CN104950704A - Merging unit, sampling value real-time displaying system thereof and sampling value real-time displaying method of merging unit - Google Patents
Merging unit, sampling value real-time displaying system thereof and sampling value real-time displaying method of merging unit Download PDFInfo
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- CN104950704A CN104950704A CN201510212734.0A CN201510212734A CN104950704A CN 104950704 A CN104950704 A CN 104950704A CN 201510212734 A CN201510212734 A CN 201510212734A CN 104950704 A CN104950704 A CN 104950704A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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Abstract
The invention discloses a merging unit, a sampling value real-time displaying system thereof and a sampling value real-time displaying method of the merging unit. The merging unit comprises a memory for storing target programs of a CPU (central processing unit); a data processing unit comprises a resampling module; two sampling value buffering regions which are used for storing the same sampling value data are arranged at an outputting end of the resampling module; the data of one of the sampling value buffering regions are transmitted to a protection measurement and control device; and the data of the other sampling value buffering region are displayed by a displaying unit which invokes the target programs of the CPU. The data which are obtained after sampler values are resampled by the merging unit are copied twice, and the copied data are transmitted to the protection measurement and control device and are displayed through the displaying unit in real time respectively. By the method, a resampling algorithm and sampling value displaying are matched interactively, data in the merging unit can be displayed in real time, the merging unit is easy to operate, an interface is visual, problems are convenient to position, and the work efficiency of debugging personnel is improved greatly.
Description
Technical field
The invention belongs to power system transformer substation technical field of automation, be specifically related to a kind of merge cells sampled value real-time display method.
Background technology
The major function of merge cells collects the Information Monitoring of electronic current/voltage transformer (VT), sends according to certain form, for protection measuring and controlling equipment provides electric current and the voltage data of time consistency.Merge cells, as the interface of electronic mutual inductor and bay device, is an important step of Digital Transmission, in Automation System in Digitalized Substation, is in fundamental position.
Along with the widespread use of IEC61850 standard in electric substation automation system, the application of merge cells also gets more and more, and is combined the function of unit and performance and carries out detection and become more and more important.
Before debugging of dispatching from the factory, in factory, whether device tester meets accuracy requirement to device amplitude, and whether phase place aligns is tested, and often need specific instrument to test, building test environment wastes time and energy, test process more complicated.
In the uniting and adjustment process of engineering site or various experiment, often run into the data that the Related products such as protection can not receive merge cells transmission, or run into the Related products such as protection and show the problems such as the sampled value receiving merge cells display is abnormal, at this moment often need on-the-spot third-party testing instrument of looking for whether correct to the sampled value determined merge cells and send, but work under bad environment at the scene, condition is simple and crude, frequent meeting is because lack the objective condition such as instrument and equipment, field adjustable problem is caused to be difficult to location, problem slowly can not get solving, finally cause project progress slow, even there is the extension of engineering or drag the phase.
Based on above-mentioned analysis, when merge cells carries out dispatching from the factory debugging, on-the-spot uniting and adjustment, various experiment cooperation, often there will be some problems, location gets up to bother very much; In addition, and if want orientation problem, also have higher requirement to around objective condition, and add workload, waste a large amount of time.
Chinese Patent Application No. 201020601619 discloses a kind of proving installation of merge cells, utilize instrumentation realize being combined the time delays test of unit input and output time, sampling precision test, sampling pulse and time target error testing, real-time waveform data analysis display, the function such as waveform recording and test data display.What but this proving installation finally showed is all according to the process of fc-specific test FC object or through the data of comparative analysis or figure, do not record real-time sampled value, truly can not reflect the situation of raw data, cannot accurately locate when going wrong, and this proving installation must be depended on could realize, limitation is larger.
Summary of the invention
The object of this invention is to provide a kind of merge cells sampled value real-time display method, for solve dispatch from the factory before debugging, run in engineering and experiment uniting and adjustment thereof sampled value abnormal time position fixing process complicated, the problem that difficulty is large.
In order to realize above object, the technical solution adopted in the present invention is: a kind of merge cells, and comprise the data processing unit be connected with the signal output part of multiple inner AD collector, this merge cells also comprises the storer for storing target cpu program; Described data processing unit comprises resampling module; the output terminal of resampling module is provided with two sampled value buffer areas for storing identical sample values; the data of one of them sampled value buffer area are used for being sent to protection supervisory equipment, and the data of another sampled value buffer area are used for being shown by the display unit calling target cpu program.
The data of described second sampled value buffer area are transferred to display unit from merge cells in the mode of RPC.
Target cpu program in described merge cells storer is used for being downloaded in display unit by the mode of FTP.
A kind of merge cells sampled value real-time display system, comprise merge cells and display unit, described merge cells comprises the data processing unit be connected with the signal output part of multiple inner AD collector, and described merge cells also comprises the storer for storing target cpu program; Described data processing unit comprises resampling module; the output terminal of resampling module is provided with two sampled value buffer areas for storing identical sample values; the data of one of them sampled value buffer area are used for being sent to protection supervisory equipment, and the data of another sampled value buffer area are used for being shown by the display unit calling target cpu program.
The data of described second sampled value buffer area are transferred to display unit from merge cells in the mode of RPC.
Target cpu program in described merge cells storer is used for being downloaded in display unit by the mode of FTP.
A kind of merge cells sampled value real-time display method, merge cells is copied into two parts by after the sampled value process of each collector, puts into two sampled value buffer areas respectively, and is shown by display unit by the sample values of one of them buffer area.
Described merge cells also comprises the storer for storing target cpu program, and display unit calls this target cpu program, and from merge cells, transfers sample values to display unit in the mode of RPC.
Target cpu program in described merge cells storer is used for being downloaded in display unit by the mode of FTP.
Data Replica after merge cells is carried out resampling to collector value with method by merge cells of the present invention and sampled value real-time display system thereof becomes two parts, and put into two pieces of internal memories respectively, the data in one piece of internal memory are used for being sent to protection supervisory equipment; Data in other one piece of internal memory are shown in real time by display unit.This display packing is by resampling methods and sampled value display reciprocal, realize merge cells internal data real-time exhibition, can know whether merge cells sampled value normally sends, in debugging of dispatching from the factory, on-the-spot uniting and adjustment, various experiment, product can conclude problem in interconnecting fast, simple operation, interface visualization, orientation problem judicial convenience, the work efficiency substantially increasing commissioning staff has larger practical value.
This display packing take RPC as the sampled value that medium takes out in internal memory, respectively the effective value of sampled value, real-time phase are shown by the form of 9-2 message, graceful code FT3, asynchronous FT3, and statistics display is carried out to maximum effective value, minimum effective value, maximum positive phase difference, minimum positive phase difference, and have benchmark is elected as to any passage, do the function of phase correlation display.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of merge cells sampled value real-time display system.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, the present invention is described further.
Be illustrated in figure 1 the schematic diagram of merge cells sampled value real-time display system of the present invention, as seen from the figure, this display system comprises merge cells and display unit, merge cells comprises the data processing unit be connected with the signal output part of multiple inner AD collector, also comprises the storer for storing target cpu program; Data processing unit comprises resampling module; the output terminal of resampling module is provided with two the sampled value buffer areas (the sampled value buffer memory 1 in figure and sampled value buffer memory 2) for storing identical sample values; the data of one of them sampled value buffer area are by being sent to protection supervisory equipment after data framing, and the data of another sampled value buffer area are used for being shown by the display unit calling target cpu program.
In current intelligent substation, if not synchronous between collector, even if then its sample frequency is consistent and can not ensures the consistance of its sampling instant, and due to the reason of hardware time delay, even same collector, its different interchannel also exists certain asynchronous.Therefore, the main of merge cells just shows as: the combination data from the different passage of different acquisition device being carried out time correlation, make it in the frame message sent, the Data Representation of different passage is the sampled value of synchronization.This is generally had to two kinds of methods: one is provide synchronizing pulse by merge cells to collector, thus make between collector, to keep synchronous, two is make without the need to synchronously between collector, but carries out resampling by merge cells sample interpolation method to data, thus makes it reach synchronous.Because a kind of front method will increase the complicacy of collector, therefore, many employing the latter carry out synchronously at present.The present invention also adopts rear a kind of mode.Certainly, before adopting, a kind of mode is also in protection scope of the present invention.
The processor of the present embodiment merge cells adopts CPU, after merge cells device powers on, CPU carries out initialization, after initialization completes, CPU adopts resampling methods, interpolation is carried out to collector value, by interpolation, the phase place of each collector is adjusted according to collector time delay, the value of this sampled value at other points can be estimated in the value condition at finite point place by sampled value, and the form of sampled value according to message is packed respectively, general with 9-2 message, graceful code FT3, the form of asynchronous FT3 is typical case, the sample values that resampling obtains is copied into two parts simultaneously, two pieces of internal memories are put into respectively by memory management, namely first, the second two sampled value buffer areas, data in one piece of internal memory are used for point-to-point transmission or the networking transmission of CPU, data in other one piece of internal memory are for the sampled value show tools of display unit.
The resampling of the present embodiment adopts interpolation algorithm, and interpolation algorithm is the simplest method of one of approximation of function, utilizes interpolation algorithm can estimate the value of this function at other some place by function in the value situation at finite point place.And the detailed process of difference arithmetic belongs to the ordinary skill in the art, repeat no more here.
Present invention also offers a kind of merge cells, the difference of itself and above-mentioned merge cells sampled value real-time display system is not comprise the display unit adopting PC, that is, when producing merge cells, the storer (FLASH) that only need be realized two necessary sampled value buffer areas of Presentation Function and be used for storing target cpu program configures, and when practical application, then configure display unit at the scene to realize the real-time display of sampled value.Certainly, display unit here is also not limited to use PC, and other CPU processors with similar functions are all in protection scope of the present invention.
Present invention also offers a kind of merge cells sampled value real-time display method, merge cells is copied into two parts by after the sampled value process of each collector, put into two buffer areas respectively, and the sample values of one of them buffer area is shown by display unit.
Target cpu program in merge cells storer is used for being downloaded in display unit by the mode of FTP, and display unit calls this target cpu program, and from merge cells, transfers sample values to display unit in the mode of RPC.
Display unit of the present invention adopts PC to realize, sampled value show tools is arranged on PC, by Ethernet, PC and merge cells are set up physical connection, by FTP (file transfer protocol (FTP), File Transfer Protocol) mode that logs in, by target cpu download program to local, by means of RPC (remote procedure call protocol, Remote Procedure Call Protocol) be medium, utilize the uniqueness of variable symbol corresponding address, data in CPU internal memory are taken out, utilizes sampled value show tools to show in real time.
The transmitted in both directions of the control documents of FTP on Internet, it is also an application program simultaneously.Have different FTP application programs based on different operating system, and all these application programs all observe same agreement with transfer files.Use during FTP and must first log in, after distance host obtains corresponding authority, can download or upload file.That is, want which platform computing machine to transmit file with, just must have the proper authorization of which platform computing machine.FTP download be exactly from distance host (merge cells of the present embodiment) copied files to the computing machine (PC of the present embodiment) of oneself, namely for by client program from distance host download file.
Memory management utilizes Ethernet to realize CPU black box program to run visual a kind of technology, mainly the data in internal memory shown in real time by the address that the debugging variable in device program is corresponding.
Target cpu program is that merge cells CPU source program is compiled by software translating environment, and the machine code generated, the executable program that also can be run by boot program loads.The target cpu program being applied to merge cells completes data processing, task scheduling, the application function of merge cells, and can with the communication of display unit implementation process.
Sampled value show tools is a kind of instrument (can install to the application software on PC) of the debugging variable of merge cells device program and interface being combined closely, the real-time display of the data in implement device program in debugging variable, the sampled value of all passages of resampling takes out in the mode of RPC by it, and parse amplitude, phase place is filled up on interface corresponding to instrument.Tools interfaces comprises the display interface button of the 9-2 message of CPU transmission, graceful code FT3, asynchronous FT3, and each function interface can be added up sampled value maximal value, sampled value minimum value, maximum positive phase, maximum minus phase.Interface is supported right button selects sampled value reference channel, the phase place of the sampled value of other passages calculates real-time display relative to the phase deviation of this passage, is convenient to the relative phase deviation that Real-Time Monitoring merge cells exports sampled value.
Above embodiment only understands core concept of the present invention for helping; the present invention can not be limited with this; for those skilled in the art; every according to thought of the present invention; the present invention is modified or equivalent replacement; any change done in specific embodiments and applications, all should be included within protection scope of the present invention.
Claims (9)
1. a merge cells, comprising the data processing unit be connected with the signal output part of multiple inner AD collector, it is characterized in that: this merge cells also comprises the storer for storing target cpu program; Described data processing unit comprises resampling module; the output terminal of resampling module is provided with two sampled value buffer areas for storing identical sample values; the data of one of them sampled value buffer area are used for being sent to protection supervisory equipment, and the data of another sampled value buffer area are used for being shown by the display unit calling target cpu program.
2. merge cells according to claim 1, is characterized in that: the data of described second sampled value buffer area are transferred to display unit from merge cells in the mode of RPC.
3. merge cells according to claim 1 and 2, is characterized in that: the target cpu program in described merge cells storer is used for being downloaded in display unit by the mode of FTP.
4. a merge cells sampled value real-time display system, comprise merge cells and display unit, described merge cells comprises the data processing unit be connected with the signal output part of multiple inner AD collector, it is characterized in that: described merge cells also comprises the storer for storing target cpu program; Described data processing unit comprises resampling module; the output terminal of resampling module is provided with two sampled value buffer areas for storing identical sample values; the data of one of them sampled value buffer area are used for being sent to protection supervisory equipment, and the data of another sampled value buffer area are used for being shown by the display unit calling target cpu program.
5. merge cells sampled value real-time display system according to claim 4, is characterized in that: the data of described second sampled value buffer area are transferred to display unit from merge cells in the mode of RPC.
6. the merge cells sampled value real-time display system according to claim 4 or 5, is characterized in that: the target cpu program in described merge cells storer is used for being downloaded in display unit by the mode of FTP.
7. a merge cells sampled value real-time display method, it is characterized in that: merge cells is copied into two parts by after the sampled value process of each collector, put into two sampled value buffer areas respectively, and the sample values of one of them buffer area is shown by display unit.
8. merge cells sampled value real-time display method according to claim 7, it is characterized in that: described merge cells also comprises the storer for storing target cpu program, display unit calls this target cpu program, and from merge cells, transfers sample values to display unit in the mode of RPC.
9. merge cells sampled value real-time display method according to claim 8, is characterized in that: the target cpu program in described merge cells storer is used for being downloaded in display unit by the mode of FTP.
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