CN204967261U - Parallelly connected damping device - Google Patents
Parallelly connected damping device Download PDFInfo
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- CN204967261U CN204967261U CN201520745832.6U CN201520745832U CN204967261U CN 204967261 U CN204967261 U CN 204967261U CN 201520745832 U CN201520745832 U CN 201520745832U CN 204967261 U CN204967261 U CN 204967261U
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- controller
- transformer
- coil
- damping
- arc suppression
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Abstract
The utility model relates to a parallelly connected damping device. Its purpose is in order to provide a simple structure, to control simple and convenient, the reliable damping device of operation. The utility model discloses a grounding transformer, controller, arc suppressing coil, on -load switch and damping resistance. Grounding transformer's once side is connected with power transmission system's generating line, the primary coil's that grounding transformer's neutral point and arc suppressing coil once inclined one end is connected, primary coil's the other end and zero potential point connection, the secondary coil and the damping resistance parallel connection of arc suppressing coil secondary side, still be provided with the fuse between arc suppressing coil and the damping resistance, the last shunting that is provided with of primary coil is taken a percentage, the shunting is taken a percentage and is connected with the control end of controller through on -load switch, the signal input part of controller is connected with voltage transformer's secondary side, electric transformer's once side is connected with power transmission system's generating line. The control signal of controller gets to the voltage transformer who is connected with the generating line.
Description
Technical field
The utility model relates to electric field, particularly relates to a kind of damping device in parallel.
Background technology
Arc suppression coil tracing compensation the complete sets of equipment have been the known and familiar power system security protection products of people at present, are effective arc extinguishings and suppress effective equipment of resonance overvoltage when there is single phase ground fault in Medium voltage power supply system.In auto-tracing arc-eliminating coil, degree of regulation is higher, and residual flow is less, and system is run close to resonance point, but inevitably produces series resonance over-voltage phenomenon, and this does not allow to occur.In order to solve this contradiction, turn-adjusting arc-extinguishing winding is direct series damping resistor usually, thus increase electrical network ratio of damping, when electrical network is normally run, series resonance over-voltage is less than 15% of specified phase voltage value, but this cascaded structure connects complicated, take up room large, on market, most producer damp resistance throw-cut mode is single, and technology is also very immature.
Utility model content
The technical problems to be solved in the utility model be to provide a kind of structure simple, manipulate easy, reliable damping device in parallel.
The utility model damping device in parallel, wherein, comprise grounding transformer, controller, arc suppression coil and damping resistance, the primary side of grounding transformer is connected with the bus of transmission system, the neutral point of grounding transformer is connected with one end of the primary winding of arc suppression coil primary side, the other end of primary winding is connected with zero potential point, secondary coil and the damping resistance of arc suppression coil secondary side are connected in parallel, fuse and damp resistance throw-cut device is also provided with between arc suppression coil and damping resistance, the control end of damp resistance throw-cut device is connected with the control signal output of controller, primary winding is provided with shunting tap, shunting tap is connected with one end of loaded switch, the other end of loaded switch is connected with the control end of controller, the signal input part of controller is connected with the secondary side of voltage transformer, the electricity primary side of instrument transformer is connected with the bus of transmission system.
The utility model damping device in parallel, is also provided with the first circuit breaker between wherein said grounding transformer and bus.
The utility model damping device in parallel; wherein said grounding transformer is connected by the first wire with between arc suppression coil; first wire is provided with single-phase isolating switch; the second wire drawn by the first wire between single-phase isolating switch and grounding transformer; the other end of the second wire is connected with zero potential point, and the second wire is provided with overvoltage protection device.
The utility model damping device in parallel, is also provided with the second circuit breaker between the bus of wherein said transmission system and voltage transformer.
The utility model damping device in parallel, wherein said controller is PLC.
The utility model damping device difference from prior art in parallel is: the utility model is parallel with damping resistance on the secondary coil of arc suppression coil, instead of the connected mode of series resistance in the primary winding of arc suppression coil, enormously simplify circuit structure, and also fuse is provided with between arc suppression coil and damping resistance, once damping resistance can not exit in time, fuse will fuse automatically, thus ensure that damping resistance excises smoothly from circuit, avoid damping resistance and occurred by the situation of burning.The primary winding of arc suppression coil is also provided with shunting tap, shunting tap is connected with one end of loaded switch, the other end of loaded switch is connected with the control end of controller, controller is by controlling loaded switch, thus regulate the shunting tap link position on the primary winding of arc suppression coil, thus the size in the primary winding place in circuit of arc suppression coil is controlled, design ingenious, control convenient.
Below in conjunction with accompanying drawing, the utility model damping device in parallel is described further.
Accompanying drawing explanation
Fig. 1 is the circuit structure diagram of the utility model damping device in parallel.
Embodiment
As shown in Figure 1, be the circuit structure diagram of the utility model damping device in parallel, comprise grounding transformer 2, voltage transformer 3, controller 6, arc-extinction device and damping resistance R.Arc-extinction device comprises again arc suppression coil and loaded switch KG, and arc suppression coil comprises again primary winding N1 and secondary coil N2, and primary winding N1 and secondary coil N2 is separately positioned on primary side and the secondary side of arc suppression coil.Grounding transformer 2 is connected with the bus 1 of transmission system respectively by cable with the primary side of voltage transformer 3, cable between grounding transformer 2 and bus 1 is provided with the first circuit breaker 4, cable between voltage transformer 3 and bus 1 is provided with the second circuit breaker 5, the secondary side of voltage transformer 5 is connected with the signal input part of controller 6, the voltage on bus 1 after voltage transformer 3 changes for controller 6 carries out providing actuating signal.The neutral point N of grounding transformer 2 is connected with the end of incoming cables of arc-extinction device by the first wire; first wire is provided with one-way isolating switch G; the second wire drawn by the first wire between single-phase isolating switch G and grounding transformer 2; the other end of the second wire is connected with zero potential point GND, and the second wire is provided with overvoltage protection device MOV.The leading-out terminal of arc-extinction device is connected with zero potential point GND, the primary winding N1 of arc suppression coil is connected with between the end of incoming cables of arc-extinction device and leading-out terminal, secondary coil N2 and the damping resistance R of arc suppression coil are connected in parallel, fuse RD and damp resistance throw-cut device VS is also provided with between the secondary coil N2 and damping resistance R of arc suppression coil, the control end of damp resistance throw-cut device VS is connected with the control signal output of controller 6, is controlled by the on off state of controller 6 couples of damp resistance throw-cut device VS.The primary winding N1 of arc suppression coil is also provided with shunting tap, loaded switch KG is provided with between shunting tap and controller 6, shunting tap is connected with one end of loaded switch KG, the other end of loaded switch KG is connected with the control end of controller 6, controller 6 sends control signal by control end, control loaded switch KG and connect the position of shunting tap on the primary winding N1 of arc suppression coil, thus the size in the primary winding N1 place in circuit of arc suppression coil is controlled.
The controller 6 adopted in an embodiment of the present utility model is PLC.
Operation principle of the present utility model is: the first circuit breaker 4, second circuit breaker 5, single-phase isolating switch G and loaded switch KG are closed, and arc-extinction device and controller 6 drop in transmission system and carry out work.When transmission system normally works, damping resistance R and secondary coil N2 is connected in parallel, thus increases the ratio of damping of transmission system, and when transmission system is normally run, series resonance over-voltage is less than specified phase voltage; When transmission system generation single phase ground fault, controller 6 controls damp resistance throw-cut device VS disconnection and exits damping resistance R, once damping resistance R can not exit in time, fuse RD fuses automatically, thus ensure that damping resistance R excises smoothly from circuit, the ratio of damping of transmission system reduces, thus makes arc suppression coil realize full compensation.In control procedure, also control by controller 6 position of shunting tap on the primary winding N1 of arc suppression coil that be connected with loaded switch KG, change the size in primary winding N1 place in circuit, thus control the size of secondary coil N2.
The utility model damping device in parallel, the secondary coil N2 of arc suppression coil is parallel with damping resistance R, instead of the connected mode of series resistance in the primary winding N1 of arc suppression coil, enormously simplify circuit structure, and fuse RD is also provided with between arc suppression coil and damping resistance R, once damping resistance R can not exit in time, fuse RD will fuse automatically, thus ensure that damping resistance R excises smoothly from circuit, avoid damping resistance R and occurred by the situation of burning.The primary winding N1 of arc suppression coil is also provided with shunting tap, shunting tap is connected with one end of loaded switch KG, the other end of loaded switch KG is connected with the control end of controller 6, controller 6 is by controlling loaded switch KG, thus regulate the shunting tap link position on the primary winding N1 of arc suppression coil, thus the size in the primary winding N1 place in circuit of arc suppression coil is controlled, design ingenious, control convenient.The utility model structure is simple, it is easy, reliable to manipulate, and compared with prior art has obvious advantage.
Above-described embodiment is only be described preferred implementation of the present utility model; not scope of the present utility model is limited; under the prerequisite not departing from the utility model design spirit; the various distortion that those of ordinary skill in the art make the technical solution of the utility model and improvement, all should fall in protection range that the utility model claims determine.
Claims (5)
1. a damping device in parallel, it is characterized in that: comprise grounding transformer (2), controller (6), arc suppression coil and damping resistance (R), the primary side of grounding transformer (2) is connected with the bus (1) of transmission system, the neutral point (N) of grounding transformer (2) is connected with one end of the primary winding (N1) of arc suppression coil primary side, the other end of primary winding (N1) is connected with zero potential point (GND), secondary coil (N2) and the damping resistance (R) of arc suppression coil secondary side are connected in parallel, fuse (RD) and damp resistance throw-cut device (VS) is also provided with between arc suppression coil and damping resistance (R), the control end of damp resistance throw-cut device (VS) is connected with the control signal output of controller (6), primary winding (N1) is provided with shunting tap, shunting tap is connected with the one end of loaded switch (KG), the other end of loaded switch (KG) is connected with the control end of controller (6), the signal input part of controller (6) is connected with the secondary side of voltage transformer (3), the primary side of electricity instrument transformer (3) is connected with the bus (1) of transmission system.
2. damping device in parallel according to claim 1, is characterized in that: be also provided with the first circuit breaker (4) between the bus (1) of described grounding transformer (2) and transmission system.
3. damping device in parallel according to claim 1; it is characterized in that: described grounding transformer (2) is connected by the first wire with between arc suppression coil; first wire is provided with single-phase isolating switch (G); the second wire drawn by the first wire between single-phase isolating switch (G) and grounding transformer (2); the other end of the second wire is connected with zero potential point (GND), and the second wire is provided with overvoltage protection device (MOV).
4. damping device in parallel according to claim 1, is characterized in that: be also provided with the second circuit breaker (5) between the bus (1) of described transmission system and voltage transformer (3).
5. damping device in parallel according to claim 1, is characterized in that: described controller (6) is PLC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520745832.6U CN204967261U (en) | 2015-09-24 | 2015-09-24 | Parallelly connected damping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520745832.6U CN204967261U (en) | 2015-09-24 | 2015-09-24 | Parallelly connected damping device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204967261U true CN204967261U (en) | 2016-01-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520745832.6U Active CN204967261U (en) | 2015-09-24 | 2015-09-24 | Parallelly connected damping device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204967261U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107611958A (en) * | 2017-08-11 | 2018-01-19 | 国网新源水电有限公司新安江水力发电厂 | Automatic tracking and compensating arc distinction system for generator neutral point |
-
2015
- 2015-09-24 CN CN201520745832.6U patent/CN204967261U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107611958A (en) * | 2017-08-11 | 2018-01-19 | 国网新源水电有限公司新安江水力发电厂 | Automatic tracking and compensating arc distinction system for generator neutral point |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 063700 Riyuetan Pool Road, Luanxian Economic Development Zone, Tangshan City, Hebei 010 Patentee after: Tangshan Dongtang electrical Limited by Share Ltd Address before: 063700 008 Riyuetan Pool Road, Tangshan City Industrial Park, luanzhou, Hebei Patentee before: Tangzhou Dongtang Electric Equipment Co., Ltd. |