CN103457352A - BCD gear information collection method for intelligent substation - Google Patents
BCD gear information collection method for intelligent substation Download PDFInfo
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- CN103457352A CN103457352A CN2013103447050A CN201310344705A CN103457352A CN 103457352 A CN103457352 A CN 103457352A CN 2013103447050 A CN2013103447050 A CN 2013103447050A CN 201310344705 A CN201310344705 A CN 201310344705A CN 103457352 A CN103457352 A CN 103457352A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/16—Electric power substations
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/40—Display of information, e.g. of data or controls
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Abstract
The invention relates to a BCD gear information collection method for an intelligent substation. The method comprises the steps that idle contact signals participating in the composition of BCD are collected in real time at first; if the state of more than one idle contact signal changes within the set time T, the starting moment of the T is updated, the state changing moment of the last idle contact signal with the state changed is taken as the corresponding starting deflection moment t of the BCD value, the starting deflection moment t of the BCD value is taken as the shake disappearing moment to delay one shake disappearing time Tx, the states of the idle contact signals are confirmed after the shake disappearing time Tx is over, and then the BCD value is determined. According to the BCD gear information collection method for the intelligent substation, the BCD gear information is sent once through a GOOSE message only after the states of all the idle contact signals are stable, unnecessary network message transmission is avoided, and the burden of an upper-layer device is effectively reduced.
Description
Technical field
The present invention relates to binary-coded decimal gear information harvester and acquisition method for a kind of intelligent substation.
Background technology
In service in electric power system, circuit breaker closed or cut-off, the working condition of location status, relaying protection and the automatics of isolating switch all means with these two kinds of remote signalling states of closed and disconnected.Press the IEC of International Electrotechnical Commission standard: mean off-state with " 0 ", with " 1 ", mean closure state.In the primary equipment side, this remote signalling state offers secondary device with the form of dumb contact usually, and in order to prevent that the reasons such as poor contact of contacts from causing mistake, all be added with direct current 220V or 110V voltage in the loop, contact, and when the access secondary device, introduce photoelectric isolating device, to avoid heavy current surge in transformer station, secondary device is caused damage.And in transformer, the mode that often with a plurality of dumb contacts, is combined into binary-coded decimal again provides corresponding gear information, as common, take six dumb contacts as one group, and wherein two dumb contacts mean ten, remaining four mean a position, nearly 39 field information so just can be provided.For dumb contact open into signal, because of its input or while disconnecting, mechanical shaking is in short-term all arranged, usually all require that it is carried out to necessary disappearing and tremble processing (representative value is 10ms), in case the adverse effect that the shake of stop signal causes normal power supply.
In addition, in current intelligent substation, the general GOOSE message that just adopts of process layer device will be delivered to Ethernet on the primary equipment state information collected, thereby is transferred to bed device (referring in this application wall and station level device, as follows).As shown in Figure 1, press the IEC61850 standard, the GOOSE message is when state-event is stablized, repeat to send by the longer time interval, when state-event changes, will enter bursty state, within the shorter time interval, send continuously multiframe, and then the send mode while getting back to stable state.
In light of this situation, for the binary-coded decimal gear information combined by a plurality of dumb contacts, in process layer device, usually have following two kinds of methods to be processed its gear information:
Method one: the distant place of binary-coded decimal gear information is synthetic.Specific as follows: that each dumb contact is looked to the independently remote signalling state of doing, when it changes, after certain disappearing time of trembling is confirmed, the BOOL type that it is encoded into to the GOOSE message by off state is sent, the closure state of corresponding dumb contact when wherein value is " Ture ", the off-state of corresponding dumb contact when value is " False ".Concrete gear information, decoded to the GOOSE message of receiving by upper bed device, and extract the remote signalling state of each dumb contact, by corresponding weights, generates the binary-coded decimal gear information.
Method two: binary-coded decimal gear information synthetic on the spot.Specific as follows: as arbitrary dumb contact state to be detected by process layer device and change, after trembling confirmation through disappearing, i.e. synthetic new binary-coded decimal gear, then be encoded into shaping or the short shaping data in the GOOSE message, and the burst that the state during according to event change carries out message transmits.
In method one, the synthetic work of binary-coded decimal gear information is transferred to upper bed device to be responsible for, this will increase the cpu load of upper bed device to a certain extent, and a plurality of dumb contact in a gear information is in the short time during asynchronous displacement, for mechanical contact, while closing, generally can differ several ms simultaneously.As Fig. 2, dumb contact " BCD-0-1 " and " BCD-1-2 " are respectively at t
1and t
2constantly displacement occurs, after the time of trembling that disappears, respectively at t
3and t
4its variable condition is confirmed constantly.According to GOOSE message transmit mechanism, this will cause process layer device at t
3and t
4constantly all can activate the bursty state of GOOSE message, for the binary-coded decimal gear formed by six dumb contacts, will be within the time of trembling that disappears when the most serious, produce six GOOSE message bursts, network traffics have not only been increased, and make bed device when extracting the binary-coded decimal gear information, (t within the shorter time interval
2-t
1, be less than the time of trembling that disappears), extract different gear information, thereby must carry out certain delay confirmation mechanism, otherwise may cause the continuous switching of protection strategy, this has just increased the complexity of upper bed device; In method two, although need to not synthesize at upper bed device place the binary-coded decimal gear information, when phenomenon occurring as shown in Figure 2, can cause equally bed device to receive at short notice different gear information.Therefore, these two kinds of methods have all increased unnecessary network traffics and the burden of upper bed device, are necessary to make improvements.
Summary of the invention
The purpose of this invention is to provide binary-coded decimal gear information acquisition method for a kind of intelligent substation, in order to solve message that existing binary-coded decimal gear information acquisition method causes send on frequent with network in the unsettled problem of gear information.
For achieving the above object, the invention provides binary-coded decimal gear information acquisition method for a kind of intelligent substation, step is as follows:
(1) Real-time Collection participates in each dumb contact signal that binary-coded decimal forms;
(2) in the time T of setting, when the state that an above dumb contact signal is arranged changes, upgrade the initial time of T, the state variation of the dumb contact signal that last state changes of take is the beginning displacement of corresponding binary-coded decimal value t constantly constantly;
(3) with the beginning displacement of described binary-coded decimal value constantly t tremble for disappearing and postpone one the zero hour and disappear and tremble time T x, and disappear tremble time T x and finish after described each dumb contact signal condition of confirmation, to determine the binary-coded decimal value.
After determining described binary-coded decimal value, the binary-coded decimal gear information is sent by the GOOSE message.
In step (1), with described each dumb contact signal of mode Real-time Collection of scanning, and all record current binary-coded decimal value, scan period T while gathering at every turn
s<T.
In step (2), in time T, whether the binary-coded decimal value by more adjacent twice collection changes, and has judged whether dumb contact generation displacement, and each displacement occurs, and described beginning displacement t constantly resets.
Setting-up time T in step (2) is a time slip-window, and the initial time that its initial time changes with each dumb contact signal condition upgrades.
In operating system, a query task and the task of trembling that disappears are set, arranging one in the task of trembling that disappears disappears and trembles queue and one and wait to disappear and tremble queue, operating system is inquired about the once state of each dumb contact signal every a polling cycle, and according to last polling cycle the hollow contact signal state judge whether the state of this time inquiring about the space-time contact signal changes, and judge whether to upgrade the binary-coded decimal value while this time inquiring about with this, until all dumb contact signal conditions are while all no longer changing, the binary-coded decimal value of upgrading when this is inquired about is sent into to wait to disappear and is trembled queue and prepare to disappear to tremble, and disappearing while trembling that task time, sheet arrived, corresponding binary-coded decimal value is sent into to disappear to tremble queue and start displacement according to it and constantly it is disappeared and trembles, in the process of trembling that disappears, if the dither signal of being found to be, exiting disappears trembles, otherwise, after disappearing and trembling end, excite the GOOSE message, send corresponding binary-coded decimal gear information.
The beneficial effect that the present invention reaches: the present invention is in the gatherer process of binary-coded decimal gear information, when CPU inquires t
1while constantly being the state of free contact signal to change, just upgrade the binary-coded decimal value, this binary-coded decimal signal is sent into waits to disappear simultaneously trembles queue and prepares to disappear to tremble, and works as t
2when being carved with dumb contact signal condition that another one forms binary-coded decimal when (being less than disappears trembles time T x) and changing, again upgrade the binary-coded decimal value, and by t
2constantly as new disappearing, tremble the time started, while all changing within a plurality of dumb contact signal short time that form it like this, can take this group changes that in contact, last enters the beginning displacement time that the displacement time of origin of stable state is this gear value, and then synthetic on the spot to its binary-coded decimal value by harvester, and activate corresponding GOOSE message group and enter bursty state, avoid unnecessary network message transmission and effectively alleviated the burden of upper bed device.
The accompanying drawing explanation
Fig. 1 is GOOSE message event transmission mechanism;
Fig. 2 is that the dumb contact signal is opened into the process of trembling that disappears;
Fig. 3 is a harvester structure chart of application the inventive method;
Fig. 4 is definite process of binary-coded decimal value in the present invention polling cycle;
Fig. 5 is CPU enquiry module workflow diagram of the present invention;
Fig. 6 is that CPU of the present invention disappears and trembles the module workflow diagram.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described in detail.
As Fig. 3, it is a device of application acquisition method of the present invention, comprise CPU, fpga chip and network chip, each input port of FPGA is connected respectively a dumb contact, for gathering each dumb contact state, also be provided with optocoupler between the input port of each dumb contact and fpga chip, BCD-1-2 and BCD-1-1 are ten of binary-coded decimal, BCD-0-1, BCD-0-2, the position that BCD-0-4 and BCD-0-8 are binary-coded decimal, the weights of each dumb contact state representative are as shown in table 1, for example, the dumb contact that BCD-0-1 is corresponding represents a position of binary-coded decimal, its weights are 1, that is: 000001, the dumb contact that BCD-1-2 is corresponding represents ten of binary-coded decimal, its weights are 20, that is: 100000.
Table 1
| Dumb contact | Weights |
| BCD-0-1 | 1 |
| BCD-0-2 | 2 |
| BCD-0-4 | 4 |
| BCD-0-8 | 8 |
| BCD-1-1 | 10 |
| BCD-1-2 | 20 |
Input signal is not more than to the requirement into resolution of opening of 1ms for meeting device, by FPGA, input signal is carried out to Real-time Collection, and deposit corresponding register in.The input signal that this device gathers comprises common input signal; that is: do not participate in forming the dumb contact signal of binary-coded decimal, such as disconnecting link divides position, disconnecting link co-bit etc.; it only offers the protection and measurement and control device with independent " 0 ", one state, also comprises the binary-coded decimal signal be comprised of the dumb contact state.
The concrete steps of the inventive method are as follows:
(1) Real-time Collection participates in each dumb contact signal that binary-coded decimal forms;
(2) in the time T of setting, when the state that an above dumb contact signal is arranged changes, upgrade the initial time of T, the state variation of the dumb contact signal that last state changes of take is the beginning displacement of corresponding binary-coded decimal value t constantly constantly;
(3) with the beginning displacement of described binary-coded decimal value constantly t tremble for disappearing and postpone one the zero hour and disappear and tremble time T x, and disappear tremble time T x and finish after described each dumb contact signal condition of confirmation, to determine the binary-coded decimal value.
As shown in Figure 4, the state variation that t1, t3, t5, t7, t9, t11 are each dumb contact constantly, last dumb contact BCD-1-2 changes the beginning displacement moment that moment t11 is only corresponding binary-coded decimal value, take t11 as the zero hour after the time of trembling that disappears, constantly just determine the binary-coded decimal value of current time at t12.
In the present embodiment, CPU is provided with an enquiry module, every 0.25ms, by bus, reads the register of a FPGA, thereby obtains the current state of each dumb contact.In CPU, for all input signals, setting up a slip condition database manages, wherein, for common input signal, each all corresponding dumb contact signal in database, and state and the state variation time that can record this dumb contact, during initialization, be 0, record be the state that cut-offs of dumb contact; For the binary-coded decimal signal, a plurality of dumb contact signals that form binary-coded decimal are in correspondence database, what its corresponding database items recorded is concrete binary-coded decimal value, the information that database items corresponding to this binary-coded decimal value database items corresponding with common input signal reflects except state value is different, its complementary characteristic all is consistent, therefore, can be regarded as a virtual dumb contact opens into item.
Also being provided with one in CPU disappears and trembles module in order to realize the task of trembling that disappears of ms level, CPU calls once to disappear every 1ms and trembles module, and trembled processing in order effectively to disappear, disappear to tremble in module that also being provided with waits to disappear and tremble queue and disappear and tremble queue, wherein, wait to disappear and tremble the status input signal change information that queue detects for storing the CPU enquiry module, as the dumb contact numbering, the state variation time, changing value etc., disappear and tremble queue and be in the input signal information of the state of trembling that disappears for storage, as the dumb contact numbering, disappear and tremble the time started, the state value that the time of trembling and the input of need disappearing disappears while trembling etc.
Therefore, the present invention by enquiry module in CPU and the cooperation of trembling module of disappearing complete concrete binary-coded decimal gear value collection, synthesize, disappear and tremble the activation of confirmation, database update and GOOSE bursty state, realize alleviating the purpose of network traffics and upper bed device burden.
As Fig. 5, in enquiry module, for common input signal, when CPU inquires that the current time, the state while having signal condition and last time to inquire about was inconsistent, soon the state value of this signal and this query time are sent into to wait to disappear and are trembled queue, while waiting for the timeslice arrival of the task of trembling that disappears, then are processed, for the binary-coded decimal gear information, when inconsistent when finding the dumb contact current state that this gear comprises and inquiring about last time, directly it not being sent into waits to disappear trembles queue, but the binary-coded decimal value while at first inquiring about according to last time is upgraded current binary-coded decimal value, state Deng all dumb contacts in this inquiry is all confirmed complete, also just generated the binary-coded decimal value of current time, and then the binary-coded decimal value generated when inquiring about itself and last time compares, as inconsistent as both, just using its code value as state value, together with this query time, sending into waits to disappear trembles queue, wait disappears and trembles processing.
As Fig. 6, in disappearing and trembling module, at first treating disappears trembles queue and is traveled through, wait to disappear for wherein each and tremble signal, all need remove from waiting to disappear to tremble queue, and then judge whether it has trembled state in disappearing, whether this can be judged disappearing in trembling queue by inquiring about it, as in disappearing and trembling queue, illustrate that the current time signal is in dither state, need further to judge that whether common input signal or binary-coded decimal signal be consistent with the state value of respective items in database, the wherein dumb contact comparison for opening, disconnected state value, binary-coded decimal shelves signal compares its binary-coded decimal value, if consistent, illustrate that effective change does not occur signal condition, exiting disappears trembles, if inconsistent, need tremble the time started for disappearing with the up-to-date state variation time again disappears and trembles, at this moment only needing to upgrade it trembles the time started the disappearing in trembling queue that disappear and gets final product.If not in disappearing and trembling queue, it is cleared out of after trembling queue clearly, directly as new disappearing, tremble to send into to disappear and tremble in queue, in order to start the process of trembling that disappears.
Once treating disappears, to tremble the traversal of queue complete, just starts that entering disappears and tremble the ergodic process of queue.Wherein each is disappeared and trembles signal, need to and disappear according to the current time in system and tremble the difference of time started, confirm whether it has completed to disappear to tremble, if complete, it is trembled queue and remove from disappearing, and more state variation time and the state value of respective items in new database, simultaneously, activate the GOOSE event change sign of respective items, send the state of input signal, for the binary-coded decimal signal, send the binary-coded decimal value on directly, for common input signal, give its " 0 ", one state value on.Wherein, the state variation time should be to disappear and trembles the time started, rather than disappear and tremble the current time of end, thereby guarantee in the GOOSE message sent subsequently, temporal information can truly reflect this project state variation time of corresponding dumb contact, meet system to single requirement of firmly opening into 1ms resolution.As not yet completed, wait for when call next time and disappear and tremble processing procedure more than continuation.
By above processing, if situation shown in Fig. 2 appears, for example: at t
1constantly, dumb contact " BCD-0-1 " drops into, binary-coded decimal gear value is updated to 1(all the other everybody and is assumed to off-state, binary-coded decimal gear value initialization is 0), therefore, will detect binary-coded decimal gear value and change, the virtual dumb contact item of its correspondence is sent into to wait to disappear and tremble queue, while trembling the module operation when disappearing, it is taken out from waiting to disappear to tremble queue, with t
1trembling the time started for disappearing starts the process of trembling that disappears; At t
2constantly, dumb contact " BCD-1-2 " drops into, and binary-coded decimal gear value is updated to 21, and therefore, this virtual dumb contact item is sent into waits to disappear again trembles queue, when system offsets while trembling module schedules again, finds that it in disappearing and trembling queue, disappears it to tremble the time started by t
1be updated to t
2restart to disappear and tremble, this has just guaranteed that system is only when disappearing of dumb contact " BCD-1-2 " trembled acknowledging time and finished, i.e. t
4constantly, produce database update one time, and activate GOOSE message bursty state one time, in message, the displacement time is set to t
2thereby, make the message in network relatively stable, without upper bed device, concrete gear information is carried out to delay confirmation simultaneously, alleviated the burden of upper bed device, make it without the delay confirmation that carries out gear information.If dumb contact " BCD-1-2 " is only a shake at t2 constantly, it is at t
4a certain moment t before
5get back to again original position, with t
5constantly for disappearing, tremble the zero hour, to " t
5+ disappear the time of trembling " after again by t
1code value in the time of constantly sends, thereby is equivalent to, on process layer device, gear information has been done to delay confirmation.
Claims (6)
1. a binary-coded decimal gear information acquisition method for intelligent substation, is characterized in that, step is as follows:
(1) Real-time Collection participates in each dumb contact signal that binary-coded decimal forms;
(2) in the time T of setting, when the state that an above dumb contact signal is arranged changes, upgrade the initial time of T, the state variation of the dumb contact signal that last state changes of take is the beginning displacement of corresponding binary-coded decimal value t constantly constantly;
(3) with the beginning displacement of described binary-coded decimal value constantly t tremble for disappearing and postpone one the zero hour and disappear and tremble time T x, and disappear tremble time T x and finish after described each dumb contact signal condition of confirmation, to determine the binary-coded decimal value.
2. binary-coded decimal gear information acquisition method for intelligent substation according to claim 1, is characterized in that, after determining described binary-coded decimal value, the binary-coded decimal gear information sent by the GOOSE message.
3. binary-coded decimal gear information acquisition method for intelligent substation according to claim 1, it is characterized in that, in step (1), with described each dumb contact signal of mode Real-time Collection of scanning, and all record current binary-coded decimal value while gathering, scan period TS<T at every turn.
4. binary-coded decimal gear information acquisition method for intelligent substation according to claim 1, it is characterized in that, in step (2), in time T, whether the binary-coded decimal value by more adjacent twice collection changes, judged whether dumb contact generation displacement, each displacement occurs, and described beginning displacement t constantly resets.
5. binary-coded decimal gear information acquisition method for intelligent substation according to claim 1, is characterized in that, the setting-up time T in step (2) is a time slip-window, and the initial time that its initial time changes with each dumb contact signal condition upgrades.
6. binary-coded decimal gear information acquisition method for intelligent substation according to claim 1, it is characterized in that, in operating system, a query task and the task of trembling that disappears are set, arranging one in the task of trembling that disappears disappears and trembles queue and one and wait to disappear and tremble queue, operating system is inquired about the once state of each dumb contact signal every a polling cycle, and according to last polling cycle the hollow contact signal state judge whether the state of this time inquiring about the space-time contact signal changes, and judge whether to upgrade the binary-coded decimal value while this time inquiring about with this, until all dumb contact signal conditions are while all no longer changing, the binary-coded decimal value of upgrading when this is inquired about is sent into to wait to disappear and is trembled queue and prepare to disappear to tremble, and disappearing while trembling that task time, sheet arrived, corresponding binary-coded decimal value is sent into to disappear to tremble queue and start displacement according to it and constantly it is disappeared and trembles, in the process of trembling that disappears, if the dither signal of being found to be, exiting disappears trembles, otherwise, after disappearing and trembling end, excite the GOOSE message, send corresponding binary-coded decimal gear information.
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| CN107547303A (en) * | 2017-07-06 | 2018-01-05 | 中国南方电网有限责任公司 | The method for supporting the IED equipment processing NodesTable of PRP or HSR agreements |
| CN109471750A (en) * | 2018-11-07 | 2019-03-15 | 紫光测控有限公司 | A kind of SOE disappears fluttering method and the system of trembling that disappears |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105743056A (en) * | 2016-04-05 | 2016-07-06 | 华自科技股份有限公司 | Protection constant value switching method, device and system of relay protection device |
| CN107547303A (en) * | 2017-07-06 | 2018-01-05 | 中国南方电网有限责任公司 | The method for supporting the IED equipment processing NodesTable of PRP or HSR agreements |
| CN107547303B (en) * | 2017-07-06 | 2021-07-09 | 中国南方电网有限责任公司 | Method for processing NodesTable by IED equipment supporting PRP or HSR protocol |
| CN109471750A (en) * | 2018-11-07 | 2019-03-15 | 紫光测控有限公司 | A kind of SOE disappears fluttering method and the system of trembling that disappears |
| CN109471750B (en) * | 2018-11-07 | 2022-03-22 | 清能华控科技有限公司 | SOE jitter elimination method and system |
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| CN103457352B (en) | 2015-06-24 |
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