CN207764330U - It is a kind of that the fully loaded test system of frequency converter is realized using SVG - Google Patents
It is a kind of that the fully loaded test system of frequency converter is realized using SVG Download PDFInfo
- Publication number
- CN207764330U CN207764330U CN201820191810.3U CN201820191810U CN207764330U CN 207764330 U CN207764330 U CN 207764330U CN 201820191810 U CN201820191810 U CN 201820191810U CN 207764330 U CN207764330 U CN 207764330U
- Authority
- CN
- China
- Prior art keywords
- frequency converter
- svg
- fully loaded
- reacance generator
- test system
- 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.)
- Active
Links
Landscapes
- Ac-Ac Conversion (AREA)
- Inverter Devices (AREA)
Abstract
The a kind of of the utility model realizes the fully loaded test system of frequency converter, including supply line using SVG（1）, frequency converter to be tested（3）And host computer or HMI（5）, power supply of the supply line to frequency converter；It is characterized in that：Further include reacance generator SVG（4）, the output end of frequency converter is connected with reacance generator SVG, and reacance generator SVG is through voltage transformer pt（6）Or phase detecting circuit obtains the phase of frequency converter output voltage, reacance generator SVG makes frequency converter reach full-load run by adjusting the output current of itself；Host computer or HMI are communicated with frequency converter and reacance generator SVG.Since inverter load is SVG, and SVG mainly consume it is idle, it is idle mainly in SVG and frequency converter inner exchanging, the characteristics of will not feeding back in power grid, therefore the active consumption very little of whole system, make it have simple in structure, easy to operate, small power consumption.
Description
Technical field
The utility model is related to the test systems that a kind of frequency converter is fully loaded with, more specifically, more particularly to a kind of using SVG
Realize the fully loaded test system of frequency converter.
Background technology
Frequency converter is typically necessary before manufacture and carries out long-time full load test, and it is full that its object is to test frequency converters
Whether each function is normal in the case of load, as whether thermal stability of the frequency converter under high-power be normal.It can as test frequency converter
By an important ring for property, there is the method that full load test much is carried out to frequency converter at present.
Such as the Chinese utility model patent of Patent No. CN201220260394.0, a kind of full load test method is given,
This method uses power grid-frequency converter-motor generator-electric network composition, frequency converter to convert electrical energy into machinery by motor
Can, it is converted into electric energy feedback to power grid by motor later.Since larger and structure being lost during electric energy is converted
Complexity, this method is inefficient, and can inject a large amount of reactive powers to power grid.
The Chinese utility model patent of Patent No. CN201210407764.3 gives a kind of full load test method, should
Method uses power grid-frequency converter-reactor-electric network composition, frequency converter output directly to arrive electric energy feedback by grid-connected reactor
In power grid, there is higher efficiency, but the controller of frequency converter needs to replace original frequency converter using cutting-in control algorithm
Control algolithm, and need improvement control system to increase power cell Pressure and Control for high-voltage cascade frequency converter, these
Additional sampling and control module, it is complicated, often influence frequency converter script structure.This method at home substantially can only be simultaneously
50Hz power grids are netted, the frequency converter of particular frequencies output can not be tested with carrying.
The Chinese utility model patent of Patent No. CN201410272821.0 gives a kind of full load test method, the party
Method uses the grid-connected reactor-electric network composition of power grid-step-up transformer-frequency converter-, frequency converter output direct by grid-connected reactor
Feed back in power grid, step-up transformer capacity has to be larger than transducer power in this method, therefore to step-up transformer require compared with
It is high；And for low voltage frequency converter, embedded cutting-in control module may increase frequency converter volume in control circuit.
Invention content
The shortcomings that the utility model is in order to overcome above-mentioned technical problem provides a kind of fully loaded using SVG realization frequency converters
Test system.
The fully loaded test system of frequency converter is realized using SVG involved by the utility model, including supply line, to be tested
Frequency converter and host computer or HMI, supply line is connected through isolation circuit with the input terminal of frequency converter, to realize supply lines
Power supply of the road to frequency converter；It is characterized in that：Further include reacance generator SVG, output end and the reacance generator SVG of frequency converter
It is connected, reacance generator SVG obtains the phase of frequency converter output voltage through voltage transformer pt or phase detecting circuit, idle
Generator SVG makes frequency converter reach full-load run by adjusting the output current of itself；Host computer or HMI and frequency converter and idle
Generator SVG is communicated.
The fully loaded test system of frequency converter is realized using SVG involved by the utility model, described be fully loaded with refers to frequency converter
Output current reaches the electric current of full load.
Realize that the fully loaded test system of frequency converter, the isolation circuit are used and connect using SVG involved by the utility model
Tentaculum KM.
The fully loaded test system of frequency converter is realized using SVG involved by the utility model, the frequency converter be high pressure, in
Pressure or low voltage frequency converter, the voltage class of the reacance generator SVG are consistent with frequency converter.
The fully loaded test system of frequency converter, the host computer or HMI and change are realized using SVG involved by the utility model
Frequency device and reacance generator SVG are communicated through RS485 buses.
The fully loaded test system of frequency converter is realized using SVG involved by the utility model, the reacance generator SVG is certainly
With grid-connected reactor.
The utility model has the beneficial effects that：The utility model realizes the fully loaded test system of frequency converter, tool using SVG
There is the characteristics of simple in structure, easy to operate, small power consumption.In major loop mainly include two equipment of frequency converter to be measured and SVG, into
When row major loop is built, it is only necessary to frequency converter input side be accessed power grid by disconnecting switch, outlet side is connected with SVG；Become
Frequency device output voltage frequency can be adjusted in a small range, be suitable for 50Hz/60Hz power grids, be become by controlling SVG electric currents and realizing
Frequency device full load test；Since inverter load is SVG, and SVG mainly consume it is idle, it is idle mainly inside SVG and frequency converter
It exchanges, will not feed back in power grid, therefore the active consumption very little of whole system, simultaneously because frequency converter power factor itself is very
Height will not cause grid entry point power factor low.
Description of the drawings
Fig. 1 is the schematic diagram that the fully loaded test system of frequency converter is realized using SVG of the utility model；
Fig. 2 is the flow chart that the fully loaded test method of frequency converter is realized using SVG of the utility model.
In figure：1 supply line, 2 isolation circuits, 3 frequency converters, 4 reacance generator SVG, 5 host computers or HMI, 6 voltages are mutual
Sensor PT.
Specific implementation mode
The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings.
As shown in Figure 1, the schematic diagram that the fully loaded test system of frequency converter is realized using SVG of the utility model is given,
It is by supply line 1, isolation circuit 2, frequency converter 3, reacance generator SVG（4）, host computer or HMI（5）Composition, supply line 1
Power supply, input terminal phase of the three-phase power line through isolation circuit 2 with frequency converter 3 of supply line 1 are provided for frequency converter 3 to be tested
Connection, isolation circuit 2 control the break-make electricity condition of frequency converter 3, and contactor KM can be used.The three-phase of frequency converter 3 is defeated
Outlet with respectively with reacance generator SVG（4）Three output ends be connected, using SVG export 3 nominal operation of frequency converter when
Electric current, so that frequency converter 3 is in fully loaded working condition.
Reacance generator SVG（4）Through voltage transformer pt（6）Or phase detecting circuit obtains the three-phase that frequency converter 3 exports
The phase of voltage, SVG export corresponding electric current by the voltage-phase detected, to realize idle output, and can guarantee frequency conversion
Device 3 is in full-load run state.
Shown host computer or HMI（Human-computer interaction interface）Through communication line and frequency converter 3 and reacance generator SVG（4）It communicates
Letter, host computer or HMI（5）By the communication with frequency converter 3, the unlatching of frequency converter 3 can not only be run, state out of service
It is controlled, but also can the operating parameter of frequency converter 3 be set and be obtained the parameter of frequency converter, such as to frequency converter 3
Output voltage amplitude, frequency etc. set, obtain the rated voltage and rated current of frequency converter 3.Host computer or HMI（5）
By the communication with SVG, the rated current of frequency converter 3 can be sent to SVG, so that SVG outputs meet 3 full-load run of frequency converter
Rated current.
Frequency converter 3 is high pressure, middle pressure or low voltage frequency converter, to ensure the matching of frequency converter 3 and SVG, reacance generator SVG
（4）Voltage class it is consistent with frequency converter 3.Host computer or HMI（5）RS485 buses and frequency converter 3 and idle generation can be used
Device SVG（4）It communicates.Reacance generator SVG（4）Carry grid-connected reactor.
As shown in Fig. 2, the flow chart that the fully loaded test method of frequency converter is realized using SVG of the utility model is given,
It is realized by following steps：
A) equipment connect, supply line is connected through isolation circuit with the input terminal of frequency converter, by frequency converter and it is defeated
Outlet is connected with the output end of reacance generator SVG, and SVG reference voltage ends and voltage transformer pt or phase-detection is electric
The output end on road is connected, and finally host computer or HMI are connected through communication line with frequency converter, SVG；
B) acquisition and setting of parameters, host computer or HMI obtain the specified electricity of frequency converter by the communication with frequency converter
Pressure and full-load current, and the full-load current numerical value of acquisition is sent to SVG；
C) the operation control of frequency converters, the input terminal of supply line and frequency converter is connected, become by controlling isolation circuit
Frequency device exports the rated voltage of setpoint frequency under the control of host computer or HMI；
D) job control of .SVG, the voltage-phase for the three phase mains that reacance generator SVG is exported by acquisition frequency converter,
Output meets the rated current of frequency converter nominal operation, so that frequency converter is run in a fully loaded state；
E) full-load runs are tested, and frequency converter is kept to be run in a fully loaded state to the period of setting, and to frequency converter
Index parameter is detected, to judge whether it meets the condition of full-load run.
Since inverter load is SVG, and SVG mainly consume it is idle, it is idle mainly in SVG and frequency converter inner exchanging,
It will not feed back in power grid, therefore the active consumption very little of whole system, simultaneously because frequency converter power factor itself is very high, also not
The characteristics of grid entry point power factor can be caused low, make it have simple in structure, easy to operate, small power consumption.
Claims (6)
1. a kind of realizing the fully loaded test system of frequency converter, including supply line using SVG（1）, frequency converter to be tested（3）With
And host computer or HMI（5）, supply line is through isolation circuit（2）It is connected with the input terminal of frequency converter, to realize supply line pair
The power supply of frequency converter；It is characterized in that：Further include reacance generator SVG（4）, output end and the reacance generator SVG of frequency converter
It is connected, reacance generator SVG is through voltage transformer pt（6）Or phase detecting circuit obtains the phase of frequency converter output voltage,
Reacance generator SVG makes frequency converter reach full-load run by adjusting the output current of itself；Host computer or HMI and frequency converter and
Reacance generator SVG is communicated.
2. according to claim 1 realize the fully loaded test system of frequency converter using SVG, it is characterised in that：It is described fully loaded
It refer to the electric current that output current of frequency converter reaches full load.
3. according to claim 1 realize the fully loaded test system of frequency converter using SVG, it is characterised in that：The isolation
Circuit（2）Using contactor KM.
4. according to claim 1 realize the fully loaded test system of frequency converter using SVG, it is characterised in that：The frequency conversion
Device（3）For high pressure, middle pressure or low voltage frequency converter, the reacance generator SVG（4）Voltage class it is consistent with frequency converter.
5. according to claim 1 realize the fully loaded test system of frequency converter using SVG, it is characterised in that：It is described upper
Machine or HMI（5）With frequency converter（3）With reacance generator SVG（4）Communicated through RS485 buses.
6. according to claim 1 realize the fully loaded test system of frequency converter using SVG, it is characterised in that：It is described idle
Generator SVG（4）Carry grid-connected reactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820191810.3U CN207764330U (en) | 2018-02-05 | 2018-02-05 | It is a kind of that the fully loaded test system of frequency converter is realized using SVG |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820191810.3U CN207764330U (en) | 2018-02-05 | 2018-02-05 | It is a kind of that the fully loaded test system of frequency converter is realized using SVG |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207764330U true CN207764330U (en) | 2018-08-24 |
Family
ID=63179798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820191810.3U Active CN207764330U (en) | 2018-02-05 | 2018-02-05 | It is a kind of that the fully loaded test system of frequency converter is realized using SVG |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207764330U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108169605A (en) * | 2018-02-05 | 2018-06-15 | 新风光电子科技股份有限公司 | A kind of test system and method being fully loaded with using SVG realization frequency converters |
-
2018
- 2018-02-05 CN CN201820191810.3U patent/CN207764330U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108169605A (en) * | 2018-02-05 | 2018-06-15 | 新风光电子科技股份有限公司 | A kind of test system and method being fully loaded with using SVG realization frequency converters |
| CN108169605B (en) * | 2018-02-05 | 2023-09-08 | 新风光电子科技股份有限公司 | Test system and method for realizing full load of frequency converter by SVG |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104505848A (en) | Energy storage power supply device on basis of distributed energy AC (Alternating Current) and DC (Direct Current) hybrid access | |
| CN103296696B (en) | Inverter and control method thereof | |
| CN111313527A (en) | Method for controlling power balance of direct current micro-grid system | |
| EP3925050A1 (en) | System and method for managing power | |
| CN201698006U (en) | Automatic adjustable resistive electronic load | |
| CN110865252B (en) | Output electric characteristic simulation device of proton exchange membrane fuel cell and control method thereof | |
| Zhou et al. | Static state power smoothing and transient power quality enhancement of a DC microgrid based on multi-function SMES/battery distributed hybrid energy storage system | |
| CN207764330U (en) | It is a kind of that the fully loaded test system of frequency converter is realized using SVG | |
| CN102116850B (en) | Device and method for testing rectifier | |
| CN111404248A (en) | Micro-grid system and method based on coupling of fuel cell test and charging pile | |
| CN203312829U (en) | Inverter capable of smoothly switching between grid-off mode and grid-connected mode | |
| CN104348179A (en) | Control method for light direct current transmission system | |
| CN202134923U (en) | Deep charging and discharging type battery energy storage paralleling device | |
| CN108169605A (en) | A kind of test system and method being fully loaded with using SVG realization frequency converters | |
| Xu et al. | Discussion on the factors affecting the stability of microgrid based on distributed power supply | |
| CN209803302U (en) | Fuel cell test system capable of efficiently utilizing electric energy | |
| CN202817886U (en) | Uninterruptible power source | |
| CN207910525U (en) | A kind of pure electric vehicle AC power output system device peculiar to vessel | |
| Li et al. | An Adaptive Coordinated Constant Voltage Control Method Considering Power Margin for Parallel Bidirectional Power Converters in AC/DC Hybrid Microgrid | |
| CN111404184A (en) | Fuel cell test and electric vehicle charging coupling system and control method | |
| Eid | Stand-alone DC micro-grids: analysis and control | |
| Kashyap et al. | Ancillary Services And Stability Analysis Of Distributed Generation System | |
| Guo et al. | Overview of improved droop control methods of hybrid AC/DC microgrid interlinking converter | |
| CN217133331U (en) | Low-power consumption energy storage PCS experiment platform | |
| CN220190471U (en) | Terminal low voltage of low voltage distribution network administers device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |