CN212781025U - Bus differential protection debugging simulation device in running state - Google Patents
Bus differential protection debugging simulation device in running state Download PDFInfo
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- CN212781025U CN212781025U CN202021306914.8U CN202021306914U CN212781025U CN 212781025 U CN212781025 U CN 212781025U CN 202021306914 U CN202021306914 U CN 202021306914U CN 212781025 U CN212781025 U CN 212781025U
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- differential protection
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- bus differential
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- debugging
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- 238000004088 simulation Methods 0.000 title claims abstract description 28
- 238000009413 insulation Methods 0.000 claims abstract description 3
- 238000012360 testing method Methods 0.000 abstract description 6
- 230000000737 periodic effect Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 3
- 238000007689 inspection Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000016507 interphase Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
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Abstract
The utility model discloses a bus differential protection debugging simulation device in an operating state, which comprises a simulation board made of an insulation board and a row of wire holders fixed on the simulation board, wherein each wire holder consists of two wiring terminals; each wire holder is electrically connected with an electric control switch; the output end of each electric control switch is electrically connected with a load indicator lamp. The utility model discloses a bus differential protection debugging analogue means under the running state can realize carrying out circuit breaker simulation linkage divide-shut brake debugging to generating line differential protection device at the transformer substation operation in-process, does not influence the normal operating of transformer substation under the area load state, makes things convenient for generating line differential protection device's periodic test debugging.
Description
Technical Field
The utility model relates to a bus differential protection online simulation device, concretely relates to bus differential protection debugging analogue means under running state belongs to bus differential protection online simulation device technical field.
Background
At present, a newly built 110kV or above transformer substation basically uses a microcomputer bus differential protection device for protecting a bus single-phase fault and an interphase fault. According to the requirements of relay protection and automatic power grid safety device inspection regulations, a microcomputer protection device with a 110kV voltage class is suitable for carrying out partial inspection once every 2-4 years and carrying out complete inspection once every 6 years. The tripping and closing tests of the circuit breaker by using the protection device are preferably combined with primary equipment maintenance.
The bus differential protection device test cannot perform tripping and closing tests of the bus differential protection linkage breaker in a loaded operation state of a transformer substation due to the linkage of all primary equipment in an operation bus. If all substations are powered off, huge economic loss is caused, and particularly, the transformer substations of important industrial enterprises have large loads and high requirements on process continuity production, so that all buses cannot be powered off; therefore, the circuit of the linkage breaker of the bus differential protection device cannot be comprehensively debugged and checked, and the operation reliability of the bus protection device cannot be ensured.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides an operating condition is bus differential protection debugging analogue means down can realize carrying out circuit breaker simulation linkage divide-shut brake debugging at line pair generating line differential protection device.
The utility model discloses a bus differential protection debugging simulation device under the running state, which comprises a simulation board made of an insulation board and a row of wire holders fixed on the simulation board, wherein each wire holder consists of two wiring terminals; each wire holder is electrically connected with an electric control switch; the output end of each electric control switch is electrically connected with a load indicator light; during debugging, fault events in an actual running state are simulated, so that when the busbar differential protection device detects that a busbar is abnormal, the busbar differential protection device outputs a circuit breaking signal corresponding to a circuit breaker port, an electric control switch is driven to act by using the signal, and when the electric control switch is closed, a corresponding load indicator lamp is lightened, so that the normal signal output of the path is indicated; and the comprehensive verification of the bus differential protection device is ensured.
Further, the electric control switch is composed of a direct current relay; the normally open end of the direct current relay is electrically connected with a load indicator lamp; and the coil end of the direct current relay is electrically connected with a wiring terminal.
Further, the load indicator lamp is powered by a wiring terminal or an external power supply.
Furthermore, the external power supply is electrically connected with one normally open contact of the direct current relay, and the other normally open contact of the direct current relay is electrically connected with the load indicator lamp; the other end of the load indicator light is electrically connected with the negative electrode of an external power supply.
Further, the wire holder is provided with 24 sets.
Further, the wire holder is connected with a breaker outlet of the bus differential protection device.
The utility model discloses a prior art compares, the utility model discloses a bus differential protection debugging analogue means under the running state can realize carrying out circuit breaker simulation linkage divide-shut brake debugging to generating line differential protection device at the transformer substation operation in-process, does not influence the normal operating of transformer substation under the area load state, makes things convenient for generating line differential protection device's periodic test debugging.
Drawings
Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention.
Detailed Description
Example 1:
as shown in fig. 1, the bus differential protection debugging simulation device in an operating state comprises a simulation board 1 made of an insulating board and a row of wire holders 2 fixed on the simulation board, wherein each wire holder consists of two wire connecting terminals 21; each wire holder 2 is electrically connected with an electric control switch 3; the output end of each electric control switch 3 is electrically connected with a load indicator lamp 4; during debugging, fault events in an actual running state are simulated, so that when the busbar differential protection device detects that a busbar is abnormal, the busbar differential protection device outputs a circuit breaking signal corresponding to a circuit breaker port, an electric control switch is driven to act by using the signal, and when the electric control switch is closed, a corresponding load indicator lamp is lightened, so that the normal signal output of the path is indicated; the comprehensive check of the bus differential protection device is ensured; the electric control switch 3 is composed of a direct current relay; the normally open end of the direct current relay is electrically connected with a load indicator lamp 4; the coil end of the direct current relay is electrically connected with a wiring terminal 21; the wire holder 2 is connected with the breaker outlet of the bus differential protection device; the utility model discloses a bus differential protection debugging analogue means under running state, with direct current auxiliary relay simulation high voltage circuit breaker divide-shut brake coil operating condition, divide-shut brake pilot lamp simulation circuit breaker actual divide-shut brake state, the terminal row of connection terminal represents the differential protection of generating line and exports the tie point; according to the protection range of the bus differential protection device, a load linkage simulation device carried by a high-voltage bus is manufactured, corresponding opening and closing indicator lamps and simulation action direct-current relays are configured for each load, when bus differential protection is used for carrying out periodic debugging linkage tests, only all circuit breaker outlets of the bus differential protection device are connected to a wiring terminal of the simulation device, and meanwhile, opening and closing outlet pressing plates of a bus differential protection cabinet are removed, so that on-site periodic verification of the bus differential protection device can be realized, the interference on online operation equipment is reduced, and the equipment safety of a transformer substation of 110kV or more in the operation period is ensured; during debugging, only the busbar differential protection outlet circuit is subjected to line change, and the rest analog quantity and the rest switching value are discriminated by the busbar differential protection device to simulate a fault event in an actual operation state, so that the busbar differential protection device is ensured to be comprehensively checked.
The load indicator lamp 4 is powered by a wiring terminal or an external power supply; the external power supply is electrically connected with one normally open contact of the direct current relay, and the other normally open contact of the direct current relay is electrically connected with the load indicator lamp 4; the other end of the load indicator lamp 4 is electrically connected with the negative electrode of an external power supply; the wire holder is provided with 24 groups; when the coil of the direct current relay is electrified, the two normally open contacts are attracted, and then the external power supply supplies power to the load indicating lamp.
The above-mentioned embodiment is only the preferred embodiment of the present invention, so all the equivalent changes or modifications made by the structure, features and principles of the present invention are included in the claims of the present invention.
Claims (6)
1. The utility model provides a bus differential protection debugging analogue means under running state which characterized in that: the device comprises a simulation board made of an insulation board and a row of wire holders fixed on the simulation board, wherein each wire holder consists of two wiring terminals; each wire holder is electrically connected with an electric control switch; the output end of each electric control switch is electrically connected with a load indicator lamp.
2. The bus differential protection debugging simulation device in an operating state according to claim 1, characterized in that: the electric control switch is composed of a direct current relay; the normally open end of the direct current relay is electrically connected with a load indicator lamp; and the coil end of the direct current relay is electrically connected with a wiring terminal.
3. The bus differential protection debugging simulation device in an operating state according to claim 1, characterized in that: the load indicator lamp is powered by the wiring terminal or an external power supply.
4. The bus differential protection debugging simulation apparatus in an operating state according to claim 3, characterized in that: the external power supply is electrically connected with one normally open contact of the direct current relay, and the other normally open contact of the direct current relay is electrically connected with the load indicator lamp; the other end of the load indicator light is electrically connected with the negative electrode of an external power supply.
5. The bus differential protection debugging simulation device in an operating state according to claim 1, characterized in that: the wire holder is provided with 24 sets.
6. The bus differential protection debugging simulation device in an operating state according to claim 1, characterized in that: and the wire holder is connected with the breaker outlet of the bus differential protection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021306914.8U CN212781025U (en) | 2020-07-07 | 2020-07-07 | Bus differential protection debugging simulation device in running state |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021306914.8U CN212781025U (en) | 2020-07-07 | 2020-07-07 | Bus differential protection debugging simulation device in running state |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212781025U true CN212781025U (en) | 2021-03-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021306914.8U Active CN212781025U (en) | 2020-07-07 | 2020-07-07 | Bus differential protection debugging simulation device in running state |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212781025U (en) |
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2020
- 2020-07-07 CN CN202021306914.8U patent/CN212781025U/en active Active
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