CN201898340U - Dynamic combination switch - Google Patents
Dynamic combination switch Download PDFInfo
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- CN201898340U CN201898340U CN2010206525956U CN201020652595U CN201898340U CN 201898340 U CN201898340 U CN 201898340U CN 2010206525956 U CN2010206525956 U CN 2010206525956U CN 201020652595 U CN201020652595 U CN 201020652595U CN 201898340 U CN201898340 U CN 201898340U
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- circuit
- control
- thyristor
- control circuit
- 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
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Abstract
The utility model discloses a combination switch of an automatic reactive compensating device, which comprises a controlled silicon element and a magnetic latching relay connected in parallel, as well as a signal input interface, a control circuit and a switch circuit connected in sequence, wherein the signal input interface receives a control signal and sends the control signal to the control circuit; the control circuit comprises a main control chip; the main control chip receives the control signal inputted from the signal input interface, is connected with the switch circuit through a drive chip, and sends a control command to the switch circuit; moreover, the controlled silicon element and the magnetic latching relay are controlled to be cut off or closed by the control circuit. For the combination switch, the cost is low, the quality is reliable and durable, and the service life is prolonged.
Description
Technical field
The utility model relates to a kind of combination switch, a kind of especially dynamic complex switch of auto-reactive compensation device of special use.
Background technology
In the prior art, be contained in the low-voltage reactive compensator capable and throw and to cut executive component and can briefly be divided into two kinds: there are pluses and minuses in actual applications separately in static compensation (A.C. contactor) and dynamic compensation (thyristor).
Static compensation adopts the fling-cut switch of A.C. contactor as shunt capacitor, and its shortcoming is: produce higher the shoving of multiple when dropping into capacitor, produce spark, scaling loss contact at the place, contact of contactor easily; When cutting off capacitor, cling contact easily, cause can not draw away, it is excessive unfavorable to capacitor itself to shove.Therefore, in use, every group capacitor installs the little reactor of series connection additional, shoves in order to inhibition.
Dynamic compensation is meant and adopts thyristor (controllable silicon) to work in the logical or disconnected two kinds of limiting conditions of complete shut-down of standard-sized sheet, in order to replace A.C. contactor, is called alternating-current switch.This SCR AC switch relies on intelligent automatic compensating controller to send signal, instructs it in the no-voltage input through triggering signal again, and zero current is withdrawn from.That its advantage is that zero passage is set out, moved is fast, limiting capacitance device inrush phenomenon significantly.Its shortcoming is, adopts the cost height of reverse-blocking tetrode thyristor circuit compensation, and the thyristor switch circuit has big pressure drop when operation, and operating electric energy loss and heating problem are very important.Cross high temperature and make controllable silicon damage the influence that is subject to temperature and radiation, parametric stability is relatively poor, and is responsive to the transition interference ratio, causes thyristor and building-out capacitor very easily to damage, and influences coming into operation of product.
The utility model content
For overcoming shortcoming of the prior art with not enough, the utility model provides a kind of combination switch of auto-reactive compensation device of special use on the basis of existing technology.This combination switch is worked thyristor and magnetic latching relay under certain sequential cooperates in order.
The purpose of this utility model is achieved by the following technical programs:
The dynamic complex switch, it is characterized in that: comprise the thyristor and the magnetic latching relay that are connected in parallel, also comprise the signal input interface that is linked in sequence, control circuit and switching circuit, described signal input interface receives control signal and is sent to control circuit, described control circuit comprises the master control chip, described master control chip receives the control signal by described signal input interface input, described master control chip links to each other with switching circuit through a chip for driving, send control command to switching circuit, described thyristor and magnetic latching relay are disconnected by described control circuit control or are closed.
Further, described control circuit comprises trigger control circuit, zero passage control circuit and photoelectric isolating circuit.
Further, comprise a switch block in the described switching circuit at least.
As preferably, the switch block in the described switching circuit is three, respectively three phase lines of corresponding three-phase circuit.
Further, be provided with thyristor gating circuit by the described thyristor.
The advantage of thyristor is a zero cross fired, and is little to the impulsive force of building-out capacitor, switching time T＜10ms, and action is fast, and power consumption was big when shortcoming was conducting.Power consumption was little when the advantage of magnetic latching relay was conducting, and shortcoming is to guarantee passing zero trigger.
Dynamic complex switch described in the utility model combines thyristor with magnetic latching relay, can guarantee the conducting and the cut-out of zero cross fired, impact to compensation condenser is little, and power consumption is little during conducting, save the radiator in the reactive power compensator and the cost of temp-controlling element and fan, reduced cost.
Description of drawings
Fig. 1 is the motherboard circuit figure of the utility model dynamic complex switch.
Fig. 2 is the control circuit figure of the utility model dynamic complex switch.
Embodiment
In order to understand the utility model more clearly, the utility model is described in detail below in conjunction with the drawings and specific embodiments.
See also Fig. 1 and Fig. 2, the circuit diagram of combination switch described in the utility model.A, B, C represent entering and exporting of electric network source mutually among the figure; CS60 is every phase thyristor module; Q1～Q6 represents the thyristor trigger control circuit of three-phase respectively; D1～D6 represents that for fear of by impacting and the interference of harmonic wave and the protective circuit that is provided with, the MOC3081 chip that U1～U6 adopts MOTOROLA company to produce is exported photoelectrical coupler as the zero passage bidirectional triode thyristor; this device is the encapsulation of dual-in-line six pin; as setting out thyristor, cheap, circuits for triggering are simple and reliable.R4～R19 then is used for the zero cross fired thyristor to be cut off and conducting.U7～U9 adopts 8023 chips, and expression magnetic latching relay control loop is used for control switch K1～K3.The master control chip adopts single-chip microcomputer STC12C5402, has that cost is low, reliability is high, strong anti-interference and electrically anti-.
The dynamic complex switch of automatic idle device described in the utility model can be divided into two types of three-phase compensation and single-phase compensation.Be characterized in: in reactive power compensator; do not need to put in addition electric device; this product is built-in with more perfect discharge setting; after cutting off the capacitor group, in 5 times in second, the voltage and the electric current that remain on the capacitor are reduced to zero-bit, to playing great protective effect the useful life of capacitor for voltage protection.Therefore in capacitance reactive compensation screen, box body device, do not need to install in addition release current indicator light or other pattern arresting elements, saved installation cost and workload.
The course of work of combination switch described in the utility model is as follows: when needs input compensation capacitor, automatic compensating controller sends a control signal, and the master control chip of notice combination switch makes its Closing Switch.The master control chip is after receiving this signal, make and trigger element conductive and trigger thyristor, in the conducting of alternating voltage zero-crossing place, get for after time-delay is less than 1 second the magnetic latching relay coil, often open the main contacts closure, compensation condenser is put into operation simultaneously, and after time-delay was less than 1 second, thyristor was by withdrawing from.In the most of the time of combination switch conducting, the magnetic latching relay main contacts drives the operation of capacitor normally, and thyristor only at combination switch conducting snap action once, then withdraw from after finishing, the time compole short, power consumption is very little, so do not need heat radiation, has prolonged the useful life of thyristor greatly.
When the auto-reactive compensation controller will be withdrawn from a certain circuit capacitor, send to combination switch and to withdraw from signal, the master control chip receives removes signal, promptly order the thyristor conducting, after being less than 1 second, time-delay makes the magnetic latching relay dead electricity, after magnetic latching relay main contacts and compensation condenser disconnected, compensation condenser also worked on by thyristor.After time-delay was less than 1 second, the master control chip was output as 0, and the optocoupler trigger ends, and thyristor will disconnect at current over-zero place and capacitor, and the compensation condenser no-flashy-flow is out of service.
When all capacitor has put into operation in the capacitance reactive compensation device, if have a power failure suddenly, the whole thyristors that are contained in the compensation arrangement also quit work, there is not this moment zero current to cut off, whole capacity current flows to the main noddle on contactor cut-off part, and moment produces high-temperature electric arc main noddle on contactor is burnt.For avoiding above-mentioned situation, combination switch described in the utility model also cooperates installing transient energy storage and delay cell, during sudden power, combination switch can utilize the transient energy storage power supply to keep short-term operation, cut off in order to contactor time-delay, significantly reduce arc current, prolong contactor useful life.
The utility model is not limited to above-mentioned execution mode, if various changes of the present utility model or distortion are not broken away from spirit and scope of the present utility model, if these changes and distortion belong within claim of the present utility model and the equivalent technologies scope, then the utility model also is intended to comprise these changes and distortion.
Claims (5)
1. dynamic complex switch, it is characterized in that: comprise the thyristor and the magnetic latching relay that are connected in parallel, also comprise the signal input interface that is linked in sequence, control circuit and switching circuit, described signal input interface receives control signal and is sent to control circuit, described control circuit comprises the master control chip, described master control chip receives the control signal by described signal input interface input, described master control chip links to each other with switching circuit through a chip for driving, send control command to switching circuit, described thyristor and magnetic latching relay are disconnected by described control circuit control or are closed.
2. dynamic complex switch according to claim 1 is characterized in that: described control circuit comprises trigger control circuit, zero passage control circuit and photoelectric isolating circuit.
3. dynamic complex switch according to claim 1 is characterized in that: comprise a switch block in the described switching circuit at least.
4. dynamic complex switch according to claim 1 is characterized in that: the switch block in the described switching circuit is three, respectively three phase lines of corresponding three-phase circuit.
5. dynamic complex switch according to claim 1 is characterized in that: described thyristor next door is provided with thyristor gating circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206525956U CN201898340U (en) | 2010-12-10 | 2010-12-10 | Dynamic combination switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206525956U CN201898340U (en) | 2010-12-10 | 2010-12-10 | Dynamic combination switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201898340U true CN201898340U (en) | 2011-07-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206525956U Expired - Fee Related CN201898340U (en) | 2010-12-10 | 2010-12-10 | Dynamic combination switch |
Country Status (1)
| Country | Link |
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| CN (1) | CN201898340U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103795076A (en) * | 2014-03-05 | 2014-05-14 | 贾继莹 | Three-phase load automatic balancer and phase changing device thereof |
| CN106208100A (en) * | 2016-08-15 | 2016-12-07 | 北海市深蓝科技发展有限责任公司 | A kind of mixed compensation intelligent power capacitor |
| CN110957739A (en) * | 2019-12-16 | 2020-04-03 | 深圳市华冠电气有限公司 | Combination switch and input method thereof |
| CN111796140A (en) * | 2020-06-30 | 2020-10-20 | 上海宏力达信息技术股份有限公司 | Detection circuit for simultaneously detecting zero crossing point and stopping power recovery |
-
2010
- 2010-12-10 CN CN2010206525956U patent/CN201898340U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103795076A (en) * | 2014-03-05 | 2014-05-14 | 贾继莹 | Three-phase load automatic balancer and phase changing device thereof |
| CN106208100A (en) * | 2016-08-15 | 2016-12-07 | 北海市深蓝科技发展有限责任公司 | A kind of mixed compensation intelligent power capacitor |
| CN110957739A (en) * | 2019-12-16 | 2020-04-03 | 深圳市华冠电气有限公司 | Combination switch and input method thereof |
| CN111796140A (en) * | 2020-06-30 | 2020-10-20 | 上海宏力达信息技术股份有限公司 | Detection circuit for simultaneously detecting zero crossing point and stopping power recovery |
| CN111796140B (en) * | 2020-06-30 | 2023-06-30 | 上海宏力达信息技术股份有限公司 | Detection circuit for simultaneously detecting zero crossing point and stopping and restoring electricity |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: JIANGMEN XINHUI XINBAOCHENG ELECTRIC TECHNOLOGY CO Free format text: FORMER OWNER: RONG NENG Effective date: 20130805 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 529100 JIANGMEN, GUANGDONG PROVINCE TO: 529199 JIANGMEN, GUANGDONG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130805 Address after: 529199, Xinhui District, Xinhui District, Guangdong, Jiangmen Province, three Hing Road, No. 1, 1 (office building) Patentee after: Jiangmen Xinhui Xinbaocheng Electric Technology Co., Ltd. Address before: 529100 East Industrial Zone, Xinhui District, Guangdong, Jiangmen Patentee before: Rong Neng |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110713 Termination date: 20141210 |
|
| EXPY | Termination of patent right or utility model |