CN106646122A - Line distribution monitoring system based on wireless transmission and synchronization sampling method - Google Patents
Line distribution monitoring system based on wireless transmission and synchronization sampling method Download PDFInfo
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- CN106646122A CN106646122A CN201611113447.5A CN201611113447A CN106646122A CN 106646122 A CN106646122 A CN 106646122A CN 201611113447 A CN201611113447 A CN 201611113447A CN 106646122 A CN106646122 A CN 106646122A
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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
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/085—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution lines, e.g. overhead
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The present invention discloses a line distribution monitoring system based on wireless transmission and a synchronization sampling method, belonging to the electric power technology field. The system comprises a plurality of distribution monitoring units, and each distribution monitoring unit comprises a data monitoring device (8) and a plurality of monitoring indication devices (9) communicated with the data monitoring device (8). The simultaneity problem that how to ensure the data collection is solved, the accuracy of determination of the distribution line faults through a transformer station is ensured, and a powerful technical support is provided for the reinforcement of the management of a power grid.
Description
Technical field
The invention belongs to technical field of electric power.
Background technology
In distribution line, circuit harvester and monitoring device collectively form distribution line on-Line Monitor Device, for right
The operating mode of overhead distribution is monitored.Wherein circuit harvester is stuck on high-tension distributing line, gathers the work of distribution line
Make state.Monitoring device is reported for monitoring the operating mode of distribution line, and the state of distribution line being carried out into process.
At present, select Feeder Terminal Unit (i.e. FTU) more pressure line monitoring device, possess remote control, remote signalling, fault detect work(
Can, and communicate with power distribution automation main station, there is provided distribution system ruuning situation and various parameters are Monitoring and Controlling information needed, and
The order that distribution main website is issued is performed, controller switching equipment is adjusted and is controlled, realize fault location, Fault Isolation and non-faulting
The functions such as region fast recovery of power supply, installing FTU needs to coordinate installation voltage current transformer, breaker etc., circuit installing
During power off time it is long, in addition FTU involves great expense, and current-voltage transformer is needed from special high-voltage mutual inductor, engineering
It is costly；In recent years also have the fault detector for possessing two distant functions uses report, from the point of view of actually used, two distant indicating fault
Device is likewise supplied with line current acquisition function, but due to independently installing, the synchronous sexual function of collection does not possess, while its work(
Short trouble detection can be laid particular emphasis on and reported, current acquisition precision is generally higher than 3%, and most Electricity Functionals of not asking for are only relied on
Itself carries disposable battery, and its working life is extensively queried with reliability, takes single-ended sense its voltage sample in addition more
Mode is answered, the value of electric field induction is less, and relevance is weaker between phase sequence, the possibility without reference, two distant fault detectors lead to
Chang Duli split-phases are independently installed, not physically connected between each phase, and the data of many phase acquisitions of multiple spot are relatively independent, data acquisition when
Between randomness it is big, this causes larger difficulty for background analysis line status.
For separate collecting unit, GPS, wireless public network GPRS synchronised clocks is taken to realize also appearing in the newspapers for synchronized sampling
Road, both are generally higher than 100mW at power consumption, it is difficult on distribution line weak power taking and it is battery powered in the case of use.
The content of the invention
It is an object of the invention to provide a kind of based on the circuit distribution monitoring system being wirelessly transferred and synchronous sampling method, solution
Determined sex chromosome mosaicism while how ensureing data acquisition, it is ensured that the accuracy that transformer station is judged distribution line failure, pair plus
The management of forceful electric power net provides strong technical support.
For achieving the above object, the present invention is employed the following technical solutions：
It is a kind of based on the circuit distribution monitoring system being wirelessly transferred, including several distribution monitoring units, each distribution prison
Surveying unit includes a data monitoring device and the several monitoring instruction devices communicated with the data monitoring device；
The monitoring instruction device includes that Current Voltage sensor, sampling module, power module, backup battery, control are single
Unit and wireless module；
Current Voltage sensor is provided with sampling coil and taking energy coil, and sampling coil connection sampling module, sampling module connects
Control unit is connect, control unit connection wireless module, taking energy coil connection voltage doubling rectifing circuit, taking energy coil is also connected with power supply mould
Block, backup battery connection power module, power module is powered for sampling module, control unit and wireless module, and power module is defeated
Go out positive supply；
Wireless module communicates with the data monitoring device；
Power module is provided with voltage doubling rectifing circuit, voltage doubling rectifing circuit include diode D1, diode D2, diode D3,
Diode D4, diode D5, diode D6, diode D7, diode D8, farad capacitor C1, farad capacitor C2 and electric capacity C3, take
One end of energy coil 112 connects the negative pole of diode D1, and the other end connects the positive pole of diode D5, the negative pole connection of diode D5
The positive pole of diode D3, the negative pole of diode D3 connects the positive pole of diode D1, and the negative pole of diode D1 is also connected with diode D6
Positive pole, the negative pole of diode D6 connects the positive pole of diode D4, and the negative pole of diode D4 connects the positive pole of diode D2, two poles
The negative pole of pipe D2 connects the positive pole of farad capacitor C2, the negative pole connection ground wire of farad capacitor C2, the positive pole connection two of diode D6
The positive pole of pole pipe D7, the negative pole of diode D7 connects the positive pole of farad capacitor C1, the negative pole connection diode D2 of farad capacitor C1
Negative pole, the positive pole of farad capacitor C2 is also connected with the positive pole of diode D8, and the negative pole of diode D8 connects the positive pole of diode D6,
The positive pole of farad capacitor C1 also connects ground wire by electric capacity C3；
Sampling module include electric capacity C4, electric capacity C5, electric capacity C6, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5,
Amplifier U1 and amplifier U2, one end of sampling coil connects 1 pin of resistance R2, and the other end connects 1 pin of resistance R3, resistance R2
1 pin also ground wire is connected by electric capacity C6,1 pin of resistance R3 also connects ground wire by electric capacity C4, and the 2 pin connection of resistance R2 is amplified
2 pin of device U1,2 pin of resistance R3 connect 3 pin of amplifier U1, and 2 pin of resistance R3 also connect ground wire, amplifier by resistance R4
The 8 pin connection positive supply of U1, the 4 pin connection ground wire of amplifier U1,1 pin of amplifier U1 connects amplifier U1's by resistance R1
2 pin, 1 pin of amplifier U1 connects ground wire by electric capacity C5, and 1 pin of amplifier U1 is also connected with 3 pin of amplifier U2, amplifier U2
2 pin connect amplifier U2 1 pin, amplifier U2 8 pin connection positive supply, amplifier U2 4 pin connection ground wire, amplifier U2
1 pin also by resistance R5 connect described control unit.
The Current Voltage sensor is Open Type Electric Current Mutual Inductor, and the Open Type Electric Current Mutual Inductor includes top with
Portion, the top includes two upper half circular arc portions that can be opened and dock, and upper half arc sections point include setting successively from outside to inside
Semiconductive ring in semiconductive ring, upper half magnetic core and top outside the top put, in semiconductive ring outside top, top semiconductive ring and on
Half magnetic core is semicircular arc；After two upper half circular arc portion docking, semiconductive ring is relative outside two tops constitutes whole annulus
Conducting ring outside the top of shape, semiconductive ring constitutes conducting ring in the top of whole annular, two upper half relatively in two tops
The relative upper magnetic core for constituting whole annular of magnetic core, the outer ring of upper magnetic core is wound with upper magnetic ring coil, upper magnetic core and thereon upper
Magnetic ring coil is folded in outside top in conducting ring and top between conducting ring；
The bottom includes two lower half circular arc portions that can be opened and dock, lower half arc sections point including from outside to inside according to
Semiconductive ring in semiconductive ring, lower half core assembly and bottom outside the bottom of secondary setting, lower half core assembly include between the upper and lower every
Arrange partly take can magnetic core and half sampling magnetic core, semiconductive ring bottom outside, partly take can magnetic core, half sample and partly lead in magnetic core and bottom
Electric ring is semicircular arc；After two lower half circular arc portion docking, semiconductive ring is relative outside two bottoms constitutes whole annular
Bottom outside conducting ring, conducting ring in the relative bottom for constituting whole annular of semiconductive ring in two bottoms, two and half take energy
Magnetic core is relative constitute whole annular take can magnetic core, the relative sampling magnetic core for constituting whole annular of two and half sampling magnetic cores,
Take can magnetic core outer ring winding taking energy coil, sample magnetic core outer ring be wound with sampling coil, take can magnetic core and thereon take energy
Coil is folded in outside bottom in conducting ring and bottom between conducting ring, and sampling magnetic core and sampling coil thereon are also folded in
Outside bottom in conducting ring and bottom between conducting ring, take can magnetic core interval located at the upside of sampling magnetic core；
Take can magnetic core sectional area be sample magnetic core sectional area times.
The model of the amplifier U1 and amplifier U2 is LM833.
Described control unit is ARM9 controllers.
Model WX-PW-SJJC-002 of the data monitoring device；Beidou navigation is provided with the data monitoring device
Module, model WX-BD-IOT-002 of the Beidou navigation module；
Model WX-RF-IOT-003 of the wireless module.
With a kind of described synchronous sampling method supporting based on the circuit distribution monitoring system being wirelessly transferred, it is including as follows
Step：
Step 1：Control unit is initialized, and control unit is initialized to wireless module；Control unit is carried out just
The content of beginningization includes：Initialization clock counter and initialization sample counter；
Step 2：Control unit enters standby resting state；
Step 3：Data monitoring device obtains correct time by Beidou navigation module, and the correct time is by big-dipper satellite
There is provided, data monitoring device generates time scale information according to the correct time, and generates synchronizing information according to time scale information；
Data monitoring device to monitoring instruction device sends synchronizing information, and the wireless module for monitoring instruction device receives synchronous
Simultaneously there is wireless receiving interruption in information, synchronizing information is sent to control unit by wireless module, and control unit receives synchronous letter
Wake up from standby resting state after breath and enter mode of operation, and read the data that wireless module is received, control unit judges nothing
Whether the data that wire module is received include correct synchronizing information：Comprising then execution step 4；Do not include, then execution step 2；
Step 4：Time scale information of the control unit in synchronizing information makes itself correcting the clock counter of itself
Clock counter is synchronous with time scale information；
Control unit resets sample counter according to clock counter；
Step 5：Control unit according to sample counter trigger equal interval sampling order, sampling module according at equal intervals
Current data and voltage data in sample command collection distribution line, and current data and voltage data are transmitted single to control
Unit；
Step 6：Control unit will current data and voltage data process after generate sampled data, control unit is by hits
According to wireless module is sent to, wireless module sends sampled data to data monitoring device；
According to sampled data calculating current virtual value, whether control unit judges current effective value more than 3A to control unit：
More than then execution step 5；No more than, then execution step 2.
It is of the present invention a kind of based on the circuit distribution monitoring system being wirelessly transferred and synchronous sampling method, by wireless
The transmission method of synchronization realizes the synchronous acquisition of three-phase current voltage, realizes the Real-time Collection of line status, solves and how to ensure
Sex chromosome mosaicism while data acquisition, it is ensured that the accuracy that transformer station is judged distribution line failure, the management to strengthening electrical network
There is provided strong technical support.
Description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the theory diagram of the monitoring instruction device of the present invention；
Fig. 3 is the schematic diagram of the voltage doubling rectifing circuit of the present invention；
Fig. 4 is the schematic diagram of the sampling module of the present invention；
Fig. 5 is the flow chart of the present invention；
Fig. 6 is the structural representation of upper half circular arc portion and lower half circular arc portion；
Fig. 7 is the structural representation of upper magnetic core 114 and conducting ring 115 in conducting ring 113 outside top and top；
Fig. 8 is the structural representation for taking energy magnetic core 118 and conducting ring 117 in conducting ring 116 outside bottom and bottom；
Fig. 9 is the structural representation of sampling magnetic core 119 and conducting ring 117 in conducting ring 116 outside bottom and bottom；
In figure：Current Voltage sensor 1, power module 2, backup battery 3, wireless module 5, sampling module 6, control unit
7th, semiconductive ring 101 in data monitoring device 8, monitoring instruction device 9, top, semiconductive ring outside upper half magnetic core 102, top
103rd, semiconductive ring 107 outside semiconductive ring 106, bottom in upper half circular arc portion 104, upper magnetic ring coil 105, bottom, partly take energy
Conducting ring outside magnetic core 108, half sampling magnetic core 109, lower half circular arc portion 110, sampling coil 111, taking energy coil 112, top
113rd, conducting ring 117 in conducting ring 116, bottom outside conducting ring 115, bottom in upper magnetic core 114, top, take can magnetic core 118, adopt
Sample magnetic core 119.
Specific embodiment
Embodiment one：
As Figure 1-4 a kind of based on the circuit distribution monitoring system being wirelessly transferred, including several distribution monitoring units,
Each distribution monitoring unit refers to including a data monitoring device 8 and the several monitorings communicated with the data monitoring device 8
Showing device 9；
The monitoring instruction device 9 includes Current Voltage sensor 1, sampling module 6, power module 2, backup battery 3, control
Unit processed 7 and wireless module 5；
Current Voltage sensor 1 is provided with sampling coil 111 and taking energy coil 112, and sampling coil 111 connects sampling module 6,
Sampling module 6 connects control unit 7, and the connection wireless module 5 of control unit 7, the connection voltage doubling rectifing circuit of taking energy coil 112 takes
Energy coil 112 is also connected with power module 2, and backup battery 3 connects power module 2, and power module 2 is sampling module 6, control unit
7 and wireless module 5 power, power module 2 output positive supply；
Wireless module 5 communicates with the data monitoring device 8；
Communication interface between wireless module and control unit is SPI, and wireless module is additionally provided with output end OSC, output end
IRQ0 and output end IRQ1, output end OSC is that the divided lock of wireless module crystal oscillator is mutually exported, frequency 12M, temperature drift coefficient 5ppM,
Used as the higher-order of oscillation source input signal of control unit, output end IRQ0 and output end IRQ1 are respectively carrier wave prison to output end OSC
Interruption is listened to interrupt with receiving, when wireless module detects the wireless carrier signal that data acquisition unit sends and locks by defeated
Go out to hold IRQ0 to send IRQ0 signals, IRQ1 is sent by output end IRQ1 when data receiver is complete and is interrupted, disparate modules are indirectly
Timing error is received after testing between 6-10uS,, used as the process time delay td1 of wireless module, control unit received in this for this
Have no progeny, start read wireless receiving to data and analyze, in the process control unit process time be td2, then upload
Acknowledgement frame, data monitoring device receives and starts to calculate transmission and data processing time delay after the confirmation signal of harvester：
Ttd=tm2-tm1- (2 × td1+td2)；
Wherein tm2 receives the moment of data for data monitoring device；Tm1 sends the moment of data for device；
Ttd parameters are sent together to harvester when school is sent out as parameter error offset during school during order, by by mistake
The clocking error of difference amendment harvester and data monitoring device is less than 2uS, during many phase acquisitions of multiple spot, respectively during phase each to each point
Clock is calibrated respectively.
Power module is provided with voltage doubling rectifing circuit, voltage doubling rectifing circuit include diode D1, diode D2, diode D3,
Diode D4, diode D5, diode D6, diode D7, diode D8, farad capacitor C1, farad capacitor C2 and electric capacity C3, take
One end of energy coil 112 connects the negative pole of diode D1, and the other end connects the positive pole of diode D5, the negative pole connection of diode D5
The positive pole of diode D3, the negative pole of diode D3 connects the positive pole of diode D1, and the negative pole of diode D1 is also connected with diode D6
Positive pole, the negative pole of diode D6 connects the positive pole of diode D4, and the negative pole of diode D4 connects the positive pole of diode D2, two poles
The negative pole of pipe D2 connects the positive pole of farad capacitor C2, the negative pole connection ground wire of farad capacitor C2, the positive pole connection two of diode D6
The positive pole of pole pipe D7, the negative pole of diode D7 connects the positive pole of farad capacitor C1, the negative pole connection diode D2 of farad capacitor C1
Negative pole, the positive pole of farad capacitor C2 is also connected with the positive pole of diode D8, and the negative pole of diode D8 connects the positive pole of diode D6,
The positive pole of farad capacitor C1 also connects ground wire by electric capacity C3；
The capacity of farad capacitor C1 and farad capacitor C2 is 0.5 farad, and full of electricity condition energy W=1/2C is stored
(5.0-UlowΔU)2, wherein Ulow is that the minimum of the minium operation voltage of MCU, control unit and wireless module is equal
For 2.2V, Ulow=2.4V is taken, thus calculate fully charged rear farad capacitor and store energy W=1.69J.
Control unit operating current is 900uA, and wireless module work average current is 30mA, in communication speed 25kbps feelings
Byte number 3840 is transmitted under condition, emission duration is about 2s, and consumed energy is W=UI Δ t=0.18J, less than farad capacitor
The energy of storage, thus this design meets the requirement of work.
Sampling module 6 include electric capacity C4, electric capacity C5, electric capacity C6, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5,
Amplifier U1 and amplifier U2, one end of sampling coil 111 connects 1 pin of resistance R2, and the other end connects 1 pin of resistance R3, electricity
1 pin of resistance R2 also connects ground wire by electric capacity C6, and 1 pin of resistance R3 also connects ground wire, the 2 pin connection of resistance R2 by electric capacity C4
2 pin of amplifier U1,2 pin of resistance R3 connect 3 pin of amplifier U1, and 2 pin of resistance R3 also connect ground wire, put by resistance R4
The 8 pin connection positive supply of big device U1, the 4 pin connection ground wire of amplifier U1,1 pin of amplifier U1 connects amplifier by resistance R1
2 pin of U1,1 pin of amplifier U1 connects ground wire by electric capacity C5, and 1 pin of amplifier U1 is also connected with 3 pin of amplifier U2, amplifies
2 pin of device U2 connect 1 pin of amplifier U2, and the 8 pin connection positive supply of amplifier U2, the 4 pin connection ground wire of amplifier U2 amplifies
1 pin of device U2 also connects described control unit 7 by resistance R5.
Current Voltage sensor 1 is Open Type Electric Current Mutual Inductor as described in Fig. 6-9, and the Open Type Electric Current Mutual Inductor includes
Upper and lower, the top includes two upper half circular arc portions 104 that can be opened and dock, and upper half circular arc portion 104 includes
Semiconductive ring 101 in semiconductive ring 103, upper half magnetic core 102 and top, partly leads outside top outside the top for setting gradually from outside to inside
Semiconductive ring 101 and upper half magnetic core 102 are semicircular arc in electric ring 103, top；After two upper half circular arc portions 104 are docked,
Semiconductive ring 103 constitutes conducting ring 113 outside the top of whole annular, semiconductive ring in two tops relatively outside two tops
Conducting ring 115 in the 101 relative tops for constituting whole annular, two upper half magnetic cores 102 constitute the upper of whole annular relatively
Magnetic core 114, the outer ring of upper magnetic core 114 is wound with upper magnetic ring coil 105, and upper magnetic core 114 and upper magnetic ring coil 105 thereon are pressed from both sides
It is located at outside top in conducting ring 113 and top between conducting ring 115；
The bottom includes two lower half circular arc portions 110 that can be opened and dock, and lower half circular arc portion 110 is included by outer
The semiconductive ring 106 to semiconductive ring 107, lower half core assembly and bottom outside the interior bottom for setting gradually, lower half core assembly
Including up and down it is spaced partly take can magnetic core 108 and half sampling magnetic core 109, semiconductive ring 107 bottom outside, partly take energy magnetic core
108th, semiconductive ring 106 is semicircular arc in half sampling magnetic core 109 and bottom；After two lower half circular arc portions 110 are docked, two
Semiconductive ring 107 constitutes conducting ring 116 outside the bottom of whole annular, semiconductive ring 106 in two bottoms relatively outside individual bottom
Conducting ring 117 in the relative bottom for constituting whole annular, two and half take can magnetic core 108 it is relative constitute whole annular take energy
Magnetic core 118, the relative sampling magnetic core 119 for constituting whole annular of two and half sampling magnetic cores 109, the outer ring for taking energy magnetic core 118 twines
Around taking energy coil 112, the outer ring of magnetic core 119 of sampling is wound with sampling coil 111, and taking can magnetic core 118 and taking energy coil thereon
112 are folded in outside bottom in conducting ring 116 and bottom between conducting ring 117, sampling magnetic core 119 and sampling coil thereon
111 are also folded in outside bottom in conducting ring 116 and bottom between conducting ring 117, take can the interval of magnetic core 118 located at sampling magnetic core
119 upside；
The sectional area for taking energy magnetic core 118 is 4 times of the sectional area of sampling magnetic core 119；Take energy magnetic core 118 to take for device
Can, sampling magnetic core 119 is used to sample；
Effective initial relative permeability of split type magnetic core (taking energy magnetic core 118 and sampling magnetic core 119) is easy to more than 8000
In small current power taking, wherein the cross section for taking energy magnetic core 118 is 1cm2.Sampling magnetic core 119 cross section is 0.25cm2, internal diameter
55mm, external diameter 75mm, line current 3A, taking energy coil 112 is 800 circle output voltage 1.36V, and Jing power module voltage multiplying rectifiers are obtained
The DC voltage of 4V is obtained, job requirement of the device under low-power consumption is met；Sampling coil 111 be 1500 circles, the Europe of load resistance 5.1
Nurse；The output end of taking energy coil 112 and the output end of sampling coil 111 all added with shock resistance, current foldback circuit, while mutual in electric current
Sensor inner and outer is respectively added with conducting ring 116 outside conducting ring 115, bottom in conducting ring outside top 113, top and bottom
Conducting ring 117 is used for the electric-field intensity of the change around induction line.
The model of the amplifier U1 and amplifier U2 is LM833.
Described control unit 7 is ARM9 controllers.
Model WX-PW-SJJC-002 of the data monitoring device 8；The Big Dipper is provided with the data monitoring device 8 to lead
Model plane block, model WX-BD-IOT-002 of the Beidou navigation module；
Model WX-RF-IOT-003 of the wireless module 5.
Embodiment two：
As shown in figure 5, with implement a kind of based on supporting synchronous of the circuit distribution monitoring system being wirelessly transferred described in one
The method of sampling, be implement one described in it is a kind of based on the circuit distribution monitoring system being wirelessly transferred on the basis of realize, bag
Include following steps：
Step 1：Control unit 7 is initialized, and control unit 7 is initialized to wireless module 5；Control unit 7 is entered
The initialized content of row includes：Initialization clock counter and initialization sample counter；
Step 2：Control unit 7 enters standby resting state；
Step 3：Data monitoring device 8 obtains correct time by Beidou navigation module, and the correct time is defended by the Big Dipper
Star is provided, and data monitoring device 8 generates time scale information according to the correct time, and generates synchronizing information according to time scale information；
Data monitoring device 8 to monitoring instruction device 9 sends synchronizing information, and the wireless module 5 for monitoring instruction device 9 is received
Simultaneously there is wireless receiving interruption in synchronizing information, synchronizing information is sent to control unit 7 by wireless module 5, and control unit 7 is received
Wake up from standby resting state after synchronizing information and enter mode of operation, and read the data that wireless module 5 is received, control unit
7 judge whether the data that wireless module 5 is received include correct synchronizing information：Comprising then execution step 4；Do not include, then hold
Row step 2；
Step 4：Time scale information of the control unit 7 in synchronizing information makes itself correcting the clock counter of itself
Clock counter it is synchronous with time scale information；
Control unit 7 resets sample counter according to clock counter；
Step 5：Control unit 7 triggers equal interval sampling order according to sample counter, and sampling module 6 is according between the grade
The current data and voltage data in distribution line is gathered every sample command, and current data and voltage data are transmitted to control
Unit 7；
Step 6：Control unit 7 generates sampled data after processing current data and voltage data, control unit 7 will sample
Data is activation sends sampled data to data monitoring device 8 to wireless module 5, wireless module 5；
Control unit 7 judges whether current effective value is more than according to sampled data calculating current virtual value, control unit 7
3A：More than then execution step 5；No more than, then execution step 2.
The present invention greatly reduces the work(of device using the synchronous synchronism for replacing GPS/GPRS to realize collection is wirelessly transferred
Consumption, gps signal is controlled by US military, and the uncertain factor of its operation to acquisition system is larger, equally because of wireless public network
When the clock of GPRS is also adopted by GPS pair, shortcoming is similarly obvious, while GPS/GPRS is used for harvester, it is because of power consumption greatly, uncomfortable
Use circuit harvester；The data monitoring device of the present invention is complete from the Beidou navigation module for possessing Intellectual Property Right in China completely
Above-mentioned impact is eliminated entirely；The punctual precision of the system of the present invention is less than 50nS, realizes whole network data synchronous acquisition, greatly carries
The high reliability of data analysis, for electrical network big data high in the clouds platform strong data supporting is provided.
The present invention is distributed in several monitoring instruction devices on power network line, and the synchronization for realizing many phase datas of multiple spot is adopted
Collect, the analysis for being conducive to line fault judges, the data that data monitoring terminal collects the monitoring instruction device of respective subordinate
Be uploaded to Bulk Supply Substation, Bulk Supply Substation according to certain data model analysis circuit characteristic signal, the real-time working condition to circuit
It is analyzed, real-time judge, preserves voltage current waveform of the circuit before and after bursty state, improves the reliability of analysis result
With real-time；
Power consumption of the monitoring instruction device of present invention when standby is less than 20uW, makes the present invention be more applicable for distribution line
Operating mode synchronous acquisition.
It is of the present invention a kind of based on the circuit distribution monitoring system being wirelessly transferred and synchronous sampling method, by wireless
The transmission method of synchronization realizes the synchronous acquisition of three-phase current voltage, realizes the Real-time Collection of line status, solves and how to ensure
Sex chromosome mosaicism while data acquisition, it is ensured that the accuracy that transformer station is judged distribution line failure, the management to strengthening electrical network
There is provided strong technical support.
Claims (7)
1. a kind of based on the circuit distribution monitoring system being wirelessly transferred, it is characterised in that：It is each including several distribution monitoring units
Individual distribution monitoring unit refers to including a data monitoring device (8) and the several monitorings communicated with the data monitoring device (8)
Showing device (9)；
Monitoring instruction device (9) is including Current Voltage sensor (1), sampling module (6), power module (2), backup battery
(3), control unit (7) and wireless module (5)；
Current Voltage sensor (1) is provided with sampling coil (111) and taking energy coil (112), sampling coil (111) connection sampling mould
Block (6), sampling module (6) connection control unit (7), control unit (7) connection wireless module (5), taking energy coil (112) connection
Voltage doubling rectifing circuit, taking energy coil (112) is also connected with power module (2), backup battery (3) connection power module (2), power supply mould
Block (2) is sampling module (6), control unit (7) and wireless module (5) are powered, power module (2) output positive supply；
Wireless module (5) communicates with the data monitoring device (8)；
Power module (2) is provided with voltage doubling rectifing circuit, voltage doubling rectifing circuit include diode D1, diode D2, diode D3, two
Pole pipe D4, diode D5, diode D6, diode D7, diode D8, farad capacitor C1, farad capacitor C2 and electric capacity C3, take energy
One end of coil (112) connects the negative pole of diode D1, and the other end connects the positive pole of diode D5, the negative pole connection of diode D5
The positive pole of diode D3, the negative pole of diode D3 connects the positive pole of diode D1, and the negative pole of diode D1 is also connected with diode D6
Positive pole, the negative pole of diode D6 connects the positive pole of diode D4, and the negative pole of diode D4 connects the positive pole of diode D2, two poles
The negative pole of pipe D2 connects the positive pole of farad capacitor C2, the negative pole connection ground wire of farad capacitor C2, the positive pole connection two of diode D6
The positive pole of pole pipe D7, the negative pole of diode D7 connects the positive pole of farad capacitor C1, the negative pole connection diode D2 of farad capacitor C1
Negative pole, the positive pole of farad capacitor C2 is also connected with the positive pole of diode D8, and the negative pole of diode D8 connects the positive pole of diode D6,
The positive pole of farad capacitor C1 also connects ground wire by electric capacity C3；
Sampling module (6) including electric capacity C4, electric capacity C5, electric capacity C6, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, put
Big device U1 and amplifier U2, one end of sampling coil (111) connects 1 pin of resistance R2, and the other end connects 1 pin of resistance R3, electricity
1 pin of resistance R2 also connects ground wire by electric capacity C6, and 1 pin of resistance R3 also connects ground wire, the 2 pin connection of resistance R2 by electric capacity C4
2 pin of amplifier U1,2 pin of resistance R3 connect 3 pin of amplifier U1, and 2 pin of resistance R3 also connect ground wire, put by resistance R4
The 8 pin connection positive supply of big device U1, the 4 pin connection ground wire of amplifier U1,1 pin of amplifier U1 connects amplifier by resistance R1
2 pin of U1,1 pin of amplifier U1 connects ground wire by electric capacity C5, and 1 pin of amplifier U1 is also connected with 3 pin of amplifier U2, amplifies
2 pin of device U2 connect 1 pin of amplifier U2, and the 8 pin connection positive supply of amplifier U2, the 4 pin connection ground wire of amplifier U2 amplifies
1 pin of device U2 also connects described control unit (7) by resistance R5.
2. as claimed in claim 1 a kind of based on the circuit distribution monitoring system being wirelessly transferred, it is characterised in that：The electric current
Voltage sensor (1) is Open Type Electric Current Mutual Inductor, and the Open Type Electric Current Mutual Inductor includes upper and lower, the top bag
Two upper half circular arc portions (104) that can be opened and dock are included, upper half circular arc portion (104) is including what is set gradually from outside to inside
Semiconductive ring (101) in semiconductive ring (103), upper half magnetic core (102) and top outside top, semiconductive ring (103) outside top, on
Semiconductive ring (101) and upper half magnetic core (102) are semicircular arc in portion；After two upper half circular arc portion (104) docking, two
Semiconductive ring (103) constitutes conducting ring (113) outside the top of whole annular, semiconductive ring in two tops relatively outside top
(101) conducting ring (115) in the relative top for constituting whole annular, two upper half magnetic cores (102) constitute whole annulus relatively
The upper magnetic core (114) of shape, the outer ring of upper magnetic core (114) is wound with upper magnetic ring coil (105), upper magnetic core (114) and thereon upper
Magnetic ring coil (105) is folded in conducting ring outside top (113) and top between conducting ring (115)；
The bottom includes two lower half circular arc portions (110) that can be opened and dock, and lower half circular arc portion (110) is included by outer
The semiconductive ring (106) to semiconductive ring (107), lower half core assembly and bottom outside the interior bottom for setting gradually, lower half magnetic core
Component include up and down it is spaced partly take can magnetic core (108) and half sampling magnetic core (109), semiconductive ring (107) outside bottom, partly
Take semiconductive ring (106) in energy magnetic core (108), half sampling magnetic core (109) and bottom and be semicircular arc；Two lower half arc sections
After dividing (110) docking, conducting ring (116) outside the relative bottom for constituting whole annular of semiconductive ring (107) outside two bottoms, two
Conducting ring (117) in the relative bottom for constituting whole annular of semiconductive ring (106) in individual bottom, two and half take energy magnetic core
(108) constitute whole annular relatively takes energy magnetic core (118), the whole annular of the relative composition of two and half samplings magnetic core (109)
Sampling magnetic core (119), take can magnetic core (118) outer ring winding taking energy coil (112), sample magnetic core (119) outer ring winding
Have sampling coil (111), take can magnetic core (118) and taking energy coil (112) thereon be folded in conducting ring bottom outside (116) and
In bottom between conducting ring (117), sampling magnetic core (119) and sampling coil (111) thereon are also folded in conduction outside bottom
In ring (116) and bottom between conducting ring (117), energy magnetic core (118) interval is taken located at the upside of sampling magnetic core (119)；
The sectional area for taking energy magnetic core (118) is 4 times of the sectional area of sampling magnetic core (119).
3. as claimed in claim 1 a kind of based on the circuit distribution monitoring system being wirelessly transferred, it is characterised in that：The amplification
The model of device U1 and amplifier U2 is LM833.
4. as claimed in claim 1 a kind of based on the circuit distribution monitoring system being wirelessly transferred, it is characterised in that：The control
Unit (7) is ARM9 controllers.
5. as claimed in claim 1 a kind of based on the circuit distribution monitoring system being wirelessly transferred, it is characterised in that：The data
Model WX-PW-SJJC-002 of monitoring device (8)；Beidou navigation module is provided with the data monitoring device (8), it is described
Model WX-BD-IOT-002 of Beidou navigation module.
6. as claimed in claim 1 a kind of based on the circuit distribution monitoring system being wirelessly transferred, it is characterised in that：It is described wireless
Model WX-RF-IOT-003 of module (5).
7. with a kind of synchronous sampling method supporting based on the circuit distribution monitoring system being wirelessly transferred described in claim 1,
It is characterized in that：Comprise the steps：
Step 1：Control unit (7) is initialized, and control unit (7) is initialized to wireless module (5)；Control unit
(7) carrying out initialized content includes：Initialization clock counter and initialization sample counter；
Step 2：Control unit (7) is into standby resting state；
Step 3：Data monitoring device (8) obtains correct time by Beidou navigation module, and the correct time is by big-dipper satellite
There is provided, data monitoring device (8) generates time scale information according to the correct time, and generates synchronizing information according to time scale information；
Data monitoring device (8) to monitoring instruction device (9) sends synchronizing information, monitors the wireless module (5) of instruction device (9)
Receive synchronizing information and wireless receiving interruption occurs, synchronizing information is sent to control unit (7) by wireless module (5), and control is single
First (7) receive to be waken up from standby resting state after synchronizing information and enter mode of operation, and read what wireless module (5) was received
Data, control unit (7) judges whether the data that wireless module (5) is received include correct synchronizing information：Comprising then performing
Step 4；Do not include, then execution step 2；
Step 4：Time scale information of the control unit (7) in synchronizing information makes itself correcting the clock counter of itself
Clock counter is synchronous with time scale information；
Control unit (7) resets sample counter according to clock counter；
Step 5：Control unit (7) triggers equal interval sampling order according to sample counter, and sampling module (6) is according between the grade
The current data and voltage data in distribution line is gathered every sample command, and current data and voltage data are transmitted to control
Unit (7)；
Step 6：Control unit (7) generates sampled data after processing current data and voltage data, control unit (7) will sample
Data is activation sends sampled data to data monitoring device (8) to wireless module (5), wireless module (5)；
Control unit (7) judges whether current effective value is more than according to sampled data calculating current virtual value, control unit (7)
3A：More than then execution step 5；No more than, then execution step 2.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611113447.5A CN106646122A (en) | 2016-12-07 | 2016-12-07 | Line distribution monitoring system based on wireless transmission and synchronization sampling method |
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| CN201611113447.5A CN106646122A (en) | 2016-12-07 | 2016-12-07 | Line distribution monitoring system based on wireless transmission and synchronization sampling method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109407118A (en) * | 2018-11-30 | 2019-03-01 | 云南电网有限责任公司红河供电局 | Data monitoring terminal and its control method based on big-dipper satellite |
| CN110161324A (en) * | 2019-06-13 | 2019-08-23 | 重庆大学 | A kind of measurement of low frequency electric field Multipoint synchronous and radio transmitting method |
| CN110690756A (en) * | 2019-08-15 | 2020-01-14 | 国网浙江省电力有限公司金华供电公司 | Intelligent management and control system for grounding wire of power transmission line |
| CN111579926A (en) * | 2020-05-22 | 2020-08-25 | 东北电力大学 | Distributed power fault positioning method for power distribution network |
| CN112801320A (en) * | 2021-02-05 | 2021-05-14 | 苏州捷杰传感技术有限公司 | Data acquisition system, monitoring system and data acquisition method for rail train bearing |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102012449A (en) * | 2010-11-01 | 2011-04-13 | 铜川供电局 | Wireless on-line monitoring system for zinc oxide lightning arrester of electric transmission line |
| CN102298099A (en) * | 2011-07-13 | 2011-12-28 | 西安市双合软件技术有限公司 | Power distribution and consumption monitoring and measuring apparatus possessing time calibration function |
| CN202661572U (en) * | 2012-06-30 | 2013-01-09 | 合肥科盟电子科技有限责任公司 | Digital failure indicator for distribution network |
| CN103472404A (en) * | 2012-06-06 | 2013-12-25 | 鸿富锦精密工业（深圳）有限公司 | Grounding detection circuit |
| CN104991204A (en) * | 2015-07-17 | 2015-10-21 | 中国石油集团渤海钻探工程有限公司 | A multi-channel signal acquisition circuit for downhole power system parameter measurement |
| CN205333781U (en) * | 2016-01-20 | 2016-06-22 | 安徽北斗易通信息技术有限公司 | Adopt compass positioning system's multi -functional built on stilts type fault indicator |
| CN105807126A (en) * | 2016-04-28 | 2016-07-27 | 四川瑞霆电力科技有限公司 | Overhead distribution line zero-sequence current acquisition terminal and method based on clock synchronization |
| CN105911399A (en) * | 2016-06-17 | 2016-08-31 | 上海策元实业有限公司 | High-voltage power transmission line testing and alarming system |
| CN205665356U (en) * | 2016-06-06 | 2016-10-26 | 国网山东省电力公司东阿县供电公司 | System for carry out remote monitoring communication to distribution lines trouble |
-
2016
- 2016-12-07 CN CN201611113447.5A patent/CN106646122A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102012449A (en) * | 2010-11-01 | 2011-04-13 | 铜川供电局 | Wireless on-line monitoring system for zinc oxide lightning arrester of electric transmission line |
| CN102298099A (en) * | 2011-07-13 | 2011-12-28 | 西安市双合软件技术有限公司 | Power distribution and consumption monitoring and measuring apparatus possessing time calibration function |
| CN103472404A (en) * | 2012-06-06 | 2013-12-25 | 鸿富锦精密工业（深圳）有限公司 | Grounding detection circuit |
| CN202661572U (en) * | 2012-06-30 | 2013-01-09 | 合肥科盟电子科技有限责任公司 | Digital failure indicator for distribution network |
| CN104991204A (en) * | 2015-07-17 | 2015-10-21 | 中国石油集团渤海钻探工程有限公司 | A multi-channel signal acquisition circuit for downhole power system parameter measurement |
| CN205333781U (en) * | 2016-01-20 | 2016-06-22 | 安徽北斗易通信息技术有限公司 | Adopt compass positioning system's multi -functional built on stilts type fault indicator |
| CN105807126A (en) * | 2016-04-28 | 2016-07-27 | 四川瑞霆电力科技有限公司 | Overhead distribution line zero-sequence current acquisition terminal and method based on clock synchronization |
| CN205665356U (en) * | 2016-06-06 | 2016-10-26 | 国网山东省电力公司东阿县供电公司 | System for carry out remote monitoring communication to distribution lines trouble |
| CN105911399A (en) * | 2016-06-17 | 2016-08-31 | 上海策元实业有限公司 | High-voltage power transmission line testing and alarming system |
Non-Patent Citations (2)
| Title |
|---|
| 戴栋等: "输电线路在线监测装置研制及其通信组网应用", 《高电压技术》 * |
| 黄重春等: "基于北斗通信的架空线路故障监测系统的设计与实现", 《安徽师范大学学报》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109407118A (en) * | 2018-11-30 | 2019-03-01 | 云南电网有限责任公司红河供电局 | Data monitoring terminal and its control method based on big-dipper satellite |
| CN110161324A (en) * | 2019-06-13 | 2019-08-23 | 重庆大学 | A kind of measurement of low frequency electric field Multipoint synchronous and radio transmitting method |
| CN110690756A (en) * | 2019-08-15 | 2020-01-14 | 国网浙江省电力有限公司金华供电公司 | Intelligent management and control system for grounding wire of power transmission line |
| CN111579926A (en) * | 2020-05-22 | 2020-08-25 | 东北电力大学 | Distributed power fault positioning method for power distribution network |
| CN112801320A (en) * | 2021-02-05 | 2021-05-14 | 苏州捷杰传感技术有限公司 | Data acquisition system, monitoring system and data acquisition method for rail train bearing |
| CN112801320B (en) * | 2021-02-05 | 2024-04-02 | 苏州捷杰传感技术有限公司 | Data acquisition system, monitoring system and data acquisition method for rail train bearing |
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