CN202333804U - Novel intelligent resonance elimination device - Google Patents
Novel intelligent resonance elimination device Download PDFInfo
- Publication number
- CN202333804U CN202333804U CN2011204532644U CN201120453264U CN202333804U CN 202333804 U CN202333804 U CN 202333804U CN 2011204532644 U CN2011204532644 U CN 2011204532644U CN 201120453264 U CN201120453264 U CN 201120453264U CN 202333804 U CN202333804 U CN 202333804U
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- China
- Prior art keywords
- resonance
- voltage transformers
- novel intelligent
- harmonic elimination
- cpu
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
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Abstract
The utility model provides a novel intelligent resonance elimination device which comprises a CPU (central processing unit) main board, three voltage transformers and a resonance elimination circuit board, wherein the three voltage transformers are mutually inductive; the resonance elimination circuit board is connected among three angles of openings of the three voltage transformers; the resonance elimination circuit board is provided with a controllable switch and a non-linear resistor; one end of the controllable switch is sequentially and electrically connected to the other end of the controllable switch via one of the three voltage transformers and the non-linear resistor; a controlled end of the controllable switch is electrically connected to the CPU main board, and is disconnected or closed under the control of the CPU main board; and the other of the three voltage transformers is electrically connected to a power grid. The novel intelligent harmonic elimination device rapidly and accurately implements Fourier analysis by adopting a CPU so as to determine single-phase grounding or power grid resonance, if resonance exists, a command is sent out so as to enable a resonance elimination circuit to be input, energy supplied by a power supply is consumed, and ferromagnetic resonance overvoltage is inhibited.
Description
Technical field
The utility model relates to field of power electronics, relates in particular to a kind of novel intelligent harmonic elimination apparatus.
Background technology
In 3-35 kilovolts of three-phase electrical power systems, owing to the electric capacity coupling of the nonlinear inductance of voltage transformer and line-to-ground causes the ferro resonance overvoltage, the operation of direct threats electric power system seriously can cause the voltage transformer blast, causes the accident.To above-mentioned situation, more domestic producers have successively developed some frequency division harmonic elimination apparatus, and the principle of these devices all is to adopt the principle of simulation frequency-selecting, and function singleness is only effective to the resonance of single-frequency.Because in the electrical network is that multiple frequency exists simultaneously, so its ecad is poor, the transient process of electrical network also can cause malfunction sometimes.
The utility model content
In view of this, the utility model provides a kind of novel intelligent harmonic elimination apparatus, is intended to solve the problem that there is the resonance overvoltage of generation simultaneously in multiple frequency in the electric power system, can distinguish resonance, overvoltage, single-phase earthing, prevents malfunction.
A kind of novel intelligent harmonic elimination apparatus; It comprises cpu motherboard, three voltage transformers that interact and is connected the harmonic elimination circuit board between said three voltage transformer open deltas; Said harmonic elimination circuit board is provided with gate-controlled switch and nonlinear resistance; One end of said gate-controlled switch electrically connects via one in said three voltage transformers, said nonlinear resistance and in the other end of said gate-controlled switch successively; The controlled end of said gate-controlled switch is electrically connected at said cpu motherboard and under the control of said cpu motherboard, breaks off with closed, and another person in said three voltage transformers is electrically connected at electrical network.
As the further improvement of such scheme, said novel intelligent harmonic elimination apparatus also is provided with the warning circuit that electrically connects with said cpu motherboard.
Compare with traditional intelligent harmonic elimination apparatus, the novel intelligent harmonic elimination apparatus that the utility model provides adopts CPU to realize Fourier analysis fast and accurately; Judge that single-phase earthing still is an electrical network resonance, resonance sends instruction and makes harmonic elimination circuit input in this way; The energy that electric consumption is supplied with suppresses ferro-resonance over-voltage, thereby discerns and eliminate the ferro resonance of different frequency in the electric power system automatically; Report to the police simultaneously and export, can distinguish resonance, overvoltage, single-phase earthing, prevent malfunction.
Description of drawings
Fig. 1 is the circuit diagram of the novel intelligent harmonic elimination apparatus that provides of the utility model preferred embodiments.
Symbol description
| The novel intelligent |
100 |
| |
10 |
| Voltage transformer | PT |
| The harmonic |
30 |
| Gate-controlled switch | KM |
| Nonlinear resistance | |
| Warning circuit | |
| 40 |
Embodiment
For the purpose, technical scheme and the advantage that make the utility model is clearer,, the utility model is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
See also Fig. 1; The circuit diagram of the novel intelligent harmonic elimination apparatus 100 that it provides for the utility model preferred embodiments, novel intelligent harmonic elimination apparatus 100 comprise cpu motherboard 10, three voltage transformer pts that interact and are connected three harmonic elimination circuit boards 30 between the voltage transformer pt open delta.
The harmonic elimination circuit board is established 30 and is equipped with gate-controlled switch KM and nonlinear resistance FR; The end of gate-controlled switch KM electrically connects via one in three voltage transformer pts, nonlinear resistance FR and in the other end of gate-controlled switch KM successively; The controlled end of gate-controlled switch KM is electrically connected at cpu motherboard 10 and under the control of cpu motherboard 10, breaks off with closed, and another person in three voltage transformer pts is electrically connected at electrical network.
Novel intelligent harmonic elimination apparatus 100 adopts CPU to realize Fourier analysis fast and accurately, judges that single-phase earthing still is an electrical network resonance; Resonance in this way; Send instruction and make harmonic elimination circuit input, the energy that electric consumption is supplied with suppresses ferro-resonance over-voltage; Thereby discern and eliminate the ferro resonance of different frequency in the electric power system automatically; Report to the police simultaneously and export (novel intelligent harmonic elimination apparatus 100 also is provided with the warning circuit 40 that electrically connects with cpu motherboard 10), can distinguish resonance, overvoltage, single-phase earthing, prevent malfunction.
In this execution mode, warning circuit 40 is not arranged on cpu motherboard 10, but electrically connects as external form and cpu motherboard 10, and in other embodiments, warning circuit 40 can also be set directly on the cpu motherboard 10.
The above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; Any modification of being done within all spirit and principles at the utility model, be equal to replacement and improvement etc., all should be included within the protection range of the utility model.
Claims (2)
1. novel intelligent harmonic elimination apparatus; It is characterized in that; It comprises cpu motherboard, three voltage transformers that interact and is connected the harmonic elimination circuit board between said three voltage transformer open deltas; Said harmonic elimination circuit board is provided with gate-controlled switch and nonlinear resistance; One end of said gate-controlled switch electrically connects via one in said three voltage transformers, said nonlinear resistance successively and in the other end of said gate-controlled switch, the controlled end of said gate-controlled switch is electrically connected at said cpu motherboard and under the control of said cpu motherboard, breaks off and closure, and another person in said three voltage transformers is electrically connected at electrical network.
2. novel intelligent harmonic elimination apparatus as claimed in claim 1 is characterized in that, said novel intelligent harmonic elimination apparatus also is provided with the warning circuit that electrically connects with said cpu motherboard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204532644U CN202333804U (en) | 2011-11-16 | 2011-11-16 | Novel intelligent resonance elimination device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204532644U CN202333804U (en) | 2011-11-16 | 2011-11-16 | Novel intelligent resonance elimination device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202333804U true CN202333804U (en) | 2012-07-11 |
Family
ID=46445770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204532644U Expired - Fee Related CN202333804U (en) | 2011-11-16 | 2011-11-16 | Novel intelligent resonance elimination device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202333804U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104466941A (en) * | 2014-12-24 | 2015-03-25 | 国家电网公司 | Combined resonance eliminating device suitable for 4PT |
| CN111614095A (en) * | 2020-04-20 | 2020-09-01 | 国网新疆电力有限公司阿克苏供电公司 | Resonance overvoltage treatment device and treatment method |
-
2011
- 2011-11-16 CN CN2011204532644U patent/CN202333804U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104466941A (en) * | 2014-12-24 | 2015-03-25 | 国家电网公司 | Combined resonance eliminating device suitable for 4PT |
| CN111614095A (en) * | 2020-04-20 | 2020-09-01 | 国网新疆电力有限公司阿克苏供电公司 | Resonance overvoltage treatment device and treatment method |
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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: 20120711 Termination date: 20141116 |
|
| EXPY | Termination of patent right or utility model |