CN109633396A - A kind of apparatus insulated defect on-line monitoring system of the few oil of electric power and method - Google Patents
A kind of apparatus insulated defect on-line monitoring system of the few oil of electric power and method Download PDFInfo
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- CN109633396A CN109633396A CN201910086993.1A CN201910086993A CN109633396A CN 109633396 A CN109633396 A CN 109633396A CN 201910086993 A CN201910086993 A CN 201910086993A CN 109633396 A CN109633396 A CN 109633396A
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
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Abstract
The present invention relates to a kind of apparatus insulated defect on-line monitoring system of the few oil of electric power and methods, system includes: on-Line Monitor Device, for acquiring temperature relevant to the few apparatus insulated defect of oil of electric power, pressure, Wei Shui, hydrogen content data, and data center is sent to by the way of Internet of Things；On-Line Monitor Device includes sensing acquisition unit, power supply unit, communication unit, CPU element and circuit unit；Data center includes host computer, data storage server, cloud data-in port；Host computer includes trouble-shooter；Trouble-shooter, the data for being sent back according to on-Line Monitor Device carry out diagnosis and fault pre-alarming to the insulation situation of institute's monitoring device；User terminal module, for checking that data, including data show, report that transmission, picture upload, warning information confirms function whenever and wherever possible.This system cost performance is high, easy for installation, reliable and stable, it can be achieved that the electrification of the few apparatus insulated defect of oil of electric power is monitored on-line.
Description
Technical field
The present invention relates to power system device monitoring technical fields, exhausted more specifically to a kind of few oily equipment of electric power
Edge defect on-line monitoring system and method.
Background technique
Bushing shell for transformer, oil-immersed current transformer, voltage transformer, oily formula reactor, oily formula capacitor, oily formula open circuit
The few oily equipment of the electric power such as device is widely used in China's electric system, may be gone out inside the few oily equipment of electric power in longtime running
Existing shelf depreciation, oil overheat, the failures such as electric arc, spark discharge in oil, if initial failure defect cannot can be after by timely discovery
Continuous deterioration then may cause apparatus insulated breakdown, performance decline, or even the considerable safeties thing such as rupture, explosion, on fire occurs
Therefore.Therefore, the insulation status of the few oily equipment of electric power is monitored, in equipment there are when hidden danger defect, fast and accurately to it
It is diagnosed and is assessed, it is significant to the safe operation of power grid.
Currently, Operation of Electric Systems personnel generally use artificial regular visit and testing inspection to the detection of such equipment,
Detection method mainly has dielectric oil chromatographic analysis, Partial Discharge Detection, infrared measurement of temperature, pulse current method etc., these method efficiency
It is low, the period is long, be difficult to realize electrification on-line monitoring.Currently, almost not having for effective on-line monitoring of the few oily equipment of electric power
Have, traditional detection means are mainly oil colours spectrometry and end shield earth current method.Oil chromatography detection method the problem is that: due to electricity
Oil mass is few inside the few oily equipment of power, and oil chromatography detection method practical application needs to oil-filled while taking oil, may bring equipment
Sealing and negative pressure problem, and oil chromatogram analysis instrument is expensive, volume is big, detection cycle is long, needs Oil-gas Separation；End shield connects
Earth-current method the problem is that, poor anti jamming capability, accuracy and sensitivity are low.
The few oily equipment of electric power because its oil mass is few, quantity is more, be widely used the characteristics of, the oil colours of traditional transformer heavy wool equipment
Spectrum analysis instrument can not be applied to the on-line monitoring of the few oily equipment of electric power, it may be said that the on-line monitoring of the few apparatus insulated defect of oil of electric power
For blank out, therefore, be badly in need of it is a kind of it is small in size, cost performance is high, the few oily equipment on-line prison of easy for installation, reliable and stable electric power
Examining system.
Summary of the invention
The technical problem to be solved in the present invention is that in view of the above drawbacks of the prior art, a kind of electric power is provided lacks oil and set
Standby insulation defect on-line monitoring system and method, can be realized bushing shell for transformer, oil-immersed current transformer, mutual induction of voltage
The initial failure monitoring and early warning of the few oily equipment of the electric power such as device, oily formula reactor, oily formula capacitor, oily formula breaker, have peace
Dress is convenient, cost performance is high, monitoring effect is reliable, can charge the features such as on-line monitoring.
The technical solution adopted by the present invention to solve the technical problems is:
Construct a kind of few apparatus insulated defect on-line monitoring system of oil of electric power, wherein include:
On-Line Monitor Device, for acquiring temperature relevant to the few apparatus insulated defect of oil of electric power, pressure, Wei Shui, hydrogen
Content data, and data center is sent to by Internet of Things net mode；
The on-Line Monitor Device includes sensing acquisition unit, power supply unit, communication unit, CPU element and circuit
Unit；
The data center includes host computer, data storage server, cloud data-in port；The host computer includes
Trouble-shooter；
Trouble-shooter, data for being sent back according to on-Line Monitor Device to the insulation situation of institute's monitoring device into
Row diagnosis and fault pre-alarming；
User terminal module, for checking that the data monitored, including data show, report transmission, picture whenever and wherever possible
It uploads, warning information confirms function.
On-line monitoring system of the present invention, wherein the trouble-shooter includes:
Data processing unit is sent to cloud by Internet of Things net mode for being according to fixed format packaged obtained data
End data center, the data center calculate temperature, temperature according to the corresponding measurement data of each group of monitoring device ID, extraction
Change rate, pressure, pressure change rate, relative humidity, hydrogen content, hydrogen change rate, the putting equipment in service time limit, oil mass volume characteristic
Parameter；
Data diagnosis unit, the characteristic parameter comprehensive descision monitoring electric power for being extracted according to the data center lack oil and set
Standby state of insulation, main judgment basis are as follows: when temperature is larger, and continue for some time, pressure is larger, and hydrogen content is not high
When, it is judged as thermal fault；When temperature is higher in short-term, pressure rapid increase, when hydrogen content rapid increase, be judged as electric arc therefore
Barrier；When relative humidity is larger, when hydrogen content is higher, it is judged as that oil makes moist；
Warning note unit is indicated for electric power to be lacked the apparatus insulated defect of oil with Probability Forms, when diagnostic result is crossed
When alarm limits, start sound-light alarm, and send information to the user terminal module.
On-line monitoring system of the present invention, wherein the on-Line Monitor Device is threeway flange arrangement, and described
The few oily equipment of electric power takes oil valve door integrated design；
One of interface of the on-Line Monitor Device takes hydraulic fluid port to connect with the few oily equipment of the electric power, another connects
Mouth is connect with sensor, and third interface is outlet and is provided with valve switch.
On-line monitoring system of the present invention, wherein the sensing acquisition unit includes: temperature sensor, pressure
Force snesor, humidity sensor, hydrogen gas sensor；
The temperature sensor uses DS18B20 temperature sensor, and the humidity sensor uses polymer thin membrane capacitance
Type sensor, the hydrogen gas sensor use palladium-nickel alloy film-type hydrogen gas sensor.
On-line monitoring system of the present invention, wherein said supply unit uses dry cell power supply, or using lithium electricity
Pond power supply or induction way to take power.
On-line monitoring system of the present invention, wherein the communication unit uses short-distance wireless communication mode, data
It accesses substation and monitors platform CAC and PMS system on-line；
Alternatively, the communication unit uses Internet of Things net mode, data access cloud platform.
On-line monitoring system of the present invention, wherein the Internet of Things net mode specifically:
It is compatible with LTE cellular network standards using narrowband Internet of Things NB-IoT mode；
Alternatively, using bluetooth, ZigBee, 802.15.4, Weightless-N, Wi-Fi, LTECat0/1.
On-line monitoring system of the present invention, wherein the circuit unit includes: sensor signal conversion circuit, number
According to acquisition control circuit, power circuit and wireless antenna；
The wireless antenna is concealed antenna, and antenna annular is arranged in inside device, and is connect with circuit board, for increasing
Strong wireless communication signal quality.
On-line monitoring system of the present invention, wherein the data center for handling and show monitoring data, including
The displaying and inquiry of temperature, pressure, Wei Shui, the historical variations curve of hydrogen, change rate, current value, device id data information, it is right
Institute's monitoring device interior insulation situation is analyzed and is assessed, and defect early warning is sent.
The present invention also provides a kind of few apparatus insulated defect on-line monitoring methods of oil of electric power, wherein the following steps are included:
Acquisition temperature relevant to the few apparatus insulated defect of oil of electric power, pressure, Wei Shui, hydrogen content data, and pass through object
Networking mode is sent to data center；
According to the corresponding measurement data of each group of monitoring device ID, extraction calculates temperature, rate of temperature change, pressure, pressure
Power change rate, relative humidity, hydrogen content, hydrogen change rate, the putting equipment in service time limit, oil mass volume characteristic parameter；
The state of insulation of the few oily equipment of electric power, main criterion are monitored according to extracted characteristic parameter comprehensive descision are as follows:
It when temperature is larger, and continues for some time, pressure is larger, when hydrogen content is not high, is judged as thermal fault；When temperature in short-term compared with
Height, pressure rapid increase when hydrogen content rapid increase, are judged as arc fault；When relative humidity is larger, hydrogen content is higher
When, it is judged as that oil makes moist；
Diagnosis and fault pre-alarming are carried out according to insulation situation of the judging result to institute's monitoring device, and send information to user
Terminal module.
The beneficial effects of the present invention are: can be realized bushing shell for transformer, oil-immersed current transformer, voltage transformer,
The initial failure monitoring and early warning of the few oily equipment of the electric power such as oily formula reactor, oily formula capacitor, oily formula breaker, have installation side
Just, cost performance is high, monitoring effect is reliable, can charge the features such as on-line monitoring.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below in conjunction with attached drawing and reality
Applying example, the invention will be further described, and the accompanying drawings in the following description is only section Example of the invention, for this field
For those of ordinary skill, without creative efforts, it can also be obtained according to these attached drawings other accompanying drawings:
Fig. 1 is the few apparatus insulated defect on-line monitoring system functional block diagram of oil of electric power of present pre-ferred embodiments；
Fig. 2 is the few apparatus insulated defect on-line monitoring method flow chart of oil of electric power of present pre-ferred embodiments.
Specific embodiment
In order to keep the purposes, technical schemes and advantages of the embodiment of the present invention clearer, implement below in conjunction with the present invention
Technical solution in example carries out clear, complete description, it is clear that and described embodiment is section Example of the invention, and
It is not all of embodiment.Based on the embodiment of the present invention, those of ordinary skill in the art are not before making the creative labor
Every other embodiment obtained is put, protection scope of the present invention is belonged to.
As shown in Figure 1, a kind of few apparatus insulated defect on-line monitoring system of oil of electric power, include: on-Line Monitor Device is used for
Acquisition temperature relevant to the few apparatus insulated defect of oil of electric power, pressure, Wei Shui, hydrogen content data, and pass through Internet of Things net mode
It is sent to data center；On-Line Monitor Device includes sensing acquisition unit, power supply unit, communication unit, CPU element and electricity
Road unit；Data center includes host computer, data storage server, cloud data-in port；Host computer includes fault diagnosis
Device；Trouble-shooter, the data for being sent back according to on-Line Monitor Device carry out the insulation situation of institute's monitoring device
Diagnosis and fault pre-alarming；User terminal module, for checking that the data monitored, including data show, report hair whenever and wherever possible
It send, picture uploads, warning information confirmation function, for example, user terminal APP.It is supervised online using the few apparatus insulated defect of oil of this electric power
Examining system, can be realized bushing shell for transformer, oil-immersed current transformer, voltage transformer, oily formula reactor, oily formula capacitor,
The initial failure monitoring and early warning of the few oily equipment of the electric power such as oily formula breaker, have easy for installation, cost performance is high, monitoring effect can
It leans on, the features such as on-line monitoring can be charged.
In the present embodiment, for monitoring certain 110kV bushing shell for transformer, on-Line Monitor Device is threeway flange arrangement, is passed
Sensor, control circuit and oil valve integrated design is taken, flange-interface size takes hydraulic fluid port in the same size with casing original.One interface with
Take hydraulic fluid port to connect, another interface is connect with sensor, facilitate sensor directly to contact with oil, third interface for outlet and
There is valve switch, valve switch keeps normally off.Entire on-Line Monitor Device had not only remained the former function of taking hydraulic fluid port, but also can be real
Existing sensor is monitored the insulating oil of casing.One transformer monitoring, three casings, then three casings are respectively mounted online prison
Device is surveyed, every monitoring device designs a unique ID, which is the voucher that its data sends and reads, and packaged data include should
ID number.
Such design does not change original equipment structure, directly takes hydraulic fluid port using original equipment, and sensor can be contacted directly with oil, surveys
It is more accurate to measure；When the few oily equipment of certain electric power does not leave and take hydraulic fluid port in advance, a circle can be opened in the position that device bottom leads to oil
Mouthful, on-Line Monitor Device is installed, and carry out sealing.
In above-described embodiment, trouble-shooter includes: data processing unit, is used for obtained data according to fixed grating
Formula is packaged, and is sent to cloud data center by Internet of Things net mode, the data center is corresponding according to each group of monitoring device ID
Measurement data, extraction calculate temperature, rate of temperature change, pressure, pressure change rate, relative humidity, hydrogen content, hydrogen become
Rate, the putting equipment in service time limit, oil mass volume characteristic parameter；Data diagnosis unit, the spy for being extracted according to the data center
Levy the state of insulation of the few oily equipment of parameter comprehensive descision monitoring electric power, main judgment basis are as follows: when temperature is larger, and continue one
The section time, pressure is larger, when hydrogen content is not high, is judged as thermal fault；When temperature is higher in short-term, pressure rapid increase, hydrogen
When content rapid increase, it is judged as arc fault；When relative humidity is larger, when hydrogen content is higher, it is judged as that oil makes moist；Report
Alert prompt unit is indicated for electric power to be lacked the apparatus insulated defect of oil with Probability Forms, when diagnostic result crosses alarm limits,
Start sound-light alarm, and send information to the user terminal module.
In the present embodiment, the sensing acquisition unit of on-Line Monitor Device includes temperature sensor, pressure sensor, wet
Sensor, hydrogen gas sensor are spent, temperature sensor uses DS18B20 temperature sensor, measurement range: 125 DEG C of -50~﹢, differentiated
0.25 DEG C of rate, precision ± 1.Pressure sensor uses membrane-type pressure sensors, and sensor forms by two layers, one layer of outside for every
From protective film, pressure sensor measurement range are as follows: 0~10Mpa carries out zero point and spirit between temperature sensor and pressure sensor
Sensitivity temperature-compensating, humidity sensor use thin polymer film capacitance type transducers, and hydrogen gas sensor uses palladium-nickel alloy film
Type hydrogen gas sensor, measurement range are as follows: 20uL/L~5000uL/L, sensor are placed in oil and carry out seal isolation.
In the present embodiment, power supply unit preferably uses dry cell power supply, and on-Line Monitor Device reserves battery case space, electricity
There is electric quantity display circuit in pond, easy to disassemble, inspires confidence in No. 5 battery power supplies using two section south.
Power supply unit, can also be used lithium battery power supply or induction way to take power is pacified in this way preferably with offline way to take power
Dress is convenient, therefore it is required that each sensor and circuit module power consumption want low.
Communication unit is using short-distance wireless communication mode there are two types of scheme, scheme one, and data access substation is online
Monitoring platform CAC and PMS system；Scheme two is by the way of Internet of Things, which kind of mode is data access cloud platform specifically use
Determine depending on the convenience of monitoring device position and local communication transmission.
In the present embodiment, communication scheme is by the way of Internet of Things, data access cloud platform, the requirement of Internet of Things net mode
Are as follows: low-power consumption, low cost, long transmission distance, message transmission rate are high.
Preferably, the present invention uses narrowband Internet of Things NB-IoT mode, compatible with LTE cellular network standards, alternative
Internet of Things net mode is bluetooth, ZigBee, 802.15.4, Weightless-N, Wi-Fi, LTECat0/1.NB-IoT is implemented in bee
Nest network only consumes the bandwidth of about 180KHz, GSM network, UMTS network or LTE network can be deployed directly into, with the portion of reducing
It affixes one's name to cost, realize smooth upgrade.The data of on-Line Monitor Device acquisition are transmitted wirelessly by cellular network, to realize online prison
It surveys.
In the present embodiment, CPU element uses MSP430 Microcontrollers and FPGAs.
In the present embodiment, circuit unit includes sensor signal conversion circuit, signal amplification circuit, data acquisition control electricity
Road, power circuit, wireless antenna, wireless antenna are concealed antenna, and antenna annular is arranged in inside device, and are connected with circuit board
It connects, for enhancing wireless communication signal quality.
In the present embodiment, data center includes host computer, data storage server, cloud data-in port；In data
The heart mainly for the treatment of with show monitoring data, including temperature, pressure, Wei Shui, the historical variations curve of hydrogen, change rate, when
The displaying and inquiry of the data informations such as preceding value, device id are analyzed and are assessed to institute's monitoring device interior insulation situation, are sent and are lacked
Fall into early warning.
In another embodiment of the invention, a kind of few apparatus insulated defect on-line monitoring method of oil of electric power is additionally provided,
As shown in Figure 2, comprising the following steps:
Step S10, acquisition temperature relevant to the few apparatus insulated defect of oil of electric power, pressure, Wei Shui, hydrogen content data,
And data center is sent to by Internet of Things net mode；
Step S20, according to the corresponding measurement data of each group of monitoring device ID, extraction calculate temperature, rate of temperature change,
Pressure, pressure change rate, relative humidity, hydrogen content, hydrogen change rate, the putting equipment in service time limit, oil mass volume characteristic parameter；
Step S30, the state of insulation of the few oily equipment of electric power is monitored according to extracted characteristic parameter comprehensive descision, it is main
Criterion are as follows: when temperature is larger, and continue for some time, pressure is larger, when hydrogen content is not high, is judged as thermal fault；Work as temperature
Higher in short-term, pressure rapid increase when hydrogen content rapid increase, is judged as arc fault；When relative humidity is larger, hydrogen contains
When measuring higher, it is judged as that oil makes moist；
Step S40, diagnosis and fault pre-alarming are carried out according to insulation situation of the judging result to institute's monitoring device, concurrently delivered letters
Cease user terminal module.
Using the few apparatus insulated defect on-line monitoring method of oil of this electric power, bushing shell for transformer, oil-immersed current can be realized
The initial failure prison of the few oily equipment of the electric power such as mutual inductor, voltage transformer, oily formula reactor, oily formula capacitor, oily formula breaker
Survey and early warning, have the characteristics that easy for installation, cost performance is high, monitoring effect is reliable, can charge on-line monitoring.
In a specific embodiment, the data that host computer is sent back according to on-Line Monitor Device are to institute's monitoring device
Insulation situation carries out diagnosis and fault pre-alarming, and trouble-shooter carries out fault diagnosis using following steps:
Step 1: taking hydraulic fluid port that on-Line Monitor Device is installed in bushing shell for transformer, power on, log-on data acquires function；
Step 2: monitoring device the data obtained is according to fixed format packaged, and is sent in the data of cloud by Internet of Things net mode
The heart, data transmitting period 10min；
Step 3: data center receives the data that live on-Line Monitor Device is sent back to, and number is written according to the data format of design
According to library, data center systems software is according to the corresponding measurement data of each group of monitoring device ID, and extraction calculates temperature, temperature becomes
The features such as rate, pressure, pressure change rate, relative humidity, hydrogen content, hydrogen change rate, the putting equipment in service time limit, oil mass volume
Parameter；
Step 4: according to the state of insulation for the few oily equipment of characteristic parameter comprehensive descision monitoring electric power that step 3 is extracted, master
Want criterion are as follows: when temperature is larger, and continue for some time, pressure is larger, when hydrogen content is not high, can determine whether as thermal fault；When
Temperature is higher in short-term, pressure rapid increase, when hydrogen content rapid increase, can determine whether as arc fault；When relative humidity is larger,
When hydrogen content is higher, failure of making moist for oil can determine whether；
Criterion set field condition comprehensively utilizes temperature, rate of temperature change, pressure, pressure change rate, relative humidity, hydrogen
Threshold range is arranged in the characteristic parameters such as content, hydrogen change rate, the putting equipment in service time limit, oil mass volume, designs diagnosis algorithm.
Step 5: apparatus insulated defect is indicated with Probability Forms, when diagnostic result crosses alarm limits, starts acousto-optic report
It is alert, and it send information to related operation maintenance personnel mobile phone.
In the present embodiment, the out-of-limit threshold value of apparatus insulated defect alarm is set as 75%, when the possible probability of equipment deficiency is 35%
When following, belong to normal range (NR), can be not processed；When equipment deficiency may probability be 35%~75% when, equipment there may be
Insulation defect is included in continuous observation, and when scheduled overhaul, which should give, to be paid close attention to；When the possible probability of equipment deficiency is greater than 75%
When, the probability to break down is higher, sends warning message, should rush for immediately scene and check reason, carries out prevention defect elimination processing.
Preferably, artificial intelligence mode, such as machine also can be used in the method for diagnosing faults in the various embodiments described above of the present invention
Study and neural network carry out study instruction using big data, large sample according to extracted characteristic parameter and live feedback result
White silk is identified and is classified to failure, is diagnosed to defect level.
Cell phone application and data center work in coordination supplement, are mainly used for data and show and inquiry and alert receipt, correlation
Personnel can check monitoring data whenever and wherever possible, check trend curve, can APP edit report and be sent to data center backstage,
Field Force can upload failure or defect photo with APP, facilitate record case material, be big data analysis reservoir data, scene
Personnel click confirmation after receiving warning information, report result using APP after processing.
It should be understood that for those of ordinary skills, it can be modified or changed according to the above description,
And all these modifications and variations should all belong to the protection domain of appended claims of the present invention.
Claims (10)
1. a kind of few apparatus insulated defect on-line monitoring system of oil of electric power characterized by comprising on-Line Monitor Device is used for
Acquisition temperature relevant to the few apparatus insulated defect of oil of electric power, pressure, Wei Shui, hydrogen content data, and pass through Internet of Things net mode
It is sent to data center；
The on-Line Monitor Device includes sensing acquisition unit, power supply unit, communication unit, CPU element and circuit unit；
The data center includes host computer, data storage server, cloud data-in port；The host computer includes failure
Diagnostic device；
The trouble-shooter, data for being sent back according to on-Line Monitor Device to the insulation situation of institute's monitoring device into
Row diagnosis and fault pre-alarming；
User terminal module, for checking the data monitored whenever and wherever possible, including data are shown, report is sent, picture uploads,
Warning information confirms function.
2. on-line monitoring system according to claim 1, which is characterized in that the trouble-shooter includes:
Data processing unit is sent to cloud number by Internet of Things net mode for being according to fixed format packaged obtained data
According to center, the data center calculates temperature, temperature change according to the corresponding measurement data of each group of monitoring device ID, extraction
Rate, pressure, pressure change rate, relative humidity, hydrogen content, hydrogen change rate, the putting equipment in service time limit, oil mass volume characteristic ginseng
Amount；
Data diagnosis unit, the characteristic parameter comprehensive descision for being extracted according to the data center monitor the few oily equipment of electric power
State of insulation, main judgment basis are as follows: when temperature is larger, and continue for some time, pressure is larger, when hydrogen content is not high,
It is judged as thermal fault；When temperature is higher in short-term, pressure rapid increase when hydrogen content rapid increase, is judged as arc fault；When
Relative humidity is larger, when hydrogen content is higher, is judged as that oil makes moist；
Warning note unit is indicated for electric power to be lacked the apparatus insulated defect of oil with Probability Forms, when diagnostic result crosses alarm
When limit value, start sound-light alarm, and send information to the user terminal module.
3. on-line monitoring system according to claim 1, which is characterized in that the on-Line Monitor Device is threeway flange knot
Structure takes oil valve door integrated design with the electric power few oily equipment；
The few oily equipment of one of interface of the on-Line Monitor Device and the electric power takes hydraulic fluid port to connect, another interface with
Sensor connection, third interface are outlet and are provided with valve switch.
4. on-line monitoring system according to claim 1, which is characterized in that the sensing acquisition unit includes: temperature
Spend sensor, pressure sensor, humidity sensor, hydrogen gas sensor；
The temperature sensor uses DS18B20 temperature sensor, and the humidity sensor uses the capacitive biography of thin polymer film
Sensor, the hydrogen gas sensor use palladium-nickel alloy film-type hydrogen gas sensor.
5. on-line monitoring system according to claim 1, which is characterized in that said supply unit uses dry cell power supply,
Or using lithium battery power supply or induction way to take power.
6. on-line monitoring system according to claim 1, which is characterized in that the communication unit is logical using short-distance wireless
News mode, data access substation monitor platform CAC and PMS system on-line；
Alternatively, the communication unit uses Internet of Things net mode, data access cloud platform.
7. on-line monitoring system according to claim 6, which is characterized in that the Internet of Things net mode specifically:
It is compatible with LTE cellular network standards using narrowband Internet of Things NB-IoT mode；
Alternatively, using bluetooth, ZigBee, 802.15.4, Weightless-N, Wi-Fi, LTE Cat 0/1.
8. on-line monitoring system according to claim 1, which is characterized in that the circuit unit includes: sensor signal
Conversion circuit, data acquiring control circuit, power circuit and wireless antenna；
The wireless antenna is concealed antenna, and antenna annular is arranged in inside device, and is connect with circuit board, for enhancing nothing
Line communication signal quality.
9. on-line monitoring system according to claim 1, which is characterized in that the data center, for handling and showing
Monitoring data, including temperature, pressure, Wei Shui, the historical variations curve of hydrogen, change rate, current value, device id data information
It shows and inquires, institute's monitoring device interior insulation situation is analyzed and assessed, send defect early warning.
10. a kind of few apparatus insulated defect on-line monitoring method of oil of electric power, which comprises the following steps:
Acquisition temperature relevant to the few apparatus insulated defect of oil of electric power, pressure, Wei Shui, hydrogen content data, and pass through Internet of Things
Mode is sent to data center；
According to the corresponding measurement data of each group of monitoring device ID, extraction calculates temperature, rate of temperature change, pressure, pressure and becomes
Rate, relative humidity, hydrogen content, hydrogen change rate, the putting equipment in service time limit, oil mass volume characteristic parameter；
The state of insulation of the few oily equipment of electric power, main criterion are as follows: work as temperature are monitored according to extracted characteristic parameter comprehensive descision
It spends larger, and continues for some time, pressure is larger, when hydrogen content is not high, is judged as thermal fault；When temperature is higher in short-term, pressure
Power rapid increase when hydrogen content rapid increase, is judged as arc fault；When relative humidity is larger, when hydrogen content is higher, sentence
Break and makes moist for oil；
Diagnosis and fault pre-alarming are carried out according to insulation situation of the judging result to institute's monitoring device, and send information to user terminal
Module.
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| CN111007366A (en) * | 2019-12-17 | 2020-04-14 | 武汉拓清科技有限公司 | Oil type casing hidden danger monitoring system and method |
| CN111693093A (en) * | 2020-06-17 | 2020-09-22 | 广西星宇智能电气有限公司 | Electric power oil-lack monitoring and alarming system |
| CN112098780A (en) * | 2019-11-19 | 2020-12-18 | 中国南方电网有限责任公司超高压输电公司贵阳局 | High-voltage converter transformer bushing state monitoring method based on multi-source information fusion |
| CN112484758A (en) * | 2020-11-27 | 2021-03-12 | 内蒙古电力（集团）有限责任公司乌兰察布电业局 | Application of MEMS-based targeted gas-sensitive optical fiber sensing in state detection of oil-poor equipment |
| 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 |
| CN113447781A (en) * | 2021-07-27 | 2021-09-28 | 国网吉林省电力有限公司电力科学研究院 | Pressure-hydrogen-temperature three-in-one comprehensive detection system and detection method for oiled paper condenser type casing |
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| CN114325497A (en) * | 2021-12-27 | 2022-04-12 | 国网江苏省电力有限公司检修分公司 | Multi-parameter high-voltage bushing on-line monitoring device |
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| CN111007366A (en) * | 2019-12-17 | 2020-04-14 | 武汉拓清科技有限公司 | Oil type casing hidden danger monitoring system and method |
| WO2021244296A1 (en) * | 2020-06-02 | 2021-12-09 | 南京瑞贻电子科技有限公司 | Artificial-intelligence-based apparatus and method for monitoring power operating condition by means of internet of things |
| CN111693093A (en) * | 2020-06-17 | 2020-09-22 | 广西星宇智能电气有限公司 | Electric power oil-lack monitoring and alarming system |
| CN112557989B (en) * | 2020-11-12 | 2024-05-28 | 珠海一多监测科技有限公司 | Online monitoring and diagnosing method for molar quantity of gas molecules of current transformer |
| 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 |
| CN112484758A (en) * | 2020-11-27 | 2021-03-12 | 内蒙古电力（集团）有限责任公司乌兰察布电业局 | Application of MEMS-based targeted gas-sensitive optical fiber sensing in state detection of oil-poor equipment |
| CN113447781A (en) * | 2021-07-27 | 2021-09-28 | 国网吉林省电力有限公司电力科学研究院 | Pressure-hydrogen-temperature three-in-one comprehensive detection system and detection method for oiled paper condenser type casing |
| CN113804861A (en) * | 2021-09-15 | 2021-12-17 | 北华大学 | Transformer on-line monitoring and early warning system and method |
| CN114076654A (en) * | 2021-11-12 | 2022-02-22 | 国网江苏省电力有限公司电力科学研究院 | Multi-parameter measuring device and method for hydrogen, pressure and temperature parallel measurement |
| CN114325497A (en) * | 2021-12-27 | 2022-04-12 | 国网江苏省电力有限公司检修分公司 | Multi-parameter high-voltage bushing on-line monitoring device |
| WO2024031855A1 (en) * | 2022-08-12 | 2024-02-15 | 国网电力科学研究院武汉南瑞有限责任公司 | Remote monitoring system for oil and gas in high-voltage bushing |
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