CN106771842A - A kind of fuse on-line monitoring system - Google Patents
A kind of fuse on-line monitoring system Download PDFInfo
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- CN106771842A CN106771842A CN201611078492.1A CN201611078492A CN106771842A CN 106771842 A CN106771842 A CN 106771842A CN 201611078492 A CN201611078492 A CN 201611078492A CN 106771842 A CN106771842 A CN 106771842A
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- G—PHYSICS
- G01—MEASURING; TESTING
- 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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/74—Testing of fuses
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- General Physics & Mathematics (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
- Locating Faults (AREA)
Abstract
The present invention discloses a kind of fuse on-line monitoring system, including detection terminal, communication terminal and system main website, the detection terminal includes the first Main Processor Unit, electromagnetic field inducing unit, and Current Voltage detection unit, positional information collecting unit, the first area communication units and the first display unit being connected with the first Main Processor Unit, the electromagnetic field inducing unit is connected with Current Voltage detection unit；The communication terminal includes the second Main Processor Unit, and the second area communication units, telecommunication unit, the second display unit being connected with the second Main Processor Unit；The detection terminal is fixedly mounted on each fusion tube of fuse；The fuse parameters that the detection terminal will be detected are sent to the Main Processor Unit of communication terminal second by the first area communication units, the second area communication units, and second Main Processor Unit is sent to system main website by telecommunication unit again.
Description
Technical field
The present invention relates to a kind of fuse on-line monitoring system, belong to power network monitoring field.
Background technology
At present in medium-voltage distribution circuit, fuse has been obtained for widely using, and its principle relies primarily on selected
The fuse of different rated current limits line current, and when there is high current failure, electric current exceedes fuse rated current, fuse
Fusing disengagement failure, realizes the protection of distribution line.These fuses are mainly used in the high current error protection of distribution network, no
Possess intelligent functions.These fuses are during work, it is impossible to the running state data of Real-time Collection fuse, therefore
It is difficult to judge fuse performance and quality in itself, the division state and institute's on-load that also cannot in time grasp fuse stop band
Electricity condition, while also repair based on condition of component cannot be realized according to circuit where fuse and the operational factor of institute's on-load.
In view of this, the present inventor is studied this, specially develops a kind of fuse on-line monitoring system, this case by
This is produced.
The content of the invention
It is an object of the invention to provide a kind of fuse on-line monitoring system, achievable fuse in itself, place circuit and
The real-time online detection of the running status and parameter of load is flexible with simple structure, low cost, easy for installation, constructing communication network
The features such as, the repair based on condition of component level of equipment is favorably improved, can also can effectively shorten event by obtaining fault outage position in time
The barrier lookup time, improve power supply reliability.
To achieve these goals, solution of the invention is：
A kind of fuse on-line monitoring system, including detection terminal, communication terminal and system main website, the detection terminal include the
One Main Processor Unit, electromagnetic field inducing unit, and Current Voltage detection unit, the position letter being connected with the first Main Processor Unit
Breath collecting unit, the first area communication units and the first display unit, the electromagnetic field inducing unit detect single with Current Voltage
Unit is connected；The communication terminal includes the second Main Processor Unit, and the second local communication being connected with the second Main Processor Unit
Unit, telecommunication unit, the second display unit；The detection terminal is fixedly mounted on each fusion tube of fuse；It is described
The fuse parameters that detection terminal will be detected are sent to logical by the first area communication units, the second area communication units
The letter Main Processor Unit of terminal second, second Main Processor Unit is sent to system main website by telecommunication unit again.
Preferably, first Main Processor Unit, the second Main Processor Unit are using microprocessor control.
Preferably, the electromagnetic field inducing unit uses magnetic sensors, the positional information collecting unit to use magnetic
Resistance sensor.
Preferably, the Current Voltage detection unit includes fault current judging module and voltage-to-ground measure of the change mould
Block.Current Voltage detection unit is based on induced-current, and calculating flows through the AC compounent of fuse and the size of DC component；Pass through
Whether fault current judging module, the curent change that automatic detection flows through when the short circuit of fuse, thunder and lightning dodge exceedes failure door
Limit value, and automatic detection be grounded when transient state capacitance current whether exceed fault threshold；By voltage-to-ground measure of the change
The measurement of module measure traverse line and fuse discharge current over the ground, calculates line-to-earth voltage variable quantity.
Preferably, the fault current judging module includes the signal amplification circuit being connected with induced-current, the letter
The output end of number amplifying circuit connects direct current detecting circuit and exchanges detecting circuit, the output end of the direct current detecting circuit respectively
Connection DC component decision circuit, realizes that transient state capacitance current thresholding is sentenced by direct current detecting circuit and DC component decision circuit
Disconnected output；The output end of the exchange detecting circuit connects power frequency component high current amplitude decision circuit respectively and high-frequency signal is big
Current amplitude decision circuit, wherein, exchange detecting circuit and power frequency component high current amplitude decision circuit realize power frequency heavy-current
Mutation threshold judgement output, exchange detecting circuit and high-frequency signal high current amplitude decision circuit realize that high frequency high current is mutated door
Limit judgement output.
Preferably, the voltage-to-ground measure of the change module includes the condenser network being connected with high-voltage conducting wires, for surveying
The discharge current measuring circuit of condenser network capacitance current size is measured, and the average sampling being connected with discharge current measuring circuit
Circuit, high-voltage conducting wires voltage-to-ground changing value is obtained by voltage-to-ground measure of the change module.
Preferably, first area communication units and the second area communication units are logical using radio communication or optical fiber
Letter, the data communication channel set up between communication terminal and detection terminal.
Preferably, the telecommunication unit is using short message, GPRS, 3G or fiber optic communication, realize communication terminal with
Two-way communication between system main website.
Preferably, the communication terminal also include data interface unit, the data interface unit using Ethernet,
One or more in RS232, RS485, data interface unit be used for the local maintenance of holding equipment, external device data access and
Local data output etc..
Fuse on-line monitoring system of the present invention can realize fuse in itself, the operation shape of place circuit and load
The real-time online detection of state and parameter, has the following advantages that：
1) terminal installation detects power circuit electric current and voltage change, and automatic identification fault current and phase using analog circuit
The voltage change answered, so that triggering the first primary processor carries out accident analysis and judgement；
2) terminal installation detects the location status change of terminal installation, so that in time using miniaturization positional information collecting unit
The change in location of fuse fusion tube is obtained, the division state of fuse is judged, obtain circuit stops electriferous state；
3）Using wirelessly or non-wirelessly communication mode, fuse on-line monitoring system is set up, realize fuse failure information, operation number
According to the Real-time Collection of, status data, the intellectuality of fuse is realized；
4) detection terminal is installed on fuse, and without external power supply or other equipment, and simple structure, overall power are low, can
Realize terminal installation miniaturization, simple and convenient etc. requirement is installed；Short-distance wireless can be used between detection terminal and communication terminal
Communication, meets the insulating requirements of circuit and equipment.
The present invention is described in further detail below in conjunction with drawings and the specific embodiments.
Brief description of the drawings
Fig. 1 is the fuse on-line monitoring system block diagram of the present embodiment；
Fig. 2 is the detection terminal block diagram of the present embodiment；
Fig. 3 is the fault current judging module block diagram of the present embodiment；
Fig. 4 is the voltage-to-ground measure of the change module frame chart of the present embodiment；
Fig. 5 is the communication terminal block diagram of the present embodiment.
Specific embodiment
As shown in figure 1, a kind of fuse on-line monitoring system, including detection terminal 1, and by communication terminal 2 and inspection
Survey the connected system main website 3 of terminal 1.3 detection terminals 1 constitute one group, and fuse is fixedly mounted on using stage clip or band
Fusion tube on, the same group of change of the electric current and voltage signal of fuse A phases, B phases and C phases is measured respectively, so that measurement circuitry
Load current, fault current, detect line fault, detect the fusion tube position of fuse so as to judge fuse division state；Will
The data such as current data, fault type, fuse division state send this to by short-distance wireless communication or fiber optic communication
The communication terminal 2 on ground.Communication terminal 2 is used to receive current data, fault message, the fuse division of local detection terminal 1
The data such as state, by the telecommunication mode teletransmission such as GPRS/3G radio communications, fiber optic communication to system main website 3.System master
3 are stood for receiving and processing the various data that communication terminal is uploaded, the real-time online of the running status of circuit and fuse is realized
The functions such as monitoring, historical data statistical query and equipment state overhauling.Detection terminal 1 is installed on fuse, without external electricity
Source or other equipment, and simple structure, overall power are low, are capable of achieving terminal installation miniaturization, install simple and convenient etc. requirement；Inspection
Surveying can use short-distance wireless communication between terminal 1 and communication terminal 2, meet the insulating requirements of circuit and equipment.
As shown in Fig. 2 in the present embodiment, the detection terminal 1 includes the first Main Processor Unit 11, electromagnetic field inducing list
Unit 12, and Current Voltage detection unit 13, the positional information collecting unit 14, first being connected with the first Main Processor Unit 11
Ground communication unit 15, the first display unit 16, the first power supply unit 17, the first data storage cell 18 and clock unit 19, its
In, the electromagnetic field inducing unit 12 is connected with Current Voltage detection unit 13, and unit function is as follows：
1）First Main Processor Unit 11：Based on the change of fuse voltage-to-ground, failure that Current Voltage detection unit 13 is detected
The parameters such as electric current, ground connection, short circuit or the lightning fault for entering row line judges；Event and data time are entered based on clock unit 19
Line flag；By the first area communication units 15, with wireless or optical fiber solutions by fault type, measurement data, fuse position
Put with the information transmission such as division state to communication terminal 2；First display unit 16 is carried out just using LED or color display window
The indicating fault on ground；
2）Electromagnetic field inducing unit 12：Using the high-voltage electromagnetic field around fuse, induced-current is obtained；Using fuse over the ground
The electrical potential difference of voltage and air dielectric, obtains wire atmospherical discharges electric current；
3）Current Voltage detection unit 13：Based on induced-current, calculating flow through fuse AC compounent and DC component it is big
It is small；Decision circuit is mutated by high current, whether the curent change that automatic detection flows through when the short circuit of fuse, thunder and lightning dodge surpasses
Cross fault threshold；By low current DC component decision circuit, whether transient state capacitance current when automatic detection is grounded exceedes
Fault threshold；By the measurement of measure traverse line and fuse discharge current over the ground, line-to-earth voltage variable quantity is calculated；
4）Positional information collecting unit 14：Change in location and the position of the detection terminal 1 being fixed on fuse fusion tube can be obtained
Information.At present, existing many type sensors have put it into commercial operation, such as magnetoresistive transducer, it is adaptable to small size, low-power consumption requirement
Equipment high is used.Terminal installation detects the location status change of terminal installation using miniaturization positional information collecting unit, from
And the change in location of fuse fusion tube is obtained in time, and judge the division state of fuse, obtain circuit stops electriferous state；
5）First area communication units 15：The modes such as short-distance wireless communication, fiber optic communication can be supported, is that fault detection terminal is carried
For data communication channel.Using wirelessly or non-wirelessly communication mode, fuse on-line monitoring system is set up, realize that fuse failure is believed
Breath, service data, the Real-time Collection of status data, realize the intellectuality of fuse；
6）First display unit 16：With LED or color display window, can acceptor's chip controls show corresponding failure shape
State；
7）First power supply unit 17：Electric energy is obtained using modes such as sensing power taking, solar energy power taking, backup batteries, and is each
Functional unit provides power supply；
8) the first data storage cell 18：The detected related data of storage, when such as local communication is interrupted, can support breakpoint
Resume or retransmit；
9）Clock unit 19：Can obtain communication terminal 2 pair when instruct, for the master chip of the first Main Processor Unit 11 is provided accurately
Pair when, it is ensured that detection data and system synchronization that terminal 1 gathered and uploaded.
In the present embodiment, the Current Voltage detection unit 13 includes that fault current judging module and voltage-to-ground change
Measurement module.Current Voltage detection unit 13 is based on induced-current, and calculating flows through the AC compounent and DC component of fuse
Size；By fault current judging module, whether the curent change that automatic detection flows through when the short circuit of fuse, thunder and lightning dodge surpasses
Cross fault threshold, and whether transient state capacitance current of automatic detection when being grounded exceedes fault threshold；By voltage-to-ground
The measurement of measure of the change module measure traverse line and fuse discharge current over the ground, calculates line-to-earth voltage variable quantity.
As shown in figure 3, the fault current judging module includes and faradic signal amplification circuit 131, the letter
The output end of number amplifying circuit 131 is connected to direct current detecting circuit 132 and exchanges detecting circuit 133, the direct current detection
The output end connection DC component decision circuit 134 of circuit 132, it is real by detecting circuit 132 and DC component decision circuit 134
Existing transient state capacitance current thresholding judges output；The output end of the exchange detecting circuit 133 connects power frequency component high current respectively
Amplitude decision circuit 135 and high-frequency signal high current amplitude decision circuit 136, wherein, exchange detecting circuit 133 and power frequency component
High current amplitude decision circuit 135, realizes power frequency heavy-current mutation threshold judgement output, exchange detecting circuit 133 and high frequency letter
Number high current amplitude decision circuit 136, realizes the mutation threshold judgement output of high frequency high current.Each circuit concrete function is as follows：
1）Signal amplifies electric current 131：The induced-current for obtaining will be changed by the electromagnetic field around wire and pass through linear amplifier
It is amplified, and separates two-way and is made decisions using distinct methods；
2）Direct current detecting circuit 132：By Waveform Matching circuit, the transient state capacitance current component of signal in branch 1 is obtained, filtered
Power frequency, high frequency and other component of signals；
3）DC component decision circuit 134：Transient current current signal component to obtaining carries out amplitude com parison, adjudicates the signal
Whether it is fault-current signal；
4）Exchange detecting circuit 133：By Waveform Matching circuit, the power frequency component component and high-frequency signal point in branch 2 are obtained
Amount；
5）Power frequency component decision circuit 135：Power frequency component component to obtaining carries out the amplitude rate of exchange, adjudicates whether the signal is event
Barrier current signal；
6）High-frequency signal decision circuit 136：High frequency component signal to obtaining carries out the amplitude rate of exchange, adjudicates whether the signal is event
Barrier current signal.
As shown in figure 4, the voltage-to-ground measure of the change module includes the condenser network 137 being connected with high-voltage conducting wires, use
In the discharge current measuring circuit 138 of measurement condenser network capacitance current size, and it is connected with discharge current measuring circuit 138
Average sample circuit 139, high-voltage conducting wires voltage-to-ground changing value is obtained by voltage-to-ground measure of the change module.Each circuit tool
Body function is as follows：
1）Condenser network 137：High-voltage conducting wires over the ground between air dielectric high-voltage conducting wires and the earth there is voltage in the case of,
There is faint discharge current, alternation weak current is switched into capacitance discharge current using condenser network, be easy to measurement；
2）Discharge current measuring circuit 138：Capacitance current size is measured by high precision electro flow measurement circuitry；
3）Average sample circuit 139：The capacitance current average amplitude in setting cycle is obtained, when average amplitude change exceedes setting
During thresholding, by the first Main Processor Unit by surveying capacitance current average amplitude variable quantity, wire voltage-to-ground variable quantity is calculated,
One of foundation adjudicated as failure.
Terminal installation described in the present embodiment detects power circuit electric current and voltage change using analog circuit, and knows automatically
Other fault current and corresponding voltage change, so that triggering the first primary processor 11 carries out accident analysis and judgement.
The communication terminal 2 includes the second Main Processor Unit 21, and second be connected with the second Main Processor Unit 21
Ground communication unit 22, telecommunication unit 23, the second display unit 24, the second data interface unit 25, the second power supply unit 26
With the second data storage cell 27.Each unit function is as follows：
1) the second Main Processor Unit 21：By the second area communication units 22, fault message, survey that detection terminal 1 is uploaded are received
Amount data, fuse action and division state etc.；By telecommunication unit 23, by data remote to system main website 3；Second shows
Show unit 24, show the working condition of communication terminal 2；
2) the second area communication units 22：The modes such as short-distance wireless communication, fiber optic communication can be supported, set up communication terminal 2 with
Data communication channel between detection terminal 1；
3) telecommunication unit 23：The modes such as short message, GPRS, 3G, fiber optic communication can be supported, is realized and system main website between
Two-way communication；
4）Second data interface unit 25：With the interfaces such as Ethernet, RS232/485, the local maintenance of holding equipment, outside
The function such as device data access and local data output；
5）Second power supply unit 26：Electric energy is obtained using modes such as solar energy power taking, battery or outside civil powers, and is each work(
Can unit offer power supply；
6) the second data storage cell 27：The various data received from detection terminal are stored, when such as telecommunication is interrupted, can
Support breakpoint transmission or repeating transmission.
Fuse on-line monitoring system described in the present embodiment, achievable fuse in itself, the fortune of place circuit and load
Row state and parameter real-time online detection, with simple structure, low cost, easy for installation, constructing communication network is flexible the features such as, have
Help the repair based on condition of component level of raising equipment, can also be by obtaining fault outage position in time, when effectively can shorten trouble shoot
Between, improve power supply reliability.
Above-described embodiment and schema and non-limiting product form of the invention and style, any art it is common
Appropriate change or modification that technical staff is done to it, all should be regarded as not departing from patent category of the invention.
Claims (9)
1. a kind of fuse on-line monitoring system, it is characterised in that：It is described including detection terminal, communication terminal and system main website
Detection terminal includes the first Main Processor Unit, electromagnetic field inducing unit, and the Current Voltage being connected with the first Main Processor Unit
Detection unit, positional information collecting unit, the first area communication units and the first display unit, the electromagnetic field inducing unit with
Current Voltage detection unit is connected；The communication terminal includes the second Main Processor Unit, and is connected with the second Main Processor Unit
The second area communication units, telecommunication unit, the second display unit；The detection terminal is fixedly mounted on each of fuse
On individual fusion tube；The fuse parameters that the detection terminal will be detected locally are led to by the first area communication units, second
Letter unit is sent to the Main Processor Unit of communication terminal second, and second Main Processor Unit is sent to by telecommunication unit again
System main website.
2. a kind of fuse on-line monitoring system as claimed in claim 1, it is characterised in that：First Main Processor Unit,
Second Main Processor Unit is using microprocessor control.
3. a kind of fuse on-line monitoring system as claimed in claim 1, it is characterised in that：The electromagnetic field inducing unit is adopted
With magnetic sensors, the positional information collecting unit uses magnetoresistive transducer.
4. a kind of fuse on-line monitoring system as claimed in claim 1, it is characterised in that：The Current Voltage detection unit
Including fault current judging module and voltage-to-ground measure of the change module.
5. a kind of fuse on-line monitoring system as claimed in claim 4, it is characterised in that：The fault current judging module
Including the signal amplification circuit being connected with induced-current, the output end of the signal amplification circuit connects direct current detecting circuit respectively
With exchange detecting circuit, the output end connection DC component decision circuit of the direct current detecting circuit, by direct current detecting circuit
Realize that transient state capacitance current thresholding judges output with DC component decision circuit；The output end of the exchange detecting circuit connects respectively
Connect power frequency component high current amplitude decision circuit and high-frequency signal high current amplitude decision circuit, wherein, exchange detecting circuit and
Power frequency component high current amplitude decision circuit realizes power frequency heavy-current mutation threshold judgement output, exchange detecting circuit and high frequency letter
Number high current amplitude decision circuit realizes the mutation threshold judgement output of high frequency high current.
6. a kind of fuse on-line monitoring system as claimed in claim 4, it is characterised in that：The voltage-to-ground measure of the change
Module includes the condenser network being connected with high-voltage conducting wires, and the discharge current for measuring condenser network capacitance current size measures electricity
Road, and the average sample circuit being connected with discharge current measuring circuit, high pressure is obtained by voltage-to-ground measure of the change module
Wire voltage-to-ground changing value.
7. a kind of fuse on-line monitoring system as claimed in claim 1, it is characterised in that：First area communication units
Radio communication or fiber optic communication are used with the second area communication units.
8. a kind of fuse on-line monitoring system as claimed in claim 1, it is characterised in that：The telecommunication unit is used
Short message, GPRS, 3G or fiber optic communication.
9. a kind of fuse on-line monitoring system as claimed in claim 1, it is characterised in that：The communication terminal also includes number
According to interface unit, the data interface unit is using one or more in Ethernet, RS232, RS485.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611078492.1A CN106771842A (en) | 2016-11-30 | 2016-11-30 | A kind of fuse on-line monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611078492.1A CN106771842A (en) | 2016-11-30 | 2016-11-30 | A kind of fuse on-line monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106771842A true CN106771842A (en) | 2017-05-31 |
Family
ID=58898855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611078492.1A Pending CN106771842A (en) | 2016-11-30 | 2016-11-30 | A kind of fuse on-line monitoring system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110703161A (en) * | 2019-09-18 | 2020-01-17 | 国网江苏省电力有限公司淮安市洪泽区供电分公司 | Distribution lines fuse on-line monitoring system |
| CN110703162A (en) * | 2019-09-18 | 2020-01-17 | 国网江苏省电力有限公司淮安市洪泽区供电分公司 | Distribution lines fuse fault detection device |
| CN112345927A (en) * | 2020-08-20 | 2021-02-09 | 北京国电通网络技术有限公司 | Monitoring system and intelligent fuse of fuse |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103887888A (en) * | 2014-04-17 | 2014-06-25 | 胡波 | Fuse protector on-line monitoring system |
| CN206223901U (en) * | 2016-11-30 | 2017-06-06 | 国网浙江诸暨市供电公司 | A kind of fuse on-line monitoring system |
-
2016
- 2016-11-30 CN CN201611078492.1A patent/CN106771842A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103887888A (en) * | 2014-04-17 | 2014-06-25 | 胡波 | Fuse protector on-line monitoring system |
| CN206223901U (en) * | 2016-11-30 | 2017-06-06 | 国网浙江诸暨市供电公司 | A kind of fuse on-line monitoring system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110703161A (en) * | 2019-09-18 | 2020-01-17 | 国网江苏省电力有限公司淮安市洪泽区供电分公司 | Distribution lines fuse on-line monitoring system |
| CN110703162A (en) * | 2019-09-18 | 2020-01-17 | 国网江苏省电力有限公司淮安市洪泽区供电分公司 | Distribution lines fuse fault detection device |
| CN112345927A (en) * | 2020-08-20 | 2021-02-09 | 北京国电通网络技术有限公司 | Monitoring system and intelligent fuse of fuse |
| CN112345927B (en) * | 2020-08-20 | 2023-07-07 | 北京国电通网络技术有限公司 | Monitoring system of fuse and intelligent fuse |
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