless router
Hold terminal.Serial server can by wireless router by the temperature information of high pressure oil immersion current transformer, pressure information,
Hydrogen content information is forwarded to handheld terminal, such as mobile phone by wireless router, can facilitate staff in a certain range
Relevant information, convenient the case where notifying staff's equipment in time can be received, and when situation occurs in equipment, facilitates work
Personnel's timely processing failure.
Description of the drawings
Fig. 1 is wireless sensing device structural schematic diagram in the embodiment of the present invention 1；
Fig. 2 is wireless sensing device preferred embodiment structural schematic diagram in the embodiment of the present invention 1；
Fig. 3 is that wireless sensing device is set as sample cock plug or oil filler plug structural schematic diagram in the embodiment of the present invention 1；
Fig. 4 is wireless detecting system preferred embodiment structural schematic diagram in the embodiment of the present invention 2.
In attached drawing：100, wireless sensing device；110, temperature sensor；120, pressure sensor；130, signal processing list
Member；131, filter；132, analog-digital converter；140, sensor main control unit；141, memory；142, processor；150, nothing
Line transceiver module；160, power module；210, display module；220, radio network gateway；230, serial server；310, upper casing；
320, sealing ring；330, lower casing；340, band outer-hexagonal plug；410, wireless receiving converter；420, wireless relay apparatus；430、
Wireless router；440, handheld terminal.
Specific implementation mode
In the following, in conjunction with attached drawing and specific implementation mode, the present invention is described further, it should be noted that not
Under the premise of conflicting, new implementation can be formed between various embodiments described below or between each technical characteristic in any combination
Example.
Embodiment 1：
As shown in Figure 1 and Figure 2, a kind of wireless sensing device 100 provided in an embodiment of the present invention is applied to high voltage oil immersion
Formula current transformer is detected, including temperature sensor 110, pressure sensor 120, signal processing unit 130, sensor master
Control unit 140 and radio receiving transmitting module 150, temperature sensor 110 and pressure sensor 120 are separately connected signal processing unit
130, signal processing unit 130 connects sensor main control unit 140, and sensor main control unit 140 connects radio receiving transmitting module
150；
The temperature that temperature sensor 110 is used to that the temperature in high pressure oil immersion current transformer to be detected and will be detected
Degree detection signal is sent to signal processing unit 130；
The pressure that pressure sensor 120 is used to that the pressure in high pressure oil immersion current transformer to be detected and will be detected
Power detection signal is sent to signal processing unit 130；
Signal processing unit 130 is used to handle temperature detection signal and pressure detecting signal, and by treated
Temperature detection signal value and pressure detecting signal value are sent to sensor main control unit 140；
Sensor main control unit 140 is for receiving through treated temperature detection signal value and the pressure of signal processing unit 130
Power detected signal value, and sent by radio receiving transmitting module 150.
Radio receiving transmitting module 150 can be communicated by existing cordless communication network, such as GPRS network, GSM network, CDMA
Network, 3G, 4G network send transmission temperature detection signal value and pressure detecting signal value, with the development of network technology, after
Can also use 5G real-time performances communicate, mainly by be arranged on radio receiving transmitting module 150 corresponding network communication module come
It realizes.Radio receiving transmitting module 150 can also transmit temperature detection signal value and pressure detecting signal by other communication networks
Value, such as WIFI, Zigbee.
Under normal circumstances, since temperature change oily in high pressure oil immersion current transformer can make volume change, from
And internal pressure is caused to change, this variation range is smaller, generally ± 10Kpa or so, so basic place inside current transformer
In micro-positive pressure or tiny structure.Wireless sensing device 100 provided in an embodiment of the present invention measures high pressure oil immersion Current Mutual Inductance in real time
Temperature detection signal value and detected signal value are uploaded to server by wireless signal and carried out on the spot by the pressure and temperature in device
Display upload the data to backstage display again.After receiving data, it can judge whether equipment event occurs by temperature height
Hinder and cause to generate heat, judges whether equipment bulk gas or oil leak situation occurs by pressure size.It is i.e. provided by the invention
Wireless sensing device 100 can be detected in real time to find whether break down in current transformer in time, existing to overcome
Detection device cannot detect in time, but just to recognize when metal expander has deformed upon and have occurred that failure.Meanwhile
Temperature detection signal value and pressure detecting signal value are transferred to server by the way that radio receiving transmitting module 150 is arranged, it need not be again
Arrangement personnel go live inspection, both save manpower, also improve efficiency.
Signal processing unit 130 includes filter 131 and analog-digital converter 132；Filter 131 is used for temperature sensor
110 and the temperature detection in the high pressure oil immersion current transformer that detects of pressure sensor 120 and pressure detecting signal carry out
It is filtered；Temperature detection signal and pressure detecting of the analog-digital converter 132 for the simulation after being filtered filter 131
Signal is converted to the temperature detection signal and pressure detecting signal of number.Detection signal is filtered by filter 131, it can
Sentenced to make more accurate failure to obtain more accurate temperature information, pressure information with obtaining preferably detection signal
It is disconnected.
Wherein, pressure sensor 120 is applied to 316L stainless steels using the piezoresistive silicon sensor of 316L stainless steels encapsulation
Pressure on diaphragm is conducted by silicone oil to pressure element.Temperature sensor 110 and pressure sensor 120 integrated can be set
It sets, sensor main control unit 140 obtains temperature detection signal value by ADC (analog-digital converter 132) and acquisition pressure detecting is believed
Number value, sensor main control unit 140 calculate target pressure value and temperature value by software mean filter.
As described in Figure 2, further include power supply in a kind of preferred embodiment of wireless sensing device 100 provided by the invention
Module 160, power module 160 connect sensor main control unit 140, and sensor main control unit 140 connects temperature by IO1 interfaces
Sensor 110, sensor main control unit 140 connect pressure sensor 120 by IO2 interfaces, and sensor main control unit 140 passes through
The connection of signal processing unit 130 is separately connected 120 data acquisition port of 110 data acquisition port of temperature sensor and pressure sensor.
Power supply, such as accumulator, lithium battery are provided by the way that power module 160 is arranged, power supply and wireless sensing device 100 can be arranged
Integrally, circuit need not be still further provided, power supply is provided, i.e., need not still further connected up on high-tension apparatus, dress can be provided
The safety set, while being also more convenient the installation of device.
Wherein, sensor main control unit 140 includes memory 141 and processor 142, and memory 141 is stored with executable
The temperature detection data and pressure sensor 120 that computer program and temperature sensor 110 detect detect pressure detecting number
According to processor 142 is for calling the computer executable program stored in memory 141 and realizing following method for managing power supply：
Data acquire energizing step：When the preset data acquisition intervals time arrives, pass through IO1 interfaces and IO2 interfaces
High level is sent to temperature sensor 110 and pressure sensor 120, temperature sensor 110 is opened and pressure sensor 120 acquires
The supply port of data；And receiving the temperature detection signal and pressure that temperature sensor 110 and pressure sensor 120 detect
When power detects signal, low level is sent to temperature sensor 110 and pressure sensor 120 by IO1 interfaces and IO2 interfaces, is closed
Close the supply port of 120 gathered data of the temperature sensor 110 and pressure sensor；The preset data acquisition intervals time can
To be arranged as required to, such as it is set as 10 seconds.
Data processing energizing step：Call last time for storing detects in memory 141 temperature detection signal value and
Pressure detecting signal value calculates between just collected temperature detection signal value and last collected temperature detection signal value
Temperature detection signal changing value and just between collected pressure detecting signal value and last acquisition pressure detecting signal value
Pressure detecting signal changing value, and judge temperature detection signal changing value whether be less than preset temperature change threshold value, simultaneously
Judge whether pressure detecting signal changing value is less than preset pressure change threshold value, if so, control sensor main control unit 140
Into low-power consumption mode, if wherein temperature detection signal changing value or pressure detecting signal changing value any one of
More than change threshold, the temperature detection signal value just detected and pressure detecting letter are sent by radio receiving transmitting module 150 immediately
Number value.
Wherein, temperature detection signal changing value is used for characterizing the situation of change of temperature, is set as Δ T, Δ T is bigger, illustrates temperature
Degree transformation is fiercer, is more than certain temperature change threshold, illustrates there is accident in current transformer, such as set temperature change threshold value
It it is 5 DEG C, when Δ T >=5 DEG C, it is necessary to the temperature detection signal value detected is sent to server immediately；Similarly, pressure is examined
Pressure changing or oil pressure situation of change that signal intensity value is used for characterizing the gas of generation are surveyed, is set as Δ P, Δ P is got over
Greatly, illustrate that the oil in the gas generated in same time substantial increase or current transformer significantly reduces, be more than certain
Pressure change threshold value illustrates there is accident in current transformer, or oil leak has occurred.Such as set pressure change threshold value as
10KPa, as Δ P >=10KPa, it is necessary to the pressure detecting signal value detected is sent to server immediately.
Sensor main control unit 140 is passed by the power supply management to temperature sensor 110, pressure sensor 120 in temperature
When sensor 110 and pressure sensor 120 need not carry out data acquisition, supply port is disconnected, electric energy can be saved.Pass through simultaneously
The frequency that data are sent is controlled, when that need not handle with transmission data, whole device is in low-power consumption mode, can be with maximum limit
Surely electric energy is saved so that power module 160, as the electricity in accumulator, lithium battery can ensure that wireless sensing device 100 exists
In addition high pressure oil immersion current transformer whole life cycle, which carries out temperature and pressure detection, need not all replace battery.
Wherein, data processing energizing step further includes：When judge temperature detection signal changing value less than preset temperature become
Change threshold value, and pressure detecting signal changing value be less than preset pressure change threshold value when, then judge whether to data send between
Every the time, if having arrived data transmission interval time, just collected temperature detection signal value and pressure detecting signal value are sent, it is no
Then, into low-power consumption mode.Data transmission interval time can be arranged as required to, and the present embodiment is set as 10 minutes, is passed through
Data transmission interval time is set, may remain in collected temperature detection signal value and pressure detecting in the regular hour
Signal value is sent to server, to facilitate server staff to check, while server being facilitated to preserve relevant historical data,
And trend analysis processing can be changed by the historical data to preservation, to analyze the work of high pressure oil immersion current transformer
Make state.
Wherein, data processing energizing step is judging whether to before data transmission interval time, further includes：
Judge just whether collected temperature detection signal value is less than preset temperature threshold, and just collected pressure inspection
It surveys whether signal value is less than preset first pressure threshold value, or is more than preset second pressure threshold value, if it is, continuing to sentence
It is disconnected whether to arrive data transmission interval time, otherwise, just collected temperature detection signal value and the pressure detecting are sent immediately
Signal value.Wherein preset temperature threshold is dangerous temperature value, illustrates that temperature is too high higher than this temperature, failure or few occurs
Oil, first pressure threshold value are the first safe pressure value, for characterizing in current transformer whether generate a large amount of gas because accident occurs
Body illustrates to produce a large amount of gas in equipment, there is accident hair if pressure detecting signal value is more than the first safe pressure value
It is raw；Second pressure threshold value is the second safe pressure value, for characterize equipment whether oil leak, if pressure detecting signal value is less than the
Two pressure thresholds illustrate that oil accident has occurred in current transformer.In addition to comparing transformed value, also compare the temperature inspection detected
Signal value and pressure detecting signal value are surveyed whether within the scope of safe temperature and pressure, if having met or exceeded safety
The temperature detection signal value detected and pressure detecting signal value also will be sent to server by temperature and pressure range immediately.
The index for judging high pressure oil immersion operation of current transformers exception is increased, evaluation can be more fully made, is found in time high
Whether pressure oil-immersed current transformer breaks down.
By being managed to battery, battery power can be greatly saved.1) collecting temperature sensor 110 and pressure pass
Electric current when sensor 120 and time：Acquisition in 1.4mA, 10ms, 10 seconds is primary, average current 1.4uA；2) sensor master control list
Member 140 handles time and the electric current of data and transmission data consumption：It sends once within 32mA, 34ms, 10 minutes, average current is
1.8uA。
The present invention is calculated using lithium battery service life：In standby mode, (140 suspend mode of sensor main control unit, temperature pass
Sensor 110 and the power-off of pressure sensor 120, radio receiving transmitting module 150 are idle) under electric current only 1uA, collecting temperature sensor 110
Electric current 1.4mA, time 10ms are only needed with 120 data of pressure sensor and processing data, acquisition in 10 seconds is primary, and average current is only
1.4uA, electric current 32mA when 150 transmission data of radio receiving transmitting module, time 34ms, normal mode send a number in lower 10 minutes
According to data include that data, the average currents such as temperature detection signal value, pressure detecting signal value, cell voltage, transmission times are
1.8uA, average current when whole device works is only 4.2uA.It is powered using battery (550mAh) based on ultralow Consumption
The service life of mode device can reach 10 years or more.The service life of current transformer is generally 8 years, and the present apparatus is used in electric current
It is entirely capable of meeting requirement on mutual inductor.
Further include density of hydrogen measurement module in a kind of preferred embodiment provided by the invention, density of hydrogen measures mould
Block connects filter 131, is sent out for detecting density of hydrogen signal in high pressure oil immersion current transformer, and by density of hydrogen signal
Give filter 131.High pressure oil immersion current transformer insulate to coil using oil, can be gradual under the action of heat and electricity
Aging and decomposition generate the gases such as a small amount of various low molecular hydrocarbons and CO, CO2.These gases largely dissolving in the oil, when
When failure generates, the generation speed of these gases will be accelerated, and constantly cause internal pressure to increase in spillage oil, so as to cause
Explosion.And H2It is that equipment the earliest, gas that most easily produces in electric discharge (partial discharge, spark, electric arc) and thermal decomposition process occurs.It is logical
It crosses setting density of hydrogen measurement module whether to have hydrogen generation inside detection device, can find discharge fault more in time.
Density of hydrogen measurement module uses solid-state palldium alloy film-sensing technology, solid-state palldium alloy thin film sensor to use
A kind of novel sensitive thin film is made in the materials such as Pd-Ni alloys, based on palladium to the specificity Catalysis Principles of H2, when detecting in environment
There are H2When, H2Molecule is catalyzed into H atom, is adsorbed in the lattice of Pd-Ni alloys, causes resistance variations, then by mating
Signal processing circuit, sensor main control unit 140 is by acquiring ADC treated signals, then will collect signal and be converted to H2
Concentration, to realize H2It measures.
In a kind of preferred embodiment of the present embodiment, as shown in figure 3, wireless sensing device 100 is set as being mounted on height
It presses the sampling valve plug of oil-immersed current transformer bottom, including upper casing 310, sealing ring 320, is set as sensor main control unit
140 pcb board, signal processing unit 130, lower casing 330, temperature sensor 110, piezoresistive silicon sensor, solid-state palldium alloy are thin
Film sensors and with outer-hexagonal plug 340, pcb board and signal processing unit 130 by sealing ring 320 sealing be fixed on upper casing
Between 310 and lower casing 330, temperature sensor 110, piezoresistive silicon sensor and solid-state palldium alloy thin film sensor are connected by screw thread
Tape splicing outer-hexagonal plug 340, band outer-hexagonal plug 340 is for being tightened to sampling valve aperture of door.By the way that wireless sensing is filled
Set 100 and sample cock plug integrated design, it may not be necessary to installation site is in addition designed on high pressure oil immersion current transformer,
Also it need not in addition connect up, do not destory the scene equipment, and installation is simple, convenient disassembly.
Wireless sensing device 100 may be set to be the oil filler plug in metal expander, including upper casing 310, close
Seal 320, the pcb board for being set as sensor main control unit 140, signal processing unit 130, lower casing 330, temperature sensor 110,
Piezoresistive silicon sensor, solid-state palldium alloy thin film sensor and with outer-hexagonal plug 340, pcb board and signal processing unit 130 are logical
It crosses the sealing of sealing ring 320 to be fixed between upper casing 310 and lower casing 330, temperature sensor 110, piezoresistive silicon sensor and solid-state
Palldium alloy thin film sensor is connected through a screw thread band outer-hexagonal plug 340, and band outer-hexagonal plug 340 is for being tightened to oiling
Kong Shang.The wireless sensing device 100 of the present invention is mounted in the metal expander above oil-immersed current transformer, substitution is former
The oil filler plug come.On the one hand piezoresistive silicon sensor passes through the temperature of the gas in 316 stainless steel direct metal expanders.It is another
Aspect, in the case of few oil, the volume in metal expander will increase, when there is not partial discharge generation gas, gas pressure
Power can be reduced, and the case where negative pressure occur, oil amount determination can be reduced simultaneously according to gas pressure is measured also.Density of hydrogen measurement module
It can measure H in mutual inductor internal gas2Concentration, pass through gas temperature increase, pressure increase and H2Concentration judges that equipment may go out
Now electric discharge and overheat lead to internal generation bulk gas.It, can by the way that wireless sensing device 100 and sampling oil filler plug to be integrally designed
Need not in addition design installation site on high pressure oil immersion current transformer, it also need not in addition connect up, not destory the scene
Equipment, installation is simple, convenient disassembly.
Embodiment 2：
As shown in figure 4, the embodiment of the present invention provides a kind of wireless detecting system, include that the wireless sensing of embodiment 1 such as fills
100 are set, further includes wireless receiving converter 410, wireless relay apparatus 420, radio network gateway 220, serial server 230 and display
Module 210；
Wireless receiving converter connects the first mode wireless signal of 410 receipts radio receiving transmitting modules 150 transmission, and is converted to the
Two modes wireless signal is simultaneously sent to wireless relay apparatus 420；
Wireless relay apparatus 420 receives the second mode wireless signal that wireless receiving converter 410 is sent, and is sent to nothing
Gauze closes 220；
Radio network gateway 220 connects serial server 230 by serial port data line, and serial server 230 connects the display
Module 210.
Wireless detecting system provided in an embodiment of the present invention is detected applied to high pressure oil immersion current transformer,
It can detect in real time to find whether break down in current transformer in time, to overcome existing detection device timely
Detection, but just to recognize when metal expander has deformed upon and have occurred that failure.Meanwhile by the way that wireless receiving and dispatching is arranged
Temperature detection signal value and pressure detecting signal value are transferred to server by module 150, need not arrange personnel that scene is gone to patrol again
Inspection, both saves manpower, also improves efficiency.
Wireless receiving converter 410 receives the first mode wireless signal that radio receiving transmitting module 150 is sent, and is converted to nothing
Gauze closes 220 receivable second mode wireless signals and is sent to radio network gateway 220.By the way that wireless receiving converter is arranged
410, it may be convenient to realize the wireless communication between radio receiving transmitting module 150 and radio network gateway 220, avoid radio receiving transmitting module
Between 150 and radio network gateway 220 because signal mode it is inconsistent caused by communication issue.I.e. radio receiving transmitting module 150 can root
According to needing to select suitable first mode wireless signal, radio network gateway 220 that can also be arranged as required to second mode wireless communication
Number.Increase the use scope of system.As radio receiving transmitting module 150 can be transferred data to by the Radio Link of 433MHz
Wireless receiving converter 410, wireless receiving converter 410 again by other network formats, as GPRS network, GSM network,
Cdma network, 3G, 4G network or MESH network are sent to radio network gateway 220.
Transformed wireless signal can be conveyed directly to radio network gateway by wireless receiving converter 410 by MESH network
220.In a kind of preferred embodiment, wireless receiving converter 410 is passed through transformed wireless signal by MESH network
Wireless relay apparatus 420 transmits.The distance that wireless relay apparatus 420 can be transmitted as needed is configured, and passes through MESH
The single-stage transmission range of network can reach 500 meters, at most could be provided as relaying by eight times, that is, eight wireless relay are arranged
Equipment 420.After wireless relay apparatus 420 is received and forwarded by signal, it is finally sent to radio network gateway 220, radio network gateway
220 are connected to serial server 230 by RS485 serial port data lines or Ethernet data line.Serial server 230 will count again
It is shown according to display module 210 is transmitted to.Display module 210 can make computer terminal, can also make liquid crystal display or
It is liquid crystal curtain wall.
Serial server 230 is by temperature information, pressure information, density of hydrogen information and preset temperature threshold, pressure threshold
Value and density of hydrogen threshold value comparison, if temperature information is more than temperature threshold and/or the pressure information value is more than preset first
Pressure threshold is either less than preset second pressure threshold value or density of hydrogen information is more than density of hydrogen threshold value, then sends out report
Alert information.
Operational system can also be set on computer terminal, what operational system storage and display serial server 230 were read
Data, it is dense by comparing temperature information, pressure information, hydrogen by the way that temperature threshold, pressure threshold and density of hydrogen threshold value is arranged
Degree information and the size of preset temperature threshold, pressure threshold and density of hydrogen threshold value carry out analyzing and diagnosing output diagnostic result.Its
The process compared can be as follows：
Conditions for diagnostics sets a temperature alarming value T, sets air pressure upper limit value Pgh, sets air pressure lower limiting value
Pgl, setting oil pressure lower limiting value Pol.
Temperature is excessively high：When equipment failure adstante febre, wireless sensing device 100 transfers out collected temperature
Afterwards, operational system is by judging that temperature is obtained higher than setting temperature upper limit【High temperature】Failure；
Air pressure is excessively high：When occurring overheat electric discharge or partial discharge inside equipment, bulk gas is will produce, gas concentrates on gold
Belong to air pressure in expander will increase, operational system receives atmospheric pressure value and atmospherically obtains in limited time more than setting【Air pressure is high】Failure；
Oil pressure is too low：Pressure sensor 120 is mounted in the oil filler plug position of high pressure oil immersion current transformer bottom, according to pressure
Strong formula P=ρ gh, after there is few oil, oily depth h can be reduced, and other parameters are constant, and corresponding pressure can reduce, and work as pressure
It can determine whether occur when force value is less than setting oil pressure lower limit【Few oil】The case where
Air pressure is too low：When there is few oily situation, the gas in metal expander is constant, and volume increases, and air pressure can reduce,
It can also be obtained when by judging that air pressure is crossed less than air pressure lower limit【Few oil】The case where carry out dual judgement.
Further include alarm in a kind of preferred embodiment, alarm connects serial server 230, for receiving string
The alarm signal of mouthful server 230, and make a sound or light warning signal, sound and light warning letter can also be simultaneously emitted by
Number.By the way that alarm is arranged, can have by comparing discovery temperature, pressure or hydrogen information alert in serial server 230
When failure occurs, alarm signal is sent out by alarm, to remind relevant staff to carry out troubleshooting.
Wireless router 430 and handheld terminal 440 can also be set, and serial server 230 is connected by wireless router 430
Connect handheld terminal 440.Serial server 230 can be by wireless router 430 by the temperature of high pressure oil immersion current transformer
Information, pressure information, hydrogen content information are forwarded to handheld terminal 440 by wireless router 430, such as mobile phone, tablet computer
Or the handheld monitor terminal specially designed.It can facilitate staff that can receive relevant information in a certain range, side
Just the case where notifying staff's equipment in time, and when situation occurs in equipment, facilitate staff's timely processing failure.
The above embodiment is only the preferred embodiment of the present invention, and the scope of protection of the present invention is not limited thereto,
The variation and replacement for any unsubstantiality that those skilled in the art is done on the basis of the present invention belong to institute of the present invention
Claimed range.
Claims (10)
1. a kind of wireless sensing device is detected applied to high pressure oil immersion current transformer, which is characterized in that including temperature
Spend sensor, pressure sensor, signal processing unit, sensor main control unit and radio receiving transmitting module, the temperature sensor
It is separately connected the signal processing unit with pressure sensor, the signal processing unit connects sensor main control unit, described
Sensor main control unit connects radio receiving transmitting module；
The temperature that the temperature sensor is used to that the temperature in high pressure oil immersion current transformer to be detected and will be detected
Detection signal is sent to the signal processing unit；
The pressure that the pressure sensor is used to that the pressure in high pressure oil immersion current transformer to be detected and will be detected
Detection signal is sent to the signal processing unit；
The signal processing unit, and will treated temperature for handling temperature detection signal and pressure detecting signal
Detected signal value and pressure detecting signal value are sent to sensor main control unit；
The sensor main control unit is for receiving temperature detection signal value and pressure detecting after signal processing unit processes
Signal value, and sent by radio receiving transmitting module.
2. device as described in claim 1, which is characterized in that further include power module, the power module connects the biography
Sensor main control unit, the sensor main control unit connect the temperature sensor, the sensor master control list by IO1 interfaces
Member connects the pressure sensor by IO2 interfaces, and the sensor main control unit is connected respectively by the signal processing unit
Jointing temp sensor data acquisition mouth and pressure sensor data acquisition port.
3. device as claimed in claim 2, which is characterized in that the signal processing unit includes filter and analog-to-digital conversion
Device；
The temperature in high pressure oil immersion current transformer that the filter is used to detect temperature sensor and pressure sensor
Degree detection signal and pressure detecting signal are filtered；
The analog-digital converter is used to turn the filter filtering temperature detection signal that treated simulates and pressure detecting signal
It is changed to the temperature detection signal and pressure detecting signal of number.
4. device as claimed in claim 2, which is characterized in that the sensor main control unit includes memory and processor,
The memory is stored with the temperature detection data and the pressure that executable computer program and the temperature sensor detect
Force snesor detects that pressure detection data, the processor are used to call the computer stored in the memory to can perform journey
Sequence simultaneously realizes following method for managing power supply：
Data acquire energizing step：When the preset data acquisition intervals time arrives, sent by IO1 interfaces and IO2 interfaces
High level opens the confession of the temperature sensor and pressure sensor gathered data to the temperature sensor and pressure sensor
Electric port；And receiving the temperature detection signal and pressure detecting signal that the temperature sensor and pressure sensor detect
When, low level is sent to the temperature sensor and pressure sensor by IO1 interfaces and IO2 interfaces, the temperature is closed and passes
The supply port of sensor and pressure sensor gathered data；
Data processing energizing step：Call the temperature detection signal value and pressure that the last time stored in the memory detects
Detected signal value calculates the temperature between just collected temperature detection signal value and last collected temperature detection signal value
It spends between change in detection signal value and just collected pressure detecting signal value and last collected pressure detecting signal value
Pressure detecting signal changing value, and judge the temperature detection signal changing value whether be less than preset temperature change threshold value,
Whether it is less than preset pressure change threshold value with the pressure detecting signal changing value, if so, controlling the sensor master control
Unit enters low-power consumption mode, otherwise, sends the temperature detection signal value just detected by the radio receiving transmitting module immediately
With pressure detecting signal value.
5. device as claimed in claim 4, which is characterized in that the data processing energizing step further includes：
When judging that the temperature detection signal changing value is less than preset temperature change threshold value and the pressure detecting signal and changes
After value is less than preset pressure change threshold value, judge whether to data transmission interval time, if having arrived data transmission interval time,
The just collected temperature detection signal value and the pressure detecting signal value are sent, otherwise, into low-power consumption mode.
6. device as claimed in claim 5, which is characterized in that the data processing energizing step is judging whether to data to send out
Before sending interval time, further include：
Judge whether the just collected temperature detection signal value is less than preset temperature threshold and the just collected pressure
Whether power detected signal value is more than preset first pressure threshold value, or is less than preset second pressure threshold value, if it is, after
It is continuous to judge whether to data transmission interval time, otherwise, just collected temperature detection signal value and the pressure are sent immediately
Detected signal value.
7. the device as described in claim 1 to 6, which is characterized in that the wireless sensing device is set as being mounted on high pressure oil
The sampling valve plug of immersion current transformer bottom, including upper casing, sealing ring, the pcb board for being set as sensor main control unit, signal
Processing unit, lower casing, temperature sensor, pressure sensor and with outer-hexagonal plug, the pcb board and signal processing unit pass through
Sealing ring sealing is fixed between the upper casing and lower casing, and the temperature sensor and pressure sensor are connected through a screw thread described
Band outer-hexagonal plug, the band outer-hexagonal plug is for being tightened to sampling valve aperture of door.
8. the device as described in claim 1 to 6, which is characterized in that the wireless sensing device is set as swollen mounted on metal
Oil filler plug in swollen device, including upper casing, sealing ring, the pcb board for being set as sensor main control unit, signal processing unit, lower casing,
Temperature sensor, pressure sensor and with outer-hexagonal plug, the pcb board and signal processing unit pass through sealing ring sealing fix
Between the upper casing and lower casing, the temperature sensor and pressure sensor are connected through a screw thread the band outer-hexagonal plug,
The band outer-hexagonal plug is for being tightened to oil filler point.
9. a kind of wireless detecting system is detected applied to high pressure oil immersion current transformer, which is characterized in that including such as
Any wireless sensing device of claim 1 to 8, further includes wireless receiving converter, wireless relay apparatus, wireless network
Pass, serial server and display module；
The wireless receiving converter receives the first mode wireless signal that radio receiving transmitting module is sent, and is converted to second mode
Wireless signal is simultaneously sent to the wireless relay apparatus；
The wireless relay apparatus receives the second mode wireless signal that the wireless receiving converter is sent, and is sent to described
Radio network gateway；
The radio network gateway connects the serial server by serial port data line, and the serial server connects the display mould
Block.
10. system as claimed in claim 9, which is characterized in that further include wireless router and handheld terminal, the serial ports clothes
Business device passes through the wireless router and connects the handheld terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810224335.XA CN108318849A (en) | 2018-03-19 | 2018-03-19 | A kind of wireless sensor device and wireless detecting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810224335.XA CN108318849A (en) | 2018-03-19 | 2018-03-19 | A kind of wireless sensor device and wireless detecting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108318849A true CN108318849A (en) | 2018-07-24 |
Family
ID=62898634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810224335.XA Pending CN108318849A (en) | 2018-03-19 | 2018-03-19 | A kind of wireless sensor device and wireless detecting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108318849A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109668605A (en) * | 2019-02-19 | 2019-04-23 | 南昌科晨电力试验研究有限公司 | A kind of inversed current transformer oil level monitoring arrangement and method |
| 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 |
| CN110631762A (en) * | 2019-11-01 | 2019-12-31 | 国网江苏省电力有限公司电力科学研究院 | Method for determining internal pressure criterion for mutual inductor fault early warning |
| CN110906973A (en) * | 2019-10-28 | 2020-03-24 | 国家电网有限公司 | System and method for monitoring oil-immersed power element |
| CN111006739A (en) * | 2019-11-25 | 2020-04-14 | 江苏智冷物联技术有限公司 | Sensor, Dewar flask and data sending method |
| CN111982194A (en) * | 2020-08-18 | 2020-11-24 | 成都一通密封股份有限公司 | Wireless pressure and temperature integrated sensor |
| CN112179945A (en) * | 2019-07-01 | 2021-01-05 | 上海梅山钢铁股份有限公司 | Device and method for on-line monitoring of furnace wall defects of high-temperature reaction furnace |
| CN112557989A (en) * | 2020-11-12 | 2021-03-26 | 珠海一多监测科技有限公司 | Online monitoring and diagnosing method for number of mols of gas molecules of current transformer |
| CN113138360A (en) * | 2021-04-17 | 2021-07-20 | 宁波北仑涌和集装箱码头有限公司 | Hall current transformer measurement monitoring method, system, terminal and storage medium |
| CN113237514A (en) * | 2021-05-21 | 2021-08-10 | 信阳清源智联信息科技有限公司 | Low-power-consumption fluid temperature and pressure measuring device based on Internet of things and data transmission method thereof |
| CN113790758A (en) * | 2021-09-16 | 2021-12-14 | 国网江苏省电力有限公司盐城供电分公司 | Early warning device for mutual inductor fault |
| CN115540949A (en) * | 2022-10-26 | 2022-12-30 | 浙江和夏科技股份有限公司 | Temperature-pressure integrated wireless signal acquisition box |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202794373U (en) * | 2012-07-20 | 2013-03-13 | 特变电工康嘉(沈阳)互感器有限责任公司 | Device for monitoring overpressure of oil-immersed transformer online |
| CN103745586A (en) * | 2014-01-10 | 2014-04-23 | 北京必创科技有限公司 | Data acquisition device |
| CN104964725A (en) * | 2015-06-11 | 2015-10-07 | 国家电网公司 | Inverted-type current transformer oil level monitoring method |
| CN107576443A (en) * | 2017-10-12 | 2018-01-12 | 西安亚能电气有限责任公司 | Pressure on-line monitoring system for 750kV high-tension insulating bushings |
| CN208847830U (en) * | 2018-03-19 | 2019-05-10 | 国网新疆电力有限公司 | A kind of wireless sensor device and wireless detecting system |
-
2018
- 2018-03-19 CN CN201810224335.XA patent/CN108318849A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202794373U (en) * | 2012-07-20 | 2013-03-13 | 特变电工康嘉(沈阳)互感器有限责任公司 | Device for monitoring overpressure of oil-immersed transformer online |
| CN103745586A (en) * | 2014-01-10 | 2014-04-23 | 北京必创科技有限公司 | Data acquisition device |
| CN104964725A (en) * | 2015-06-11 | 2015-10-07 | 国家电网公司 | Inverted-type current transformer oil level monitoring method |
| CN107576443A (en) * | 2017-10-12 | 2018-01-12 | 西安亚能电气有限责任公司 | Pressure on-line monitoring system for 750kV high-tension insulating bushings |
| CN208847830U (en) * | 2018-03-19 | 2019-05-10 | 国网新疆电力有限公司 | A kind of wireless sensor device and wireless detecting system |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109668605A (en) * | 2019-02-19 | 2019-04-23 | 南昌科晨电力试验研究有限公司 | A kind of inversed current transformer oil level monitoring arrangement and method |
| 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 |
| CN112179945A (en) * | 2019-07-01 | 2021-01-05 | 上海梅山钢铁股份有限公司 | Device and method for on-line monitoring of furnace wall defects of high-temperature reaction furnace |
| CN110906973A (en) * | 2019-10-28 | 2020-03-24 | 国家电网有限公司 | System and method for monitoring oil-immersed power element |
| CN110631762A (en) * | 2019-11-01 | 2019-12-31 | 国网江苏省电力有限公司电力科学研究院 | Method for determining internal pressure criterion for mutual inductor fault early warning |
| CN110631762B (en) * | 2019-11-01 | 2021-06-15 | 国网江苏省电力有限公司电力科学研究院 | Method for determining internal pressure criterion for mutual inductor fault early warning |
| CN111006739A (en) * | 2019-11-25 | 2020-04-14 | 江苏智冷物联技术有限公司 | Sensor, Dewar flask and data sending method |
| CN111006739B (en) * | 2019-11-25 | 2021-09-10 | 江苏智冷物联技术有限公司 | Sensor, Dewar flask and data sending method |
| CN111982194A (en) * | 2020-08-18 | 2020-11-24 | 成都一通密封股份有限公司 | Wireless pressure and temperature integrated sensor |
| CN112557989A (en) * | 2020-11-12 | 2021-03-26 | 珠海一多监测科技有限公司 | Online monitoring and diagnosing method for number of mols of gas molecules of current transformer |
| CN113138360A (en) * | 2021-04-17 | 2021-07-20 | 宁波北仑涌和集装箱码头有限公司 | Hall current transformer measurement monitoring method, system, terminal and storage medium |
| CN113237514A (en) * | 2021-05-21 | 2021-08-10 | 信阳清源智联信息科技有限公司 | Low-power-consumption fluid temperature and pressure measuring device based on Internet of things and data transmission method thereof |
| CN113790758A (en) * | 2021-09-16 | 2021-12-14 | 国网江苏省电力有限公司盐城供电分公司 | Early warning device for mutual inductor fault |
| CN115540949A (en) * | 2022-10-26 | 2022-12-30 | 浙江和夏科技股份有限公司 | Temperature-pressure integrated wireless signal acquisition box |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108318849A (en) | A kind of wireless sensor device and wireless detecting system | |
| CN208171323U (en) | A kind of high pressure oil immersion current transformer detection system | |
| CN201937337U (en) | Comprehensive monitoring system for power tunnel | |
| CN111474119A (en) | Transformer insulating oil photoacoustic spectrum on-line monitoring system | |
| CN206805742U (en) | A kind of cooking apparatus comprehensive safety controls alarm | |
| CN111276927A (en) | Cable intermediate joint monitoring and protecting device and system based on CT power taking and application method | |
| CN111812550A (en) | Safety monitoring management platform of transformer substation | |
| CN202210709U (en) | Distribution transformer real time monitoring system | |
| CN103071269A (en) | Novel automatic fire-fighting terminal water testing system | |
| CN109210269A (en) | A kind of water hammer-resistant air valve of band monitoring system | |
| CN207074246U (en) | A kind of GIS partial discharge on-line monitoring system | |
| CN109637091A (en) | Sulfur hexafluoride gas leakage monitoring system based on Internet of Things | |
| CN204044977U (en) | A kind of wireless alarming in short range of electric power formula ground wire | |
| CN208847830U (en) | A kind of wireless sensor device and wireless detecting system | |
| CN209056043U (en) | A kind of active kitchen safety monitoring system | |
| CN203258379U (en) | Gas valve well monitoring and warning device | |
| CN206114798U (en) | Electrical equipment failure diagnostic device | |
| CN211555077U (en) | Configurable Internet of things composite fire detection alarm and system | |
| CN205912081U (en) | Physics and chemistry laboratory remote control and measurement system | |
| CN210221956U (en) | Intelligent gas remote monitoring terminal | |
| CN209372807U (en) | A kind of environmental protection detection device | |
| CN102798416A (en) | Monitoring system for power environment in machine room | |
| CN205580982U (en) | Monitored control system based on infrared gas detector | |
| CN109031063A (en) | Based on SF6Gas-insulated class fault remote monitors system and method | |
| CN211062177U (en) | Special equipment monitoring system based on BIM technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |