CN205786925U - A kind of Zinc-Oxide Arrester on-line monitoring and the diagnostic equipment - Google Patents
A kind of Zinc-Oxide Arrester on-line monitoring and the diagnostic equipment Download PDFInfo
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- CN205786925U CN205786925U CN201620680730.5U CN201620680730U CN205786925U CN 205786925 U CN205786925 U CN 205786925U CN 201620680730 U CN201620680730 U CN 201620680730U CN 205786925 U CN205786925 U CN 205786925U
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- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 title claims abstract description 92
- 229960001296 zinc oxide Drugs 0.000 title claims abstract description 46
- 239000011787 zinc oxide Substances 0.000 title claims abstract description 46
- 238000012544 monitoring process Methods 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 claims abstract description 27
- 238000001514 detection method Methods 0.000 claims abstract description 13
- 238000004891 communication Methods 0.000 claims abstract description 11
- 238000004458 analytical method Methods 0.000 claims abstract description 5
- 238000013523 data management Methods 0.000 claims abstract description 3
- 238000006243 chemical reaction Methods 0.000 claims description 14
- 238000005259 measurement Methods 0.000 claims description 6
- 238000012360 testing method Methods 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims 1
- 238000003745 diagnosis Methods 0.000 abstract description 5
- 230000000875 corresponding effect Effects 0.000 description 13
- 230000032683 aging Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000012937 correction Methods 0.000 description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 238000002405 diagnostic procedure Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000036039 immunity Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004861 thermometry Methods 0.000 description 1
Abstract
This utility model one Zinc-Oxide Arrester on-line monitoring and the diagnostic equipment relate to electric equipment protection field, the on-line monitoring of a kind of spark gap and the diagnostic equipment.Including the spark gap signal acquisition process module for gathering spark gap voltage and leakage current, for carrying out the microcomputer control module of FFT, for gathering the temperature collect module of arrester valve piece local environment temperature, for gathering the mains by harmonics content detection module of mains by harmonics content around spark gap wiring, for transmitting current in resistance property, temperature and the communication module of mains by harmonics content and for Data Management Analysis, the host computer that stores and diagnose, for storing the cloud server of the current in resistance property amplitude collected.This device have modified the interference of temperature and the harmonic wave current in resistance property to recording, and prevents wrong diagnosis, makes the result of monitoring more accurately, reliably.
Description
Technical field
This utility model one Zinc-Oxide Arrester on-line monitoring and the diagnostic equipment relate to electric equipment protection field, especially
It is on-line monitoring and the diagnostic equipment of a kind of spark gap.
Background technology
The Main Function of spark gap discharges the overvoltage such as thunder and lightning exactly, it is to avoid electrical network and power equipment are broken by overvoltage
Bad, thus ensure the safe operation of electrical network and power equipment, metal zinc oxide lightning arrester possesses that response speed is fast, through-current capability
By force, the many merits such as volume is little, be applied in power system extensively.Zinc-Oxide Arrester, when properly functioning, will produce
Certain leakage current, by detecting the size of leakage current, can diagnose the aging of spark gap and the degree such as make moist.Lightning-arrest
Power system stability is run by device vital effect, it is necessary to the moment monitors the running status of spark gap, it is judged that lightning-arrest
Whether device is in normal duty.
Present stage the method for the on-line monitoring of Zinc-Oxide Arrester is mainly included total current method, triple harmonic current method,
Allowable current penalty method, thermometry, harmonic analysis method etc., harmonic analysis method is higher due to precision, it is possible to sensitive discovery
Making moist and degree of aging of spark gap, stable, strong interference immunity, the research of current Zinc-Oxide Arrester mainly uses this sample prescription
Method realizes on-line monitoring.But, the harmonic current that the harmonic voltage effect of electrical network produces acts on spark gap to fundamental voltage
The harmonic current of the reflection valve block nonlinear characteristic produced on non-linear valve block produces impact and the volt-ampere of zinc oxide resistance sheet
Characteristic nonlinearity degree can change along with the change of temperature, and ambient temperature difference is bigger, then the C-V characteristic non-thread obtained
Property degree also can differ relatively big, the leakage current that on-line monitoring is obtained by the harmonic wave of temperature and electrical network particularly current in resistance property has one
Fixed impact, if not considering the impact of both factors, on-Line Monitor Device is it may happen that judge by accident.At present, the most do not aoxidize
Zinc spark gap on-line monitoring and the diagnostic equipment can consider the influence factor of temperature and mains by harmonics simultaneously.
Summary of the invention
The purpose of this utility model is to provide a kind of Zinc-Oxide Arrester on-line monitoring and diagnosis for above-mentioned weak point
Device, it is possible to remove temperature factor, the interference to leakage current of the harmonic wave factor, obtain the current in resistance property under truth, and
The powerful data utilizing cloud server store and disposal ability, preserve and analyze the current in resistance property value obtained.
This utility model takes techniques below scheme to realize:
A kind of Zinc-Oxide Arrester on-line monitoring and the diagnostic equipment, including for gathering spark gap voltage and leakage current
Spark gap signal acquisition process module, for carrying out the microcomputer control module of FFT, for gathering ring residing for arrester valve piece
The temperature collect module of border temperature, for gathering the mains by harmonics content detection mould of mains by harmonics content around spark gap wiring
Block, for transmit current in resistance property, temperature and the communication module of mains by harmonics content and for Data Management Analysis, store and diagnose
Host computer, for storing the cloud server of current in resistance property amplitude collected；
Described spark gap signal acquisition process module is connected with microcomputer control module；Mains by harmonics content detection module is with micro-
The information of collection is also sent to microcomputer control module by machine panel module；Temperature collect module is connected with microcomputer control module,
Collecting temperature information is sent to microcomputer control module；Microcomputer control module is connected with host computer by communication module, host computer
It is connected with cloud server.
Described spark gap signal acquisition process module includes that being connected to spark gap end earth lead measures spark gap leakage electricity
The current transformer of stream, it is connected on system busbar bear the voltage transformer of voltage and be sequentially connected for measuring spark gap
Signal condition unit and data processing unit；
Described signal condition unit includes I/V conversion circuit, differential amplifier circuit and Anti-aliasing Filter Circuits；Described number
A/D analog to digital conversion circuit is used according to processing unit.
Described microcomputer control module uses dsp chip and peripheral auxiliary circuits, and described dsp chip is responsible for the leakage gathered
Electric current carries out fast Fourier transform, obtains fundametal compoment and the third-harmonic component of current in resistance property.
Described temperature collect module includes being positioned over spark gap inside but does not contact temperature sensor and the A/D modulus of valve block
Change-over circuit, temperature collect module obtains the ambient temperature residing for each moment Zinc-Oxide Arrester valve block in real time, and records guarantor
Deposit.
Described mains by harmonics content detection module include voltage sensor, current sensor, amplifying circuit, frequency measurement circuit and
A/D analog to digital conversion circuit, the harmonic content in mains by harmonics content detection module monitors electrical network, and record preservation.
Described communication module is the combination of RS-485 and GPRS module, it is achieved the real-time teletransmission of data.
Comprise two data bases on described host computer, described data base be respectively temperature and electric current corresponding relation data base with
And harmonic content and electric current corresponding relation data base；The amplitude of resistive current first harmonics with third-harmonic component is led to by described host computer
Cross Internet network and be stored into cloud server.
The Zinc-Oxide Arrester that described temperature and electric current corresponding relation data base be qualified dispatches from the factory the temperature of pre-test acquisition
The corresponding relation of size and current in resistance property size, using the different temperatures value size that obtains with current in resistance property value size as criterion numeral
Contrast with current in resistance property data according to the temperature obtained during storehouse, with on-line monitoring, and then remove the impact of temperature interference.
The Zinc-Oxide Arrester that described harmonic content and electric current corresponding relation data base are qualified pre-test of dispatching from the factory is passed through not
With the current in resistance property value obtained after the voltage of harmonic content, the different harmonic content sizes obtained are made with current in resistance property value size
Harmonic content for obtaining during standard database, with on-line monitoring contrasts with current in resistance property value, and then removes voltage
The interference of harmonic wave.
Cloud server described in described cloud server is used for storing gathering and revise the resistance obtained the most each time
Property current first harmonics component amplitude and current in resistance property third-harmonic component amplitude；Particularly it is used for preserving each moment current in resistance property
First-harmonic and the amplitude of third-harmonic component, calculate the width of the resistive current first harmonics in every interval of time and third-harmonic component
The meansigma methods of value and with the difference of standard value, respectively obtained the size of resistive current first harmonics and the amplitude of third-harmonic component
With the meansigma methods of changing value, and to described host computer return described in meansigma methods, in real time display current in resistance property change curve,
Described current in resistance property change curve can help the running status that attendant holds spark gap clearly, described current in resistance property base
The amplitude of ripple and third-harmonic component is the actual value after removing temperature and harmonic effects, described standard value for before dispatching from the factory necessarily
Temperature (25 DEG C), under conditions of voltage is without harmonic content, the resistive current first harmonics recorded and the amplitude of third-harmonic component.
A kind of Zinc-Oxide Arrester on-line monitoring with the Main Diagnosis flow process of the diagnostic equipment is:
1) collect after the voltage of Zinc-Oxide Arrester, current parameters through amplifying, filtering, analog digital conversion, then have microcomputer to enter
Row FFT, obtain measure resistive current first harmonics component, current in resistance property third-harmonic component, simultaneously temperature collect module and
Harmonic content detection module collecting temperature value and harmonic wave content value, by communication module by resistive current first harmonics component, resistive electricity
Stream third-harmonic component, temperature value and harmonic wave content value are sent in host computer and cloud server be analyzed processing.
2) according to temperature and electric current corresponding relation data base, harmonic content and electric current corresponding relation data base in host computer
The amplitude of resistive current first harmonics component, current in resistance property third-harmonic component is modified, including:
The first, the standard resistive current first harmonics component of correspondence, current in resistance property third-harmonic component are found according to temperature value
Amplitude, deducts data base's Plays by the resistive current first harmonics component that obtains of measurement, the amplitude of current in resistance property third-harmonic component
Resistive current first harmonics component, the amplitude of current in resistance property third-harmonic component, and then under the conditions of obtaining same temperature, different oxidations
Aging, the resistive current first harmonics component of damp degree, the changing value of current in resistance property third-harmonic component of zinc spark gap, becomes this
Change value naturalization in the temperature of standard, obtains resistive current first harmonics component under standard temperature, current in resistance property third-harmonic component
Amplitude, has eliminated the interference of temperature factor.
The second, the standard resistive current first harmonics component of correspondence, current in resistance property triple-frequency harmonics is found to divide according to harmonic content value
The amplitude of amount, deducts number by the resistive current first harmonics component obtained after temperature adjustmemt, the amplitude of current in resistance property third-harmonic component
According to resistive current first harmonics component, the amplitude of current in resistance property third-harmonic component of storehouse Plays, and then obtain same harmonic content
Under the conditions of, aging, the resistive current first harmonics component of damp degree, the current in resistance property third-harmonic component of different Zinc-Oxide Arresters
Changing value, by this changing value naturalization to without in the normal voltage of harmonic content, obtain without hindering under the normal voltage of harmonic content
Property current first harmonics component, the amplitude of current in resistance property third-harmonic component, eliminated the interference of harmonic wave factor.
3) resistive current first harmonics component, the actual value of current in resistance property third-harmonic component, host computer record are obtained after revising
And preserve this value in cloud server.Described Zinc-Oxide Arrester on-line monitoring and the diagnostic equipment are according in cloud server
Data carry out diagnosing and showing in real time two history of the amplitude of resistive current first harmonics component, current in resistance property third-harmonic component
Change curve, if the changing value of resistive current first harmonics component, current in resistance property third-harmonic component exceedes the threshold value of setting, is considered as
Zinc oxide lightning arrester insulation hydraulic performance decline, carries out alert process, and Zinc-Oxide Arrester attendant can also be according to current in resistance property
Fundametal compoment, two historical variations curves of current in resistance property third-harmonic component amplitude judge the fault of spark gap in advance.
Advantage of the present utility model is: have modified the interference of temperature and the harmonic wave current in resistance property to recording, it is therefore prevented that due to
Temperature causes the wrong diagnosis that the current in resistance property that current in resistance property increases and harmonic wave factor causes increases, and the result making monitoring is more smart
Really, reliably, establish and can react resistive current first harmonics component and the cloud server of third-harmonic component amplitude variation tendency,
Save resource, it is possible to send alarm signal in time, help operation maintenance personnel that the running status of Zinc-Oxide Arrester is carried out
Accurately, judge intuitively.
Accompanying drawing explanation
Below with reference to accompanying drawing, the utility model is described in further detail:
Fig. 1 is the structural principle block diagram of this utility model Zinc-Oxide Arrester on-line monitoring and the diagnostic equipment；
Fig. 2 is the diagnostic process flow chart of this utility model Zinc-Oxide Arrester on-line monitoring and the diagnostic equipment.
Detailed description of the invention
Referring to the drawings 1 ~ 2, this utility model one Zinc-Oxide Arrester on-line monitoring and the diagnostic equipment, including for gathering
The spark gap signal acquisition process module of spark gap voltage and leakage current, for carrying out the microcomputer control module of FFT, use
In gathering the temperature collect module of arrester valve piece local environment temperature, being used for gathering mains by harmonics content around spark gap wiring
Mains by harmonics content detection module, for transmitting the communication module of current in resistance property, temperature and harmonic content and at data
The host computer that reason is analyzed, stored and diagnose, for storing the cloud server of the current in resistance property amplitude collected.
Spark gap signal acquisition process module includes that the electric current being connected to spark gap end measurement leakage current of an arrester is mutual
Sensor, described current transformer is selected core-theaded type passive ac leakage current sensor, is connected on system busbar for measuring
Spark gap bears the voltage transformer of voltage, and for general transformer station common voltage transformer, signal condition unit, data process single
Unit, described signal condition unit specifically includes I/V conversion circuit, differential amplifier circuit, Anti-aliasing Filter Circuits, at described data
Reason unit is A/D analog to digital conversion circuit, the chip desirable multi-function electricity fraudulent using-proof principal wave harmonic wave three-phase electric energy special measuring core of employing
Sheet ATT7022C.
Microcomputer control module is mainly dsp chip and peripheral auxiliary circuits, and described dsp chip is responsible for the leakage gathered
Electric current carries out fast Fourier transform, obtains fundametal compoment and the third-harmonic component of current in resistance property, and dsp chip selects
TMS320VC5402。
Temperature collect module includes placing internal with spark gap but does not contact the temperature sensor of valve block, described temperature sensing
Device uses DS18B20 and A/D analog to digital conversion circuit, and described A/D analog to digital conversion circuit uses AD73360 chip.
Mains by harmonics content detection module includes voltage sensor, current sensor, amplifying circuit, frequency measurement circuit and A/D
Analog to digital conversion circuit, described voltage transformer uses Miniature precision voltage transformer, and described current transformer uses precision current
Transformer SCT254AK.
Communication module is the combination of RS-485 and GPRS module, it is achieved the real-time teletransmission of data.
Comprise two data bases, respectively temperature on host computer (to be calculated as below with electric current corresponding relation data base
Database1), harmonic content and electric current corresponding relation data base (being calculated as Database2 below).Database1 is qualified
Zinc-Oxide Arrester dispatches from the factory temperature value T and the current in resistance property size (i that pre-test obtains1, i3) corresponding relation, including T with
i1Corresponding relation and T and i3Corresponding relation, the temperature span of the present embodiment is-45 DEG C ~ 100 DEG C, is spaced apart 0.5 DEG C.
The Zinc-Oxide Arrester that Database2 is qualified dispatch from the factory obtain after pre-test is passed through the voltage of different harmonic content THD resistive
Current value, record preserves the current in resistance property size (i that different harmonic content THD is corresponding1, i3), including THD and i1Corresponding pass
System and THD and i3Corresponding relation, the harmonic content scope of the present embodiment is (0% ~ 15%), is spaced apart 0.1%, for actual electric network
The harmonic wave situation higher than 15%, the present embodiment, as bad data, does not record corresponding current in resistance property value.
Host computer also with the cloud of the huge data of amplitude that can process resistive current first harmonics and the third-harmonic component collected
End server is connected, and cloud server, for preserving the amplitude of each moment resistive current first harmonics and third-harmonic component, calculates
The meansigma methods of the amplitude of intraday resistive current first harmonics and third-harmonic component and the difference with standard value thereof, respectively obtain
The size of the amplitude of resistive current first harmonics and third-harmonic component and the meansigma methods of changing value in one day, and return to described host computer
Returning described meansigma methods, for display current in resistance property change curve in real time, described current in resistance property change curve can be to aid in being correlated with
Personnel hold the amplitude with third-harmonic component of the resistive current first harmonics described in the running status of spark gap clearly for removing temperature
With the actual value after harmonic effects, described standard value for before dispatching from the factory at uniform temperature (25 DEG C), voltage harmonic content is the bar of 0%
Under part, the resistive current first harmonics recorded and the amplitude of third-harmonic component.
The Main Diagnosis flow process of a kind of Zinc-Oxide Arrester on-line monitoring and the diagnostic equipment is as in figure 2 it is shown, be specifically described as:
FFT change is carried out through amplification, filtering, analog digital conversion, recycling microcomputer after collecting the voltage of Zinc-Oxide Arrester, current parameters
Change, obtain resistive current first harmonics component, current in resistance property third-harmonic component, simultaneously temperature collect module and the harmonic content measured
Detection module collecting temperature value and harmonic wave content value, by communication module by humorous to resistive current first harmonics component, current in resistance property three times
Wave component, temperature value and harmonic wave content value are sent to host computer and are analyzed processing, the current in resistance property base finally correction obtained
The amplitude of ripple and third-harmonic component is stored in cloud server.
According to temperature and electric current corresponding relation data base, harmonic content and electric current corresponding relation data base couple in host computer
Resistive current first harmonics component (is designated as i below1), current in resistance property third-harmonic component (be designated as i below3) amplitude be modified, bag
Include following steps, temperature adjustmemt: find standard i of correspondence according to temperature value T1、i3Amplitude, with the i that obtains of measurement1、i3Width
Value deducts the i of data base's Plays1、i3Amplitude, and then under the conditions of obtaining same temperature, different Zinc-Oxide Arresters aging,
The i of damp degree1、i3Changing value, by this changing value naturalization to the temperature of standard, obtain i under standard temperature1、i3Width
Value, has eliminated the interference of temperature factor.Harmonic wave correction: find standard i of correspondence according to harmonic content value1、i3Amplitude, by temperature
The resistance i that degree obtains after revising1、i3Amplitude deduct the i of data base's Plays1、i3Amplitude, and then obtain same harmonic content
Under the conditions of, aging, the i of damp degree of different Zinc-Oxide Arresters1、i3Changing value, this changing value naturalization is contained to without harmonic wave
In the normal voltage of amount, obtain without i under the normal voltage of harmonic content1、i3Amplitude, eliminated the interference of harmonic wave factor.
I is obtained after correction1、i3Actual value, host computer record also preserves this value in cloud server.Described zinc oxide
Spark gap on-line monitoring and the diagnostic equipment carry out diagnosing and showing i in real time according to the data in cloud server1、i3Amplitude
Article two, historical variations curve, if i1、i3Changing value exceed the threshold value of setting, be considered as zinc oxide lightning arrester insulation hydraulic performance decline,
Carrying out alert process, Zinc-Oxide Arrester attendant can also be according to i1、i3Two historical variations curves of amplitude judge in advance
The fault of spark gap.
The foregoing is only a kind of specific implementation of the present utility model, but protection domain of the present utility model is not only
It is confined to this, any change not having substantive change or replacement, all should contain within protection domain of the present utility model.
Therefore, protection domain of the present utility model should be as the criterion with the protection domain that claims is limited.
Claims (10)
1. a Zinc-Oxide Arrester on-line monitoring and the diagnostic equipment, it is characterised in that: include for gather spark gap voltage and
The spark gap signal acquisition process module of leakage current, for carrying out the microcomputer control module of FFT, for gathering spark gap
The temperature collect module of valve block local environment temperature, contain for gathering the mains by harmonics of mains by harmonics content around spark gap wiring
Amount detection module, for transmitting current in resistance property, temperature and the communication module of mains by harmonics content and for Data Management Analysis, storage
The host computer deposited and diagnose, for storing the cloud server of the current in resistance property amplitude collected；
Described spark gap signal acquisition process module is connected with microcomputer control module；Mains by harmonics content detection module and microcomputer control
The information of collection is also sent to microcomputer control module by making sheet module；Temperature collect module is connected with microcomputer control module, will adopt
Collection temperature information is sent to microcomputer control module；Microcomputer control module is connected with host computer by communication module, host computer and cloud
End server is connected.
Zinc-Oxide Arrester on-line monitoring the most according to claim 1 and the diagnostic equipment, it is characterised in that: described spark gap
Signal acquisition process module includes that being connected to spark gap end earth lead measures the current transformer of leakage current of an arrester, connection
For measuring the voltage transformer that spark gap bears voltage and the signal condition unit sum being sequentially connected on system busbar
According to processing unit；
Described signal condition unit includes I/V conversion circuit, differential amplifier circuit and Anti-aliasing Filter Circuits；At described data
Reason unit uses A/D analog to digital conversion circuit.
Zinc-Oxide Arrester on-line monitoring the most according to claim 1 and the diagnostic equipment, it is characterised in that: described microcomputer control
Molding block uses dsp chip and peripheral auxiliary circuits, and described dsp chip carries out fast Fourier change to the leakage current gathered
Change, obtain fundametal compoment and the third-harmonic component of current in resistance property.
Zinc-Oxide Arrester on-line monitoring the most according to claim 1 and the diagnostic equipment, it is characterised in that: described temperature is adopted
Collection module includes being positioned over spark gap inside but does not contact temperature sensor and A/D analog to digital conversion circuit, the temperature acquisition of valve block
Module obtains the ambient temperature residing for each moment Zinc-Oxide Arrester valve block in real time, and records preservation.
Zinc-Oxide Arrester on-line monitoring the most according to claim 1 and the diagnostic equipment, it is characterised in that: described electrical network is humorous
Ripple content detection module includes voltage sensor, current sensor, amplifying circuit, frequency measurement circuit and A/D analog to digital conversion circuit, electricity
Net harmonic content detection module monitors the harmonic content in electrical network, and records preservation.
Zinc-Oxide Arrester on-line monitoring the most according to claim 1 and the diagnostic equipment, it is characterised in that: described communication mould
Block is the combination of RS-485 and GPRS module, it is achieved the real-time teletransmission of data.
Zinc-Oxide Arrester on-line monitoring the most according to claim 1 and the diagnostic equipment, it is characterised in that: described host computer
On comprise two data bases, described data base is respectively temperature and electric current corresponding relation data base and harmonic content and electric current pair
Answer relational database；The amplitude of resistive current first harmonics with third-harmonic component is stored by described host computer by Internet network
To cloud server.
Zinc-Oxide Arrester on-line monitoring the most according to claim 7 and the diagnostic equipment, it is characterised in that: described temperature with
The Zinc-Oxide Arrester that electric current corresponding relation data base is qualified dispatches from the factory temperature level and the current in resistance property size that pre-test obtains
Corresponding relation.
Zinc-Oxide Arrester on-line monitoring the most according to claim 7 and the diagnostic equipment, it is characterised in that: described harmonic wave contains
Measure the Zinc-Oxide Arrester being qualified from electric current corresponding relation data base and dispatch from the factory after pre-test is passed through the voltage of different harmonic content
The current in resistance property value obtained.
Zinc-Oxide Arrester on-line monitoring the most according to claim 1 and the diagnostic equipment, it is characterised in that: described cloud
End server is used for storing gathering and revise the resistive current first harmonics component amplitude and current in resistance property three obtained the most each time
Order harmonic components amplitude.
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| CN201620680730.5U CN205786925U (en) | 2016-07-01 | 2016-07-01 | A kind of Zinc-Oxide Arrester on-line monitoring and the diagnostic equipment |
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| CN201620680730.5U CN205786925U (en) | 2016-07-01 | 2016-07-01 | A kind of Zinc-Oxide Arrester on-line monitoring and the diagnostic equipment |
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