CN212646955U - Excitation system field suppression switch separating brake coil broken string detection device - Google Patents
Excitation system field suppression switch separating brake coil broken string detection device Download PDFInfo
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- CN212646955U CN212646955U CN202021261083.7U CN202021261083U CN212646955U CN 212646955 U CN212646955 U CN 212646955U CN 202021261083 U CN202021261083 U CN 202021261083U CN 212646955 U CN212646955 U CN 212646955U
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Abstract
The utility model discloses an excitation system switch separating brake coil broken string detection device that goes out is applicable to any excitation system. The device mainly comprises an excitation source, a control unit, a main coil detection unit and a standby coil detection unit. The excitation source provides a stable and reliable 24V power supply, and the main coil detection unit and the standby coil detection unit are respectively connected with the main brake separating coil and the standby brake separating coil of the de-excitation switch. When an excitation source is put into use and the coil detection unit has no current feedback, the coil disconnection fault is reported to the terminal. The device can also control whether the device is put into use, and meanwhile, a brake separating signal locking device of the de-excitation switch can be connected to protect the device. The utility model has the advantages of being simple in structure and convenient in operation, with low costs, occupation space is little, adds disconnected wire detection device's excitation system, improves excitation system de-excitation switch's reliability, prevents that generator trouble de-excitation switch can not reliably divide the branch to de-excite and lead to taking place the serious accident.
Description
Technical Field
The utility model relates to a generator excitation system especially relates to an excitation system field switch separating brake coil broken string detection device.
Background
In a generator excitation system, a field-suppression switch has the main function of quickly disconnecting field suppression in case of generator accidents. The reliable breaking of the breaking coil of the field switch plays an important role in protecting the generator in case of generator accidents. If the brake-separating coil of the de-excitation switch can not complete the brake-separating action when the generator has an accident, the generator will be seriously affected. Therefore, the disconnection detection of the brake separating coil of the magnetic quenching switch can prevent serious accidents caused by the fact that the magnetic quenching switch cannot be disconnected.
The utility model discloses an increase the broken string detection device of one set of separating brake coil on the switch return circuit that goes out, can detect the main of switch that goes out respectively, reserve separating brake coil whether broken string. The disconnection fault of the switch-off coil of the field-suppression switch can be timely found and processed, and the fault that the generator is seriously burnt due to the fact that the field-suppression switch cannot be reliably disconnected when an actual accident happens is prevented.
Disclosure of Invention
The utility model aims at disclosing a simple structure, small, practical reliable excitation system switch separating brake coil broken string detection device that goes out.
The utility model adopts the technical proposal that: the device is composed of an excitation source (1), a control unit (2), a main coil detection unit (3), a standby coil detection unit (4), a main coil (5) of a magnetic-quenching switch and a standby coil (6) of the magnetic-quenching switch, wherein the output of the excitation source (1) is connected to the control unit (2), the output of the control unit (2) is respectively connected to the main coil detection unit (3) and the standby coil detection unit (4), and the output of the main coil detection unit (3) and the output of the standby coil detection unit (4) are connected to the main coil (5) of the magnetic-quenching switch and the standby coil (6) of the magnetic-quenching switch.
Principle of operation
The excitation source (1) is input into the control unit (2), the control unit (2) respectively provides 24V excitation sources for the main coil detection unit (3) and the standby coil detection unit (4) through external control, the main coil detection unit (3) and the standby coil detection unit (4) directly output to the main coil (5) of the de-excitation switch and the standby coil (6) of the de-excitation switch, and meanwhile received current feedback signals judge the state of the coils through current detection relays of the main coil detection unit (3) and the standby coil detection unit (4), and if the coils are broken, output alarm signals are led out to terminals of the main coil detection unit (3) and the standby coil detection unit (4).
Technical effects
1. The utility model has the characteristics of simple structure, convenient operation, low cost and the like.
2. The utility model discloses when throwing into, can detect whether broken string is separated brake coil and reserve separating brake coil of demagnetization switch respectively to draw forth through external alarm terminal signal.
3. The utility model discloses occupation space is little, and the circuit is simple, compares no broken string detection device's excitation system, improves excitation system de-excitation switch's reliability, prevents that generator trouble de-excitation switch can not reliably divide the branch to de-excite and lead to taking place serious accident.
Drawings
FIG. 1 is a schematic diagram of a breaking detection device for a switch-off coil of a field-extinguishing switch of an excitation system
Detailed Description
As shown in fig. 1, a broken line detection device for a brake separating coil of a field suppression switch of an excitation system. The device comprises an excitation source 1, a control unit 2, a main coil detection unit 3, a standby coil detection unit 4, a main coil 5 of a magnetic quenching switch and a standby coil 6 of the magnetic quenching switch, wherein the output of the excitation source 1 is connected to the control unit 2, the output of the control unit 2 is respectively connected to the main coil detection unit 3 and the standby coil detection unit 4, and the output of the main coil detection unit 3 and the standby coil detection unit 4 is connected to the main coil 5 of the magnetic quenching switch and the standby coil 6 of the magnetic quenching switch.
The excitation source 1 provides a reliable and stable 24V excitation source for the switching-off coil of the magnetic-quenching switch, and whether the detection function is put into operation or not can be controlled by the control unit 2. If the device is put into operation, the excitation source is respectively input to the main opening coil 5 and the spare opening coil 6 of the de-excitation switch through the main coil detection unit 3 and the spare coil detection unit 4. When the excitation source is input into the main brake-separating coil 5 and the standby brake-separating coil 6, if the coils are not broken, current signals are fed back to the current detection relays in the main coil detection unit 3 and the standby coil detection unit 4, and whether the coils are broken or not is judged according to the current signals. And after the coil is detected to be broken, an alarm signal is sent out and led out to the terminals of the main coil detection unit 3 and the standby coil detection unit 4.
Finally, the scope of protection of the present invention is not limited to the embodiments described above. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the scope or spirit of the invention. It is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.
Claims (1)
1. The utility model provides an excitation system field switch separating brake coil disconnection detection device which characterized by: the device is composed of an excitation source (1), a control unit (2), a main coil detection unit (3), a standby coil detection unit (4), a main coil (5) of a magnetic-quenching switch and a standby coil (6) of the magnetic-quenching switch, wherein the output of the excitation source (1) is connected to the control unit (2), the output of the control unit (2) is respectively connected to the main coil detection unit (3) and the standby coil detection unit (4), and the output of the main coil detection unit (3) and the output of the standby coil detection unit (4) are connected to the main coil (5) of the magnetic-quenching switch and the standby coil (6) of the magnetic-quenching switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021261083.7U CN212646955U (en) | 2020-07-02 | 2020-07-02 | Excitation system field suppression switch separating brake coil broken string detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021261083.7U CN212646955U (en) | 2020-07-02 | 2020-07-02 | Excitation system field suppression switch separating brake coil broken string detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212646955U true CN212646955U (en) | 2021-03-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021261083.7U Active CN212646955U (en) | 2020-07-02 | 2020-07-02 | Excitation system field suppression switch separating brake coil broken string detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212646955U (en) |
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2020
- 2020-07-02 CN CN202021261083.7U patent/CN212646955U/en active Active
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