CN110220601A - A kind of high-voltage switch cabinet of transformer substation wireless and passive thermometric monitoring method - Google Patents
A kind of high-voltage switch cabinet of transformer substation wireless and passive thermometric monitoring method Download PDFInfo
- Publication number
- CN110220601A CN110220601A CN201910485189.0A CN201910485189A CN110220601A CN 110220601 A CN110220601 A CN 110220601A CN 201910485189 A CN201910485189 A CN 201910485189A CN 110220601 A CN110220601 A CN 110220601A
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- CN
- China
- Prior art keywords
- temperature
- module
- switch cabinet
- data
- transformer substation
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- 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.)
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/02—Means for indicating or recording specially adapted for thermometers
- G01K1/024—Means for indicating or recording specially adapted for thermometers for remote indication
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/02—Means for indicating or recording specially adapted for thermometers
- G01K1/026—Means for indicating or recording specially adapted for thermometers arrangements for monitoring a plurality of temperatures, e.g. by multiplexing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
Abstract
The invention discloses a kind of high-voltage switch cabinet of transformer substation wireless and passive thermometric monitoring methods, the method comprising the steps of: (1) UHF electronic tag being integrated on temperature transducer, it is mounted in high-tension switch cabinet by table pouched case, the temperature measurement data collector communicated with UHF electronic tag is mounted in high-tension switch cabinet；(2) data that each temperature transducer measures are acquired by temperature measurement data collector, is uploaded to station end pipe reason display screen and is shown；(3) end pipe of standing reason display screen upload the data to long-range on-line monitoring terminal again, passes through the temperature conditions of each high-voltage switch cabinet of transformer substation in monitoring region needed for long-range on-line monitoring terminal Centralizing inspection.Invention avoids the maintenance cost of battery and sensor later period, energy conservation and environmental protection fully phases out the cable of current supply line and data transmission, the non-maintaining thermometric of high-tension switch gear may be implemented, the generation of power grid accident is reduced, power grid trip-out rate is reduced, greatly improves the reliability service of power grid.
Description
Technical field
The invention belongs to substation's wireless and passive thermometry fields, and in particular to a kind of high-voltage switch cabinet of transformer substation is wireless
Passive thermometric monitoring method.
Background technique
The high-tension switch cabinet of substation in During Process of Long-term Operation, the positions such as the contact of switch is connected with bus because of aging or
Contact resistance is excessive and generates heat.Mainly based on being bolted, bolt is generally made of steel the connection type of electric terminal,
The bulking effect of different metal is different.The expansion of metal coefficient of Steel Bolt is than copper, aluminum bus is much smaller, especially spiral shell
Bolt type device junction, in operation as the expansion of the variation of load current and temperature, aluminium or copper and iron and shrinkage degree will
It is variant and generate creep, that is, metal is slowly plastically deformed under the action of stress, the process of creep also with joint
Temperature have very big relationship.Often there is the case where temperaturing lifting abnormality in the place of being bolted, and the circulation of each temperature change is increased
Contact resistance, it will make the heat recycled next time increase, increased temperature become the working condition of connector further
It is bad, thus vicious circle is formed, ultimately cause accident.And the battery power supply mode periodic maintenance of existing temperature transducer is not existing
Real, power supply hinders one of the bottleneck of application by becoming.There is inconvenience, somewhat expensive or danger when replacing or overhauling battery
When.
Summary of the invention
Technical problem solved by the present invention is a kind of high-voltage switch cabinet of transformer substation wireless and passive thermometric monitoring method is provided,
To solve above-mentioned problems of the prior art.
The technical scheme adopted by the invention is as follows: a kind of high-voltage switch cabinet of transformer substation wireless and passive thermometric monitoring method, the party
Method the following steps are included:
(1) UHF electronic tag is integrated on temperature transducer, it is mounted in high-tension switch cabinet by table pouched case
Busbar is bolted place, and the temperature measurement data collector communicated with UHF electronic tag is mounted in high-tension switch cabinet；
(2) data that each temperature transducer in the same high-tension switch cabinet measures are acquired by temperature measurement data collector, it will
It uploads to station end pipe reason display screen and shows that end pipe of standing reason display screen is provided with more upper limit alarm functional module and upper limit report
Alert module, is built-in with temperature monitoring module, warning function module, malfunction coefficient module, database, electronic map and temperature value
Real-time curve and history curve display module, temperature monitoring module show the temperature value of tested each point, and warning function module is used for
Actual measurement to parameter value be more than alarming value when carry out sound-light alarm, malfunction coefficient module is used for the position of equipment under test temperature spot
Failure is shown when setting non-normal working, electronic map is used for the distribution and reality of each acquisition station of terminal system, collection point geographical location
When monitoring data, the display module of terminal display screen is used to show the primary connection figure and each thermometric of entire temperature detection monitoring system
The thermometric state of point；
(3) end pipe of standing reason display screen again by data by RS485, Ethernet or CAN bus communication modes upload to it is long-range
Line monitors terminal, passes through each high-voltage switch cabinet of transformer substation in monitoring region needed for long-range on-line monitoring terminal Centralizing inspection
Temperature conditions.
Preferably, said one temperature measurement data acquisition device connects no more than No. four antennas, at most receives 24 temperature transducers
The temperature data of device passback.
Preferably, temperature data is sent to antenna by 920MHz wireless signal and passes back to thermometric by above-mentioned temperature transducer
Data acquisition device.
Preferably, the digital circuit of above-mentioned UHF electronic tag includes decoder, control logic circuit and memory, wherein
Decoder includes reset signal decoder, clock and data calibration signal decoder and data-signal decoder；Control logic electricity
Road includes state of a control machine module, memory reading control module and demodulates control module, is reduced using the method for power management
Numerical portion power consumption, digital module is refined, and is made in entire data communication process, and the module of correlation overturning is as few as possible, is used
Gradual approaching A/D converter, the differential nonlinearity and integral non-linear error of gradual approaching A/D converter are to reach drop
The purpose of low-power consumption.Power management module is according to the variation of state machine, and section cuts off incoherent decoding respectively in different times
Device circuit signal and clock.
Beneficial effects of the present invention: compared with prior art, effect of the invention is as follows:
(1) by being integrated with the temperature transducer of UHF electronic tag in the installation of the busbar place of being bolted, it can be realized wireless charging
The passive and wireless temperature measurement on-line sensor real-time monitoring tie point temperature rise of formula guarantees equipment operational safety, for preventing switchgear
Accident plays a significant role, and using the temperature transducer for being integrated with UHF electronic tag, eliminates battery and sensor later period
Maintenance cost, energy conservation and environmental protection, fully phase out current supply line and data transmission cable, simplify in high-tension electricity apparatus field
Installation and maintenance work, the non-maintaining thermometric of high-tension switch gear may be implemented, reduce the generation of power grid accident, reduce power grid
Trip-out rate greatly improves the reliability service of power grid；
(2) turn to realize by the way of device device using low-power consumption Approach by inchmeal modulus, as far as possible reduction temperature measurement error, by the function of AD conversion
It consumes near minimum.Thermometric bias target is controlled at ± 1 DEG C (when within the scope of -10~120 DEG C).
Detailed description of the invention
Fig. 1 is station terminal display screen display module schematic diagram；
Fig. 2 is principle schematic diagram of the invention.
Specific embodiment
With reference to the accompanying drawing and the present invention is described further in specific embodiment.
Embodiment 1: as Figure 1-Figure 2, a kind of high-voltage switch cabinet of transformer substation wireless and passive thermometric monitoring method, this method
The following steps are included:
(1) UHF electronic tag is integrated on temperature transducer, it is mounted in high-tension switch cabinet by table pouched case
Busbar is bolted place, and the temperature measurement data collector communicated with UHF electronic tag is mounted in high-tension switch cabinet；
(2) data that each temperature transducer in the same high-tension switch cabinet measures are acquired by temperature measurement data collector, it will
It uploads to station end pipe reason display screen and shows that end pipe of standing reason display screen is provided with more upper limit alarm functional module and upper limit report
Alert module, is built-in with temperature monitoring module, warning function module, malfunction coefficient module, database, electronic map and temperature value
Real-time curve and history curve display module, temperature monitoring module show the temperature value of tested each point, and warning function module is used for
Actual measurement to parameter value be more than alarming value when carry out sound-light alarm, malfunction coefficient module is used for the position of equipment under test temperature spot
Failure is shown when setting non-normal working, electronic map is used for the distribution and reality of each acquisition station of terminal system, collection point geographical location
When monitoring data, the display module of terminal display screen is used to show the primary connection figure and each thermometric of entire temperature detection monitoring system
The thermometric state of point；
More upper limit alarm: the temperature alarming value more than setting issues overtemperature warning signal, and thermometric shows that host continues to run；
Upper upper limit alarm: starting alarm contact output when being more than upper limit alarm value in predetermined temperature；
End pipe of standing manages display screen band RS485 communication port, can upload temperature data by this communication port and backstage dataphone.Visitor
High alarm setting and upper ceiling temperature can be voluntarily arranged in family according to field condition；
(3) end pipe of standing reason display screen again by data by RS485, Ethernet or CAN bus communication modes upload to it is long-range
Line monitors terminal, passes through each high-voltage switch cabinet of transformer substation in monitoring region needed for long-range on-line monitoring terminal Centralizing inspection
Temperature conditions.
Preferably, said one temperature measurement data acquisition device connects no more than No. four antennas, at most receives 24 temperature transducers
The temperature data of device passback.
Preferably, temperature data is sent to antenna by 920MHz wireless signal and passes back to thermometric by above-mentioned temperature transducer
Data acquisition device.
Preferably, the digital circuit of above-mentioned UHF electronic tag includes decoder, control logic circuit and memory, wherein
Decoder includes reset signal decoder, clock and data calibration signal decoder and data-signal decoder；Control logic electricity
Road includes state of a control machine module, memory reading control module and demodulates control module, is reduced using the method for power management
Numerical portion power consumption, digital module is refined, and is made in entire data communication process, and the module of correlation overturning is as few as possible, is used
Gradual approaching A/D converter, the differential nonlinearity and integral non-linear error of gradual approaching A/D converter are to reach drop
The purpose of low-power consumption.Power management module is according to the variation of state machine, and section cuts off incoherent decoding respectively in different times
Device circuit signal and clock.
Embodiment 2: as Figure 1-Figure 2, a kind of high-voltage switch cabinet of transformer substation wireless and passive thermometric monitoring system is included in
Line monitoring terminal, end pipe of standing reason display screen, temperature measurement data collector and temperature transducer, temperature transducer are integrated with UHF electronics
Label, the antenna that UHF electronic tag is connect with temperature measurement data collector are communicated, and temperature measurement data collector connects end pipe of arriving at a station
Display screen is managed, end pipe of standing manages display screen and is connected to on-line monitoring terminal by interchanger.
End pipe of standing manages display device and manages display device BSCW using the station end pipe of Zhuhai black stone electric automatization Co., Ltd
10P, it is the display and operation control terminal equipment for industry monitoring and control system that end pipe of standing, which manages display device BSCW 10P,.Product
Using the liquid crystal display of technical grade, harsh running environment can apply to, and possess high brightness backlights and extremely long operation longevity
Life.Operating system stability and high efficiency, easily updated and maintenance, can be according to project and customer requirement Custom Interface and function.
Preferably, above-mentioned temperature transducer uses watchband type structure.The application target position high-voltage switch gear of this temperature transducer
Busbar inside cabinet is bolted position, and the layout of the mounting structure and antenna to sensor has special requirement.Busbar in cabinet
There is a problem of high voltage, high current, overheat, strong electromagnetic, the shielding of the source RF, the best assembly direction of antenna, long-term non-maintaining
With require, so to accomplish small size as far as possible, maximized aerial signal energy acceptance in the result of integral sensors
Rate and superpower data signal transmission rate etc..Cause is used for high voltage installation, and ferrimagnet cannot be used in sensor, and
Light current circuit needs high pressure electrical grounding.
UHF electronic tag receives the energy of reader transmitting by antenna, when label is in the electromagnetic field range of reader
When interior, by electromagnetic field Space Coupling, label obtains energy from electromagnetic field, then is changed into RF energy with the method for rectification
DC power supply carries out energy storage to DC power supply by bulky capacitor, when voltage has reached starting voltage, activation temp measuring system electricity
Road emits temperature measurement data.Temperature sensor and analog-digital converter complete the sensing and quantization of temperature, the mode of UHF returned data
It is the impedance by controlling antennal interface, changes the reflection coefficient of antenna by impedance variations, to completes to modulate to carrier signal.
The UHF electronic tag of integrated temperature sensor.Circuit, Digital Logic control section, temperature sensing are mainly received by radio-frequency front-end
And quantization, four part of memory composition.
Radio-frequency front-end receives circuit: rf analog front-end module realizes that signal energy is converted, modulation /demodulation, clock generation,
The functions such as shaping.Wherein rectifier completes the conversion of AC-to DC, and the energy received due to label is with label antenna and RF
The distance between transmitter and change, rectifier output DC voltage vary widely range.Voltage regulator circuit is by rectifier
Operating voltage of the output voltage stabilization in label.The clock that clock circuit generates by clock counter real-time counting, using by
The secondary method control oscillator operation electric current approached realizes clock alignment.
It includes: rectifier, voltage regulator circuit, demodulation counter modulation circuit, clock generation and current source that radio-frequency front-end, which receives circuit,
Circuit.Rf analog front-end module realizes signal energy conversion, modulation /demodulation, the functions such as clock generation, shaping.Wherein rectifier
The conversion for completing AC-to DC, since the energy that label receives becomes with the distance between label antenna and RF transmitter
Change, the DC voltage of rectifier output varies widely range.Voltage regulator circuit stablizes rectifier output voltage in label
Operating voltage.The clock that clock circuit generates controls oscillation by clock counter real-time counting, using the method for Approach by inchmeal
Device operating current realizes clock alignment.
Temperature sensor circuit: temperature sensor generates voltage Vp, Vref of two different temperatures characteristics respectively, wherein Vp
Change with temperature linearity, Vref is not varied with temperature.Working principle is as follows: circuit Differential Input, Single-end output operational amplifier
The first pole, amplifier input terminal will generate fixed imbalance.Operational amplifier operating current and input voltage will be one
Exponential relationship.And this offset voltage fixed is positive temperature coefficient.By the voltage of this positive temperature coefficient and diode PN junction
The voltage of negative temperature coefficient exports the voltage of zero-temperature coefficient according to certain weighted superposition.
Digital logic portion: label digital circuit is by decoder, control logic circuit, three basic portion groupings of memory
At, wherein decoder section includes reset signal decoder, clock and data calibration signal decoder and data-signal decoder
Three parts；Control logic circuit includes state of a control machine module, memory reading control module and demodulates control module three parts.
Numerical portion power consumption is reduced using the method for power management.Digital module is refined, is made in entire data communication process, correlation is turned over
The module turned is as few as possible, and the differential nonlinearity and integral non-linear error of gradual approaching A/D converter are reduced with reaching
The purpose of power consumption.Power management module is according to the variation of state machine, and section cuts off incoherent decoder respectively in different times
Equal circuit signals and clock.Label chip working frequency is relatively low, and power management is feasible.
Example that the above description is merely a specific embodiment, scope of protection of the present invention is not limited thereto.It is ripe
It knows the those skilled in the art in the technical scope disclosed by the present invention, change or replacement mode can be easily found, these
It should be covered by the protection scope of the present invention.For this purpose, protection scope of the present invention should be with the protection model of the claim
Subject to enclosing.
Claims (4)
1. a kind of high-voltage switch cabinet of transformer substation wireless and passive thermometric monitoring method, it is characterised in that: method includes the following steps:
(1) UHF electronic tag is integrated on temperature transducer, it is mounted in high-tension switch cabinet by table pouched case
Busbar is bolted place, and the temperature measurement data collector communicated with UHF electronic tag is mounted in high-tension switch cabinet；
(2) data that each temperature transducer in the same high-tension switch cabinet measures are acquired by temperature measurement data collector, it will
It uploads to station end pipe reason display screen and shows that end pipe of standing reason display screen is provided with more upper limit alarm functional module and upper limit report
Alert module, is built-in with temperature monitoring module, warning function module, malfunction coefficient module, database, electronic map and temperature value
Real-time curve and history curve display module, temperature monitoring module show the temperature value of tested each point, and warning function module is used for
Actual measurement to parameter value be more than alarming value when carry out sound-light alarm, malfunction coefficient module is used for the position of equipment under test temperature spot
Failure is shown when setting non-normal working, electronic map is used for the distribution and reality of each acquisition station of terminal system, collection point geographical location
When monitoring data, the display module of terminal display screen is used to show the primary connection figure and each thermometric of entire temperature detection monitoring system
The thermometric state of point；
(3) end pipe of standing reason display screen again by data by RS485, Ethernet or CAN bus communication modes upload to it is long-range
Line monitors terminal, passes through each high-voltage switch cabinet of transformer substation in monitoring region needed for long-range on-line monitoring terminal Centralizing inspection
Temperature conditions.
2. a kind of high-voltage switch cabinet of transformer substation wireless and passive thermometric monitoring method according to claim 1, it is characterised in that:
One temperature measurement data acquisition device connects no more than No. four antennas, at most receives the temperature data of 24 temperature transducers passback.
3. a kind of high-voltage switch cabinet of transformer substation wireless and passive thermometric monitoring method according to claim 1, it is characterised in that:
Temperature data is sent to antenna by 920MHz wireless signal and passes back to temperature measurement data acquisition device by temperature transducer.
4. a kind of high-voltage switch cabinet of transformer substation wireless and passive thermometric monitoring method according to claim 1, it is characterised in that:
The digital circuit of UHF electronic tag includes decoder, control logic circuit and memory, wherein decoder includes reset signal
Decoder, clock and data calibration signal decoder and data-signal decoder；Control logic circuit includes state of a control machine mould
Block, memory read control module and demodulate control module, reduce numerical portion power consumption using the method for power management, will be digital
Module refinement, makes in entire data communication process, using gradual approaching A/D converter, power management module is according to state machine
Variation, section cuts off incoherent decoder circuit signal and clock respectively in different times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910485189.0A CN110220601A (en) | 2019-06-05 | 2019-06-05 | A kind of high-voltage switch cabinet of transformer substation wireless and passive thermometric monitoring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910485189.0A CN110220601A (en) | 2019-06-05 | 2019-06-05 | A kind of high-voltage switch cabinet of transformer substation wireless and passive thermometric monitoring method |
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| CN110220601A true CN110220601A (en) | 2019-09-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910485189.0A Pending CN110220601A (en) | 2019-06-05 | 2019-06-05 | A kind of high-voltage switch cabinet of transformer substation wireless and passive thermometric monitoring method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111486991A (en) * | 2020-05-09 | 2020-08-04 | 国家电网有限公司 | Overheating risk early warning device and early warning method for 10kV high-voltage switch cabinet |
| CN112113675A (en) * | 2020-09-15 | 2020-12-22 | 国网山东省电力公司济南市历城区供电公司 | Contact temperature monitor in high tension switchgear |
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| CN102339526A (en) * | 2010-07-24 | 2012-02-01 | 郑龙杰 | High voltage node wireless temperature measurement alarm system |
| CN104198081A (en) * | 2014-09-19 | 2014-12-10 | 河南森源电气股份有限公司 | Internal contact temperature real-time online monitoring system of switch cabinet |
| CN207335884U (en) * | 2017-11-03 | 2018-05-08 | 武汉泽塔电气科技有限公司 | GIS switch cabinet temperature on-line monitoring systems |
| CN208887796U (en) * | 2018-11-15 | 2019-05-21 | 贵州电网有限责任公司 | A kind of high-voltage switch cabinet of transformer substation wireless and passive temp measuring system based on UHF technology |
-
2019
- 2019-06-05 CN CN201910485189.0A patent/CN110220601A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101055209A (en) * | 2007-05-31 | 2007-10-17 | 淄博惠工仪器有限公司 | Switch cabinet contact temperature monitoring and alarming system |
| CN102339526A (en) * | 2010-07-24 | 2012-02-01 | 郑龙杰 | High voltage node wireless temperature measurement alarm system |
| CN104198081A (en) * | 2014-09-19 | 2014-12-10 | 河南森源电气股份有限公司 | Internal contact temperature real-time online monitoring system of switch cabinet |
| CN207335884U (en) * | 2017-11-03 | 2018-05-08 | 武汉泽塔电气科技有限公司 | GIS switch cabinet temperature on-line monitoring systems |
| CN208887796U (en) * | 2018-11-15 | 2019-05-21 | 贵州电网有限责任公司 | A kind of high-voltage switch cabinet of transformer substation wireless and passive temp measuring system based on UHF technology |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111486991A (en) * | 2020-05-09 | 2020-08-04 | 国家电网有限公司 | Overheating risk early warning device and early warning method for 10kV high-voltage switch cabinet |
| CN112113675A (en) * | 2020-09-15 | 2020-12-22 | 国网山东省电力公司济南市历城区供电公司 | Contact temperature monitor in high tension switchgear |
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Application publication date: 20190910 |
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