CN202119866U - Variable-frequency series resonance voltage withstanding test device - Google Patents

Variable-frequency series resonance voltage withstanding test device Download PDF

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Publication number
CN202119866U
CN202119866U CN2011201693377U CN201120169337U CN202119866U CN 202119866 U CN202119866 U CN 202119866U CN 2011201693377 U CN2011201693377 U CN 2011201693377U CN 201120169337 U CN201120169337 U CN 201120169337U CN 202119866 U CN202119866 U CN 202119866U
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CN
China
Prior art keywords
variable
test
frequency
voltage divider
power sources
Prior art date
Application number
CN2011201693377U
Other languages
Chinese (zh)
Inventor
张晓东
牛俊峰
徐莉
余晓玲
刘艳
李家双
关众敬
高维江
李国强
贾睿新
Original Assignee
黑龙江省安装工程公司
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Publication date
Application filed by 黑龙江省安装工程公司 filed Critical 黑龙江省安装工程公司
Priority to CN2011201693377U priority Critical patent/CN202119866U/en
Application granted granted Critical
Publication of CN202119866U publication Critical patent/CN202119866U/en

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Abstract

Disclosed is a variable-frequency series resonance voltage withstanding test device. With the development of electric power cause, capacitance of all of long-distance cable lines, power transformers and large-sized generator sets is high. The variable-frequency series resonance voltage withstanding test device structurally comprises a variable-frequency power source (1) connected with an exciting transformer (2), a lightning arrester (3) is parallelly connected with the exciting transformer and a series circuit of a resonance reactor (4) and a voltage divider (5), and the voltage divider is provided with an end parallelly connected with a sample (6). The variable-frequency series resonance voltage withstanding test device is used for resonance voltage withstanding tests.

Description

The variable-frequency series-resonance Withstand test device
Technical field:
< b TranNum=" 90 ">the utility model relates to a kind of novel resonance pressure-resistant test unit, is specifically related to a kind of variable-frequency series-resonance Withstand test device.</b>
Background technology:
< b TranNum=" 94 ">along with the development of electric utility, and the electric capacity of long-distance cable circuit, power transformer, large-scale genset is all very big.When tradition adopts the examination change that they are carried out the industrial frequency AC withstand voltage test, jumbo testing transformer and experiment power supply must be provided, the site test difficulty is very big.</b>
Summary of the invention:
The purpose of < b TranNum=" 98 ">the utility model provides a kind of inductance that makes reactor and test specimen electric capacity attribute realization variable-frequency series-resonance that can carry out withstand voltage test to big capacitance apparatus such as long lines, power transformer, Generator Set.</b>
Above-mentioned purpose realizes through following technical scheme:
< b TranNum=" 102 ">variable-frequency series-resonance Withstand test device; Its composition comprises: variable-frequency power sources; Described variable-frequency power sources connects exciting transformer; Described exciting transformer lightning arrester connected in parallel, the series circuit of described lightning arrester parallel resonance reactor and voltage divider, described voltage divider have parallelly connected port with test product.</b>
< b TranNum=" 104 ">described variable-frequency series-resonance Withstand test device; Capacitor C 1 and capacitor C 2 are housed in the described voltage divider; Described variable-frequency power sources has 220V power supply or 380V power supply; Described variable-frequency power sources connects ground wire, and the tapped acquired signal line of the capacitor C 1 of described voltage divider and capacitor C 2 is connected described variable-frequency power sources ground end.</b>
[0006] beneficial effect:
< b TranNum=" 108 ">are the utility model at the scene during the final acceptance of construction commissioning test 1., and AC voltage withstand test is the most effectively means of field test cable line, power transformer, large-scale equipment installment quality such as genset.</b>
< b TranNum=" 110 ">the utility model is more suitable for the working-yard and uses, and for the large capacity equipment withstand voltage test, has more advantage than traditional pressure-resistant equipment.</b>
< b TranNum=" 112 ">the utility model volume is little, in light weight, is fit to the working-yard and uses; During voltage levels, reactor adopts modular construction, is convenient to transportation simultaneously and installs with on-the-spot.</b>
When the utility model punctured at test product, condition of resonance destroyed < b TranNum=" 114 " >, and short-circuit current is little, has only below 1/10 of test product rated current, and is little to the harmfulness of test product.</b>
< b TranNum=" 116 ">the utility model adopts one point earth, incoming relay-protection, low-channel filter, discharge prevention etc.; Not only can under stable state, make discharge or breakdown current little; But also the destruction of transient state (instantaneous) electric current is reduced, thereby the safety of the assurance equipment and the person.</b>
< b TranNum=" 118 ">the utility model is applied widely; Can carry out the frequency-changing AC withstand voltage test to power cable, isolating switch, switch; Electrical equipments such as Generator Set, power transformer, mutual inductor, sleeve pipe are carried out withstand voltage test, also can be used for partial discharge test and measurement of Grounding Resistance.</b>
< b TranNum=" 120 ">the utility model variable-frequency series-resonance withstand voltage test is earlier at low-voltage downward modulation tuning-points, and then the boosted voltage amplitude reaches the test required voltage, and can keep tuning-points, and is safe and reliable.</b>
Description of drawings:
< b TranNum=" 124 ">accompanying drawing 1 is the structural representation of this product.</b>
Embodiment:
Embodiment 1:
< b TranNum=" 130 ">a kind of variable-frequency series-resonance Withstand test device; Its composition comprises: variable-frequency power sources 1; Described variable-frequency power sources connects exciting transformer 2; Described exciting transformer lightning arrester connected in parallel 3, the series circuit of described lightning arrester parallel resonance reactor 4 and voltage divider 5, described voltage divider has the parallelly connected port with test product 6.</b>
Embodiment 2:
< b TranNum=" 134 ">embodiment 1 described variable-frequency series-resonance Withstand test device; Capacitor C 1 and capacitor C 2 are housed in the described voltage divider; Described variable-frequency power sources has 220V power supply or 380V power supply; Described variable-frequency power sources connects ground wire, and described voltage divider connects ground wire, and the tapped acquired signal line of the capacitor C 1 of described voltage divider and capacitor C 2 is connected described variable-frequency power sources ground end.</b>
Embodiment 3:
<b TranNum=" 138 ">The described variable-frequency series-resonance Withstand test device of above embodiment, the wherein resulting impedance of series loop:, the electric current of series loop:, the voltage on the electric capacity:, at that time, impedance loop had minimum value: Z=R has, then f=</b><img TranNum="139" file="790975DEST_PATH_IMAGE006.GIF" he="45" img-content="drawing" img-format="GIF" inline="no" orientation="portrait" wi="61"/>The quality factor of resonant tank are Q=< img TranNum=" 140 " file=" 2011201693377100002DEST_PATH_IMAGE007.GIF " he=" 25 " img-content=" drawing " img-format=" jpg " inline=" no " orientation=" portrait " wi=" 49 "/> < b TranNum=" 141 " >/R=ω L/R=1/ ω CR; UC=QUs then, promptly the voltage on the test specimen be field voltage Q doubly.Power input P=UsIscos δ during resonance, loads to pure resistive, i.e. cos δ=1, thus P=UsIs, and the capacity PS that is added on the test specimen is voltage U C and the product of electric current I: the PS=UCIs=QUsIs=QP that applies.The capacity that just obtains at test specimen is Q a times of experiment power supply capacity.</b>

Claims (2)

1. variable-frequency series-resonance Withstand test device; Its composition comprises: variable-frequency power sources; It is characterized in that: described variable-frequency power sources connects exciting transformer; Described exciting transformer lightning arrester connected in parallel, the series circuit of described lightning arrester parallel resonance reactor and voltage divider, described voltage divider have parallelly connected port with test product.
2. variable-frequency series-resonance Withstand test device according to claim 1; It is characterized in that: capacitor C 1 and capacitor C 2 are housed in the described voltage divider; Described variable-frequency power sources has 220V power supply or 380V power supply; Described variable-frequency power sources connects ground wire, and the tapped acquired signal line of the capacitor C 1 of described voltage divider and capacitor C 2 is connected described variable-frequency power sources ground end.
CN2011201693377U 2011-05-25 2011-05-25 Variable-frequency series resonance voltage withstanding test device CN202119866U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011201693377U CN202119866U (en) 2011-05-25 2011-05-25 Variable-frequency series resonance voltage withstanding test device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011201693377U CN202119866U (en) 2011-05-25 2011-05-25 Variable-frequency series resonance voltage withstanding test device

Publications (1)

Publication Number Publication Date
CN202119866U true CN202119866U (en) 2012-01-18

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Application Number Title Priority Date Filing Date
CN2011201693377U CN202119866U (en) 2011-05-25 2011-05-25 Variable-frequency series resonance voltage withstanding test device

Country Status (1)

Country Link
CN (1) CN202119866U (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102735997A (en) * 2012-06-19 2012-10-17 扬州市双宝电力设备有限公司 Series resonance withstanding voltage tester
CN103308826A (en) * 2012-03-15 2013-09-18 辽宁省电力有限公司大连供电公司 Integrated alternating current withstand voltage testing device
CN103558537A (en) * 2013-11-01 2014-02-05 国家电网公司 Circuit for testing overload tolerance capacity of series capacitor and working method of circuit
CN104035013A (en) * 2014-05-30 2014-09-10 中国南方电网有限责任公司超高压输电公司检修试验中心 500 KV electromagnetic voltage transformer alternating-current frequency-doubling withstand voltage test circuit and method
CN104111412A (en) * 2014-06-30 2014-10-22 国家电网公司 Protection connection structure for preventing components in variable frequency power cabinet from flashover impact of tested object
CN104316854A (en) * 2014-11-06 2015-01-28 国网上海市电力公司 Variable-frequency resonance testing circuit
CN104459501A (en) * 2014-12-25 2015-03-25 中国西电电气股份有限公司 Lightning arrester power frequency testing device and method
CN105548833A (en) * 2015-12-09 2016-05-04 天津二十冶建设有限公司 High-voltage cable frequency conversion series resonance voltage withstand debugging method
CN109298302A (en) * 2018-08-24 2019-02-01 湖北仪天成电力设备有限公司 Increasing apparatus is used in a kind of inspection of series resonance
CN109490727A (en) * 2018-11-27 2019-03-19 国网四川省电力公司电力科学研究院 A kind of arrester series resonance test device and method
CN109521338A (en) * 2018-11-27 2019-03-26 汪锐 Frequency conversion parallel resonance pressure resistant test method based on Cascade boosting
CN110703059A (en) * 2019-11-13 2020-01-17 上海恒能泰企业管理有限公司璞能电力科技工程分公司 Device for improving tuning stability of series resonance test under small load

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103308826A (en) * 2012-03-15 2013-09-18 辽宁省电力有限公司大连供电公司 Integrated alternating current withstand voltage testing device
CN102735997A (en) * 2012-06-19 2012-10-17 扬州市双宝电力设备有限公司 Series resonance withstanding voltage tester
CN103558537A (en) * 2013-11-01 2014-02-05 国家电网公司 Circuit for testing overload tolerance capacity of series capacitor and working method of circuit
CN103558537B (en) * 2013-11-01 2015-12-30 国家电网公司 The circuit of test series capacitor tolerance capability of overload and method of work thereof
CN104035013A (en) * 2014-05-30 2014-09-10 中国南方电网有限责任公司超高压输电公司检修试验中心 500 KV electromagnetic voltage transformer alternating-current frequency-doubling withstand voltage test circuit and method
CN104111412A (en) * 2014-06-30 2014-10-22 国家电网公司 Protection connection structure for preventing components in variable frequency power cabinet from flashover impact of tested object
CN104316854A (en) * 2014-11-06 2015-01-28 国网上海市电力公司 Variable-frequency resonance testing circuit
CN104459501A (en) * 2014-12-25 2015-03-25 中国西电电气股份有限公司 Lightning arrester power frequency testing device and method
CN105548833A (en) * 2015-12-09 2016-05-04 天津二十冶建设有限公司 High-voltage cable frequency conversion series resonance voltage withstand debugging method
CN109298302A (en) * 2018-08-24 2019-02-01 湖北仪天成电力设备有限公司 Increasing apparatus is used in a kind of inspection of series resonance
CN109490727A (en) * 2018-11-27 2019-03-19 国网四川省电力公司电力科学研究院 A kind of arrester series resonance test device and method
CN109521338A (en) * 2018-11-27 2019-03-26 汪锐 Frequency conversion parallel resonance pressure resistant test method based on Cascade boosting
CN109490727B (en) * 2018-11-27 2020-05-26 国网四川省电力公司电力科学研究院 Lightning arrester series resonance test device and method
CN110703059A (en) * 2019-11-13 2020-01-17 上海恒能泰企业管理有限公司璞能电力科技工程分公司 Device for improving tuning stability of series resonance test under small load

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