CN2666010Y - Device for eliminating harmonic - Google Patents
Device for eliminating harmonic Download PDFInfo
- Publication number
- CN2666010Y CN2666010Y CN 200320105861 CN200320105861U CN2666010Y CN 2666010 Y CN2666010 Y CN 2666010Y CN 200320105861 CN200320105861 CN 200320105861 CN 200320105861 U CN200320105861 U CN 200320105861U CN 2666010 Y CN2666010 Y CN 2666010Y
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- CN
- China
- Prior art keywords
- harmonic
- grid
- utility
- model
- protective device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to harmonic eliminating equipment to reduce grid harmonic and improve electric energy quality and is applied in electric railway, metallurgy, coal, mining and other industries which employs a plurality of nonlinear equipment causing high subharmonic and comprises a main knife switch, a magnetic switch, a reactor, a capacitor, an automatic control device, an over-current protective device, an over-voltage protective device and a zero-sequence protective device. The utility model is characterized in that the three groups of the reactor and a capacitor in series are adopted to filter high subharmonic in the grid. The harmonic eliminating equipment of the utility model guarantees secure and stable running of the grid. Taking the steel-making enterprise in metallurgy industry for example, the application of the utility model fully improves power factor, decreases reactive power and shortens steel making circle and for the filtering of the harmonic purifies the grid, improves electric energy transmission quality, ensures reliable electricity use, and avoids equipment damages and other accidents caused by fluctuation of grid voltage or instability of current.
Description
Technical field
The utility model relates to and a kind ofly is applied to that electric railway, metallurgy, coal, mining etc. are a large amount of to be used non-linear equipment and produce the industry of high order harmonic component, reduces mains by harmonics to disturb, and improves the Device for eliminating harmonic of the quality of power supply of electrical network.
Background technology
At present, it is bigger that the domestic electrical network quality of power supply is influenced by metallurgical industry, because the sector is widely applied equipment such as height, middle frequency furnace, arc furnace, when loading on operation, these inject harmonic wave to electrical network, electrical network is produced pollution, voltage waveform is distorted, disturb the function of other load of electrical network, even initiating failure, main is the safe and stable operation of serious harm electrical network.Resolve the reactive power compensation and the harmonic wave governing problem of electrical network, to guarantee power grid quality, reduce the wastage, improve the power equipment ability, increasing economic efficiency all is significant.
Summary of the invention
The utility model has overcome the problem of above-mentioned existence, and purpose is for guaranteeing the safe and stable operation of electrical network, a kind of Device for eliminating harmonic is provided, solved the reactive power compensation and the harmonic wave governing problem of electrical network, guaranteeing power grid quality, reduce the wastage, improve the power equipment ability.
The utility model Device for eliminating harmonic content Description:
The utility model Device for eliminating harmonic; form by operator switch, magnetic switch, reactor, capacitor, self-con-tained unit, overcurrent protective device, over-pressure safety device, zero sequence protection device; it is characterized in that: adopt three groups of reactors and capacitors in series resonance, leach higher Harmonics in Electric Power Network.
The utility model Device for eliminating harmonic, the safe and stable operation of assurance electrical network is an example with the metallurgy industry steel-making enterprise, improves power factor, reactive power reduction, has shortened the steel-making cycle.Owing to leached harmonic current, purified electrical network fully, improve the conveying quality of electric energy, guaranteed the electricity consumption reliability, avoided owing to voltage ripple of power network, electric current instability cause unexpected generations such as device damage.
Description of drawings
Fig. 1 is the Device for eliminating harmonic structured flowchart
Embodiment
The utility model Device for eliminating harmonic is achieved in that to do below in conjunction with accompanying drawing and specifies.See Fig. 1; operator switch, magnetic switch are set in the utility model Device for eliminating harmonic; reactor, capacitor, self-con-tained unit, overcurrent protective device, over-pressure safety device, zero sequence protection device, the operator switch series is associated in the circuit, and its effect is to make the electric loop of this equipment that tangible cut-off point be arranged.Magnetic switch is connected in the circuit, and the effect of catering to is automatically arranged.But for making this equipment automatic shutoff circuit when overvoltage, overcurrent, the zero sequence overcurrent; protection equipment is provided with over-pressure safety device, overcurrent protective device, zero sequence protection device; it is characterized in that: adopted three groups of reactors and capacitors in series; when the high order harmonic component of certain frequency is passed through; reach resonance by adjusting induction reactance and capacitive reactance; this high order harmonic component is passed through, leached higher Harmonics in Electric Power Network.
Claims (1)
1, a kind of Device for eliminating harmonic; form by operator switch, magnetic switch, reactor, capacitor, self-con-tained unit, overcurrent protective device, over-pressure safety device, zero sequence protection device; it is characterized in that: adopt three groups of reactors and capacitors in series resonance, leach higher Harmonics in Electric Power Network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320105861 CN2666010Y (en) | 2003-12-05 | 2003-12-05 | Device for eliminating harmonic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320105861 CN2666010Y (en) | 2003-12-05 | 2003-12-05 | Device for eliminating harmonic |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2666010Y true CN2666010Y (en) | 2004-12-22 |
Family
ID=34341382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320105861 Expired - Fee Related CN2666010Y (en) | 2003-12-05 | 2003-12-05 | Device for eliminating harmonic |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2666010Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170155253A1 (en) | 2014-06-20 | 2017-06-01 | General Electric Company | System and method of power control for an energy storage charging station |
-
2003
- 2003-12-05 CN CN 200320105861 patent/CN2666010Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170155253A1 (en) | 2014-06-20 | 2017-06-01 | General Electric Company | System and method of power control for an energy storage charging station |
| US10520966B2 (en) | 2014-06-20 | 2019-12-31 | General Electric Company | System and method of power control for an energy storage charging station |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |