CN109581136A - Current loop charges the anti-open circuit set of disjunction and method - Google Patents
Current loop charges the anti-open circuit set of disjunction and method Download PDFInfo
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- CN109581136A CN109581136A CN201710911248.7A CN201710911248A CN109581136A CN 109581136 A CN109581136 A CN 109581136A CN 201710911248 A CN201710911248 A CN 201710911248A CN 109581136 A CN109581136 A CN 109581136A
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000012360 testing method Methods 0.000 claims abstract description 19
- 230000005611 electricity Effects 0.000 claims abstract description 7
- 238000005259 measurement Methods 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 abstract description 6
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
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Abstract
The invention discloses a kind of anti-open circuit set of current loop electrification disjunction and methods, the enter line side and outgoing line side terminal block of the present apparatus are separately connected threephase current transformer circuit and secondary circuit load, terminal block connection sliding block is set to enter line side terminal block and outgoing line side terminal block, three-phase dynamic circuit connector disconnecting link input terminal connects the input terminal of each phase current table through test lead connection enter line side terminal block, output end through three-phase fuse, and the output end of each phase current table connects grounded screen through three-phase shortcircuit earth jack.Whether this method is normal by division three-phase dynamic circuit connector disconnecting link test combined floodgate, and terminal block connection sliding block is unclamped, and disconnects enter line side terminal block and connect with outgoing line side terminal block and lock afterwards in place to the sliding of outgoing line side terminal block；Secondary circuit load power down loads secondary circuit and realizes replacement or processing.The present apparatus and method realize do not have a power failure replacement or the processing in the case of important transmission of electricity, controller switching equipment secondary circuit load faulty, reduce non-programmed halt accident, it is ensured that service personnel's operation safety.
Description
Technical field
The present invention relates to a kind of anti-open circuit set of current loop electrification disjunction and methods.
Background technique
The secondary circuits such as the important power generation of electric system, transmission of electricity, the relay protection of controller switching equipment, metering, which are supported on, to break down
In the case where needing replacing, the processing that do not have a power failure be easy to cause current loop open circuit accident, directly threatens service personnel's person and sets
Standby safety；If temporary interruption will cause greater loss again, troubleshooting usually faces awkward situation.
With automation, extensive use of the integrated, intellectualized technology in electric system, the devices such as relay protection, metering
Become increasingly complex, function it is more and more, precision is higher and higher, not only takes part in signal transmission, communicates transfer, or even take part in control
System, once catastrophic failure, influence, harm are quite big, if cannot quickly handle, consequence is generally than more serious.
Through retrieving, there is no the technology and equipment of complete mature can be in loads such as relay protection, meterings both at home and abroad yet
The online replacement that do not have a power failure is realized under fault condition.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of anti-open circuit set of current loop electrification disjunction and methods, originally
Device and method realize do not have a power failure replacement or the place in the case of important transmission of electricity, the relay protection of controller switching equipment, metering load faulty
Reason reduces non-programmed halt accident, it is ensured that the operation safety of service personnel realizes safe Electrician Operation.
In order to solve the above technical problems, the current loop electrification anti-open circuit set of disjunction of the present invention includes threephase current transformer
Circuit, secondary loop of mutual inductor terminal block and secondary circuit load, the secondary loop of mutual inductor terminal block include
Enter line side terminal block and outgoing line side terminal block, the enter line side terminal block connect the threephase current transformer circuit, it is described go out
Line side terminal block connects the secondary circuit load, and the present apparatus further includes terminal block connection sliding block, three-phase dynamic circuit connector disconnecting link, three-phase guarantor
Dangerous silk, A phase current table, B phase current table, C phase current table, three-phase shortcircuit earth jack and test lead, the terminal block connection
Sliding block is set to enter line side terminal block and outlet side terminal described in the secondary loop of mutual inductor terminal block and connection or disjunction
The input terminal of row, the three-phase dynamic circuit connector disconnecting link are connected described in the enter line side terminal block, output end warp by the test lead
Three-phase fuse is separately connected the input terminal of the A phase current table, B phase current table and C phase current table, the A phase current table, B
Phase current table connects the three-phase shortcircuit earth jack, the three-phase shortcircuit earth jack connection with the output end of C phase current table
Grounded screen.
Further, the three-phase dynamic circuit connector disconnecting link is manual disconnecting link.
Further, the blowout current of the three-phase fuse is greater than the specified electricity of threephase current transformer circuit secondary side
2 times of stream.
It is a kind of to include the following steps: using the current loop electrification anti-open-circuit method of disjunction of above-mentioned apparatus
Step 1: that is, connection A phase current table, B phase are electric with test wire connection three-phase shortcircuit earth jack and Overhaul site grounded screen
The output end and grounded screen of flow table and C phase current table；
Step 2: closing three-phase dynamic circuit connector disconnecting link, measurement three-phase dynamic circuit connector disconnecting link input terminal and grounded screen electric resistance value, which is zero
It is normal to show that three-phase dynamic circuit connector disconnecting link closes a floodgate；
Step 3: three-phase dynamic circuit connector disconnecting link separating brake is connected into three-phase dynamic circuit connector disconnecting link input terminal and enter line side terminal block with test lead,
Three-phase dynamic circuit connector plug-in strip is quickly closed, observation A phase current table, B phase current table, C phase current table there should be same current to indicate and without rolling
It is dynamic；
Step 4: terminal block connection sliding block is unclamped, disconnects enter line side terminal block and connect with outgoing line side terminal block and to outgoing line side
Terminal block sliding locks afterwards in place；Outgoing line side terminal block and Overhaul site grounded screen test wire three-phase shortcircuit are grounded；
Step 5: power-off is realized in secondary circuit load and three-phase shortcircuit is grounded, secondary circuit can be loaded and realize replacement or place
Reason.
Since the current loop of the present invention anti-open circuit set of electrification disjunction and method use above-mentioned technical proposal, i.e., the present apparatus into
Line side terminal block connects threephase current transformer circuit, the connection secondary circuit load of outgoing line side terminal block, terminal block connection sliding block
Set on secondary loop of mutual inductor terminal block and connection or disjunction enter line side terminal block and outgoing line side terminal block, three-phase dynamic circuit connector knife
The input terminal of lock connects enter line side terminal block, output end by test lead and connects A phase, B phase and C phase current through three-phase fuse
The input terminal of table, the output end of each phase current table connect three-phase shortcircuit earth jack, and three-phase shortcircuit earth jack connects grounded screen.
Whether this method is normal by division three-phase dynamic circuit connector disconnecting link test combined floodgate, and terminal block connection sliding block is unclamped, and disconnects inlet wire side
Son row connect with outgoing line side terminal block and locks afterwards in place to the sliding of outgoing line side terminal block；Secondary circuit load power down, to secondary
Loop load realizes replacement or processing.The present apparatus and method realize important transmission of electricity, the relay protection of controller switching equipment, metering load event
Do not have a power failure replacement or processing in the case of barrier reduce non-programmed halt accident, it is ensured that the operation safety of service personnel realizes safety
Electrician Operation.
Detailed description of the invention
The present invention will be further described in detail below with reference to the accompanying drawings and embodiments:
Fig. 1 is that current loop of the present invention charges the anti-open circuit set schematic diagram of disjunction.
Specific embodiment
Embodiment is as shown in Figure 1, the current loop of the present invention electrification anti-open circuit set of disjunction includes that threephase current transformer returns
Road 1, secondary loop of mutual inductor terminal block 2 and secondary circuit load 3, the secondary loop of mutual inductor terminal block 2 is wrapped
Enter line side terminal block and outgoing line side terminal block are included, the enter line side terminal block connects the threephase current transformer circuit 1, described
Outgoing line side terminal block connects secondary circuit load 3, the present apparatus further include terminal block connection sliding block 21, three-phase dynamic circuit connector disconnecting link 4,
Three-phase fuse 5, A phase current table 6, B phase current table 7, C phase current table 8, three-phase shortcircuit earth jack 9 and test lead 10, institute
Terminal block connection sliding block 21 is stated set on inlet wire side terminal described in the secondary loop of mutual inductor terminal block 2 and connection or disjunction
The input terminal of row and outgoing line side terminal block, the three-phase dynamic circuit connector disconnecting link 4 connects the inlet wire side by the test lead 10
Son row, output end are separately connected the defeated of the A phase current table 6, B phase current table 7 and C phase current table 8 through the three-phase fuse 5
Entering end, the A phase current table 6, B phase current table 7 connect the three-phase shortcircuit earth jack 9 with the output end of C phase current table 8,
The three-phase shortcircuit earth jack 9 connects grounded screen.
Further, the three-phase dynamic circuit connector disconnecting link 4 is manual disconnecting link.Manual disconnecting link ensures the reliability of division, avoids electronic
Disconnecting link accident power-off causes threephase current transformer circuit to be connected to again with the secondary load of failure, threatens service personnel's life peace
Complete or equipment safety.
Further, it is specified to be greater than 1 secondary side of threephase current transformer circuit for the blowout current of the three-phase fuse 5
2 times of electric current.Preventing the dash current of three-phase dynamic circuit connector disconnecting link combined floodgate moment leads to three-phase blown fuse, avoids artificially causing electricity
Flow back to road open circuit accident.
It is a kind of to include the following steps: using the current loop electrification anti-open-circuit method of disjunction of above-mentioned apparatus
Step 1: that is, connection A phase current table, B phase are electric with test wire connection three-phase shortcircuit earth jack and Overhaul site grounded screen
The output end and grounded screen of flow table and C phase current table；
Step 2: closing three-phase dynamic circuit connector disconnecting link, measurement three-phase dynamic circuit connector disconnecting link input terminal and grounded screen electric resistance value, which is zero
It is normal to show that three-phase dynamic circuit connector disconnecting link closes a floodgate；
Step 3: three-phase dynamic circuit connector disconnecting link separating brake is connected into three-phase dynamic circuit connector disconnecting link input terminal and enter line side terminal block with test lead,
Three-phase dynamic circuit connector plug-in strip is quickly closed, observation A phase current table, B phase current table, C phase current table there should be same current to indicate and without rolling
It is dynamic；
Step 4: terminal block connection sliding block is unclamped, disconnects enter line side terminal block and connect with outgoing line side terminal block and to outgoing line side
Terminal block sliding locks afterwards in place；Outgoing line side terminal block and Overhaul site grounded screen test wire three-phase shortcircuit are grounded；
Step 5: power-off is realized in secondary circuit load and three-phase shortcircuit is grounded, secondary circuit can be loaded and realize replacement or place
Reason.
In secondary circuit load faulty, the present apparatus passes through terminal block connection sliding block for secondary loop of mutual inductor terminal
The enter line side terminal block and outgoing line side terminal block of row is separated, and slides and lock to outgoing line side terminal block, so that inlet wire side
Son row separates with secondary circuit load, realizes the isolation in secondary circuit load electrical meaning；Pass through three-phase dynamic circuit connector disconnecting link simultaneously
The open circuit that not will cause three-phase current circuit again ensure that replacement or processing to the load of failure secondary circuit, and ensure the person
And equipment safety, non-programmed halt accident is reduced, realizes safe Electrician Operation.
Claims (4)
1. a kind of current loop charges the anti-open circuit set of disjunction, including threephase current transformer circuit, Current Transformer Secondary are returned
Road terminal block and secondary circuit load, the secondary loop of mutual inductor terminal block includes enter line side terminal block and outlet side
Son row, the enter line side terminal block connect the threephase current transformer circuit, and the outgoing line side terminal block connection is described secondary
Loop load, it is characterised in that: the present apparatus further includes terminal block connection sliding block, three-phase dynamic circuit connector disconnecting link, three-phase fuse, A phase electricity
Flow table, B phase current table, C phase current table, three-phase shortcircuit earth jack and test lead, the terminal block connection sliding block are set to institute
State enter line side terminal block and outgoing line side terminal block described in secondary loop of mutual inductor terminal block and connection or disjunction, the three-phase
The input terminal of dynamic circuit connector disconnecting link connects the enter line side terminal block, output end through the three-phase fuse point by the test lead
The input terminal of the A phase current table, B phase current table and C phase current table, the A phase current table, B phase current table and C phase are not connected
The output end of ammeter connects the three-phase shortcircuit earth jack, and the three-phase shortcircuit earth jack connects grounded screen.
2. current loop according to claim 1 charges the anti-open circuit set of disjunction, it is characterised in that: the three-phase dynamic circuit connector knife
Lock is manual disconnecting link.
3. current loop according to claim 1 or 2 charges the anti-open circuit set of disjunction, it is characterised in that: the three-phase is protected
The blowout current of dangerous silk is greater than 2 times of the threephase current transformer circuit secondary side rated current.
4. a kind of current loop using any one of claims 1 to 3 described device charges the anti-open-circuit method of disjunction, feature exists
In: this method includes the following steps:
Step 1: that is, connection A phase current table, B phase are electric with test wire connection three-phase shortcircuit earth jack and Overhaul site grounded screen
The output end and grounded screen of flow table and C phase current table；
Step 2: closing three-phase dynamic circuit connector disconnecting link, measurement three-phase dynamic circuit connector disconnecting link input terminal and grounded screen electric resistance value, which is zero
It is normal to show that three-phase dynamic circuit connector disconnecting link closes a floodgate；
Step 3: three-phase dynamic circuit connector disconnecting link separating brake is connected into three-phase dynamic circuit connector disconnecting link input terminal and enter line side terminal block with test lead,
Three-phase dynamic circuit connector plug-in strip is quickly closed, observation A phase current table, B phase current table, C phase current table there should be same current to indicate and without rolling
It is dynamic；
Step 4: terminal block connection sliding block is unclamped, disconnects enter line side terminal block and connect with outgoing line side terminal block and to outgoing line side
Terminal block sliding locks afterwards in place；Outgoing line side terminal block and Overhaul site grounded screen test wire three-phase shortcircuit are grounded；
Step 5: power-off is realized in secondary circuit load and three-phase shortcircuit is grounded, secondary circuit can be loaded and realize replacement or place
Reason.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710911248.7A CN109581136A (en) | 2017-09-29 | 2017-09-29 | Current loop charges the anti-open circuit set of disjunction and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710911248.7A CN109581136A (en) | 2017-09-29 | 2017-09-29 | Current loop charges the anti-open circuit set of disjunction and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109581136A true CN109581136A (en) | 2019-04-05 |
Family
ID=65919018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710911248.7A Pending CN109581136A (en) | 2017-09-29 | 2017-09-29 | Current loop charges the anti-open circuit set of disjunction and method |
Country Status (1)
| Country | Link |
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| CN (1) | CN109581136A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113588993A (en) * | 2021-06-10 | 2021-11-02 | 华能嘉祥发电有限公司 | Device and method for replacing ammeter on line |
| CN113707441A (en) * | 2021-08-13 | 2021-11-26 | 国网河北省电力有限公司检修分公司 | Adjustable transformation ratio CT wiring terminal capable of preventing open circuit in uninterrupted state |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113588993A (en) * | 2021-06-10 | 2021-11-02 | 华能嘉祥发电有限公司 | Device and method for replacing ammeter on line |
| CN113707441A (en) * | 2021-08-13 | 2021-11-26 | 国网河北省电力有限公司检修分公司 | Adjustable transformation ratio CT wiring terminal capable of preventing open circuit in uninterrupted state |
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Application publication date: 20190405 |