CN202602281U - Device for controlling switching of damping resistor in resonant grounding system - Google Patents
Device for controlling switching of damping resistor in resonant grounding system Download PDFInfo
- Publication number
- CN202602281U CN202602281U CN 201220213291 CN201220213291U CN202602281U CN 202602281 U CN202602281 U CN 202602281U CN 201220213291 CN201220213291 CN 201220213291 CN 201220213291 U CN201220213291 U CN 201220213291U CN 202602281 U CN202602281 U CN 202602281U
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- resistance
- controller
- resistor
- secondary winding
- resonant
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Abstract
The utility model discloses a device for controlling switching of a damping resistor in a resonant grounding system. The device comprises a voltage transformer, a resistor controller used for switching, and an arc extinguishing coil secondary winding used for providing power to the resistor controller. The arc extinguishing coil secondary winding is in series connection with the damping resistor through the resistor controller. An output terminal of the voltage transformer is connected to an input terminal of the resistor controller. When the grounding faults occur to the resonant grounding system, an arc extinguishing coil in the resonant grounding system is electrified, power is provided by electric quantity of the arc extinguishing coil to the resistor controller through the arranged arc extinguishing coil secondary winding, thereby guaranteeing stability and reliability of power supplied to the resistor controller, and preventing extra power of the resistor controller from being lost to cause a problem of ferromagnetic resonance once the grounding faults occur to the resonant grounding system. The device for controlling switching of the damping resistor in the resonant grounding system can be widely applied to the field of an electrical system.
Description
Technical field
The utility model relates to electrical technology, relates in particular to the device of control damp resistance throw-cut in a kind of resonant earthed system.
Background technology
At present in the scheme of arc suppression coil secondary side and damping resistance; The device that is used for damping resistance is carried out switching is the extra power modules of needs; But because the problem that second-rate, its life-span of additional power supply module is short and damping resistance can cause ferro resonance in the process of resonator system earth fault when the additional power supply dead electricity; Therefore reduce stability, reliability and the fail safe of resonant earthed system operation greatly, bring harm for resonant earthed system easily.
The utility model content
In order to solve the problems of the technologies described above, the purpose of the utility model provides the device of control damp resistance throw-cut in a kind of simple in structure and resonant earthed system that accuracy is high.
The technical scheme that the utility model adopted is: the device of control damp resistance throw-cut in a kind of resonant earthed system; The arc suppression coil secondary winding that comprises voltage transformer, is used for the resistance controller of switching and is used to resistance controller power supply, the output that said arc suppression coil secondary winding is in series with the damping resistance voltage transformer through resistance controller is connected to the input of resistance controller.
Further, said resistance controller is provided with the relay switch that receives voltage transformer control, and said arc suppression coil secondary winding is connected with damping resistance through relay switch.
The beneficial effect of the utility model is: during resonant earthed system generation earth fault; Arc suppression coil in the resonant earthed system is charged; And the electric weight of arc suppression coil band supplies power through the arc suppression coil secondary winding that is provided with and then for resistance controller, so just can guarantee resistance controller, the stability of its power supply and reliability; When avoiding occurring in resonant earthed system generation earth fault, thereby the additional power supply dead electricity of resistance controller causes the problem of ferro resonance.
Description of drawings
Be described further below in conjunction with the embodiment of accompanying drawing the utility model:
Fig. 1 is the structural representation of the device of control damp resistance throw-cut in a kind of resonant earthed system of the utility model;
Fig. 2 is the resonant earthed system sketch map that the device of control damp resistance throw-cut in a kind of resonant earthed system of the utility model inserts resonant earthed system.
Embodiment
By illustrated in figures 1 and 2; The device of control damp resistance throw-cut in a kind of resonant earthed system; The arc suppression coil secondary winding 1 that comprises voltage transformer, is used for the resistance controller of switching and is used to the resistance controller power supply; Said arc suppression coil secondary winding 1 is in series with damping resistance R through resistance controller, and the output of voltage transformer is connected to the input of resistance controller.Because arc suppression coil secondary winding 1 is the resistance controller power supply, so the power end of resistance controller is connected with arc suppression coil secondary winding 1.
Further as preferred embodiment, said resistance controller is provided with the relay switch that receives voltage transformer control, and said arc suppression coil secondary winding 1 is connected with damping resistance R through relay switch.Receive voltage transformer control during said relay switch, the process of its control is that relay switch will break off when certain specific voltage of voltage transformer output; And then switching damping resistance R; Otherwise relay switch will be closed, and then make damping resistance R insert resonant earthed system.
The embodiment of the utility model does, after the arc suppression coil secondary winding 1 of the utility model inserts resonant earthed system with voltage transformer, when resonant earthed system earth fault does not take place; Arc suppression coil L is not charged; Be arc suppression coil secondary winding 1 can't to obtain energy from arc suppression coil L be the resistance controller power supply, promptly resistance controller can't operate as normal, at this moment; The relay switch of resistance controller is closed, and promptly resonant earthed system is incorporated damping resistance R into; Arc suppression coil L is charged when resonant earthed system generation earth fault; And the arc suppression coil secondary winding 1 with a constant volume is the resistance controller power supply after arc suppression coil L obtains energy; Be thereby that resistance controller can obtain operating voltage and carries out operate as normal; Thereby the voltage that inserts the voltage transformer output of resonant earthed system simultaneously breaks off the relay switch of resistance controller realizes switching damping resistance R; Promptly damping resistance R does not insert resonant earthed system when resonant earthed system generation earth fault, and then avoids causing the ferro resonance problem, therefore improves the stability and the reliability of resonant earthed system so greatly.Said arc suppression coil L is a controlled reactor.
More than be that preferable enforcement to the utility model specifies; But the utility model is created and is not limited to said embodiment; Those of ordinary skill in the art make all equivalent variations or replacement under the prerequisite of the utility model spirit, also can doing, and distortion that these are equal to or replacement all are included in the application's claim institute restricted portion.
Claims (2)
1. the device of control damp resistance throw-cut in the resonant earthed system; It is characterized in that: the arc suppression coil secondary winding (1) that comprises voltage transformer, is used for the resistance controller of switching and is used to the resistance controller power supply; Said arc suppression coil secondary winding (1) is in series with damping resistance (R) through resistance controller, and the output of voltage transformer is connected to the input of resistance controller.
2. according to the device of controlling damp resistance throw-cut in the said a kind of resonant earthed system of claim 1; It is characterized in that: said resistance controller is provided with the relay switch that receives voltage transformer control, and said arc suppression coil secondary winding (1) joins through relay switch and damping resistance (R) consecutive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220213291 CN202602281U (en) | 2012-05-14 | 2012-05-14 | Device for controlling switching of damping resistor in resonant grounding system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220213291 CN202602281U (en) | 2012-05-14 | 2012-05-14 | Device for controlling switching of damping resistor in resonant grounding system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202602281U true CN202602281U (en) | 2012-12-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220213291 Expired - Fee Related CN202602281U (en) | 2012-05-14 | 2012-05-14 | Device for controlling switching of damping resistor in resonant grounding system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202602281U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106385020A (en) * | 2016-11-24 | 2017-02-08 | 河北工业大学 | Quasi-zero transient switching damping resistor controller |
-
2012
- 2012-05-14 CN CN 201220213291 patent/CN202602281U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106385020A (en) * | 2016-11-24 | 2017-02-08 | 河北工业大学 | Quasi-zero transient switching damping resistor controller |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: GUANGDONG ZHONGYU TECHNOLOGY CO., LTD. Free format text: FORMER NAME: ZHONGYU SCIENCE + TECHNOLOGY CO., LTD., GUANGDONG |
|
| CP03 | Change of name, title or address |
Address after: 510000 Guangdong city of Guangzhou province Panyu District zhongcunzhen Pingshan Village (office building No. 2) Patentee after: GUANGDONG ZHONGYU TECHNOLOGY CO., LTD. Address before: A street in Guangdong city of Guangzhou province Panyu District 511495 cliff Street Xinghong Patentee before: Zhongyu Science & Technology Co., Ltd., Guangdong |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121212 Termination date: 20180514 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |