CN104360120B - 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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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 technology field, interrogate bandwidth in particular to a kind of low pass
The real-time waveform display packing requiring.
Background technology
Field of power at present, the real-time display of waveform depends on field acquisition unit and data is carried out adopt at a high speed
Collection, then by high-speed communication bus, data is passed back backstage, graphical data is shown after receiving data by backstage, is formed in real time
Waveform.Because Wave data amount is big and needs to complete real-time display function, therefore larger communication bandwidth need to be taken.In ordinary circumstance
The on-scene communication bus of lower power system is multiplexing, after real-time waveform transmission takies massive band width, the positive normal open of other equipment
Telecommunication function can be affected, and causes live Electric Power Automation Equipment operation irregularity or even fault.
Content of the invention
Present invention aim to providing a kind of low pass to interrogate the real-time waveform display packing of bandwidth requirement, the method can be big
Width mitigates the pressure communication of power system fieldbus.
For realizing this purpose, the low pass designed by the present invention interrogates the real-time waveform display packing of bandwidth requirement, and its feature exists
In it comprises the steps：
Step 1：The sample devicess of change of current station control system obtain electric power primary equipment in current conversion station, second power equipment and
Ripple amount is recorded in the actual measurement needing the live electric parameters waveform showing in power accessories；
Step 2：Electric power primary equipment, second power equipment in current conversion station is obtained according to equipment manufacturer's data or technical standard
With anaplasia during the actual measurement of the live electric parameters waveform showing with above-mentioned needs in power accessories record ripple amount corresponding record ripple amount
Change canonical reference function, such as above-mentioned record ripple amount time change canonical reference function is periodic function, then go to step 3；As above
Stating record ripple amount time change canonical reference function is aperiodic function, then go to step 4；
Step 3：Above-mentioned record ripple amount periodicity time change canonical reference function is entered into the record of change of current station control system
Ripple transmitting terminal and record ripple receiving terminal, by the actual measurement record ripple amount of the live electric parameters waveform in each moment and above-mentioned corresponding record ripple amount
The value in the corresponding moment for the time change canonical reference function is compared, if the actual measurement of the live electric parameters waveform in each moment
Record ripple amount and the above-mentioned corresponding difference≤default error recording the value in the corresponding moment for the ripple amount time change canonical reference function
Absolute value, then the live electric parameters that the record ripple transmitting terminal of change of current station control system does not obtain in record ripple receiving terminal transmitting step 1
The actual measurement record ripple amount of waveform, the record ripple receiving terminal of change of current station control system is all according to the record ripple amount of default scene electric parameters waveform
Phase property time change canonical reference function carries out data pattern and shows, completes the real-time display function of waveform；
Actual measurement record ripple amount if there are the live electric parameters waveform in a moment and above-mentioned corresponding record ripple amount time change
The default Error Absolute Value of difference ＞ of the value in the corresponding moment for the canonical reference function, then the record ripple transmission of change of current station control system
Hold the actual measurement record ripple amount of the live electric parameters waveform obtaining in record ripple receiving terminal transmitting step 1, the record of change of current station control system
Ripple receiving terminal carries out data pattern by the actual measurement record ripple amount of the live electric parameters waveform receiving and shows, completes waveform and shows in real time
Show function；
Step 4：The scene that the record ripple transmitting terminal of change of current station control system obtains in the record direct transmitting step of ripple receiving terminal 1
Electric parameters waveform actual measurement record ripple amount, change of current station control system record ripple receiving terminal by the live electric parameters waveform receiving reality
Survey record ripple amount carries out data pattern and shows, completes the real-time display function of waveform.
Beneficial effects of the present invention：
Present invention contemplates that it is in the majority to be mostly periodicity variable wherein sinusoidal wave form function under power system waveform, normality,
Using this rule, corresponding periodicity variable, receive in waveform in advance and waveform transmitting terminal sets live electric parameters waveform
Record ripple amount periodicity time change canonical reference function, when each moment live electric parameters waveform actual measurement record ripple amount with above-mentioned
During the corresponding record difference≤default Error Absolute Value of value in each moment for the ripple amount time change canonical reference function, the change of current
The record ripple transmitting terminal of station control system is not to the actual measurement record ripple amount of the live electric parameters waveform of record ripple receiving terminal transmission, change of current stand control
The record ripple receiving terminal of system is according to the record ripple amount periodicity time change functional standard reference value of default scene electric parameters waveform
Carry out data pattern to show；Actual measurement record ripple amount and above-mentioned corresponding record ripple amount when the live electric parameters waveform having a moment
During the default Error Absolute Value of difference ＞ of the value in the corresponding moment for the time change canonical reference function, just carry out recording ripple actual measurement number
According to transmission, waveform receiving terminal carries out waveform and shows according to the record ripple measured value receiving, and so can reduce waveform as far as possible
The transmission of data, in the case of not affecting power system waveform transfer accuracy, improves the transmission effect of power system waveform
Rate, significantly mitigates the pressure communication of power system fieldbus.
Brief description
Fig. 1 is by the actual measurement record ripple amount of the live electric parameters waveform in each moment and above-mentioned corresponding record ripple amount in the present invention
The oscillogram when the value in each moment is compared for the time change canonical reference function；
Fig. 2 is the oscillogram of aperiodic function in the present invention.
Specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail：
A kind of low pass interrogates the real-time waveform display packing of bandwidth requirement, and it comprises the steps：
Step 1：The sample devicess of change of current station control system obtain electric power primary equipment in current conversion station, second power equipment and
Ripple amount is recorded in the actual measurement needing the live electric parameters waveform showing in power accessories；
Step 2：Electric power primary equipment, second power equipment in current conversion station is obtained according to equipment manufacturer's data or technical standard
With anaplasia during the actual measurement of the live electric parameters waveform showing with above-mentioned needs in power accessories record ripple amount corresponding record ripple amount
Change canonical reference function, such as above-mentioned record ripple amount time change canonical reference function is periodic function, then go to step 3；As above
Stating record ripple amount time change canonical reference function is aperiodic function, then go to step 4；
Step 3：Above-mentioned record ripple amount periodicity time change canonical reference function is entered into the record of change of current station control system
Ripple transmitting terminal and record ripple receiving terminal, by the actual measurement record ripple amount of the live electric parameters waveform in each moment and above-mentioned corresponding record ripple amount
The value in the corresponding moment for the time change canonical reference function is compared, if the actual measurement of the live electric parameters waveform in each moment
Record ripple amount and the above-mentioned corresponding difference≤default error recording the value in the corresponding moment for the ripple amount time change canonical reference function
(as shown in figure 1, Fig. 1 belongs in error, in work on the spot, operations staff has different errors to want to absolute value to different variables
Ask, as long as some variable basic trends are consistent, at this moment presetting error just can more greatly, but some variables operations staff needs
Accurate surveying, then the very little that error needs set, once the difference of measured value and predictive value (function value) is more than error, then opens
Dynamic data transmission), then the scene electricity that the record ripple transmitting terminal of change of current station control system does not obtain in record ripple receiving terminal transmitting step 1
Tolerance waveform actual measurement record ripple amount, change of current station control system record ripple receiving terminal according to default scene electric parameters waveform record ripple
Amount periodicity time change canonical reference function carries out data pattern and shows, completes the real-time display function of waveform；
Actual measurement record ripple amount if there are the live electric parameters waveform in a moment and above-mentioned corresponding record ripple amount time change
The default Error Absolute Value of difference ＞ of the value in the corresponding moment for the canonical reference function, then the record ripple transmission of change of current station control system
Hold the actual measurement record ripple amount of the live electric parameters waveform obtaining in record ripple receiving terminal transmitting step 1, the record of change of current station control system
Ripple receiving terminal carries out data pattern by the actual measurement record ripple amount of the live electric parameters waveform receiving and shows, completes waveform and shows in real time
Show function；
Step 4：The scene that the record ripple transmitting terminal of change of current station control system obtains in the record direct transmitting step of ripple receiving terminal 1
Electric parameters waveform actual measurement record ripple amount, change of current station control system record ripple receiving terminal by the live electric parameters waveform receiving reality
Survey record ripple amount carries out data pattern and shows, completes the real-time display function of waveform.
In technique scheme, the record ripple transmitting terminal of described change of current station control system and record ripple receiving terminal clock are synchronous, phase
There is communication between mutually.
In technique scheme, the actual measurement record ripple amount of described scene electric parameters waveform is multiple by arrange sequentially in time
Record wave point data is constituted.The comparison of recorder data refers to the comparison of single record wave point data.
In technique scheme, when recording ripple amount time change canonical reference function for the corresponding function of electric current, described pre-
If Error Absolute Value be 1～3 ampere, when record ripple amount time change canonical reference function be voltage corresponding function when, described
Default Error Absolute Value is 1～3 volt.
In technique scheme, in the current conversion station in described step 1 electric power primary equipment include chopper, disconnecting switch and
Grounding switch, second power equipment includes AC and DC protection device, measure and control device, fault oscillograph, power accessories
Including water cooling equipment, fire-fighting equipment, air-conditioning equipment.
In technique scheme, described record ripple transmitting terminal is to have waveform amount translation function, Wave data sending function
Electric Power Automation Equipment.Described record ripple receiving terminal is the power automation with Wave data receive capabilities and waveform display function
Equipment.
For the scene electricity not having corresponding record ripple amount time change canonical reference function in the step 2 of technique scheme
The actual measurement record ripple amount of tolerance waveform is all processed according to aperiodic function, passes directly to step 4.
In technique scheme, the record ripple receiving terminal of change of current station control system starts record ripple mistake with record ripple transmitting terminal simultaneously
Journey, and transmitting terminal clock must be consistent with receiving terminal clock.
The content that this specification is not described in detail belongs to prior art known to professional and technical personnel in the field.
Claims (5)
1. a kind of low pass interrogates the real-time waveform display packing of bandwidth requirement it is characterised in that it comprises the steps：
Step 1：The sample devicess of change of current station control system obtain electric power primary equipment, second power equipment and electric power in current conversion station
Ripple amount is recorded in the actual measurement needing the live electric parameters waveform showing in auxiliary equipment；
Step 2：Electric power primary equipment, second power equipment and electricity in current conversion station are obtained according to equipment manufacturer's data or technical standard
The actual measurement record ripple amount corresponding record ripple amount time change mark of the live electric parameters waveform showing with above-mentioned needs in power auxiliary equipment
Quasi- reference function, such as above-mentioned record ripple amount time change canonical reference function are periodic function, then go to step 3；As above-mentioned record
Ripple amount time change canonical reference function is aperiodic function, then go to step 4；
Step 3：The record ripple that above-mentioned record ripple amount periodicity time change canonical reference function is entered into change of current station control system is sent out
Sending end and record ripple receiving terminal, by the actual measurement record ripple amount of the live electric parameters waveform in each moment and above-mentioned corresponding record ripple amount time
The value in the corresponding moment for the change canonical reference function is compared, if the actual measurement record ripple of the live electric parameters waveform in each moment
Amount is absolute with the difference≤default error of the above-mentioned corresponding record value in the corresponding moment for the ripple amount time change canonical reference function
Value, then the live electric parameters waveform that the record ripple transmitting terminal of change of current station control system does not obtain in record ripple receiving terminal transmitting step 1
Actual measurement record ripple amount, the record ripple receiving terminal of change of current station control system according to default scene electric parameters waveform record ripple amount periodically
Time change canonical reference function carries out data pattern and shows, completes the real-time display function of waveform；
Actual measurement record ripple amount if there are the live electric parameters waveform in a moment and above-mentioned corresponding record ripple amount time change standard
The default Error Absolute Value of difference ＞ of the value in the corresponding moment for the reference function, then the record ripple transmitting terminal of change of current station control system to
The actual measurement record ripple amount of the live electric parameters waveform obtaining in record ripple receiving terminal transmitting step 1, the record ripple of change of current station control system connects
Receiving end carries out data pattern by the actual measurement record ripple amount of the live electric parameters waveform receiving and shows, completes waveform and shows work(in real time
Energy；
Step 4：The scene that the record ripple transmitting terminal of change of current station control system obtains in the record direct transmitting step of ripple receiving terminal 1 is electrically
The actual measurement record ripple amount of amount waveform, the record ripple receiving terminal of change of current station control system is recorded by the actual measurement of the live electric parameters waveform receiving
Ripple amount carries out data pattern and shows, completes the real-time display function of waveform.
2. low pass according to claim 1 interrogate bandwidth requirement real-time waveform display packing it is characterised in that：Described scene
The actual measurement record ripple amount of electric parameters waveform is made up of the multiple record wave point data arranging sequentially in time.
3. low pass according to claim 1 interrogate bandwidth requirement real-time waveform display packing it is characterised in that：When record ripple amount
When time change canonical reference function is electric current corresponding function, described default Error Absolute Value is 1～3 ampere, when record ripple
When amount time change canonical reference function is voltage corresponding function, described default Error Absolute Value is 1～3 volt.
4. low pass according to claim 1 interrogate bandwidth requirement real-time waveform display packing it is characterised in that：Described step
In current conversion station in 1, electric power primary equipment includes chopper, disconnecting switch and grounding switch, second power equipment include exchange and
Direct current protecting device, measure and control device, fault oscillograph, power accessories include water cooling equipment, fire-fighting equipment, air-conditioning equipment.
5. low pass according to claim 1 interrogate bandwidth requirement real-time waveform display packing it is characterised in that：Described step
In 2 for do not have corresponding record ripple amount time change canonical reference function live electric parameters waveform actual measurement record ripple amount all according to
Aperiodic function is processed, and passes directly to step 4.
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| CN109406993B (en) * | 2018-10-11 | 2021-03-02 | 国网江苏省电力有限公司电力科学研究院 | Relay protection automatic test method, device and system based on wave recording file playback |
| CN110095743B (en) * | 2019-04-14 | 2024-03-29 | 广西电网有限责任公司南宁供电局 | Distribution network terminal wave recording performance test module and waveform fitting method thereof |
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