CN110398675A - A kind of method and system for the measurement to power frequency and impact superimposed voltage waveform - Google Patents
A kind of method and system for the measurement to power frequency and impact superimposed voltage waveform Download PDFInfo
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- CN110398675A CN110398675A CN201910645797.3A CN201910645797A CN110398675A CN 110398675 A CN110398675 A CN 110398675A CN 201910645797 A CN201910645797 A CN 201910645797A CN 110398675 A CN110398675 A CN 110398675A
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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
- G01R31/14—Circuits therefor, e.g. for generating test voltages, sensing circuits
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Abstract
The invention discloses a kind of measurement methods for power frequency and impact superimposed voltage waveform, the described method includes: high pressure power-frequency voltage and superposition High Voltage Impulse Waveform are converted to low-voltage signal by wideband divider, the low-voltage signal is exported respectively to high sampling rate acquisition unit and low sampling rate acquisition unit；Module is calculated by surge voltage to calculate the received low-voltage signal of the high sampling rate acquisition unit, obtains the crest voltage and time parameter of surge voltage；The received low-voltage signal of the low sampling rate acquisition unit is calculated by power-frequency voltage computing module, obtains the crest voltage and frequency parameter of power-frequency voltage；The high sampling rate acquisition unit and the received low-voltage signal of the low sampling rate acquisition unit are overlapped on a timeline by phase-triggered computing module, phase-triggered is calculated in the position of the high pressure power-frequency voltage cycle by triggering moment.
Description
Technical field
The present invention relates to transient voltage field of measuring technique, more particularly, to one kind for being superimposed to power frequency and impact
The method and system of the measurement of voltage waveform.
Background technique
In order to examine the insulating capacity of thunder resisting equipment such as arrester, in addition to individually carrying out industrial frequency withstand voltage test and impulse withstand voltage
Test, also needs to be overlapped voltage test sometimes.Most commonly used at present is power-frequency voltage superposition impulse voltage test, with suitable
When the superposition for the different test voltages that two independent current sources that mode connects generate, two power supplys are applied to the one of test product simultaneously
On a terminal.Need to avoid the voltage an of power supply to damage another set of power-supply system between two power supplys using protection element.It is folded
The technical parameter of making alive test includes the parameter of voltage value U, time delay Δ t and two component of voltage.Voltage value refers to effect
Cause to be superimposed two test voltages, resultant voltage U=U on test product1+U2.Time delay refer to two component of voltage reach peak value moment it
Between time interval.Fig. 1 is the typical repeated addition voltage test circuit of the prior art, as can be seen from the figure impulse voltage generator
There are batching sphere gap between test product, power-frequency voltage is prevented to be applied on impulse voltage generator, protective resistance and power-frequency voltage
Generator forms voltage divider system, prevents the surge voltage being applied on power-frequency voltage excessively high, damages power-supply device.
When electric system power transmission and transforming equipment or neighbouring object are by being struck by lightning, lightning surge can be invaded directly or by induction
Enter electric system, and the waveform of transient overvoltage is the superimposed voltage of power-frequency voltage and lightning impulse voltage.
Acquisition instrument measurement is commonly used in measurement for superimposed voltage.Existing main problem is to be superimposed at this time
The frequency range that waveform includes is very big, from 50Hz value to MHz.Power-frequency voltage at least needs to measure 3 cycles, and time of measuring is not
60ms can be less than, so that sample rate cannot be too high, and sample rate is too low is unable to complete documentation High Voltage Impulse Waveform, leads to electricity
Press peak computational inaccuracy.Sample rate is too high and to may cause the summary journal time too short, cannot record complete power-frequency voltage week
Wave, or record overabundance of data and cause to calculate slow.
Therefore, it is necessary to a kind of technologies, to realize the measurement to power frequency and impact superimposed voltage waveform.
Summary of the invention
Technical solution of the present invention provides a kind of method and system for the measurement to power frequency and impact superimposed voltage waveform,
To solve the problems, such as how to measure to power frequency and impact superimposed voltage waveform.
To solve the above-mentioned problems, the present invention provides a kind of measurement sides for power frequency and impact superimposed voltage waveform
Method, which comprises
High pressure power-frequency voltage and superposition High Voltage Impulse Waveform are converted into low-voltage signal by wideband divider, it will be described low
Pressure signal is exported respectively to high sampling rate acquisition unit and low sampling rate acquisition unit；
Module is calculated by surge voltage to calculate the received low-voltage signal of the high sampling rate acquisition unit,
Obtain the crest voltage and time parameter of surge voltage；
The received low-voltage signal of the low sampling rate acquisition unit is calculated by power-frequency voltage computing module,
Obtain the crest voltage and frequency parameter of power-frequency voltage；
The high sampling rate acquisition unit and the low sampling rate acquisition unit are received by phase-triggered computing module
The low-voltage signal be overlapped on a timeline, by triggering moment the high pressure power-frequency voltage cycle position calculate
Phase-triggered.
Preferably, the wideband divider are as follows: capacitor, resistance series voltage divider or capacitor, resistor coupled in parallel divider.
Preferably, comprising: carry out the high-pressure side that protective ball gap is connected to the wideband voltage divider connected.
Preferably, further includes: internal trigger mode, the low sampled acquisition unit setting is arranged in the high sampled acquisition unit
External trigger formula；
The low sampled acquisition unit is triggered by the trigger signal of the high sampled acquisition unit.
Preferably, further includes: the sample rate of the low sampling rate acquisition unit of measurement power-frequency voltage signal is not less than
100kS/s measures at least three cycle；
The sample rate for measuring the high sampling rate acquisition unit of surge voltage signal is not less than 100MS/s, time of measuring
It is not shorter than 200us.
Preferably, further includes: carry out the triggering to the surge voltage and the high pressure power-frequency voltage respectively.
Based on another aspect of the present invention, a kind of measuring system for power frequency and impact superimposed voltage waveform is provided,
The system comprises:
High pressure power-frequency voltage and superposition High Voltage Impulse Waveform are converted to low pressure letter by wideband divider by wideband divider
Number, the low-voltage signal is exported respectively to high sampling rate acquisition unit and low sampling rate acquisition unit；
Surge voltage calculates module, and it is received to the high sampling rate acquisition unit to calculate module by the surge voltage
The low-voltage signal is calculated, and the crest voltage and time parameter of surge voltage are obtained；
Power-frequency voltage computing module, it is received to the low sampling rate acquisition unit by the power-frequency voltage computing module
The low-voltage signal is calculated, and the crest voltage and frequency parameter of power-frequency voltage are obtained；
Phase-triggered computing module, by the phase-triggered computing module to the high sampling rate acquisition unit and described
The received low-voltage signal of low sampling rate acquisition unit is overlapped on a timeline, by triggering moment in the high pressure work
The position of frequency voltage cycle calculates phase-triggered.
Preferably, the wideband divider are as follows: capacitor, resistance series voltage divider or capacitor, resistor coupled in parallel divider.
Preferably, including protective ball gap, the high-pressure side that protective ball gap is connected to the wideband voltage divider is subjected to phase
Even.
Preferably, further includes: internal trigger mode, the low sampled acquisition unit setting is arranged in the high sampled acquisition unit
External trigger formula；
The low sampled acquisition unit is triggered by the trigger signal of the high sampled acquisition unit.
Preferably, further includes: the sample rate of the low sampling rate acquisition unit of measurement power-frequency voltage signal is not less than
100kS/s measures at least three cycle；
The sample rate for measuring the high sampling rate acquisition unit of surge voltage signal is not less than 100MS/s, time of measuring
It is not shorter than 200us.
Preferably, further includes: carry out the triggering to the surge voltage and the high pressure power-frequency voltage respectively.
Technical solution of the present invention provides a kind of measurement method for power frequency and impact superimposed voltage waveform, method packet
It includes: high pressure power-frequency voltage and superposition High Voltage Impulse Waveform being converted to by low-voltage signal by wideband divider, by low-voltage signal point
It Shu Chu not be to high sampling rate acquisition unit and low sampling rate acquisition unit；Module is calculated by surge voltage to acquire high sampling rate
The received low-voltage signal of unit is calculated, and the crest voltage and time parameter of surge voltage are obtained；It is calculated by power-frequency voltage
Module calculates the received low-voltage signal of low sampling rate acquisition unit, obtains the crest voltage and frequency ginseng of power-frequency voltage
Number；By phase-triggered computing module to high sampling rate acquisition unit and the received low-voltage signal of low sampling rate acquisition unit when
Between be overlapped on axis, phase-triggered is calculated in the position of high pressure power-frequency voltage cycle by triggering moment.The technology of the present invention side
A kind of power frequency/impact overlaid waveforms Accurate measurement and system that case proposes, are adopted by using two sample rates are different
Collect unit, can accurately obtain the key waveforms parameter in overlaid waveforms, solve the contradiction between time of measuring and sample rate, both
The accurate acquisition of the high frequency voltage waveform of satisfaction, and calculating speed can be improved, guarantee working efficiency.
Detailed description of the invention
By reference to the following drawings, exemplary embodiments of the present invention can be more fully understood by:
Fig. 1 is the repeated addition voltage test schematic illustration according to the prior art；
Fig. 2 is according to the preferred embodiment for the present invention for the measurement method stream to power frequency and impact superimposed voltage waveform
Cheng Tu；
Fig. 3 is according to the preferred embodiment for the present invention for the measurement method stream to power frequency and impact superimposed voltage waveform
Cheng Tu；
Fig. 4 is according to the preferred embodiment for the present invention for the measuring system knot to power frequency and impact superimposed voltage waveform
Composition.
Specific embodiment
Exemplary embodiments of the present invention are introduced referring now to the drawings, however, the present invention can use many different shapes
Formula is implemented, and is not limited to the embodiment described herein, and to provide these embodiments be at large and fully disclose
The present invention, and the scope of the present invention is sufficiently conveyed to person of ordinary skill in the field.Show for what is be illustrated in the accompanying drawings
Term in example property embodiment is not limitation of the invention.In the accompanying drawings, identical cells/elements use identical attached
Icon note.
Unless otherwise indicated, term (including scientific and technical terminology) used herein has person of ordinary skill in the field
It is common to understand meaning.Further it will be understood that with the term that usually used dictionary limits, should be understood as and its
The context of related fields has consistent meaning, and is not construed as Utopian or too formal meaning.
Fig. 2 is according to the preferred embodiment for the present invention for the measurement method stream to power frequency and impact superimposed voltage waveform
Cheng Tu.The application embodiment proposes a kind of power frequency/impact superimposed voltage measuring method for waveform, realizes comprising wide frequency ranges
The acquisition and processing of voltage signal provide technical support to the measurement of transient overvoltage in electric system.As shown in Fig. 2, a kind of
For the measurement method to power frequency and impact superimposed voltage waveform, method includes:
Preferably, in step 201: being converted to high pressure power-frequency voltage and superposition High Voltage Impulse Waveform by wideband divider
Low-voltage signal exports low-voltage signal respectively to high sampling rate acquisition unit and low sampling rate acquisition unit.Preferably, wide frequency division
Depressor are as follows: capacitor, resistance series voltage divider or capacitor, resistor coupled in parallel divider.Preferably, comprising: be connected to protective ball gap
The high-pressure side of wideband voltage divider carries out connected.Preferably, further includes: carried out respectively to surge voltage and high pressure power-frequency voltage
Triggering.
High pressure power-frequency voltage superposition High Voltage Impulse Waveform is converted into adopting for data by the wideband voltage divider of the application
Collect the low-voltage signal of unit acquisition.It is same by high sampling rate acquisition unit and the two acquisition unit measurements of low sampling rate acquisition unit
The output voltage signal of one wideband divider.Wideband voltage divider be capacitor, resistance series voltage divider or capacitor, resistance simultaneously
Join divider.The power frequency of the application/combined impulse voltage waveform measurement method, the high-pressure side of wideband voltage divider and protection ball
Gap rear end is connected, and due to the presence of protective ball gap, the output waveform of real impact voltage waveform and impulse voltage generator is different
It causes, the rise time is steeper.The coaxial cable end of the wideband divider of the application increases t connector, simultaneously by measuring signal
Access two different data acquisition units of sample rate.Two different sample rate measured data acquisition units are respectively that high sampling rate is adopted
Collect unit and low sampling rate acquisition unit.
Preferably, in step 202: calculating module to the received low-voltage signal of high sampling rate acquisition unit by surge voltage
It is calculated, obtains the crest voltage and time parameter of surge voltage.The application calculates resume module height by surge voltage and adopts
The discrete data of sample rate acquisition unit acquisition, and obtain surge voltage crest voltage and time parameter.
Preferably, in step 203: by power-frequency voltage computing module to the received low-voltage signal of low sampling rate acquisition unit
It is calculated, obtains the crest voltage and frequency parameter of power-frequency voltage.Preferably, internal trigger mould is arranged in high sampled acquisition unit
External trigger formula is arranged in formula, low sampled acquisition unit；By the trigger signal of high sampled acquisition unit to low sampled acquisition unit into
Row triggering.Preferably, the sample rate for measuring the low sampling rate acquisition unit of power-frequency voltage signal is not less than 100kS/s, and measurement is extremely
Few 3 cycles；The sample rate for measuring the high sampling rate acquisition unit of surge voltage signal is not less than 100MS/s, and time of measuring is not
Shorter than 200us.
The application handles the discrete data of low sampling rate acquisition unit acquisition by power-frequency voltage computing module, and calculates work
The parameters such as frequency voltage peak, frequency.Internal trigger mode, low sampling rate acquisition unit is arranged in high sampling rate acquisition unit in the application
External trigger mode is set, triggers low sampling rate acquisition unit using the trigger signal of high sampling rate acquisition unit, it is ensured that two
The acquisition unit triggered time is consistent.The sample rate that the application measures the data acquisition unit of power-frequency voltage signal is not less than 100kS/
S measures at least three cycle.The sample rate for measuring the data single stage unit of surge voltage signal is not less than 100MS/s, when measurement
Between not short 200us.Two acquisition units of the application measure same signal, can be placed in a metallic shield case, to eliminate week
Enclose the interference of electromagnetic field.
Preferably, in step 204: being acquired by phase-triggered computing module to high sampling rate acquisition unit and low sampling rate
The received low-voltage signal of unit is overlapped on a timeline, is calculated by triggering moment in the position of high pressure power-frequency voltage cycle
Phase-triggered.As shown in figure 3, the data that the application is obtained two acquisition units by phase-triggered computing module are in time shaft
On be overlapped, by triggering moment power-frequency voltage cycle position calculate phase-triggered.Superposition can be further calculated at this time
The peak-peak of waveform.Addition of waveforms display module shows the data of superposition and waveform parameter result in PC machine.
The application embodiment is suitable for laboratory measurement superimposed voltage waveform, is also applied for measuring in substation actual
Transient overvoltage waveform and extraction property parameter.The application acquisition unit different by using two sample rates, can accurately obtain
The key waveforms parameter in overlaid waveforms is taken, solves the contradiction between time of measuring and sample rate.The application is to transient voltage
It is triggered respectively with power-frequency voltage, simplifies and promote calculating speed while calculating.The application embodiment is suitable for becoming simultaneously
The transient overvoltage at power station scene measures.
The application embodiment is illustrated below:
100kV power-frequency voltage and 200kV surge voltage overlaid waveforms measurement method are as follows, are divided using 800kV underdamping
High pressure superimposed voltage waveform is converted into low-voltage signal by device, and the output voltage waveforms of divider export two by t connector
The signal input part of digital oscilloscope MDO3052.High sampling rate digital oscilloscope sample rate is set as 100MS/s, edging trigger.
The sample rate of low sampling rate digital oscilloscope is set as 100kS/s, external trigger.The trigger signal of low sampling rate oscillograph is by height
Sample rate digital oscilloscope provides.Two digital oscilloscopes are placed in the same metal shielding box.
The acquisition data of digital oscilloscope calculate module and calculate impact by network cable transmission to different PC machine, surge voltage
Voltage peak voltage and rise time T1With half time to peak T2, export filtered impact data file.Power-frequency voltage calculates
Module calculates voltage peak-to-peak value, and the parameters such as virtual value and frequency export filtered power frequency data file.Phase-triggered calculates
Two data files, are carried out the superposition of same time shaft by module after trigger time, thus calculate superposition phase θ, when
Prolong and the characterisitic parameters such as summing point voltage peak.
Fig. 4 is the system for the measurement to power frequency and impact superimposed voltage waveform according to the preferred embodiment for the present invention
Structure chart.As shown in figure 4, the application provides a kind of system for the measurement to power frequency and impact superimposed voltage waveform, 1 is width
Frequency division depressor, 2 be coaxial cable, and 3 be T-type connector, and 4 be high sampling rate acquisition unit, and 5 be low sampling rate acquisition unit, and 6 are
External trigger cable, 7 be metal shielding box, and 8 be cable, and 9 be computer or various intelligent terminals.
High pressure power-frequency voltage and superposition High Voltage Impulse Waveform are converted to low pressure by wideband divider 1 by wideband divider 1
Signal exports low-voltage signal respectively to high sampling rate acquisition unit 4 and low sampling rate acquisition unit 5；Preferably, wideband divides
Device 1 are as follows: capacitor, resistance series voltage divider or capacitor, resistor coupled in parallel divider.Preferably, system further includes protective ball gap, will be protected
Keep gap be connected to wideband voltage divider high-pressure side carry out it is connected.
Surge voltage calculates module, calculates module by surge voltage and believes the received low pressure of high sampling rate acquisition unit 4
It number is calculated, obtains the crest voltage and time parameter of surge voltage；
Power-frequency voltage computing module believes the received low pressure of low sampling rate acquisition unit 5 by power-frequency voltage computing module
It number is calculated, obtains the crest voltage and frequency parameter of power-frequency voltage；
Preferably, system further include: the sample rate of the low sampling rate acquisition unit of measurement power-frequency voltage signal is not less than
100kS/s measures at least three cycle；The sample rate for measuring the high sampling rate acquisition unit of surge voltage signal is not less than
100MS/s, time of measuring are not shorter than 200us.
Phase-triggered computing module acquires high sampling rate acquisition unit and low sampling rate by phase-triggered computing module
The received low-voltage signal of unit is overlapped on a timeline, is calculated by triggering moment in the position of high pressure power-frequency voltage cycle
Phase-triggered.
Preferably, system further include: internal trigger mode, the low outer touching of sampled acquisition unit setting is arranged in high sampled acquisition unit
Hairdo；Low sampled acquisition unit is triggered by the trigger signal of high sampled acquisition unit.
Preferably, system further include: carry out the triggering to the high pressure power-frequency voltage of surge voltage sum respectively.
The system 400 and this hair for the measurement to power frequency and impact superimposed voltage waveform of the preferred embodiment for the present invention
The method 200 for the measurement to power frequency and impact superimposed voltage waveform of bright another preferred embodiment is corresponding, herein not
It is repeated again.
The present invention is described by reference to a small amount of embodiment.However, it is known in those skilled in the art, as
Defined by subsidiary Patent right requirement, in addition to the present invention other embodiments disclosed above equally fall in it is of the invention
In range.
Normally, all terms used in the claims are all solved according to them in the common meaning of technical field
It releases, unless in addition clearly being defined wherein.All references " one/described/be somebody's turn to do [device, component etc.] " are all opened ground
At least one example being construed in described device, component etc., unless otherwise expressly specified.Any method disclosed herein
Step need not all be run with disclosed accurate sequence, unless explicitly stated otherwise.
Claims (12)
1. a kind of measurement method for power frequency and impact superimposed voltage waveform, which comprises
High pressure power-frequency voltage and superposition High Voltage Impulse Waveform are converted into low-voltage signal by wideband divider, the low pressure is believed
It number is exported respectively to high sampling rate acquisition unit and low sampling rate acquisition unit；
Module is calculated by surge voltage to calculate the received low-voltage signal of the high sampling rate acquisition unit, is obtained
The crest voltage and time parameter of surge voltage；
The received low-voltage signal of the low sampling rate acquisition unit is calculated by power-frequency voltage computing module, is obtained
The crest voltage and frequency parameter of power-frequency voltage；
By phase-triggered computing module to the high sampling rate acquisition unit and the received institute of the low sampling rate acquisition unit
It states low-voltage signal to be overlapped on a timeline, triggering is calculated in the position of the high pressure power-frequency voltage cycle by triggering moment
Phase.
2. according to the method described in claim 1, the wideband divider are as follows: capacitor, resistance series voltage divider or capacitor, resistance
Parallel voltage divider.
3. according to the method described in claim 1, including: the high-pressure side that protective ball gap is connected to the wideband voltage divider
It carries out connected.
4. according to the method described in claim 1, further include: internal trigger mode is arranged in the high sampled acquisition unit, described low
External trigger formula is arranged in sampled acquisition unit；
The low sampled acquisition unit is triggered by the trigger signal of the high sampled acquisition unit.
5. according to the method described in claim 1, further include: the low sampling rate acquisition unit of measurement power-frequency voltage signal
Sample rate is not less than 100kS/s, measures at least three cycle；
The sample rate for measuring the high sampling rate acquisition unit of surge voltage signal is not less than 100MS/s, and time of measuring is not short
In 200us.
6. according to the method described in claim 1, further include: it is carried out respectively to the surge voltage and the high pressure power-frequency voltage
Triggering.
7. a kind of measuring system for power frequency and impact superimposed voltage waveform, the system comprises:
High pressure power-frequency voltage and superposition High Voltage Impulse Waveform are converted to low-voltage signal by wideband divider by wideband divider,
The low-voltage signal is exported respectively to high sampling rate acquisition unit and low sampling rate acquisition unit；
Surge voltage calculates module, and it is received to the high sampling rate acquisition unit described to calculate module by the surge voltage
Low-voltage signal is calculated, and the crest voltage and time parameter of surge voltage are obtained；
Power-frequency voltage computing module, it is received to the low sampling rate acquisition unit described by the power-frequency voltage computing module
Low-voltage signal is calculated, and the crest voltage and frequency parameter of power-frequency voltage are obtained；
Phase-triggered computing module to the high sampling rate acquisition unit and described low is adopted by the phase-triggered computing module
The received low-voltage signal of sample rate acquisition unit is overlapped on a timeline, by triggering moment in the high pressure power frequency electric
The position of cycle is pressed to calculate phase-triggered.
8. system according to claim 7, the wideband divider are as follows: capacitor, resistance series voltage divider or capacitor, resistance
Parallel voltage divider.
9. protective ball gap is connected to the wideband voltage divider by system according to claim 7, including protective ball gap
High-pressure side carry out it is connected.
10. system according to claim 7, further includes: internal trigger mode is arranged in the high sampled acquisition unit, described low
External trigger formula is arranged in sampled acquisition unit；
The low sampled acquisition unit is triggered by the trigger signal of the high sampled acquisition unit.
11. system according to claim 7, further includes: the low sampling rate acquisition unit of measurement power-frequency voltage signal
Sample rate be not less than 100kS/s, measure at least three cycle；
The sample rate for measuring the high sampling rate acquisition unit of surge voltage signal is not less than 100MS/s, and time of measuring is not short
In 200us.
12. system according to claim 7, further includes: carried out respectively to the surge voltage and the high pressure power frequency electric
The triggering of pressure.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910645797.3A CN110398675A (en) | 2019-07-17 | 2019-07-17 | A kind of method and system for the measurement to power frequency and impact superimposed voltage waveform |
| PCT/CN2020/098676 WO2021008336A1 (en) | 2019-07-17 | 2020-06-29 | Method and system for measuring power frequency and superimposed impulse voltage waveforms |
| JP2021577392A JP7308306B2 (en) | 2019-07-17 | 2020-06-29 | Method and system for measuring superimposed voltage waveform of commercial voltage and impulse voltage |
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| CN201910645797.3A CN110398675A (en) | 2019-07-17 | 2019-07-17 | A kind of method and system for the measurement to power frequency and impact superimposed voltage waveform |
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| WO2021008336A1 (en) * | 2019-07-17 | 2021-01-21 | 中国电力科学研究院有限公司 | Method and system for measuring power frequency and superimposed impulse voltage waveforms |
| CN112345903A (en) * | 2020-10-29 | 2021-02-09 | 中国电力科学研究院有限公司 | Voltage generating device and method for power frequency superimposed impulse voltage |
| CN112666434A (en) * | 2020-11-23 | 2021-04-16 | 中国电力科学研究院有限公司 | Parameter determination method and system for extra-high voltage direct current cable superposition impact test device |
| CN115047301A (en) * | 2022-06-29 | 2022-09-13 | 中国电力科学研究院有限公司 | Method and system for measuring power frequency superposition operation impulse voltage signal |
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| CN117590057B (en) * | 2024-01-17 | 2024-04-02 | 中国电力科学研究院有限公司 | Full-range tracing realization method and device for impulse voltage peak value and time parameter |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021008336A1 (en) * | 2019-07-17 | 2021-01-21 | 中国电力科学研究院有限公司 | Method and system for measuring power frequency and superimposed impulse voltage waveforms |
| CN112345903A (en) * | 2020-10-29 | 2021-02-09 | 中国电力科学研究院有限公司 | Voltage generating device and method for power frequency superimposed impulse voltage |
| CN112666434A (en) * | 2020-11-23 | 2021-04-16 | 中国电力科学研究院有限公司 | Parameter determination method and system for extra-high voltage direct current cable superposition impact test device |
| CN112666434B (en) * | 2020-11-23 | 2023-12-05 | 中国电力科学研究院有限公司 | Parameter determination method and system of extra-high voltage direct current cable superposition impact test device |
| CN115047301A (en) * | 2022-06-29 | 2022-09-13 | 中国电力科学研究院有限公司 | Method and system for measuring power frequency superposition operation impulse voltage signal |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021008336A1 (en) | 2021-01-21 |
| JP7308306B2 (en) | 2023-07-13 |
| JP2022538874A (en) | 2022-09-06 |
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