CN106501695B - A kind of high-tension cable local discharge signal acquisition processing system and method - Google Patents
A kind of high-tension cable local discharge signal acquisition processing system and method Download PDFInfo
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- CN106501695B CN106501695B CN201710009343.8A CN201710009343A CN106501695B CN 106501695 B CN106501695 B CN 106501695B CN 201710009343 A CN201710009343 A CN 201710009343A CN 106501695 B CN106501695 B CN 106501695B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
- G01R31/1272—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of cable, line or wire insulation, e.g. using partial discharge measurements
Abstract
The present invention discloses a kind of high-tension cable local discharge signal acquisition processing system and method, the system comprises: local discharge signal sensor, synchronous signal sensor, AD capture card, digital sampling and processing, data transmission blocks, host computer display module and DSP module.By using the AD capture card with high speed acquisition characteristic, improve the accuracy and precision of local discharge signal acquisition, it can guarantee the real-time of signal acquisition, DSP module is sent the data to by digital sampling and processing and data transmission blocks simultaneously, reduce the distortion in signals transmission, the accuracy and efficiency of local discharge signal acquisition process can be effectively improved.In addition, the high-tension cable local discharge signal acquiring and processing method that the embodiment of the present invention provides only is analyzed and processed a variable of data count by logical algorithm, thus error rate is extremely low, is conducive to carry out Accurate Analysis to local discharge signal.
Description
Technical field
The present invention relates to technical field of power systems more particularly to a kind of high-tension cable local discharge signal acquisition process systems
System and method.
Background technique
It is carried out in insulation manufacturing process to high-tension cable, due to factory's manufacturing process etc., it is difficult to avoid some miscellaneous
Matter remains in inside insulating layer.In high-tension cable operational process, due to the aging and decomposition of insulating layer, can generate some has
There is very big difference, apply outside in the foreign matter of dispersibility, the conductance and dielectric constant and dielectric of these impurity and foreign matter
Under the action of voltage, the field strength at position can be significantly hotter than the field strength at position around where these impurity and foreign matter, apply electricity with outer
The raising of pressure, when the field strength at position has been more than the ionization field strength of cable at this where impurity and foreign matter, cable will be produced at this
Raw ionic discharge, i.e. shelf depreciation.Cable in shelf depreciation is easy to be ignored by service personnel, in order to guarantee the matter of cable
Amount and safety, need staff find in time cable there are the problem of and failure, and quickly take effective measures progress
Processing.
In the prior art, the method for high-tension cable local discharge signal acquisition process is: using the USB number of low rate
It is acquired according to output signal of the capture card to the local discharge signal sensor being mounted on high-tension cable, then will collect
Data be sent to local discharge signal data processing software and be acquired, analyze and save.
However, conventionally, as the signal frequency of local discharge signal sensor output is much higher than low rate USB
It is more according to the loss of valid data when acquisition to lead to local discharge signal for data collecting card, while to the acquisition equipment of the rear end USB
Configuration requirement it is very high, reduce the accuracy and efficiency of local discharge signal acquisition process, affect the safety and stability of power grid
Operation.
Summary of the invention
To overcome the problems in correlation technique, the present invention provides a kind of high-tension cable local discharge signal acquisition process
System and method.
According to a first aspect of the embodiments of the present invention, a kind of high-tension cable local discharge signal acquisition processing system is provided,
The system comprises:
Local discharge signal sensor, synchronous signal sensor, AD capture card, digital sampling and processing, data are sent
Module, host computer display module and DSP module, wherein
The local discharge signal sensor and synchronous signal sensor are connect with the AD capture card respectively, the AD
Capture card is connect with the signal input part of the digital sampling and processing, the signal output end of the digital sampling and processing
The data transmission blocks are connected to, the data transmission blocks are connected to the DSP module；The DSP module and it is described on
Position machine display module connection.
Optionally, the digital sampling and processing includes: shelf depreciation triggering and amplitude processing module, Phase Processing mould
Block, amplitude data memory module, discharge signal data memory module, phase data memory module, Data Integration processing module with
And asynchronous data memory module, wherein
The shelf depreciation triggering and amplitude processing module are respectively connected to the phase processing module, amplitude data storage
Module and discharge signal data memory module；The AD capture card is respectively connected to the shelf depreciation triggering and amplitude processing
Module, phase processing module；The phase processing module is connected to the phase data memory module；The amplitude data storage
Module, discharge signal data memory module and phase data memory module are respectively connected to the Data Integration processing module, institute
It states Data Integration processing module and is connected to the asynchronous data memory module；The asynchronous data memory module is connected to the number
According to sending module.
According to a second aspect of the embodiments of the present invention, a kind of high-tension cable local discharge signal acquiring and processing method is provided,
The described method includes:
Obtain local discharge signal data and synchronization signal data；
The local discharge signal data are compared with given threshold；
If the local discharge signal data are less than the given threshold, the local discharge signal number is reacquired
According to and synchronization signal data；
If the local discharge signal data are greater than the given threshold, partial discharge phase is obtained according to synchronization signal data
Position simultaneously saves the local discharge signal data and partial discharge phase simultaneously；
The local discharge signal data and synchronization signal data are obtained again；
The local discharge signal data obtained again are compared with the given threshold；
If the local discharge signal data are greater than the given threshold, according to the synchronization signal data obtained again
It obtains partial discharge phase and saves the local discharge signal data and partial discharge phase obtained again simultaneously；
If the local discharge signal data are less than the given threshold, by the local discharge signal number of preservation
Accordingly and partial discharge phase is handled, and obtains data flow；
The data flow is subjected to asynchronous storage processing；
By asynchronous storage, treated that the data flow carries out Digital Signal Processing；
The data flow after Digital Signal Processing is shown by host computer display module.
Optionally, the working characteristics that the given threshold is sampled according to the data characteristics and AD of local discharge signal is true
It is fixed.
Optionally, if the local discharge signal data are greater than the given threshold, according to synchronization signal number
According to acquisition partial discharge phase, the local discharge signal data and partial discharge phase are simultaneously saved simultaneously, comprising:
If the local discharge signal data are greater than the given threshold, by shelf depreciation triggering and amplitude
It manages module and sends phase calculation enable signal to the phase processing module；
After shelf depreciation triggering and amplitude processing module have sent phase calculation enable signal, by the width of local discharge signal
Value storage is stored to amplitude data memory module, local discharge signal data to discharge signal data memory module, wherein described
Local discharge signal data include the waveform and frequency of local discharge signal；
Phase processing module obtains partial discharge phase after receiving phase calculation enable signal, according to synchronization signal data,
And the partial discharge phase is stored to phase data memory module.
Optionally, the amplitude by local discharge signal, which is stored to amplitude data memory module, includes:
The amplitude of the local discharge signal is compared with the amplitude for being stored in amplitude data memory module, and by institute
It states the amplitude of local discharge signal and the maximum value being stored in the amplitude of amplitude data memory module is saved in amplitude data and deposits
Store up module.
Optionally, if the local discharge signal data are less than the given threshold, by the office of preservation
Portion's discharge signal data and partial discharge phase are handled, and data flow is obtained, comprising:
Shelf depreciation triggering and amplitude processing module and phase processing module send part to Data Integration processing module and put
Establish beginning enable signal by cable；
Data Integration processing module receives after shelf depreciation starts enable signal, and it is enabled to issue frame head input, generates and uses
Data frame head data in Identification Data stream initial position；
Data Integration processing module successively issues local discharge signal data input enable signal, amplitude input enable signal
And phase input is enabled, saves the electric discharge of local discharge signal data, local discharge signal amplitude and partial discharge phase data
Signal data memory module, amplitude data memory module and phase data memory module are defeated to Data Integration processing module respectively
Enter local discharge signal data, local discharge signal amplitude and partial discharge phase data；
Data Integration processing module is by the local discharge signal data, local discharge signal amplitude and partial discharge phase data
It is integrated into a complete data flow.
It is optionally, described that by asynchronous storage, treated that the data flow carries out Digital Signal Processing, comprising:
By asynchronous storage, treated that the data flow carries out unpacks and caching process.
Optionally, the display result of the host computer display module is treated local discharge signal pulse data, office
Portion's discharge signal amplitude and partial discharge phase data.
The high-tension cable local discharge signal acquisition processing system that the embodiment of the present invention provides includes: local discharge signal
Sensor, synchronous signal sensor, AD capture card, digital sampling and processing, data transmission blocks, host computer display module with
And DSP module.By using the AD capture card with high speed acquisition characteristic, improve local discharge signal acquisition accuracy and
Precision can guarantee the real-time of signal acquisition, while be sent out data by digital sampling and processing and data transmission blocks
DSP module is given, the distortion in signals transmission is reduced, the accurate of local discharge signal acquisition process can be effectively improved
Degree and efficiency.
In addition, the high-tension cable local discharge signal acquiring and processing method that the embodiment of the present invention provides, is calculated by logic
Method is only analyzed and processed a variable of data count, thus error rate is extremely low, is conducive to carry out local discharge signal
Accurate Analysis.
It should be understood that above general description and following detailed description be only it is exemplary and explanatory, not
It can the limitation present invention.
Detailed description of the invention
The drawings herein are incorporated into the specification and forms part of this specification, and shows and meets implementation of the invention
Example, and be used to explain the principle of the present invention together with specification.
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, for those of ordinary skill in the art
Speech, without any creative labor, is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of knot of each module of high-tension cable local discharge signal acquisition processing system provided in an embodiment of the present invention
Structure schematic diagram；
Fig. 2 is a kind of data acquisition of high-tension cable local discharge signal acquisition processing system provided in an embodiment of the present invention
The structural schematic diagram of processing module；
Fig. 3 is a kind of process signal of high-tension cable local discharge signal acquiring and processing method provided in an embodiment of the present invention
Figure；
Symbol description:
1- local discharge signal sensor, 2- synchronous signal sensor, 3-AD capture card, 41- digital sampling and processing,
42- data transmission blocks, the triggering of 411- shelf depreciation and amplitude processing module, 412- phase processing module, 413- amplitude data
Memory module, 414- discharge signal data memory module, 415- phase data memory module, 416- Data Integration processing module,
417- asynchronous data memory module, 5- host computer display module, 6-DSP processing module.
Specific embodiment
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistented with the present invention.On the contrary, they be only with it is such as appended
The example of device and method being described in detail in claims, some aspects of the invention are consistent.
Fig. 1 is a kind of knot of each module of high-tension cable local discharge signal acquisition processing system provided in an embodiment of the present invention
Structure schematic diagram, as shown in Figure 1, the high-tension cable local discharge signal acquisition processing system includes: local discharge signal sensing
Device 1, synchronous signal sensor 2, AD capture card 3, digital sampling and processing 41, data transmission blocks 42, host computer show mould
Block 5 and DSP module 6.
Local discharge signal sensor 1 and synchronous signal sensor 2 are connect with AD capture card 3 respectively, AD capture card 3 with
The signal input part of digital sampling and processing 41 connects, and the signal output end of digital sampling and processing 41 is connected to data hair
Module 42 is sent, data transmission blocks 42 are connected to DSP module 6；DSP module 6 is connect with host computer display module 5, wherein part
Discharge signal sensor 1 obtains the local discharge signal on high-tension cable, synchronous signal sensor 2 with the method for HFCT coupling
The synchronization signal of high voltage power supply is obtained after decaying using high-voltage probe to the high voltage power supply for high-tension cable.
Fig. 2 is a kind of data acquisition of high-tension cable local discharge signal acquisition processing system provided in an embodiment of the present invention
The structural schematic diagram of processing module, as shown in Fig. 2,
Digital sampling and processing 41 include: shelf depreciation triggering and amplitude processing module 411, phase processing module 412,
Amplitude data memory module 413, discharge signal data memory module 414, phase data memory module 415, Data Integration processing
Module 416 and asynchronous data memory module 417, wherein
Shelf depreciation triggering and amplitude processing module 411 are respectively connected to phase processing module 412, amplitude data storage mould
Block 413 and discharge signal data memory module 414；AD capture card 3 is respectively connected to shelf depreciation triggering and amplitude handles mould
Block 411, phase processing module 412；Phase processing module 412 is connected to phase data memory module 415；Amplitude data stores mould
Block 413, discharge signal data memory module 414 and phase data memory module 415 are respectively connected to Data Integration processing module
416, Data Integration processing module 416 is connected to asynchronous data memory module 417；Asynchronous data memory module 417 is connected to number
According to sending module 42.
Local discharge signal sensor 1, synchronous signal sensor 2, AD capture card 3, digital sampling and processing 41, data
Sending module 42, host computer display module 5 and DSP module 6 are integrated on on-site programmable gate array FPGA circuit board.
The treatment process of local discharge signal and synchronization signal is as follows in digital sampling and processing 41:
In shelf depreciation triggering and amplitude processing module 411, sampled according to the data characteristics of local discharge signal and AD
Working characteristics, setting one reasonable threshold value be compared with local discharge signal data collected in AD capture card 3, when
When the local discharge signal data that AD capture card 3 acquires are greater than threshold value, just think to have occurred shelf depreciation, shelf depreciation triggering and
Amplitude processing module 411 sends shelf depreciation to AD capture card 3 and triggers enable signal, is greater than threshold value from local discharge signal data
At the time of to AD capture card 3 acquire local discharge signal data be less than threshold value next time at the time of, AD capture card 3 is collected
Signal data is exactly the Partial Discharge that a partial discharge phenomenon is recorded, and later stores the amplitude of local discharge signal
To amplitude data memory module 413, local discharge signal data storage to discharge signal data memory module 414.
A/D module acquisition local discharge signal data be greater than threshold value, shelf depreciation triggering and amplitude processing module 411 to
After AD capture card 3 sends electric discharge triggering enable signal, and a phase calculation enable signal is issued to phase processing module 412,
Wherein, the amplitude storage of local discharge signal is arrived using adjacent comparison method in shelf depreciation triggering and amplitude processing module 411
In amplitude data memory module 413, i.e., the amplitude of current time collected local discharge signal is collected with previous moment
Or the amplitude of local discharge signal that is stored in amplitude data memory module 413 make comparisons, retain maximum shelf depreciation
The amplitude of signal, and be stored in amplitude data memory module 413, after a Partial Discharge Data acquisition, it can calculate
The peak value of the secondary local discharge signal.
In phase processing module 412, in the phase calculation for receiving shelf depreciation triggering and the transmission of amplitude processing module 411
After enable signal, partial discharge phase calculation, specific steps: each are carried out according to the collected synchronization signal data of AD capture card 3
Counter when synchronous signal cycle starts in phase processing module 412 is counted, when the clock signal in FPGA board
Rising edge arrival hour counter add one, the count value of counter is saved when next synchronous signal cycle starts, and is carried out
The counting of next cycle, and the count value in a new period replaces the count value of previous cycle to work as part as cycle count value
After electric discharge triggering and the sending phase lookup enable signal of amplitude processing module 411 are enabled, phase processing module 412 records this moment
Count value in corresponding synchronous signal cycle, as phase count.It is hereby achieved that two count values, respectively represent the period
Count value and discharging time electric discharge count value, then calculate the phase that synchronization signal is corresponded to when local discharge signal occurs, meter
It is as follows to calculate formula:
Data Integration processing module 416, according to shelf depreciation triggering and amplitude processing module 411 and phase processing module
412 shelf depreciations issued start enable signal and generate multiple selector data input control timing, and Data Integration first is handled
Module 416 issues frame head input and enables, and generates the data frame head data for being used for Identification Data stream initial position.Then Data Integration
Processing module 416 issues local discharge signal data and inputs enable signal, and the discharge signal data for depositing local discharge signal are deposited
Store up module 414 to Data Integration processing module 416 input local discharge signal data, finally, Data Integration processing module 416 according to
Secondary sending amplitude input enable signal and phase input are enabled, save local discharge signal amplitude and partial discharge phase data
Amplitude data memory module 413 and phase data memory module 415 input shelf depreciation to Data Integration processing module respectively
Signal amplitude and partial discharge phase data, Data Integration processing module 416 believe the local discharge signal data, shelf depreciation
Number amplitude and partial discharge phase data are integrated into a complete data flow, in order to which junior's data transmission interface carries out data biography
It is defeated.
Data transmission blocks 42, for completing the transmission of the data under different clock-domains.
Read-write clock is (reading clock takes the data transfer clock that DSP is provided, when writing under the Clock of different clock-domains
What clock was taken is the clock of FPGA acquisition data) one asynchronous memory module 417 of example；In order to reduce due to different clock-domains
The counting change of the register of lower storage address will appear metastable state, gray encoding be used on address code, i.e., every time
As long as location, which changes, to be had and the value of a bit register changes, it not only ensure that the reliability of data transmission also ensures in this way
The stability of module operation.
By asynchronous memory module 417 treated data flow, by the data transmission interface on FPGA integrated circuit board,
DSP processing module 6 is transferred data to, after DSP processing module 6 receives data, by unpacking and passing through hundred after caching process
Million network interfaces transmit data to the data processing port of host computer display module 5.
Host computer display module 5 carries out data to get the pulse for showing collected local discharge signal after unpacking processing ready
Data, amplitude and phase data.
Fig. 3 is a kind of process signal of high-tension cable local discharge signal acquiring and processing method provided in an embodiment of the present invention
Figure, as described in Figure 3, which comprises
Step S110 obtains local discharge signal data and synchronization signal data.
The local discharge signal data are compared by step S120 with given threshold.Wherein, the given threshold root
It is determined according to the working characteristics that the data characteristics and AD of local discharge signal sample.
If the local discharge signal data are less than the given threshold, the local discharge signal number is reacquired
According to and synchronization signal data.
If the local discharge signal data are greater than the given threshold, step S130 is carried out, according to synchronization signal
Data acquisition partial discharge phase simultaneously saves the local discharge signal data and partial discharge phase simultaneously, and the specific method is as follows:
If the local discharge signal data are greater than the given threshold, mould is handled by shelf depreciation triggering and amplitude
Block sends phase calculation enable signal to the phase processing module；
After shelf depreciation triggering and amplitude processing module have sent phase calculation enable signal, by the local discharge signal
Amplitude be compared with the amplitude for being stored in amplitude data memory module, and by the amplitude and preservation of the local discharge signal
Maximum value in the amplitude of amplitude data memory module is saved in amplitude data memory module, the storage of local discharge signal data
To discharge signal data memory module, wherein the local discharge signal data include the waveform and frequency of local discharge signal
Rate；
Phase processing module obtains partial discharge phase after receiving phase calculation enable signal, according to synchronization signal data,
And the partial discharge phase is stored to phase data memory module.
Step S140 obtains the local discharge signal data and synchronization signal data again.
The local discharge signal data obtained again are compared by step S150 with the given threshold.
If the local discharge signal data are greater than the given threshold, according to the synchronization signal data obtained again
It obtains partial discharge phase and saves the local discharge signal data and partial discharge phase obtained again simultaneously.
If the local discharge signal data are less than the given threshold, step S160 is carried out, it will be described in preservation
Local discharge signal data and partial discharge phase are handled, and obtain data flow, the specific method is as follows:
Shelf depreciation triggering and amplitude processing module and phase processing module send part to Data Integration processing module and put
Establish beginning enable signal by cable；
Data Integration processing module receives after shelf depreciation starts enable signal, and it is enabled to issue frame head input, generates and uses
Data frame head data in Identification Data stream initial position；
Data Integration processing module successively issues local discharge signal data input enable signal, amplitude input enable signal
And phase input is enabled, saves the electric discharge of local discharge signal data, local discharge signal amplitude and partial discharge phase data
Signal data memory module, amplitude data memory module and phase data memory module are defeated to Data Integration processing module respectively
Enter local discharge signal data, local discharge signal amplitude and partial discharge phase data；
Data Integration processing module is by the local discharge signal data, local discharge signal amplitude and partial discharge phase data
It is integrated into a complete data flow.
The data flow is carried out asynchronous storage processing by step S170.
Step S180, by asynchronous storage, treated that the data flow carries out Digital Signal Processing, wherein at asynchronous storage
Reason includes data flow unpacking and caching process.
Step S190 shows the data flow after Digital Signal Processing by host computer display module, wherein
The display result of the host computer display module be treated local discharge signal pulse data, local discharge signal amplitude and
Partial discharge phase data.
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or equipment for including a series of elements not only includes those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or equipment institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including institute
State in the process, method, article or equipment of element that there is also other identical elements.
Those skilled in the art will readily occur to of the invention its after considering specification and the disclosure invented here of practice
Its embodiment.This application is intended to cover any variations, uses, or adaptations of the invention, these modifications, purposes or
Person's adaptive change follows general principle of the invention and including the undocumented common knowledge in the art of the present invention
Or conventional techniques.The description and examples are only to be considered as illustrative, and true scope and spirit of the invention are by following
Claim is pointed out.
It should be understood that the present invention is not limited to the precise structure already described above and shown in the accompanying drawings, and
And various modifications and changes may be made without departing from the scope thereof.The scope of the present invention is limited only by the attached claims.
Claims (6)
1. a kind of high-tension cable local discharge signal acquiring and processing method, based at a kind of high-tension cable local discharge signal acquisition
Reason system, the system comprises: local discharge signal sensor (1), synchronous signal sensor (2), AD capture card (3), data
Acquisition processing module (41), data transmission blocks (42), host computer display module (5) and DSP module (6), wherein the office
Portion's discharge signal sensor (1) and synchronous signal sensor (2) are connect with the AD capture card (3) respectively, the AD acquisition
Card (3) is connect with the signal input part of the digital sampling and processing (41), the letter of the digital sampling and processing (41)
Number output end is connected to the data transmission blocks (42), and the data transmission blocks (42) are connected to the DSP module (6)；
The DSP module (6) connect with the host computer display module (5)；The digital sampling and processing (41) includes: that part is put
Electricity triggering and amplitude processing module (411), phase processing module (412), amplitude data memory module (413), discharge signal number
Mould is stored according to memory module (414), phase data memory module (415), Data Integration processing module (416) and asynchronous data
Block (417), wherein the shelf depreciation triggering and amplitude processing module (411) are respectively connected to the phase processing module
(412), amplitude data memory module (413) and discharge signal data memory module (414)；The AD capture card (3) is respectively
It is connected to the shelf depreciation triggering and amplitude processing module (411), phase processing module (412)；The phase processing module
(412) it is connected to the phase data memory module (415)；The amplitude data memory module (413), discharge signal data are deposited
Storage module (414) and phase data memory module (415) are respectively connected to the Data Integration processing module (416), the number
The asynchronous data memory module (417) is connected to according to processing module (416) is integrated；The asynchronous data memory module (417)
It is connected to the data transmission blocks (42)；
It is characterized in that, which comprises
Obtain local discharge signal data and synchronization signal data；
The local discharge signal data are compared with given threshold；
If the local discharge signal data be less than the given threshold, reacquire the local discharge signal data and
Synchronization signal data；
If the local discharge signal data be greater than the given threshold, according to synchronization signal data obtain partial discharge phase,
And the local discharge signal data and partial discharge phase are saved simultaneously；
The local discharge signal data and synchronization signal data are obtained again；
The local discharge signal data obtained again are compared with the given threshold；
If the local discharge signal data are greater than the given threshold, obtained according to the synchronization signal data obtained again
Partial discharge phase simultaneously saves the local discharge signal data and partial discharge phase obtained again simultaneously；
If the local discharge signal data be less than the given threshold, by the local discharge signal data of preservation with
And partial discharge phase is handled, and data flow is obtained；
The data flow is subjected to asynchronous storage processing；
By asynchronous storage, treated that the data flow carries out Digital Signal Processing；
The data flow after Digital Signal Processing is shown by host computer display module.
2. high-tension cable local discharge signal acquiring and processing method according to claim 1, which is characterized in that if described
The local discharge signal data are greater than the given threshold, then obtain partial discharge phase according to synchronization signal data and protect simultaneously
Deposit the local discharge signal data and partial discharge phase, comprising:
If the local discharge signal data are greater than the given threshold, mould is handled by shelf depreciation triggering and amplitude
Block sends phase calculation enable signal to the phase processing module；
After shelf depreciation triggering and amplitude processing module have sent phase calculation enable signal, the amplitude of local discharge signal is deposited
Store up amplitude data memory module, local discharge signal data storage to discharge signal data memory module, wherein the part
Discharge signal data include the waveform and frequency of local discharge signal；
Phase processing module obtains partial discharge phase after receiving phase calculation enable signal, according to synchronization signal data, and will
The partial discharge phase is stored to phase data memory module.
3. high-tension cable local discharge signal acquiring and processing method according to claim 2, which is characterized in that described by office
The amplitude of portion's discharge signal is stored to amplitude data memory module
The amplitude of the local discharge signal is compared with the amplitude for being stored in amplitude data memory module, and by the office
The amplitude of portion's discharge signal and the maximum value being stored in the amplitude of amplitude data memory module are saved in amplitude data storage mould
Block.
4. high-tension cable local discharge signal acquiring and processing method according to claim 1, which is characterized in that if described
The local discharge signal data are less than the given threshold, then by the local discharge signal data and partial discharge phase of preservation
Position is handled, and data flow is obtained, comprising:
Shelf depreciation triggering and amplitude processing module and phase processing module send shelf depreciation to Data Integration processing module and open
Beginning enable signal；
Data Integration processing module receives after shelf depreciation starts enable signal, and it is enabled to issue frame head input, generates for distinguishing
Know the data frame head data of data flow initial position；
Data Integration processing module successively issue local discharge signal data input enable signal, amplitude input enable signal and
Phase input is enabled, saves the discharge signal of local discharge signal data, local discharge signal amplitude and partial discharge phase data
Data memory module, amplitude data memory module and phase data memory module are respectively to Data Integration processing module input office
Portion's discharge signal data, local discharge signal amplitude and partial discharge phase data；
Data Integration processing module integrates the local discharge signal data, local discharge signal amplitude and partial discharge phase data
At a complete data flow.
5. high-tension cable local discharge signal acquiring and processing method according to claim 1, which is characterized in that it is described will be different
Treated that the data flow carries out Digital Signal Processing for step storage, comprising:
By asynchronous storage, treated that the data flow carries out unpacks and caching process.
6. high-tension cable local discharge signal acquiring and processing method according to claim 1, which is characterized in that described upper
The display result of machine display module is treated local discharge signal pulse data, local discharge signal amplitude and partial discharge phase
Data.
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| CN108459247A (en) * | 2018-03-19 | 2018-08-28 | 浙江图维科技股份有限公司 | A kind of high-voltage cable joint partial discharge detection position indicator and partial discharge detection localization method |
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