CN103095271A - 20KV vacuum switch cabinet non-contact switch - Google Patents
20KV vacuum switch cabinet non-contact switch Download PDFInfo
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- CN103095271A CN103095271A CN2013100062446A CN201310006244A CN103095271A CN 103095271 A CN103095271 A CN 103095271A CN 2013100062446 A CN2013100062446 A CN 2013100062446A CN 201310006244 A CN201310006244 A CN 201310006244A CN 103095271 A CN103095271 A CN 103095271A
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Abstract
The invention provides a 20KV vacuum switch cabinet non-contact switch which resolves the problem that impact on power grids and electrical equipment is caused because electric arc is generated during operational processes of turn-on and turn-off of high-voltage switches in the prior art. The 20KV vacuum switch cabinet non-contact switch comprises a non-contact switch device and a trigger controller. The non-contact switch device is used for avoiding generating electric arc during a circuit switching process. The trigger controller is used for generating trigger pulse so as to synchronously control the non-contact switch device and is connected with the non-contact switch device. By means of the 20KV vacuum switch cabinet non-contact switch, electric arc or spark does not occur during turn-on and turn off processes, impact on power grids and electrical equipment is reduced to the minimum degree, stability and reliability of power grids are enhanced, and service life of electrical equipment and high-voltage switches is prolonged. In addition, the 20KV vacuum switch cabinet non-contact switch is quick in operation, can be operated frequently, and is long in service life, high in reliability and capable of being used in special fireproof, anti-explosion and moisture-proof environments.
Description
Technical field
The present invention relates to appliance switch manufacturing technology field, refer to especially a kind of 20kV vacuum switch cabinet noncontacting switch.
Background technology
High-voltage switch gear mainly contains three kinds of forms such as oil-minimum breaker, vacuum circuit-breaker and SF6 circuit breaker at present, they all can produce electric arc in the switching circuitry processes, pressure arc extinguishing process can produce current break in various degree, causes overvoltage and electromagnetic interference phenomenon; When switching perception or capacitive load such as transformer, motor, capacitor group, can produce very large transient current, thereby the normal use of electrical network and electric equipment stability and electric equipment is exerted an influence.Therefore, existing switch all can not well satisfy job requirement to electrical network and the demanding occasion of electric equipment stable operation many, in the urgent need to a kind of novel switched task of finishing the work.At present domestic and international existing low pressure " noncontacting switch ", be widely adopted at aspects such as reactive power compensations, but the 20kV system does not also have this series products.
Summary of the invention
The present invention proposes a kind of 20kV vacuum switch cabinet noncontacting switch, has solved in the operating process of prior art high-voltage switch turn-on and turn-off and has produced electric arc, the problem that electrical network and electric equipment are impacted.
Technical scheme of the present invention is achieved in that
A kind of 20kV vacuum switch cabinet noncontacting switch comprises:
Contactless switching device is used for avoiding producing electric arc in the switching circuitry processes;
Trigger controller for generation of trigger impulse, with the described contactless switching device of Synchronization Control, is connected with described contactless switching device.
Preferably, described contactless switching device is Group of Silicon Controlled Rectifier.
Further, described Group of Silicon Controlled Rectifier comprises:
Controllable silicon, described silicon controlled quantity is some, some described controllable silicon in serial connections connect.
Further, described trigger controller comprises:
The external power supply unit is used for providing working power;
Signal input unit is used for receiving the signal that produces described trigger impulse;
Logic judgment unit is used for predetermined threshold value, and the signal of the described trigger impulse of generation that receives when described signal input unit produces the trigger impulse output signal during higher than described predetermined threshold value, is connected with described signal input unit;
The pulse output unit is used for receiving described trigger impulse output signal and producing described trigger impulse, is connected with described logic judgment unit;
The isolation amplifying unit is used for isolating exterior and disturbs and amplify described trigger impulse, with described contactless switching device be connected the pulse output unit and be connected.
Further, described trigger controller also comprises:
The definite value adjustment unit, the described predetermined threshold value for adjusting described logic judgment unit is connected with described logic judgment unit.
Further, described trigger controller also comprises:
The pulse output indicator is connected with described pulse output unit.
Power supply indicator is connected with described external power supply unit.
Control indicator light, be connected with described logic judgment unit.
Further, 20kV vacuum switch cabinet noncontacting switch of the present invention also comprises:
Display unit is used for remote monitoring, shows described trigger controller working status parameter, is connected with described trigger controller.
Preferably, described display unit is liquid crystal display.
Further, 20kV vacuum switch cabinet noncontacting switch of the present invention also comprises:
The high pressure harvester, be used for gathering described contactless switching device parameter and monitoring described contactless switching device running status, comprise the low-voltage current mutual inductor that is connected with described contactless switching device, with described low-voltage current mutual inductor be connected high pressure acquisition module that trigger controller is connected, with described high pressure acquisition module be connected that trigger controller is connected get the energy instrument transformer.
Beneficial effect of the present invention is:
1,20kV vacuum switch cabinet noncontacting switch of the present invention, electric arc or spark do not appear during turn-on and turn-off, impact to electrical network and electric equipment is reduced to minimum level, strengthen stability and the reliability of electrical network, improve the useful life of electric equipment and high-voltage switch gear, and be swift in motion, but frequent operation, life-span is long, and reliability is high, can be applicable to fire prevention, the particular surroundings such as explosion-proof, moistureproof.
2,20kV vacuum switch cabinet noncontacting switch of the present invention, its contactless switching device adopts controllable silicon as core, when voltage or current zero-crossing point moment switching, the switching time can not produce electric arc and higher transient current, no electromagnetic pollution less than 20ms, noiselessness, therefore can overcome the drawback of conventional high-tension switch, can effectively improve the stability of operation of power networks, become truly without arc environment protection-type high-voltage switch gear.
3,20kV vacuum switch cabinet noncontacting switch of the present invention, component placement is reasonable, and structural design is compact, wiring, easy for installation, debugging is simple.
Description of drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or description of the Prior Art, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structured flowchart of a kind of 20kV vacuum switch cabinet of the present invention noncontacting switch embodiment 1;
Fig. 2 is the structured flowchart of a kind of 20kV vacuum switch cabinet of the present invention noncontacting switch embodiment 2;
Fig. 3 is the structured flowchart of a kind of 20kV vacuum switch cabinet of the present invention noncontacting switch embodiment 3;
Fig. 4 is the structured flowchart of a kind of 20kV vacuum switch cabinet of the present invention noncontacting switch embodiment 4;
Fig. 5 is the structured flowchart of a kind of 20kV vacuum switch cabinet of the present invention noncontacting switch embodiment 5;
Fig. 6 is the structured flowchart of a kind of 20kV vacuum switch cabinet of the present invention noncontacting switch embodiment 6;
Fig. 7 is the structured flowchart of a kind of 20kV vacuum switch cabinet of the present invention noncontacting switch embodiment 7;
Fig. 8 is the circuit theory diagrams of the trigger controller of a kind of 20kV vacuum switch cabinet of the present invention noncontacting switch;
Fig. 9 is the integrated circuit figure of a kind of 20kV vacuum switch cabinet of the present invention noncontacting switch.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
As shown in Figure 1, in the first embodiment of a kind of 20kV vacuum switch cabinet of the present invention noncontacting switch, 20kV vacuum switch cabinet noncontacting switch comprises:
Contactless switching device is used for avoiding producing electric arc in the switching circuitry processes;
Trigger controller for generation of trigger impulse, with the described contactless switching device of Synchronization Control, is connected with described contactless switching device.
20kV vacuum switch cabinet noncontacting switch of the present invention, electric arc or spark do not appear during turn-on and turn-off, impact to electrical network and electric equipment is reduced to minimum level, strengthen stability and the reliability of electrical network, improve the useful life of electric equipment and high-voltage switch gear, and be swift in motion, but frequent operation, life-span is long, and reliability is high, can be applicable to fire prevention, the particular surroundings such as explosion-proof, moistureproof.
Wherein, preferably, described contactless switching device is Group of Silicon Controlled Rectifier.
As shown in Figure 2, in another embodiment of a kind of 20kV vacuum switch cabinet of the present invention noncontacting switch, described Group of Silicon Controlled Rectifier can comprise:
Controllable silicon, described silicon controlled quantity is some, some described controllable silicon in serial connections connect.
Wherein, controllable silicon is high-power silicon controlled rectifier, and preferred single only withstand voltage 8000V of reaching, normal on state current reach the controllable silicon of 4500A, certainly, according to requirement of engineering, can also select the controllable silicon of other withstand voltage and normal on state current.In addition, in the 20kV system, in every circuitry phase, silicon controlled quantity is preferably 6.
20kV vacuum switch cabinet noncontacting switch of the present invention, its contactless switching device adopts controllable silicon as core, when voltage or current zero-crossing point moment switching, the switching time can not produce electric arc and higher transient current, no electromagnetic pollution less than 20ms, noiselessness, therefore can overcome the drawback of conventional high-tension switch, can effectively improve the stability of operation of power networks, become truly without arc environment protection-type high-voltage switch gear.
As shown in Figure 3, in another embodiment of a kind of 20kV vacuum switch cabinet of the present invention noncontacting switch, described trigger controller can comprise:
The external power supply unit is used for providing working power;
Signal input unit is used for receiving the signal that produces described trigger impulse;
Logic judgment unit is used for predetermined threshold value, and the signal of the described trigger impulse of generation that receives when described signal input unit produces the trigger impulse output signal during higher than described predetermined threshold value, is connected with described signal input unit;
The pulse output unit is used for receiving described trigger impulse output signal and producing described trigger impulse, is connected with described logic judgment unit;
The isolation amplifying unit is used for isolating exterior and disturbs and amplify described trigger impulse, with described contactless switching device be connected the pulse output unit and be connected.
As shown in Figure 4, in another embodiment of a kind of 20kV vacuum switch cabinet of the present invention noncontacting switch, described trigger controller can also comprise:
The definite value adjustment unit, the described predetermined threshold value for adjusting described logic judgment unit is connected with described logic judgment unit.
As shown in Figure 5, in another embodiment of a kind of 20kV vacuum switch cabinet of the present invention noncontacting switch, described trigger controller can also comprise:
The pulse output indicator is connected with described pulse output unit.
Power supply indicator is connected with described external power supply unit.
Control indicator light, be connected with described logic judgment unit.
As shown in Figure 6, in another embodiment of a kind of 20kV vacuum switch cabinet of the present invention noncontacting switch, can also comprise:
Display unit is used for remote monitoring, shows described trigger controller working status parameter, is connected with described trigger controller.
Wherein, preferably, described display unit is liquid crystal display (LCD).Certainly, display unit can also be the device of other type, such as the PDP(plasma display), light-emitting diode display etc., the present invention does not limit this.
As shown in Figure 7, in another embodiment of a kind of 20kV vacuum switch cabinet of the present invention noncontacting switch, can also comprise:
The high pressure harvester, be used for gathering described contactless switching device parameter and monitoring described contactless switching device running status, comprise the low-voltage current mutual inductor that is connected with described contactless switching device, with described low-voltage current mutual inductor be connected high pressure acquisition module that trigger controller is connected, with described high pressure acquisition module be connected that trigger controller is connected get the energy instrument transformer.
Fig. 8 is the circuit theory diagrams of the trigger controller of 20kV vacuum switch cabinet noncontacting switch of the present invention; Fig. 9 is the integrated circuit figure of 20kV vacuum switch cabinet noncontacting switch of the present invention.Certainly; the integrated circuit of trigger controller and 20kV vacuum switch cabinet noncontacting switch can also have other conversion, alternative form; those of ordinary skills belong to the scope of protection of the invention not making the every other form that obtains under the creative work prerequisite.
20kV vacuum switch cabinet noncontacting switch of the present invention, component placement is reasonable, and structural design is compact, wiring, easy for installation, debugging is simple.
When the physical circuit of actual design 20kV vacuum switch cabinet of the present invention noncontacting switch, its step is as follows:
1, controllable silicon is selected and main circuit design.
According to the switch performance parameter, select silicon controlled pattern, parameter, quantity, determine the main circuit composition proposal.
Controllable silicon is P
1N
1P
2N
2Four layer of three end structure assembly has three PN junctions, during analysis principle, can it regard as by PNP pipe and a NPN pipe formed.
2, the design of reliable circuits for triggering.
According to controllable silicon and the compound mode thereof selected, calculate the circuits for triggering parameter, design circuit, and selector.
3, control information In-put design.
According to the switch demand for control, determine the input mode of Artificial Control signal and automatic control signal, design input circuit, and selector.
4, working power design.
According to the demand of controllable silicon and control circuit, the design work power supply, and select circuit and device.
5, use design.
According to requirement of engineering, determine Switch without electric arc operational environment (temperature, humidity, mechanical strength etc.), carry out Anti-interference Design, determine and the fit system of miscellaneous equipment, finally determine application conditions.
In addition, 20kV vacuum switch cabinet noncontacting switch of the present invention, its contactless switching device can also have other replacement scheme, for example:
1, the noncontacting switch of realizing with three terminal regulator.
Three terminal regulator is one of inexpensive device commonly used of being very familiar to of those skilled in the art.Whether the signal deciding that adds from control end with three terminal regulator and ground conducting, if conducting output power on, otherwise output is equivalent to disconnect.This circuit is very simple, also easily debugging, and the pressurizer that multiple voltage is arranged is applicable to the control of DC load for selecting.Shortcoming is that the tube voltage drop of pressurizer decreases output voltage, is not suitable for battery powered equipment.Select the low voltage difference three terminal regulator to make moderate progress.
2, based on the noncontacting switch of optocoupler triode and Darlington transistor.
Noncontacting switch based on phototriode is called as photoelectrical coupler (photocoupler).Light-emitting diode when input adds forward voltage (LED) is lighted, and phototriode can produce photoelectric current from the collector electrode supply load; When input added reverse voltage, LED was not luminous, made phototriode be in cut-off state, was equivalent to load open circuit.The operating rate of this device is higher, generally at Microsecond grade or faster.From operation principle, this class device is mainly used in DC load, also can be used to the constant fluctuating signal of transmission current direction.The operating rate of this device is higher, generally at Microsecond grade or faster.
Darlington transistor is the compound of two bipolar transistors.The great advantage of Darlington transistor is exactly to realize the multistage amplification of electric current; Shortcoming is that saturated tube voltage drop is larger.Due to two transistor common collectors, the saturation voltage of whole Darlington transistor equals the forward bias voltage of transistor Q2 and the saturation voltage sum of transistor Q1, and forward bias voltage is more much higher than saturation voltage, the saturation voltage of whole like this Darlington transistor is just special high, so the power consumption during the Darlington transistor conducting is higher.
3, based on the noncontacting switch of MOS or IGBT.
Because the coupled modes difference has a lot of classes, that for example adopts the photoelectric coupling mode is called optical coupling metal-oxide-semiconductor field effect transistor (OCMOS FET) based on the noncontacting switch of metal-oxide-semiconductor field effect transistor.
Inside circuit comprises the photovoltage unit, and when light-emitting diode was lighted, this unit so just increased the voltage between grid and source electrode to the gate capacitance charges of field effect transistor, makes the metal-oxide-semiconductor field effect transistor conducting, and switch is closed.When light-emitting diode extinguished, gate capacitance charges was no longer given in the photovoltage unit, and internal discharge switch auto-closing, forced the grid discharge, so gate source voltage descends rapidly, the field effect transistor cut-off, and switch disconnects.OCMOS FET has two types: a kind of is conducting type (maketype), is disconnection under normality; Another kind is disconnect type (breaktype), is conducting under normality.The conducting type that refers to herein.The optical coupling metal-oxide-semiconductor field effect transistor is AC/DC universal, and operating rate does not have photoelectrical coupler fast, is Millisecond, its output on state characteristic and input current cache oblivious.OCMOS FET can be strong with weak control, drives the electric current of peace level with the input current of milliampere level.Due to the feature that field effect transistor can two-way admittance, conducting resistance is low, it is mainly used in interrupting AC signal.
The above-mentioned just part replacement scheme of contactless switching device, as long as contactless switching device is realized its function, the present invention does not limit this.
The above is only preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, is equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (9)
1. a 20kV vacuum switch cabinet noncontacting switch, is characterized in that, comprising:
Contactless switching device is used for avoiding producing electric arc in the switching circuitry processes;
Trigger controller for generation of trigger impulse, with the described contactless switching device of Synchronization Control, is connected with described contactless switching device.
2. 20kV vacuum switch cabinet noncontacting switch according to claim 1, is characterized in that, described contactless switching device is Group of Silicon Controlled Rectifier.
3. 20kV vacuum switch cabinet noncontacting switch according to claim 2, is characterized in that, described Group of Silicon Controlled Rectifier comprises:
Controllable silicon, described silicon controlled quantity is some, some described controllable silicon in serial connections connect.
4. 20kV vacuum switch cabinet noncontacting switch according to claim 3, is characterized in that, described trigger controller comprises:
The external power supply unit is used for providing working power;
Signal input unit is used for receiving the signal that produces described trigger impulse;
Logic judgment unit is used for predetermined threshold value, and the signal of the described trigger impulse of generation that receives when described signal input unit produces the trigger impulse output signal during higher than described predetermined threshold value, is connected with described signal input unit;
The pulse output unit is used for receiving described trigger impulse output signal and producing described trigger impulse, is connected with described logic judgment unit;
The isolation amplifying unit is used for isolating exterior and disturbs and amplify described trigger impulse, with described contactless switching device be connected the pulse output unit and be connected.
5. 20kV vacuum switch cabinet noncontacting switch according to claim 4, is characterized in that, described trigger controller also comprises:
The definite value adjustment unit, the described predetermined threshold value for adjusting described logic judgment unit is connected with described logic judgment unit.
6. 20kV vacuum switch cabinet noncontacting switch according to claim 5, is characterized in that, described trigger controller also comprises:
The pulse output indicator is connected with described pulse output unit.
Power supply indicator is connected with described external power supply unit.
Control indicator light, be connected with described logic judgment unit.
7. 20kV vacuum switch cabinet noncontacting switch according to claim 6, is characterized in that, also comprises:
Display unit is used for remote monitoring, shows described trigger controller working status parameter, is connected with described trigger controller.
8. 20kV vacuum switch cabinet noncontacting switch according to claim 7, is characterized in that, described display unit is liquid crystal display.
9. 20kV vacuum switch cabinet noncontacting switch according to claim 8, is characterized in that, also comprises:
The high pressure harvester, be used for gathering described contactless switching device parameter and monitoring described contactless switching device running status, comprise the low-voltage current mutual inductor that is connected with described contactless switching device, with described low-voltage current mutual inductor be connected high pressure acquisition module that trigger controller is connected, with described high pressure acquisition module be connected that trigger controller is connected get the energy instrument transformer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013100062446A CN103095271A (en) | 2013-01-08 | 2013-01-08 | 20KV vacuum switch cabinet non-contact switch |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013100062446A CN103095271A (en) | 2013-01-08 | 2013-01-08 | 20KV vacuum switch cabinet non-contact switch |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106301306A (en) * | 2016-09-30 | 2017-01-04 | 华中科技大学 | One and the matching used active triggering device of Triggered Vacuum Switch |
| CN106559064A (en) * | 2015-09-30 | 2017-04-05 | 郑州建豪电器技术有限公司 | 35kV high-voltage thyristors series connection valve body electromagnetic actuator device |
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|---|---|---|---|---|
| CN1183021A (en) * | 1997-04-10 | 1998-05-27 | 黄远义 | Stepped starting type electronic ballast for high strength gas discharge lamp |
| JP2008243693A (en) * | 2007-03-28 | 2008-10-09 | Toyoda Gosei Co Ltd | Noncontact switch |
| CN201570360U (en) * | 2009-12-23 | 2010-09-01 | 中国电力科学研究院 | Electronic non-contact on-load capacitance regulation tapping switch |
| CN102055307A (en) * | 2010-10-08 | 2011-05-11 | 广州智光电气股份有限公司 | Trigger and online monitoring system for thyristor valve group |
| CN203014767U (en) * | 2013-01-08 | 2013-06-19 | 山东山大世纪科技有限公司 | Noncontact switch for 20 kV vacuum switch cabinet |
-
2013
- 2013-01-08 CN CN2013100062446A patent/CN103095271A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1183021A (en) * | 1997-04-10 | 1998-05-27 | 黄远义 | Stepped starting type electronic ballast for high strength gas discharge lamp |
| JP2008243693A (en) * | 2007-03-28 | 2008-10-09 | Toyoda Gosei Co Ltd | Noncontact switch |
| CN201570360U (en) * | 2009-12-23 | 2010-09-01 | 中国电力科学研究院 | Electronic non-contact on-load capacitance regulation tapping switch |
| CN102055307A (en) * | 2010-10-08 | 2011-05-11 | 广州智光电气股份有限公司 | Trigger and online monitoring system for thyristor valve group |
| CN203014767U (en) * | 2013-01-08 | 2013-06-19 | 山东山大世纪科技有限公司 | Noncontact switch for 20 kV vacuum switch cabinet |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106559064A (en) * | 2015-09-30 | 2017-04-05 | 郑州建豪电器技术有限公司 | 35kV high-voltage thyristors series connection valve body electromagnetic actuator device |
| CN106301306A (en) * | 2016-09-30 | 2017-01-04 | 华中科技大学 | One and the matching used active triggering device of Triggered Vacuum Switch |
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Application publication date: 20130508 |