CN104360120A - Real-time waveform display method with low communication bandwidth requirement - Google Patents
Real-time waveform display method with low communication bandwidth requirement Download PDFInfo
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- CN104360120A CN104360120A CN201410664917.1A CN201410664917A CN104360120A CN 104360120 A CN104360120 A CN 104360120A CN 201410664917 A CN201410664917 A CN 201410664917A CN 104360120 A CN104360120 A CN 104360120A
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Abstract
The invention discloses a real-time waveform display method with a low communication bandwidth requirement. The method comprises the steps that the wave recording amount periodic time change standard reference function of on-site electrical amount waveform is set at a waveform receiving end and a waveform sensing end, when the difference value of the actual measurement wave recording amount of the on-site electrical amount waveform at each moment and the value of the corresponding wave recording amount time change standard reference function at each moment is smaller than or equal to a preset error absolute value, the wave recording sending end of a convertor station control system does not transmit the actual measurement wave recording amount of the on-site electrical amount waveform to the wave recording receiving end, and the wave recording receiving end of the convertor station control system carries out numerical value imaging display according to the preset standard reference value of the wave recording amount periodic time change function of the on-site electrical amount waveform; otherwise, wave recording actual measurement data are transmitted, the waveform receiving end carries out waveform display according to the received wave recording actual measurement numerical value, and therefore transmission of the waveform data can be reduced as much as possible.
Description
Technical field
The present invention relates to the transmission of automation equipment Wave data and display technique field, refer to a kind of real-time waveform display packing of low communication bandwidth requirement particularly.
Background technology
Current field of power, the real-time display of waveform depends on field acquisition unit and carries out high speed acquisition to data, then passes data back backstage by high-speed communication bus, and graphical data shows after receiving data by backstage, forms real-time waveform.Because Wave data amount is large and needed real-time Presentation Function, therefore larger communication bandwidth need be taken.The on-scene communication bus of electric system is multiplexing in the ordinary course of things, and after real-time waveform transmission takies massive band width, the proper communication function of other equipment can be affected, and causes on-the-spot Electric Power Automation Equipment operation irregularity even fault.
Summary of the invention
Object of the present invention is exactly the real-time waveform display packing that will provide a kind of low communication bandwidth requirement, and the method significantly can alleviate the pressure communication of electric system fieldbus.
For realizing this object, the real-time waveform display packing of the low communication bandwidth requirement designed by the present invention, it is characterized in that, it comprises the steps:
Step 1: the sample devices of current conversion station control system obtains the actual measurement record ripple amount needing the on-the-spot electric parameters waveform shown in current conversion station in electric power primary equipment, second power equipment and power accessories;
Step 2: obtain in current conversion station according to equipment manufacturer's data or technical standard and record record ripple amount time variations canonical reference function corresponding to ripple amount with the actual measurement of the on-the-spot electric parameters waveform that above-mentioned needs show in electric power primary equipment, second power equipment and power accessories, if above-mentioned record ripple amount time variations canonical reference function is periodic function, then forward step 3 to; If above-mentioned record ripple amount time variations canonical reference function is aperiodic function, then forward step 4 to;
Step 3: the record ripple transmitting terminal and the record ripple receiving end that above-mentioned record ripple amount periodicity time variations canonical reference function are entered into current conversion station control system, the actual measurement of the on-the-spot electric parameters waveform in each moment record ripple amount is compared in the value in corresponding moment with above-mentioned corresponding record ripple amount time variations canonical reference function, if the actual measurement record ripple amount of the on-the-spot electric parameters waveform in each moment and above-mentioned corresponding record ripple amount time variations canonical reference function are in the Error Absolute Value of the difference≤default of the value in corresponding moment, then the record ripple transmitting terminal of current conversion station control system is not to the actual measurement record ripple amount of the on-the-spot electric parameters waveform of acquisition in record ripple receiving end transmitting step 1, the record ripple receiving end of current conversion station control system carries out data pattern display according to the record ripple amount periodicity time variations canonical reference function of the on-the-spot electric parameters waveform preset, complete the real-time Presentation Function of waveform,
If there is the Error Absolute Value that the actual measurement of the on-the-spot electric parameters waveform in moment record ripple amount is preset at the difference > of the value in corresponding moment with above-mentioned corresponding record ripple amount time variations canonical reference function, then the record ripple transmitting terminal of current conversion station control system records ripple amount to the actual measurement of the on-the-spot electric parameters waveform of acquisition in record ripple receiving end transmitting step 1, the record ripple receiving end of current conversion station control system carries out data pattern display by the actual measurement record ripple amount of the on-the-spot electric parameters waveform received, and completes the real-time Presentation Function of waveform;
Step 4: the record ripple transmitting terminal of current conversion station control system records ripple amount to the actual measurement of the on-the-spot electric parameters waveform of acquisition in the direct transmitting step of record ripple receiving end 1, the record ripple receiving end of current conversion station control system carries out data pattern display by the actual measurement record ripple amount of the on-the-spot electric parameters waveform received, and completes the real-time Presentation Function of waveform.
Beneficial effect of the present invention:
The present invention notices electric system waveform, wherein sinusoidal waveform function is in the majority to be mostly periodically variable under normality, utilize this rule, corresponding periodically variable, the record ripple amount periodically time variations canonical reference function of on-the-spot electric parameters waveform is set in advance in waveform reception and waveform transmitting terminal, when actual measurement record ripple amount and the above-mentioned corresponding record ripple amount time variations canonical reference function of the on-the-spot electric parameters waveform in each moment is when the Error Absolute Value of the difference≤default of the value in each moment, the record ripple transmitting terminal of current conversion station control system does not transmit the actual measurement record ripple amount of on-the-spot electric parameters waveform to record ripple receiving end, the record ripple receiving end of current conversion station control system carries out data pattern display according to the record ripple amount periodicity time variations functional standard reference value of the on-the-spot electric parameters waveform preset, when have the actual measurement of the on-the-spot electric parameters waveform in a moment record ripple amount with above-mentioned corresponding record ripple amount time variations canonical reference function in the Error Absolute Value that the difference > of the value in corresponding moment is default time, just carry out the transmission of recording ripple measured data, waveform receiving end carries out waveform display according to the record ripple measured value received, the transmission of Wave data can be reduced so as much as possible, when not affecting electric system waveform transfer accuracy, improve the transfer efficiency of electric system waveform, significantly alleviate the pressure communication of electric system fieldbus.
Accompanying drawing explanation
Fig. 1 is by the actual measurement of the on-the-spot electric parameters waveform in each moment record ripple amount and the above-mentioned corresponding oscillogram of record ripple amount time variations canonical reference function when the value in each moment compares in the present invention;
Fig. 2 is the oscillogram of non-periodic function in the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail:
A real-time waveform display packing for low communication bandwidth requirement, it comprises the steps:
Step 1: the sample devices of current conversion station control system obtains the actual measurement record ripple amount needing the on-the-spot electric parameters waveform shown in current conversion station in electric power primary equipment, second power equipment and power accessories;
Step 2: obtain in current conversion station according to equipment manufacturer's data or technical standard and record record ripple amount time variations canonical reference function corresponding to ripple amount with the actual measurement of the on-the-spot electric parameters waveform that above-mentioned needs show in electric power primary equipment, second power equipment and power accessories, if above-mentioned record ripple amount time variations canonical reference function is periodic function, then forward step 3 to; If above-mentioned record ripple amount time variations canonical reference function is aperiodic function, then forward step 4 to;
Step 3: the record ripple transmitting terminal and the record ripple receiving end that above-mentioned record ripple amount periodicity time variations canonical reference function are entered into current conversion station control system, the actual measurement of the on-the-spot electric parameters waveform in each moment record ripple amount is compared in the value in corresponding moment with above-mentioned corresponding record ripple amount time variations canonical reference function, if the actual measurement record ripple amount of the on-the-spot electric parameters waveform in each moment and above-mentioned corresponding record ripple amount time variations canonical reference function the difference≤default of the value in corresponding moment Error Absolute Value (as shown in Figure 1, Fig. 1 belongs in error, in work on the spot, operations staff has different error requirements to different variable, as long as some variable basic trends are consistent, at this moment presetting error just can be more greatly, but some variable operations staff needs accurate surveying, what then error needs were established is very little, once the difference of measured value and predicted value (function value) is greater than error, then start data transmission), then the record ripple transmitting terminal of current conversion station control system is not to the actual measurement record ripple amount of the on-the-spot electric parameters waveform of acquisition in record ripple receiving end transmitting step 1, the record ripple receiving end of current conversion station control system carries out data pattern display according to the record ripple amount periodicity time variations canonical reference function of the on-the-spot electric parameters waveform preset, complete the real-time Presentation Function of waveform,
If there is the Error Absolute Value that the actual measurement of the on-the-spot electric parameters waveform in moment record ripple amount is preset at the difference > of the value in corresponding moment with above-mentioned corresponding record ripple amount time variations canonical reference function, then the record ripple transmitting terminal of current conversion station control system records ripple amount to the actual measurement of the on-the-spot electric parameters waveform of acquisition in record ripple receiving end transmitting step 1, the record ripple receiving end of current conversion station control system carries out data pattern display by the actual measurement record ripple amount of the on-the-spot electric parameters waveform received, and completes the real-time Presentation Function of waveform;
Step 4: the record ripple transmitting terminal of current conversion station control system records ripple amount to the actual measurement of the on-the-spot electric parameters waveform of acquisition in the direct transmitting step of record ripple receiving end 1, the record ripple receiving end of current conversion station control system carries out data pattern display by the actual measurement record ripple amount of the on-the-spot electric parameters waveform received, and completes the real-time Presentation Function of waveform.
In technique scheme, there is communication in the record ripple transmitting terminal of described current conversion station control system and record ripple receiving end clock synchronous each other.
In technique scheme, the actual measurement record ripple amount of described on-the-spot electric parameters waveform is made up of the multiple record wave point data arranged according to time sequencing.The comparison of recorder data refers to the comparison of single record wave point data.
In technique scheme, when recording ripple amount time variations canonical reference function and being function corresponding to electric current, described default error is 1 ~ 3 ampere, and when recording ripple amount time variations canonical reference function and being function corresponding to voltage, described default error is 1 ~ 3 volt.
In technique scheme; in current conversion station in described step 1, electric power primary equipment comprises isolating switch, disconnector and grounding switch; second power equipment comprises AC and DC protective device, measure and control device, fault oscillograph, and power accessories comprises water cooling equipment, fire fighting equipment, air-conditioning equipment.
In technique scheme, described record ripple transmitting terminal is the Electric Power Automation Equipment with waveform amount translation function, Wave data sending function.Described record ripple receiving end is the Electric Power Automation Equipment with Wave data receiving function and waveform Presentation Function.
In the step 2 of technique scheme, ripple amount is recorded all according to non-periodic function process for the actual measurement of the on-the-spot electric parameters waveform not having corresponding record ripple amount time variations canonical reference function, directly forward step 4 to.
In technique scheme, the record ripple receiving end of current conversion station control system starts record wave process with record ripple transmitting terminal simultaneously, and transmitting terminal clock must be consistent with receiving end clock.
The content that this instructions is not described in detail belongs to the known prior art of professional and technical personnel in the field.
Claims (5)
1. a real-time waveform display packing for low communication bandwidth requirement, it is characterized in that, it comprises the steps:
Step 1: the sample devices of current conversion station control system obtains the actual measurement record ripple amount needing the on-the-spot electric parameters waveform shown in current conversion station in electric power primary equipment, second power equipment and power accessories;
Step 2: obtain in current conversion station according to equipment manufacturer's data or technical standard and record record ripple amount time variations canonical reference function corresponding to ripple amount with the actual measurement of the on-the-spot electric parameters waveform that above-mentioned needs show in electric power primary equipment, second power equipment and power accessories, if above-mentioned record ripple amount time variations canonical reference function is periodic function, then forward step 3 to; If above-mentioned record ripple amount time variations canonical reference function is aperiodic function, then forward step 4 to;
Step 3: the record ripple transmitting terminal and the record ripple receiving end that above-mentioned record ripple amount periodicity time variations canonical reference function are entered into current conversion station control system, the actual measurement of the on-the-spot electric parameters waveform in each moment record ripple amount is compared in the value in corresponding moment with above-mentioned corresponding record ripple amount time variations canonical reference function, if the actual measurement record ripple amount of the on-the-spot electric parameters waveform in each moment and above-mentioned corresponding record ripple amount time variations canonical reference function are in the Error Absolute Value of the difference≤default of the value in corresponding moment, then the record ripple transmitting terminal of current conversion station control system is not to the actual measurement record ripple amount of the on-the-spot electric parameters waveform of acquisition in record ripple receiving end transmitting step 1, the record ripple receiving end of current conversion station control system carries out data pattern display according to the record ripple amount periodicity time variations canonical reference function of the on-the-spot electric parameters waveform preset, complete the real-time Presentation Function of waveform,
If there is the Error Absolute Value that the actual measurement of the on-the-spot electric parameters waveform in moment record ripple amount is preset at the difference > of the value in corresponding moment with above-mentioned corresponding record ripple amount time variations canonical reference function, then the record ripple transmitting terminal of current conversion station control system records ripple amount to the actual measurement of the on-the-spot electric parameters waveform of acquisition in record ripple receiving end transmitting step 1, the record ripple receiving end of current conversion station control system carries out data pattern display by the actual measurement record ripple amount of the on-the-spot electric parameters waveform received, and completes the real-time Presentation Function of waveform;
Step 4: the record ripple transmitting terminal of current conversion station control system records ripple amount to the actual measurement of the on-the-spot electric parameters waveform of acquisition in the direct transmitting step of record ripple receiving end 1, the record ripple receiving end of current conversion station control system carries out data pattern display by the actual measurement record ripple amount of the on-the-spot electric parameters waveform received, and completes the real-time Presentation Function of waveform.
2. the real-time waveform display packing of low communication bandwidth requirement according to claim 1, is characterized in that: the actual measurement record ripple amount of described on-the-spot electric parameters waveform is made up of the multiple record wave point data arranged according to time sequencing.
3. the real-time waveform display packing of low communication bandwidth requirement according to claim 1, it is characterized in that: when recording ripple amount time variations canonical reference function and being function corresponding to electric current, described default error is 1 ~ 3 ampere, when recording ripple amount time variations canonical reference function and being function corresponding to voltage, described default error is 1 ~ 3 volt.
4. the real-time waveform display packing of low communication bandwidth requirement according to claim 1; it is characterized in that: in the current conversion station in described step 1, electric power primary equipment comprises isolating switch, disconnector and grounding switch; second power equipment comprises AC and DC protective device, measure and control device, fault oscillograph, and power accessories comprises water cooling equipment, fire fighting equipment, air-conditioning equipment.
5. the real-time waveform display packing of low communication bandwidth requirement according to claim 1, it is characterized in that: in described step 2, ripple amount is recorded all according to non-periodic function process for the actual measurement of the on-the-spot electric parameters waveform not having corresponding record ripple amount time variations canonical reference function, directly forward step 4 to.
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Cited By (2)
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| CN109406993A (en) * | 2018-10-11 | 2019-03-01 | 国网江苏省电力有限公司电力科学研究院 | Relay protection automatic test approach, apparatus and system based on recorded wave file playback |
| CN110095743A (en) * | 2019-04-14 | 2019-08-06 | 广西电网有限责任公司南宁供电局 | A kind of distribution network terminal recording performance test module and its waveform fitting method |
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