CN107359694B - Backup contactor holding type self-adaptive anti-interference device and method thereof - Google Patents
Backup contactor holding type self-adaptive anti-interference device and method thereof Download PDFInfo
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- CN107359694B CN107359694B CN201710734076.0A CN201710734076A CN107359694B CN 107359694 B CN107359694 B CN 107359694B CN 201710734076 A CN201710734076 A CN 201710734076A CN 107359694 B CN107359694 B CN 107359694B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Relay Circuits (AREA)
- Stand-By Power Supply Arrangements (AREA)
Abstract
The utility model provides a reserve type contactor keeps type self-adaptation anti-interference electricity device, includes energy storage capacitor, magnetic reed change over switch, reserve direct current power module and controller, magnetic reed change over switch have with the main contact that the first end of contactor coil is connected, with the normally closed contact that the anodal of outside alternating current power is connected and with the normally open contact that the anodal of energy storage capacitor and reserve direct current power module are connected, the anodal and negative pole of energy storage capacitor respectively with the anodal and the negative pole of outside alternating current power are connected, the second end of contactor coil with the negative pole of outside alternating current power, the negative pole of energy storage capacitor and the negative pole of reserve direct current power module are connected, the controller with magnetic reed change over switch connects. The invention can adapt to the capacity of the contactor and truly realize the backup anti-interference electricity.
Description
Technical Field
The invention relates to the technical field of anti-interference electricity, in particular to a backup type contactor holding type self-adaptive anti-interference electricity device and a method thereof.
Background
The existing anti-interference electricity holding type device of the contactor has the following problems:
1. the traditional anti-interference device is installed in the drawer cabinet, and because the drawer panel is small, the human-computer interaction panel cannot be installed, so that the device is required to be installed inside the drawer completely, the drawer is required to be pulled out during operation, and on the aspect of electric power design, the power supply of the drawer is disconnected, so that the device cannot be operated. The traditional coping mode is to detach the anti-interference device for operation, so that the maintenance and operation workload is large, and the labor cost is greatly consumed. None of the patent (anti-glare device adaptive control system and control method thereof, CN 201310613038.1), the patent (an anti-glare module employing bypass mode and control method thereof, CN 201310591575.0), the patent (intelligent trip control system of anti-glare module and control method thereof, CN 201310610955.4) and the patent (an anti-glare contactor delay device, CN 201410220204.6) consider the problem.
2. The traditional anti-interference device cannot automatically adapt to the capacity of a contactor, and the wiring of the device is changed or the setting parameters are adjusted according to different capacities of different contactors, so that the debugging and maintenance are complicated, and the difficulty is high. The patent (anti-interference device self-adaptive control system and control method thereof, CN 201310613038.1) proposes to perform current adaptation by adopting a software calculation mode, but even if the contactor has the same specification, the holding current is different, so that the holding reliability is not high, and the application to practical products is difficult.
3. The traditional anti-interference device can not truly realize back-up anti-interference. The bypass circuit proposed in the patent (a bypass mode anti-interference module and a control method thereof, CN 201310591575.0) adopts a relay as a change-over switch, and since the minimum switching time of the relay is 7ms or more, the contactor can be maintained for voltage fluctuation, but the contactor is difficult to maintain for voltage dip L-type drop, especially a high-capacity contactor, so that the application of the contactor is limited and the contactor contacts have a shaking phenomenon in the switching process. The circuits proposed by the patent (intelligent tripping control system of anti-interference module and control method thereof, CN 201310610955.4) and the patent (adaptive control system of anti-interference device and control method thereof, CN 201310613038.1) are used for stringing the IGBTs into a contactor loop during normal operation, and once the device is in failure, the IGBTs cannot work, and at the moment, the contactors cannot normally operate, so that the circuit is not a truly bypass type, and the contactors are affected during the device failure.
Disclosure of Invention
In view of the above, the present invention provides a backup contactor-holding type adaptive anti-glare device and a method thereof.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides a reserve type contactor keeps type self-adaptation anti-interference electricity device, includes energy storage capacitor, magnetic reed change over switch, reserve direct current power module and controller, magnetic reed change over switch have with the main contact that the first end of contactor coil is connected, with the normally closed contact that the anodal of outside alternating current power is connected and with the normally open contact that the anodal of energy storage capacitor and reserve direct current power module are connected, the anodal and negative pole of energy storage capacitor respectively with the anodal and the negative pole of outside alternating current power are connected, the second end of contactor coil with the negative pole of outside alternating current power, the negative pole of energy storage capacitor and the negative pole of reserve direct current power module are connected, the controller with magnetic reed change over switch connects.
The scheme also comprises a dial switch for setting anti-interference electricity time, wherein the dial switch is connected with the controller and is provided with a two-position switch, and the time setting range is 0-9.9 seconds.
The magnetic reed switch adopts a high-pressure mercury magnetic reed switch.
The scheme also comprises a charging resistor, a charging diode and a discharging diode, wherein one end of the charging resistor is connected with the positive electrode of the charging diode, the other end of the charging resistor is connected with the positive electrode of an external alternating current power supply, the negative electrode of the charging diode is connected with the positive electrode of the energy storage capacitor, the positive electrode of the discharging diode is connected with the positive electrode of the energy storage capacitor, and the negative electrode of the discharging diode is connected with the normally open contact of the first magnetic spring change-over switch.
The scheme also comprises an anti-reverse diode and a free wheeling diode, wherein the positive electrode of the anti-reverse diode is connected with the positive electrode of the backup direct current power supply module, the negative electrode of the anti-reverse diode is connected with the normally open contact of the magnetic reed switch, the positive electrode of the free wheeling diode is connected with the second end of the contactor coil, and the negative electrode of the free wheeling diode is connected with the normally open contact of the first magnetic reed switch.
The scheme also relates to a backup type contactor holding type self-adaptive anti-interference electricity method, which comprises the following steps:
the method comprises the steps that a main contact of a magnetic spring change-over switch is connected with a first end of a contactor coil, a normally closed contact is connected with a positive electrode of an external alternating current power supply, a normally open contact is connected with a positive electrode of an energy storage capacitor and a positive electrode of a backup direct current power supply module, the positive electrode and a negative electrode of the energy storage capacitor are respectively connected with the positive electrode and the negative electrode of the external alternating current power supply, a second end of the contactor coil is connected with a negative electrode of the external alternating current power supply, a negative electrode of the energy storage capacitor and a negative electrode of the backup direct current power supply module, and a controller is connected with the magnetic spring change-over switch to enable the contactor coil to be powered by the external alternating current power supply;
the external alternating current power supply charges the energy storage capacitor in the power supply process;
after the controller receives the interference signal, anti-interference processing is carried out:
timing according to the preset anti-interference electricity time;
the controller is used for controlling the magnetic reed switch to enable the main contact of the magnetic reed switch to be switched from a normally closed contact to be attracted with a normally open contact, the energy storage capacitor is instantaneously discharged to the contactor coil, the attraction of the contactor contact is kept by direct current pulse, and after the discharge is finished, the backup direct current power supply module is used for providing a holding voltage for the contactor coil;
and if the external voltage is recovered within the anti-interference electricity time, the anti-interference electricity time is over or an anti-interference electricity exit command is received, the controller is used for controlling the magnetic reed switch, so that the main contacts of the magnetic reed switch are respectively switched from the normally open contacts to be attracted with the normally closed contacts, and the external alternating current power supply supplies power to the contactor coil.
The scheme also comprises the following steps:
the 8421 code of the dial switch is read through the controller and converted into time, the time is used as the preset anti-interference electricity time, the dial switch is provided with a two-bit switch, the dial switch is connected with the controller, the dial switch is provided with the two-bit switch, the time setting range of the dial switch is 0-9.9 seconds, and the dial switch is set to 00 to represent the anti-interference electricity exit instruction.
The magnetic reed switch adopts a high-pressure mercury magnetic reed switch.
The invention can adapt to the capacity of the contactor and truly realize the backup anti-interference electricity.
Drawings
The invention is described in detail below with reference to the attached drawings and detailed description:
FIG. 1 is a schematic diagram of the structure of the present invention;
fig. 2 is a schematic diagram of a dial switch according to the present invention.
Detailed Description
As shown in fig. 1 and 2, a backup type contactor holding type adaptive anti-interference device includes an energy storage capacitor C, a reed switch K1, a backup direct current power supply module DC and a controller W.
The positive electrode and the negative electrode of the energy storage capacitor C are connected with the positive electrode and the negative electrode of the external alternating current power supply AC, and then can be charged.
The magnetic reed switch K1 is provided with a main contact a connected with a first end of a contactor coil KM, a normally closed contact b connected with an anode of an external alternating current power supply AC and a normally open contact C connected with an anode of an energy storage capacitor C and an anode of a backup direct current power supply module DC, a second end of the contactor coil KM is connected with a cathode of the external alternating current power supply AC, a cathode of the energy storage capacitor C and a cathode of the backup direct current power supply module DC, and the controller W is connected with the magnetic reed switch K1.
Specifically, the invention further provides a charging resistor R, a charging diode D1 and a discharging diode D2, wherein one end of the charging resistor R is connected with the positive electrode of the charging diode D1, the other end of the charging resistor R is used for being connected with the positive electrode of an external alternating current power supply AC, the negative electrode of the charging diode D1 is connected with the positive electrode of an energy storage capacitor C, the positive electrode of the discharging diode D2 is connected with the positive electrode of the energy storage capacitor C, and the negative electrode of the discharging diode D2 is connected with a normally open contact C of the magnetic reed switch K1.
When the energy storage capacitor C is charged, the energy storage capacitor C is connected with the positive electrode of the external alternating current power supply AC through the charging diode D1 and the charging resistor R to carry out current limiting and protection, and when the energy storage capacitor C is discharged, a rapid discharging path is provided by the discharging diode D2.
Specifically, the invention also provides a reverse-preventing diode D3 and a freewheeling diode D4, wherein the positive electrode of the reverse-preventing diode D3 is connected with the positive electrode of the backup direct current power supply module DC, the negative electrode of the reverse-preventing diode D3 is connected with the normally open contact c of the magnetic reed switch K1 to prevent reverse charging, the positive electrode of the freewheeling diode D4 is connected with the second end of the contactor coil KM, and the negative electrode of the freewheeling diode D4 is connected with the normally open contact c of the magnetic reed switch K1 to play a freewheeling role so as to limit the counter-electromotive force voltage of the coil and protect the circuit.
The invention adopts the magnetic reed change-over switch, has long service life and is not easy to damage.
Preferably, the magnetic reed switch K1 adopts a high-pressure mercury magnetic reed switch, the action speed is high, the operation time range is 100 mu s to 300 mu s, the switching withstand voltage is up to kilovolts, the mercury contact has the switching capacity of a large circuit, and the mercury contact is not easy to burn and adhere like a common relay, so that the long service life of the switch contact is ensured.
In order to set the anti-interference time, the invention also provides a dial switch K2, wherein the dial switch K2 is connected with the controller W, the dial switch K2 is provided with a two-bit switch, the first-bit dial switch represents seconds, the second-bit dial switch represents 0.1 seconds, and the time setting range is 0-9.9 seconds. If the two-bit dial switch is set to 00, the anti-interference function is withdrawn.
The invention adopts the dial switch, can debug under the condition of no electricity, realizes the electroless debugging without considering the installation position, greatly reduces the debugging difficulty, the debugging time and the debugging cost, and is particularly suitable for drawer cabinets.
When the magnetic reed switch K1 is used, the main contact a of the magnetic reed switch K1 is connected with the first end of the contactor coil KM, the normally closed contact b is connected with the positive electrode of the external alternating current power supply AC, the normally open contact C is connected with the positive electrode of the energy storage capacitor C and the positive electrode of the backup direct current power supply module DC, the positive electrode and the negative electrode of the energy storage capacitor C are respectively connected with the positive electrode and the negative electrode of the external alternating current power supply AC, the second end of the contactor coil KM is connected with the negative electrode of the external alternating current power supply AC, the negative electrode of the energy storage capacitor C and the negative electrode of the backup direct current power supply module DC, and the controller W is connected with the magnetic reed switch K1, so that the contactor coil KM is powered by the external alternating current power supply AC.
During the power supply, an external alternating current power source AC charges the energy storage capacitor C.
After the controller W receives the electric interference signal, anti-electric interference processing is performed:
1. and (5) timing according to the preset anti-interference electricity time.
2. The controller W controls the magnetic reed switch K1 to enable the main contact a of the magnetic reed switch K1 to be switched from the normally closed contact b to be attracted with the normally open contact c, and the backup direct current power supply module DC supplies power to the contactor coil KM:
at this time, the energy of the energy storage capacitor C is instantaneously released to the contactor coil KM, the contact of the contactor is kept to be attracted by powerful direct current pulse, and after the electric energy is released, the backup direct current power supply module DC naturally provides the holding voltage for the contactor coil.
It should be noted that, the normally closed contact b of the magnetic reed switch K1 is initially attracted to the main contact a, after the power is supplied from the external AC power supply AC, the normally closed contact b is still attracted to the main contact a under the control of the controller W, when the controller W receives the shaking signal, the controller W controls the main contact a to be attracted to the normally open contact c, if the device of the present invention has internal failure or damage, the magnetic reed switch K1 cannot be supplied with power, because b is the normally closed contact, c is the normally open contact, at this time, the main contact a will be switched from the normally open contact c to the normally closed contact b without the control of the controller W, so the contactor can be automatically switched to the external AC power supply AC to supply in a hardware manner.
3. When the external voltage is recovered within the anti-interference time, the anti-interference time is over (whether the external voltage is recovered or not) or an anti-interference exit command is received, the controller W controls the magnetic reed switch K1, so that the main contact a of the magnetic reed switch K1 is switched from the normally open contact c to be attracted with the normally closed contact b, and the external alternating current power supply AC supplies power to the contactor coil KM.
According to the invention, 8421 codes of the dial switch K2 are read through the controller W, converted into time, the time is used as preset anti-interference electricity time, the dial switch K2 is provided with a two-bit switch, the time setting range is 0-9.9 seconds, and the dial switch K2 is connected with the controller W.
The dial switch K2 set to 00 represents an anti-glare exit instruction.
When the anti-interference device is used, the contactor coil KM is in a standby state from an external alternating current power supply AC in normal time, the device switches the contactor coil KM to a backup direct current power supply module DC in anti-interference time, and when the external voltage is recovered from the anti-interference time or the anti-interference time, the device switches the contactor coil KM to the external alternating current power supply AC. The electric interference of the common factory is in a few seconds and rarely occurs, and the device of the invention only works in a short time, so the service life is greatly prolonged. In addition, if the internal fault is damaged, the contactor is automatically switched to the external alternating current power supply AC to supply power in a hardware mode, and the anti-interference function is automatically withdrawn in the hardware mode. Therefore, the normal operation of the contactor is not affected by the device faults, and a backup type in a physical sense is realized.
The invention adapts to the capacity of the contactor, and aims at contactors with different capacities, parameters are not required to be set or wiring is not required to be changed, so that the selection is simplified, spare part stock is reduced, time and difficulty of installation and debugging are reduced, and product maintenance workload is reduced.
However, it will be appreciated by persons skilled in the art that the above embodiments are provided for illustration of the invention and not for limitation thereof, and that changes and modifications to the above described embodiments are intended to fall within the scope of the appended claims as long as they fall within the true spirit of the invention.
Claims (8)
1. The utility model provides a reserve type contactor keeps type self-adaptation anti-interference electricity device which characterized in that, includes energy storage capacitor, magnetic reed change over switch, reserve direct current power module and controller, magnetic reed change over switch has the main contact of being connected with the first end of contactor coil, with the normal close contact of external alternating current power supply's anodal connection and with the normally open contact of the anodal and reserve direct current power module's of energy storage capacitor anodal, the anodal and the negative pole of energy storage capacitor are connected with external alternating current power supply's anodal and negative pole respectively, the second end of contactor coil with external alternating current power supply's negative pole, the negative pole of energy storage capacitor and reserve direct current power module's negative pole are connected, the controller with magnetic reed change over switch connects.
2. The back-up contactor-holding adaptive anti-glare device of claim 1, further comprising a dial switch for setting an anti-glare time, wherein the dial switch is connected to the controller and has a two-position switch with a time setting in a range of 0-9.9 seconds.
3. The back-up contactor-holding adaptive anti-glare device of claim 1 or 2, wherein the reed switch is a high pressure mercury reed switch.
4. The self-adaptive anti-interference device for a backup contactor according to claim 3, further comprising a charging resistor, a charging diode and a discharging diode, wherein one end of the charging resistor is connected with the positive electrode of the charging diode, the other end of the charging resistor is connected with the positive electrode of the external alternating current power supply, the negative electrode of the charging diode is connected with the positive electrode of the energy storage capacitor, the positive electrode of the discharging diode is connected with the positive electrode of the energy storage capacitor, and the negative electrode of the discharging diode is connected with the normally open contact of the magnetic reed switch.
5. The back-up contactor hold-up adaptive anti-glare device of claim 4 further comprising an anti-reverse diode and a freewheeling diode, wherein the positive electrode of the anti-reverse diode is connected to the positive electrode of the back-up dc power module, the negative electrode is connected to the normally open contact of the reed switch, the positive electrode of the freewheeling diode is connected to the second end of the contactor coil, and the negative electrode is connected to the normally open contact of the reed switch.
6. A backup contactor-holding type adaptive anti-glare method, comprising:
the method comprises the steps that a main contact of a magnetic spring change-over switch is connected with a first end of a contactor coil, a normally closed contact is connected with a positive electrode of an external alternating current power supply, a normally open contact is connected with a positive electrode of an energy storage capacitor and a positive electrode of a backup direct current power supply module, the positive electrode and a negative electrode of the energy storage capacitor are respectively connected with the positive electrode and the negative electrode of the external alternating current power supply, a second end of the contactor coil is connected with a negative electrode of the external alternating current power supply, a negative electrode of the energy storage capacitor and a negative electrode of the backup direct current power supply module, and a controller is connected with the magnetic spring change-over switch to enable the contactor coil to be powered by the external alternating current power supply;
the external alternating current power supply charges the energy storage capacitor in the power supply process;
after the controller receives the interference signal, anti-interference processing is carried out:
timing according to the preset anti-interference electricity time;
the controller is used for controlling the magnetic reed switch to enable the main contact of the magnetic reed switch to be switched from a normally closed contact to be attracted with a normally open contact, the energy storage capacitor is instantaneously discharged to the contactor coil, the attraction of the contactor contact is kept by direct current pulse, and after the discharge is finished, the backup direct current power supply module is used for providing a holding voltage for the contactor coil;
and if the external voltage is recovered within the anti-interference electricity time, the anti-interference electricity time is over or an anti-interference electricity exit command is received, the controller is used for controlling the magnetic reed switch, so that the main contacts of the magnetic reed switch are respectively switched from the normally open contacts to be attracted with the normally closed contacts, and the external alternating current power supply supplies power to the contactor coil.
7. The back-up contactor-holding adaptive anti-glare method of claim 6, further comprising:
the 8421 code of the dial switch is read through the controller and converted into time, the time is used as the preset anti-interference electricity time, the dial switch is provided with a two-bit switch, the dial switch is connected with the controller, the dial switch is provided with the two-bit switch, the time setting range of the dial switch is 0-9.9 seconds, and the dial switch is set to 00 to represent the anti-interference electricity exit instruction.
8. The method for self-adaptive anti-glare of a backup contactor according to claim 6 or 7, wherein said reed switch is a high pressure mercury reed switch.
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| CN201710734076.0A CN107359694B (en) | 2017-08-24 | 2017-08-24 | Backup contactor holding type self-adaptive anti-interference device and method thereof |
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| CN201710734076.0A CN107359694B (en) | 2017-08-24 | 2017-08-24 | Backup contactor holding type self-adaptive anti-interference device and method thereof |
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| CN107359694B true CN107359694B (en) | 2023-05-16 |
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| CN107947334A (en) * | 2017-11-21 | 2018-04-20 | 广州圣力电源实业有限公司 | A kind of two-supply circuit system |
| CN110336356B (en) * | 2019-07-12 | 2021-03-16 | 山东大骋医疗科技有限公司 | Intelligent charging system and method for new energy medical equipment |
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| CN2733573Y (en) * | 2004-06-15 | 2005-10-12 | 梁武兴 | Anti-flashover AC contactor |
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| CN107359694A (en) | 2017-11-17 |
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