CN103630795A - Quantitative simulation generation and acquisition unit for electric short-circuit faults - Google Patents
Quantitative simulation generation and acquisition unit for electric short-circuit faults Download PDFInfo
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- CN103630795A CN103630795A CN201310672771.0A CN201310672771A CN103630795A CN 103630795 A CN103630795 A CN 103630795A CN 201310672771 A CN201310672771 A CN 201310672771A CN 103630795 A CN103630795 A CN 103630795A
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Abstract
The invention provides a quantitative simulation generation and acquisition unit for electric short-circuit faults. The quantitative simulation generation and acquisition unit for electric short-circuit faults comprises a computer, a phase-controlled closing signal generator, multiple timing controllers, a power supply source, and a transformer. An anode of the power supply source is connected with the multi-way timing controller. The multiple timing controllers are connected with the phase-controlled closing signal generator, a control switch and a current regulation circuit prior to being connected to a cathode of the power supply source. Two ends of the control switch are parallelly connected with a control signal output circuit which is connected with the computer. The current regulation circuit is connected to the cathode of the power supply source after the control is serially connected with the transformer. A load resistor is connected to the transformer. A circuit sample is connected between each phase-controlled closing switch and the timing controller. When the unit operates, the multiple timing controllers synchronize according to a same time base; closing of the phase-controlled closing switches is controlled through a control signal output by the computer, so that short-circuit current phase angle and timing are controllable and short-circuit trace samples are quantitatively simulated and manufactured.
Description
Technical field
The invention relates to a kind of electric short circuit fault quantitative simulation generation harvester, for fire-fighting research institution, quantitatively prepares short circuit sample.
Background technology
Along with the development of economic construction, production and domestic load are soaring year by year, and the fire causing because of electric reason frequently occurs, and because electrical fire is sudden strong, the loss often causing is huge, has seriously endangered public safety.Fire statistics data according to the Fire-Fighting Bureau under the Ministry of Public Security shows, since 21 century, China's electrical fire number and loss has occurred and accounted for every year fire and always play 20%～30% of number and loss.From the ranking of cause of fire ratio, electrical fire occupies first, and wherein major part all occurs on low-voltage circuit, and short trouble is the main cause (accounting for 51%) that causes electrical fire.
The reason of electric short circuit has two kinds: the one, and because circuit self insulation ag(e)ing or breakage cause short circuit, in this process, the huge heat energy that ohmic loss and electric arc produce may ignite wire sheath and combustible around, thereby initiation fire; The 2nd, external flame or heat radiation cause insulation damages, cause short circuit.
But at present, owing to existing, electric short circuit vestige Quantitative Study is less, and evaluation work still exists the difficulties of " fuzzy region ", in the urgent need to vestige sample preparation process is carried out to quantification control.
Summary of the invention
For above deficiency, the invention provides a kind of electric short circuit fault quantitative simulation generation harvester, for evaluation work provides the standard model that consistance is strong.
The technical scheme of the invention: electric short circuit fault quantitative simulation generation harvester, comprise computing machine, triode, bridge rectifier circuit, phase selection signal generator (K1 ~ K8), multichannel time schedule controller, power supply and transformer, phase selection signal generator (K1 ~ K8) connection corresponding to multichannel time schedule controller, wherein the positive pole of power supply is connected with multichannel time schedule controller, multichannel time schedule controller is through phase selection signal generator (K1 ~ K8), gauge tap (K10), after matrix current adjustment circuit, be connected with the negative pole of power supply, the two ends of gauge tap (K10) are also connected with control signal output circuit, described control signal output circuit is that computing machine is connected with bridge rectifier circuit through triode, and bridge rectifier circuit is connected on the two ends of gauge tap (K10) by the switch (K9, K12) of its both sides, described matrix current adjustment circuit is after a gauge tap is connected in series with a transformer, to be connected on the negative pole of power supply, is connected to pull-up resistor on transformer, circuit sample is connected between each road option closing switch and time schedule controller.
Described matrix current adjustment circuit comprises to be adjusted large current return and adjusts little current return, adjust large current return and adjust the negative pole that is connected on power supply after little current return all adopts a gauge tap to be connected in series with a transformer, the turn ratio of wherein adjusting the transformer adopting in large current return is large, the turn ratio of adjusting the transformer adopting in little current return is little, is convenient to like this control the size of electric current.
The beneficial effect of the invention: adopt the invention, adopt the connection corresponding to multichannel time schedule controller of phase selection signal generator, each interchannel is worked alone, noiseless; During work, multichannel time schedule controller is base synchronizing when same, controls the closure of option closing switch by the control signal of computer export, realized short-circuit current phase angle, time controlled, and then quantitative simulation is prepared short circuit vestige sample; The invention is carried out quantification control to preparing electric short circuit vestige sample, has therefore improved the consistance of product, and then has improved accuracy and the reliability of the work of identifying.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of the invention.
Embodiment
As shown in Figure 1, electric short circuit fault quantitative simulation generation harvester, comprise computing machine, triode, bridge rectifier circuit, phase selection signal generator (K1 ~ K8), multichannel time schedule controller, power supply and transformer, phase selection signal generator (K1 ~ K8) connection corresponding to multichannel time schedule controller, wherein the positive pole of power supply is connected with multichannel time schedule controller, multichannel time schedule controller is through phase selection signal generator (K1 ~ K8), gauge tap (K10), after matrix current adjustment circuit, be connected with the negative pole of power supply, the two ends of gauge tap (K10) are also connected with control signal output circuit, described control signal output circuit is that computing machine is connected with bridge rectifier circuit through triode, and bridge rectifier circuit is connected on the two ends of gauge tap (K10) by the switch (K9, K12) of its both sides, described matrix current adjustment circuit comprises to be adjusted large current return and adjusts little current return, adjust large current return and adjust the negative pole that is connected on power supply after little current return all adopts a gauge tap to be connected in series with a transformer, the turn ratio of wherein adjusting the transformer adopting in large current return is large, the turn ratio of adjusting the transformer adopting in little current return is little, is connected to respectively pull-up resistor on transformer, circuit sample is connected between each road option closing switch and time schedule controller.
During work, first controlling test program is created to editor on computers, then by 485 bus interface converters, test routine is downloaded to time schedule controller and phase selection signal generator, time schedule controller is after obtaining experimental order, by the controlling test program being pre-created, send gating pulse, time schedule controller is synchronizeed with power supply voltage, by gating pulse, is controlled phase selection signal generator and then is realized phase selection function, has finally realized short-circuit current phase angle, time controlled.
Triode is for amplifying the control signal from computer export, and bridge rectifier circuit, for the control signal after amplifying is carried out steadily, makes short-circuit current control more stable, reliable at phase angle and time.
Claims (2)
1. electric short circuit fault quantitative simulation generation harvester, it is characterized in that: comprise computing machine, triode, bridge rectifier circuit, phase selection signal generator (K1 ~ K8), multichannel time schedule controller, power supply and transformer, phase selection signal generator (K1 ~ K8) connection corresponding to multichannel time schedule controller, wherein the positive pole of power supply is connected with multichannel time schedule controller, multichannel time schedule controller is through phase selection signal generator (K1 ~ K8), gauge tap (K10), after matrix current adjustment circuit, be connected with the negative pole of power supply, the two ends of gauge tap (K10) are also connected with control signal output circuit, described control signal output circuit is that computing machine is connected with bridge rectifier circuit through triode, and bridge rectifier circuit is connected on the two ends of gauge tap (K10) by the switch (K9, K12) of its both sides, described matrix current adjustment circuit is after a gauge tap is connected in series with a transformer, to be connected on the negative pole of power supply, is connected to pull-up resistor on transformer, circuit sample is connected between each road option closing switch and time schedule controller.
2. electric short circuit fault quantitative simulation generation harvester as claimed in claim 1, it is characterized in that: described matrix current adjustment circuit comprises to be adjusted large current return and adjust little current return, adjust large current return and adjust the negative pole that is connected on power supply after little current return all adopts a gauge tap to be connected in series with a transformer, the turn ratio of wherein adjusting the transformer adopting in large current return is large, and the turn ratio of adjusting the transformer adopting in little current return is little.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310672771.0A CN103630795B (en) | 2013-12-12 | 2013-12-12 | Electric short circuit fault quantitative simulation generation harvester |
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| CN201310672771.0A CN103630795B (en) | 2013-12-12 | 2013-12-12 | Electric short circuit fault quantitative simulation generation harvester |
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| CN103630795A true CN103630795A (en) | 2014-03-12 |
| CN103630795B CN103630795B (en) | 2016-06-29 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104502779A (en) * | 2014-12-10 | 2015-04-08 | 安徽国科电力设备有限公司 | Short-circuit test equipment based on low-voltage high-speed switch |
| CN104569725A (en) * | 2015-01-09 | 2015-04-29 | 广东电网有限责任公司佛山供电局 | Electric power system short circuit fault test device capable of precisely controlling short circuit time |
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| CN201348954Y (en) * | 2008-12-23 | 2009-11-18 | 东莞市广安电气检测中心有限公司 | Novel phase selection closing control device |
| CN203688710U (en) * | 2013-12-12 | 2014-07-02 | 公安部沈阳消防研究所 | Quantitatively modeling generation and acquisition device for electrical short-circuit faults |
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2013
- 2013-12-12 CN CN201310672771.0A patent/CN103630795B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201348954Y (en) * | 2008-12-23 | 2009-11-18 | 东莞市广安电气检测中心有限公司 | Novel phase selection closing control device |
| CN203688710U (en) * | 2013-12-12 | 2014-07-02 | 公安部沈阳消防研究所 | Quantitatively modeling generation and acquisition device for electrical short-circuit faults |
Non-Patent Citations (3)
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104502779A (en) * | 2014-12-10 | 2015-04-08 | 安徽国科电力设备有限公司 | Short-circuit test equipment based on low-voltage high-speed switch |
| CN104569725A (en) * | 2015-01-09 | 2015-04-29 | 广东电网有限责任公司佛山供电局 | Electric power system short circuit fault test device capable of precisely controlling short circuit time |
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| CN103630795B (en) | 2016-06-29 |
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Address after: 110034 No. 218-20, Wen Da Road, Huanggu District, Shenyang, Liaoning. Patentee after: Shenyang Institute of Fire Protection, Ministry of Emergency Management Address before: 110034 No. 218-20, Wen Da Road, Huanggu District, Shenyang, Liaoning. Patentee before: Shenyang Fire-Extiquishing Inst., Public Security Ministry |
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