CN104836189B - It is a kind of can Self-resetting and remote reset electric protective device and its method - Google Patents
It is a kind of can Self-resetting and remote reset electric protective device and its method Download PDFInfo
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Abstract
The invention discloses it is a kind of can Self-resetting and remote reset electric protective device; including preposition protection module, power transfer module, CPU processing modules, relay protection module, data memory module and communication interface modules; described preposition protection module is simultaneously connected in 220V electric lines, makes described electric protective device and electrical equipment into parallel relationship；Preposition protection module is followed by power transfer module, and CPU processing modules, data memory module and communication interface modules are connected respectively behind power transfer module；CPU processing modules directly control relay protection module, and relay protection module in 220V electric lines, makes relay protection module and electrical equipment into series relationship by relay series connection.The electric protective device and its method of the present invention, greatly improves the reliability, restorability, service life of equipment, and greatly shorten the recovery time after electric fault.
Description
Technical field
The present invention relates to low-voltage electrical apparatus manufacturing field, more particularly to it is a kind of can Self-resetting and remote reset electic protection dress
Put and its method.
Background technology
Conventional electrical protection device is generally air switch and fuse, can in a power distribution system connect, is segmented and hold
Rated current is carried, and reliably protecting can be carried out to circuit and electrical equipment in the case where overload, short circuit occur for electrical equipment.
But there is following defect in air switch and fuse：First, detection time is grown, action delay length, it is impossible in time, have
Effect protection electrical equipment and circuit；2nd, hard contact is typically used, controls the opening and closing of contact to realize to electricity by mechanical action
The break-make control on road, in the case of high current or frequent break-make, easily there is spark in contact, there is the danger for causing fire, and
The hard contact life-span is not grown；3rd, occur after electic protection acts on, it is necessary to which on-site manual resets combined floodgate or replacing fuse (is protected
Dangerous silk), maintenance time length, while increase the cost of personnel's maintenance；4th, the information such as equipment fault and action does not have record, unfavorable
In accident investigation.
Therefore, it is necessary to a kind of new electric protective device is designed to meet the needs of people.
The content of the invention
The shortcomings that it is an object of the invention to overcome prior art and deficiency, there is provided it is a kind of can Self-resetting and remote reset
Electric protective device.
Another object of the present invention is to provide it is a kind of can Self-resetting and remote reset electrical protection method.
The purpose of the present invention is realized by following technical scheme：
It is a kind of can Self-resetting and remote reset electric protective device, including preposition protection module, power transfer module,
CPU processing modules, relay protection module, data memory module and communication interface modules, described preposition protection module simultaneously couple
In 220V electric lines, make described electric protective device and electrical equipment into parallel relationship；Preposition protection module is followed by electricity
Source modular converter, CPU processing modules, data memory module and communication interface modules are connected respectively behind power transfer module；CPU
Processing module directly controls relay protection module, and relay protection module in 220V electric lines, is made by relay series connection
Relay protection module and electrical equipment are into series relationship.
Described preposition protection module, it is electrical equipment both ends capacitor in parallel, or is connected for electrical equipment both ends
Inductor, or for electric capacity, inductor form compound filter circuit.
Described power transfer module, mains electricity is converted to stable 3.6V direct currents, filled as electic protection
The power supply put, or mains electricity is converted to stable 5V alternating currents, there is provided carry out electrical parameter point to CPU processing modules
Analysis.
Described power transfer module, it is bridge rectifier mu balanced circuit, is either electric current and voltage transformer or is special
Switching power source chip coordinates peripheral circuit, mains electricity is converted to stable 3.6V direct currents, as electic protection
The power supply of device, or mains electricity is converted to stable 5V alternating currents, there is provided carry out electrical parameter point to CPU processing modules
Analysis, such as：Voltage, electric current, active power, reactive power, power factor, active energy, reactive energy etc..
Described CPU processing modules, by built-in algorithm, the DC signal come to power transfer module offer enters for it
Row analysis and monitoring, judge whether circuit the failures such as short circuit, excessively stream, overvoltage, electric leakage occurs in time and effectively, and determine corresponding
Action, while detect various electrical parameters：It is voltage, electric current, active power, reactive power, power factor, active energy, idle
Electric energy etc..
Described data memory module, the stateful and time of electric protective device is stored, including electrical parameter
And running status, electrical parameter include voltage, electric current, active power, reactive power, power factor, active energy, reactive energy,
Running status includes communication failure state, line fault conditions.Facilitate the investigation to cause of accident after accident.
Described communication interface modules, realizes protection device and the information exchange of host computer, and one side host computer can be to guarantor
Protection unit sends control instruction, controls the relay closure on relay protection module or disconnects, realizes remotely to the break-make of circuit
Control；Another aspect host computer reads the data in data memory module, or new operation journey is loaded into by communication interface modules
Sequence.
Described relay protection module, predominantly magnetic latching relay, when being failure to actuate, do not consume power；Mould is handled by CPU
Block directly provides the action signal of magnetic latching relay, and the contact of CPU processing modules meeting control relay is sent in control instruction
First voltage over zero when acted.Calculated with normal civil power 50HZ, the cycle that zero crossing occurs is 0.01 second, institute
10ms is less than with the time of failure response, can in shortest time internal cutting off circuit, circuit and electrical equipment are played in time and
It is effectively protected；Because contact is acted at voltage over zero, electric spark is not produced, avoids the danger of electrical fire,
The service life of contact is improved simultaneously.
Another object of the present invention is realized by following technical scheme：
It is a kind of can Self-resetting and remote reset electrical protection method, the step of comprising following order：
S1, in circuit under normal use, detect the size of electric current and voltage in real time, dashed forward when there is curtage
Change causes electric current too high or during overtension, and CPU processing modules send pulse control signal in time, control relay protection module
Relay disconnects, and realizes the protection to electrical equipment, now circuit enters electic protection off-state；
S2, in electic protection off-state, the size of electric current and voltage is still detected in real time, when electric current and voltage recover
After normal range (NR) and duration reach 0.5 second, then decision circuit recovers normal, and CPU processing modules send Pulse Width Control letter
Number, control the relay of relay protection module to connect, then the service restoration of electrical equipment is normal, and now circuit enters normal use
Situation.
The present invention compared with prior art, has the following advantages that and beneficial effect：
1st, the thinking that the present invention solves forceful electric power in the past with the thinking of light current is difficult to solve technical problem, with the thinking of Internet of Things
Solves the problem of management of operation and maintenance in the past.
2nd, in technical problem, the present invention is whole to analyze and manage by embedded system by the improvement to electronic circuit
Individual electric protective device, according to different functional requirements inside electric protective device, electric current is divided into three different voltage levels
Other loop, while the break-make of relay is just driven in voltage over zero, make the reliability of equipment, restorability and using the longevity
Life all greatly improves, and the protection philosophy of conventional electric protective device is " sacrificing oneself, protect other people ", though during electric fault
Electrical equipment can be so protected, but itself can all cause to damage.
3rd, in problem of management, because the present invention makes a distinction relay protection current loop and equipment current supply circuit, both
In the absence of direct relation, so when electric fault, relay protection module, which disconnects, has no effect on protection device normal in itself
Operation.After electric fault releases, protection device, can automatic closing relay, the i.e. voluntarily energization of restoring circuit by judging.
4th, the present invention allows protection device to network by setting communication module, can be in real time by electrical parameter by Internet of Things
Host computer is uploaded to running status, meanwhile, host computer can send control signal to protection device in real time, and protection device is carried out
Recover and operation, greatly reduce daily management mission, and conventional electric protective device often needed after electric fault compared with
More times and manpower are safeguarded.
Brief description of the drawings
Fig. 1 be it is of the present invention it is a kind of can Self-resetting and remote reset electric protective device structural representation；
Fig. 2 is the current direction schematic diagram of Fig. 1 described devices；
Fig. 3 is that the signal of Fig. 1 described devices flows to schematic diagram；
Fig. 4 is the structural representation of the electrical parameters detection device of Fig. 1 described devices；
Fig. 5 is the Self-resetting and remote reset implementation process logical schematic of Fig. 1 described devices.
Embodiment
With reference to embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are unlimited
In this.
It was found from accompanying drawing 1：The present invention comprises at least preposition protection module, power transfer module, CPU processing modules, data
Memory module, communication interface modules and relay protection module.The major function of each module is as follows with forming.
1) preposition protection module carries out preliminary filtering to 220V alternating currents, can filtered in the range of 220V ± 20%
Except most of sharp wave or impulse wave., can be in load both ends shunt capacitor or and load in series to the composition of preposition protection module
Inductor, or the various compound filter circuits being made up of electric capacity, inductance.
2) power transfer module, mains electricity is converted to stable 3.6V direct currents, as electric protective device
Power supply, or mains electricity is converted to stable 5V alternating currents, there is provided carry out electrical parameter analysis to CPU processing modules；Electricity
The composition of source modular converter, conventional bridge rectifier mu balanced circuit may be selected, electric current also may be selected and formed with voltage transformer, or
Special switching power source chip is selected to coordinate peripheral circuit to form.
3) CPU processing modules are the core of electric protective device, and it is by built-in algorithm, to power transfer module
There is provided the DC signal come to be analyzed and monitored, can in time and effectively judge whether circuit short circuit, excessively stream, mistake occurs
The failures such as pressure, electric leakage, and corresponding action is determined, while various electrical parameters can be detected：It is voltage, electric current, active power, idle
Power, power factor, active energy, reactive energy etc..
4) data memory module can store to the stateful and time of electric protective device, including electrical parameter and
Running status, electrical parameter include voltage, electric current, active power, reactive power, power factor, active energy, reactive energy etc.,
Running status includes communication failure state, line fault conditions etc., facilitates the investigation to cause of accident after accident.
5) communication interface modules is to realize the information exchange of protection device and host computer, and one side host computer can be to guarantor
Protection unit sends control instruction, relay closure on control protective unit or disconnects, and realizes and remotely the break-make of circuit is controlled；
The data in memory module on another aspect host computer read control device, or new operation journey is loaded into by communication module
Sequence.
6) relay protection module is mainly magnetic latching relay, when being failure to actuate, does not consume power.It is straight by CPU processing modules
The action signal that relay is provided is connect, CPU processing modules understand first electricity that the contact of control relay is sent in control instruction
Acted when pressing through zero point.Being calculated with normal civil power 50HZ, the cycle that zero crossing occurs is 0.01 second, so, failure is rung
The time answered is less than 10ms, timely and effective guarantor can be played to circuit and electrical equipment in shortest time internal cutting off circuit
Shield.Because contact is acted at voltage over zero, electric spark is not produced, is avoided the danger of electrical fire, is improved simultaneously
The service life of contact.
Accompanying drawing 2 describes processing and the application process of internal current of the present invention.
It was found from accompanying drawing 2：The electric current of the present invention is divided into three parts.1. loop is civil power distribution loop, i.e. 220V is single-phase
Electrical circuit is exchanged, electrical equipment is connected on this loop, its break-make can be controlled by relay.Relay is connected on power supply and turned
Change the mold block behind, when relay disconnects, power transfer module still can normal work, now, at relay protection module
In outside off-state, core of the invention, including preposition protection module, power transfer module, CPU processing modules, data
Memory module, communication interface modules and relay protection module still can normal work, so as to the Self-resetting for protection device and long-range
Reset provides possibility.2. loop is 5V ac circuits, main function is to be analyzed for CPU.1. loop is converted to back
Road 2. during, keep the waveform of alternating current constant, phase invariant, ensure that analysis result with directly to electrical equipment both ends
The result analyzed of voltage it is consistent；Amplitude presses 220：5 ratio is changed, and can reduce the wind that 220V detection detection bands are come
The danger that danger and protection device are leaked electricity in itself.3. loop is 3.6V DC loops, main function is protection device in-line power.
Accompanying drawing 3 describes processing and the application process of internal signal of the present invention.
It was found from accompanying drawing 3, the signal inside present system is broadly divided into two kinds, and one kind is detection signal, and another kind is
Control signal.Detection signal includes various electrical parameters, running status and voltage over zero signal.CPU processing modules are handed over low pressure
After stream electricity is analyzed, the electricity such as voltage, electric current, active power, reactive power, power factor, active energy, reactive energy are obtained
Parameter and voltage over zero signal.In addition, the detection signal of the internal system also normal operating condition including protection device, relay
Guard mode and fault-alarming state information.Control signal includes the pulse control that CPU processing modules are sent to relay protection module
Signal processed, and the clock sync signal and remote control signal that host computer is sent to protection device.
Accompanying drawing 4 describes the structural representation for the electrical parameters detection device that the present invention is analyzed electrical parameter and monitored.
It was found from accompanying drawing 4, electrical parameters detection device of the present invention is mainly examined by the electrical parameter being arranged in CPU processing modules
Chip is surveyed, the low-voltage ac signal after Power convert is analyzed and detected, the testing result of electrical parameters detection chip is direct
It is sent in CPU processor, CPU processor is analyzed and handled to electric signal, so as to analyze and calculate the reality of circuit
The electrical parameters such as voltage, electric current, active power, reactive power, power factor and voltage over zero signal.
Accompanying drawing 5 describes Self-resetting and the remote reset implementation process logical schematic of the present invention, Self-resetting with it is long-range multiple
Position implementation process is specific as follows：
Whether judgment means are in auto state：
If A, being in auto state, whether detection electric current, voltage are normal：
If normal, whether detection normal time reaches n milliseconds, detects whether current relay is connected if reaching：
(1) if current relay is connected, whether return continues detection electric current, voltage normal；
(2) if current relay access failure, detect whether to reach zero crossing, postpone n microseconds if reaching and send pulse
Control signal, relay redirect；
If abnormal, detect whether current relay is connected：
(1) if current relay access failure, whether return continues detection electric current, voltage normal；
(2) if current relay is connected, detect whether to reach zero crossing, postpone n microseconds if reaching and send pulse control
Signal processed, relay redirect；
If B, being not in auto state, remote control signal has been detected whether：
Whether if so, it is normal then to detect electric current, voltage：
(1) if normal, whether detection normal time reaches n milliseconds：
If reaching, detect whether to reach zero crossing, postpone n microseconds if reaching and send pulse control signal, relay
Redirect；
If not up to, returning, continue whether judgment means are in auto state；
(2) it is if abnormal, return, continue whether judgment means are in auto state.
It was found from accompanying drawing 5, the realization of reset mode of the invention, dependent on sentencing incessantly to real-time current and voltage
It is disconnected.No matter distribution loop where electrical equipment whether connect or electrical equipment whether normal use, i.e., no matter circuit is in normal
Service condition or electic protection off-state, the core of the present invention is not influenceed, including preposition protection module, power supply turn
Change the mold the normal work of block, CPU processing modules, data memory module, communication interface modules and relay protection module.In circuit just
Under normal service condition, the present invention detects the size of electric current and voltage in real time, and electric current mistake is caused when there is curtage mutation
During high or overtension, CPU processing modules send pulse control signal in time, and control relay disconnects, realized to electrical equipment
Protection, now circuit enter electic protection off-state.In electic protection off-state, the same detection electricity in real time of the present invention
The size of stream and voltage, after electric current and voltage, which recover normal range (NR), reaches 0.5 second, then decision circuit recovers normal, CPU processing
Module sends pulse control signal, and control relay is connected, then the service restoration of electrical equipment is normal, and now circuit enters normal
Service condition.
Above-described embodiment is the preferable embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, other any Spirit Essences without departing from the present invention with made under principle change, modification, replacement, combine, simplification,
Equivalent substitute mode is should be, is included within protection scope of the present invention.
Claims (10)
1. it is a kind of can Self-resetting and remote reset electrical protection method, the step of comprising following order：
S1, in circuit under normal use, detect the size of electric current and voltage in real time, made when there is curtage mutation
Into electric current is too high or during overtension, CPU processing modules send pulse control signal in time, control the relay of relay protection module
Device disconnects, and realizes the protection to electrical equipment, now circuit enters electic protection off-state；
S2, in electic protection off-state, the size of electric current and voltage is still detected in real time, when electric current and voltage recover normal
After scope and duration reach 0.5 second, then decision circuit recovers normal, and CPU processing modules send pulse control signal, control
The relay of relay protection module processed is connected, then the service restoration of electrical equipment is normal, and now circuit enters normal use situation；
Self-resetting and remote reset implementation process are specific as follows：
Whether judgment means are in auto state：
If A, being in auto state, whether detection electric current, voltage are normal：
If normal, whether detection normal time reaches n milliseconds, detects whether current relay is connected if reaching：
(1) if current relay is connected, whether return continues detection electric current, voltage normal；
(2) if current relay access failure, detect whether to reach zero crossing, postpone n microseconds if reaching and send Pulse Width Control
Signal, relay redirect；
If abnormal, detect whether current relay is connected：
(1) if current relay access failure, whether return continues detection electric current, voltage normal；
(2) if current relay is connected, detect whether to reach zero crossing, postpone n microseconds if reaching and send Pulse Width Control letter
Number, relay redirects；
If B, being not in auto state, remote control signal has been detected whether：
Whether if so, it is normal then to detect electric current, voltage：
(1) if normal, whether detection normal time reaches n milliseconds：
If reaching, detect whether to reach zero crossing, postpone n microseconds if reaching and send pulse control signal, relay redirects；
If not up to, returning, continue whether judgment means are in auto state；
(2) it is if abnormal, return, continue whether judgment means are in auto state.
2. for realize described in claim 1 can one kind of electrical protection method of Self-resetting and remote reset can Self-resetting and remote
Cheng Fuwei electric protective device, it is characterised in that：Including preposition protection module, power transfer module, CPU processing modules, after
Electric protection module, data memory module and communication interface modules, described preposition protection module are simultaneously connected in 220V electric lines
On, make described electric protective device and electrical equipment into parallel relationship；Preposition protection module is followed by power transfer module, power supply
CPU processing modules, data memory module and communication interface modules are connected behind modular converter respectively；CPU processing modules are directly controlled
Relay protection module processed, relay protection module by relay series connection in 220V electric lines, make relay protection module with
Electrical equipment is into series relationship.
3. it is according to claim 2 can Self-resetting and remote reset electric protective device, it is characterised in that：Before described
Protection module is put, in the range of 220V ± 20%, 220V alternating currents are tentatively filtered, for filtering out sharp wave or pulse
Ripple.
4. it is according to claim 2 can Self-resetting and remote reset electric protective device, it is characterised in that：Before described
Protection module is put, is electrical equipment both ends capacitor in parallel, is either inductor or be electricity that electrical equipment both ends are connected
Hold, the compound filter circuit of inductor composition.
5. it is according to claim 2 can Self-resetting and remote reset electric protective device, it is characterised in that：
Described power transfer module, mains electricity is converted to stable 3.6V direct currents, as electric protective device
Power supply, or mains electricity is converted to stable 5V alternating currents, there is provided carry out electrical parameter analysis to CPU processing modules.
6. it is according to claim 2 can Self-resetting and remote reset electric protective device, it is characterised in that：Described electricity
Source modular converter, it is bridge rectifier mu balanced circuit, is either electric current and voltage transformer or to be that switching power source chip coordinates outer
Enclose circuit.
7. it is according to claim 2 can Self-resetting and remote reset electric protective device, it is characterised in that：Described
CPU processing modules, the DC signal come to power transfer module offer are analyzed and monitored, and in time and effectively judge outlet
Whether road there is short circuit, excessively stream, overvoltage, leak current fault, and determines corresponding action, while detects various electrical parameters：Voltage, electricity
Stream, active power, reactive power, power factor, active energy, reactive energy.
8. it is according to claim 2 can Self-resetting and remote reset electric protective device, it is characterised in that：Described number
According to memory module, the stateful and time of electric protective device is stored, including electrical parameter and running status, electrical parameter
Including voltage, electric current, active power, reactive power, power factor, active energy, reactive energy, running status includes communication event
Barrier state, line fault conditions.
9. it is according to claim 2 can Self-resetting and remote reset electric protective device, it is characterised in that：Described is logical
Believe interface module, realize protection device and the information exchange of host computer, one side host computer can send control to protection device and refer to
Order, control the relay closure on relay protection module or disconnect, realize and remotely the break-make of circuit is controlled；On the other hand it is upper
The machine-readable data taken in data memory module, or new operation program is loaded into by communication interface modules.
10. it is according to claim 2 can Self-resetting and remote reset electric protective device, it is characterised in that：Described
Relay protection module, it is magnetic latching relay, when being failure to actuate, does not consume power；By CPU processing modules directly provide magnetic keep after
The action signal of electrical equipment, CPU processing modules understand first voltage over zero that the contact of control relay is sent in control instruction
Shi Jinhang is acted.
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| CN201510176552.2A CN104836189B (en) | 2015-04-14 | 2015-04-14 | It is a kind of can Self-resetting and remote reset electric protective device and its method |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106298365A (en) * | 2016-08-08 | 2017-01-04 | 深圳唯创知音电子有限公司 | A kind of control relay circuit and relay |
| CN108667320B (en) * | 2018-06-22 | 2024-02-20 | 江苏理工学院 | Switch power supply with overcurrent protection and self-reset |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1257334A (en) * | 1999-12-16 | 2000-06-21 | 常熟开关厂 | Intelligent controller for communicable plastics casing circuit breaker |
| CN201682263U (en) * | 2010-05-19 | 2010-12-22 | 王士纲 | Leakage protection device |
| CN103311884A (en) * | 2013-04-23 | 2013-09-18 | 上海良信电器股份有限公司 | Non-stick overvoltage and under-voltage protector with leakage protection function |
| CN203826922U (en) * | 2014-05-04 | 2014-09-10 | 国家电网公司 | An intelligent air switch device |
| CN204992518U (en) * | 2015-04-14 | 2016-01-20 | 华南理工大学建筑设计研究院 | Can restore to throne certainly and long -range electrical protection device that restores to throne |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2560125Y (en) * | 2002-08-07 | 2003-07-09 | 上海美好电器有限公司 | Leakage protection socket |
-
2015
- 2015-04-14 CN CN201510176552.2A patent/CN104836189B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1257334A (en) * | 1999-12-16 | 2000-06-21 | 常熟开关厂 | Intelligent controller for communicable plastics casing circuit breaker |
| CN201682263U (en) * | 2010-05-19 | 2010-12-22 | 王士纲 | Leakage protection device |
| CN103311884A (en) * | 2013-04-23 | 2013-09-18 | 上海良信电器股份有限公司 | Non-stick overvoltage and under-voltage protector with leakage protection function |
| CN203826922U (en) * | 2014-05-04 | 2014-09-10 | 国家电网公司 | An intelligent air switch device |
| CN204992518U (en) * | 2015-04-14 | 2016-01-20 | 华南理工大学建筑设计研究院 | Can restore to throne certainly and long -range electrical protection device that restores to throne |
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Address after: 510640 Design Institute Building, South China University of Technology, Tianhe District, Guangzhou City, Guangdong Province Patentee after: South China University of Technology Architectural Design Research Institute Co., Ltd. Address before: 510640 Guangzhou Institute of architectural design and research, South China University of Technology, Tianhe District No. five mountain road, Guangdong, China Patentee before: Architectural Design Research Institute of SCUT |
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