CN106970267B - Measurement method, controller and the control system of conductor insulation against ground resistance - Google Patents
Measurement method, controller and the control system of conductor insulation against ground resistance Download PDFInfo
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- CN106970267B CN106970267B CN201710161350.XA CN201710161350A CN106970267B CN 106970267 B CN106970267 B CN 106970267B CN 201710161350 A CN201710161350 A CN 201710161350A CN 106970267 B CN106970267 B CN 106970267B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/20—Measuring earth resistance; Measuring contact resistance, e.g. of earth connections, e.g. plates
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/08—Measuring resistance by measuring both voltage and current
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Abstract
This disclosure relates to a kind of measurement method, controller and the control system of conductor insulation against ground resistance.Method includes: to obtain the first electric current that test resistance is flowed through when first lead-out terminal connects the second end ground connection of conductor and test resistance；Obtain secondary side output open circuit voltage, the second electric current for flowing through test resistance when first lead-out terminal is docked with the second end of test resistance and the first voltage when first lead-out terminal is docked with the second end of test resistance between first lead-out terminal and the second end of test resistance of transformer；According to secondary side output open circuit voltage, the first electric current, first voltage and the second electric current, the insulation against ground resistance of conductor is determined.The insulation against ground resistance of conductor can be quickly and accurately known as a result,.Also, the measuring circuit of conductor insulation against ground resistance is simple, each component costs are low, and measurement accuracy is high.Further, it is also possible to which the ratio of defects of glass substrate manufacturing process is effectively reduced, and then promote the yields and product quality of product.
Description
Technical field
This disclosure relates to electronic technology field, and in particular, to a kind of measurement method of conductor insulation against ground resistance, control
Device and control system.
Background technique
It is molten in platinum channel when the insulation effect of platinum channel over the ground is bad in the manufacturing process of glass substrate
The ionic state for melting glass metal can change, in this way, it is easy to appear defects for glass substrate.Therefore, it quickly and accurately detects
The insulation against ground resistance of platinum ontology has important influence for the control of the defects of glass substrate manufacturing process rate.
Summary of the invention
The purpose of the disclosure is in the prior art due to can not quickly and accurately detect the exhausted over the ground of platinum ontology
The problem of edge resistance is without can be effectively controlled the defects of glass substrate manufacturing process rate provides a kind of conductor insulation against ground resistance
Measurement method, controller and control system.
To achieve the goals above, the disclosure provides a kind of measurement method of conductor insulation against ground resistance, leads for described
The measuring circuit of body insulation against ground resistance includes: transformer and test resistance, wherein a side terminal of the transformer is used for
Power supply is connected, for the secondary side first lead-out terminal of the transformer for connecting conductor, the secondary side second of the transformer is defeated
Terminal is connected with the first end of the test resistance out, the second end of the test resistance for be grounded or with it is described first defeated
Terminal docks out, which comprises
It obtains when the first lead-out terminal connects the second end ground connection of the conductor and the test resistance
Flow through the first electric current of the test resistance；
Obtain the secondary side output open circuit voltage of the transformer, in the first lead-out terminal and the test resistance
The second end flows through the second electric current of the test resistance and in the first lead-out terminal and the test electricity when docking
The first voltage when second end docking of resistance between the first lead-out terminal and the second end of the test resistance；
According to the secondary side output open circuit voltage, first electric current, the first voltage and second electric current, really
The insulation against ground resistance of the fixed conductor.
Optionally, the conductor is platinum ontology.
Optionally, the acquisition connects described in the conductor and the test resistance in the first lead-out terminal
Second end flows through the first electric current of the test resistance when being grounded, comprising:
It is obtained by the first testing current table being arranged between the second end of the test resistance and ground described
First electric current.
Optionally, the secondary side output open circuit voltage for obtaining the transformer, in the first lead-out terminal and institute
The second electric current of the test resistance is flowed through and in the first lead-out terminal when stating the second end docking of test resistance
When being docked with the second end of the test resistance second end of the first lead-out terminal and the test resistance it
Between first voltage, include at least one of the following:
It is obtained by the first voltage test table being arranged between the first lead-out terminal and second output terminal
Take the secondary side output open circuit voltage of the transformer；
It is surveyed by the second electric current being arranged between the second end of the test resistance and the first lead-out terminal
It takes temperature to obtain second electric current；
It is surveyed by the second voltage being arranged between the second end of the test resistance and the first lead-out terminal
It takes temperature to obtain the first voltage.
Optionally, described according to the secondary side output open circuit voltage, first electric current, the first voltage and described
Second electric current determines the insulation against ground resistance of the conductor, comprising:
The insulation against ground resistance of the conductor is determined by following formula:
Wherein, R indicates the insulation against ground resistance of the conductor；U2Indicate the secondary side output open circuit voltage；A1Indicate institute
State the first electric current；V1Indicate the first voltage；A2Indicate second electric current.
Optionally, the method also includes:
Export the insulation against ground resistance of the conductor.
The disclosure also provides a kind of for measuring the controller of conductor insulation against ground resistance, is used for the conductor insulation against ground
The measuring circuit of resistance includes: transformer and test resistance, wherein and a side terminal of the transformer is used to connect power supply,
The secondary side first lead-out terminal of the transformer is for connecting conductor, secondary side second output terminal of the transformer and institute
The first end for stating test resistance is connected, the second end of the test resistance for be grounded or with the first lead-out terminal pair
It connects, the controller includes:
First obtains module, connects the conductor and the test resistance in the first lead-out terminal for obtaining
The second end ground connection when flow through the first electric current of the test resistance；
Second obtains module, for obtaining the secondary side output open circuit voltage of the transformer, in first output end
Sub the second electric current of the test resistance and defeated described first of flowing through when being docked with the second end of the test resistance
Described the of the first lead-out terminal and test resistance when terminal is docked with the second end of the test resistance out
First voltage between two ends；
Determining module, first electric current, the second acquisition mould for being got according to the first acquisition module
The secondary side output open circuit voltage, the first voltage and second electric current that block is got, determine pair of the conductor
Ground insulation resistance.
Optionally, the conductor is platinum ontology.
Optionally, the first acquisition module is used for by being arranged between the second end of the test resistance and ground
The first testing current table obtain first electric current.
Optionally, the second acquisition module includes at least one of the following:
Secondary side output open circuit voltage acquisition submodule, for by being arranged in the first lead-out terminal and described second
First voltage test table between output terminal obtains the secondary side output open circuit voltage of the transformer；
Second electric current acquisition submodule, for the second end by the way that the test resistance is arranged in and described first defeated
The second testing current table between terminal obtains second electric current out；
First voltage acquisition submodule, for the second end by the way that the test resistance is arranged in and described first defeated
Second voltage test table between terminal obtains the first voltage out.
Optionally, the determining module is used to determine the insulation against ground resistance of the conductor by following formula:
Wherein, R indicates the insulation against ground resistance of the conductor；U2Indicate the secondary side output open circuit voltage；A1Indicate institute
State the first electric current；V1Indicate the first voltage；A2Indicate second electric current.
Optionally, the controller further include:
Output module, for exporting the insulation against ground resistance of the conductor.
The disclosure also provides a kind of for measuring the control system of conductor insulation against ground resistance, and the control system includes:
Measuring circuit for the conductor insulation against ground resistance, comprising: transformer and test resistance, wherein the change
For side terminal of depressor for connecting power supply, the secondary side first lead-out terminal of the transformer is described for connecting conductor
Secondary side second output terminal of transformer is connected with the first end of the test resistance, and the second end of the test resistance is used
It is docked in ground connection or with the first lead-out terminal；
The controller for being used to measure conductor insulation against ground resistance that the disclosure provides.
Optionally, the system also includes it is following at least one:
First testing current table connect with the first acquisition module, the second end of the test resistance is arranged in
Between ground, the second end of the conductor and the test resistance is connected in the first lead-out terminal for detecting
The first electric current of the test resistance is flowed through when ground connection, and first electric current is sent to described first and obtains module；
First voltage tests table, connect with the second acquisition module, setting is in the first lead-out terminal and described the
Between two output terminals, sent for detecting the secondary side output open circuit voltage, and by the secondary side output open circuit voltage
Module is obtained to described second；
Second testing current table connect with the second acquisition module, the second end of the test resistance is arranged in
Between the first lead-out terminal, for detecting the second end pair in the first lead-out terminal and the test resistance
The second electric current of the test resistance is flowed through when connecing, and second electric current is sent to described second and obtains module；
Second voltage tests table, connect with the second acquisition module, the second end of the test resistance is arranged in
Between the first lead-out terminal, for detecting the second end pair in the first lead-out terminal and the test resistance
First voltage when connecing between the first lead-out terminal and the second end of the test resistance, and by the first voltage
It is sent to described second and obtains module.
The technical scheme provided by this disclosed embodiment can include the following benefits: by obtaining the first electric current, two
Secondary side output open circuit voltage, the second electric current and first voltage, can quickly and accurately know the insulation against ground resistance of conductor.
Also, the measuring circuit of conductor insulation against ground resistance is simple, each component costs are low, and measurement accuracy is high.Further, it is also possible to have
Effect reduces the ratio of defects of glass substrate manufacturing process, and then promotes the yields and product quality of product.
Other feature and advantage of the disclosure will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
Attached drawing is and to constitute part of specification for providing further understanding of the disclosure, with following tool
Body embodiment is used to explain the disclosure together, but does not constitute the limitation to the disclosure.In the accompanying drawings:
Figure 1A to Fig. 1 D is a kind of measurement electricity for conductor insulation against ground resistance shown according to an exemplary embodiment
The structural schematic diagram on road.
Fig. 2A is a kind of flow chart of the measurement method of conductor insulation against ground resistance shown according to an exemplary embodiment.
Fig. 2 B is a kind of process of the measurement method of the conductor insulation against ground resistance shown according to another exemplary embodiment
Figure.
Fig. 3 A to Fig. 3 D is a kind of measuring circuit of the conductor insulation against ground resistance shown according to another exemplary embodiment
Structural schematic diagram.
Fig. 4 A is shown according to an exemplary embodiment a kind of for measuring the controller of conductor insulation against ground resistance
Structural schematic diagram.
Fig. 4 B be show according to another exemplary embodiment it is a kind of for measuring the controller of conductor insulation against ground resistance
Structural schematic diagram.
Fig. 5 is shown according to an exemplary embodiment a kind of for measuring the control system of conductor insulation against ground resistance
Part-structure block diagram.
Specific embodiment
It is described in detail below in conjunction with specific embodiment of the attached drawing to the disclosure.It should be understood that this place is retouched
The specific embodiment stated is only used for describing and explaining the disclosure, is not limited to the disclosure.
Figure 1A is a kind of knot of measuring circuit for conductor insulation against ground resistance shown according to an exemplary embodiment
Structure schematic diagram.As shown in Figure 1A, the measuring circuit for conductor insulation against ground resistance may include: transformer 10 and test resistance
20。
In the disclosure, a side terminal of the transformer 10 can be used for connecting power supply, that is to say, that the transformer 10
Primary side first input end 101 and the second input terminal of primary side 102 can be used for connecting power supply, wherein the transformer
10 can be, for example, AC transformer, and the voltage range of the power supply can be, for example, 220VAC~380VAC.In addition, test resistance
20 Standard resistance range can be, for example, the Ω of 100 Ω~360.Secondary side second output terminal 104 and test resistance of transformer 10
20 first end 201 is connected.As shown in Figure 1B, the secondary side first lead-out terminal 103 of transformer 10 can be used for connecting and lead
Body 30, wherein conductor 30 can directly be contacted with ground.
In one embodiment, as shown in Figure 1 C, the second end 202 of test resistance 20 can be used for being grounded.
In another embodiment, as shown in figure iD, the second end 202 of test resistance 20 can be used for it is first defeated
Terminal 103 docks out.
Fig. 2 is a kind of flow chart of the measurement method of conductor insulation against ground resistance shown according to an exemplary embodiment.
As shown in Fig. 2, this method may comprise steps of.
In step 201, it obtains and is flowed through when first lead-out terminal connects the second end ground connection of conductor and test resistance
First electric current of test resistance.
In the disclosure, which can be, for example, platinum ontology.But should be not limited to this, conductor 30 can also be with
For electrode block or the conductor of other materials.
It in one embodiment, as shown in Figure 3A, can be by the way that the second end 202 and ground of test resistance 20 be arranged in
Between the first testing current table 40 obtain the first electric current.The first testing current table 40 can be ammeter, be also possible to set
In the multimeter of electric current gear.
In step 202, the secondary side output open circuit voltage of transformer is obtained, in first lead-out terminal and test resistance
Second end flows through the second electric current of test resistance and when first lead-out terminal is docked with the second end of test resistance when docking
First voltage between first lead-out terminal and the second end of test resistance.
It in one embodiment, as shown in Figure 3B, can be by being arranged in first lead-out terminal 103 and second output terminal
First voltage test table 50 between son 104 obtains the secondary side output open circuit voltage of transformer 10, wherein the secondary side is defeated
The range of open-circuit voltage can be, for example, 5VAC~36VAC out.The first voltage test table 50 can be voltmeter, be also possible to
It is placed in the multimeter of voltage gear.
It in one embodiment, as shown in Figure 3 C, can be by the way that the second end 202 and first of test resistance 20 be arranged in
The second testing current table 60 between output terminal 103 obtains the second electric current.The second testing current table 50 can be electric current
Table is also possible to be placed in the multimeter of electric current gear.
It in one embodiment, as shown in Figure 3D, can be by the way that the second end 202 and first of test resistance 20 be arranged in
Second voltage test table 70 between output terminal 103 obtains first voltage.The second voltage test table 70 can be voltage
Table is also possible to be placed in the multimeter of voltage gear.
In addition, it should be noted that, above-mentioned steps 202 can be performed simultaneously with above-mentioned steps 201, it can also be in step
Execute before 201, can also be after the above-mentioned steps 201 before, be not specifically limited herein.
In step 203, according to secondary side output open circuit voltage, the first electric current, first voltage and the second electric current, determination is led
The insulation against ground resistance of body.
Illustratively, the insulation against ground resistance of the conductor 30 can be determined by following equation (1):
Wherein, R indicates the insulation against ground resistance of the conductor 30；U2Indicate the secondary side output open circuit voltage；A1It indicates
First electric current；V1Indicate the first voltage；A2Indicate second electric current.
The technical scheme provided by this disclosed embodiment can include the following benefits: by obtaining the first electric current, two
Secondary side output open circuit voltage, the second electric current and first voltage, can quickly and accurately know the insulation against ground resistance of conductor.
Also, the measuring circuit of conductor insulation against ground resistance is simple, each component costs are low, and measurement accuracy is high.Further, it is also possible to have
Effect reduces the ratio of defects of glass substrate manufacturing process, and then promotes the yields and product quality of product.
Fig. 2 B is a kind of process of the measurement method of the conductor insulation against ground resistance shown according to another exemplary embodiment
Figure.As described in Figure 2 B, the above method can also include the following steps.
In step 204, the insulation against ground resistance of output conductor.
In the disclosure, which can be output in display screen, user is facilitated to check.
Fig. 4 A is shown according to an exemplary embodiment a kind of for measuring the controller of conductor insulation against ground resistance
Structural schematic diagram.Referring to Fig. 4 A, the controller 80 may include:
First obtains module 401, connects the conductor 30 and described in the first lead-out terminal 103 for obtaining
The second end 202 of test resistance 20 flows through the first electric current of the test resistance 20 when being grounded；Second obtains module 402,
For obtaining the secondary side output open circuit voltage of the transformer 10, in the first lead-out terminal 103 and the test resistance
20 second end 202 flows through the second electric current of the test resistance 20 and in the first lead-out terminal 103 when docking
The institute of the first lead-out terminal 103 and the test resistance 20 when being docked with the second end 202 of the test resistance 20
State the first voltage between second end 202；Determining module 403, for according to it is described first acquisition module 401 get described in
The secondary side output open circuit voltage that first electric current, the second acquisition module 402 are got, the first voltage and described
Second electric current determines the insulation against ground resistance of the conductor 30.
Optionally, the conductor 30 is platinum ontology.
Optionally, the first acquisition module 401 is used for the second end 202 by the way that the test resistance 20 is arranged in
The first testing current table 40 between ground obtains first electric current.
Optionally, the second acquisition module 402 may include at least one of following: secondary side output open circuit voltage obtains
Submodule is surveyed for the first voltage by being arranged between the first lead-out terminal 103 and second output terminal 104
It takes temperature and 50 obtains the secondary side output open circuit voltage of the transformer 10；Second electric current acquisition submodule, for passing through setting
The second testing current table 60 between the second end 202 and the first lead-out terminal 103 of the test resistance 20
Obtain second electric current；First voltage acquisition submodule, for the second end by the way that the test resistance 20 is arranged in
Second voltage test table 70 between 202 and the first lead-out terminal 103 obtains the first voltage.
Optionally, the determining module 403 can determine the insulation against ground electricity of the conductor 30 by above equation (1)
Resistance.
Fig. 4 B be show according to another exemplary embodiment it is a kind of for measuring the controller of conductor insulation against ground resistance
Structural schematic diagram.Referring to Fig. 4 B, above controller 80 can also include: output module 404, for exporting the conductor 30
Insulation against ground resistance.
The disclosure also provides a kind of for measuring the control system of conductor insulation against ground resistance, which may include: use
In the measuring circuit 90 of conductor insulation against ground resistance, comprising: transformer 10 and test resistance 20, wherein the transformer 10
For side terminal for connecting power supply, the secondary side first lead-out terminal 103 of the transformer 10 is described for connecting conductor 30
Secondary side second output terminal 104 of transformer 10 is connected with the first end 201 of the test resistance 20, the test resistance
20 second end 202 is for being grounded or docking with the first lead-out terminal 103；What the disclosure provided is used to measure conductor over the ground
The controller 80 of insulation resistance.
Fig. 5 is shown according to an exemplary embodiment a kind of for measuring the control system of conductor insulation against ground resistance
Part-structure block diagram.As shown in figure 5, the system can also include it is following at least one: the first testing current table 40, with described the
One, which obtains module 401, connects, and is arranged between the second end 202 and ground of the test resistance 20, for detecting described
The second end 202 that first lead-out terminal 103 connects the conductor 30 and the test resistance 20 flows through described when being grounded
First electric current of test resistance 20, and first electric current is sent to described first and obtains module 401；First voltage tests table
50, connect with the second acquisition module 402, setting the first lead-out terminal 103 and the second output terminal sub 104 it
Between, for detecting the secondary side output open circuit voltage, and the secondary side output open circuit voltage is sent to described second and is obtained
Modulus block 402；Second testing current table 60 connect with the second acquisition module 402, the institute of the test resistance 20 is arranged in
It states between second end 202 and the first lead-out terminal 103, for detecting in the first lead-out terminal 103 and the test
The second end 202 of resistance 20 flows through the second electric current of the test resistance 20 when docking, and second electric current is sent
Module 402 is obtained to described second；Second voltage tests table 70, connect, is arranged in the survey with the second acquisition module 402
Between the second end 202 and the first lead-out terminal 103 for trying resistance 20, for detecting in the first lead-out terminal
103 first lead-out terminals 103 when being docked with the second end 202 of the test resistance 20 and the test resistance 20
First voltage between the second end 202, and the first voltage is sent to described second and obtains module 402.
The preferred embodiment of the disclosure is described in detail in conjunction with attached drawing above, still, the disclosure is not limited to above-mentioned reality
The detail in mode is applied, in the range of the technology design of the disclosure, a variety of letters can be carried out to the technical solution of the disclosure
Monotropic type, these simple variants belong to the protection scope of the disclosure.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case where shield, it can be combined in any appropriate way.In order to avoid unnecessary repetition, the disclosure to it is various can
No further explanation will be given for the combination of energy.
In addition, any combination can also be carried out between a variety of different embodiments of the disclosure, as long as it is without prejudice to originally
Disclosed thought equally should be considered as disclosure disclosure of that.
Claims (14)
1. a kind of measurement method of conductor insulation against ground resistance, which is characterized in that the survey for the conductor insulation against ground resistance
Measuring circuit includes: transformer (10) and test resistance (20), wherein a side terminal of the transformer (10) is for connecting electricity
Source, the secondary side first lead-out terminal (103) of the transformer (10) is for connecting conductor (30), and the two of the transformer (10)
Secondary side second output terminal sub (104) is connected with the first end (201) of the test resistance (20), the test resistance (20)
For being grounded or docking with the first lead-out terminal (103), the conductor (30) directly contacts second end (202) with ground,
The described method includes:
It obtains and connects described the of described conductor (30) and the test resistance (20) in the first lead-out terminal (103)
Two ends (202) flow through the first electric current of the test resistance (20) when being grounded；
Obtain the secondary side output open circuit voltage of the transformer (10), in the first lead-out terminal (103) and the test
The second electric current of the test resistance (20) is flowed through and described first when the second end (202) docking of resistance (20)
Output terminal (103) when being docked with the second end (202) of the test resistance (20) first lead-out terminal (103) with
First voltage between the second end (202) of the test resistance (20)；
According to the secondary side output open circuit voltage, first electric current, the first voltage and second electric current, institute is determined
State the insulation against ground resistance of conductor (30).
2. the method according to claim 1, wherein the conductor (30) is platinum ontology.
3. the method according to claim 1, wherein described obtain connects in the first lead-out terminal (103)
The second end (202) of the conductor (30) and the test resistance (20) flows through the test resistance (20) when being grounded
The first electric current, comprising:
By be arranged the first testing current table (40) between the second end (202) and ground of the test resistance (20) come
Obtain first electric current.
4. the method according to claim 1, wherein the secondary side output for obtaining the transformer (10) is opened
Road voltage flows through institute when the first lead-out terminal (103) is docked with the second end (202) of the test resistance (20)
State the second electric current of test resistance (20) and in the described of the first lead-out terminal (103) and the test resistance (20)
When second end (202) is docked between the first lead-out terminal (103) and the second end (202) of the test resistance (20)
First voltage, include at least one of the following:
It is tested by the first voltage being arranged between the first lead-out terminal (103) and the second output terminal sub (104)
Table (50) obtains the secondary side output open circuit voltage of the transformer (10)；
By being arranged between the second end (202) and the first lead-out terminal (103) of the test resistance (20)
The second testing current table (60) obtains second electric current；
By being arranged between the second end (202) and the first lead-out terminal (103) of the test resistance (20)
Second voltage tests table (70) to obtain the first voltage.
5. method according to any of claims 1-4, which is characterized in that described according to the secondary side output open circuit
Voltage, first electric current, the first voltage and second electric current, determine the insulation against ground resistance of the conductor (30),
Include:
The insulation against ground resistance of the conductor (30) is determined by following formula:
Wherein, R indicates the insulation against ground resistance of the conductor (30)；U2Indicate the secondary side output open circuit voltage；A1Indicate institute
State the first electric current；V1Indicate the first voltage；A2Indicate second electric current.
6. method according to any of claims 1-4, which is characterized in that the method also includes:
Export the insulation against ground resistance of the conductor (30).
7. a kind of for measuring the controller of conductor insulation against ground resistance, which is characterized in that for the conductor insulation against ground electricity
The measuring circuit of resistance includes: transformer (10) and test resistance (20), wherein a side terminal of the transformer (10) is used for
Power supply is connected, the secondary side first lead-out terminal (103) of the transformer (10) is for connecting conductor (30), the transformer
(10) secondary side second output terminal sub (104) is connected with the first end (201) of the test resistance (20), the test electricity
For the second end (202) of resistance (20) for being grounded or docking with the first lead-out terminal (103), the conductor (30) and ground are straight
Contact, the controller include:
First obtains module, connects the conductor (30) and the test in the first lead-out terminal (103) for obtaining
The first electric current of the test resistance (20) is flowed through when the second end (202) ground connection of resistance (20)；
Second obtains module, for obtaining the secondary side output open circuit voltage of the transformer (10), in first output end
Sub (103) flow through the second electricity of the test resistance (20) when docking with the second end (202) of the test resistance (20)
Stream and when the first lead-out terminal (103) is docked with the second end (202) of the test resistance (20) described in the
First voltage between one output terminal (103) and the second end (202) of the test resistance (20)；
Determining module, first electric current, the second acquisition module for being got according to the first acquisition module obtain
The secondary side output open circuit voltage, the first voltage and second electric current got, determine pair of the conductor (30)
Ground insulation resistance.
8. controller according to claim 7, which is characterized in that the conductor (30) is platinum ontology.
9. controller according to claim 7, which is characterized in that described first, which obtains module, is used for by being arranged described
The first testing current table (40) between the second end (202) and ground of test resistance (20) obtains first electric current.
10. controller according to claim 7, which is characterized in that the second acquisition module includes at least one of the following:
Secondary side output open circuit voltage acquisition submodule, for by setting in the first lead-out terminal (103) and described the
First voltage test table (50) between two output terminals (104) is electric come the secondary side output open circuit for obtaining the transformer (10)
Pressure；
Second electric current acquisition submodule, for by setting the test resistance (20) the second end (202) with it is described
The second testing current table (60) between first lead-out terminal (103) obtains second electric current；
First voltage acquisition submodule, for by setting the test resistance (20) the second end (202) with it is described
Second voltage between first lead-out terminal (103) tests table (70) to obtain the first voltage.
11. the controller according to any one of claim 7-10, which is characterized in that the determining module be used for by with
Lower formula determines the insulation against ground resistance of the conductor (30):
Wherein, R indicates the insulation against ground resistance of the conductor (30)；U2Indicate the secondary side output open circuit voltage；A1Indicate institute
State the first electric current；V1Indicate the first voltage；A2Indicate second electric current.
12. the controller according to any one of claim 7-10, which is characterized in that the controller further include:
Output module, for exporting the insulation against ground resistance of the conductor (30).
13. a kind of for measuring the control system of conductor insulation against ground resistance, which is characterized in that the control system includes:
Measuring circuit for the conductor insulation against ground resistance, comprising: transformer (10) and test resistance (20), wherein institute
A side terminal of transformer (10) is stated for connecting power supply, the secondary side first lead-out terminal (103) of the transformer (10)
For connecting conductor (30), secondary side second output terminal sub (104) and the test resistance (20) of the transformer (10)
First end (201) is connected, the second end (202) of the test resistance (20) for be grounded or with the first lead-out terminal
(103) it docks, the conductor (30) directly contacts with ground,
For measuring the controller of conductor insulation against ground resistance, the controller is according to any one of claim 7-12
Controller.
14. system according to claim 13, which is characterized in that the system also includes it is following at least one:
First testing current table (40) connect with the first acquisition module, setting in the test resistance (20) described the
Between two ends (202) and ground, the conductor (30) and the survey are connected in the first lead-out terminal (103) for detecting
Flow through the first electric current of the test resistance (20) when the second end (202) ground connection of examination resistance (20), and by described first
Electric current is sent to described first and obtains module；
First voltage tests table (50), connect, is arranged in the first lead-out terminal (103) and institute with the second acquisition module
It states between second output terminal sub (104), for detecting the secondary side output open circuit voltage, and by the secondary side output open circuit
Voltage is sent to described second and obtains module；
Second testing current table (60) connect with the second acquisition module, setting in the test resistance (20) described the
Between two ends (202) and the first lead-out terminal (103), for detecting in the first lead-out terminal (103) and the survey
Flow through the second electric current of the test resistance (20) when the second end (202) docking of examination resistance (20), and by described second
Electric current is sent to described second and obtains module；
Second voltage tests table (70), connect with the second acquisition module, setting in the test resistance (20) described the
Between two ends (202) and the first lead-out terminal (103), for detecting in the first lead-out terminal (103) and the survey
Try the institute of the first lead-out terminal (103) and the test resistance (20) when the second end (202) docking of resistance (20)
The first voltage between second end (202) is stated, and the first voltage is sent to described second and obtains module.
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| CN106970267A (en) | 2017-07-21 |
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Denomination of invention: Measurement method of insulation resistance to ground of conductor, controller and control system Effective date of registration: 20200710 Granted publication date: 20191008 Pledgee: Beijing State Owned Financial Leasing Co., Ltd Pledgor: ZHENGZHOU XUFEI OPTOELECTRONIC TECHNOLOGY Co.,Ltd. Registration number: Y2020990000736 |
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