CN202957664U - Automatic reclosing device for residual current breaker - Google Patents

Automatic reclosing device for residual current breaker Download PDF

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Publication number
CN202957664U
CN202957664U CN2012206393439U CN201220639343U CN202957664U CN 202957664 U CN202957664 U CN 202957664U CN 2012206393439 U CN2012206393439 U CN 2012206393439U CN 201220639343 U CN201220639343 U CN 201220639343U CN 202957664 U CN202957664 U CN 202957664U
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CN
China
Prior art keywords
circuit
residual current
output
voltage
reset
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Expired - Lifetime
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CN2012206393439U
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Chinese (zh)
Inventor
管瑞良
孙伟锋
徐伟
孙义成
包伟乾
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Changshu Switchgear Manufacturing Co Ltd
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Changshu Switchgear Manufacturing Co Ltd
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Priority to CN2012206393439U priority Critical patent/CN202957664U/en
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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
    • 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
    • Y04S20/242—Home appliances

Abstract

The utility model discloses an automatic reclosing device for a residual current breaker and belongs to the field of low-voltage appliances. The device comprises a central processor circuit, an indicating circuit, a control output circuit, a communication circuit, a locking resetting circuit, a residual current alarming circuit, a voltage sampling circuit and a power supply circuit, wherein output ends of the locking resetting circuit, the residual current alarming circuit, the voltage sampling circuit and the power supply circuit are connected to the input end of the central processor circuit, the output end of the central processor circuit is connected to the indicating circuit, the control output circuit and the communication circuit, and the output end of the control output circuit is connected to an electric operation mechanism. The power interruption caused by faults such as transient grid over-voltage and transient lightning strike short circuit can be avoided, the information such as residual current faults, the breaker dividing state and the line voltage fault state in the line can be uploaded in real time, the remote signaling function can be achieved, the multi-channel state indication is achieved, a user is prompted to process problems timely and the automatic reclosing function can be achieved without breaker changing.

Description

A kind of residual current circuit breaker auto recloser
Technical field
The utility model belongs to the low voltage electrical apparatus technology field, is specifically related to a kind of residual current circuit breaker auto recloser
Background technology
Along with developing rapidly of China's industrial and agricultural production, the improving constantly of living standards of urban and rural residents level, people are more and more stronger for the dependence of electricity, and are also more and more higher for the requirement of power supply reliability and the quality of power supply.In the electric power networks, because the power failure that the temporary fault of a variety of causes causes usually can be brought a lot of losses and inconvenience to industrial and agricultural production and people's lives.In the electric power system of reality, normally used circuit breaker all adopts trip switch No. one time, in case can not automatically again close a floodgate after the tripping operation, needs manually to close a floodgate one by one.The circuit breaker that particularly has places the airtight or people such as basement, electric pole to be difficult for the place of touching, and very inconvenience and have a lot of extra work amounts restores electricity; Night even the operation of feeling about in the dark, the operation of feeling about in the dark causes security incident easily, makes troubles to safe power supply.In addition, in Industry Control, the startup of high power motor, the situations such as work of electric welding machine all can cause the fluctuation of line voltage; produced the low pressure phenomenon; and breaker of plastic casing in the market, major part does not all have the function of overvoltage protection, can not provide protection when line voltage is unusual.
In view of above-mentioned prior art, be necessary to be improved, for this reason, the applicant has done useful design, and technical scheme described below produces under this background
Summary of the invention
The purpose of this utility model is to provide a kind of residual current circuit breaker auto recloser; can automatic reclosing after the tripping operation and be with low-voltage variation; the greatly perfect defencive function of circuit breaker; all can cooperate with the residual current circuit breaker of any type; be installed in by the residual current circuit breaker with guide rail mode, install simple, flexible.
The purpose of this utility model reaches like this, a kind of residual current circuit breaker auto recloser, it is characterized in that: comprise the central processing unit circuit, the indicating circuit of indicating operating status, at least by the control output circuit of the output contacts of two groups of independent controls, the telecommunication circuit that is connected with external communication network, the locking reset circuit of external reset signal is provided, the residual current alarm circuit that the residual current fault-signal is provided to provide with residual current circuit breaker, at least with any two-phase or the voltage sampling circuit that all is connected of three-phase major loop with the power circuit of operating voltage is provided for foregoing circuit, the locking reset circuit, the residual current alarm circuit, the output of voltage sampling circuit and power circuit is connected with the input of central processing unit circuit, the output of central processing unit circuit and indicating circuit, control output circuit and telecommunication circuit connect, and the output of control output circuit is connected with motor-operating mechanism.
In a specific embodiment of the present utility model, described indicating circuit is made of one or both of LED light, LCDs.
In another specific embodiment of the present utility model, the reset mode of described locking reset circuit is local reset or remote reset.
In another specific embodiment of the present utility model, the input of described voltage sampling circuit is taken from inlet wire side or the outgoing line side of circuit breaker.
In another specific embodiment of the present utility model, described voltage sampling circuit is made of one road differential amplifier circuit at least, and the output of each road differential amplifier circuit is connected to the central processing unit circuit individually.
The utility model is owing to adopted above-mentioned design, voltage sampling circuit utilizes differential amplifier circuit to gather simultaneously three-phase voltage, can detect overvoltage or the low voltage failure of any two-phase, realize overvoltage, the low-voltage variation function, the residual current alarm circuit connects residual current circuit breaker, detect the residual current alarm signal, the central processing unit circuit is respectively from the locking reset circuit, the residual current alarm circuit, voltage sampling circuit receives external reset signal, the residual current fault-signal, line voltage signal is processed and is carried out real-time judge, make route protection more accurate, and be connected to motor-operating mechanism by the control output circuit and carry out on/off switch control, by reclosing is set certain delay time, can effectively avoid owing to the moment power network overvoltage, the transient fault such as moment thunderbolt short circuit and the generation of the situation that the electrical network that causes interrupts greatly reduces electricity consumption user's loss; The utility model also has communication function, can upload in real time the information such as residual current fault message in the circuit, circuit breaker deciliter state, line voltage distribution malfunction, realize remote signaling function, host computer can install long-range read status information by this, and remote control electric operating mechanism, realization realizes distant control function to the on/off switch control of residual current circuit breaker; The utility model can also be realized the indication of multichannel state, and reminding user is in time processed problem, plays the safeguard protection effect; The utility model is guide tracked installation, and is simple and convenient, is applicable to multiple residual current circuit breaker, need not change the breaker body structure and just can realize automatic reclosing function.
Description of drawings
Fig. 1 is theory diagram of the present utility model.
Fig. 2 is the circuit diagram of central processing unit circuit of the present utility model.
Fig. 3 is the circuit diagram of indicating circuit of the present utility model.
Fig. 4 is the circuit diagram of control output circuit of the present utility model.
Fig. 5 is the circuit diagram of telecommunication circuit of the present utility model.
Fig. 6 is the circuit diagram of locking reset circuit of the present utility model.
Fig. 7 is the circuit diagram of residual current alarm circuit of the present utility model.
Fig. 8 is the circuit diagram of voltage sampling circuit of the present utility model.
Fig. 9 is the circuit diagram of power circuit of the present utility model
Embodiment
In order to make the public can fully understand technical spirit of the present utility model and beneficial effect; the applicant will describe in detail embodiment of the present utility model below by reference to the accompanying drawings; but the applicant is not restriction to technical scheme to the description of embodiment, anyly makes form and immaterial variation all should be considered as protection range of the present utility model according to the utility model design.
See also Fig. 1, a kind of residual current circuit breaker comprises the central processing unit circuit with auto recloser, the indicating circuit of indicating operating status, at least by the control output circuit of the output contacts of two groups of independent controls, the telecommunication circuit that is connected with external communication network, the locking reset circuit of external reset signal is provided, the residual current alarm circuit that the residual current fault-signal is provided to provide with residual current circuit breaker, at least with any two-phase or the voltage sampling circuit that all is connected of three-phase major loop with the power circuit of operating voltage is provided for foregoing circuit, the locking reset circuit, the residual current alarm circuit, the output of voltage sampling circuit and power circuit is connected with the input of central processing unit circuit, the output of central processing unit circuit and indicating circuit, control output circuit and telecommunication circuit connect, and the output of control output circuit is connected with motor-operating mechanism.The central processing unit circuit is respectively by the locking reset circuit, the residual current alarm circuit, voltage sampling circuit receives external reset signal, the residual current fault-signal, line voltage signal is processed and is carried out real-time judge, indicate respectively power work by indicating circuit, residual current alarm, overvoltage, low pressure, locking, communication is totally six kinds of operating states, and be connected to motor-operating mechanism by the control output circuit and carry out on/off switch control, also can upload in real time residual current fault message in the circuit by telecommunication circuit, circuit breaker deciliter state, the information such as line voltage distribution malfunction realize remote signaling function.Host computer can install long-range read status information by this, and the remote control electric operating mechanism, realizes the control of residual current circuit breaker on/off switch is realized distant control function.
See also Fig. 2, described central processing unit circuit comprises single-chip microcomputer N1, crystal oscillator CR1, capacitor C 31 and resistance R 1, R2, in the present embodiment, described single-chip microcomputer N1 preferentially adopts R8C/13, crystal oscillator CR1 adopts SMD ceramic crystal oscillator, built-in two 22pF electric capacity form the shunt-resonant circuit, and frequency of oscillation is played the fine setting effect.Single-chip microcomputer N1 is the core of this device, its 1 pin with are connected pin and connect the locking reset circuit and receive external reset signal; 27 pin connect the residual current alarm circuit and receive the residual current fault-signal; 28～30 pin connect voltage sampling circuit receiving lines voltage signal, on the other hand, 10 of single-chip microcomputer N1,13,14,22～24 pin connect indicating circuit and are used for control indicating circuit indication power work, residual current alarm, overvoltage, low pressure, locking, communication totally six kinds of operating states; The connection of 19～21 pin is controlled output circuit and is connected to motor-operating mechanism by the control output circuit and carries out on/off switch control; 2～4 pin connect telecommunication circuit and upload in real time the information such as residual current fault message in the circuit, circuit breaker deciliter state, line voltage distribution malfunction by telecommunication circuit, realize remote signaling function, utilize in addition telecommunication circuit also can realize information interaction with host computer.
See also Fig. 3, be the circuit diagram of indicating circuit of the present utility model, described indicating circuit can be made of one or both of LED light, LCDs, can realize at least the indication of three kinds of operating states.In the present embodiment, describe as an example of LED light example.Described indicating circuit comprises resistance R 9～R14, Light-Emitting Diode H1～H6, the end of resistance R 9～R14 connects respectively 10,13,14,24,23,22 pin of the single-chip microcomputer N1 in the central processing unit circuit, the other end of resistance R 9～R14 connects respectively the positive pole of Light-Emitting Diode H1～H6, the negative pole common ground of Light-Emitting Diode H1～H6.Light-Emitting Diode H1～H6 is respectively applied to indicate power work, residual current alarm, overvoltage, low pressure, locking, communication totally six kinds of operating states.
See also Fig. 4, described control output circuit comprises relay K 1～K3, triode V1～V3, diode D3～D5, capacitor C 3～C5 and resistance R 15～R20.The end of resistance R 15, R17, R19 connects respectively 21,20,19 pin of the single-chip microcomputer N1 in the central processing unit circuit, the other end of resistance R 15, R17, R19 is the base stage of connecting triode V1～V3 respectively, and the signal of single-chip microcomputer N1 output comes the break-make of control relay K1～K3 by triode V1～V3.Wherein, diode D3～D5 plays the afterflow effect, and capacitor C 3～C5 plays filtering interference signals, and resistance R 15, R17, R19 are current-limiting resistance, and resistance R 16, R18, R20 are pull down resistor.Output control circuit described in the utility model is divided into two-way output, the control end that one tunnel output contact COM, ON1, OFF1 are connected to motor-operating mechanism, output contact BJ1, the BJ2 on another road can be connected to the various faults state indicating devices such as buzzer, indicator light.
See also Fig. 5, described telecommunication circuit comprises level transferring chip N3, resistance R 40～R46, TVS pipe FV1, FV2 and anti-thunder tube FV3.In the present embodiment, level transferring chip N3 is preferably ADM2483, mainly realizes the conversion of communication level, converts Transistor-Transistor Logic level to the RS485 bus level.Wherein, TVS pipe FV1, FV2 are used for overvoltage protection and the electrostatic defending of communication line; anti-thunder tube FV3 is used for the thunderbolt overvoltage protection of communication line; resistance R 40, R41, R42, R45, R46 are current-limiting resistance; the end of resistance R 40, R41, R42 is connected to respectively 3,4,2 pin of the single-chip microcomputer N1 in the central processing unit circuit; resistance R 43 is pull-up resistor, and resistance R 44 is pull down resistor.Described telecommunication circuit is to connect between central processing unit circuit and external communication network are such as fieldbus by level transferring chip N3, and TTL signal level and fieldbus signal level are changed mutually, thereby realizes data transfer.Telecommunication circuit of the present utility model can also adopt the communications such as GSM, GPRS to be connected with external communication network, and external communication network also can be other communication networks such as Ethernet certainly.
See also Fig. 6, described locking reset circuit comprises optocoupler IC2, resistance R 6～R8, diode D2, capacitor C 2 and key switch SW1.Optocoupler IC2 plays the transfer function of signal, and its output connects 25 pin of the single-chip microcomputer N1 in the central processing unit circuit.Resistance R 6 is current-limiting resistance, and resistance R 7, R8 are pull-up resistor, and diode D2 plays the afterflow effect, and capacitor C 2 is filter capacitor.Key switch SW1 plays the internal reset effect, and the one end connects 1 pin of the single-chip microcomputer N1 in the central processing unit circuit, other end ground connection.The reset mode of described locking reset circuit can be that local reset also can be remote reset.
See also Fig. 7, described residual current alarm circuit comprises optocoupler IC1, resistance R 3～R5, diode D1 and capacitor C 1.The input termination residual current circuit breaker of circuit, input signal are level or the contact signal of residual current acting, can be provided by any specification, any type residual current circuit breaker or device; The output of circuit, namely the output of optocoupler IC1 connects 27 pin of the single-chip microcomputer N1 in the central processing unit circuit.After occurring the residual current fault on the residual current circuit breaker, fault-signal is delivered to the central processing unit circuit through optocoupler IC1 and carries out the signal processing.Wherein optocoupler IC1 plays the transfer function of signal, and resistance R 3 is current-limiting resistance, and resistance R 4 is pull down resistor, and resistance R 5 is pull-up resistor, and diode D1 plays anti-reverse effect, and capacitor C 1 is filter capacitor.
See also Fig. 8, described voltage sampling circuit gathers line voltage signal with differential mode, and its input signal is desirable from circuit breaker inlet wire side or outgoing line side.Voltage sampling circuit is made of one road differential amplifier circuit at least, and the output on each road is connected to the central processing unit circuit individually.The utility model adopts differential amplifier circuit to gather simultaneously three-phase voltage with the example that is sampled as of three-phase voltage, can detect overvoltage or the low pressure of any two-phase, realizes overvoltage, low-voltage variation function.Described voltage sampling circuit is comprised of operational amplifier N2A, N2B, N2C, diode D10～D12, resistance R 29～R39, capacitor C 10～C12, three outputs of circuit connect respectively 30,29,28 pin of the single-chip microcomputer N1 in the central processing unit circuit, can gather simultaneously A-N, B-N, the C-N voltage signal send single-chip microcomputer N1 to process.Wherein, resistance R 29, R32, R35, R38 are input resistance, resistance R 30, R33, R36 are feedback resistance, resistance R 31, R34, R37, R39 are current-limiting resistance, diode D10～D12 each by two diodes consist of and two diodes between be reverse setting, play the pressure limiting effect, capacitor C 10～C12 is filter capacitor.
See also Fig. 9, described power circuit comprises power transformer T1, optocoupler IC3, power supply chip N4, rectifier bridge VB1, three-terminal voltage-stabilizing chip N5, N6, piezo-resistance RV1, voltage-stabiliser tube D13, D17, diode D14～D16, inductance L 1～L3, resistance R 49, R50, capacitor C 14～C30, C32 and transformer L4, in the present embodiment, described power transformer T1 adopts KB-13 ,Power supply chip N4 preferentially adopts NCP1014.The L end that the input of circuit gets access to grid, N end, external AC 230V power supply is converted to VDD and VEE1 two-way direct voltage by power transformer T1 after rectifier bridge VB1 rectification.Direct voltage VDD is converted to direct voltage VCC through three-terminal voltage-stabilizing chip N5, and direct voltage VEE1 is converted to direct voltage VEE through three-terminal voltage-stabilizing chip N6, with this as the communication isolating power supply.Wherein voltage stabilizing chip N5, N6 preferentially adopt MCP1703; piezo-resistance RV1 is used for absorbing the surge voltage of power end; the protection late-class circuit; capacitor C 15, C16 and inductance L 1 form Π type filter circuit; optocoupler IC3 and power supply chip N4 form power feedback, and diode D14 plays a part anti-reverse, and voltage-stabiliser tube D17 is rear class output voltage stabilizing; capacitor C 14, C15, C16, C17, C19, C20 are filter capacitor, and capacitor C 18, C21, C22 are decoupling capacitor.
Described residual current circuit breaker can be stand alone type with auto recloser, also can carry out assembly unit with circuit breaker.This device and residual current circuit breaker and motor-operating mechanism combination receive the residual current protection action signal that residual current circuit breaker is inputted, and output control signals to motor-operating mechanism, and the control motor-operating mechanism is realized automatic reclosing to residual current circuit breaker

Claims (5)

1. A kind of residual current circuit breaker auto recloser, it is characterized in that comprising the central processing unit circuit, the indicating circuit of indicating operating status, at least by the control output circuit of the output contacts of two groups of independent controls, the telecommunication circuit that is connected with external communication network, the locking reset circuit of external reset signal is provided, the residual current alarm circuit that the residual current fault-signal is provided to provide with residual current circuit breaker, at least with any two-phase or the voltage sampling circuit that all is connected of three-phase major loop with the power circuit of operating voltage is provided for foregoing circuit, the locking reset circuit, the residual current alarm circuit, the output of voltage sampling circuit and power circuit is connected with the input of central processing unit circuit, the output of central processing unit circuit and indicating circuit, control output circuit and telecommunication circuit connect, and the output of control output circuit is connected with motor-operating mechanism.
2. A kind of residual current circuit breaker auto recloser according to claim 1 is characterized in that described indicating circuit is made of one or both of LED light, LCDs.
3. A kind of residual current circuit breaker auto recloser according to claim 1, the reset mode that it is characterized in that described locking reset circuit is local reset or remote reset.
4. A kind of residual current circuit breaker auto recloser according to claim 1 is characterized in that the input of described voltage sampling circuit takes from inlet wire side or the outgoing line side of circuit breaker.
5. According to claim 1 or 4 described a kind of residual current circuit breaker auto reclosers, it is characterized in that described voltage sampling circuit is made of one road differential amplifier circuit at least, the output of each road differential amplifier circuit is connected to the central processing unit circuit individually
CN2012206393439U 2012-11-28 2012-11-28 Automatic reclosing device for residual current breaker Expired - Lifetime CN202957664U (en)

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CN2012206393439U CN202957664U (en) 2012-11-28 2012-11-28 Automatic reclosing device for residual current breaker

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104377816A (en) * 2014-11-07 2015-02-25 浙江正泰电器股份有限公司 Intelligent reclosure breaker and automatic reclosure control method thereof
CN105680428A (en) * 2016-03-21 2016-06-15 吉林大学 Voltage-type secondary reclosing microcomputer device and control method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104377816A (en) * 2014-11-07 2015-02-25 浙江正泰电器股份有限公司 Intelligent reclosure breaker and automatic reclosure control method thereof
CN105680428A (en) * 2016-03-21 2016-06-15 吉林大学 Voltage-type secondary reclosing microcomputer device and control method thereof

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Granted publication date: 20130529