CN207896869U - A kind of high-power power transformation converter plant - Google Patents
A kind of high-power power transformation converter plant Download PDFInfo
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- CN207896869U CN207896869U CN201820294191.0U CN201820294191U CN207896869U CN 207896869 U CN207896869 U CN 207896869U CN 201820294191 U CN201820294191 U CN 201820294191U CN 207896869 U CN207896869 U CN 207896869U
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Abstract
The utility model discloses a kind of high-power power transformation converter plants, including converter plant ontology, the frequency converter main body includes novel rectifying phase-shifting transformer, power cell, control unit, input unit, display, output unit, remote communication unit and protection location, the input terminal of the novel rectifying phase-shifting transformer is connected to power grid, the output end of the novel rectifying phase-shifting transformer is connected to the input terminal of power cell, the output end of the power cell is connected to the input terminal of control unit, the output end of described control unit is connected to output unit, display and protection location, the remote communication unit is connected to the data-interface of control unit, the input terminal of described control unit is also connected to input unit, pre-charge circuit is equipped in the power cell.The utility model improves reliability and the safety of system, while its cost is also more cheap.
Description
Technical field
The utility model is related to a kind of converter plant, specially a kind of high-power power transformation converter plant.
Background technology
Current high-voltage high-power frequency transformator does not set low pressure precharge generally in upper electric control in rectification phase shifting transformer
Circuit, therefore switching device and current limiting element are must be provided in high-tension circuit part, to make power up complicate, Er Qiehui
Frequently by the dash current powered on, makes high-voltage high-power frequency transformator be very easy to generate failure, be greatly lowered in this way
The reliability of system.
Utility model content
The purpose of this utility model is to provide a kind of high-power power transformation converter plants, to solve to carry in above-mentioned background technology
The problem of going out.
To achieve the above object, the utility model provides the following technical solutions：A kind of high-power power transformation converter plant, including
Converter plant ontology, the converter plant main body include novel rectifying phase-shifting transformer, power cell, control unit, input list
The input terminal of member, display, output unit, remote communication unit and protection location, the novel rectifying phase-shifting transformer connects
It is connected to power grid, the output end of the novel rectifying phase-shifting transformer is connected to the input terminal of power cell, the power cell
Output end is connected to the input terminal of control unit, and the output end of described control unit is connected to output unit, display and protection
Unit, the remote communication unit are connected to the data-interface of control unit, and the input terminal of described control unit is also connected to defeated
Enter unit, is equipped with pre-charge circuit in the power cell, the pre-charge circuit includes three-phase half-controlled bridge-type rectification circuit, mistake
Absorbing circuit, flat wave inductance, high frequency capacitance and dc-link capacitance, the novel rectifying phase-shifting transformer is pressed to be connected to described
Overpressure absorbing circuit, the overpressure absorbing circuit are connected to the three-phase half-controlled bridge-type rectification circuit, the three-phase half-controlled bridge-type
For rectification circuit by being that three identical and parallel with one another branches are constituted, each branch route a thyristor and diode structure
At the other side of each thyristor side parallel connection RC absorbing circuits, each thyristor is parallel with charging circuit, the charging circuit
Including diode and resistance, the flat wave inductance is connected in series to three-phase half-controlled bridge-type rectification circuit, the other end of the flat wave inductance
It is connected to high frequency capacitance and dc-link capacitance, the hf bus capacitance and dc-link capacitance is in parallel and and three-phase half controlled bridge
Formula rectification circuit is in parallel.
Preferably, the novel rectifying phase-shifting transformer includes that high-tension coil, high voltage connector, low-voltage coil, low pressure connect
Tentaculum, current limiting element one, current limiting element two and current limiting element three, the high voltage connector is connected to high-tension coil, described low
Crimping tentaculum is connected to low-voltage coil, and current limiting element one, current limliting are in series between the lv contactor and the low-voltage coil
Element two and current limiting element three.
Preferably, including being three varistors, three varistors are connect the overpressure absorbing circuit using star-like
Method is interconnected to constitute.
Preferably, the remote communication unit is mobile phone or computer.
Preferably, the control chip of described control unit is C52 or PLC processor.
Compared with prior art, the utility model has the beneficial effects that：Improvement of the utility model to power cell, bright cloud
Three-phase half-controlled bridge-type rectification can be such that the dc-link capacitance in power cell is precharged to specified by the circuit of precharge
Voltage value, bus capacitor is damaged because bearing excessively high current instantaneous value when to avoid powering on, so as to cause entire list
First failure and he exits because improve reliability and the safety of system to the improvement of power cell, while its cost is also more
Cheap, in addition novel rectifying phase-shifting transformer first connects lv contactor in system electrification, and each power cell first carries out preliminary filling
Electricity is waited and is completed in power cell after the charging process of filter capacitor, then disconnects lv contactor and cut off pre-charge circuit, finally
High-voltage switch gear is closed, system is made to enter normal working condition, frequency converter electromechanics can be effectively reduced by changing pre-charge circuit in this way
The upper surge of net makes electric power loop obtain further, since the pre-charge circuit used does not need high-voltage switch gear in low-voltage circuit
Simplification has been arrived, good economy is made it have.
Description of the drawings
Fig. 1 is the block schematic illustration of the utility model；
Fig. 2 is the circuit diagram of the power cell of the utility model；
The circuit diagram of the novel rectifying phase-shifting transformer of Fig. 3 the utility model.
In figure：1, novel rectifying phase-shifting transformer；2, power cell；3, control unit；4, input unit；5, display；
6, output unit；7, remote communication unit；8, protection location；9, chip is controlled；10, three-phase half-controlled bridge-type rectification circuit；11, mistake
Press absorbing circuit；12, RC absorbing circuits；13, charging circuit；14, flat wave inductance；15, high frequency capacitance；16, dc-link capacitance；
17, high-tension coil；18, high voltage connector；19, low-voltage coil；20, lv contactor；21, current limiting element one；22, current limliting member
Part two；23, current limiting element three.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
- 2 are please referred to Fig.1, the utility model provides a kind of technical solution：
A kind of high-power power transformation converter plant, including converter plant ontology, the converter plant main body includes novel rectifying
Phase-shifting transformer 1, power cell 2, control unit 3, input unit 4, display 5, output unit 6, remote communication unit 7 and
The input terminal of protection location 8, the novel rectifying phase-shifting transformer 1 is connected to power grid, the novel rectifying phase-shifting transformer 1
Output end is connected to the input terminal of power cell 2, and the output end of the power cell 2 is connected to the input terminal of control unit 3, institute
The output end for stating control unit 3 is connected to output unit 6, display 5 and protection location 8, and the remote communication unit 7 is connected to
The input terminal of the data-interface of control unit 3, described control unit 3 is also connected to input unit 4, is set in the power cell 2
It includes three-phase half-controlled bridge-type rectification circuit 10, overpressure absorbing circuit 11, flat wave electricity to have pre-charge circuit, the pre-charge circuit
Sense 14, high frequency capacitance 15 and dc-link capacitance 16, the novel rectifying phase-shifting transformer 1 are connected to the overvoltage and absorb electricity
Road 11, the overpressure absorbing circuit 11 are connected to the three-phase half-controlled bridge-type rectification circuit 10, the three-phase half-controlled bridge-type rectification
Circuit 10 is by being that three identical and parallel with one another branches are constituted, and each branch route a thyristor and diode is constituted,
The other side of each thyristor side parallel connection RC absorbing circuits 12, each thyristor is parallel with charging circuit 13, the charging electricity
Road 13 includes diode and resistance, and the flat wave inductance 14 is connected in series to three-phase half-controlled bridge-type rectification circuit 10, the flat wave inductance
14 other end is connected to high frequency capacitance 15 and dc-link capacitance 16, and the high frequency capacitance 15 and dc-link capacitance 16 are in parallel
And it is in parallel with three-phase half-controlled bridge-type rectification circuit 10.
In the present embodiment, the novel rectifying phase-shifting transformer 1 includes high-tension coil 17, high voltage connector 18, low pressure
Coil 19, lv contactor 20, current limiting element 1, current limiting element 2 22 and current limiting element 3 23, the high voltage connector
18 are connected to high-tension coil 17, and the lv contactor 20 is connected to low-voltage coil 19, the lv contactor 20 with it is described low
Current limiting element 1, current limiting element 2 22 and current limiting element 3 23 are in series between crimping circle 19.
In the present embodiment, the overpressure absorbing circuit 11 including being three varistors, adopt by three varistors
It is interconnected to constitute with wye connection.
In the present embodiment, the remote communication unit 7 is mobile phone or computer.
In the present embodiment, the control chip 9 of described control unit 3 is C52 or PLC processor.
Operation principle：Improvement of the utility model to power cell 2 can using three-phase half-controlled bridge-type rectification circuit 10
The dc-link capacitance 16 in power cell is set to be precharged to load voltage value by the circuit of precharge, to avoid powering on
When bus capacitor damaged because bearing excessively high current instantaneous value, exited so as to cause entire cell failure, because right
The improvement of power cell improves reliability and the safety of system, while its cost is also more cheap, and in addition novel rectifying moves
Phase transformer 1 first connects lv contactor 20 in system electrification, and each advanced line precharge of power cell waits and completes power list
It in member after the charging process of filter capacitor, then disconnects lv contactor 20 and cuts off pre-charge circuit, finally close high-voltage switch gear
It closing, system is made to enter normal working condition, such pre-charge circuit can effectively reduce the upper surge of frequency converter electromechanics net, this
Outside, due to the use of pre-charge circuit in low-voltage circuit, do not need high-voltage switch gear, electric power loop made to be simplified, make its tool
There is good economy.
Although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art is come
Say, still can with technical scheme described in the above embodiments is modified, or to which part technical characteristic into
Row equivalent replacement, within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on should all
It is included within the scope of protection of this utility model.
Claims (5)
1. a kind of high-power power transformation converter plant, including converter plant ontology, it is characterised in that：The converter plant ontology includes
Novel rectifying phase-shifting transformer (1), power cell (2), control unit (3), input unit (4), display (5), output unit
(6), the input terminal of remote communication unit (7) and protection location (8), the novel rectifying phase-shifting transformer (1) is connected to electricity
The output end of net, the novel rectifying phase-shifting transformer (1) is connected to the input terminal of power cell (2), the power cell (2)
Output end be connected to the input terminals of control unit (3), the output end of described control unit (3) is connected to output unit (6), aobvious
Show that device (5) and protection location (8), the remote communication unit (7) are connected to the data-interface of control unit (3), the control
The input terminal of unit (3) is also connected to input unit (4), and pre-charge circuit, the precharge are equipped in the power cell (2)
Circuit include three-phase half-controlled bridge-type rectification circuit (10), overpressure absorbing circuit (11), flat wave inductance (14), high frequency capacitance (15) with
And dc-link capacitance (16), the novel rectifying phase-shifting transformer (1) are connected to the overpressure absorbing circuit (11), the mistake
Pressure absorbing circuit (11) is connected to the three-phase half-controlled bridge-type rectification circuit (10), the three-phase half-controlled bridge-type rectification circuit (10)
By being that three identical and parallel with one another branches are constituted, each branch route a thyristor and diode is constituted, Mei Gejing
The other side of brake tube side parallel connection RC absorbing circuits (12), each thyristor is parallel with charging circuit (13), the charging circuit
(13) include diode and resistance, the flat wave inductance (14) is connected in series to three-phase half-controlled bridge-type rectification circuit (10), the flat wave
The other end of inductance (14) is connected to high frequency capacitance (15) and dc-link capacitance (16), and the high frequency capacitance (15) and direct current are female
Line capacitance (16) is in parallel and in parallel with three-phase half-controlled bridge-type rectification circuit (10).
2. a kind of high-power power transformation converter plant according to claim 1, it is characterised in that：The novel rectifying phase shift becomes
Depressor (1) includes high-tension coil (17), high voltage connector (18), low-voltage coil (19), lv contactor (20), current limiting element one
(21), current limiting element two (22) and current limiting element three (23), the high voltage connector (18) are connected to high-tension coil (17), institute
It states lv contactor (20) and is connected to low-voltage coil (19), gone here and there between the lv contactor (20) and the low-voltage coil (19)
It is associated with current limiting element one (21), current limiting element two (22) and current limiting element three (23).
3. a kind of high-power power transformation converter plant according to claim 1, it is characterised in that：The overpressure absorbing circuit
(11) it is three varistors to include, and three varistors are interconnected to constitute using wye connection.
4. a kind of high-power power transformation converter plant according to claim 1, it is characterised in that：The remote communication unit
(7) it is mobile phone or computer.
5. a kind of high-power power transformation converter plant according to claim 1, it is characterised in that：Described control unit (3)
It is C52 or PLC processor to control chip (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820294191.0U CN207896869U (en) | 2018-03-02 | 2018-03-02 | A kind of high-power power transformation converter plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820294191.0U CN207896869U (en) | 2018-03-02 | 2018-03-02 | A kind of high-power power transformation converter plant |
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| Publication Number | Publication Date |
|---|---|
| CN207896869U true CN207896869U (en) | 2018-09-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201820294191.0U Active CN207896869U (en) | 2018-03-02 | 2018-03-02 | A kind of high-power power transformation converter plant |
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| CN (1) | CN207896869U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110716129A (en) * | 2019-11-12 | 2020-01-21 | 上海辛格林纳新时达电机有限公司 | High-voltage power unit test system |
-
2018
- 2018-03-02 CN CN201820294191.0U patent/CN207896869U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110716129A (en) * | 2019-11-12 | 2020-01-21 | 上海辛格林纳新时达电机有限公司 | High-voltage power unit test system |
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