CN104297647B - The test method of industrial frequency superimposed impact test - Google Patents
The test method of industrial frequency superimposed impact test Download PDFInfo
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- CN104297647B CN104297647B CN201410550645.2A CN201410550645A CN104297647B CN 104297647 B CN104297647 B CN 104297647B CN 201410550645 A CN201410550645 A CN 201410550645A CN 104297647 B CN104297647 B CN 104297647B
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Abstract
The invention discloses a kind of test method of industrial frequency superimposed impact test, it is characterized in the method equipment therefor by impulse voltage generator (1), power-frequency voltage generation device (2), coupled capacitor (3), test item (4), automatic ignition device (5) is constituted, impulse voltage generator (1) outfan is connected with coupled capacitor (3) input, coupled capacitor (3) outfan is connected with power-frequency voltage generation device (2) outfan and test item (4) high-pressure side, automatic ignition device (5) input is connected with power frequency side pressure regulator (17) primary side, automatic ignition device (5) outfan is connected with the earth terminal of the ignition pill gap (10) of impulse voltage generator (1)；The actual overvoltage that the method occurs in simulating power system, can ensure that the High Voltage Impulse Waveform for being applied to test item high-pressure side does not distort, and can realize that the phase place for impacting the power frequency that is added to is controllable, adjustable, can prevent power-frequency voltage from scurrying into impulse voltage generator.
Description
Technical field
The present invention relates to a kind of test method of industrial frequency superimposed impact test, belongs to high-voltage insulation technique field.
Background technology
Due to the implementation of urban distribution network automation, switching manipulation is more and more frequent, various in power system and system
Equipment is frequently impacted by switching overvoltage, while in the net of part city, there is the joint line of overhead transmission line and buried cable,
Lightning surge is may also suffer, and all serious harm will be brought to buried cable and electrical equipment.
Chinese patent 201210195050.0 " method for being used for high altitude localitiess power frequency and impulse superposition voltage test " is adopted
With high_voltage isolation ball gap by Impulse Voltage to test item, realize power frequency with being superimposed for impacting；Chinese patent
201110108141.1 " High aititude Transmission level alternating current and direct current, combined impulse repeated addition voltage test methods " are using protection ball gap
By Impulse Voltage to test item, realize impact and exchange, impact and direct current, impact and direct current and the superposition for exchanging；China
Patent 201220626064.9 " anti-power-frequency voltage scurries into impulse voltage generator system " adds a wind using two batching sphere gaps
Fan prevents power-frequency voltage from scurrying into impulse voltage generator；But above-mentioned technology has following deficiency：(1) ball gap is not hit in surge voltage
When wearing, surge voltage cannot pass through ball gap so that waveform has distorted；(2) fan is added to prevent using two batching sphere gaps
Power-frequency voltage scurries into impulse voltage generator, and the synchronization of two ball gaps punctures relatively difficult；(3) it is not carried out impact to be added to work
The phase place of frequency it is controllable, adjustable.
The content of the invention
The purpose of the present invention is the test side of a kind of industrial frequency superimposed impact test provided for the deficiencies in the prior art
Method, is characterized in that the surge voltage for being applied to test item high-pressure side is undistorted, and the phase place for impacting the power frequency that is added to is controllable, adjustable
, prevent power-frequency voltage from scurrying into impulse voltage generator.
The purpose of the present invention is realized by following technical measures
The test method equipment therefor of industrial frequency superimposed impact test by impulse voltage generator, power-frequency voltage generation device,
Coupled capacitor, test item, automatic ignition device are constituted, and impulse voltage generator outfan is connected with coupled capacitor input, coupling
Close electric capacity outfan to be connected with power-frequency voltage generation device outfan and test item high-pressure side, automatic ignition device input and work
The pressure regulator primary side connection of frequency side, automatic ignition device outfan are connected with the earth terminal of the ignition pill gap of impulse voltage generator
Connect.
Impulse voltage generator is by impacting side pressure regulator, impacting side industrial frequency transformer, impacting side protective resistance, high pressure silicon
Heap, ignition pill gap, impacting electric capacity, wave terminal resistance, wave front resistance, load capacitance are constituted, and power-frequency voltage generation device is by power frequency
Side pressure regulator, power frequency side Industrial Frequency Transformer, power frequency side protective resistance are constituted.
Automatic ignition device is by voltage acquisition unit, signal processing unit, single-chip microcomputer, signaling control unit, high-voltage pulse
Generation unit is constituted.
The method of the test of industrial frequency superimposed impact test is comprised the following steps：
1) required power-frequency voltage is selected with surge voltage amplitude and impact the phase place of the power frequency that is added to, by partial pressure
Device-oscillograph is connected to the voltage waveform that test item high-pressure side monitors test item high-pressure side；
2) power frequency side protective resistance is disconnected with power frequency side Industrial Frequency Transformer, is met by the distance of regulation ignition pill gap
It is applied to the surge voltage amplitude of test item high-pressure side；
3) connecting line that will be switched off is connected again, and the amplitude of power-frequency voltage is adjusted to certain amplitude, then by surge voltage
The distance of the ignition pill gap of generator is adjusted to the critical voltage that ignition pill gap punctures automatically and do not puncture；
4) automatic ignition device power supply is connected, trigger delay angle is adjusted by single-chip microcomputer is allowed to meet impact and be added to power frequency
Phase requirements, adjust control signal high level time come control high-voltage pulse generation unit produce high-voltage pulse it is lasting when
Between be allowed to meet the triggering igniting of ignition pill gap single；
5) power supply of automatic ignition device after the completion of testing, is first disconnected, then by the pressure regulator back to zero of impulse voltage generator,
The pressure regulator back to zero of power-frequency voltage generation device, the residual charge of impacting electric capacity is bled off.
The invention has the advantages that：
Connected by coupled capacitor between impulse voltage generator and power-frequency voltage generation device, can guarantee that surge voltage is sent out
The High Voltage Impulse Waveform that raw device is produced is not distorted after coupled capacitor, so as to act on test item high-pressure side.
Impulse voltage generator is voluntarily built, is facilitated the cooperation between load capacitance and coupled capacitor, is prevented power-frequency voltage
Scurry into impulse voltage generator.
The output tip node fireball gap earth terminal of automatic ignition device, is avoided that surge voltage invades automatic ignition device
In, so as to protect automatic ignition device.
Automatic ignition device is punctured so as to controlling high-tension pulse and bringing trigger point fireball gap automatically by mcu programming, real
Now impact be added to power frequency phase place it is controllable, adjustable.
Description of the drawings
Fig. 1 is the test method equipment therefor schematic diagram of industrial frequency superimposed impact test of the invention
Fig. 2 is the structural frames of the automatic ignition device in the test method equipment therefor of industrial frequency superimposed impact test of the invention
Figure
1st, impulse voltage generator, 2, power-frequency voltage generation device, 3, coupled capacitor, 4, test item, 5, automatic ignition dress
Put, 6, impacting side pressure regulator, 7, impacting side industrial frequency transformer, 8, impacting side protective resistance, 9, high voltage silicon rectifier stack, 10, ignition pill gap,
11st, impacting electric capacity, 12, wave terminal resistance, 13, wave front resistance, 14, load capacitance, 15, power frequency side protective resistance, 16, power frequency side work
Frequency power transformer, 17, power frequency side pressure regulator, 18, voltage acquisition unit, 19, signal processing unit, 20, single-chip microcomputer, 21, signal control
Unit processed, 22, high-voltage pulse generation unit.
Specific embodiment
The present invention is specifically described below by embodiment：Be necessary it is pointed out here that be that the present embodiment is served only for
The present invention is further described, it is impossible to be interpreted as limiting the scope of the invention.The person skilled in the art in the field
Some nonessential modifications and adaptations can be made according to the content of the invention described above.
Embodiment
The test method equipment therefor of industrial frequency superimposed impact test as shown in figure 1, the device by impulse voltage generator 1,
Power-frequency voltage generation device 2, coupled capacitor 3, test item 4, automatic ignition device 5 are constituted, and wherein impulse voltage generator 1 is exported
End is connected with 3 input of coupled capacitor, 3 outfan of coupled capacitor and 2 outfan of power-frequency voltage generation device, 4 high pressure of test item
End connection, 5 input of automatic ignition device be connected with 17 primary side of power frequency side pressure regulator, 5 outfan of automatic ignition device and rushes
Hit the earth terminal connection of the ignition pill gap 10 of voltage generator 1.
Impulse voltage generator 1 is by impacting side pressure regulator 6, impacting side industrial frequency transformer 7, impacting side protective resistance 8, high pressure
Silicon stack 9, ignition pill gap 10, impacting electric capacity 11, wave terminal resistance 12, wave front resistance 13, load capacitance 14 are constituted, and power-frequency voltage is produced
Generating apparatus 2 are made up of power frequency side pressure regulator 17, power frequency side Industrial Frequency Transformer 16, power frequency side protective resistance 15.
Automatic ignition device 5 by voltage acquisition unit 18, signal processing unit 19, single-chip microcomputer 20, signaling control unit 21,
High-voltage pulse generation unit 22 is constituted.
Wave head that this device is used, wave terminal resistance are noninductive resistance, and the electric capacity for being used is impacting electric capacity, is used
Protective resistance is water resistance, and the pressure regulator that used, transformator, single-chip microcomputer etc. are mill run, wherein the parameter of various elements
Required according to the impact of test and the amplitude of power-frequency voltage and test item parameter is determined.It is specifically intended that changing impact electricity
Pressure amplitude value, that is, adjust ignition pill gap apart from when, it is ensured that the residual charge of impacting electric capacity has bled off.
The test method of industrial frequency superimposed impact test is comprised the following steps：
1) required power-frequency voltage is selected with surge voltage amplitude and impact the phase place of the power frequency that is added to, by partial pressure
Device-oscillograph is connected to the voltage waveform that 4 high-pressure side of test item monitors test item high-pressure side；
2) power frequency side protective resistance 15 is disconnected with power frequency side Industrial Frequency Transformer 16, by the distance for adjusting ignition pill gap 10
To meet the surge voltage amplitude for being applied to 4 high-pressure side of test item；
3) connecting line that will be switched off is connected again, is adjusted to the amplitude of power-frequency voltage by adjusting power frequency side pressure regulator 17
Selected amplitude, then the distance of the ignition pill gap 10 of impulse voltage generator 1 is adjusted to into which by adjusting impacting side pressure regulator 6
Automatically the critical voltage value for puncturing and not puncturing；
4) 5 power supply of automatic ignition device is connected, trigger delay angle is adjusted by single-chip microcomputer 20 is allowed to meet impact and be added to
The phase requirements of power frequency, adjust the high level time of control signal controlling high-voltage pulse generation unit 22 and produce high-voltage pulse
Persistent period, it is allowed to meet the triggering igniting of 10 single of ignition pill gap；
5) power supply of automatic ignition device 5 after the completion of testing, is first disconnected, then by 6 back to zero of impacting side pressure regulator, power frequency side is adjusted
17 back to zero of depressor, the residual charge of impacting electric capacity 11 is bled off.
Claims (1)
1. the test method of industrial frequency superimposed impact test, it is characterised in that the method equipment therefor by impulse voltage generator (1),
Power-frequency voltage generation device (2), coupled capacitor (3), test item (4), automatic ignition device (5) are constituted, impulse voltage generator
(1) outfan is connected with coupled capacitor (3) input, coupled capacitor (3) outfan and power-frequency voltage generation device (2) outfan
Connect with test item (4) high-pressure side, automatic ignition device (5) input is connected with power frequency side pressure regulator (17) primary side, automatically
Igniter (5) outfan is connected with the earth terminal of the ignition pill gap (10) of impulse voltage generator (1)；Wherein, surge voltage
Generator (1) by impacting side pressure regulator (6), impacting side industrial frequency transformer (7), impacting side protective resistance (8), high voltage silicon rectifier stack (9),
Ignition pill gap (10), impacting electric capacity (11), wave terminal resistance (12), wave front resistance (13), load capacitance (14) are constituted；Power-frequency voltage
Generator (2) is made up of power frequency side pressure regulator (17), power frequency side Industrial Frequency Transformer (16), power frequency side protective resistance (15)；From
Dynamic igniter (5) by voltage acquisition unit (18), signal processing unit (19), single-chip microcomputer (20), signaling control unit (21),
High-voltage pulse generation unit (22) is constituted；
The test method is comprised the following steps：
1) select required power-frequency voltage and surge voltage amplitude and impact to be added to the phase place of power frequency, by potentiometer-show
Ripple device is connected to the voltage waveform that test item (4) high-pressure side monitors test item high-pressure side；
2) power frequency side protective resistance (15) and power frequency side Industrial Frequency Transformer (16) are disconnected, by adjust ignition pill gap (10) away from
From meeting the surge voltage amplitude for being applied to test item (4) high-pressure side；
3) connecting line that will be switched off is connected again, and the amplitude of power-frequency voltage is adjusted to choosing by adjusting power frequency side pressure regulator (17)
Fixed amplitude, then the distance of the ignition pill gap (10) of impulse voltage generator (1) is adjusted by adjusting impacting side pressure regulator (6)
Automatically puncture to which and the critical voltage value not punctured；
4) automatic ignition device (5) power supply is connected, trigger delay angle is adjusted by single-chip microcomputer (20) is allowed to meet impact and be added to
The phase requirements of power frequency, adjust control signal high level time come control high-voltage pulse generation unit (22) produce high-voltage pulse
Persistent period, be allowed to meet the triggering igniting of ignition pill gap (10) single；
5) power supply of automatic ignition device (5) after the completion of testing, is first disconnected, then by impacting side pressure regulator (6) back to zero, power frequency side is adjusted
Depressor (17) back to zero, the residual charge of impacting electric capacity (11) is bled off.
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| CN105589019A (en) * | 2016-01-25 | 2016-05-18 | 西安交通大学 | Method and device for researching discharge characteristics of SF6 gas under alternating-current superposed impact voltage |
| CN106526476B (en) * | 2016-12-21 | 2023-11-10 | 国家电网公司 | Synchronous control device and method for power frequency follow current interruption capability test synthesis loop |
| CN107121626B (en) * | 2017-05-27 | 2019-10-25 | 哈尔滨理工大学 | A kind of production method of peak values of ac superimposed pulse Resonant High Voltage |
| CN107271739A (en) * | 2017-07-19 | 2017-10-20 | 国网湖南省电力公司 | A kind of primary side protection circuit of 10kV power frequency continued flows experimental rig |
| CN107505553A (en) * | 2017-08-29 | 2017-12-22 | 国网湖南省电力公司 | A kind of power frequency continued flow experimental rig and its application method |
| CN108152686A (en) * | 2017-12-12 | 2018-06-12 | 山东电力设备有限公司 | A kind of low voltage impulse experimental rig of transformer coil |
| CN108169640A (en) * | 2017-12-29 | 2018-06-15 | 中国电力科学研究院有限公司 | One kind is based on gas isolated combined high-voltage generating means and method |
| CN108387827A (en) * | 2018-04-23 | 2018-08-10 | 天津大学 | A kind of electric branch characteristic test device under industrial frequency superimposed harmonic voltage and method |
| CN108896870B (en) * | 2018-06-28 | 2019-12-24 | 四川大学 | Power transmission line fault identification method under combined action of power frequency and impact |
| CN108896882B (en) * | 2018-06-28 | 2019-11-12 | 四川大学 | Overhead transmission line icing flashover influence factor appraisal procedure under impact and industrial frequency superimposed voltage |
| CN108896883B (en) * | 2018-06-28 | 2021-01-08 | 四川大学 | Flashover fault simulation device and method for overhead line under impulse voltage |
| CN109581113B (en) * | 2018-12-11 | 2020-10-16 | 武汉水院电气有限责任公司 | Multi-cavity gap lightning protection device power frequency follow current interruption capability test loop |
| CN111830299A (en) * | 2019-04-16 | 2020-10-27 | 段小嬿 | Novel cascade protection device of coupling test power frequency transformer |
| CN110398675A (en) * | 2019-07-17 | 2019-11-01 | 中国电力科学研究院有限公司 | A kind of method and system for the measurement to power frequency and impact superimposed voltage waveform |
| 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 |
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