CN100595597C - Lightning arrester various waveform aging test device - Google Patents

Lightning arrester various waveform aging test device Download PDF

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Publication number
CN100595597C
CN100595597C CN200810101527A CN200810101527A CN100595597C CN 100595597 C CN100595597 C CN 100595597C CN 200810101527 A CN200810101527 A CN 200810101527A CN 200810101527 A CN200810101527 A CN 200810101527A CN 100595597 C CN100595597 C CN 100595597C
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China
Prior art keywords
waveform
lightning arrester
voltage
sample
aging test
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CN200810101527A
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CN101236228A (en
Inventor
陈立栋
张翠霞
林毅
李武峰
李同生
葛栋
车文俊
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State Grid Corp of China SGCC
China Electric Power Research Institute Co Ltd CEPRI
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China Electric Power Research Institute Co Ltd CEPRI
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Abstract

The invention relates to a multi-waveform aging test device for an AC/DC lightning arrester, which comprises three ovens, a multi-waveform generator, a back-to-back simulator and a measurement and control system. The multi-waveform generator and the back-to-back simulator introduce a voltage signal into the ovens through a plurality of high voltage leads and apply the voltage on a sample; simultaneously the ovens heat up the sample; the measurement and control system respectively collects the voltage waveforms on a sampling resistance R1 and a voltage divider R2 through an acquisition card, and inputs the current in the sample and the born waveforms into a computer which works out the sample parameters like power consumption through mathematical analysis. Through the waveform acquisition system, the multi-waveform aging test device for the AC/DC lightning arrester inputs the current in the sample and a plurality of born waveforms into the computer which works out the sample data like power consumption through mathematical analysis, and carries out the integrated study on the accelerated aging test of the AC/DC lightning arrester.

Description

A kind of lightning arrester various waveform aging test device
Technical field
The present invention relates to a kind of test unit, particularly a kind of lightning arrester various waveform aging test device.
Background technology
In actual applications, the aging characteristics of lightning arrester are its critical natures, are related to the security and the reliability of lightning arrester operation.Therefore need carry out accelerated aging test to lightning arrester investigates its aging characteristics, and test and test stage adopt the method for equivalence to carry out.At present both at home and abroad the aging test that exchanges lightning arrester is done a large amount of work, had GB and the IEC standard can foundation.But for the direct current lightning arrester, because it bears the complicacy and the diversity of working voltage, accelerated aging test does not also have unified national standard or international standard.Present lightning arrester ageing testing equipment both domestic and external all is to design at the aging test that exchanges lightning arrester or direct current lightning arrester specially, and function is single relatively, and test capability is limited, is unfavorable for carrying out comprehensive test study.
Summary of the invention
At the problems referred to above, but the purpose of this invention is to provide the lightning arrester various waveform aging test device of a kind of integrated use in the multiple waveform accelerated aging test of AC and DC lightning arrester.
For achieving the above object, the present invention takes following technical scheme: a kind of lightning arrester various waveform aging test device, it comprises many baking ovens, Waveform Generator, analogue means and TT﹠C system back-to-back, it is characterized in that: Waveform Generator and back-to-back the plurality of voltages signal that sends of analogue means introduce baking oven by the high-voltage connection cable; Voltage divider and sample resistance are installed in outside the baking oven, and voltage divider is connected in parallel on test product two ends in the baking oven by cable, and sample resistance is connected with the test product in the baking oven; TT﹠C system utilizes capture card to gather current waveform and voltage waveform on sample resistance and the voltage divider respectively.
The AC and DC signal waveform of described Waveform Generator output, the switching between different wave is controlled by switch.
The present invention is owing to take above technical scheme, and it has the following advantages: 1, the present invention is with baking oven, Waveform Generator, module such as analogue means, TT﹠C system is carried out comprehensive exploitation back-to-back, integral device had carry out the ability of compbined test.2, the present invention imports electric current in the test product and the multiple voltage waveform that bears in the computing machine by the waveform acquisition system, calculates data such as test product power consumption by mathematical analysis, carries out the synthetic study of the accelerated aging test method of AC/DC arrester.
Description of drawings
Fig. 1 is a module frame chart of the present invention
Fig. 2 is a Waveform Generator circuit diagram of the present invention
Fig. 3 is the present invention's analogue means synoptic diagram back-to-back
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in detail.
As shown in Figure 1, the present invention includes: three baking ovens, Waveform Generator, analogue means back-to-back, TT﹠C system.Waveform Generator and back-to-back analogue means by multichannel high-voltage connection cable voltage signal is introduced baking oven, be applied on the test product (section of an arrester).Baking oven heats test product simultaneously, simulation actual motion environment.Voltage divider R 2With sample resistance R 1Be installed in outside the baking oven voltage divider R 2Be connected in parallel on test product two ends in the baking oven, sample resistance R by cable 1Connect with the test product in the baking oven.It is master control set that TT﹠C system adopts computing machine, gathers sample resistance R respectively by the computer control capture card 1With voltage divider R 2On signal waveform, again electric current in the test specimen and the voltage waveform that bears thereof are input in the computing machine, calculate the parameters such as power consumption of test specimen by mathematical analysis.Simultaneously, the switching operation that TT﹠C system is removed pilot relay by computer control Programmable Logic Controller (PLC) is applied to waveform on the test product with switching.Further going the switching operation of pilot relay again by computer control capture card and the Programmable Logic Controller that computerizeds control (PLC) in the TT﹠C system all is mature technologies of this area, is not described in detail in this.
When test unit is checked the direct current lightning arrester or exchanged the aging characteristics of lightning arrester, need different waveforms to carry out.Waveform Generator is output 27 tunnel signal waveforms at most, provide voltage signal to baking oven respectively according to certain combination.15 road waveforms are wherein arranged,, therefore do not need special setting, directly draw and get final product from alternating current source because it is common interchange output fully.As shown in Figure 2, be the generation circuit of all the other 12 road signals, wherein AC is an alternating-current voltage source, and the tested sample is connected between the output point 1,2, passes through K switch 1, K 2, K 3, K 4Folding respectively with rectification silicon stack D 1, D 2, D 3, D 4With filter capacitor C place in circuit, control 1,2 output waveform with this.Its control mode is as follows:
Work as K 1Closure, K 2, K 3, K 4During disconnection, 1-2 exports current waveform in full-wave rectifier, during the power frequency positive half-wave, and D 1, D 4Place in circuit, direction of current: AC-〉D 1-tested sample-D 4-AC; When power frequency is born half-wave, D 2, D 3Place in circuit, direction of current: AC-〉D 2-tested sample-D 3-AC.
Work as K 1, K 4Closure, K 2, K 3During disconnection, 1-2 exports dc waveform, and the same full-wave rectification of rectification silicon stack duty just inserts filter capacitor C at circuit output end.
Work as K 2Closure, K 1, K 3, K 4During disconnection, 1-2 exports half wave rectification wave, during the power frequency positive half-wave, has only D 1Place in circuit, direction of current: AC-〉D 1-tested sample-AC.
Work as K 2, K 3Closure, K 1, K 4Disconnect, 1-2 output power frequency waveform, rectification silicon stack and filter capacitor are not worked.
As shown in Figure 3, analogue means can obtain from prior art back-to-back, and it exports 9 road voltage signals at most, and different voltage signals offers baking oven respectively according to certain combination.Alternating voltage is added on the pressure regulator and converter power transformer of analogue means back-to-back, through the converter valve group of overcommutation side and inversion side at the different waveform voltage signal of difference output.Wherein: A, L point is drawn the continuous running voltage signal of analog valve lightning arrester; B, K point is drawn the continuous running voltage signal of analog DC mid point bus lightning arrester; D, F point is drawn the continuous running voltage signal of simulation transverter DC bus arrester; C, G point is drawn stack commutation angle waveform signal on the power frequency waveform; The E point is drawn the continuous running voltage signal of analog DC bus lightning arrester.
Comprehensive simulation of the present invention the lightning arrester complicacy and the diversity of bearing working voltage, have outstanding meaning for the unified standard that proposes a direct current lightning arrester accelerated aging test.

Claims (2)

1, a kind of lightning arrester various waveform aging test device, it comprises waveform generator, the analogue means and the TT﹠C system back-to-back of many baking ovens, the multiple waveform of output, it is characterized in that: described waveform generator and back-to-back the plurality of voltages signal that sends of analogue means introduce baking oven by the high-voltage connection cable, and be applied on the test product; Voltage divider and sample resistance are installed in outside the baking oven, and voltage divider is connected in parallel on test product two ends in the baking oven by cable, and sample resistance is connected with the test product in the baking oven; TT﹠C system utilizes capture card to gather current waveform and voltage waveform on sample resistance and the voltage divider respectively.
2, a kind of lightning arrester various waveform aging test device as claimed in claim 1 is characterized in that: the AC and DC signal waveform of described waveform generator output, the switching between different wave is controlled by switch.
CN200810101527A 2008-03-07 2008-03-07 Lightning arrester various waveform aging test device Active CN100595597C (en)

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Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101598757B (en) * 2009-07-14 2011-03-16 中国电力科学研究院 Residual voltage test circuit of controllable metal oxide arrester and method thereof
CN102818950B (en) * 2012-07-27 2014-11-12 苏州泰思特电子科技有限公司 Multi-waveform switching module for lightning stroke surge current testing system
CN103743968B (en) * 2013-12-17 2016-07-06 上海交通大学 The multiple lightning current resistance test method of metal oxide arrester
CN107144770A (en) * 2017-05-17 2017-09-08 国网浙江省电力公司宁波供电公司 A kind of solid macromolecule insulating materials water-treeing experimental provision
CN108919020A (en) * 2018-09-28 2018-11-30 广东电网有限责任公司 Discharge protector measuring system and discharge protector measuring instrument
CN112924772B (en) * 2021-01-20 2022-04-01 云南电网有限责任公司电力科学研究院 Lightning arrester aging evaluation system and method under multi-pulse influence of humid environment
CN112904117B (en) * 2021-01-20 2022-04-05 云南电网有限责任公司电力科学研究院 Lightning arrester aging test evaluation system and method considering air temperature and multiple lightning strikes

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KR20050064410A (en) * 2003-12-23 2005-06-29 길경석 Lightning arrester analyzer and analyzing method
CN1793989A (en) * 2005-12-31 2006-06-28 西南交通大学 Insulation aging test device used for converter high voltage pulse equipment
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