CN104849553A - Collection apparatus and method of distribution network data - Google Patents
Collection apparatus and method of distribution network data Download PDFInfo
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- CN104849553A CN104849553A CN201510290571.8A CN201510290571A CN104849553A CN 104849553 A CN104849553 A CN 104849553A CN 201510290571 A CN201510290571 A CN 201510290571A CN 104849553 A CN104849553 A CN 104849553A
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Abstract
The invention discloses a collection apparatus and method of distribution network data. The apparatus comprises: a clock signal obtaining unit, which is used for obtaining a clock signal; a collection unit, which is connected with the clock signal obtaining unit and is used for collecting power data of the distribution network according to the clock signal; and a control unit, which is connected with the collection unit and is used for carrying out processing and/or forwarding on the collected power data of the distribution network. According to the embodiment of the invention, the external precise clock signal is obtained; and according to the obtained clock signal, the collection device is triggered to collect the power data of the distribution network. Therefore, an objective of unified collection of the data of the distribution network can be achieved; a technical effect of obtaining data information of the same time section of the distribution network can be realized; and a technical problem of being lack of accurate time mark information for data collection of the distribution network in relevant technologies can be solved.
Description
Technical field
The present invention relates to electronic test equipment field, in particular to a kind of harvester and method of power distribution network data.
Background technology
Operation of Electric Systems, the accurate assurance of analyst to electrical network characteristic depend on the Real Time Monitoring based on electric network model.Electrical network parameter forms electric network model accurately to carry out the basis of power system computation accurately.Therefore, improve accuracy and the reliability of electrical network parameter, the safe and stable operation of short-term load is significant.
Current power distribution network image data mostly is each autonomous device collection, the data of each independently equipment collection lack time scale information accurately, when carrying out the work such as tidal current analysis, state estimation, Loop Closing Operation, cannot obtain the data message of same time cross-section, therefore the precision of result of calculation will inevitably be a greater impact.
Lack the problem of time scale information accurately for power distribution network image data in prior art, not yet propose effective solution at present.
Summary of the invention
Embodiments provide a kind of harvester and method of power distribution network data, lack the technical matters of time scale information accurately at least to solve power distribution network image data in correlation technique.
According to an aspect of the embodiment of the present invention, provide a kind of harvester of power distribution network data, comprising: clock signal acquiring unit, for obtaining clock signal; Collecting unit, is connected with described clock signal acquiring unit, for gathering the electric power data of described power distribution network according to described clock signal; And control module, is connected with described collecting unit, for the electric power data of the described power distribution network gathered is carried out processing and/or forwarding.
Alternatively, described clock signal acquiring unit comprises:
First acquisition module, for obtaining global position system GPS clock signal;
Second acquisition module, for obtaining big-dipper satellite clock signal;
3rd acquisition module, for obtaining surveying instrument group IRIG-B clock signal between target range;
First FPGA control chip, be connected with described first acquisition module, the second acquisition module and the 3rd acquisition module respectively, obtain the process of described clock signal for controlling described first acquisition module, the second acquisition module and the 3rd acquisition module and the described clock signal obtained is demarcated.
Alternatively, described clock signal acquiring unit also comprises: crystal oscillator, is connected with described first FPGA control chip, for providing reference clock signal source for described first FPGA control chip.
Alternatively, described collecting unit comprises: phasor acquisition module, for receiving described clock signal, and gathers voltage phasor data and/or the current phasor data of described power distribution network according to described clock signal; And digital module, for receiving described clock signal, and gather the action time data of the external switch of described power distribution network according to described clock signal.
Alternatively, described phasor acquisition module comprises: voltage, current transformer, for gathering voltage phasor data and/or the current phasor data of described power distribution network; Analog to digital converter, for converting the voltage phasor data of the described power distribution network gathered and/or current phasor data to digital signal by simulating signal; Second FPGA control chip, is connected with described analog to digital converter, carries out analog to digital conversion for triggering described analog to digital converter according to described clock signal.
Alternatively, described digital module comprises: the 3rd FPGA control chip, for demarcating according to the action time data of described clock signal to described power distribution network external switch.
Alternatively, described control module comprises: the 4th FPGA control chip, and the electric power data for the described power distribution network gathered described collecting unit carries out buffer memory; ARM process chip, the electric power data for described power distribution network carries out processing and/or forwarding.
According to another aspect of the embodiment of the present invention, a kind of acquisition method of power distribution network data is also provided, it is characterized in that, comprising:
Obtain clock signal;
The electric power data of described power distribution network is gathered according to described clock signal triggering collection equipment; And,
The electric power data of the described power distribution network gathered is carried out processing and/or forwarding.
Alternatively, described clock signal comprise following one of at least: global position system GPS clock signal, surveying instrument group IRIG-B clock signal between big-dipper satellite clock signal and target range.
Alternatively, the electric power data of described power distribution network comprise following one of at least: the action time data of the voltage phasor data of described power distribution network, current phasor data, external switch.
Alternatively, described gather the electric power data of described power distribution network according to described clock signal triggering collection equipment after, also comprise: convert the voltage phasor data of the described power distribution network gathered and/or current phasor data to digital signal by simulating signal, wherein, the electric power data of the described power distribution network gathered is carried out processing and/or forwarding comprising: the described voltage phasor data of digital signal form and/or described current phasor data are carried out processing and/or forwarding.
In embodiments of the present invention, by obtaining outside clock signal accurately, according to the electric power data of the clock signal obtained triggering collection equipment collection simultaneously power distribution network, reach the unified object gathered of power distribution network data, thus achieve the technique effect of the data message obtaining power distribution network same time cross-section, and then solve power distribution network image data in correlation technique and lack the technical matters of time scale information accurately.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is according to the optional a kind of electric distribution network data collection apparatus structure block diagram of the embodiment of the present invention;
Fig. 2 is the harvester structured flowchart according to the optional another kind of power distribution network data of the embodiment of the present invention;
Fig. 3 is the harvester structured flowchart according to the optional another kind of power distribution network data of the embodiment of the present invention;
Fig. 4 is the harvester structured flowchart according to the optional another kind of power distribution network data of the embodiment of the present invention;
Fig. 5 is the acquisition method process flow diagram according to the optional a kind of power distribution network data of the embodiment of the present invention;
Fig. 6 is the acquisition method process flow diagram according to the optional another kind of power distribution network data of the embodiment of the present invention.
Embodiment
The present invention program is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the embodiment of a part of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, should belong to the scope of protection of the invention.
Embodiment 1:
Fig. 1 is the harvester structured flowchart according to the optional a kind of power distribution network data of the embodiment of the present invention.
As shown in Figure 1, the harvester of power distribution network data mainly comprises clock signal acquiring unit 1, collecting unit 2 and control module 3, and wherein, clock signal acquiring unit 1 is for obtaining clock signal; Collecting unit 2 is connected with clock signal acquiring unit 1, for gathering the electric power data of power distribution network according to clock signal; Control module 3 is connected with collecting unit 2, and the electric power data for the power distribution network by collection carries out processing and/or forwarding.Clock signal acquiring unit 1 primary responsibility provides clock signal accurately for collecting unit 2, and the clock signal of acquisition is used for the electric power data that triggering collection unit 2 gathers power distribution network.
The embodiment of the present invention is by obtaining clock signal accurately, the electric power data of clock signal triggering collection equipment to required power distribution network according to obtaining gathers, the data message of the same time cross-section of power distribution network can be obtained, thus the precision of result of calculation is improved when carrying out the work such as distribution power flow analysis, state estimation, Loop Closing Operation, reach the accurate assurance to electrical network characteristic.
Embodiment 2:
Fig. 2 is the harvester structured flowchart according to the optional another kind of power distribution network data of the embodiment of the present invention.
As shown in Figure 2, clock signal acquiring unit 1 comprises the first acquisition module 11, second acquisition module 12 and the 3rd acquisition module 13, wherein, the clock chip of compatible with GPS system is provided with for obtaining GPS clock signal in first acquisition module 11, be provided with the clock chip of compatible Beidou satellite system in second acquisition module 12 for obtaining big-dipper satellite clock signal, the 3rd acquisition module 13 is provided with the clock chip of IRIG-B clock signal in compatible main website server station for obtaining IRIG-B clock signal.The first FPGA control chip 14 and crystal oscillator 15 is also comprised in clock signal acquiring unit 1, wherein, first FPGA control chip 14 is for controlling the acquisition process of clock signal and time service, crystal oscillator 15 is for providing the clock reference signal source of high stability, preferably, crystal oscillator 15 adopts constant-temperature crystal oscillator.The clock accuracy that the clock signal acquiring unit 1 of the present embodiment obtains can reach for 20 nanoseconds, and this clock accuracy can meet the requirement gathered voltage or current phasor data completely.During specific works, obtain GPS clock signal by the first acquisition module 11 or obtain big-dipper satellite clock signal by the second acquisition module 12, or the clock signal of the IRIG-B of main website server is received by the 3rd acquisition module, other clock signal of nanosecond will be accurate to by serial ports and be sent to the first FPGA control chip 14, by Plush pulse signal, this clock signal is demarcated again, ensureing the definitely accurate of clock signal, is finally that the clock signal of serial data+pulse signal is sent to collecting unit 2 by output format.
Fig. 3 is according to the optional another kind of electric distribution network data collection apparatus structure block diagram of the embodiment of the present invention;
As shown in Figure 3, collecting unit 2 comprises phasor acquisition module 21 and digital module 22, and wherein, phasor acquisition module 21 for receive clock signal, and gathers voltage phasor data and/or the current phasor data of power distribution network according to clock signal; Digital module 22 for receive clock signal, and gathers power distribution network external switch position data and/or external switch action time data according to clock signal.
Particularly, phasor acquisition module 21 primary responsibility gathers high-accuracy voltage, current phasor data, and this voltage and current phasor data comprises first-harmonic phase angle, fundamental voltage amplitude, harmonic wave phase angle and amplitude.Phasor acquisition module 21 comprises and directly gathers voltage, the voltage of current phasor data, current transformer 2102, analog to digital converter 2104 and the second FPGA control chip 2106, analog to digital converter 2104 carries out analog to digital conversion and forms for the voltage of the analog form that voltage, current transformer 2102 gathered, current phasor data the digital signal can carrying out Storage and Processing, and the second FPGA control chip 2106 is responsible for the control work of analog to digital converter 2102.After the accurate clock of the transmission of any one module in the first acquisition module 11, second acquisition module 12 of the second FPGA control chip 2106 receive clock signal acquiring unit 1 or the 3rd acquisition module 13, trigger mode number converter 2104 after scaling down processing can be carried out, also direct-connected mode can be adopted to carry out rapid triggering analog to digital converter 2104, converted voltage, current phasor data are delivered to the second FPGA control chip 2106 by analog to digital converter 2104, again voltage, current phasor data are sent to control module 3 by the second FPGA control chip 2106.Use the differential signal input analog-to-digital converter 2104 of 16, this analog to digital converter 2104 can carry out synchronized sampling maintenance to 8 tunnel simulating signals, the time delays of whole process was less than for 50 nanoseconds, evade the introducing factor of analog to digital conversion time delay, data transmission delay, data computation delay equal error amount from hardware configuration, avoid the time delay problem of heterogeneous collection.
Digital module 22 is for detecting the action time data of the external switch of intelligent power distribution unit in power distribution network.The 3rd FPGA control chip 2202 is provided with in digital module 22,3rd FPGA control chip 2202 receives the high accurate clock signal from clock signal acquiring unit 1 equally, thus is demarcated accurately in the action moment of the external switch of intelligent power distribution unit; Particularly, digital-quantity input interface 2204 is connected the change in location for gathering external switch with the external switch of intelligent power distribution unit, digital output module 2206 is connected with external unit, external unit action is controlled for exporting control signal, accurate clock signal is received by the 3rd FPGA control chip 2202, when the external switch generation action of intelligent power distribution unit, the action moment of the external switch of intelligent power distribution unit is demarcated thus obtains the action time data of external switch.Digital module 22 has 4 railway digital amount input nodes, the moment of external switch action can be accurate to microsecond rank, can react the precedence of the action of each external switch truly, be convenient to the analysis of fault.
Phasor acquisition module 21 and digital module 22 quantity can carry out flexible configuration according to the concrete condition of power distribution network, be arranged on the diverse location of power distribution network, operational data for the corresponding equipment in power distribution network carries out synchronous acquisition to obtain data message on the same time cross-section of each collected equipment of power distribution network, thus ensures the computational accuracy of the work such as distribution power flow analysis, state estimation, Loop Closing Operation.
Fig. 4 is according to the optional another kind of electric distribution network data collection apparatus structure block diagram of the embodiment of the present invention; As shown in Figure 4, control module 3 comprises the 4th FPGA control chip 31 and ARM process chip the 32, four FPGA control chip 31 and carries out buffer memory for the electric power data of the described power distribution network gathered described collecting unit 2; ARM process chip 32 forwards for the electric power data of described power distribution network.
Control module 3 primary responsibility collects the action time data of the external switch of voltage, current phasor data and intelligent power distribution unit in collecting unit 2, and data message is further processed, the action time data of effective synchronizing voltage, current phasor data and external switch is forwarded simultaneously.
Control module 3 adopts ARM+FPGA framework, and arm processor is preferably FreescaleI.MX6Q Cortex-A9 tetra-core processor, dominant frequency 1GHz, 2G internal memory, carries Linux3.5 operating system.After collecting unit 2 image data is obtained data by MLVDS bus by the 4th FPGA control chip 31, advanced row cache, the half-full rear packing of pending data buffer area sends to ARM process chip 32.Communication mode between 4th FPGA control chip 31 and ARM process chip 32 adopts the mode of PCIE.In addition, ARM process chip 32 have the external interfaces such as liquid crystal interface, network interface, SD card, USB with outside realize communicating.
The harvester communication condition of the power distribution network data of the present embodiment is as follows: the action time data of the external switch of the high-accuracy voltage that collecting unit 2 collects, current phasor data and intelligent power distribution unit sends to control module 3.Control module 3 hardware configuration adopts 5 groups of MLVDS buses and clock signal acquiring unit 1 and collecting unit 2 to realize the communication mode of one-to-many, wherein, comprises the collection of 3 groups of high-speed communication bus for data, other 2 groups for obtaining clock signal.Adopt the communication sequential of high speed SPI, SPI communication clock speed is 20Mbps.Data volume=256*8*2*50=200Kbyte=1.6Mbit that each collecting unit 2 is per second.Calculate with maximum carry 8 collecting units 2, data=1.6*8=12.8Mbit per second, the communication speed of 20Mbps can meet transmission requirement as seen from the above.
Embodiment 3:
Fig. 5 is the acquisition method process flow diagram according to the optional a kind of power distribution network data of the embodiment of the present invention;
As shown in Figure 5, the acquisition method of power distribution network data that the embodiment of the present invention provides mainly comprises the steps that S102 is to step S106:
S102: obtain clock signal;
S104: the electric power data gathering power distribution network according to the clock signal triggering collection equipment obtained;
S106: the electric power data of the power distribution network of collection is carried out processing and/or forwarding.
The present embodiment obtains clock signal by clock signal acquiring unit 1; By the collecting unit 2 be connected with clock signal acquiring unit 1, for gathering the electric power data of power distribution network according to the clock signal obtained; And, by the control module 3 be connected with collecting unit 2, the electric power data of the power distribution network of collection is carried out processing and/or forwarding.The embodiment of the present invention is by obtaining clock signal accurately, the electric power data of clock signal triggering collection equipment to required power distribution network according to obtaining gathers, the data message of the same time cross-section of power distribution network can be obtained, thus the precision of result of calculation is improved when carrying out the work such as distribution power flow analysis, state estimation, Loop Closing Operation, reach the accurate assurance to electrical network characteristic.
In specific implementation process, the clock signal obtained comprises global position system GPS clock signal, between big-dipper satellite clock signal and target range in surveying instrument group IRIG-B clock signal one of at least, GPS clock signal has been come by the time service chip of special compatible with GPS system, big-dipper satellite clock signal has been come by the time service chip of special compatible Beidou satellite system, and IRIG-B clock signal is then from main website server.
The electric power data of power distribution network gathered comprise in the action time data of the voltage phasor data of power distribution network, current phasor data, external switch one of at least.The wherein phase-angle data of voltage phasor data, current phasor data mainly voltage and current amount.The action time data of external switch can reflect the action precedence of respective switch in power distribution network truly, is convenient to fault analysis.
Fig. 6 is the acquisition method process flow diagram according to the optional a kind of power distribution network data of the embodiment of the present invention;
As shown in Figure 6, in order to the voltage phasor data of the power distribution network of collection and current phasor data being carried out processing and forwarding, compared with the acquisition method of the power distribution network data shown in Fig. 5, after gathering the electric power data of described power distribution network according to clock signal triggering collection equipment, the acquisition method of the power distribution network data shown in Fig. 6 also comprises:
S105: convert the electric power data (electric power data comprises voltage phasor data and/or current phasor data) of the power distribution network gathered to digital signal by simulating signal, correspondingly, the electric power data of power distribution network is being processed and/or in repeating process, is being that the electric power data represented digital signal form processes and/or forwards in step S106.
After converting the electric power data of the power distribution network of collection to digital signal by simulating signal, directly can be carried out processing or forwarding by control module 3, solving the voltage phasor data of the analog form power distribution network directly gathered and/or current phasor data cannot carry out by treatment facility the problem that processes and/or forward.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (11)
1. a harvester for power distribution network data, is characterized in that, comprising:
Clock signal acquiring unit, for obtaining clock signal;
Collecting unit, is connected with described clock signal acquiring unit, for gathering the electric power data of described power distribution network according to described clock signal; And,
Control module, is connected with described collecting unit, for being carried out processing and/or forwarding by the electric power data of the described power distribution network gathered.
2. harvester according to claim 1, is characterized in that, described clock signal acquiring unit comprises:
First acquisition module, for obtaining global position system GPS clock signal;
Second acquisition module, for obtaining big-dipper satellite clock signal;
3rd acquisition module, for obtaining surveying instrument group IRIG-B clock signal between target range;
First FPGA control chip, be connected with described first acquisition module, the second acquisition module and the 3rd acquisition module respectively, obtain the process of described clock signal for controlling described first acquisition module, the second acquisition module and the 3rd acquisition module and the described clock signal obtained is demarcated.
3. harvester according to claim 2, is characterized in that, described clock signal acquiring unit also comprises:
Crystal oscillator, is connected with described primary scene programmable gate array FPGA control module, for providing reference clock signal source for described first FPGA control chip.
4. harvester according to claim 1, is characterized in that, described collecting unit comprises:
Phasor acquisition module, for receiving described clock signal, and gathers voltage phasor data and/or the current phasor data of described power distribution network according to described clock signal; And
Digital module, for receiving described clock signal, and gathers the action time data of the external switch of described power distribution network according to described clock signal.
5. harvester according to claim 4, is characterized in that, described phasor acquisition module comprises:
Voltage, current transformer, for gathering voltage phasor data and/or the current phasor data of described power distribution network;
Analog to digital converter, for converting the voltage phasor data of the described power distribution network gathered and/or current phasor data to digital signal by simulating signal;
Second FPGA control chip, is connected with described analog to digital converter, carries out analog to digital conversion for triggering described analog to digital converter according to described clock signal.
6. harvester according to claim 4, is characterized in that, described digital module comprises:
3rd FPGA control chip, for demarcating according to the action time data of described clock signal to described power distribution network external switch.
7. harvester according to claim 1, is characterized in that, described control module comprises:
4th FPGA control chip, the electric power data for the described power distribution network gathered described collecting unit carries out buffer memory;
ARM process chip, the electric power data for described power distribution network carries out processing and/or forwarding.
8. an acquisition method for power distribution network data, is characterized in that, comprising:
Obtain clock signal;
The electric power data of described power distribution network is gathered according to described clock signal triggering collection equipment; And,
The electric power data of the described power distribution network gathered is carried out processing and/or forwarding.
9. acquisition method according to claim 8, is characterized in that, described clock signal comprise following one of at least:
Global position system GPS clock signal, surveying instrument group IRIG-B clock signal between big-dipper satellite clock signal and target range.
10. acquisition method according to claim 8, is characterized in that, the electric power data of described power distribution network comprise following one of at least:
The action time data of the voltage phasor data of described power distribution network, current phasor data, external switch.
11. acquisition methods according to claim 8, is characterized in that, described gather the electric power data of described power distribution network according to described clock signal triggering collection equipment after, also comprise:
The voltage phasor data of the described power distribution network gathered and/or current phasor data is converted to digital signal by simulating signal,
Wherein, the electric power data of the described power distribution network gathered is carried out processing and/or forwarding comprising: the described voltage phasor data of digital signal form and/or described current phasor data are carried out processing and/or forwarding.
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Application publication date: 20150819 |