CN106772184A - Ground fault simulation device and control method - Google Patents
Ground fault simulation device and control method Download PDFInfo
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- CN106772184A CN106772184A CN201710013939.5A CN201710013939A CN106772184A CN 106772184 A CN106772184 A CN 106772184A CN 201710013939 A CN201710013939 A CN 201710013939A CN 106772184 A CN106772184 A CN 106772184A
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- 238000004088 simulation Methods 0.000 title claims abstract description 89
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000002955 isolation Methods 0.000 claims abstract description 134
- 238000012360 testing method Methods 0.000 claims description 20
- 230000007704 transition Effects 0.000 claims description 10
- 230000001052 transient effect Effects 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims 1
- 230000000875 corresponding effect Effects 0.000 description 10
- 230000004888 barrier function Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 238000013024 troubleshooting Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000001010 compromised effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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Abstract
The embodiment of the invention provides a ground fault simulation device and a control method, relates to the technical field of electric power, and can simulate a wiring device to generate instantaneous single-phase ground fault and permanent single-phase ground fault on the premise of not influencing the normal work of a power distribution network so as to be convenient for detecting a line selection device in the power distribution network. The method comprises the following steps: the device comprises a ball gap, an isolation disconnecting link and a quick switch, wherein a ground fault simulation device is configured to be a first ground fault simulation mode and a second ground fault simulation mode, and when the time for conducting the head end of the isolation disconnecting link and the tail end of the isolation disconnecting link is longer than the input time interval, the head end of the isolation disconnecting link and the tail end of the isolation disconnecting link are disconnected. The invention is used for simulating the ground fault.
Description
Technical field
The present invention relates to technical field of electric power, more particularly to a kind of earth fault analogue means and control method.
Background technology
In power system, the neutral grounding mode of power distribution network security, reliability to a certain extent to power distribution network
Property and economy play extremely important influence, wherein especially to relay in the dielectric level of equipment, power distribution network in power distribution network
The shadow of the personal safety of the performance and power distribution network operating personnel of the reliability of the protection device communication system related to power distribution network
Sound is larger.
The primary ground mode of current power distribution network include through grounding through arc, through low resistance grounding, it is earth-free, through intelligence
Fault treating apparatus ground connection etc..In order that obtaining power distribution network the energy point of isolated fault in time after earth fault occurs, guarantee personal safety,
It is required to configure corresponding line selection apparatus in power distribution network when in power distribution network using above-mentioned earthing mode.Due to earthing mode class
Type is more, and the line selection apparatus that different earthing modes are configured in power distribution network there is also different, due to a portion choosing
Line apparatus reliability is relatively low, causes power distribution network when there is earth fault, and earthing or grounding means and line selection apparatus are directed to the earth fault
Accuracy of action it is relatively low, so as to lead to not carry out Fault Isolation or troubleshooting in time, reduce the safety of power distribution network
Property and reliability.
Under normal circumstances, in order to detect in power distribution network configure line selection apparatus reliability, can be in power distribution network
After line selection apparatus configuration is finished, repeatedly there is singlephase earth fault in triggering power distribution network, to detect that line selection apparatus occur in power distribution network
The accuracy of corresponding actions is carried out during singlephase earth fault for the singlephase earth fault.But on the one hand the above method cannot determine
Line selection apparatus when instantaneous singlephase earth fault occurs in power distribution network in power distribution network carry out phase for the instantaneous singlephase earth fault
Accuracy of action is answered, on the other hand needs triggering power distribution network to obtain testing result after repeatedly there is singlephase earth fault,
So as to improve the cost of fault simulation, the compatibility of fault simulation is reduced, compromise Consumer's Experience.
The content of the invention
The application provides a kind of earth fault analogue means and control method, can not influence power distribution network normal work
Under the premise of, there is instantaneous singlephase earth fault with permanent singlephase earth fault in order to the choosing in power distribution network in simulation connection device
Line apparatus are detected.
In a first aspect, The embodiment provides a kind of earth fault analogue means, including：Sphere gap, isolation knife
Lock, high-speed switch, the head end ground connection of sphere gap, the tail end of sphere gap are connected with the head end of isolation switch, the head end of high-speed switch
It is connected with the head end of sphere gap, the tail end of high-speed switch is connected with the head end of sphere gap, the tail end and earth fault of isolation switch
The test lead connection of analogue means；Earth fault analogue means is configured as the first earth fault simulation model with the second ground connection event
Barrier simulation model, the first earth fault simulation model is turned on for the head end of isolation switch with the tail end of isolation switch, high-speed switch
The tail end of head end and high-speed switch disconnect；Second earth fault simulation model is the head end of isolation switch and the tail of isolation switch
End conducting, the head end of high-speed switch is turned on the tail end of high-speed switch；When the head end of isolation switch is led with the tail end of isolation switch
When the logical time is spaced more than making time, the head end of isolation switch disconnects with the tail end of isolation switch.
Second aspect, The embodiment provides a kind of control method of earth fault analogue means, including：When connecing
When earth fault analogue means is configured as the first earth fault simulation model, the head end of isolation switch and the tail of isolation switch are controlled
End conducting, controls the head end of high-speed switch to be disconnected with the tail end of high-speed switch；When earth fault analogue means is configured as second
During earth fault simulation model, control the head end of isolation switch to be turned on the tail end of isolation switch, control the head end of high-speed switch
Tail end with high-speed switch is turned on；Between the time of the tail end conducting of the head end and isolation switch of isolation switch is more than making time
Every when, control the tail end of head end and the isolation switch of isolation switch to disconnect.
The embodiment provides a kind of earth fault analogue means and control method, including sphere gap, isolation knife
Lock, high-speed switch, can simulate the line selection apparatus being connected with the test lead of earth fault analogue means and occur instantaneity respectively and connect
Earth fault and permanent earth fault, and ensure instantaneity earth fault or permanent will not occur because of simulation line selection apparatus
Property earth fault and line selection apparatus is carried out zero-sequencedirectional protection action, therefore the earth fault mould that embodiments of the invention are provided
Intend device can on the premise of power distribution network normal work is not influenceed, simulation connection device occur instantaneous singlephase earth fault with forever
Long singlephase earth fault reduces the cost of fault simulation in order to be detected to the line selection apparatus in power distribution network, improves
The compatibility of fault simulation, improves Consumer's Experience.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, embodiment will be described below
Needed for the accompanying drawing to be used be briefly described, it should be apparent that, drawings in the following description are only more of the invention
Embodiment, for those of ordinary skill in the art, on the premise of not paying creative work, can also be attached according to these
Figure obtains other accompanying drawings.
A kind of schematic diagram of earth fault analogue means that Fig. 1 is provided by embodiments of the invention；
A kind of schematic diagram of earth fault analogue means that Fig. 2 is provided by another embodiment of the present invention；
A kind of schematic flow of the control method of earth fault analogue means that Fig. 3 is provided by embodiments of the invention
Figure；
A kind of control method of earth fault analogue means that Fig. 4 is provided by another embodiment of the present invention it is schematic
Flow chart.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
For the ease of clearly describing the technical scheme of the embodiment of the present invention, in an embodiment of the present invention, employ " the
One ", the printed words such as " second " make a distinction to function and the essentially identical identical entry of effect or similar item, and those skilled in the art can
To understand that the printed words such as " first ", " second " are not to be defined to quantity and execution order.
The primary ground mode of current power distribution network include through grounding through arc, through low resistance grounding, it is earth-free, through intelligence
Fault treating apparatus ground connection etc..In order that obtaining power distribution network the energy point of isolated fault in time after earth fault occurs, guarantee personal safety,
It is required to configure corresponding line selection apparatus in power distribution network when in power distribution network using above-mentioned earthing mode.Due to earthing mode class
Type is more, and the line selection apparatus that different earthing modes are configured in power distribution network there is also different, due to a portion choosing
Line apparatus reliability is relatively low, for example easily occur partial mutual inductance device there are problems that error-polarity connection, miss, it is noninductive, lead
Power distribution network is caused when there is earth fault, earthing or grounding means and line selection apparatus are relatively low for the accuracy of action of the earth fault,
So as to lead to not carry out Fault Isolation or troubleshooting in time, the safety and reliability of power distribution network is reduced.
Under normal circumstances, in order to detect in power distribution network configure line selection apparatus reliability, can be in power distribution network
After line selection apparatus configuration is finished, repeatedly there is singlephase earth fault in triggering power distribution network, to detect that line selection apparatus occur in power distribution network
The accuracy of corresponding actions is carried out during singlephase earth fault for the singlephase earth fault.But on the one hand the above method cannot determine
Line selection apparatus when instantaneous singlephase earth fault occurs in power distribution network in power distribution network carry out phase for the instantaneous singlephase earth fault
Accuracy of action is answered, on the other hand needs triggering power distribution network to obtain testing result after repeatedly there is singlephase earth fault,
So as to disturb the normal work of power distribution network, Consumer's Experience is compromised.
In order to solve the above problems, as shown in Figure 1, The embodiment provides a kind of earth fault analogue means
100, including：Sphere gap G1, isolation switch S1, high-speed switch S2, the head end ground connection GND of sphere gap G1, the tail end of sphere gap G1
Head end with isolation switch S1 is connected, and the head end of high-speed switch S2 is connected with the head end of sphere gap G1, the tail end of high-speed switch S2
Head end with sphere gap G1 is connected, and the tail end of isolation switch S1 is connected with the test lead 103 of earth fault analogue means 100.
Specifically, isolation switch S1 can be to include a switch, it is also possible to be to be formed by multiple switch serial or parallel connection.
High-speed switch S2 can be to include a switch, it is also possible to be to be formed by multiple switch serial or parallel connection.
Earth fault analogue means 100 is configured as the first earth fault simulation model and simulates mould with the second earth fault
Formula, the first earth fault simulation model is turned on for the head end of isolation switch S1 with the tail end of isolation switch S1, high-speed switch S2's
Head end disconnects with the tail end of high-speed switch S2；Second earth fault simulation model is the head end and isolation switch S1 of isolation switch S1
Tail end conducting, the head end of high-speed switch S2 turns on the tail end of high-speed switch S2.
When the time that the head end of isolation switch S1 is turned on the tail end of isolation switch S1 is spaced more than making time, isolation
The head end of disconnecting link S1 disconnects with the tail end of isolation switch S1.
Specifically, when earth fault analogue means 100 is configured as the first earth fault simulation model, due to isolation knife
The head end of lock S1 is turned on the tail end of isolation switch S1, and the head end of high-speed switch S2 disconnects with the tail end of high-speed switch S2, with survey
The line selection apparatus 104 of examination end 103 connection instantaneity can occur and connect by sphere gap G1 ground connection GND, i.e. simulation line selection apparatus 104
Earth fault, simultaneously because isolation switch S1 is more than in the time that the head end of isolation switch S1 is turned on the tail end of isolation switch S1 throwing
Disconnected when the angle of incidence is spaced, so that the time that instantaneity earth fault occur in line selection apparatus 104 is carried out less than line selection apparatus 104
The time threshold of zero-sequencedirectional protection action, that is, ensuring will not be because simulation line selection apparatus 104 instantaneity earth fault occur
Line selection apparatus 104 are made to carry out zero-sequencedirectional protection action, so as to ensure that instantaneity will not occur because of simulation line selection apparatus 104 connects
Earth fault and the normal work of line selection apparatus 104 is interfered.When earth fault analogue means 100 is configured as the second ground connection
During fault simulation pattern, because the tail end of head end and the isolation switch S1 of isolation switch S1 is turned on, the head end of high-speed switch S2 with
The tail end conducting of high-speed switch S2, the line selection apparatus 104 being connected with test lead 103 can be directly grounded GND, that is, simulate route selection dress
Put 104 and permanent earth fault occur, simultaneously because isolation switch S1 is in the head end of isolation switch S1 and the tail of isolation switch S1
The time of conducting is held to be disconnected when being spaced more than making time, so that the time of permanent earth fault occur in line selection apparatus 104
Less than the time threshold that line selection apparatus 104 carry out zero-sequencedirectional protection action, that is, ensure to go out because of simulation line selection apparatus 104
Existing permanent earth fault and line selection apparatus 104 is carried out zero-sequencedirectional protection action so that ensure will not be because of simulation route selection
There is instantaneity earth fault and the normal work of line selection apparatus 104 is interfered in device 104.
It should be noted that because line selection apparatus 104 are located in power distribution network, by the test of earth fault analogue means 100
When end 103 is connected with line selection apparatus 104, can be attached by powered access device, wherein powered access device can be
Insulating bar or other insulating tools, it is ensured that safely can connect earth fault analogue means 100 with line selection apparatus 104
Connect.
The embodiment provides a kind of earth fault analogue means, including sphere gap, isolation switch, quickly open
Close, can simulate the line selection apparatus being connected with the test lead of earth fault analogue means occur respectively instantaneity earth fault and
Permanent earth fault, and ensure instantaneity earth fault or permanent earth fault will not occur because of simulation line selection apparatus
And line selection apparatus is carried out zero-sequencedirectional protection action, therefore the earth fault analogue means that embodiments of the invention are provided can
On the premise of power distribution network normal work is not influenceed, there is instantaneous singlephase earth fault and permanent single-phase earthing in simulation connection device
Failure reduces the cost of fault simulation in order to be detected to the line selection apparatus in power distribution network, improves fault simulation
Compatibility, improves Consumer's Experience.
As shown in Figure 2, earth fault analogue means 100 can also include earth fault unit 102, earth fault unit
102 are located between the head end of sphere gap G1 and ground connection, and the head end of earth fault unit 102 is connected with the head end of sphere gap G1, connects
The tail end ground connection of earth fault unit 102.
Earth fault unit 102, for the tail that the head end of analogue ground trouble unit 102 passes through earth fault unit 102
End is grounded with earth fault pattern, and earth fault pattern is including metallic earthing pattern, through transition resistance eutral grounding pattern, through high resistant
Ground connection pattern, arc grounding pattern.
Specifically, in order that earth fault analogue means 100 can simulate further types of earth fault pattern, Ke Yi
Earth fault unit 102 is set between the head end and ground connection GND of sphere gap G1.
Exemplary, when the earth fault unit 102 is used for the head end of analogue ground trouble unit 102 by being grounded event
Hinder the tail end of unit 102 to be grounded with through transition resistance eutral grounding pattern, and the earth fault analogue means 100 is configured as first
During earth fault simulation model, the earth fault analogue means 100 can simulate the line selection apparatus being connected with test lead 103
104 there is instantaneity through transition resistance eutral grounding failure；When the earth fault unit 102 is used for analogue ground trouble unit 102
Head end be grounded with through high resistance grounding pattern by the tail end of earth fault unit 102, and the earth fault analogue means
100 when being configured as the first earth fault simulation model, and the earth fault analogue means 100 can be simulated and test lead 103
There is instantaneity through high resistance grounding failure in the line selection apparatus 104 of connection.
It should be noted that earth fault unit 102 can be existing earth fault equipment, as long as the earth fault sets
The standby earth fault that can be simulated is including metallic earthing failure, through transition resistance eutral grounding failure, through high resistance earthing fault, arc light
In earth fault any one.
Specifically, as shown in Figure 2, earth fault analogue means 100 also includes grounding switch S3, the head of grounding switch S3
End is connected with the head end of sphere gap G1, the tail end ground connection GND of grounding switch S3.
Specifically, grounding switch S3 can be to include a switch, it is also possible to be to be formed by multiple switch serial or parallel connection.
Head end of the first earth fault simulation model also including grounding switch S3 disconnects with the tail end of grounding switch S3, and second
Head end of the earth fault pattern also including grounding switch S3 disconnects with the tail end of grounding switch S3.
Earth fault analogue means 100 is additionally configured to the 3rd earth fault simulation model, the 3rd earth fault simulation mould
Formula is turned on for the head end of grounding switch S3 with the tail end of grounding switch S3.
Specifically, in order to ensure when earth fault analogue means 100 is not used, will not be because of maloperation isolation switch S1
Cause corresponding accident, can be configured to earth fault analogue means 100 when earth fault analogue means 100 is not used
3rd earth fault simulation model, even if the head end of grounding switch S3 is turned on the tail end of grounding switch S3, it is ensured that first switch
The head end ground connection GND of S1.And when using earth fault analogue means 100, i.e., earth fault analogue means 100 is configured as the
When one earth fault simulation model and the second earth fault simulation model, make the head end of grounding switch S3 and the tail of grounding switch S3
End disconnects, it is ensured that earth fault analogue means 100 can normally simulate line selection apparatus 104 and corresponding earth fault occurs.
Further, the tail end of head end and isolation switch S1 of the 3rd earth fault simulation model also including isolation switch S1
The tail end of disconnection, the head end of high-speed switch S2 and high-speed switch S2 disconnects, and further ensures that earth fault analogue means 100 will not
Generation misoperation fault.
Further, earth fault analogue means 100 also includes remote control unit 105, the control of remote control unit 105
End processed connects with the control end of isolation switch S1, the control end of high-speed switch S2 and the control end of grounding switch S3 respectively
Remote control unit 105, is configured as：
When transient fault simulation command is received, by the control end of isolation switch S1 by the head end of isolation switch S1 with
The tail end conducting of isolation switch S1, by the control end of high-speed switch S2 by the head end of high-speed switch S2 and the tail of high-speed switch S2
End is disconnected, is disconnected the tail end of the head end of grounding switch S3 and high-speed switch S2 by the control end of grounding switch S3.
When permanent fault simulation command is received, by the control end of isolation switch S1 by the head end of isolation switch S1 with
The tail end conducting of isolation switch S1, by the control end of high-speed switch S2 by the head end of high-speed switch S2 and the tail of high-speed switch S2
End is turned on, is disconnected the tail end of the head end of grounding switch S3 and high-speed switch S2 by the control end of grounding switch S3.
When idle commands are received, by the control end of isolation switch S1 by the head end of isolation switch S1 and isolation switch S1
Tail end disconnect, the tail end of the head end of high-speed switch S2 and high-speed switch S2 disconnected by the control end of high-speed switch S2, is led to
The control end for crossing grounding switch S3 turns on the tail end of the head end of grounding switch S3 and high-speed switch S2.
Specifically, by above-mentioned steps, the remote control of the earth fault analogue means 100 that can achieve a butt joint, wherein when connecing
When earth fault analogue means 100 receives transient fault simulation command, the line selection apparatus being connected with test lead 103 can be simulated
104 there is instantaneity earth fault；When earth fault analogue means 100 receives permanent fault simulation command, can simulate
There is permanent earth fault in the line selection apparatus 104 being connected with test lead 103；When earth fault analogue means 100 receives the free time
During order, it can be ensured that earth fault analogue means 100 will not cause it that corresponding accident occurs because of maloperation.
As shown in Figure 3, The embodiment provides a kind of control method of earth fault analogue means, including：
201st, the earth fault simulation model that earth fault analogue means is configured is determined.
When earth fault analogue means is configured as the first earth fault simulation model, step 202 is performed；When ground connection event
When barrier analogue means is configured as the second earth fault simulation model, step 203 is performed.
202nd, the tail end conducting of the head end of control isolation switch and isolation switch, controls the head end of high-speed switch and quickly opens
The tail end of pass disconnects.
203rd, the tail end conducting of the head end of control isolation switch and isolation switch, controls the head end of high-speed switch and quickly opens
The tail end conducting of pass.
204th, when being spaced more than making time the time of the tail end conducting of the head end and isolation switch of isolation switch, control
The head end of isolation switch disconnects with the tail end of isolation switch.
Specifically, when earth fault analogue means 100 is configured as the first earth fault simulation model, due to isolation knife
The head end of lock S1 is turned on the tail end of isolation switch S1, and the head end of high-speed switch S2 disconnects with the tail end of high-speed switch S2, with survey
The line selection apparatus 104 of examination end 103 connection instantaneity can occur and connect by sphere gap G1 ground connection GND, i.e. simulation line selection apparatus 104
Earth fault, simultaneously because isolation switch S1 is more than in the time that the head end of isolation switch S1 is turned on the tail end of isolation switch S1 throwing
Disconnected when the angle of incidence is spaced, so that the time that instantaneity earth fault occur in line selection apparatus 104 is carried out less than line selection apparatus 104
The time threshold of zero-sequencedirectional protection action, that is, ensuring will not be because simulation line selection apparatus 104 instantaneity earth fault occur
Line selection apparatus 104 are made to carry out zero-sequencedirectional protection action, so as to ensure that instantaneity will not occur because of simulation line selection apparatus 104 connects
Earth fault and the normal work of line selection apparatus 104 is interfered.When earth fault analogue means 100 is configured as the second ground connection
During fault simulation pattern, because the tail end of head end and the isolation switch S1 of isolation switch S1 is turned on, the head end of high-speed switch S2 with
The tail end conducting of high-speed switch S2, the line selection apparatus 104 being connected with test lead 103 can be directly grounded GND, that is, simulate route selection dress
Put 104 and permanent earth fault occur, simultaneously because isolation switch S1 is in the head end of isolation switch S1 and the tail of isolation switch S1
The time of conducting is held to be disconnected when being spaced more than making time, so that the time of permanent earth fault occur in line selection apparatus 104
Less than the time threshold that line selection apparatus 104 carry out zero-sequencedirectional protection action, that is, ensure to go out because of simulation line selection apparatus 104
Existing permanent earth fault and line selection apparatus 104 is carried out zero-sequencedirectional protection action so that ensure will not be because of simulation route selection
There is instantaneity earth fault and the normal work of line selection apparatus 104 is interfered in device 104.
It should be noted that because line selection apparatus 104 are located in power distribution network, by the test of earth fault analogue means 100
When end 103 is connected with line selection apparatus 104, can be attached by powered access device, wherein powered access device can be
Insulating bar or other insulating tools, it is ensured that safely can connect earth fault analogue means 100 with line selection apparatus 104
Connect.
The embodiment provides a kind of earth fault analogy method, can simulate and earth fault analogue means
There is instantaneity earth fault and permanent earth fault respectively in the line selection apparatus of test lead connection, and ensure will not be because of
There is instantaneity earth fault or permanent earth fault and line selection apparatus is carried out zero-sequencedirectional protection and move in simulation line selection apparatus
Make, therefore the earth fault analogy method that embodiments of the invention are provided can not influence the premise of power distribution network normal work
Under, there is instantaneous singlephase earth fault with permanent singlephase earth fault in order to be filled to the route selection in power distribution network in simulation connection device
Put and detected, reduce the cost of fault simulation, improve the compatibility of fault simulation, improve Consumer's Experience.
Specifically, as shown in Figure 4, the control method of the earth fault analogue means that embodiments of the invention are provided also is wrapped
Include：
205th, ground connection pattern is obtained, and controls the head end of earth fault unit simulation earth fault unit to pass through earth fault
The tail end of unit is grounded with earth fault pattern, and earth fault pattern is including metallic earthing pattern, through transition resistance eutral grounding mould
Formula, through high resistance ground pattern, arc grounding pattern.
Specifically, in order that earth fault analogue means 100 can simulate further types of earth fault pattern, Ke Yi
Earth fault unit 102 is set between the head end and ground connection GND of sphere gap G1.
Exemplary, when the earth fault unit 102 is used for the head end of analogue ground trouble unit 102 by being grounded event
Hinder the tail end of unit 102 to be grounded with through transition resistance eutral grounding pattern, and the earth fault analogue means 100 is configured as first
During earth fault simulation model, the earth fault analogue means 100 can simulate the line selection apparatus being connected with test lead 103
104 there is instantaneity through transition resistance eutral grounding failure；When the earth fault unit 102 is used for analogue ground trouble unit 102
Head end be grounded with through high resistance grounding pattern by the tail end of earth fault unit 102, and the earth fault analogue means
100 when being configured as the first earth fault simulation model, and the earth fault analogue means 100 can be simulated and test lead 103
There is instantaneity through high resistance grounding failure in the line selection apparatus 104 of connection.
It should be noted that earth fault unit 102 can be existing earth fault equipment, as long as the earth fault sets
The standby earth fault that can be simulated is including metallic earthing failure, through transition resistance eutral grounding failure, through high resistance earthing fault, arc light
In earth fault any one.
Specifically, as shown in Figure 4, the control method of the earth fault analogue means that embodiments of the invention are provided also is wrapped
Include：
206th, the head end of control grounding switch and the tail end of grounding switch disconnect.
207th, when earth fault analogue means is configured as the 3rd earth fault simulation model, the head of grounding switch is controlled
End turns on the tail end of grounding switch.
Specifically, in order to ensure when earth fault analogue means 100 is not used, will not be because of maloperation isolation switch S1
Cause corresponding accident, can be configured to earth fault analogue means 100 when earth fault analogue means 100 is not used
3rd earth fault simulation model, even if the head end of grounding switch S3 is turned on the tail end of grounding switch S3, it is ensured that first switch
The head end ground connection GND of S1.And when using earth fault analogue means 100, i.e., earth fault analogue means 100 is configured as the
When one earth fault simulation model and the second earth fault simulation model, make the head end of grounding switch S3 and the tail of grounding switch S3
End disconnects, it is ensured that earth fault analogue means 100 can normally simulate line selection apparatus 104 and corresponding earth fault occurs.
Further, the tail end of head end and isolation switch S1 of the 3rd earth fault simulation model also including isolation switch S1
The tail end of disconnection, the head end of high-speed switch S2 and high-speed switch S2 disconnects, and further ensures that earth fault analogue means 100 will not
Generation misoperation fault.
Specifically, as shown in Figure 4, the control method of the earth fault analogue means that embodiments of the invention are provided also is wrapped
Include：
208th, when remote control unit receives transient fault simulation command, control remote control unit passes through isolation knife
The control end of lock by the tail end conducting of the head end of isolation switch and isolation switch, by the control end of high-speed switch by high-speed switch
Head end and high-speed switch tail end disconnect, by the control end of grounding switch by the head end of grounding switch and the tail of high-speed switch
End disconnects.
209th, when remote control unit receives permanent fault simulation command, control remote control unit passes through isolation knife
The control end of lock by the tail end conducting of the head end of isolation switch and isolation switch, by the control end of high-speed switch by high-speed switch
Head end and high-speed switch tail end conducting, by the control end of grounding switch by the head end of grounding switch and the tail of high-speed switch
End disconnects.
210th, when remote control unit receives idle commands, control end of the remote control unit by isolation switch is controlled
The tail end of the head end of isolation switch and isolation switch is disconnected, by the control end of high-speed switch by the head end of high-speed switch with it is fast
The tail end of speed switch is disconnected, is turned on the tail end of the head end of grounding switch and high-speed switch by the control end of grounding switch.
Specifically, by above-mentioned steps, the remote control of the earth fault analogue means 100 that can achieve a butt joint, wherein when connecing
When earth fault analogue means 100 receives transient fault simulation command, the line selection apparatus being connected with test lead 103 can be simulated
104 there is instantaneity earth fault；When earth fault analogue means 100 receives permanent fault simulation command, can simulate
There is permanent earth fault in the line selection apparatus 104 being connected with test lead 103；When earth fault analogue means 100 receives the free time
During order, it can be ensured that earth fault analogue means 100 will not cause it that corresponding accident occurs because of maloperation.
The above, specific embodiment only of the invention, but protection scope of the present invention is not limited thereto, and it is any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all contain
Cover within protection scope of the present invention.Therefore, protection scope of the present invention described should be defined by scope of the claims.
Claims (10)
1. a kind of earth fault analogue means, it is characterised in that including：Between sphere gap, isolation switch, high-speed switch, the ball
The head end ground connection of gap, the tail end of the sphere gap is connected with the head end of the isolation switch, the head end of the high-speed switch and institute
The head end connection of sphere gap is stated, the tail end of the high-speed switch is connected with the head end of the sphere gap, the tail of the isolation switch
End is connected with the test lead of the earth fault analogue means；
The earth fault analogue means is configured as the first earth fault simulation model and the second earth fault simulation model, institute
The head end that the first earth fault simulation model is the isolation switch is stated to be turned on the tail end of the isolation switch, it is described quickly to open
The head end of pass disconnects with the tail end of the high-speed switch；The second earth fault simulation model is the head end of the isolation switch
Tail end with the isolation switch is turned on, and the head end of the high-speed switch is turned on the tail end of the high-speed switch；
It is described when the time that the head end of the isolation switch is turned on the tail end of the isolation switch is spaced more than making time
The head end of isolation switch disconnects with the tail end of the isolation switch.
2. earth fault analogue means according to claim 1, it is characterised in that the earth fault analogue means is also wrapped
Earth fault unit is included, the earth fault unit is located between the head end of the sphere gap and ground connection, the earth fault list
The head end of unit is connected with the head end of the sphere gap, the tail end ground connection of the earth fault unit；
The earth fault unit, for simulating the head end of the earth fault unit by the tail end of the earth fault unit
It is grounded with earth fault pattern, the earth fault pattern is including metallic earthing pattern, through transition resistance eutral grounding pattern, through height
Resistance ground connection pattern, arc grounding pattern.
3. earth fault analogue means according to claim 1, it is characterised in that the earth fault analogue means is also wrapped
Grounding switch is included, the head end of the grounding switch is connected with the head end of the sphere gap, the tail end ground connection of the grounding switch；
Head end of the first earth fault simulation model also including the grounding switch disconnects with the tail end of the grounding switch,
Head end of the second earth fault pattern also including the grounding switch disconnects with the tail end of the grounding switch；
The earth fault analogue means is additionally configured to the 3rd earth fault simulation model, and the 3rd earth fault simulates mould
Formula is that the head end of the grounding switch is turned on the tail end of the grounding switch.
4. earth fault analogue means according to claim 3, it is characterised in that the 3rd earth fault simulation model
Head end also including the isolation switch disconnects with the tail end of the isolation switch, the head end of the high-speed switch is quick with described
The tail end of switch disconnects.
5. the earth fault analogue means according to claim 3 or 4, it is characterised in that the earth fault analogue means
Also include remote control unit, the control end of the remote control unit respectively with the control end of the isolation switch, it is described fast
The control end connection of the control end and the grounding switch of speed switch；
The remote control unit, is configured as：
When transient fault simulation command is received, by the control end of the isolation switch by the head end of the isolation switch with
It is the tail end conducting of the isolation switch, by the control end of the high-speed switch that the head end of the high-speed switch is quick with described
The tail end of switch disconnects, by the control end of the grounding switch by the tail of the head end of the grounding switch and the high-speed switch
End disconnects；
When permanent fault simulation command is received, by the control end of the isolation switch by the head end of the isolation switch with
It is the tail end conducting of the isolation switch, by the control end of the high-speed switch that the head end of the high-speed switch is quick with described
The tail end conducting of switch, by the control end of the grounding switch by the tail of the head end of the grounding switch and the high-speed switch
End disconnects；
When idle commands are received, by the control end of the isolation switch by the head end of the isolation switch and the isolation knife
The tail end of lock disconnects, by the control end of the high-speed switch by the tail end of the head end of the high-speed switch and the high-speed switch
Disconnect, the head end of the grounding switch is turned on the tail end of the high-speed switch by the control end of the grounding switch.
6. a kind of control method of earth fault analogue means, it is characterised in that including：
When the earth fault analogue means is configured as the first earth fault simulation model, control isolation switch head end with
The tail end conducting of the isolation switch, controls the head end of high-speed switch to be disconnected with the tail end of the high-speed switch；
When the earth fault analogue means is configured as the second earth fault simulation model, the head of the isolation switch is controlled
Hold and turned on the tail end of the isolation switch, control the head end of the high-speed switch to be turned on the tail end of the high-speed switch；
When the time that the head end of the isolation switch is turned on the tail end of the isolation switch is spaced more than making time, control
The head end of the isolation switch disconnects with the tail end of the isolation switch.
7. the control method of earth fault analogue means according to claim 6, it is characterised in that methods described is also wrapped
Include：
Ground connection pattern is obtained, and controls the head end of earth fault unit described in earth fault unit simulation by the earth fault
The tail end of unit is grounded with the earth fault pattern, and the earth fault pattern is including metallic earthing pattern, through transition electricity
Resistance ground connection pattern, through high resistance ground pattern, arc grounding pattern.
8. the control method of earth fault analogue means according to claim 6, it is characterised in that methods described is also wrapped
Include：
When the earth fault analogue means is configured as the first earth fault simulation model, control grounding switch head end with
The tail end of the grounding switch disconnects；
When the earth fault analogue means is configured as the second earth fault simulation model, control grounding switch head end with
The tail end of the grounding switch disconnects；
When the earth fault analogue means is configured as the 3rd earth fault simulation model, the head of the grounding switch is controlled
Hold and turned on the tail end of the grounding switch.
9. the control method of earth fault analogue means according to claim 8, it is characterised in that methods described is also wrapped
Include：
When the earth fault analogue means is configured as the 3rd earth fault simulation model, the head of the isolation switch is controlled
Hold and disconnected with the tail end of the isolation switch, control the head end of the high-speed switch to be disconnected with the tail end of the high-speed switch.
10. the control method of earth fault analogue means according to claim 8 or claim 9, it is characterised in that methods described is also
Including：
When remote control unit receives transient fault simulation command, the remote control unit is controlled by the isolation knife
The control end of lock is by the tail end conducting of the head end of the isolation switch and the isolation switch, by the control of the high-speed switch
Hold and the tail end of the head end of the high-speed switch and the high-speed switch is disconnected, incites somebody to action described by the control end of the grounding switch
The head end of grounding switch disconnects with the tail end of the high-speed switch；
When the remote control unit receives permanent fault simulation command, control the remote control unit by it is described every
Control end from disconnecting link is by the tail end conducting of the head end of the isolation switch and the isolation switch, by the high-speed switch
Control end is incited somebody to action by the tail end conducting of the head end of the high-speed switch and the high-speed switch, by the control end of the grounding switch
The head end of the grounding switch disconnects with the tail end of the high-speed switch；
When the remote control unit receives idle commands, the control for controlling the remote control unit to pass through the isolation switch
End processed disconnects the tail end of the head end of the isolation switch and the isolation switch, by the control end of the high-speed switch by institute
The tail end of the head end and the high-speed switch of stating high-speed switch disconnects, by the control end of the grounding switch by the earthing
The head end of lock is turned on the tail end of the high-speed switch.
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