CN104535912B - oscillation wave partial discharge detection waveform generation method and device - Google Patents
oscillation wave partial discharge detection waveform generation method and device Download PDFInfo
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- CN104535912B CN104535912B CN201510019266.5A CN201510019266A CN104535912B CN 104535912 B CN104535912 B CN 104535912B CN 201510019266 A CN201510019266 A CN 201510019266A CN 104535912 B CN104535912 B CN 104535912B
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Abstract
The present invention relates to a kind of oscillation wave partial discharge detection waveform generation method and device, methods described includes step：The cable physical parameter of user input is obtained, and obtains partial discharge waveform data；Generation identical first queue and second queue, and delimit proximal points memory cell, remote point memory cell, partial discharge point memory cell, joint memory paragraph and decay memory paragraph respectively in the first queue and second queue；It is stored in identical Wave data respectively in first queue and second queue, and the Wave data stored in first queue and second queue is moved by default queue movement rule；Receive first team and line up the spilling Wave data that head or second queue team head overflow, and when the length of the spilling Wave data is more than preset length, by the spilling Wave data generation Partial Discharge Detection waveform.The present invention can effectively reduce the time and hardware cost needed for being simulated by hardware mode such that it is able to improve the simulation efficiency of cable Site Detection.
Description
【Technical field】
The present invention relates to transmission line faultlocating technology, more particularly to oscillation wave partial discharge detection waveform generation method and
Device.
【Background technology】
Partial Discharge Detection is one of most effectual way of quantitative analysis insulation ag(e)ing degree.OWTS(Oscillating
Wave Test System, wave of oscillation partial discharge testing system for) oscillation wave partial discharge is detected and location technology is international in recent years
Upper emerging cable local discharge diagnosis new technology.Related research shows, OWTS oscillating wave voltages and 50HZ industrial-frequency alternating currents
The partial discharge location result of pressure is fairly close, and the equivalence of alternating voltage is good, and oscillating wave voltage partial discharge test
Action time is short, equipment is light, and be easy to carry transport, and effectively cable can be diagnosed, and will not be triggered in the cable again
New defect, is particularly well-suited to field test.
But the current emulation technology on oscillating wave voltage method cable Site Detection is still very deficient, particularly in part
The analog simulation aspect of discharge examination waveform, existing technology is to simulate in hardware, and instrument and equipment price is high, and
Hardware (such as cable, joint etc.) needed for various emulation is difficult to a large amount of outfits, causes emulation cost very high high and hard
Part mode is simulated needs complicated operating process, and the simulation efficiency for being easily caused cable Site Detection is low so that engineering staff is difficult
Generally to be emulated to the polarity of cable Site Detection using hardware mode.
【The content of the invention】
Based on this, it is necessary to in the prior art cannot cable Site Detection the low problem of simulation efficiency, there is provided
Oscillation wave partial discharge detection waveform generation method.
A kind of oscillation wave partial discharge detection waveform generation method, including step：
The cable physical parameter of user input is obtained, and obtains the partial discharge waveform corresponding with the cable physical parameter
Data, wherein the cable physical parameter includes cable length, joint to test point distance and partial discharge point to test point distance；
According to the cable length generate identical first queue and second queue, and according to the joint to test point away from
From and partial discharge point to test point with a distance from delimit proximal points memory cell, distal end respectively in the first queue and second queue
Point memory cell, partial discharge point memory cell, joint memory paragraph and decay memory paragraph, wherein the proximal points memory cell is located at
Team's head position of first queue and second queue；
It is stored in identical Wave data respectively in first queue and second queue, and by default queue movement rule
The Wave data stored in mobile first queue and second queue, wherein partial discharge point memory cell is stored in the partial discharge ripple
Wave data, proximal points memory cell, remote point memory cell, partial discharge point memory cell and decay memory paragraph are stored in pre- respectively
If initial waveform data；
Receive first team and line up the spilling Wave data that head or second queue team head overflow, and in the spilling Wave data
Length be more than preset length when, by it is described spilling Wave data generation Partial Discharge Detection waveform.
Correspondingly, the present invention also provides a kind of oscillation wave partial discharge detection waveform generating means, including：
Parameter acquisition module, the cable physical parameter for obtaining user input, and obtain and the cable physical parameter
Corresponding partial discharge waveform data, wherein the cable physical parameter include cable length, joint to test point distance and
Partial discharge point is to test point distance；
Queue generation module, for generating identical first queue and second queue, and foundation according to the cable length
The joint to test point distance and partial discharge point to test point distance delimited respectively in the first queue and second queue
Proximal points memory cell, remote point memory cell, partial discharge point memory cell, joint memory paragraph and decay memory paragraph, wherein institute
Proximal points memory cell is stated positioned at team's head position of first queue and second queue；
Queue mobile module, for being stored in identical Wave data respectively in first queue and second queue, and passes through
The Wave data stored in default queue movement rule movement first queue and second queue, wherein partial discharge point is stored
Unit is stored in the partial discharge waveform data, proximal points memory cell, remote point memory cell, partial discharge point memory cell and declines
Subtract memory paragraph and be stored in default initial waveform data respectively；；
Waveform generating module, the spilling Wave data that head or second queue team head overflow is lined up for receiving first team, and
When the length of the spilling Wave data is more than preset length, by the spilling Wave data generation Partial Discharge Detection ripple
Shape.
The present invention obtain user input cable physical parameter after, from storage partial discharge ripple database according to the thing
Reason parameter obtains corresponding partial discharge waveform data；Simultaneously, identical first queue and second are generated according to cable length
Queue, and the first queue and second queue are split according to cable physical parameter；Then in first queue and second
Identical Wave data is stored in queue respectively, and by default queue movement rule movement first queue and second queue
The Wave data for being stored；Finally receive first team and line up the spilling Wave data that head or second queue team head overflow, and in institute
When stating the length for overflowing Wave data more than preset length, by the spilling Wave data generation Partial Discharge Detection waveform.This
Invention is simulated according to the propagating characteristic of cable by way of the Wave data stored in mobile first queue and second queue
The transmission in the cable of partial discharge ripple, it is strong with portable value even if being simulated to partial discharge ripple with the mode of computer software
The characteristics of, can effectively reduce the time needed for being simulated by hardware mode and hardware cost such that it is able to improve cable scene
The simulation efficiency of detection.
【Brief description of the drawings】
Fig. 1 is a kind of flow chart of embodiment of a kind of oscillation wave partial discharge detection waveform generation method of the invention；
Fig. 2 is that a kind of a kind of queue structure of embodiment of oscillation wave partial discharge detection waveform generation method of the invention is illustrated
Figure；
Fig. 3 is a kind of structured flowchart of embodiment of a kind of oscillation wave partial discharge detection waveform generation method of the invention.
【Specific embodiment】
In order that the object, technical solutions and advantages of the present invention are clearer, below in conjunction with accompanying drawing the present invention is made into
One step ground is described in detail.
Fig. 1 is referred to, it is a kind of stream of embodiment of a kind of oscillation wave partial discharge detection waveform generation method of the invention
Cheng Tu.
A kind of oscillation wave partial discharge detection waveform generation method, including step：
S101：The cable physical parameter of user input is obtained, and obtains the partial discharge corresponding with the cable physical parameter
Waveform data；
Wherein described cable physical parameter include cable length, joint to test point distance and partial discharge point to test point away from
From；
User will from inputting interface input cable physical parameter, the cable physical parameter at least include cable length,
Joint is to test point distance and partial discharge point to test point distance.Then according to the physics in the database of storage partial discharge ripple
Parameter obtains corresponding partial discharge waveform data.Wherein, the mode of the acquisition partial discharge waveform data can be：Inquiry cable
The joint distance of length of interval, joint where length to test point apart from place is interval and partial discharge point to test point apart from institute
Partial discharge point distance it is interval；Then inquire about with the length of interval, joint distance is interval and partial discharge point distance is interval relative
The partial discharge waveform data answered, and extract the partial discharge waveform data.When partial discharge point number is more than one, it is necessary to be directed to every
Individual partial discharge point obtains a corresponding partial discharge waveform data.
S102：Identical first queue and second queue are generated according to the cable length, and according to the joint to inspection
Measuring point distance and partial discharge point delimit proximal points storage list to test point distance respectively in the first queue and second queue
Unit, remote point memory cell, partial discharge point memory cell, joint memory paragraph and decay memory paragraph, wherein the proximal points are stored
Unit is located at team's head position of first queue and second queue；
The memory cell according to needed for the cable length calculates first queue and second queue using default computing formula
Quantity, the first queue and second queue of generation equal length and structure, wherein the cable length and first queue and the
The quantity of memory cell is directly proportional needed for two queues.
After generation identical first queue and second queue, according to the joint in cable physical parameter to test point distance
And partial discharge point to test point distance delimit proximal points memory cell, remote point respectively in the first queue and second queue
Memory cell, partial discharge point memory cell, joint memory paragraph and decay memory paragraph.
Preferably, the proximal points memory cell is located at team's head position of first queue and second queue, the remote point
Memory cell is located at the tail of the queue position of first queue and second queue, and decay memory paragraph is located at the team of first queue and second queue
Position before tail, the position where partial discharge point memory cell and joint memory paragraph is according to joint to test point distance and partial discharge
Point to test point distance determines that such as partial discharge point to test point distance is 2 meters, and joint to test point distance is 10 meters i.e. partial discharge
Point to test point distance is more than joint to test point, therefore, partial discharge point memory cell connects after proximal points memory cell
Head memory paragraph is between partial discharge point memory cell and decay memory paragraph.As a specific example, as shown in Fig. 2 first team
Row A is identical with second queue B structure and length is identical, and first queue A and second queue B are continuously deposited by several
The Coutinuous store of storage unit composition is interval, and wherein proximal points memory cell 201 is located at team's head of first queue A and second queue B,
Remote point memory cell 207 is located at the tail of the queue of first queue A and second queue B, and decay memory paragraph 206 is located at remote point and stores single
Before unit, after proximal points memory cell 201, joint memory paragraph 204 is stored partial discharge point memory cell 202 located at partial discharge point
Between unit 202 and decay memory paragraph 206.
Splitting according to the method described above for first queue and second queue being capable of the accurately and effectively mould by way of queue
Intend the transmission means of cable transmitted in both directions.
S103：It is stored in identical Wave data respectively in first queue and second queue, and is moved by default queue
The Wave data stored in the dynamic mobile first queue of rule and second queue, wherein partial discharge point memory cell be stored in it is described
Partial discharge waveform data, proximal points memory cell, remote point memory cell, partial discharge point memory cell and decay memory paragraph difference
It is stored in default initial waveform data；
Obtain the storage address of first queue and second queue respectively, then according to the storage address in first queue and
Identical Wave data is stored in second queue, wherein, the partial discharge waveform data obtained in step S101 is stored in the respectively
Default initial waveform data are stored in first queue and second by the partial discharge point memory cell in one queue and second queue respectively
Proximal points memory cell, remote point memory cell, partial discharge point memory cell and decay memory paragraph in queue.
Then external timing signal is accessed, when each clock signal (rising edge or high level) arrives, by default
Movement rule movement first queue and second queue in the Wave data that is stored, wherein the movement rule at least includes the
The moving direction of the Wave data that the Wave data and second queue stored in one queue are stored is opposite.
S104：Receive first team and line up the spilling Wave data that head or second queue team head overflow, and in the spilling ripple
When the length of graphic data is more than preset length, by the spilling Wave data generation Partial Discharge Detection waveform.
If the Wave data stored in first queue is mobile toward team's head in each clock signal, every time mobile the
One queue team head occurs spilling, now receives the spilling Wave data that first team lines up head spilling.
If the Wave data stored in first queue is moved in each clock signal toward tail of the queue, every time mobile the
Two queue teams head occurs spilling, now receives the spilling Wave data that second queue team head overflows.
The spilling Wave data is persistently received, when the length of the spilling Wave data is more than preset length, can be stopped
Only incoming clock signal, and stop receiving the spilling Wave data, then put according to the spilling Wave data generation is local
Electro-detection waveform.
The present invention obtain user input cable physical parameter after, from storage partial discharge ripple database according to the thing
Reason parameter obtains corresponding partial discharge waveform data；Simultaneously, identical first queue and second are generated according to cable length
Queue, and the first queue and second queue are split according to cable physical parameter；Then in first queue and second
Identical Wave data is stored in queue respectively, and by default queue movement rule movement first queue and second queue
The Wave data for being stored；Finally receive first team and line up the spilling Wave data that head or second queue team head overflow, and in institute
When stating the length for overflowing Wave data more than preset length, by the spilling Wave data generation Partial Discharge Detection waveform.This
Invention is simulated according to the propagating characteristic of cable by way of the Wave data stored in mobile first queue and second queue
The transmission in the cable of partial discharge ripple, it is strong with portable value even if being simulated to partial discharge ripple with the mode of computer software
The characteristics of, can effectively reduce the time needed for being simulated by hardware mode and hardware cost such that it is able to improve cable scene
The simulation efficiency of detection.
In one embodiment, the remote point memory cell in above-mentioned steps S102 is located at first queue and the second team
The tail of the queue of row, the decay memory paragraph includes at least one decay memory cell, and the joint memory paragraph includes that joint input is deposited
Storage unit and joint output memory cell.
Further, by default queue movement rule movement first queue and second queue in above-mentioned steps S103
Data storage the step of, following sub-step can be included.
S201：By the proximal points memory cell in first queue, partial discharge point memory cell, joint output memory cell and
The Wave data stored in decay memory cell moves a memory cell storage toward the tail of the queue of first queue, by second queue
In remote point memory cell, partial discharge point memory cell and decay memory cell in the Wave data that is stored toward second queue
The mobile memory cell storage of team's head；
Wherein, it is each decay memory cell before Wave data is stored in Wave data to be deposited by default decay
Model carries out decay conversion；
When external clock signal (rising edge or high level) arrives, first, first queue and the second team are extracted respectively
The Wave data stored in partial discharge point memory cell, joint output memory cell and decay memory cell in row, and extract
The Wave data that remote point memory cell is stored in proximal points memory cell and second queue in first queue.
The Wave data that will be extracted in first queue moves the storage of memory cell toward the tail of the queue of first queue, by the
The Wave data extracted in two queues is stored toward the mobile memory cell of enemy of second queue, so as to realize first queue
The moving direction of the Wave data that middle stored Wave data and second queue are stored is opposite.
Especially, it should be noted that, for each decay memory cell in decay memory paragraph, before Wave data is stored in
Wave data to be deposited is carried out into decay conversion using default attenuation model, after decay is converted, then will be declined
Wave data after turn reducing is changed is stored in.
S202：The Wave data that first queue and second queue center tap input memory cell are stored is obtained respectively, and
Exported respectively to first queue and the second team after reflection projection conversion is carried out to the Wave data using default Connector Model
The joint output memory cell storage of row；
The Wave data that first queue and second queue center tap input memory cell are stored is obtained respectively, then should
Wave data is input into default Connector Model.
Reflection projection conversion is carried out to the Wave data using the Connector Model, is then exported respectively again to first queue
Joint output memory cell with second queue is stored.
S203：The first spilling Wave data of distal memory cell spilling in first queue is obtained, described first is overflowed
Wave data is stored in the distal memory cell of second queue after default end points model carries out reflection conversion；
The tail of the queue of first queue and second queue is located at due to distal memory cell, in the present embodiment, each clock letter
Number arrive when, in first queue distal memory cell will appear from overflow.
Now, the first spilling Wave data of distal memory cell spilling in first queue is obtained, described first is overflowed
Wave data substitutes into default end points model, and carrying out reflection to the described first spilling Wave data by default end points model turns
Change.Then in the distal memory cell for the first spilling Wave data after reflecting conversion being stored in into second queue.
S204：The second spilling Wave data of proximal memory cell spilling in second queue is obtained, described second is overflowed
Wave data is stored in the proximal memory cell of first queue after default end points model carries out reflection conversion.
Team's head of first queue and second queue is located at due to proximal memory cell, in the present embodiment, each clock letter
Number arrive when, in second queue proximal memory cell will appear from overflow.
Now, the second spilling Wave data of proximal memory cell spilling in second queue is obtained, described second is overflowed
Wave data substitutes into default end points model, and carrying out reflection to the described second spilling Wave data by default end points model turns
Change.Then in the proximal memory cell for the second spilling Wave data after reflecting conversion being stored in into first queue.
It should be noted that above-mentioned steps S201 to S204, when external clock signal arrives, should perform simultaneously.
The moving direction of the Wave data stored by the Wave data and second queue that make to be stored in first queue
Conversely, and by using default Connector Model butt joint input memory cell in Wave data carry out reflection projection conversion,
Then proximal memory cell overflows in the first spilling Wave data and second queue that are overflowed to distal memory cell in first queue
The the second spilling Wave data for going out carries out reflection conversion, being capable of effectively the transmitted in both directions characteristic of dummycable, cable center tap
The reflection characteristic of transmission and reflection characteristic and cable end points, so that ultimately generate Partial Discharge Detection waveform can be more
Meet the actual conditions of cable.
In one embodiment, after above-mentioned steps S104, can also further comprise the following steps：
S301：The noise waveform of preset length is obtained using default noise model, the noise waveform is superimposed to institute
Partial Discharge Detection waveform is stated, the actually detected waveform of shelf depreciation is generated.
The noise waveform of default noise model output is received, when the length of the noise waveform reaches preset length, will
The noise waveform is superimposed to the Partial Discharge Detection waveform, ultimately produces the actually detected waveform of shelf depreciation.It is wherein described
Noise waveform can be additive white Gaussian noise.
The Partial Discharge Detection waveform is superimposed to by by the noise waveform, so that ultimately generating shelf depreciation reality
Border detection waveform makes the actually detected waveform of the shelf depreciation further accord with additive white Gaussian noise common in cable
Close the actual noise feature of cable.
In one embodiment, can also be comprised the following steps before above-mentioned steps S201：
S401：Obtain the Joint Parameter of user input and set up Connector Model according to the Joint Parameter, wherein, it is described to connect
Head parameter includes the reflectance factor of positive transmission and the reflectance factor and transmission coefficient of transmission coefficient and reverse transfer；
The Joint Parameter that user is input into from inputting interface is obtained, the Joint Parameter at least includes the reflection system of positive transmission
The reflectance factor and transmission coefficient of number and transmission coefficient and reverse transfer.Then the Joint Parameter is input into default two end
Mouth mold type, to set up Connector Model.
The Connector Model is two-port network, and its formula is,
Wherein
Y1For the joint of second queue exports memory cell, Y2For the joint of first queue exports memory cell, X1It is first
The joint input memory cell of queue, X2For the joint of second queue is input into memory cell, t11、t12Respectively positive transmission reflection
Coefficient and transmission coefficient, t21、t22Respectively reverse transfer reflectance factor and transmission coefficient.
By obtaining the Joint Parameter of user input and according to the Joint Parameter setting up Connector Model so that user can
Actual variance according to cable sets corresponding Joint Parameter, it is ensured that Connector Model can simulate the actual reflection of joint and thoroughly
Penetrate characteristic.
In one embodiment, can also further be comprised the following steps before above-mentioned steps S201：
S501：The cable attenuation coefficient of user input is obtained, attenuation model is set up according to the cable attenuation coefficient；
The cable attenuation coefficient that user is input into from inputting interface is obtained, is then substituted into the cable attenuation coefficient default
In ssystem transfer function, to generate attenuation model.The formula of the attenuation model for ultimately generating is：
| Y (ω) |=| H (ω) | | X (ω) |, wherein, | Y (ω) | is the spectrum amplitude of Wave data after decay conversion, | H
(ω) | it is cable attenuation coefficient, | X (ω) | is the spectrum amplitude of Wave data after decay conversion.
By obtaining the attenuation coefficient of user input and according to the attenuation coefficient setting up attenuation model so that user can
The corresponding attenuation coefficient of actual attenuation property settings according to cable, it is ensured that attenuation model being capable of the actual decay of dummycable
Characteristic.
Fig. 3 is referred to, it is a kind of knot of embodiment of a kind of oscillation wave partial discharge detection waveform generating means of the invention
Structure block diagram.
A kind of oscillation wave partial discharge detection waveform generating means, including：
Parameter acquisition module 301, the cable physical parameter for obtaining user input, and obtain and cable physics ginseng
The corresponding partial discharge waveform data of amount；
Wherein described cable physical parameter include cable length, joint to test point distance and partial discharge point to test point away from
From；
User will from inputting interface input cable physical parameter, the cable physical parameter at least include cable length,
Joint is to test point distance and partial discharge point to test point distance.Then parameter acquisition module 301 is storing the data of partial discharge ripple
Corresponding partial discharge waveform data is obtained according to the physical parameter in storehouse.Wherein, the side of the partial discharge waveform data is obtained
Formula can be：Parameter acquisition module 301 inquiry cable length where length of interval, joint to test point apart from place joint
The partial discharge point distance that distance is interval and partial discharge point is to test point apart from place is interval；Then parameter acquisition module 301 inquiry with
The length of interval, the partial discharge waveform data that joint distance is interval and partial discharge point distance interval is corresponding, and extract described
Partial discharge waveform data.When partial discharge point number is more than one, parameter acquisition module 301 needs to obtain one for each partial discharge point
Individual corresponding partial discharge waveform data.
Queue generation module 302, for according to the cable length generate identical first queue and second queue, and according to
Drawn respectively in the first queue and second queue according to the joint to test point distance and partial discharge point to test point distance
Determine proximal points memory cell, remote point memory cell, partial discharge point memory cell, joint memory paragraph and decay memory paragraph, wherein
The proximal points memory cell is located at team's head position of first queue and second queue；
Queue generation module 302 calculates first queue and the second team according to the cable length using default computing formula
The first queue and second queue of the quantity of memory cell needed for row, generation equal length and structure, wherein the cable length
Quantity to memory cell needed for first queue and second queue is directly proportional.
After generation identical first queue and second queue, queue generation module 302 is according in cable physical parameter
Joint to test point distance and partial discharge point to test point distance delimit near-end respectively in the first queue and second queue
Point memory cell, remote point memory cell, partial discharge point memory cell, joint memory paragraph and decay memory paragraph.
Preferably, the proximal points memory cell is located at team's head position of first queue and second queue, the remote point
Memory cell is located at the tail of the queue position of first queue and second queue, and decay memory paragraph is located at the team of first queue and second queue
Position before tail, the position where partial discharge point memory cell and joint memory paragraph is according to joint to test point distance and partial discharge
Point to test point distance determines that such as partial discharge point to test point distance is 2 meters, and joint to test point distance is 10 meters i.e. partial discharge
Point to test point distance is more than joint to test point, therefore, partial discharge point memory cell connects after proximal points memory cell
Head memory paragraph is between partial discharge point memory cell and decay memory paragraph.As a specific example, as shown in Fig. 2 first team
Row A is identical with second queue B structure and length is identical, and first queue A and second queue B are continuously deposited by several
The Coutinuous store of storage unit composition is interval, and wherein proximal points memory cell 201 is located at team's head of first queue A and second queue B,
Remote point memory cell 207 is located at the tail of the queue of first queue A and second queue B, and decay memory paragraph 206 is located at remote point and stores single
Before unit, after proximal points memory cell 201, joint memory paragraph 204 is stored partial discharge point memory cell 202 located at partial discharge point
Between unit 202 and decay memory paragraph 206.
Queue generation module 302 is split can accurately and effectively lead to according to the method described above for first queue and second queue
Cross the transmission means of the mode dummycable transmitted in both directions of queue.
Queue mobile module 303, for being stored in identical Wave data respectively in first queue and second queue, and leads to
The Wave data stored in default queue movement rule movement first queue and second queue is crossed, wherein, the partial discharge point
Memory cell is stored in the partial discharge waveform data, proximal points memory cell, remote point memory cell, partial discharge point memory cell with
And decay memory paragraph is stored in default initial waveform data respectively；
Queue mobile module 303 obtains the storage address of first queue and second queue respectively, then according to the storage
Address is stored in identical Wave data in first queue and second queue, wherein, queue mobile module 303 obtains the parameter
The partial discharge waveform data obtained in modulus block 301 is stored in the partial discharge point memory cell in first queue and second queue respectively,
Default initial waveform data are stored in proximal points memory cell, remote point storage list in first queue and second queue respectively
Unit, partial discharge point memory cell and decay memory paragraph.
Then external timing signal is accessed, when each clock signal (rising edge or high level) arrives, queue movement
Module 303 moves the Wave data stored in first queue and second queue by default movement rule, wherein the shifting
Dynamic rule at least includes the moving direction of the Wave data that the Wave data stored in first queue and second queue are stored
Conversely.
Waveform generating module 304, the spilling Wave data that head or second queue team head overflow is lined up for receiving first team,
And when the length of the spilling Wave data is more than preset length, by the spilling Wave data generation Partial Discharge Detection ripple
Shape.
If the Wave data stored in first queue is mobile toward team's head in each clock signal, every time mobile the
One queue team head occurs spilling, and now waveform generating module 304 receives the spilling Wave data that first team lines up head spilling.
If the Wave data stored in first queue is moved in each clock signal toward tail of the queue, every time mobile the
Two queue teams head occurs spilling, and now waveform generating module 304 receives the spilling Wave data that second queue team head overflows.
Waveform generating module 304 persistently receives the spilling Wave data, is more than in the length of the spilling Wave data
During preset length, waveform generating module 304 can stop incoming clock signal, and stop receiving the spilling Wave data, then
Waveform generating module 304 is according to the spilling Wave data generation Partial Discharge Detection waveform.
The present invention by parameter acquisition module 301 obtain user input cable physical parameter after, from store partial discharge ripple
Database in corresponding partial discharge waveform data is obtained according to the physical parameter；Simultaneously, queue generation module 302
Identical first queue and second queue are generated according to cable length, and according to cable physical parameter to the first queue and second
Queue is split；Then queue mobile module 303 is stored in identical Wave data respectively in first queue and second queue,
And the Wave data stored in first queue and second queue is moved by default queue movement rule；Last waveform generation
Module 304 receives first team and lines up the spilling Wave data that head or second queue team head overflow, and in the spilling Wave data
Length be more than preset length when, by it is described spilling Wave data generation Partial Discharge Detection waveform.The present invention is according to cable
Propagating characteristic, the mould by way of queue mobile module 303 moves the Wave data stored in first queue and second queue
Intend the transmission in the cable of partial discharge ripple, even if being simulated to partial discharge ripple with the mode of computer software, with portable value
Strong the characteristics of, can effectively reduce the time needed for being simulated by hardware mode and hardware cost such that it is able to improve cable and show
The simulation efficiency of field detection.
In one embodiment, said distal ends point memory cell is located at the tail of the queue of first queue and second queue, described to decline
Subtracting memory paragraph includes at least one decay memory cell, and the joint memory paragraph includes that joint is input into memory cell and joint output
Memory cell.
Further, the queue mobile module 303, can include following submodule：
Attenuation module, for the proximal points memory cell in first queue, partial discharge point memory cell, joint output to be stored
The Wave data stored in unit and decay memory cell moves a memory cell storage toward the tail of the queue of first queue, will
The Wave data stored in remote point memory cell, partial discharge point memory cell and decay memory cell in second queue is past
The mobile memory cell storage of team's head of second queue；
Wherein, it is each decay memory cell before Wave data is stored in Wave data to be deposited by default decay
Model carries out decay conversion；
When external clock signal (rising edge or high level) arrives, first, attenuation module extracts first queue respectively
With the waveform number stored in partial discharge point memory cell, joint output memory cell and decay memory cell in second queue
According to, and extract the Wave data that remote point memory cell is stored in proximal points memory cell and second queue in first queue.
The Wave data that attenuation module will be extracted in first queue moves a memory cell toward the tail of the queue of first queue
Storage, and the Wave data that will be extracted in second queue is toward the mobile memory cell storage of enemy of second queue, so that
Realize that the moving direction of the Wave data that the Wave data that is stored in first queue and second queue are stored is opposite.
Especially, it should be noted that, for each decay memory cell in decay memory paragraph, before Wave data is stored in
Wave data to be deposited is carried out decay conversion by attenuation module using default attenuation model, after decay is converted, is declined
Subtract module to be again stored in the Wave data carried out after decay conversion.
Joint module, for obtaining the waveform that first queue and second queue center tap input memory cell are stored respectively
Data, and the Wave data is carried out export respectively to first queue after reflection projection conversion using default Connector Model and
The joint output memory cell storage of second queue；
Joint module obtains the Wave data that first queue and second queue center tap input memory cell are stored respectively,
Then the Wave data is input into default Connector Model.
Joint module using the Connector Model to the Wave data carry out reflection projection conversion, then export respectively again to
The joint output memory cell storage of first queue and second queue.
First end point module, the first spilling Wave data for obtaining distal memory cell spilling in first queue, will
The first spilling Wave data is stored in the remote storage list of second queue after default end points model carries out reflection conversion
Unit；
The tail of the queue of first queue and second queue is located at due to distal memory cell, in the present embodiment, each clock letter
Number arrive when, in first queue distal memory cell will appear from overflow.
Now, first end point module obtains the first spilling Wave data of distal memory cell spilling in first queue, will
Described first overflows Wave data substitutes into default end points model, and Wave data is overflowed to described first by default end points model
Carry out reflection conversion.Then the first spilling Wave data after reflecting conversion is stored in second queue by first end point module
In distal memory cell.
Second endpoint module, the second spilling Wave data for obtaining proximal memory cell spilling in second queue, will
The near-end storage that the second spilling Wave data is stored in first queue after default end points model carries out reflection conversion is single
Unit.
Team's head of first queue and second queue is located at due to proximal memory cell, in the present embodiment, each clock letter
Number arrive when, in second queue proximal memory cell will appear from overflow.
Now, the second endpoint module obtains the second spilling Wave data of proximal memory cell spilling in second queue, will
Described second overflows Wave data substitutes into default end points model, and Wave data is overflowed to described second by default end points model
Carry out reflection conversion.Then the second spilling Wave data after reflecting conversion is stored in first queue by the second endpoint module
In proximal memory cell.
It should be noted that above-mentioned attenuation module, joint module, first end point module and the second endpoint module, external
Clock signal arrive when, should work operation simultaneously.
The Wave data that the Wave data and second queue that are stored in first queue stored is made by attenuation module
Moving direction using the Wave data that default Connector Model butt joint is input into memory cell by joint module conversely, simultaneously entered
Row reflection projection conversion, then first end point module and the second endpoint module are overflowed to distal memory cell in first queue respectively
First spilling Wave data and second queue in proximal memory cell overflow second spilling Wave data carry out reflection conversion,
The reflection for being capable of effectively the transmitted in both directions characteristic, the transmission and reflection characteristic of cable center tap and cable end points of dummycable is special
Property, so that ultimately generating Partial Discharge Detection waveform can more conform to the actual conditions of cable.
In one embodiment, the oscillation wave partial discharge detection waveform generating means can also include：
Noise laminating module, the noise waveform for obtaining preset length using default noise model, by the noise
Addition of waveforms generates the actually detected waveform of shelf depreciation to the Partial Discharge Detection waveform.
Noise laminating module receives the noise waveform of default noise model output, when the length of the noise waveform reach it is pre-
If during length, the noise waveform is superimposed to the Partial Discharge Detection waveform by noise laminating module, local putting is ultimately produced
The actually detected waveform of electricity.Wherein described noise waveform can be additive white Gaussian noise.
The noise waveform is superimposed to by the Partial Discharge Detection waveform by noise laminating module, so that most lifelong
Into the actually detected waveform of shelf depreciation with additive white Gaussian noise common in cable, make the actually detected ripple of the shelf depreciation
Shape further meets the actual noise feature of cable.
In one embodiment, above-mentioned queue mobile module 303, can also include following submodule：
Connector Model sets up module, for obtaining the Joint Parameter of user input and according to the Joint Parameter setting up joint
Model, wherein, the Joint Parameter includes the reflectance factor of positive transmission and the reflectance factor of transmission coefficient and reverse transfer
And transmission coefficient；
Connector Model sets up module and obtains the Joint Parameter that user is input into from inputting interface, and the Joint Parameter at least includes
The reflectance factor of forward direction transmission and the reflectance factor and transmission coefficient of transmission coefficient and reverse transfer.Then Connector Model is set up
The Joint Parameter is input into default Two-port netwerk model by module, to set up Connector Model.
The Connector Model is two-port network, and its formula is,
Wherein
Y1For the joint of second queue exports memory cell, Y2For the joint of first queue exports memory cell, X1It is first
The joint input memory cell of queue, X2For the joint of second queue is input into memory cell, t11、t12Respectively positive transmission reflection
Coefficient and transmission coefficient, t21、t22Respectively reverse transfer reflectance factor and transmission coefficient.
Module is set up by Connector Model to obtain the Joint Parameter of user input and according to the Joint Parameter set up joint
Model so that user can set corresponding Joint Parameter according to the actual variance of cable, it is ensured that Connector Model can be simulated
The actual transmission and reflection characteristic of joint.
In one embodiment, above-mentioned queue mobile module 303, can also include following submodule：
Attenuation model sets up module, the cable attenuation coefficient for obtaining user input, according to the cable attenuation coefficient
Set up attenuation model；
Attenuation model sets up module and obtains the cable attenuation coefficient that user is input into from inputting interface, and then the cable declines
Subtract during coefficient substitutes into default ssystem transfer function, to generate attenuation model.
Wherein, the formula of the attenuation model is,
| Y (ω) |=| H (ω) | | X (ω) |, wherein, | Y (ω) | is the spectrum amplitude of Wave data after decay conversion, | H
(ω) | it is cable attenuation coefficient, | X (ω) | is the spectrum amplitude of Wave data after decay conversion.
Set up module and obtain the attenuation coefficient of user input and set up according to the attenuation coefficient by attenuation model and decay
Model so that user can be according to the corresponding attenuation coefficient of actual attenuation property settings of cable, it is ensured that attenuation model can
The actual attenuation characteristic of dummycable.
Embodiment described above only expresses several embodiments of the invention, and its description is more specific and detailed, but simultaneously
Therefore the limitation to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for one of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention
Shield scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of oscillation wave partial discharge detection waveform generation method, it is characterised in that including step：
The cable physical parameter of user input is obtained, and obtains the partial discharge waveform number corresponding with the cable physical parameter
According to wherein the cable physical parameter includes cable length, joint to test point distance and partial discharge point to test point distance；
According to the cable length generate identical first queue and second queue, and according to the joint to test point distance with
And partial discharge point delimited proximal points memory cell, remote point and deposited respectively to test point distance in the first queue and second queue
Storage unit, partial discharge point memory cell, joint memory paragraph and decay memory paragraph, wherein the proximal points memory cell is located at first
Team's head position of queue and second queue；
It is stored in identical Wave data respectively in first queue and second queue, and is moved by default queue movement rule
The Wave data stored in first queue and second queue, wherein partial discharge point memory cell is stored in the partial discharge waveform
Data, proximal points memory cell, remote point memory cell, partial discharge point memory cell and decay memory paragraph are stored in default respectively
Initial waveform data；
Receive first team and line up the spilling Wave data that head or second queue team head overflow, and in the length of the spilling Wave data
When degree is more than preset length, by the spilling Wave data generation Partial Discharge Detection waveform.
2. oscillation wave partial discharge detection waveform generation method according to claim 1, it is characterised in that the remote point
Memory cell is located at the tail of the queue of first queue and second queue, and the decay memory paragraph includes at least one decay memory cell,
The joint memory paragraph includes that joint is input into memory cell and joint output memory cell；Described movement by default queue is advised
The step of then moving the data storage in first queue and second queue, including step：
By the proximal points memory cell in first queue, partial discharge point memory cell, joint output memory cell and decay storage
The Wave data stored in unit moves a memory cell storage toward the tail of the queue of first queue, by the distal end in second queue
The Wave data stored in point memory cell, partial discharge point memory cell and decay memory cell is moved toward team's head of second queue
Dynamic memory cell storage, wherein, each decay memory cell is passed through before Wave data is stored in Wave data to be deposited
Crossing default attenuation model carries out decay conversion；
The Wave data that first queue and second queue center tap input memory cell are stored is obtained respectively, and using default
Connector Model exports defeated to the joint of first queue and second queue respectively after reflection projection conversion is carried out to the Wave data
Go out memory cell storage；
The first spilling Wave data of distal memory cell spilling in first queue is obtained, Wave data warp is overflowed by described first
Crossing default end points model be stored in after reflection conversion the distal memory cell of second queue；
The second spilling Wave data of proximal memory cell spilling in second queue is obtained, Wave data warp is overflowed by described second
Crossing default end points model be stored in after reflection conversion the proximal memory cell of first queue.
3. oscillation wave partial discharge detection waveform generation method according to claim 1, it is characterised in that also including step
Suddenly：
The noise waveform of preset length is obtained using default noise model, the noise waveform is superimposed to the shelf depreciation
Detection waveform, generates the actually detected waveform of shelf depreciation.
4. oscillation wave partial discharge detection waveform generation method according to claim 2, it is characterised in that also including step
Suddenly：Obtain the Joint Parameter of user input and set up Connector Model according to the Joint Parameter, wherein, the Joint Parameter includes
The reflectance factor of forward direction transmission and the reflectance factor and transmission coefficient of transmission coefficient and reverse transfer, the Connector Model is two
Port network, its formula is,
Wherein
Y1For the joint of second queue exports memory cell, Y2For the joint of first queue exports memory cell, X1It is first queue
Joint input memory cell, X2For the joint of second queue is input into memory cell, t11、t12Respectively positive transmission reflectance factor
And transmission coefficient, t21、t22Respectively reverse transfer reflectance factor and transmission coefficient.
5. oscillation wave partial discharge detection waveform generation method according to claim 2, it is characterised in that also including step
Suddenly：The cable attenuation coefficient of user input is obtained, attenuation model is set up according to the cable attenuation coefficient, wherein, the decay
The formula of model is：
| Y (ω) |=| H (ω) | | X (ω) |, wherein, | Y (ω) | is the spectrum amplitude of Wave data after decay conversion, | H (ω)
| it is cable attenuation coefficient, | X (ω) | is the spectrum amplitude of Wave data after decay conversion.
6. a kind of oscillation wave partial discharge detection waveform generating means, it is characterised in that including：
Parameter acquisition module, the cable physical parameter for obtaining user input, and obtain relative with the cable physical parameter
The partial discharge waveform data answered, wherein the cable physical parameter includes cable length, joint to test point distance and partial discharge
Put to test point distance；
Queue generation module, for generating identical first queue and second queue according to the cable length, and according to described
Joint to test point distance and partial discharge point to test point distance delimit near-end respectively in the first queue and second queue
Point memory cell, remote point memory cell, partial discharge point memory cell, joint memory paragraph and decay memory paragraph, wherein described near
End points memory cell is located at team's head position of first queue and second queue；
Queue mobile module, for being stored in identical Wave data respectively in first queue and second queue, and by default
Queue movement rule movement first queue and second queue in the Wave data that is stored, wherein, the partial discharge point storage is single
Unit is stored in the partial discharge waveform data, proximal points memory cell, remote point memory cell, partial discharge point memory cell and decay
Memory paragraph is stored in default initial waveform data respectively
Waveform generating module, the spilling Wave data that head or second queue team head overflow is lined up for receiving first team, and in institute
When stating the length for overflowing Wave data more than preset length, by the spilling Wave data generation Partial Discharge Detection waveform.
7. oscillation wave partial discharge detection waveform generating means according to claim 6, it is characterised in that the remote point
Memory cell is located at the tail of the queue of first queue and second queue, and the decay memory paragraph includes at least one decay memory cell,
The joint memory paragraph includes that joint is input into memory cell and joint output memory cell；The queue mobile module, including with
Lower submodule：
Attenuation module, for the proximal points memory cell in first queue, partial discharge point memory cell, joint to be exported into memory cell
And the Wave data stored in decay memory cell moves a memory cell storage toward the tail of the queue of first queue, by second
The Wave data stored in remote point memory cell, partial discharge point memory cell in queue and decay memory cell is toward second
The mobile memory cell storage of team's head of queue, wherein, each decay memory cell is before Wave data is stored in to be deposited
Wave data carry out decay conversion by default attenuation model；
Joint module, for obtaining the waveform number that first queue and second queue center tap input memory cell are stored respectively
According to, and export respectively to first queue and the after reflection projection conversion is carried out to the Wave data using default Connector Model
The joint output memory cell storage of two queues；
First end point module, the first spilling Wave data for obtaining distal memory cell spilling in first queue, will be described
First spilling Wave data is stored in the distal memory cell of second queue after default end points model carries out reflection conversion；
Second endpoint module, the second spilling Wave data for obtaining proximal memory cell spilling in second queue, will be described
Second spilling Wave data is stored in the proximal memory cell of first queue after default end points model carries out reflection conversion.
8. oscillation wave partial discharge detection waveform generating means according to claim 6, it is characterised in that also include：
Noise laminating module, the noise waveform for obtaining preset length using default noise model, by the noise waveform
The Partial Discharge Detection waveform is superimposed to, the actually detected waveform of shelf depreciation is generated.
9. oscillation wave partial discharge detection waveform generating means according to claim 7, it is characterised in that also include：
Connector Model sets up module, for obtaining the Joint Parameter of user input and according to the Joint Parameter setting up joint mould
Type, wherein, the Joint Parameter include the reflectance factor of positive transmission and the reflectance factor of transmission coefficient and reverse transfer and
Transmission coefficient, the Connector Model is two-port network, and its formula is,
Wherein
Y1For the joint of second queue exports memory cell, Y2For the joint of first queue exports memory cell, X1It is first queue
Joint input memory cell, X2For the joint of second queue is input into memory cell, t11、t12Respectively positive transmission reflectance factor
And transmission coefficient, t21、t22Respectively reverse transfer reflectance factor and transmission coefficient.
10. oscillation wave partial discharge detection waveform generating means according to claim 7, it is characterised in that also include：
Attenuation model sets up module, the cable attenuation coefficient for obtaining user input, is set up according to the cable attenuation coefficient
Attenuation model, wherein, the formula of the attenuation model is,
| Y (ω) |=| H (ω) | | X (ω) |, wherein, | Y (ω) | is the spectrum amplitude of Wave data after decay conversion, | H (ω)
| it is cable attenuation coefficient, | X (ω) | is the spectrum amplitude of Wave data after decay conversion.
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