CN107276024B - A kind of electric leakage monitoring device - Google Patents
A kind of electric leakage monitoring device Download PDFInfo
- Publication number
- CN107276024B CN107276024B CN201710707619.XA CN201710707619A CN107276024B CN 107276024 B CN107276024 B CN 107276024B CN 201710707619 A CN201710707619 A CN 201710707619A CN 107276024 B CN107276024 B CN 107276024B
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- monitoring device
- breaker
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- power
- electric current
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
- H02H3/32—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0007—Details of emergency protective circuit arrangements concerning the detecting means
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/006—Calibration or setting of parameters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/04—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/04—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned
- H02H3/044—Checking correct functioning of protective arrangements, e.g. by simulating a fault
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- Breakers (AREA)
Abstract
The present invention provides a kind of electric leakage monitoring devices, wherein the electric leakage monitoring device includes：Monitoring device and breaker device, the monitoring device are electrically connected with the breaker device, and the monitoring device includes zero sequence transformer, and the power supply electric wire of power supply to power load passes through the through-hole of zero sequence transformer setting to be connected with the breaker device；The monitoring device, for determining the zero sequence transformer in the first induced electricity flow valuve being sequentially output every setting time interval, and the difference of adjacent first induced electricity flow valuve twice is calculated, when determining that the difference is more than setting electric current threshold value, power-off control instruction is sent to the breaker device；The breaker device, for when receiving the power-off control instruction, being powered off to the power load.The embodiment of the present invention avoids the repetitious tripping of breaker simultaneously and can prevent from getting an electric shock and endanger when the difference for determining adjacent the first induced electricity flow valuve twice is more than predetermined current threshold.
Description
Technical field
The present invention relates to safety monitoring technology fields, in particular to a kind of electric leakage monitoring device.
Background technology
The problem of leaky of electrical equipment is related to safety utilization of electric power, or even personal safety is directly affected, so, it is supplying
Installation electric leakage monitoring device is most important in electric line.
In current engineering practice, generally prevent electrical equipment electric leakage from generating to the person by installation " earth leakage protective device "
The injury of safety.By taking most common two-phase alternating current as an example, when existing " earth leakage protective device " dispatches from the factory, internal circuit structure is just
Its safe current threshold value is determined, when the leakage current value that " earth leakage protective device " detects is more than protective current value, will control
System power-off.
But in engineering practice, in especially outdoor engineering in, as cable usage time increases, dielectric insulation
Ability declines, and leaky can increase therewith, and leakage current gradually increases.Meanwhile with the variation of ambient humidity, leakage current also can
Change therewith, for example the leakage current of rainy weather can be more than the weather that the sun is shining.If the safe current threshold of earth leakage protective device
Be worth the too small of selection, then can be regular cut off the power, although the safety for the personnel that possibility gets an electric shock can be protected in this way,
But cutting off the power for earth-leakage monitoring device frequency can cause so that usually power off in circuit, to cause load equipment normal
Work.And if above-mentioned safe current threshold value to be arranged to effect that is excessive, and can leading to not to play protection life safety.
Invention content
In view of this, the purpose of the present invention is to provide a kind of electric leakage monitoring devices to meet user to solve the above problems
Demand.
In a first aspect, an embodiment of the present invention provides a kind of electric leakage monitoring devices, including：Monitoring device and breaker device,
The monitoring device is electrically connected with the breaker device, and the monitoring device includes zero sequence transformer, and power supply is negative to electricity consumption
The power supply electric wire of load passes through the through-hole of zero sequence transformer setting to be connected with the breaker device；
The monitoring device, for determining the zero sequence transformer in the first sense being sequentially output every setting time interval
Induced current value, and the difference of adjacent first induced electricity flow valuve twice is calculated, when determining that the difference is more than setting electric current threshold value,
Power-off control instruction is sent to the breaker device；
The breaker device, for when receiving the power-off control instruction, being powered off to the power load.
With reference to first aspect, an embodiment of the present invention provides the first possible embodiment of first aspect, the prisons
Control device further includes processor and electronic commutator, the electronic commutator respectively with the processor and the zero sequence transformer
Electrical connection；
The zero sequence transformer, for when the power supply electric wire leaks electricity, induced current to be exported to the electronic commutator；
The electronic commutator, for being converted to the induced current according to the setting time interval by analog signal
Digital signal, and the digital signal is sent to the processor successively；
The processor, specifically in the difference for determining adjacent digital signal twice more than the setting electric current threshold
When value, the power-off control instruction is sent to the breaker device.
With reference to first aspect, an embodiment of the present invention provides second of possible embodiments of first aspect, described disconnected
Electric installation includes breaker and electrically operated component, and the electrically operated component is electrically connected with the breaker and the monitoring device respectively
It connects；The breaker is provided with breaker, and when the breaker is located at the first setting position, breaker is defeated to the power load
Power transmission stream, when the breaker is located at the second setting position, breaker stops conveying electric current to the power load；
The electrically operated component, when specifically for receiving the power-off control instruction that the monitoring device is sent, control
The breaker is made by first setting position to be changed to second setting position.
Second of possible embodiment with reference to first aspect, an embodiment of the present invention provides the third of first aspect
Possible embodiment, the breaker device further include handle position detection part, and handle is provided on the electrically operated component,
When the breaker is located at first setting position, the handle is directed toward the first direction initialization；The breaker is located at described
When the second setting position, the handle is directed toward the second direction initialization；
The handle position detection part, the directional information for detecting the handle, and the directional information is sent
To the monitoring device；
The monitoring device is additionally operable to after sending the power-off control instruction to the electrically operated component, according to described
Directional information determines whether the breaker is completed to power off.
With reference to first aspect, an embodiment of the present invention provides the 4th kind of possible embodiment of first aspect, the prisons
It further includes test circuit and processor to control device, and the first control switch is provided in the test circuit and tests electric current
Device, the test current feedback circuit are electrically connected with the processor, the firewire of described test circuit one end and the power supply electric wire
Connection, the other end are connect with the zero curve for powering electric wire, one end that the test circuit is connect with the firewire or with institute
The other end for stating zero curve connection passes through the through-hole of zero sequence transformer setting, described when the first control switch is closed
The circuit closed that test circuit, the firewire, the zero curve and the power supply are formed；
The test current feedback circuit is used for after the first control switch is closed, under the control of the processor,
Gradually increased current value is generated, and the difference of adjacent current value twice gradually increases；
The zero sequence transformer is specifically used in the circuit closed, exports the second induced electricity flow valuve；
The monitoring device is specifically used for the difference based on adjacent both sides the second induced electricity flow valuve and the setting electric current
Threshold value sends power-off control instruction to the breaker device.
With reference to first aspect, an embodiment of the present invention provides the 5th kind of possible embodiment of first aspect, the prisons
Control device further includes power-off instruction button；
Described device, for when the difference for determining adjacent first induced electricity flow valuve twice is more than setting electric current threshold value, controlling
The power-off instruction button is made to bounce.
With reference to first aspect, an embodiment of the present invention provides the 6th kind of possible embodiment of first aspect, the prisons
Control device is additionally provided with automatic protection functions selecting switch；
Automatic protection functions selecting switch, the state of a control for controlling the monitoring device；
The monitoring device is specifically used for being under enabling mode when the automatic protection functions selecting switch, in determination
When the difference of adjacent first induced electricity flow valuve twice is more than the setting electric current threshold value, power-off control is sent to the breaker device
Instruction.
With reference to first aspect, an embodiment of the present invention provides the 7th kind of possible embodiment of first aspect, the prisons
It further includes multiple first parameter set buttons and multiple second parameter set buttons, each first parameter set button pair to control device
Different setting electric current threshold values is answered, each second parameter set button corresponds to different setting time intervals, so that user passes through
It operates first parameter set button and selects the different setting electric current threshold values, and set by operating second parameter
It sets button and selects the different setting time intervals.
The 7th kind of possible embodiment with reference to first aspect, an embodiment of the present invention provides the 8th kind of first aspect
Possible embodiment, the monitoring device further include communication interface；
The monitoring device is additionally operable to pass through the setting electric current threshold value and the first induced electricity flow valuve detected
The communication interface is sent to background server；And receive new time interval that the background server is sent and new
When setting electric current threshold value, the setting time interval is adjusted according to the new setting time interval, and according to described new
Setting electric current threshold value described in setting electric current adjusting thresholds.
With reference to first aspect, an embodiment of the present invention provides the 9th kind of possible embodiment of first aspect, the prisons
It further includes display screen to control device；
The monitoring device is additionally operable to show the first induced electricity flow valuve by the display screen, so as to work
It is checked as personnel.
Compared in the prior art, which includes monitoring device and breaker device, and monitoring device determines zero
Sequence mutual inductor calculates adjacent difference faradic twice in the first induced electricity flow valuve being sequentially output every setting time interval
Value sends power-off control instruction, one side of this monitoring device when determining that the difference is more than setting electric current threshold value to breaker device
Face can detect leakage current, on the other hand, when determining generation electric leakage accident, can be powered off in time.
To enable the above objects, features and advantages of the present invention to be clearer and more comprehensible, preferred embodiment cited below particularly, and coordinate
Appended attached drawing, is described in detail below.
Description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 shows the structural schematic diagram for the first electric leakage monitoring device that the embodiment of the present invention is provided；
Fig. 2 shows the structural schematic diagrams for second of electric leakage monitoring device that the embodiment of the present invention is provided；
Fig. 3 shows the structural schematic diagram for the third electric leakage monitoring device that the embodiment of the present invention is provided；
Fig. 4 shows three kinds of position relationship schematic diagrams of the test circuit and power supply electric wire that the embodiment of the present invention is provided；
Fig. 5 shows a kind of pictorial diagram for electric leakage monitoring device that the embodiment of the present invention is provided.
Icon：101- monitoring devices；1011- zero sequence transformer；102- breaker devices；1012- processors；1013- electronics
Converter；1021- breakers；The electrically operated components of 1022-；10211- breakers；401- power loads；402- tests electric current
Device；501- through-holes；The control switches of 502- first；503- powers off instruction button；504- automatic protection functions selecting switch；505- joins
Number setting button；506- communication interfaces；507- display screens；508- power switches；509- through-holes；Handle position detection part-
1023。
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
Middle attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only
It is a part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is real
Applying the component of example can be arranged and designed with a variety of different configurations.Therefore, below to provide in the accompanying drawings the present invention
The detailed description of embodiment is not intended to limit the range of claimed invention, but is merely representative of the selected reality of the present invention
Apply example.Based on the embodiment of the present invention, the institute that those skilled in the art are obtained without making creative work
There is other embodiment, shall fall within the protection scope of the present invention.
An embodiment of the present invention provides a kind of electric leakage monitoring devices, as shown in Figure 1, being filled including monitoring device 101 and power-off
102 are set, monitoring device 101 is electrically connected with breaker device 102, which includes zero sequence transformer 1011, power supply
Power supply electric wire to power load passes through the through-hole of the sense setting of zero sequence transformer 1011 and breaker device 102 to connect.
Zero sequence transformer can be arranged inside monitoring device, be made of coil, and being formed has through-hole type structure, works as power supply
When electric wire is passed through from the through-hole, under normal circumstances, if power supply electric wire does not leak electricity, the power supply that zero sequence transformer detects
The zero curve of electric wire and the vector sum of firewire electric current are zero, to which zero sequence transformer does not have induced current output.
Monitoring device 101, for determining zero sequence transformer 1011 in the first sense being sequentially output every setting time interval
Induced current value, and the difference of adjacent first induced electricity flow valuve twice is calculated, when determining that the difference is more than setting electric current threshold value, to
Breaker device 102 sends power-off control instruction.
Setting time interval herein can be 0.5s, can also be 1s, depending on specific application places, setting electricity
Stream threshold value generally occurs electricity and hinders the value occurred when accident, for example, setting the threshold value as 30mA, time interval is set as 0.5 second,
If from 8:00 starts to monitor, such as 8:00:00 monitor the first induced electricity flow valuve be 15mA, 8:00:05 monitor first
Induced electricity flow valuve is 32mA, although 32mA is more than 30mA, monitoring device will not control breaker device power-off at this time, because
The difference of 32mA and 15mA is less than 30mA.
A kind of preferable embodiment, in the technical solution that the embodiment of the present invention proposes, as shown in Fig. 2, monitoring device
101 further include processor 1012 and electronic commutator 1013, and the electronic commutator 1013 is mutual with processor 1012 and zero sequence respectively
Sensor 1011 is electrically connected.
Zero sequence transformer 1011, for when detecting power supply electric wire electric leakage, induced electricity to be exported to electronic commutator 1013
Stream.
Electronic commutator 1013, for induced current to be converted to digital letter by analog signal according to setting time interval
Number, and digital signal is sent to the processor 1012 successively.
Processor 1012, specifically in the difference for determining adjacent digital signal twice more than setting electric current threshold value
When, send power-off control instruction to breaker device 102.
The first above-mentioned induced electricity flow valuve is since leakage current occurs in power supply electric wire, and zero sequence transformer is by sensing
Leakage current and generate induced current, by the analog-to-digital conversion of electronic commutator, be changed into digital signal, digital signal is corresponding
Numerical value is the first induced electricity flow valuve.
Breaker device 102, for when receiving power-off control instruction, being powered off to power load.
A kind of preferable embodiment, in the technical solution that the embodiment of the present invention proposes, as shown in figure 3, breaker device
102 include breaker 1021 and electrically operated component 1022, electrically operated component 1022 respectively with breaker 1021 and monitoring device 101
Electrical connection, breaker 1021 is provided with breaker 10211, when which is located at the first setting position, breaker 1021
Electric current is conveyed to power load, when breaker 10211 is located at the second setting position, breaker 1021 stops conveying power load
Electric current.
Electrically operated component 1022, specifically for receive monitoring device 101 transmission power-off control instruction when, control switch
Lock 10211 is changed by the first setting position to the second setting position.
Certainly, when electrically operated component receives the power control instruction of monitoring device transmission, breaker can also be controlled
Changed to the first setting position by the second setting position, i.e., so that breaker electrifying.
Electrically operated component herein can be motor, which can control the position change of breaker, disconnected to complete
Electricity is powered, and in this application, when breaker is in the first setting position, that is, closes a floodgate, and when being in the second setting position, that is, divides
It is disconnected.
A kind of preferable embodiment, in the technical solution that the embodiment of the present invention proposes, breaker device further includes handle
Position detection component is provided with handle on electrically operated component, and when breaker is located at the first setting position, handle is directed toward the first setting
Direction；When breaker is located at the second setting position, handle is directed toward the second direction initialization.
Handle position detection part, the directional information for detecting handle, and directional information is sent to monitoring device.
Monitoring device, is additionally operable to after sending power-off control instruction to electrically operated component, and open circuit is determined according to directional information
Whether device, which is completed, powers off.
For example, if breaker device be located at Jing Kuang, field remote districts, by artificially go detection when monitoring device issue it is disconnected
After electric control instruction, whether which really cuts off electric current, it is clear that inconvenient, so that it may to pass through handle position test section
Whether part, detection circuit breaker are completed to power off.
A kind of preferable embodiment, in the technical solution that the embodiment of the present invention proposes, monitoring device further includes test
Circuit and processor are provided with the first control switch and test current feedback circuit, test current feedback circuit and place in test circuit
Device electrical connection is managed, test circuit one end is connect with the firewire of power supply electric wire, and the other end is connect with the zero curve of power supply electric wire, test electricity
One end that road is connect with firewire or the other end being connected with zero curve pass through the through-hole of zero sequence transformer setting, are opened in the first control
When closing, circuit closed that test circuit, firewire, zero curve and power supply are formed.
Current feedback circuit is tested, for after the first control switch is closed, under the control of a processor, generating and gradually increasing
Current value, and the difference of adjacent current value twice gradually increases.
Wherein, test current feedback circuit by capacitance and/or silicon-controlled can be constituted, naturally it is also possible to by other component structure
At as long as satisfaction can generate the current value of variation under the control of a processor after accessing circuit.
Zero sequence transformer is specifically used in above-mentioned circuit closed, exports the second induced electricity flow valuve.
The second induced electricity flow valuve herein is due to installing test circuit in monitoring device, and one end of test circuit passes through
Zero sequence transformer, so that the induced current that zero sequence transformer generates.
Monitoring device is specifically used for difference and setting electric current threshold value based on adjacent second induced electricity flow valuve twice, to
Breaker device sends power-off control instruction.
Above-mentioned test circuit, for detecting whether the monitoring device can work normally, when the first control switch is worked
When personnel or user press, if the monitoring device can work normally, power load can be powered off.
The concrete operating principle of test circuit is, after forming closed circuit with firewire, zero curve and power supply, only with
One end of zero curve connection or the other end being connect with firewire pass through the through-hole of zero sequence transformer setting so that in zero sequence transformer
Current phasor and be not zero, be equivalent to and artificially cause a kind of electric leakage.
It is this it is artificial caused by so that current phasor in zero sequence transformer and being not zero, have following several situations:
(1) as shown in (a) in Fig. 4, test circuit one end is connect with the firewire of power supply electric wire, the other end and power supply electric wire
Zero curve connection, what one end that test circuit connect with firewire or the other end being connected with zero curve were arranged across zero sequence transformer
Through-hole, when the first control switch is closed, the circuit closed that test circuit, firewire, zero curve and power supply are formed is specific to detect
Process such as above-described embodiment.
(2) as shown in (b) in Fig. 4, the through-hole of zero sequence transformer setting is divided into through-hole import and through-hole outlet, test electricity
The zero curve of the one end on road and power supply electric wire is connected to the through-hole import of zero sequence transformer, and the other end is connect with the firewire of power supply electric wire
It is exported in the through-hole of zero sequence transformer, when the first control switch is closed, test circuit, firewire, zero curve and power supply are formed
Circuit closed, in (b), through-hole import be close to power supply one end, through-hole outlet for close to power load one end.
(2) shown in (c) as shown in Figure 4, test circuit passes through zero sequence transformer, is not connect with zero curve or firewire,
When first switch is closed, the circuit closed of test circuit formation.
In Fig. 4,401 be power load, and 402 be test current feedback circuit, is being not shown in figure processor.
Above-mentioned three kinds of situations, although the connection type of test circuit is different, after the first control switch is closed,
So that by the current imbalance in zero sequence transformer, so that zero sequence transformer exports the second induced electricity flow valuve.
In order to achieve the purpose that monitoring device powers off, the test current feedback circuit in test circuit is electrically connected with processor,
After the first configuration switch is closed, processor tests current feedback circuit according to the instruction control of setting so that test circuit exports
Gradual increased current value, and the difference of adjacent current value twice gradually increases.Then if monitoring device is working properly, however, it is determined that
When the difference of adjacent second induced electricity flow valuve twice is more than setting electric current threshold value, control breaker device power-off.
If monitoring device work is abnormal, it is more than setting electricity in the difference for determining adjacent second induced electricity flow valuve twice
When flowing threshold value, breaker device power-off will not be controlled, or be less than in the difference for determining adjacent second induced electricity flow valuve twice and set
When constant current threshold value, with regard to the progress of control breaker device, the electricity went off.
A kind of preferable embodiment, in the technical solution that the embodiment of the present invention proposes, monitoring device further includes power-off
Instruction button.
Monitoring device is additionally operable to when the difference for determining adjacent first induced electricity flow valuve twice is more than setting electric current threshold value,
The power-off instruction button is controlled to bounce.
The reason of power-off instruction button can facilitate user to check power-off after a loss of power, for example, if sending the power-off
Instruction button bounces, you can with determination, be since electric leakage monitoring device detects the power-off that carries out of electric leakage, if it find that
The power-off instruction button does not bounce, then can be determined that the power-off that other modes carry out.
A kind of preferable embodiment, in the technical solution that the embodiment of the present invention proposes, monitoring device is additionally provided with certainly
Dynamic defencive function selecting switch.
Automatic protection functions selecting switch, the state of a control for controlling monitoring device.
For example, when automatic protection functions selecting switch is located at " enabling " position, control monitoring device normal work.
When the automatic protection functions selecting switch is under " forbidding " pattern, monitoring device measures the first induced electricity in real time
Flow valuve, and calculate adjacent first induced electricity flow valuve twice difference, but not to the breaker device send power-off control instruction.
Monitoring device is specifically used for being under enabling mode when automatic protection functions selecting switch, determine it is adjacent twice
When the difference of first induced electricity flow valuve is more than setting electric current threshold value, power-off control instruction is sent to breaker device.
A kind of preferable embodiment, in the technical solution that the embodiment of the present invention proposes, monitoring device further includes multiple the
One parameter set button and multiple second parameter set buttons, each first parameter set button correspond to different setting electric current thresholds
Value, each second parameter set button correspond to different setting time intervals, so that user is pressed by operating the first parameter setting
Button selects different setting electric current threshold values, and selects different setting time intervals by operating the second parameter set button.
For example, including 3 the first parameter set buttons can be used for that setting electric current threshold value is arranged, binary combination has eight kinds
State, for setting 8 grades of different current thresholds, if 30mA~100mA, 10mA are one grade.
Including 2 the second parameter set buttons can be used for that setting time interval is arranged, binary combination has 4 kinds of states,
For setting 4 grades of different time intervals, such as 0.5~2 second, 0.5 second was one grade.
A kind of preferable embodiment, in the technical solution that the embodiment of the present invention proposes, monitoring device further includes multiple
Third parameter set button, each third parameter set button correspond to different physical address.
This is to use radix-2 algorithm, naturally it is also possible to is configured using method for distinguishing.
A kind of preferable embodiment, in the technical solution that the embodiment of the present invention proposes, monitoring device further includes communication
Interface.
Monitoring device is additionally operable to setting electric current threshold value and the first induced electricity flow valuve detected passing through the communication interface
It is sent to background server；And receive new setting time interval and new setting electric current that the background server is sent
When threshold value, according to the new setting time interval adjustment setting time interval, and according to new setting electric current adjusting thresholds
Setting electric current threshold value.
For example, if multiple traffic light intersections in area of Pekinese one are provided with electric leakage monitoring device, background service
Device can be connected with each electric leakage monitoring device by above-mentioned communication interface.Each electric leakage monitoring device all have oneself only one
The first induced current detected and setting electric current threshold value are sent to background server by physical address, electric leakage monitoring device, after
Platform server can determine the need for regenerating by first induced current setting electric current threshold value, setting time interval with
And whether need that staff is notified to repair.When background work personnel determination needs to reset current threshold and/or needs
When resetting setting time interval, then new current threshold and/or new time interval can be sent to physically
The electric leakage monitoring device of location pairing.
A kind of preferable embodiment, in the technical solution that the embodiment of the present invention proposes, monitoring device further includes display
Screen.
Monitoring device is additionally operable to show the first induced electricity flow valuve by display screen, so that staff looks into
It sees.
Here, the setting of display screen can intuitively show the first induced electricity flow valuve very much, and user or staff can
Whether to have leaky at present by display screen understanding.
A kind of preferable embodiment is provided with power switch on monitoring device, for control the opening of monitoring device with
It closes, when power switch is closed, monitoring device does not work.
In order to which image is shown electric leakage monitoring device, Fig. 5 is the pictorial diagram of the electric leakage monitoring device, in Fig. 5
The figure on the left side is monitoring device, and the figure on the right is breaker device, and processor and electronic commutator are respectively positioned on inside monitoring device, can
To see that through-hole 501 made of zero sequence transformer setting, the first control switch 502, power-off refer on the shell of the monitoring device
Show button 503, automatic protection functions selecting switch 504, parameter set button 505, communication interface 506, display screen 507 and power supply
Switch 508；The through-hole 509, breaker 1021, electrically operated component 1022 being arranged on-board the circuit breaker can be seen on breaker device
With handle position detection part 1023.
Compared in the prior art, which includes monitoring device and breaker device, and monitoring device determines zero
Sequence mutual inductor calculates adjacent first induced current twice in the first induced electricity flow valuve being sequentially output every setting time interval
The difference of value sends power-off control instruction, this monitoring dress when determining that the difference is more than setting electric current threshold value to breaker device
On the one hand leakage current can be detected by setting, on the other hand, when determining generation electric leakage accident, can be powered off in time.
By can see in Fig. 5, the through-hole 501 of zero sequence transformer setting is located inside monitoring device, certain monitoring dress
Larger-diameter zero sequence transformer can be had with external one by setting, convenient for passing through for the power supply electric wire that makes diameter thicker.
It should be noted that：Similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent attached drawing in a attached drawing.
In the description of the present invention, it should be noted that term "center", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, or be somebody's turn to do
Invention product using when the orientation or positional relationship usually put, be merely for convenience of description of the present invention and simplification of the description, without
It is instruction or implies that signified device or element must have a particular orientation, with specific azimuth configuration and operation, therefore not
It can be interpreted as limitation of the present invention.In addition, term " first ", " second ", " third " etc. are only used for distinguishing description, and cannot manage
Solution is instruction or implies relative importance.
In the description of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " setting ",
" installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be fixedly connected, may be a detachable connection or one
Connect to body；It can be mechanical connection, can also be electrical connection；It can be directly connected, it can also be indirect by intermediary
It is connected, can is the connection inside two elements.For the ordinary skill in the art, on being understood with concrete condition
State the concrete meaning of term in the present invention.
Finally it should be noted that：Embodiment described above, only specific implementation mode of the invention, to illustrate the present invention
Technical solution, rather than its limitations, scope of protection of the present invention is not limited thereto, although with reference to the foregoing embodiments to this hair
It is bright to be described in detail, it will be understood by those of ordinary skill in the art that：Any one skilled in the art
In the technical scope disclosed by the present invention, it can still modify to the technical solution recorded in previous embodiment or can be light
It is readily conceivable that variation or equivalent replacement of some of the technical features；And these modifications, variation or replacement, do not make
The essence of corresponding technical solution is detached from the spirit and scope of technical solution of the embodiment of the present invention.The protection in the present invention should all be covered
Within the scope of.Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. a kind of electric leakage monitoring device, which is characterized in that including：Monitoring device and breaker device, the monitoring device with it is described
Breaker device is electrically connected, and the monitoring device includes zero sequence transformer, and the power supply electric wire of power supply to power load passes through institute
The through-hole for stating zero sequence transformer setting is connected with the breaker device；
The monitoring device, for determining the zero sequence transformer in the first induced electricity being sequentially output every setting time interval
Flow valuve, and the difference of adjacent first induced electricity flow valuve twice is calculated, when determining that the difference is more than setting electric current threshold value, to institute
It states breaker device and sends power-off control instruction；
The breaker device, for when receiving the power-off control instruction, being powered off to the power load；
The breaker device includes breaker, electrically operated component and handle position detection part, the electrically operated component respectively with
The breaker and monitoring device electrical connection；The breaker is provided with breaker, is provided on the electrically operated component
Handle, when the breaker is located at the first setting position, breaker conveys electric current to the power load, and the handle is directed toward the
One direction initialization；When the breaker is located at the second setting position, breaker stops conveying electric current to the power load, described
Handle is directed toward the second direction initialization；
The electrically operated component controls institute when specifically for receiving the power-off control instruction that the monitoring device is sent
Breaker is stated by first setting position to be changed to second setting position；
The handle position detection part, the directional information for detecting the handle, and the directional information is sent to institute
State monitoring device；
The monitoring device is additionally operable to after sending the power-off control instruction to the electrically operated component, according to the direction
Information determines whether the breaker is completed to power off.
2. electric leakage monitoring device according to claim 1, which is characterized in that the monitoring device further includes processor and electricity
Sub- converter, the electronic commutator are electrically connected with the processor and the zero sequence transformer respectively；
The zero sequence transformer, for when the power supply electric wire leaks electricity, induced current to be exported to the electronic commutator；
The electronic commutator, for the induced current to be converted to number by analog signal according to the setting time interval
Signal, and the digital signal is sent to the processor successively；
The processor, specifically in the difference for determining adjacent digital signal twice more than the setting electric current threshold value
When, send the power-off control instruction to the breaker device.
3. electric leakage monitoring device according to claim 1, which is characterized in that the monitoring device further include test circuit and
Processor, is provided with the first control switch and test current feedback circuit in the test circuit, the test current feedback circuit and
The processor electrical connection, one end of the test circuit are connect with the firewire of the power supply electric wire, the other end and power supply electric wire
Zero curve connection, one end that the test circuit connect with the firewire or the other end being connect with the zero curve are described in
The through-hole of zero sequence transformer setting, when the first control switch is closed, the test circuit, the firewire, the zero curve
The circuit closed formed with the power supply；
The test current feedback circuit, for after the first control switch is closed, under the control of the processor, generating
Gradual increased current value, and the difference of adjacent current value twice gradually increases；
The zero sequence transformer is specifically used in the circuit closed, exports the second induced electricity flow valuve；
The monitoring device is specifically used for based on the adjacent difference of second induced electricity flow valuve twice and the setting electric current threshold
Value sends power-off control instruction to the breaker device.
4. electric leakage monitoring device according to claim 1, which is characterized in that the monitoring device further include power-off instruction by
Button；
The monitoring device is additionally operable to when the difference for determining adjacent first induced electricity flow valuve twice is more than setting electric current threshold value,
The power-off instruction button is controlled to bounce.
5. electric leakage monitoring device according to claim 1, which is characterized in that the monitoring device is additionally provided with automatic protection
Functional select switch；
Automatic protection functions selecting switch, the state of a control for controlling the monitoring device；
The monitoring device is specifically used for being under enabling mode when the automatic protection functions selecting switch, adjacent determining
When the difference of the first induced electricity flow valuve is more than the setting electric current threshold value twice, sends power-off control to the breaker device and refer to
It enables.
6. electric leakage monitoring device according to claim 1, which is characterized in that the monitoring device further includes multiple first ginsengs
Number setting button and multiple second parameter set buttons, each first parameter set button correspond to different setting electric current threshold values,
Each second parameter set button corresponds to different setting time intervals, so that user is pressed by operating first parameter setting
Button selects the different setting electric current threshold values, and by operate second parameter set button select it is different described in set
It fixes time interval.
7. electric leakage monitoring device according to claim 6, which is characterized in that the monitoring device further includes communication interface；
The monitoring device is additionally operable to pass through the setting electric current threshold value and the first induced electricity flow valuve detected described
Communication interface is sent to background server；And receive new setting time interval that the background server is sent and new
When setting electric current threshold value, the setting time interval is adjusted according to the new setting time interval, and according to described new
Setting electric current threshold value described in setting electric current adjusting thresholds.
8. electric leakage monitoring device according to claim 1, which is characterized in that the monitoring device further includes display screen；
The monitoring device is additionally operable to show the first induced electricity flow valuve by the display screen, so as to the people that works
Member is checked.
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| CN201710707619.XA CN107276024B (en) | 2017-08-17 | 2017-08-17 | A kind of electric leakage monitoring device |
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|---|---|---|---|
| CN201710707619.XA CN107276024B (en) | 2017-08-17 | 2017-08-17 | A kind of electric leakage monitoring device |
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| CN107276024A CN107276024A (en) | 2017-10-20 |
| CN107276024B true CN107276024B (en) | 2018-08-10 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110380383A (en) * | 2019-08-30 | 2019-10-25 | 徐州超拓机电技术有限公司 | A kind of electric locomotive stringing electric leakage safe and intelligent protective device |
| CN113206984A (en) * | 2021-04-30 | 2021-08-03 | 国网河南省电力公司唐河县供电公司 | Electric shock prevention high-voltage monitoring equipment |
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| CN1744400A (en) * | 2004-09-02 | 2006-03-08 | 薛小平 | Intelligent leakage protector |
| CN101788602A (en) * | 2009-01-23 | 2010-07-28 | 三菱电机株式会社 | Earth leakage tester, earth leakage circuit breaker equipped with the same, circuit breaker, and insulation monitor |
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| CN107276024A (en) | 2017-10-20 |
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