CN202940580U - Wave-stabilizing and current-discharging apparatus - Google Patents
Wave-stabilizing and current-discharging apparatus Download PDFInfo
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- CN202940580U CN202940580U CN 201220679329 CN201220679329U CN202940580U CN 202940580 U CN202940580 U CN 202940580U CN 201220679329 CN201220679329 CN 201220679329 CN 201220679329 U CN201220679329 U CN 201220679329U CN 202940580 U CN202940580 U CN 202940580U
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Abstract
The utility model relates to an apparatus applied to an electric power system and especially relates to a wave-stabilizing and current-discharging apparatus for removing abnormal current harmonic waves. The wave-stabilizing and current-discharging apparatus provided by the utility model comprises a discharge loop and a band-pass filtering loop, wherein the band-pass filtering loop comprises a capacitor and an inductor connected with each other in series; and the discharge loop comprises an MOV component level, a gas discharge tube and an avalanche diode, the MOV component level and the gas discharge tube are connected with each other in series, the avalanche diode is connected with the gas discharge tube in parallel. The wave-stabilizing and current-discharging apparatus provided by the utility model can utilize the band-pass filtering loop to filter the abnormal current harmonic waves, and abnormal current is discharged to the ground by the discharge loop. The apparatus can effectively remove harm on electric power devices because of thunder, other abnormal current and the harmonic waves of the abnormal current, has a simple structure and relatively strong practicality.
Description
Technical field
The utility model relates to a kind of device that is applied to electric power system, particularly a kind of steady ripple discharge device of removing the abnormal current harmonic wave.
Background technology
The quality of electricity has very large impact to the safe operation of Substation control equipment, and the power supply quality deterioration can cause the efficient of power consumption equipment and power factor to reduce, and causes communication distortion or mistake, increases its loss, the appearance of the relevant issues such as the lost of life.And the good and bad degree of the electric energy quality of supply arrangement is weighed with indexs such as voltage, frequency and waveforms usually.Ideally, electric power system should be with constant industrial frequency (50 Hz) and sinusoidal waveform, voltage levvl in accordance with regulations is to customer power supply, but the problem that often can occur sinusoidal wave distortion, voltage fluctuation and flickering, harmonic group and harmonic wave coupling etc. on supply network, the deviation of mains frequency, harmonic content, three-phase imbalance and voltage fluctuation and flickering etc., all moment and the heating of equipment be can directly affect, thereby production effect and product quality affected; The increase of mains by harmonics content will cause the power equipment lost of life, and network loss strengthens, and the possibility of system's generation resonance increases, and may cause relaying protection and automatics malfunction simultaneously, and instrument indication and watt metering are forbidden and the series of problems such as Communication Jamming.Simultaneously large voltage and large electric current produce direct device damage, have also brought a large amount of harmonic groups.With regard to thunder and lightning, its produces large voltage and large electric current simultaneously, has also produced a large amount of electromagnetic environments and Lightning Electromagnetic Pulse (LEMP), and on the 100KHZ frequency the very large harmonic group of produce power, direct or indirect harm the use of electrical network.
Summary of the invention
For the infringement of the abnormal current harmonic waves such as solution thunder and lightning to power equipment, the utility model proposes a kind of steady ripple discharge device that abnormal large current drain can be gone out.
For reaching the purpose of this utility model, the following technical scheme that the utility model provides is.
Steady ripple discharge device described in the utility model comprises discharge loop and bandpass filtering loop, and described bandpass filtering loop is electric capacity and the inductance of series connection mutually; Described discharge loop comprises the gentle body discharge tube of MOV minute magnitude of mutual series connection, and the snowslide diode in parallel with gas discharge tube.
Preferably, the filtering bandwidth in described bandpass filtering loop is 100-200HZ.
Preferably, described discharge loop is multichannel discharge loop parallel with one another.
Further preferably, described discharge loop is three road discharge loops.
Steady ripple discharge device of the present utility model can utilize bandpass filtering loop filtering abnormal current harmonic wave, and this abnormal current is extremely underground by the discharge loop earial drainage, the utility model can effectively be removed the abnormal currents such as thunder and lightning and harmonic wave thereof to the harm of power equipment, and simple in structure, practicality is stronger.
Description of drawings
Fig. 1 is the circuit connection diagram of embodiment 1.
In figure: 1-bandpass filtering loop; The 2-discharge loop.
Embodiment
Embodiment 1.
A kind of steady ripple discharge device that the utility model provides comprises discharge loop 2 and bandpass filtering loop 1, and wherein bandpass filtering loop 1 comprises electric capacity and the inductance of mutual series connection; Discharge loop 2 comprises the gentle body discharge tube of MOV minute magnitude of mutual series connection, and the snowslide diode in parallel with gas discharge tube, and the filtering bandwidth in bandpass filtering described in the utility model loop 1 is 100-200HZ.
When the abnormal signals such as large electric current come interim, instantaneous voltage is larger, discharge loop 2 is transient switching element separately rapidly, realize earial drainage, voltage or the electric current that can make different directions arrive can obtain rapid earial drainage, the abnormal harmonic wave (8/20 μ s, 10/350 μ s) that produces because of thunder and lightning simultaneously can from bandpass filtering loop 1, will be released into the earth in the current harmonics between 100-200HZ.
The present embodiment is substantially the same manner as Example 1, difference is that the described discharge loop 2 of the present embodiment has three the tunnel, be connected in parallel mutually, when large electric current comes interim, three road discharge loops 2 are the conducting release current rapidly, standby effect can be played in this three tunnel loop simultaneously, and riches all the way gives birth to damage in case have, and other several roads all can work on.
Claims (4)
1. steady ripple discharge device, comprise discharge loop (2) and bandpass filtering loop (1), it is characterized in that: described bandpass filtering loop (1) is electric capacity and the inductance of series connection mutually; Described discharge loop (2) comprises the gentle body discharge tube of MOV minute magnitude of mutual series connection, and the snowslide diode in parallel with gas discharge tube.
2. steady ripple discharge device as claimed in claim 1, it is characterized in that: the filtering bandwidth in described bandpass filtering loop (1) is 100-200HZ.
3. steady ripple discharge device as claimed in claim 1, it is characterized in that: described discharge loop (2) is multichannel discharge loop (2) parallel with one another.
4. steady ripple discharge device as claimed in claim 3, it is characterized in that: described discharge loop (2) is three road discharge loops (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220679329 CN202940580U (en) | 2012-12-11 | 2012-12-11 | Wave-stabilizing and current-discharging apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220679329 CN202940580U (en) | 2012-12-11 | 2012-12-11 | Wave-stabilizing and current-discharging apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202940580U true CN202940580U (en) | 2013-05-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220679329 Expired - Fee Related CN202940580U (en) | 2012-12-11 | 2012-12-11 | Wave-stabilizing and current-discharging apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202940580U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111697896B (en) * | 2019-03-12 | 2023-08-01 | Abb瑞士股份有限公司 | Method for controlling a multiphase motor |
-
2012
- 2012-12-11 CN CN 201220679329 patent/CN202940580U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111697896B (en) * | 2019-03-12 | 2023-08-01 | Abb瑞士股份有限公司 | Method for controlling a multiphase motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130515 Termination date: 20151211 |
|
| EXPY | Termination of patent right or utility model |