CN201774257U - Intelligent electronic combination switch - Google Patents
Intelligent electronic combination switch Download PDFInfo
- Publication number
- CN201774257U CN201774257U CN2010202178044U CN201020217804U CN201774257U CN 201774257 U CN201774257 U CN 201774257U CN 2010202178044 U CN2010202178044 U CN 2010202178044U CN 201020217804 U CN201020217804 U CN 201020217804U CN 201774257 U CN201774257 U CN 201774257U
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- Prior art keywords
- module
- thyristor
- magnetic latching
- latching relay
- combination switch
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
Abstract
The utility model discloses an intelligent electronic combination switch. The switch comprises a thyristor and magnetic latching relay parallel module connected between a power supply module and a capacitor bank, a control module, a detection module and a sequential control module which are electrically connected with the thyristor and magnetic latching relay parallel module, a central processing unit (CPU) module electrically connected with a peripheral controller, and a capacitor terminal voltage detection module, wherein the CPU module is respectively and electrically connected with the control module, the detection module and the sequential control module; the thyristor and magnetic latching relay parallel module is formed by parallelly connecting a thyristor and a magnetic latching relay; and the capacitor terminal voltage detection module is electrically connected between the capacitor bank and the CPU module. The intelligent electronic combination switch can prevent the thyristor from being damaged effectively so as to prevent reactive power releasing.
Description
Technical field
The utility model relates to a kind of electronic device, relates in particular to a kind of smart electronics combination switch.
Background technology
Traditional reactive-load compensation capacitor switching device is broadly divided into two kinds of A.C. contactor, controllable silicon electronic switches.But all there is certain defective in two kinds of switches, and A.C. contactor can produce very big shoving and overvoltage when capacitor input and excision, and the high pressure of transient state and switching impulse current can cause capacitor insulation puncture, probe of contactor scaling loss; Though the controllable silicon electronic switch has solved problems such as shoving in the capacitor switching process, overvoltage, breaking arc, it dispels the heat difficult, need add that the auxiliary heat dissipation device is many, complex structure, cost height, take up room greatly.
The conventional composite switch is a kind of capacitor switching device of striving solving above-mentioned two kinds of switch defectives, it merges integral body of formation to thyristor and relay, utilize the easy control and the contactless characteristic of thyristor, thyristor is operated in the capacitor switching transient process of moment, play suppress to shove, overvoltage and arcing effect, and can realize quick switching.Utilize relay when reliable closure, characteristics such as its main contacts contact resistance is little, the conducting capacity is big, pressure drop is little, power consumption is little, safe and reliable, make in the steady-state process that it is operated in after the capacitor input and excision is preceding, play capacitor provides main channel effect from quadergy to electrical network.
Yet, thyristor makes the conventional composite switch also damage than being easier to the sensitiveness of dv/dt, when bidirectional thyristor punctures, can't play the effect of switch, capacitor will directly insert electrical network, when idle compensating control sends the order of excision capacitor, can't excise the capacitor group, cause idle sending.Therefore, demand urgently providing a kind of improved smart electronics combination switch to overcome above-mentioned defective.
The utility model content
The technical problems to be solved in the utility model is to provide a kind of smart electronics combination switch, and this smart electronics combination switch can prevent effectively that thyristor from damaging, and then prevents idle sending.
In order to solve the problems of the technologies described above, the utility model provides a kind of smart electronics combination switch, it comprises thyristor and the magnetic latching relay module in parallel that is connected between power module and the capacitor group, the control module that is electrically connected with described thyristor and magnetic latching relay module in parallel, detection module and time-sequence control module, be used for the CPU module that is electrically connected with peripheral control unit, and capacitor terminal voltage detection module, described CPU module respectively with described control module, detection module and time-sequence control module are electrically connected, described thyristor and magnetic latching relay module in parallel is formed in parallel by thyristor and magnetic latching relay, and described capacitor terminal voltage detection module is electrically connected between described capacitor group and the described CPU module.
Compared with prior art, smart electronics combination switch of the present utility model is implemented the terminal voltage of monitoring capacitor by capacitor terminal voltage detection module, can really realize operating passing zero to guarantee thyristor, thereby reduce the breakdown probability of thyristor to greatest extent, so guaranteed thyristor reliability, prevent the idle useful life of sending and having improved switching device.In addition, described CPU module is by the running status of detection module monitoring thyristor and magnetic latching relay, and before dropping into capacitor, if detect thyristor or magnetic latching relay fault, then CPU module refusal sends close command.
Preferably, described smart electronics combination switch also comprises the anti-idle contactor that send, and describedly anti-ly idlely send contactor to be serially connected with between described power module and described thyristor and the magnetic latching relay module in parallel and with described CPU module to be electrically connected.Under the situation that thyristor damages, can put the idle contactor that send by this and disconnect the capacitor group, further prevent idle sending.
Preferably, described smart electronics combination switch also comprises the voltage sample passage, and described CPU is electrically connected by the mains side of described voltage sample passage with described thyristor and magnetic latching relay module in parallel.Described CPU module is by the ruuning situation of voltage sample channel monitoring thyristor, input power supply and load; to realize functions such as the protection of voltage failure defective, supply voltage open-phase protection, under-voltage protection, no-load protection, power-failure protecting, improve the defencive function of the utility model smart electronics combination switch.
Preferably, described CPU module is electrically connected with peripheral control unit by the light-coupled isolation module, isolates by the photoelectricity of control circuit and main circuit, improves the reliability of smart electronics combination switch.
Preferably, described smart electronics combination switch also comprises alarm module, and described alarm module is electrically connected with described CPU module.When detecting the thyristor damage, send alarm signal and inform the staff.
Preferably, described thyristor comprises the single-phase thyristor of two reverse parallel connections, and described magnetic latching relay is a contact relay.The single-phase thyristor of two reverse parallel connections constitutes alternating current switching circuit, and the CPU module is controlled the switching order and the sequential of described thyristor and magnetic latching relay by time-sequence control module.Described thyristor module in parallel with magnetic latching relay is born operating passing zero in the moment of dropping into and excise by thyristor, be that voltage zero-cross drops into constantly, current over-zero excises constantly, thyristor ON time very short (not producing heating), afterwards, be converted to magnetic latching relay and connect operation.Therefore, it has the advantage of thyristor TSC switch operating passing zero no-flashy-flow, has the characteristics of the no power consumption of A.C. contactor operation again, has avoided the defective of thyristor operation heating and contactor switching spark simultaneously again, is comparatively desirable fling-cut switch.Particularly, because magnetic latching relay all do not shove and spark in the moment of adhesive and disconnection, its appliance life can be far above the life-span of designing, so this smart electronics combination switch has the very long mean free error time.
Further, described thyristor end also is connected to the capacitance-resistance absorption circuit, to reduce the impact of dv/dt to thyristor.Described thyristor drives to guarantee zero cross fired by the MOC3083 thyristor driving circuit, realizes the no-flashy-flow switching.
Alternatively, described thyristor and magnetic latching relay module in parallel has a plurality of, and each described thyristor and magnetic latching relay module in parallel is to there being a group capacitor group.Owing to have many group thyristors and magnetic latching relay module in parallel and capacitor group, thyristor damage when a thyristor and magnetic latching relay module in parallel, under the situation that causes its corresponding capacitor group to drop into always and can't withdraw from, when needs reduced power factor, the capacitor group that can withdraw from other group was to reach the alarm signal that requires concurrent relevant thyristor to damage of target power factor.
By following description also in conjunction with the accompanying drawings, it is more clear that the utility model will become, and these accompanying drawings are used to explain embodiment of the present utility model.
Description of drawings
Fig. 1 is the structural representation of an embodiment of the utility model smart electronics combination switch.
Embodiment
With reference now to accompanying drawing, describe embodiment of the present utility model, the similar elements label is represented similar elements in the accompanying drawing.As mentioned above, the utility model provides a kind of smart electronics combination switch, and this smart electronics combination switch can prevent effectively that thyristor from damaging, and then prevents idle sending.
Elaborate the technical scheme of the utility model embodiment below in conjunction with accompanying drawing.As shown in Figure 1, smart electronics combination switch of the present utility model comprises thyristor and the magnetic latching relay module 3 in parallel that is connected between power module 1 and the capacitor group 2, the control module 4 that is electrically connected with described thyristor and magnetic latching relay module 3 in parallel, detection module 5 and time-sequence control module 6, be used for the CPU module 7 that is electrically connected with peripheral control unit 12, and capacitor terminal voltage detection module 8, described CPU module 7 respectively with described control module 4, detection module 5 and time-sequence control module 6 are electrically connected, described thyristor and magnetic latching relay module 3 in parallel is formed in parallel by thyristor 31 and magnetic latching relay 32, described capacitor terminal voltage detection module 8 is electrically connected between described capacitor group 2 and the described CPU module 7, and the terminal voltage of the described capacitor group 2 that is used to sample also sends to described CPU module 7.Particularly, described CPU module 7 can be the ARM single-chip microcomputer.
Further, described thyristor 31 comprises the single-phase thyristor of two reverse parallel connections, and described magnetic latching relay 32 can be contact relay.The single-phase thyristor of two reverse parallel connections constitutes alternating current switching circuit, and CPU module 7 is by the switching order and the sequential of described time-sequence control module 6 described thyristors 31 of control and magnetic latching relay 32.Described thyristor module 3 in parallel with magnetic latching relay is born operating passing zero in the moment of dropping into and excise by thyristor 31, be that voltage zero-cross drops into constantly, current over-zero excises constantly, thyristor 31 ON time very short (not producing heating), afterwards, be converted to magnetic latching relay 32 and connect operation.Therefore, it has the advantage of thyristor TSC switch operating passing zero no-flashy-flow, has the characteristics of the no power consumption of A.C. contactor operation again, has avoided the defective of thyristor operation heating and contactor switching spark simultaneously again, is comparatively desirable fling-cut switch.Particularly, because magnetic latching relay all do not shove and spark in the moment of adhesive and disconnection, its appliance life can be far above the life-span of designing, so this smart electronics combination switch has the very long mean free error time.
As preferred embodiment of the present utility model, the smart electronics combination switch of present embodiment also comprises the anti-idle contactor 9 that send, and describedly anti-ly idlely send contactor 9 to be serially connected with between described power module 1 and described thyristor and the magnetic latching relay module 3 in parallel and with described CPU module 7 to be electrically connected.When described CPU module 7 detects by detection module 5 under the situation that thyristor 31 damages, can control this and put the idle contactor 9 that send and disconnect capacitor groups 2, further prevent idle sending.
Further, the smart electronics combination switch of present embodiment also comprises the voltage sample path 10, described CPU 7 is electrically connected by the mains side of described voltage sample path 10 with described thyristor and magnetic latching relay module 7 in parallel, i.e. input described in the figure.Described CPU module 7 is by the ruuning situation of voltage sample path 10 monitoring thyristor, input power supply and load; to realize functions such as the protection of voltage failure defective, supply voltage open-phase protection, under-voltage protection, no-load protection, power-failure protecting, improve the defencive function of the utility model smart electronics combination switch.Particularly, when the voltage failure open-phase protection was powered for the system voltage phase shortage, the switch refusal was closed; Connect the back and then move back throwing automatically if detect phase shortage.When the supply voltage open-phase protection was powered for the working power phase shortage, the switch refusal was closed; Connect the back and then move back throwing automatically if phase shortage occurs; Under-voltage protection is 20% o'clock of voltage≤rated voltage (220V), and the switch refusal is closed; No-load protection switch refusal when not connecing load is closed; When power-failure protecting was met unexpected the power failure for connecting the back, automatic trip disconnected.
Preferably, described CPU module 7 can be electrically connected with peripheral control unit 12 by light-coupled isolation module 11, by the photoelectricity of control circuit and main circuit is isolated, improves the reliability of smart electronics combination switch.Control signal is delivered on the ARM single-chip processor i/o mouth through low-pass filter circuit after isolating through rapid light coupling again, the variation of single-chip microcomputer timing scan I/O mouth, utilize software filtering remove to disturb again, determine after the correct information folding according to this information determine switch.
Preferably, described smart electronics combination switch can also comprise alarm module (figure does not show), and described alarm module is electrically connected with described CPU module.When detecting the thyristor damage, send alarm signal and inform the staff.
Alternatively, described thyristor 31 ends also are connected to capacitance-resistance absorption circuit (figure does not show), to reduce the impact of dv/dt to thyristor.Described thyristor 31 drives to guarantee zero cross fired by the MOC3083 thyristor driving circuit, realizes the no-flashy-flow switching.Only in CPU module 7, promptly under the situation that the input signal that sends of ARM single-chip microcomputer and this phase voltage zero passage condition of electrical network are set up simultaneously, the just conducting of two optocouplers, triggering signal is given controllable silicon, allows the controllable silicon conducting.Because this partial content is a prior art, so omit detailed description at this.
The smart electronics combination switch of present embodiment is applicable to the frequent switching of capacitor in the reactive compensation complete device.Its course of work is as follows:
Drop into course of action: 1. the smart electronics combination switch receives that peripheral control unit 12 sends when dropping into the capacitor order, drops into thyristor 31 by the The Trigger of Bidirectional Triode Thyristor circuit; 2. control magnetic latching relays 32 adhesives by time-sequence control module 6 after thyristor 31 conductings, make the double switch parallel operation in same phase; 3. after magnetic latching relay 32 reliable closures, excise the input signal of thyristor 31, thyristor 31 is opened from circuit interruption by self-characteristic, allows magnetic latching relay 32 work alone, and so far finishes and drops into action.
The excision course of action: 1. the smart electronics combination switch is received when peripheral control unit 12 sends the order of excision capacitor, drops into thyristor 31 by the The Trigger of Bidirectional Triode Thyristor circuit; 2. through 40～60ms, treat thyristor 31 working stabilities after, CPU module 7 is by time-sequence control module 6 excision magnetic latching relays 32; 3. through the i.e. 20～40ms of 1～2 power frequency period, treat that magnetic latching relay 32 disconnects fully after, excision thyristor 31 drops into signals, thyristor 31 leans on self-characteristic to open from circuit interruption.
The utility model is for avoiding thyristor frequently breakdown, and the reliability of assurance device has adopted: 1. at the thyristor end and connect the capacitance-resistance absorption circuit, to reduce the impact of dv/dt to thyristor; 2. system side guarantees zero cross fired by the MOC3083 thyristor driving circuit, realizes the no-flashy-flow switching.3. when thyristor drops into, by ARM single-chip microcomputer built-in A/D passage and multicircuit switch monitoring to voltage on the corresponding capacitor group, by setting corresponding threshold voltage, avoid when having higher residual voltage on the capacitor, causing that thyristor is breakdown when triggering and conducting may, improve the useful life and the reliability of the action of smart electronics combination switch, prevent idle sending.
Alternatively, described thyristor and magnetic latching relay module 3 in parallel has a plurality of (figure does not show), and each described thyristor and magnetic latching relay 3 pairs of modules in parallel should have a group capacitor group 2.Owing to have many group thyristors and magnetic latching relay module 3 in parallel and capacitor group 2, thyristor 31 damages when a thyristor and magnetic latching relay module 3 in parallel, under the situation that causes its corresponding capacitor group 2 to drop into always and can't withdraw from, when needs reduced power factor, the capacitor group that can withdraw from other group was to reach the alarm signal that requires concurrent relevant thyristor to damage of target power factor.If after withdrawing from all capacitor groups that can withdraw from, still exceed the target power factor or cause idle sending, then CPU module 7 triggers and prevents that the idle contactor 9 that send moves, and disconnects the input of idle the complete sets of equipment by force, and CPU module 7 is sent alarm signal simultaneously.
Claims (10)
1. smart electronics combination switch, comprise the thyristor and the magnetic latching relay module in parallel that are connected between power module and the capacitor group, the control module that is electrically connected with described thyristor and magnetic latching relay module in parallel, detection module and time-sequence control module, and be used for the CPU module that is electrically connected with peripheral control unit, described CPU module respectively with described control module, detection module and time-sequence control module are electrically connected, described thyristor and magnetic latching relay module in parallel is formed in parallel by thyristor and magnetic latching relay, it is characterized in that: also comprise capacitor terminal voltage detection module, described capacitor terminal voltage detection module is electrically connected between described capacitor group and the described CPU module.
2. smart electronics combination switch according to claim 1, it is characterized in that: also comprise the anti-idle contactor that send, describedly anti-ly idlely send contactor to be serially connected with between described power module and described thyristor and the magnetic latching relay module in parallel and to be electrically connected with described CPU module.
3. smart electronics combination switch according to claim 1 is characterized in that: described CPU module is electrically connected with peripheral control unit by the light-coupled isolation module.
4. smart electronics combination switch according to claim 1 is characterized in that: also comprise the voltage sample passage, described CPU is electrically connected by the mains side of described voltage sample passage with described thyristor and magnetic latching relay module in parallel.
5. smart electronics combination switch according to claim 1 is characterized in that: also comprise alarm module, described alarm module is electrically connected with described CPU module.
6. smart electronics combination switch according to claim 1 is characterized in that: described thyristor comprises the single-phase thyristor of two reverse parallel connections, and described magnetic latching relay is a contact relay.
7. according to each described smart electronics combination switch of claim 1-6, it is characterized in that: described CPU module is the ARM single-chip microcomputer.
8. according to each described smart electronics combination switch of claim 1-6, it is characterized in that: described thyristor end also is connected to the capacitance-resistance absorption circuit.
9. according to each described smart electronics combination switch of claim 1-6, it is characterized in that: described thyristor drives by the MOC3083 thyristor driving circuit.
10. according to each described smart electronics combination switch of claim 1-6, it is characterized in that: described thyristor and magnetic latching relay module in parallel has a plurality of, and each described thyristor and magnetic latching relay module in parallel is to there being a group capacitor group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202178044U CN201774257U (en) | 2010-06-01 | 2010-06-01 | Intelligent electronic combination switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202178044U CN201774257U (en) | 2010-06-01 | 2010-06-01 | Intelligent electronic combination switch |
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| Publication Number | Publication Date |
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| CN201774257U true CN201774257U (en) | 2011-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010202178044U Expired - Fee Related CN201774257U (en) | 2010-06-01 | 2010-06-01 | Intelligent electronic combination switch |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103050982A (en) * | 2012-11-30 | 2013-04-17 | 浙江工业大学 | Intelligent control switching device suitable for 30Kvar three-phase compensation and reactive compensation |
| CN110350370A (en) * | 2019-07-17 | 2019-10-18 | 南京伊科诺电气科技有限公司 | A kind of intelligent socket and its operating passing zero method |
-
2010
- 2010-06-01 CN CN2010202178044U patent/CN201774257U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103050982A (en) * | 2012-11-30 | 2013-04-17 | 浙江工业大学 | Intelligent control switching device suitable for 30Kvar three-phase compensation and reactive compensation |
| CN110350370A (en) * | 2019-07-17 | 2019-10-18 | 南京伊科诺电气科技有限公司 | A kind of intelligent socket and its operating passing zero method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: HUBEI JOINWELL ELECTRICAL TECHNOLOGY CO., LTD. Free format text: FORMER NAME: HUBEI YANGTZE RIVER GENERAL AUTOMATION CO., LTD. |
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| CP03 | Change of name, title or address |
Address after: 430070 Hubei province Wuhan City Baishazhou city building 4 workshop of small and medium sized enterprises Patentee after: Hubei Joinwell Electrical Technology Co., Ltd. Address before: 430223 building, building 4, Optics Valley Industrial Park, East Lake Development Zone, Wuhan, Hubei Patentee before: Hubei Yangtze River General Automation Co., Ltd. |
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| DD01 | Delivery of document by public notice |
Addressee: Hubei Joinwell Electrical Technology Co., Ltd. Document name: Notification to Pay the Fees |
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| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Hubei Joinwell Electrical Technology Co., Ltd. Document name: Notification of Termination of Patent Right |
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| DD01 | Delivery of document by public notice | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110323 Termination date: 20180601 |
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| CF01 | Termination of patent right due to non-payment of annual fee |