CN109839579A - Intelligent voltage limiter lightning current impact test apparatus - Google Patents
Intelligent voltage limiter lightning current impact test apparatus Download PDFInfo
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- CN109839579A CN109839579A CN201811608266.9A CN201811608266A CN109839579A CN 109839579 A CN109839579 A CN 109839579A CN 201811608266 A CN201811608266 A CN 201811608266A CN 109839579 A CN109839579 A CN 109839579A
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- voltage limiter
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Abstract
The invention discloses a kind of intelligent voltage limiter lightning current impact test apparatus, including pressure regulator, testing transformer, silicon stack, capacitor, wave regulating resistor, harmonic inductance, current divider, measuring instrument, divider, the current divider connect measuring instrument with divider, it is boosted by pressure regulator to testing transformer, testing transformer secondary side voltage charges after being rectified by silicon stack to capacitor, after charging complete, gap breakdown, it is discharged by wave regulating resistor and harmonic inductance intelligent voltage limiter, pass through the actual current value and residual voltage value of intelligent voltage limiter by measuring instrument measurement, and the waveform that measured waveform is monitored with intelligent voltage limiter is compared.The present invention can verify the reliability of intelligent voltage limiter.
Description
Technical field
The present invention relates to intelligent voltage limiters.
Background technique
For distribution line insulator, power supply department need to spend a large amount of human and material resources and time to making an inspection tour every year.
The operating condition of the facilities and equipments such as insulator, arrester is checked, also needs to increase night inspection for investigation zero resistance insulator sometimes,
Observe by the naked eye discharge scenario, ear listens the primitive approach operation such as discharging sound, and effect is extremely undesirable, often waits until that failure is sent out
Just exposure is gone wrong after life.
Current anti-thunder insulator, damage of itself breaking down, or whether by situations such as lightning strokes, there is still a need for logical
Manual inspection is crossed to be checked.Intelligent voltage limiter product still can supervise itself fail automatically by the case where lightning stroke
It surveys.But the validity of intelligent voltage limiter product how is detected, it is first technical problems to be solved.
Summary of the invention
The technical problem to be solved by the invention is to provide a kind of intelligent voltage limiter lightning current impact test apparatus, detections
Can intelligent voltage limiter record the waveform by lightning current and time when passing through lightning current.
In order to solve the above technical problems, the present invention adopts the following technical scheme: intelligent voltage limiter lightning current impact test dress
It sets, including pressure regulator, testing transformer, silicon stack, capacitor, wave regulating resistor, harmonic inductance, current divider, measuring instrument, partial pressure
Device, the current divider connect measuring instrument with divider, are boosted by pressure regulator to testing transformer, testing transformer secondary side
Voltage charges after being rectified by silicon stack to capacitor, after charging complete, gap breakdown, by wave regulating resistor and harmonic inductance to intelligence
Can voltage limiter electric discharge, by measuring instrument measurement by the actual current value and residual voltage value of intelligent voltage limiter, and by measured waveform
The waveform monitored with intelligent voltage limiter compares.
By adopting the above technical scheme, experimental rig measurement passes through the actual current value and residual voltage of intelligent voltage limiter to the present invention
Value, and the waveform that measured waveform is monitored with intelligent voltage limiter is compared, verify the reliability of intelligent voltage limiter.
The specific technical solution of the present invention and its advantages will in the following detailed description in conjunction with attached drawing into
Row detailed description.
Detailed description of the invention
Present invention will be further described below with reference to the accompanying drawings and specific embodiments:
Fig. 1 is structural block diagram of the invention；
Fig. 2 is breakdown judge flow chart of the present invention；
Fig. 3 is lightning current impact test apparatus schematic diagram.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Below
Description only actually at least one exemplary embodiment be it is illustrative, never as to the present invention and its application or make
Any restrictions.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, shall fall within the protection scope of the present invention.
Referring to fig. 1 and fig. 2, the sub- lightning current monitoring device of Intelligent insulation, comprising:
Current acquisition sensor, for acquiring current signal；
Signal processing module, the current signal for acquiring to current acquisition sensor are handled, including filter circuit,
Integrating amplification circuit and A/D converter circuit, the filter circuit filter out high-frequency interferencing signal, and the integrating amplification circuit is to letter
It number is integrated and is amplified, the A/D converter circuit converts analog signals into digital signal；
Breakdown judge module, A/D converter circuit transformation result dma mode is first stored in array by MCU, when AD conversion knot
Data in array are carried out the processing of clipping algorithm of signal-wobble elimination by Shu Hou, then will treated data and thunder and lightning normalized current waveform ratio
Compared with being such as judged as non-lightning current, judge whether current duration is greater than failure current thresholds, by collected current waveform
Frequency calculating is carried out, power frequency short circuit current frequency is judged whether it is, if conditions above meets, is determined as zinc oxide valve plate event
Hinder, and record time of failure, wherein the judgment method of lightning current are as follows: takes the failing edge of lightning current waveform as thunder and lightning
The judgment criteria of generation compares the failing edge of collected lightning current waveform and thunder and lightning normalized current waveform failing edge
Compared with judging whether in the waveform variation range that algorithm is set, such as in waveform variation range, then judge that collected thunder and lightning is electric
The duration of waveform failing edge is flowed whether in the time range of standard lightning current failing edge, if in time range,
The total time of collected lightning current waveform is judged whether in the time range of standard lightning current, if conditions above is full up
Foot is then determined as that a thunder and lightning occurs, and records thunder and lightning time of origin；
Window comparator, under no thunder and lightning and the trouble-free situation of equipment, equipment is constantly in standby mode, when there is thunder and lightning
When miscarriage is raw, by filter circuit and integrating amplification circuit treated shape that current signal first passes through window comparator to interrupt
Formula wake-up device, equipment is AD converted acquisition to the amplified signal of integral after waking up, when collection voltages are continuously less than minimum
When threshold value, stops AD conversion, handled by signal of the MCU to acquisition；
Power module is powered for whole equipment.
Wherein, the current acquisition sensor uses Rogowski coil.Current acquisition sensor based on Rogowski coil has
Electric current can real-time measurement, fast response time, will not be saturated, almost without phase error the characteristics of.
The filter circuit uses second order Butterworth filter.The characteristics of Butterworth filter is the frequency of passband
Response curve is most smooth.It is primary that the frequency acquisition of AD conversion acquisition is set as 1us.Power module is taken using online induction be electrically coupled in
Set battery system power supply.
Furthermore it is also possible to include sending server for number of lightning strokes and lightning stroke time by narrowband Internet of Things.The clothes
Device backstage be engaged in for reception data preservation, and is sent to client displaying.
To detect intelligent voltage limiter (the i.e. above-mentioned sub- lightning current monitoring device of Intelligent insulation) when passing through lightning current, can remember
The lower waveform and time by lightning current of record is verified by comparing with the practical lightning current waveform by intelligent voltage limiter
The reliability of intelligent voltage limiter.Therefore, intelligent voltage limiter lightning current impact test apparatus as shown in Figure 3, in figure: TY: pressure regulation
Device, SB: testing transformer, D: silicon stack, C: capacitor, R: wave regulating resistor, L: harmonic inductance, FL: current divider, CY: measuring instrument,
FY: divider.The current divider connect measuring instrument with divider, is boosted by pressure regulator to testing transformer, tests transformation
Device secondary side voltage charges after being rectified by silicon stack to capacitor, and after charging complete, gap breakdown passes through wave regulating resistor and harmonic
Inductance discharges to intelligent voltage limiter, by measuring instrument measurement by the actual current value and residual voltage value of intelligent voltage limiter, and will
The waveform that measured waveform is monitored with intelligent voltage limiter compares.
When intelligent voltage limiter does not damage normally, the electric current by intelligent voltage limiter is almost nil, works as zinc oxide resistance sheet
After failure, if having lasting power current and passing through, form single-phase connects at this point, the conducting wire at intelligent voltage limiter is punctured by thunder and lightning
Earth fault, Rogowski coil is equipped on intelligent voltage limiter, monitoring can determine whether the oxygen of product herein by the curent change of product
Change whether zinc damages.
When intelligent voltage limiter does not damage normally, after lightning current, collected waveform should be normal lightning wave
Shape, the time is in us grade, if collected waveform still suffers from after normal lightning wave after zinc oxide resistance sheet damage
Lasting electric current passes through.
The high pressure of Intelligent insulation is terminated into power frequency 6kV voltage, low-pressure end ground connection, by zinc oxide valve plate partial shorts, mould
Quasi- zinc oxide valve plate malfunction carries out actual measurement to the current conditions after formation short circuit, and collects with Intelligent insulation
Current conditions compare, confirmation Intelligent insulation can receive fault current and make indicating fault.
In addition to above preferred embodiment, there are other embodiments of the invention, and those skilled in the art can be according to this
Invention makes various changes and modifications, and as long as it does not depart from the spirit of the invention, should belong in claims of the present invention and determines
The range of justice.
Claims (1)
1. intelligent voltage limiter lightning current impact test apparatus, it is characterised in that: including pressure regulator, testing transformer, silicon stack, capacitor
Device, wave regulating resistor, harmonic inductance, current divider, measuring instrument, divider, the current divider connect measuring instrument with divider, lead to
It crosses pressure regulator to boost to testing transformer, testing transformer secondary side voltage charges after rectifying by silicon stack to capacitor, charging
After the completion, gap breakdown, discharges to intelligent voltage limiter by wave regulating resistor and harmonic inductance, passes through intelligence by measuring instrument measurement
The actual current value and residual voltage value of energy voltage limiter, and the waveform that measured waveform is monitored with intelligent voltage limiter is compared.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811608266.9A CN109839579A (en) | 2018-12-27 | 2018-12-27 | Intelligent voltage limiter lightning current impact test apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811608266.9A CN109839579A (en) | 2018-12-27 | 2018-12-27 | Intelligent voltage limiter lightning current impact test apparatus |
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| CN109839579A true CN109839579A (en) | 2019-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811608266.9A Pending CN109839579A (en) | 2018-12-27 | 2018-12-27 | Intelligent voltage limiter lightning current impact test apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022082339A1 (en) * | 2020-10-19 | 2022-04-28 | 国网浙江诸暨市供电有限公司 | Intelligent insulator lightning current monitoring device and intelligent insulator fault determination method |
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| JPH0587866A (en) * | 1991-09-30 | 1993-04-06 | Ngk Insulators Ltd | Deterioration detector for arester insulator |
| CN201532403U (en) * | 2009-09-29 | 2010-07-21 | 中国电力科学研究院 | Rush current generator |
| CN203287512U (en) * | 2013-04-27 | 2013-11-13 | 中国电力科学研究院 | Detection calibration system of insulator contamination current monitoring device |
| CN204514974U (en) * | 2015-03-16 | 2015-07-29 | 国家电网公司 | For the portable lightning current generation device of earthing device impact impedance test |
| CN105759186A (en) * | 2016-03-31 | 2016-07-13 | 西安交通大学 | GIS (Gas Insulated Switchgear) on-site traveling wave test method and system |
| CN207908626U (en) * | 2018-03-23 | 2018-09-25 | 南京荣港电气技术有限公司 | A kind of simulation high frequency Partial discharge signal generating means |
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2018
- 2018-12-27 CN CN201811608266.9A patent/CN109839579A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0587866A (en) * | 1991-09-30 | 1993-04-06 | Ngk Insulators Ltd | Deterioration detector for arester insulator |
| CN201532403U (en) * | 2009-09-29 | 2010-07-21 | 中国电力科学研究院 | Rush current generator |
| CN203287512U (en) * | 2013-04-27 | 2013-11-13 | 中国电力科学研究院 | Detection calibration system of insulator contamination current monitoring device |
| CN204514974U (en) * | 2015-03-16 | 2015-07-29 | 国家电网公司 | For the portable lightning current generation device of earthing device impact impedance test |
| CN105759186A (en) * | 2016-03-31 | 2016-07-13 | 西安交通大学 | GIS (Gas Insulated Switchgear) on-site traveling wave test method and system |
| CN207908626U (en) * | 2018-03-23 | 2018-09-25 | 南京荣港电气技术有限公司 | A kind of simulation high frequency Partial discharge signal generating means |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022082339A1 (en) * | 2020-10-19 | 2022-04-28 | 国网浙江诸暨市供电有限公司 | Intelligent insulator lightning current monitoring device and intelligent insulator fault determination method |
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Application publication date: 20190604 |
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