CN201674407U - Three-phase four-wire variable-frequency sinusoid power supply device without partial discharge - Google Patents
Three-phase four-wire variable-frequency sinusoid power supply device without partial discharge Download PDFInfo
- Publication number
- CN201674407U CN201674407U CN2010202001078U CN201020200107U CN201674407U CN 201674407 U CN201674407 U CN 201674407U CN 2010202001078 U CN2010202001078 U CN 2010202001078U CN 201020200107 U CN201020200107 U CN 201020200107U CN 201674407 U CN201674407 U CN 201674407U
- Authority
- CN
- China
- Prior art keywords
- phase
- partial discharge
- unit
- circuit
- testing circuit
- 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
Links
- 230000007935 neutral effect Effects 0.000 claims abstract description 4
- 230000003321 amplification Effects 0.000 claims description 14
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 14
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 12
- 229910052710 silicon Inorganic materials 0.000 claims description 12
- 239000010703 silicon Substances 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 238000010586 diagram Methods 0.000 description 5
- 230000007812 deficiency Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Images
Landscapes
- Testing Relating To Insulation (AREA)
- Ac-Ac Conversion (AREA)
Abstract
A three-phase four-wire variable-frequency sinusoid power supply device without partial discharge comprises a three-phase rectification unit, a filter unit, an inverter unit and a zero line output. Protection units are respectively connected in series onto a positive electrode connection wire and a negative electrode connection wire between the rectification unit and the inverter unit, and the zero line output is connected with a neutral wire of the filter unit or connected with the inverter unit. The three-phase four-wire variable-frequency sinusoid power supply device has the advantages of small volume, light weight, simple and convenient debugging operation, capability of online updating and outputting sinusoidal wave parameters, and low noise.
Description
Technical field
The utility model relates to a kind of supply unit, especially relates to a kind of three-phase integrated transformer three-phase and responds to three-phase four-wire system no partial discharge frequency conversion sine-wave power device withstand voltage and that partial discharge test is used simultaneously.
Background technology
Along with electric power system is more and more higher to the reliability requirement of equipment, adopting variable frequency power supply to do local discharge test comes into one's own day by day, specification requirement is also more and more higher, before owing to have only single-phase variable frequency power supply, three-phase integrated transformer adopts three-phase separately to do local discharge test mostly, three-phase is separately done the on-the-spot practical operation situation that does not only meet three-phase integrated transformer, and can not reflect phase insulation, therefore need a kind of three phase frequency changing power, and be limited to technical difficulty, Dui Ying sinusoidal wave experimental facilities has only the three-phase three-wire system sine-wave power of only a few in the market, the shortcoming of three-phase three-wire system is, the sine wave output distortion seriously can not be satisfied test requirements document when threephase load is uneven.
The utility model content
The purpose of this utility model is to overcome deficiency of the prior art, provides a kind of and responds to withstand voltage simultaneously and three-phase four-wire system no partial discharge frequency conversion sine-wave power device partial discharge test to three-phase integrated transformer three-phase.
The purpose of this utility model is achieved by following technical proposals: comprise three phase rectifier unit, filter unit, inversion unit and zero line output; The protected location of respectively connecting on the both positive and negative polarity line between described filter unit and the inversion unit; Described zero line output connects the neutral line of filter unit or connects inversion unit.
Described inversion unit comprises a sinusoidal wave amplification module at least; Described sinusoidal wave amplification module comprises sine wave signal generator and power amplification circuit.
Adopt 100-1000 Darlington transistor parallel connection in the described power amplification circuit.
Described protected location comprises testing circuit, triggers drive circuit and controllable silicon; Described testing circuit is extremely in parallel with the silicon controlled input and output; Described triggering drive circuit is electrically connected with testing circuit and silicon controlled trigger electrode.
Compared with prior art, the utlity model has following advantage: volume is little, and is in light weight, and debugging operations is easy, without the base bias voltage of the unconventional and unrestrained Islington pipe of regulatory work, can online updating the sine wave parameter of output, noise is little.
Description of drawings
Fig. 1 is the electrical principle block diagram of the utility model one embodiment;
Fig. 2 is the electrical principle block diagram of protected location embodiment illustrated in fig. 1;
Fig. 3 is the sinusoidal wave amplification module electrical principle block diagram of inversion unit embodiment illustrated in fig. 1;
Fig. 4 is a kind of enforcement circuit structure diagram of the utility model;
Fig. 5 is the another kind of circuit structure diagram of implementing of the utility model.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples:
With reference to accompanying drawing 1-3, present embodiment comprises three phase rectifier unit, filter unit, inversion unit and zero line output; The protected location of respectively connecting on the both positive and negative polarity line between described filter unit and the inversion unit; Described zero line is exported the neutral line of optional connection filter unit, also optional connection inversion unit.
Described inversion unit comprises a sinusoidal wave amplification module; Described sinusoidal wave amplification module comprises sine wave signal generator and power amplification circuit.
In the described power amplification circuit, adopt 100-1000 Darlington transistor parallel connection.In accompanying drawing 3,3 the Darlington transistor parallel connections of only drawing, and omitted bypass and biasing circuit.
Described protected location comprises testing circuit, triggers drive circuit and controllable silicon; Described testing circuit is extremely in parallel with the silicon controlled input and output; Described triggering drive circuit is electrically connected with testing circuit and silicon controlled trigger electrode.In accompanying drawing 3, S1, S2 are connected on the positive pole or negative pole line between filter unit and the inversion unit, and S3 connects inversion unit, and whether the variation that is used for detecting load exceeds normal value.
Described three phase rectifier unit, filter unit, string wave generator, power amplification circuit, testing circuit, triggering drive circuit adopt ripe prior art.
In the accompanying drawing, A, B, C represent the input of three-phase alternating current, and X, Y, Z represent the output of three-phase alternating current, and N represents zero line output.
Fig. 4, Fig. 5 implement two kinds of particular circuit configurations figure of the present utility model.Reference in the time of can supplying to implement the utility model.
Claims (5)
1. a three-phase four-wire system no partial discharge frequency conversion sine-wave power device comprises three phase rectifier unit, filter unit, inversion unit and zero line output; It is characterized in that: the protected location of respectively connecting on the both positive and negative polarity line between described filter unit and the inversion unit; Described zero line output connects the neutral line of filter unit or connects inversion unit.
2. three-phase four-wire system no partial discharge frequency conversion sine-wave power device according to claim 1, it is characterized in that: described inversion unit comprises a sinusoidal wave amplification module at least; Described sinusoidal wave amplification module comprises sine wave signal generator and power amplification circuit.
3. three-phase four-wire system no partial discharge frequency conversion sine-wave power device according to claim 1 and 2 is characterized in that: adopt 100-1000 Darlington transistor parallel connection in the described power amplification circuit.
4. three-phase four-wire system no partial discharge frequency conversion sine-wave power device according to claim 1 and 2; it is characterized in that: described protected location comprises testing circuit, triggers drive circuit and controllable silicon; described testing circuit is extremely in parallel with the silicon controlled input and output, and described triggering drive circuit is electrically connected with testing circuit and silicon controlled trigger electrode.
5. three-phase four-wire system no partial discharge frequency conversion sine-wave power device according to claim 3; it is characterized in that: described protected location comprises testing circuit, triggers drive circuit and controllable silicon; described testing circuit is extremely in parallel with the silicon controlled input and output, and described triggering drive circuit is electrically connected with testing circuit and silicon controlled trigger electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202001078U CN201674407U (en) | 2010-05-24 | 2010-05-24 | Three-phase four-wire variable-frequency sinusoid power supply device without partial discharge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202001078U CN201674407U (en) | 2010-05-24 | 2010-05-24 | Three-phase four-wire variable-frequency sinusoid power supply device without partial discharge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201674407U true CN201674407U (en) | 2010-12-15 |
Family
ID=43331814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202001078U Expired - Fee Related CN201674407U (en) | 2010-05-24 | 2010-05-24 | Three-phase four-wire variable-frequency sinusoid power supply device without partial discharge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201674407U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104201872A (en) * | 2014-07-24 | 2014-12-10 | 南阳防爆集团电气系统工程有限公司 | Topology circuit for mining frequency converter |
-
2010
- 2010-05-24 CN CN2010202001078U patent/CN201674407U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104201872A (en) * | 2014-07-24 | 2014-12-10 | 南阳防爆集团电气系统工程有限公司 | Topology circuit for mining frequency converter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201910746U (en) | Three-phase four-leg inverter device | |
| CN103605002A (en) | Harmonic impedance measurement apparatus of electric power system | |
| CN102624016B (en) | Bidirectional energy flowing flow battery energy storage grid connection device and control method thereof | |
| CN202872325U (en) | Direct current grounding detection protection device used for photovoltaic power generation system | |
| CN102354942A (en) | High-pressure DC (direct current) ice melting device | |
| CN204886186U (en) | Hybrid Control System Based on Harmonic Suppression and Reactive Power Compensation | |
| CN201674407U (en) | Three-phase four-wire variable-frequency sinusoid power supply device without partial discharge | |
| CN106501691A (en) | Portable high-pressure transducer power unit comprehensive detection device | |
| CN103743931B (en) | A kind of high-power grid voltage simulation circuit | |
| CN103353566B (en) | Battery for mimic channel equipment testing circuit in place | |
| CN203166522U (en) | Active harmonic suppression device | |
| CN107623379A (en) | A system and method for port ship connection to shore power based on voltage difference envelope | |
| CN203554322U (en) | Novel sine wave inverter | |
| CN203054062U (en) | AC voltage signal detection circuit | |
| CN202444427U (en) | Single-phase-and-three-phase-in-one variable-frequency sinusoid power supply device without partial discharge | |
| CN203026921U (en) | Detection circuit for imbalance of parallel output current of inverters | |
| CN204122335U (en) | For the digital imaging system generator that Welded residual stress is eliminated | |
| CN202939210U (en) | Apparatus used for detecting voltage and phase of low-voltage three-phase transformer | |
| CN104659803A (en) | Photovoltaic networking system device | |
| CN201204436Y (en) | Electrical leakage detection protection device for solar photovoltaic parallel inverter | |
| CN203057004U (en) | Power supply converter capable of raising electric product power factor | |
| CN203811677U (en) | Inverter voltage zero-crossing point detection circuit | |
| CN204732881U (en) | The compensation arrangement that a kind of quality of power supply is energy-conservation | |
| CN203278266U (en) | Solar photovoltaic grid-connected system | |
| CN202435034U (en) | Mixing active electric power filtering apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHANGSHA SANYOU INSTRUMENT EQUIPMENT CO., LTD. Free format text: FORMER OWNER: WAN WANGLONG Effective date: 20120514 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20120514 Address after: 410013 torch city M3, hi tech Development Zone, Changsha, Hunan, Yuelu District Patentee after: CHANGSHA SANYOU INSTRUMENT EQUIPMENT CO., LTD. Address before: 410013 M6 group 1, torch City, Changsha hi tech Development Zone, Hunan 101, China Patentee before: Wan Wanglong Effective date of registration: 20120514 Address after: 410013 torch city M3, hi tech Development Zone, Changsha, Hunan, Yuelu District Patentee after: CHANGSHA SANYOU INSTRUMENT EQUIPMENT CO., LTD. Address before: 410013 M6 group 1, torch City, Changsha hi tech Development Zone, Hunan 101, China Patentee before: Wan Wanglong |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101215 Termination date: 20190524 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |