CN203617719U - Electromagnetic zero-crossing switching low-voltage composite switch-based low-voltage power capacitor - Google Patents
Electromagnetic zero-crossing switching low-voltage composite switch-based low-voltage power capacitor Download PDFInfo
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- CN203617719U CN203617719U CN201320884146.8U CN201320884146U CN203617719U CN 203617719 U CN203617719 U CN 203617719U CN 201320884146 U CN201320884146 U CN 201320884146U CN 203617719 U CN203617719 U CN 203617719U
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- 239000003990 capacitor Substances 0.000 title claims abstract description 42
- 239000002131 composite material Substances 0.000 title abstract 2
- 238000001514 detection method Methods 0.000 claims abstract description 51
- 230000005540 biological transmission Effects 0.000 claims abstract description 30
- 230000008878 coupling Effects 0.000 claims abstract description 17
- 238000010168 coupling process Methods 0.000 claims abstract description 17
- 238000005859 coupling reaction Methods 0.000 claims abstract description 17
- 230000005291 magnetic effect Effects 0.000 claims abstract description 12
- 238000003860 storage Methods 0.000 claims description 10
- 230000001070 adhesive effect Effects 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 6
- 238000013500 data storage Methods 0.000 claims description 6
- 238000005070 sampling Methods 0.000 claims description 6
- 239000000853 adhesive Substances 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 3
- 239000013078 crystal Substances 0.000 claims description 3
- 230000005294 ferromagnetic effect Effects 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 230000000087 stabilizing effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 4
- 238000004146 energy storage Methods 0.000 abstract 2
- 238000009826 distribution Methods 0.000 description 2
- 230000001052 transient effect Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000005622 photoelectricity Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
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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 electromagnetic zero-crossing switching low-voltage composite switch-based low-voltage power capacitor. According to the low-voltage power capacitor, a reactive compensation device is connected into a power transmission line at the moment when the voltage of the power transmission line is detected to cross zero through a zero-crossing detection circuit, and the problem of inrush current in the connection process is solved; a magnetic latching relay of a zero-crossing switching switch is used for controlling the turning-on and the turning-off of a movable contact and a fixed contact, and has the advantages of quicker response and better connection effects compared with a current contactor; moreover, when a system normally runs, the power transmission line charges an energy storage capacitor through a current limiting resistor and a rectifying diode, and the energy storage capacitor is discharged to supply power to a photoelectric coupling circuit during the zero-crossing of the voltage, so that sufficient power can be supplied to the photoelectric coupling circuit, the additional connection of a power supply to the photoelectric coupling circuit is avoided to greatly reduce the power consumption, the turning-on accuracy during the zero crossing of the voltage is greatly improved, and heavy current impact on a main loop switch at the turning-on moment of the power capacitor is reduced.
Description
Technical field
The utility model relates to a kind of low voltage power capacitor, particularly the low voltage power capacitor based on electromagnetic type zero switching low-voltage combination switch.
Background technology
In recent years, along with the progressively raising of factory automation degree and people's quality of life, more electric equipment is constantly employed popularization, and user has higher requirement to the quality of power supply.In low-voltage distribution system, because power consumption equipment constantly increases, the reactive current in electrical network is increased, therefore, the electric energy consuming on electrical network transmission line also increases thereupon, finally causes grid supply quality to decline.In order to improve the stability of electric power system, guarantee power supply quality, conventionally in the low-voltage distribution system of user's side, install special reactive power compensator to reduce energy loss.
At present, reactive power compensator used has a variety of.Traditional compensating cabinet adopts A.C. contactor as fling-cut switch, and the moment of access electric capacity produces very large shoving, and causes the contact place of contactor to produce spark, easily burns contact, and in the time of disjunction electric capacity, may cling contact, causes contact can not draw away.After traditional mechanical contact fling-cut switch, there is contactless electronic switch, bidirectional thyristor, can realize zero cross fired, and what limiting capacitance device closed a floodgate and produces shoving, but switching circuit operation time has larger conduction voltage drop, brings electric energy loss and heating problem.
But, if so can reactive power compensator be incorporated in circuit in the moment of voltage zero-cross, can not produce and shove, can solve A.C. contactor and produce the problem of shoving, the safety of safeguards system for realizing zero passage detection when, need to be by photoelectrical coupler output zero cross signal be set, but, because photoelectrical coupler is subject to the restriction of semi-conducting material and manufacture craft up till now, there is drive current greatly and the large shortcoming of photoelectricity transmission efficiency discreteness in photoelectrical coupler, general controller is difficult to meet the driving needs of photoelectrical coupler, if can not guarantee photoelectrical coupler works under sufficient drive current, voltage zero-cross detects will produce larger error, in the time of access reactive power compensator, can produce larger surge current like this, useful life and reliability to load and switch itself are brought extremely adverse influence.
Utility model content
For addressing the above problem, the purpose of this utility model is to provide and can realizes operating passing zero, solves A.C. contactor moment produces shove and can realize the low voltage power capacitor based on electromagnetic type zero switching low-voltage combination switch of accurate zero passage detection.
The technical scheme that the invention for solving the technical problem adopts is:
Based on the low voltage power capacitor of electromagnetic type zero switching low-voltage combination switch, comprise the zero cross detection circuit for transmission line being carried out to zero passage detection, power capacitor, for controlling that power capacitor is incorporated to the operating passing zero switch of transmission line and for controlling the control circuit of operating passing zero switch, described zero cross detection circuit comprises the current transformer that is respectively used to detect transmission line electric current and voltage, voltage transformer, also comprise zero passage detection unit and the crystal oscillator being connected with zero passage detection unit, described current transformer is by current filtering circuit, current sampling circuit is connected with zero passage detection unit, described voltage transformer is by voltage filter circuit, voltage sampling circuit is connected with zero passage detection unit, described zero cross detection circuit also comprises the photoelectric coupling circuit for exporting zero passage detection signal, described photoelectric coupling circuit comprises photoelectrical coupler, current-limiting resistance, rectifier diode, described photoelectrical coupler comprises light-emitting diode and phototriode, described transmission line passes through current-limiting resistance successively, rectifier diode, light-emitting diode is connected on the output of zero passage detection unit, between the output of the output of described rectifier diode and zero passage detection unit, be connected in parallel to the storage capacitor that is used to photoelectrical coupler that power supply is provided, described control circuit comprises controls IC, be used to control IC that the clock chip of clock signal is provided, for storing the data storage of zero passage detection signal, electric capacity state display module and the RS485 communication interface communicating for interconnection network, described clock chip, data storage, electric capacity state display module, RS485 communication interface is connected with control IC, the described control input of IC and the output of phototriode are connected, described operating passing zero switch comprises support and is arranged at the armature on support, described operating passing zero switch also comprises fixed contact and the moving contact for being connected with transmission line, the two ends of power capacitor are connected on moving contact and transmission line, described moving contact is arranged on armature, on described support, be also provided with for by armature to the adhesive of fixed contact direction, the solenoid that moving contact is contacted with fixed contact, in described solenoid, be provided with for adding ferromagnetic iron core, between described armature and support, be provided with for making the extension spring of armature away from fixed contact, also comprise the magnetic latching relay for keeping solenoid adhesive effect, the output of described magnetic latching relay is connected with solenoid, input is connected with the output of controlling IC, also comprise power module, described power module is connected with zero passage detection unit and control IC respectively.
Further, between the output of described rectifier diode and the output of zero passage detection unit, be connected in parallel to voltage stabilizing didoe.
Further, described control circuit also comprises man-machine interface, and described man-machine interface is connected with keyboard and display.
Further, also comprise failure alarm circuit, described failure alarm circuit is connected with control IC.
The beneficial effects of the utility model are: the low voltage power capacitor based on electromagnetic type zero switching low-voltage combination switch that the utility model adopts, the moment that transmission line voltage zero-cross detected by zero cross detection circuit is incorporated to reactive power compensator in circuit, be incorporated to and in process, can not produce the problem of shoving, operating passing zero switch of the present utility model adopts the break-make of magnetic latching relay control moving contact and fixed contact, its response speed is faster compared with contactor, is incorporated to better effects if.And photoelectric coupling circuit of the present utility model, in the time that system is normally moved, transmission line charges to storage capacitor through current-limiting resistance and rectifier diode, during voltage zero-cross, discharge and provide power supply for photoelectric coupling circuit by storage capacitor, can provide enough power supplies for photoelectric coupling circuit, meeting it works normally, photoelectric coupling circuit does not need separately to connect power supply, can greatly reduce power consumption, this setting has improved the accuracy that voltage zero-cross is connected greatly, has reduced and has connected the heavy current impact of power capacitor moment to major loop switch.
Accompanying drawing explanation
Below in conjunction with accompanying drawing and example, the utility model is described in further detail.
Fig. 1 is electric current principle figure of the present utility model;
Fig. 2 is the structural representation of the utility model operating passing zero switch.
Embodiment
With reference to Fig. 1-Fig. 2, low voltage power capacitor based on electromagnetic type zero switching low-voltage combination switch of the present utility model, comprise the zero cross detection circuit 1 for transmission line 101 being carried out to zero passage detection, power capacitor 2, for controlling that power capacitor 2 is incorporated to the operating passing zero switch 3 of transmission line 101 and for controlling the control circuit 4 of operating passing zero switch 3, described zero cross detection circuit 1 comprises the current transformer 11 that is respectively used to detect transmission line 101 electric currents and voltage, voltage transformer 12, also comprise zero passage detection unit 13 and be connected the crystal oscillator 14 for time signal is provided with zero passage detection unit 13, described current transformer 11 is by current filtering circuit 15, current sampling circuit 16 is connected with zero passage detection unit 13, described voltage transformer 12 is by voltage filter circuit 17, voltage sampling circuit 18 is connected with zero passage detection unit 13, for zero passage detection unit 13 provides stable voltage, current signal, described zero cross detection circuit 1 also comprises the photoelectric coupling circuit 5 for exporting zero passage detection signal, described photoelectric coupling circuit 5 comprises photoelectrical coupler 51, current-limiting resistance R1, rectifier diode D1, described photoelectrical coupler 51 comprises light-emitting diode D2 and phototriode T1, described transmission line 101 is successively by current-limiting resistance R1, rectifier diode D1, light-emitting diode D2 is connected on the output of zero passage detection unit 13, between the output of the output of described rectifier diode D1 and zero passage detection unit 13, be connected in parallel to the storage capacitor C1 that is used to photoelectrical coupler 51 that power supply is provided, described control circuit 4 comprises controls IC41, be used to control IC41 that the clock chip 42 of clock signal is provided, for storing the data storage 43 of zero passage detection signal, electric capacity state display module 44 and the RS485 communication interface 45 communicating for interconnection network, described clock chip 42, data storage 43, electric capacity state display module 44, RS485 communication interface 45 is connected with control IC41, the input of described control IC41 is connected with the output of phototriode T1, described operating passing zero switch 3 comprises support 31 and is arranged at the armature 32 on support 31, described operating passing zero switch 3 also comprises fixed contact 33 and the moving contact 34 for being connected with transmission line 101, the two ends of power capacitor 2 are connected on moving contact 34 and transmission line 101, described moving contact 34 is arranged on armature 32, on described support 31, be also provided with for by armature 32 to fixed contact 33 direction adhesives, the solenoid 35 that moving contact 34 is contacted with fixed contact 33, in described solenoid 35, be provided with for adding ferromagnetic iron core 36, between described armature 32 and support 31, be provided with for making the extension spring 37 of armature 32 away from fixed contact 33, also comprise the magnetic latching relay 38 for keeping solenoid 35 adhesive effects, the output of described magnetic latching relay 38 is connected with solenoid 35, input is connected with the output of controlling IC41, also comprise power module 6, described power module 6 is connected with zero passage detection unit 13 and control IC41 respectively.
In the time that system is normally moved, transmission line 101 is by current-limiting resistance R1, rectifier diode D1 charges to storage capacitor C1, in the time that needs are incorporated to power capacitor 2, zero passage detection unit 13 obtains current information and the information of voltage on transmission line 101, light-emitting diode D2 in the transient switching photoelectrical coupler 51 of voltage zero-cross, light-emitting diode D2 provides power supply light emitting by storage capacitor C1, phototriode T1 output zero passage detection signal is to controlling IC41, control IC41 and connect solenoid 35 by magnetic latching relay 38, solenoid 35 produces magnetic force by armature 32 adhesives, at this moment the moving contact 34 on armature 32 touches with fixed contact 33, power capacitor 2 is incorporated on transmission line 101, in the time that needs disconnect power capacitor 2, zero passage detection unit 13 is at the transient switching photoelectrical coupler 51 of current over-zero, allow the magnetic latching relay 38 of operating passing zero switch 3 disconnect, solenoid 35 loses magnetism, effect lower armature 32 in extension spring 37 disconnects fixed contact 33 away from fixed contact 33, thereby disconnect power capacitor 2.
The utility model detects that by zero cross detection circuit 1 moment of transmission line 101 voltage zero-cross is incorporated to reactive power compensator in circuit, be incorporated to and in process, can not produce the problem of shoving, operating passing zero switch 3 of the present utility model adopts magnetic latching relay 38 to control the break-make of moving contact 34 and fixed contact 33, its response speed is faster compared with contactor, is incorporated to better effects if.And photoelectric coupling circuit 5 of the present utility model, in the time that system is normally moved, transmission line 101 charges to storage capacitor C1 through current-limiting resistance R1 and rectifier diode D1, during voltage zero-cross, provide power supply by storage capacitor C1 electric discharge for photoelectric coupling circuit 5, can provide enough power supplies for photoelectric coupling circuit 5, meeting it works normally, photoelectric coupling circuit 5 does not need separately to connect power supply, can greatly reduce power consumption, this setting has improved the accuracy that voltage zero-cross is connected greatly, reduce and connected the heavy current impact of 2 moments of power capacitor to major loop switch.
Further, in order to stablize the voltage of storage capacitor C1, state between the output of rectifier diode D1 and the output of zero passage detection unit 13 and be connected in parallel to voltage stabilizing didoe Z1.
Further, described control circuit 4 also comprises man-machine interface 46, and described man-machine interface 46 is connected with keyboard 7 and display 8.Can facilitate staff that control circuit 4 is set, debugged and safeguards by connecting keyboard 7 and display 8.
Further, also comprise failure alarm circuit 47, described failure alarm circuit 47 is connected with control IC41.In the time breaking down, can pass through failure alarm circuit 47 and alarm, remind relevant staff to safeguard.
The above, be preferred embodiment of the present utility model, and the utility model is not limited to above-mentioned execution mode, as long as it reaches technique effect of the present utility model with identical means, all should belong to protection range of the present utility model.
Claims (4)
1. the low voltage power capacitor based on electromagnetic type zero switching low-voltage combination switch, it is characterized in that: comprise the zero cross detection circuit (1) for transmission line being carried out to zero passage detection, power capacitor (2), be used for controlling that power capacitor (2) is incorporated to the operating passing zero switch (3) of transmission line and for controlling the control circuit (4) of operating passing zero switch (3), described zero cross detection circuit (1) comprises the current transformer (11) that is respectively used to detect transmission line electric current and voltage, voltage transformer (12), also comprise zero passage detection unit (13) and the crystal oscillator (14) being connected with zero passage detection unit (13), described current transformer (11) is by current filtering circuit (15), current sampling circuit (16) is connected with zero passage detection unit (13), described voltage transformer (12) is by voltage filter circuit (17), voltage sampling circuit (18) is connected with zero passage detection unit (13), described zero cross detection circuit (1) also comprises the photoelectric coupling circuit (5) for exporting zero passage detection signal, described photoelectric coupling circuit (5) comprises photoelectrical coupler (51), current-limiting resistance (R1), rectifier diode (D1), described photoelectrical coupler (51) comprises light-emitting diode (D2) and phototriode (T1), described transmission line is successively by current-limiting resistance (R1), rectifier diode (D1), light-emitting diode (D2) is connected on the output of zero passage detection unit (13), between the output of the output of described rectifier diode (D1) and zero passage detection unit (13), be connected in parallel to the storage capacitor (C1) that is used to photoelectrical coupler (51) that power supply is provided, described control circuit (4) comprises controls IC(41), be used to and control IC(41) clock chip (42) of clock signal is provided, for storing the data storage (43) of zero passage detection signal, electric capacity state display module (44) and the RS485 communication interface (45) communicating for interconnection network, described clock chip (42), data storage (43), electric capacity state display module (44), RS485 communication interface (45) and control IC(41) be connected, described control IC(41) input be connected with the output of phototriode (T1), described operating passing zero switch (3) comprises support (31) and is arranged at the armature (32) on support (31), described operating passing zero switch (3) also comprises fixed contact (33) and the moving contact (34) for being connected with transmission line, the two ends of power capacitor (2) are connected on moving contact (34) and transmission line, described moving contact (34) is arranged on armature (32), on described support (31), be also provided with for by armature (32) to fixed contact (33) direction adhesive, the solenoid (35) that moving contact (34) is contacted with fixed contact (33), in described solenoid (35), be provided with for adding ferromagnetic iron core (36), between described armature (32) and support (31), be provided with for making the extension spring (37) of armature (32) away from fixed contact (33), also comprise the magnetic latching relay (38) for keeping solenoid (35) adhesive effect, the output of described magnetic latching relay (38) is connected with solenoid (35), input and control IC(41) output be connected, also comprise power module (6), described power module (6) respectively with zero passage detection unit (13) and control IC(41) be connected.
2. the low voltage power capacitor based on electromagnetic type zero switching low-voltage combination switch according to claim 1, is characterized in that: between the output of described rectifier diode (D1) and the output of zero passage detection unit (13), be connected in parallel to voltage stabilizing didoe (Z1).
3. the low voltage power capacitor based on electromagnetic type zero switching low-voltage combination switch according to claim 1, it is characterized in that: described control circuit (4) also comprises man-machine interface (46), described man-machine interface (46) is connected with keyboard (7) and display (8).
4. the low voltage power capacitor based on electromagnetic type zero switching low-voltage combination switch according to claim 1, is characterized in that: also comprise failure alarm circuit (47), described failure alarm circuit (47) and control IC(41) be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320884146.8U CN203617719U (en) | 2013-12-30 | 2013-12-30 | Electromagnetic zero-crossing switching low-voltage composite switch-based low-voltage power capacitor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320884146.8U CN203617719U (en) | 2013-12-30 | 2013-12-30 | Electromagnetic zero-crossing switching low-voltage composite switch-based low-voltage power capacitor |
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| CN203617719U true CN203617719U (en) | 2014-05-28 |
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| CN201320884146.8U Expired - Lifetime CN203617719U (en) | 2013-12-30 | 2013-12-30 | Electromagnetic zero-crossing switching low-voltage composite switch-based low-voltage power capacitor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104836239A (en) * | 2015-04-09 | 2015-08-12 | 河北工业大学 | Low-voltage intelligent synchronous switch |
| CN112230163A (en) * | 2020-08-31 | 2021-01-15 | 煤科集团沈阳研究院有限公司 | Low-voltage alternating-current electric appliance on-off inspection expected parameter adjusting system and parameter adjusting method |
| CN114002383A (en) * | 2021-10-26 | 2022-02-01 | 河南驰诚电气股份有限公司 | Acousto-optic integrated independent wireless gas detector system |
| CN114620825A (en) * | 2022-05-07 | 2022-06-14 | 深圳市中丝贸科技有限公司 | Online sewage treatment system of high in clouds chlorine residue and PH value data control |
-
2013
- 2013-12-30 CN CN201320884146.8U patent/CN203617719U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104836239A (en) * | 2015-04-09 | 2015-08-12 | 河北工业大学 | Low-voltage intelligent synchronous switch |
| CN104836239B (en) * | 2015-04-09 | 2016-10-26 | 河北工业大学 | Low-voltage intelligent synchro switch |
| CN112230163A (en) * | 2020-08-31 | 2021-01-15 | 煤科集团沈阳研究院有限公司 | Low-voltage alternating-current electric appliance on-off inspection expected parameter adjusting system and parameter adjusting method |
| CN112230163B (en) * | 2020-08-31 | 2022-05-20 | 中煤科工集团沈阳研究院有限公司 | Low-voltage alternating-current electric appliance on-off inspection expected parameter adjusting system and parameter adjusting method |
| CN114002383A (en) * | 2021-10-26 | 2022-02-01 | 河南驰诚电气股份有限公司 | Acousto-optic integrated independent wireless gas detector system |
| CN114002383B (en) * | 2021-10-26 | 2022-05-20 | 河南驰诚电气股份有限公司 | Integrated control switch for controlling electromagnetic valve linked with gas detector |
| CN114620825A (en) * | 2022-05-07 | 2022-06-14 | 深圳市中丝贸科技有限公司 | Online sewage treatment system of high in clouds chlorine residue and PH value data control |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140528 |
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| CX01 | Expiry of patent term |