CN105322510B - A kind of rapid power-down device based on solid circuit breaker - Google Patents
A kind of rapid power-down device based on solid circuit breaker Download PDFInfo
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- CN105322510B CN105322510B CN201410277247.8A CN201410277247A CN105322510B CN 105322510 B CN105322510 B CN 105322510B CN 201410277247 A CN201410277247 A CN 201410277247A CN 105322510 B CN105322510 B CN 105322510B
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Abstract
A kind of rapid power-down device based on solid circuit breaker, the device include：Supply unit, single-phase rectification bridge conditioning device, detection means, control circuit and breaker.Supply unit is electrically connected with single-phase rectification bridge conditioning device, detection means, control circuit；Control circuit is electrically connected with single-phase rectification bridge conditioning device, detection means.Using device provided by the present invention, when short trouble, leak current fault, insulation decline failure occur for coal mine underground emergency facility (refuge chamber or survival capsule) electric power system, being capable of active fast shut-off power circuit, urgent danger prevention facility is set to depart from former electric power system in 3ms, avoid because of facility exterior failure and caused by its damage, so as to avoid accident from involving urgent danger prevention facility, reliable safety guarantee is provided for coal mine underground emergency personnel.
Description
Technical field
The present invention relates to a kind of rapid power-down device, specifically relates to one kind and is used for coal mine underground emergency facility
The rapid power-down device of (refuge chamber or survival capsule).
Background technology
Underground coal mine typically uses common power and surface drilling cable double circuit power supply mode, under normal production scenarios by
Underground transformer-supplied, maintain refuge chamber and survival capsule interior environmental conditions；During generation coal mining accident, to ensure refuge chamber
Or the electric power system of survival capsule caused electric arc, electric spark in power supply handoff procedure can not cause gas explosion, it is necessary to protect
Demonstrate,prove sufficiently small full power-off time (being less than 3ms).
The actuation time of standard machinery formula breaker is longer, generally 80~140ms, and in general is contactless, and fast break fills
Full power-off time is put between 5~7ms, the requirement of fast break time can not be met.
The content of the invention
The shortcomings that present invention grows (being more than 3ms) for the rapid power-down device of the prior art full turn-off time, there is provided one
The rapid power-down device that kind is contactless.And according to the characteristics of underground coal mine electric power system, control three-phase line is switched using two-phase
Cut-off, while electric power system power-off time is shortened, simplify rapid power-down device, it is reliable to further increase device
Property.
A kind of rapid power-down device provided by the present invention, including：Supply unit, single-phase rectifier conditioning device, detection dress
Put (including three-phase current device for fast detecting, residual voltage fast current detecting device and insulation line monitoring device), control
Circuit and breaker.Supply unit and single-phase rectifier conditioning device, three-phase current device for fast detecting, residual voltage electric current are fast
Speed detector, control circuit are electrically connected；Control circuit fills with single-phase rectifier conditioning device, three-phase current quick detection
Put, residual voltage fast current detecting device is electrically connected.
Supply unit is multi-tap exchange input, multi-tap exchange and multi-voltage grade direct current output.
Single-phase rectifier conditioning device is driven in structure by buffer circuit, single-phase rectification bridge, thyristor driving circuit, IGBT
Circuit and device executing agency IGBT compositions.Buffer circuit, single-phase rectification bridge and device executing agency IGBT three are in parallel.Its
Middle buffer circuit is made up of resistance R, electric capacity C and Thyristors in series.
Detection means is quickly examined including insulation line monitoring device, zero-sequence current voltage fast detection device and three-phase current
Survey device.Data acquisition circuit and signal processing circuit are included in detection means.Three-phase current device for fast detecting and zero sequence electricity
Transformer used in current voltage device for fast detecting is Rogowski coil.Signal processing circuit analyzes and processes to detection data
Afterwards, analysis result is uploaded to control circuit, control circuit carries out logic judgment according to default and sends instruction.
Back-up protection of the breaker as device, its own has overvoltage excess current protective function, and controlled circuit
Control, be electric power system branch road where device and device last safety guarantee.
The invention has the advantages that：The residual voltage current sensing means and three-phase current detection device of high speed are real
When acquisition process voltage and current signal, fault-signal is no more than from being detected to the time terminated by signal processing circuit processing
2ms；Fault-signal result is identified from control circuit and carries out logic judgment, send instruction, to device place system branch
Fully powered-off, the time is no more than 1ms.The full power-off time up to 3ms of whole device, more common contactless fast break dress
One times of time reduction is put, substantially increases the reaction speed of power-off system, for ensureing that it is higher that coal mine downhole safety production has
Realistic meaning.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Fig. 2 is single-phase rectifier conditioning device structural representation.
Embodiment
It is further described below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of rapid power-down device provided by the present invention, including：Supply unit 1, single-phase rectifier conditioning
Device 2, three-phase current device for fast detecting 3, residual voltage fast current detecting device 4, insulation line monitoring device 5, control
Circuit 6 and breaker 7.
It is illustrated in figure 2 single-phase rectifier conditioning device 2.It is single-phase whole including being made up of diode T1, T2, T3, T4
The buffer circuit 9 of stream bridge 8, resistance R, electric capacity C and Thyristors in series composition, thyristor driving circuit 10, IGBT drive circuit 11,
And device executing agency IGBT12.Single-phase rectification bridge 8, buffer circuit 9 and IGBT12 three parts are in parallel.Thyristor driving circuit
10 and IGBT drive circuit 11 receive the instruction from control circuit 6, and require according to instruction to control IGCT and IGBT respectively
Cut-off.
Supply unit 1 is that the offer of device 2~7 meets its each required voltage grade, and input connects supply line, defeated
Go out end and connect single-phase rectifier conditioning device 2, three-phase current device for fast detecting 3, residual voltage fast current detecting device respectively
4th, insulation line monitoring device 5 and control circuit 6.
The characteristics of for Coal Mine Power Distribution System being three-phase three-wire power supply system, rapid power-down device proposed by the present invention is only
Two phase lines are sequentially connected into supply unit 1, breaker 7, three-phase current device for fast detecting 3, residual voltage electric current quickly to examine
Device 4, insulation line monitoring device 5 are surveyed, realizes the purpose of control three-phase line break-make.
Three-phase current device for fast detecting 3, residual voltage fast current detecting device 4, insulation line monitoring device 5 are distinguished
For short-circuit current in power supply system Data Detection and processing, leakage current Data Detection and processing, insulation Data Detection and processing.
The short circuit current setting valve, leak current fault setting valve and system of electric power system circuit are serviced according to apparatus of the present invention
Insulation situation, set the short circuit current setting valve of control circuit 6, leak current fault setting valve and insulation setting valve.
Control circuit 6 three-phase current device for fast detecting 3 is handled after real time data and setting themselves short circuit current
Setting valve compares, and judges whether electric power system occurs short trouble.It is less than if three-phase current device for fast detecting 3 uploads data
The short circuit current setting valve set in control circuit 6, then conclude that short trouble does not occur for electric power system；Otherwise, system is concluded
Generation short trouble.
Control circuit 6 residual voltage fast current detecting device 4 is handled after real time data and setting themselves electric leakage
Failure setting valve compares, and judges whether electric power system occurs leak current fault.If residual voltage fast current detecting device 4 uploads
Data are less than the leak current fault setting valve set in control circuit 6, then conclude that leak current fault does not occur for electric power system；Otherwise break
Determine system and leak current fault occurs.
Control circuit 6 residual voltage fast current detecting device 4 is handled after real time data and setting themselves electric leakage
Failure setting valve compares, and judges whether electric power system occurs insulation and decline failure.If insulation line monitoring device 5 uploads data
Less than the insulation setting valve set in control circuit 6, then conclude that electric power system does not occur insulation and declines failure；Otherwise conclude and be
System occurs insulation and declines failure.
If control circuit 6 judges that electric power system does not occur short trouble, leak current fault and insulation and declines failure, break
Determine electric power system normal operation.During system normal operation, control circuit 6 is to IGBT drive circuit 11 and thyristor driving circuit 10
Instruction is sent respectively, makes IGBT conductings, IGCT shut-off, line current is flowed through such as T2-IGBT-T3 in Fig. 2 or T4-IGBT-T1,
Loop is formed with load, maintains system worked well.
If control circuit 6 judges that short trouble, or leak current fault occur for electric power system, or insulation declines failure, then breaks
Determine electric power system to break down.Control circuit 6 will send shut-off instruction to IGBT drive circuit 11, and be sent out to thyristor driver 10
Go out turn-on command.IGBT is turned off, and single-phase rectification bridge both ends potential is equal, and circuit disconnects, and power supply stops.Crystalline substance is turned on after turning off IGBT
Brake tube be in order to discharge IGBT shut-off caused by overvoltage and overcurrent, buffer circuit is absorbed it and consume its energy, prevent
IGBT is burned.
Three-phase current device for fast detecting 3, residual voltage fast current detecting device 4 and insulation line monitoring device 5 three
After individual detection means carries out data sampling and processing respectively, only result upload control circuit 6 is further handled, this will be big
The big burden for reducing control circuit, also can at utmost compression set data processing time, largely shorten device
The full turn-off time.If single-phase rectifier conditioning device 2 turns off failure, control circuit 6 will control breaker 7 to disconnect circuit, make
For back-up protection ensuring equipment and the safety of supply line.
Claims (4)
1. a kind of rapid power-down device based on solid circuit breaker, it is characterised in that the device includes：It is supply unit (1), single-phase
Rectification conditioning device (2), three-phase current device for fast detecting (3), residual voltage fast current detecting device (4), insulation are online
Monitoring device (5), control circuit (6) and breaker (7)；Supply unit (1) and single-phase rectifier conditioning device (2), three-phase current
Device for fast detecting (3), residual voltage fast current detecting device (4), control circuit (6) are electrically connected；Control circuit (6)
With single-phase rectifier conditioning device (2), three-phase current device for fast detecting (3), residual voltage fast current detecting device (4) respectively
Electrical connection；
Electricity is driven by buffer circuit, single-phase rectification bridge, thyristor driving circuit, IGBT in single-phase rectifier conditioning device (2) structure
Road and device executing agency IGBT compositions；Buffer circuit is made up of resistance R, electric capacity C and Thyristors in series；
Three-phase current device for fast detecting (3), residual voltage fast current detecting device (4), insulation line monitoring device (5) point
Not by after the data processing gathered in real time, control circuit (6) is uploaded to, logic judgment is carried out by control circuit (6).
2. rapid power-down device according to claim 1, it is characterised in that three-phase three-wire power supply system circuit is only by two
It is quick that phase line is sequentially connected supply unit (1), breaker (7), three-phase current device for fast detecting (3), residual voltage electric current
Detection means (4), insulation line monitoring device (5).
3. rapid power-down device according to claim 1, it is characterised in that buffer circuit, single-phase rectification bridge and device are held
Row mechanism IGBT three is in parallel.
4. rapid power-down device according to claim 1, it is characterised in that wherein three-phase current device for fast detecting (3)
With residual voltage fast current detecting device (4), both transformers used are Rogowski coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410277247.8A CN105322510B (en) | 2014-06-20 | 2014-06-20 | A kind of rapid power-down device based on solid circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410277247.8A CN105322510B (en) | 2014-06-20 | 2014-06-20 | A kind of rapid power-down device based on solid circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105322510A CN105322510A (en) | 2016-02-10 |
| CN105322510B true CN105322510B (en) | 2018-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410277247.8A Active CN105322510B (en) | 2014-06-20 | 2014-06-20 | A kind of rapid power-down device based on solid circuit breaker |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112886536A (en) * | 2021-01-14 | 2021-06-01 | 济南海林科技有限公司 | Voltage transformation system with instantaneous quick-break protection function and quick-break protection method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080113809A (en) * | 2007-06-26 | 2008-12-31 | 유기현 | An electric power system had double circuit breaker |
| CN201234120Y (en) * | 2008-07-29 | 2009-05-06 | 吉增权 | Novel comprehensive protector for mining coal drill |
| CN203983971U (en) * | 2014-06-20 | 2014-12-03 | 中国矿业大学(北京) | A kind of rapid power-down device based on solid circuit breaker |
-
2014
- 2014-06-20 CN CN201410277247.8A patent/CN105322510B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080113809A (en) * | 2007-06-26 | 2008-12-31 | 유기현 | An electric power system had double circuit breaker |
| CN201234120Y (en) * | 2008-07-29 | 2009-05-06 | 吉增权 | Novel comprehensive protector for mining coal drill |
| CN203983971U (en) * | 2014-06-20 | 2014-12-03 | 中国矿业大学(北京) | A kind of rapid power-down device based on solid circuit breaker |
Non-Patent Citations (2)
| Title |
|---|
| 基于可编程控制器的矿用隔爆型高压真空配电装置测控系统;葛夫强;《中国优秀硕士学位论文全文数据库工程科技Ⅰ辑》;20120315(第03期);第3-8页及图2.1 * |
| 煤矿井下紧急避险硐室快速断电固态开关的研究;高彦 等;《煤矿现代化》;20140215(第1期);第45-46页及图8 * |
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| CN105322510A (en) | 2016-02-10 |
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