CN102710357A - Smart power grid distribution type measurement and control synchronizing method - Google Patents
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Abstract
The invention discloses a smart power grid distribution type measurement and control synchronizing method. A test terminal with Ethernet networking and a GPS (Global Positioning System) synchronous sequence interface forms a hardware platform together with a server by a known rapid Ethernet exchanger, and the synchronous measurement and control of a distribution type power grid can be realized under the control of a synchronous acquisition and management program, wherein 128 terminals form a distribution type test system and are respectively connected at different parts of transformer substations or factories to complete the local data acquisition, control and processing, and meanwhile, each terminal is managed by a Workstation through a network so as to realize the synchronous control of the local test terminal and other terminals and the data processing by cooperation with the other terminals. According to the smart power grid distribution type measurement and control synchronizing method, the synchronous test between the remote test terminals of the power grid is realized, and the demands on the safety monitoring, grid-tied control and proper scheduling of each station by the distribution type power grid can be met.
Description
Technical field
The present invention relates to the distributed testing instrument field, particularly the GPS remote synchronization method of distributed measurement and control instrument in the intelligent grid.
Background technology
Intelligent grid is a distributed power grid; Need to solve generating electricity by way of merging two or more grid systems of the various energy that are distributed in the different location; It will propose more requirements with control to whole power grid security test, and wherein the synchronous monitoring between the generating-power transformation-power distribution station of different location is exactly one of problem that must solve with control.The remote synchronization technology is use radio signal early, along with after the GPS simultaneous techniques occurs, brings into use 1 millisecond of time sequential pulse that GPS provides as synchronizing signal, solves synchronous between 2 or the several website.Existing method is difficult to solve intelligent grid to problems such as data synchronous acquisition, processing, storages, and a kind of synchronous and data managing method with Network Management Function need be provided.
Summary of the invention
The objective of the invention is: provide a kind of intelligent grid distributed observing and controlling method for synchronous, set up the distributed testing instrument, realize synchronous acquisition and control; Assurance is scattered in the test terminal of different location can be strictly synchronous, and be datum mark with the GPS synchronous sequence, adopts the synchronization mechanism of similar ticketing reservation; In Fast Ethernet, sell to each terminal of test network and comprise reservation synchronization frame constantly, after receive at each terminal, with the mode of round-robin by the main website coordinated management; In the timeslice of its address size mapping, send the affirmation acknowledgement frame to main website, main website just makes marks in respective field after receiving the acknowledgement frame at terminal; Accurately know the end message of collaborative work; Main website can make system works in various modes by configurating terminal simultaneously, both can specify the overall network terminal, also can select specific terminal.
The scheme that technical solution problem of the present invention is taked is: the test terminal with Ethernet networking and GPS synchronous sequence interface; Constitute hardware platform through known fast ethernet switch and server, under the control of synchronous acquisition hypervisor, realize the synchronism detection and the control of distributed power grid; Wherein, constitute distributed test system with 128 station terminals, 1-128 test terminal is connected to the test lead position of each transformer station or factory's transformer respectively, accomplishes local data acquisition, control and processing; The management of work station Workstation is accepted at each terminal again through network simultaneously, realizes the Synchronization Control at local test terminal and other terminal and the data processing at collaborative all the other terminals; Wherein, the data acquisition clock of test terminal is that 1 millisecond of clock of 27MHz and GPS is set up 1000 frequencys multiplication counting synchronously through 27 times of frequency divisions and phase-locked loop pll processing, is set at 5 milliseconds synchronizing cycle; Wherein, The program that the processor NIOS operation that makes up among the FPGA of main website is provided with in advance; Preengage communicating by letter of collection and processing through Ethernet and each terminal, this machine is controlled at each terminal after receiving synch command program begins to carry out collection, processing, storage and transformation task at the time point of reservation; It is characterized in that
This method for synchronous may further comprise the steps:
Step 1, main website presell synchronization frame:The program of depositing in advance in the master station computer is accepted user configured plan participation network required number of terminals, acquisition parameter and deal with data instruction through interactive interface; Program obtains presynchronization time point PreT according to preset the whole network sync period and current moment addition, generates the Ethernet UDP frame { Ticket:Syn, the PreT that comprise PreT; InBit }; Wherein Syn represents the synchronization frame type, and InBit is reservation terminal feature word, totally 128; Every is 0 or 1 to represent a terminal-joined or do not participate in collaborative the collection, and binding and layout are accomplished back broadcasting immediately after receiving the GPS lock-out pulse and being sent to that each is whole;
The reception at step 2, terminal is with synchronously:Main program among the process processor NIOS at terminal is in the state of intercepting always, after receiving synchronization frame { Ticket:SA, Syn, PreT, InBit }, this machine presynchronization sampled point is set, and makes this terminal entering synchronous regime and carries out synchronous acquisition at this point;
Select a good opportunity and beam back acknowledgement frame in step 3, terminal:It is round-robin that program among the NIOS is beamed back the mechanism of replying, and the terminal one and the corresponding timeslice in own IP address is all arranged in presynchronization in the phase, replys and take turns to the timeslice of oneself when needs; Then send acknowledge synchronization frame { Ticket:SA, DA, Syn; PreT, InBit }, each of tagged word InBit shows whether respective site is synchronous; When corresponding positions is 1 to show synchronous success, promptly this terminal can be participated in; When corresponding positions is 0, show synchronously to get nowhere, possibly be this terminating circuit fault;
Ticket and count of votes are received by step 4, main website:The main website program has two kinds of results at the acknowledge synchronization frame of receiving that the terminal is beamed back after statistics, a kind of is all to get into the normal synchronized state, can carry out the collection of data; Another kind then is that part is participated in, and this will get into corresponding processing procedure according to prepattern, adds up through program; If adopt more than half ballot systems; Then only need statistics to participate in the terminal numeral and whether reach the half the of sum, reach and promptly gather and handle, do not reach then and need preengage again;
Step 5, main website repeat reservation:Main website needs reservation again again when can not receive replying that the terminal beams back, get into step 1, when after 16 times are preengage, still not reaching qualified poll at most, then to the user report mistake.
Beneficial effect of the present invention: realize the synchronism detection between the electrical network remote testing terminal, guarantee the needs of distributed power grid the safety monitoring of each website, the control of being incorporated into the power networks, in good time height.
Description of drawings
The distributed measurement and control network system schematic of Fig. 1 intelligent grid.
Fig. 2 has Ethernet and GPS sequential synchronism detection terminal block diagram.
Fig. 3 distributed synchronization control flow chart.
Embodiment
Below in conjunction with accompanying drawing and embodiment technical solution of the present invention is described further, can not be interpreted as it is restriction technical scheme.
As shown in Figure 1; Be positioned at the on-the-spot test terminal RTM-1 of electric power and tested object carried out the collection of three-phase voltage U a-Uc, three-phase current Ia-Ic, carry out local data by DSP and handle, be transferred to central server Server through Ethernet then to RTM-n; Server combines corresponding monitoring model to handle through preset program; Send instruction and to user User Web service is provided to each terminal, keeper Asmin manages whole network, is responsible for the control of monitoring mode.
As shown in Figure 2, be to have a synchronous remote monitoring terminal of GPS, by
Number-Mo converting unitChip AD7606 accomplishes three-phase and the voltage of central point, the collection of electric current, its gather sequential with
The GPS receiving elementThe sequential Clk_1ms that provides by
Control unitThe middle mutually bad PLL2 of lock that is provided with carries out synchronously, can in a power cycle, accomplish in order to guarantee to gather, and the mutually bad PLL1 of lock also is set, and is synchronous with regard to making that receive Clk_1ms the zero hour of gathering like this, and frequency acquisition is 512 times of supply frequency; The terminal is managed by NIOS and two processors of DSP, and wherein DSP accomplishes conversion FFT sophisticated signal processing in quick Fu, and NIOS is the processor that is embedded among the FPGA; Completion is controlled and data communication; In NIOS, loaded μ Cos operating system, customized ICP/IP protocol, μ Cos passes through
The Ethernet interface unitOther terminal communication on chip LAN91C111 and the network.
As shown in Figure 3, be remote synchronization process control flow chart; After initialization was accomplished at main website and terminal, the program in the main website server was responsible for communication process management, data communication, when the main website program need be worked in coordination with each terminal when carrying out network monitor; Main website is to each slave station broadcasting reservation synchronization frame, through presell synchronous UDP frame { Ticket:Syn, PreT; InBit }, wherein Syn is the synchronization frame type, PreT is the presynchronization time point; Be that current time adds time synchronizing cycle; InBit is reservation terminal feature word, when the user participates in network processes collection and data through the required terminal of interface configurations, and totally 128; Every is 0 or 1 to represent a terminal-joined or do not participate in collaborative the collection, and binding and layout are accomplished back broadcasting immediately after receiving the GPS lock-out pulse and being sent to that each is whole; Terminal processes is in the state of intercepting always, after receiving synchronization frame { Ticket:SA, Syn, PreT, InBit }, this machine presynchronization sampled point is set, and makes this terminal carry out synchronous acquisition at this point; Acknowledgement frame is beamed back in the terminal in it takes turns the timeslice of commentaries on classics, conversion sequence be this machine address/IP address mutually from high to low, the timeslice that each IP is corresponding; Reply and take turns to oneself timeslice when needs, then send acknowledge synchronization frame { Ticket:SA, DA; Syn, PreT, InBit }; This moment InBit each show whether respective site synchronous, when corresponding positions is 1 to show synchronous success, promptly this terminal can be participated in; When corresponding positions is 0 to show synchronously unsuccessfully, possibly be this terminating circuit fault; The main website program is at the acknowledge synchronization frame of receiving that the terminal is beamed back, and the poll that statistics is received according to the result, makes whether needing decision-making synchronously again, reaches preset synchronous acquisition always and requires or provide report; For preventing that main website from can not receive replying that the terminal beams back deadlock takes place,
Main website adopts limited repetition booking-mechanism,When after 16 reservations, still not reaching qualified poll at most, then notify the user, and produce error reporting; The purpose of setting overtime timing be prevent to transmit middle intermittent line or the terminal deadlock etc. of data when unusual program can get back to initial condition.
Claims (1)
1. the distributed observing and controlling method for synchronous of intelligent grid; Test terminal with Ethernet networking and GPS synchronous sequence interface; Constitute hardware platform through known fast ethernet switch and server, under the control of synchronous acquisition hypervisor, realize the synchronism detection and the control of distributed power grid; Wherein, constitute distributed test system with 128 station terminals, 1-128 test terminal is connected to the test lead position of each transformer station or factory's transformer respectively, accomplishes local data acquisition, control and processing; The management of work station Workstation is accepted at each terminal again through network simultaneously, realizes the Synchronization Control at local test terminal and other terminal and the data processing at collaborative all the other terminals; Wherein, the data acquisition clock of test terminal is that 1 millisecond of clock of 27MHz and GPS is set up 1000 frequencys multiplication counting synchronously through 27 times of frequency divisions and phase-locked loop pll processing, is set at 5 milliseconds synchronizing cycle; Wherein, The program that the processor NIOS operation that makes up among the FPGA of main website is provided with in advance; Preengage communicating by letter of collection and processing through Ethernet and each terminal, this machine is controlled at each terminal after receiving synch command program begins to carry out collection, processing, storage and transformation task at the time point of reservation; It is characterized in that
This method for synchronous may further comprise the steps:
Step 1, main website presell synchronization frame:The program of depositing in advance in the master station computer is accepted user configured plan participation network required number of terminals, acquisition parameter and deal with data instruction through interactive interface; Program obtains presynchronization time point PreT according to preset the whole network sync period and current moment addition, generates the Ethernet UDP frame { Ticket:Syn, the PreT that comprise PreT; InBit }; Wherein Syn represents the synchronization frame type, and InBit is reservation terminal feature word, totally 128; Every is 0 or 1 to represent a terminal-joined or do not participate in collaborative the collection, and binding and layout are accomplished back broadcasting immediately after receiving the GPS lock-out pulse and being sent to that each is whole;
The reception at step 2, terminal is with synchronously:Main program among the process processor NIOS at terminal is in the state of intercepting always, after receiving synchronization frame { Ticket:SA, Syn, PreT, InBit }, this machine presynchronization sampled point is set, and makes this terminal entering synchronous regime and carries out synchronous acquisition at this point;
Select a good opportunity and beam back acknowledgement frame in step 3, terminal:It is round-robin that program among the NIOS is beamed back the mechanism of replying, and the terminal one and the corresponding timeslice in own IP address is all arranged in presynchronization in the phase, replys and take turns to the timeslice of oneself when needs; Then send acknowledge synchronization frame { Ticket:SA, DA, Syn; PreT, InBit }, each of tagged word InBit shows whether respective site is synchronous; When corresponding positions is 1 to show synchronous success, promptly this terminal can be participated in; When corresponding positions is 0, show synchronously to get nowhere, possibly be this terminating circuit fault;
Ticket and count of votes are received by step 4, main website:The main website program has two kinds of results at the acknowledge synchronization frame of receiving that the terminal is beamed back after statistics, a kind of is all to get into the normal synchronized state, can carry out the collection of data; Another kind then is that part is participated in, and this will get into corresponding processing procedure according to prepattern, adds up through program; If adopt more than half ballot systems; Then only need statistics to participate in the terminal numeral and whether reach the half the of sum, reach and promptly gather and handle, do not reach then and need preengage again;
Step 5, main website repeat reservation:Main website needs reservation again again when can not receive replying that the terminal beams back, get into step 1, when after 16 times are preengage, still not reaching qualified poll at most, then to the user report mistake.
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Cited By (5)
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| CN103326802A (en) * | 2013-05-31 | 2013-09-25 | 燕山大学 | Wireless network system for achieving synchronous acquisition, synchronous acquisition device and method |
| CN105425662A (en) * | 2015-11-06 | 2016-03-23 | 北京广利核系统工程有限公司 | Main processor in DCS (distributed control system) based on FPGA, and control method of main processor |
| CN105515706A (en) * | 2015-10-13 | 2016-04-20 | 福州开发区慧聚通信技术有限公司 | Method and system for employing pulse mapping domain for achieving synchronization |
| CN105577839A (en) * | 2016-02-29 | 2016-05-11 | 武汉大学 | Distributed data collection system and method of three-dimensional partial quadrat network |
| CN108089468A (en) * | 2018-01-11 | 2018-05-29 | 尚健静 | A kind of medical examination equipment control sequential visualized generation method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105577839A (en) * | 2016-02-29 | 2016-05-11 | 武汉大学 | Distributed data collection system and method of three-dimensional partial quadrat network |
| CN105577839B (en) * | 2016-02-29 | 2018-10-26 | 武汉大学 | A kind of distributed data acquisition system and method for three-dimensional local sample prescription networking |
| CN108089468A (en) * | 2018-01-11 | 2018-05-29 | 尚健静 | A kind of medical examination equipment control sequential visualized generation method |
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