CN107390125A - A kind of system for being used to start wind-driven generator low-voltage crossing experimental rig - Google Patents
A kind of system for being used to start wind-driven generator low-voltage crossing experimental rig Download PDFInfo
- Publication number
- CN107390125A CN107390125A CN201710790669.9A CN201710790669A CN107390125A CN 107390125 A CN107390125 A CN 107390125A CN 201710790669 A CN201710790669 A CN 201710790669A CN 107390125 A CN107390125 A CN 107390125A
- Authority
- CN
- China
- Prior art keywords
- determination module
- driven generator
- experimental rig
- output end
- wind
- 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.)
- Granted
Links
- 238000002474 experimental method Methods 0.000 description 9
- 238000012360 testing method Methods 0.000 description 8
- 230000005611 electricity Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
- G01R31/343—Testing dynamo-electric machines in operation
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Control Of Eletrric Generators (AREA)
- Tests Of Circuit Breakers, Generators, And Electric Motors (AREA)
Abstract
This application discloses a kind of system for being used to start wind-driven generator low-voltage crossing experimental rig, including：Current transformer, voltage transformer, signal conditioner, first determination module, second determination module and result display module, current transformer is connected with voltage transformer, current transformer is connected with signal conditioner, voltage transformer is connected with signal conditioner, first determination module is connected with signal conditioner, second determination module is connected with signal conditioner, first determination module is connected with the second determination module, result display module is connected with the second determination module, the system for being used to start wind-driven generator low-voltage crossing experimental rig instead of the manually startup to wind-driven generator low-voltage crossing experimental rig, it is time saving and energy saving.
Description
Technical field
The application is related to wind-power electricity generation detection field, more particularly to a kind of for starting the experiment of wind-driven generator low-voltage crossing
The system of device.
Background technology
Low voltage crossing, referring to when wind-driven generator grid entry point Voltage Drop, wind-driven generator can keep grid-connected,
Certain reactive power even is provided to power network, supports power system restoration, until power system restoration is normal, so as to " passing through " this low electricity
Press the time (region).It is to start under being avoided in the situation of grid voltage sags that wind-driven generator, which possesses low voltage ride-through capability,
Machine adversely affects with grid disconnection to net stabilization.
In order to detect the low voltage ride-through capability of wind-driven generator, a variety of wind-driven generator low-voltage crossing examinations are developed
Experiment device, according to NB/T31051-2014《Low voltage ride-through capability of wind turbine generator system test procedure》It is required that when wind power generating set has
Power output is respectively in (1) maximum power output p>0.9Pn；(2) (p is exported 0.1Pn≤p≤0.3Pn for the wind-driven generator moment
Power, Pn wind-driven generators rated power) under conditions of carry out, current wind-driven generator low-voltage crossing experimental rig, all must
The change of testing crew observation generator power output is wanted, starts wind-driven generator low-voltage crossing experimental rig manually,
Whole process is caused to take time and effort.
The content of the invention
This application provides a kind of system for being used to start wind-driven generator low-voltage crossing experimental rig, to solve artificial side
Formula starts the problem of wind-driven generator low-voltage crossing experimental rig.
A kind of system for being used to start wind-driven generator low-voltage crossing experimental rig, including：Current transformer, mutual induction of voltage
Device, signal conditioner, the first determination module, the second determination module and result display module, wherein,
The current transformer is connected with the voltage transformer；
The current transformer is connected with the signal conditioner, and the voltage transformer connects with the signal conditioner
Connect；
First determination module is connected with the signal conditioner；
Second determination module is connected with the signal conditioner；
First determination module is connected with second determination module；
The result display module is connected with second determination module.
Optionally, first determination module includes the first analog-digital converter, the first level translator and first calculates
Comparison circuit, wherein,
The input of first analog-digital converter is connected with the output end of the signal conditioner；
The output end of first analog-digital converter is connected with the input of first level translator；
The output end of first level translator is connected with the input of the described first calculating comparison circuit；
The output end of the first calculating comparison circuit is connected with second determination module.
Optionally, second determination module includes the second analog-digital converter, second electrical level converter, the second calculating ratio
Compared with circuit, digital analog converter and power amplifier, wherein,
The input of second analog-digital converter is connected with the output end of the signal conditioner；
The output end of second analog-digital converter is connected with the input of the second electrical level converter；
The output end of the second electrical level converter is connected with the input of the described second calculating comparison circuit；
The output end of the second calculating comparison circuit is connected with the input of the digital analog converter；
The output end of the digital analog converter is connected with the input of the power amplifier；
The output end of the power amplifier is connected with the result display module.
Optionally, the result display module includes relay, signal lamp and resistance, wherein,
The coil of the relay is connected with second determination module；
A pair of normally opened contacts, the signal lamp and the resistant series of the relay.
Optionally, be provided with the first CAN transceiver in first determination module, first CAN transceiver with it is described
First calculates comparison circuit connection.
Optionally, be provided with the second CAN transceiver in second determination module, second CAN transceiver with it is described
Second calculates comparison circuit connection.
From above technical scheme, it is used to start wind-driven generator low-voltage crossing experimental rig this application provides one kind
System, the current transformer and the voltage transformer send the current signal collected and voltage signal to the letter
Number conditioner, electric quantity signal is modulated into after weak electric signal by the signal conditioner to be sent to first determination module and described
Second determination module, first determination module and second determination module are calculated and sentenced to the weak electric signal received
Fixed, result of calculation meets experimental condition, and enabling signal is sent to wind-driven generator low-voltage crossing and tried by first determination module
Experiment device, result of calculation are unsatisfactory for experimental condition, continue to gather signal, described to be used to start until result meets experimental condition
The system of wind-driven generator low-voltage crossing experimental rig instead of the manually startup to wind-driven generator low-voltage crossing experimental rig,
It is time saving and energy saving.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme of the application, letter will be made to the required accompanying drawing used in embodiment below
Singly introduce, it should be apparent that, for those of ordinary skills, without having to pay creative labor,
Other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of structural representation for being used to start the system of wind-driven generator low-voltage crossing experimental rig of the application；
Fig. 2 is a kind of the first determination module for being used to start the system of wind-driven generator low-voltage crossing experimental rig of the application
Structural representation；
Fig. 3 is a kind of the second determination module for being used to start the system of wind-driven generator low-voltage crossing experimental rig of the application
Structural representation；
Fig. 4 is a kind of result display module for being used to start the system of wind-driven generator low-voltage crossing experimental rig of the application
Structural representation；
Fig. 5 is a kind of process for using figure for being used to start the system of wind-driven generator low-voltage crossing experimental rig of the application.
Illustrate：
Wherein, 1- current transformers；2- voltage transformers；3- signal conditioners；The determination modules of 4- first；5- second judges
Module；6- result display modules；The analog-digital converters of 8- first；The level translators of 9- first；10- first calculates comparison circuit；11-
Second analog-digital converter；12- second electrical level converters；13- second calculates comparison circuit；14- digital analog converters；15- power is put
Big device；16- relays；17- signal lamps；18- resistance；The CAN transceivers of 20- first；The CAN transceivers of 21- second.
Embodiment
Referring to Fig. 1, for a kind of structural representation for being used to start the system of wind-driven generator low-voltage crossing experimental rig, bag
Include：Current transformer 1, voltage transformer 2, signal conditioner 3, the first determination module 4, the second determination module 5 and result are shown
Module 6, wherein,
The current transformer 1 is connected with the voltage transformer 2, and the current transformer 1 is used for the electricity that will be collected
Stream signal is sent to the signal conditioner 3, and the voltage transformer 2 is used to send the voltage signal collected to the letter
Number conditioner 3；
The current transformer 1 is connected with the signal conditioner 3, the voltage transformer 2 and the signal conditioner 3
Connection；
First determination module 4 is connected with the signal conditioner 3, and first determination module 4 is adjusted with the signal
To enter the interaction of row information between reason device 3, first determination module 4 is used to compare startup power and the size of realtime power,
The signal conditioner 3 is used for current signal and voltage signal modulation into weak current signal and weak voltage signal；
Second determination module 5 is connected with the signal conditioner 3, and second determination module 5 is used for more specified
The size of power and realtime power；
First determination module 4 is connected with second determination module 5；
The result display module 6 is connected with second determination module 5, and the result display module 6, which is used to show, to be tried
Test result.
From above technical scheme, it is used to start wind-driven generator low-voltage crossing experimental rig this application provides one kind
System, the current transformer 1 and the voltage transformer 2 send the current signal collected and voltage signal to described
Signal conditioner 3, the signal conditioner 3 are sent to first determination module 4 after electric quantity signal is modulated into weak electric signal
With second determination module 5, first determination module 4 and second determination module 5 enter to the weak electric signal received
Row is calculated and judged, result of calculation meets experimental condition, and first determination module 4 sends enabling signal to wind-driven generator
Low-voltage crossing experimental rig, result of calculation are unsatisfactory for experimental condition, continue to gather signal, until result meets experimental condition, institute
State and instead of manually to the experiment of wind-driven generator low-voltage crossing for starting the system of wind-driven generator low-voltage crossing experimental rig
The startup of device, it is time saving and energy saving.
Referring to Fig. 2, for the application it is a kind of be used to starting the first of the system of wind-driven generator low-voltage crossing experimental rig sentence
The structural representation of cover half block, optionally, first determination module 4 include the first analog-digital converter 8, the first level conversion
Device 9 and first calculates comparison circuit 10, wherein,
The input of first analog-digital converter 8 is connected with the output end of the signal conditioner 3, first modulus
Converter 8 is used to the analog signal received being converted into data signal；
The output end of first analog-digital converter 8 is connected with the input of first level translator 9；
The output end of first level translator 9 is connected with the input of the described first calculating comparison circuit 10；
The first calculating comparison circuit 10 includes the first output end and the second output end, and described first calculates comparison circuit
10 the first output end is connected with second determination module 5, and the second output end of the first calculating comparison circuit 10 will open
The signal of dynamic wind-driven generator low-voltage crossing experimental rig is sent to wind-driven generator low-voltage crossing experimental rig；
The first calculating comparison circuit 10 is used to calculate realtime power and be compared realtime power and startup power
Compared with.
Referring to Fig. 3, for the application it is a kind of be used to starting the second of the system of wind-driven generator low-voltage crossing experimental rig sentence
The structural representation of cover half block, optionally, second determination module 5 includes the second analog-digital converter 11, second electrical level turns
Parallel operation 12, second calculates comparison circuit 13, digital analog converter 14 and power amplifier 15, wherein,
The input of second analog-digital converter 11 is connected with the output end of the signal conditioner 3；
The output end of second analog-digital converter 11 is connected with the input of the second electrical level converter 12；
The output end of the second electrical level converter 12 is connected with the input of the described second calculating comparison circuit 13；
The output end of the second calculating comparison circuit 13 is connected with the input of the digital analog converter 14, described
Second, which calculates comparison circuit 13, calculates realtime power and by realtime power compared with rated power；
The output end of the digital analog converter 14 is connected with the input of the power amplifier 15；
The output end of the power amplifier 15 is connected with the result display module 6, and the power amplifier 15 is used for
Trigger relay 16 is so as to controlling the signal lamp 17.
Referring to Fig. 4, show for a kind of result of system for starting wind-driven generator low-voltage crossing experimental rig of the application
Show the structural representation of module, optionally, the result display module 6 includes relay 16, signal lamp 17 and resistance
18, wherein,
The coil of the relay 16 is connected with second determination module 5；
A pair of normally opened contacts, the signal lamp 17 and the resistance 18 of the relay 16 are connected.
Optionally, be provided with the first CAN transceiver 20 in first determination module 4, first CAN transceiver 20 and
The first calculating comparison circuit 10 connects, and first CAN transceiver 20 is used to carry out information exchange with terminal device.
Optionally, be provided with the second CAN transceiver 21 in second determination module 5, second CAN transceiver 21 and
The second calculating comparison circuit 13 connects, and second CAN transceiver 21 is used to carry out information exchange with terminal device.
Referring to Fig. 5, for a kind of use stream for being used to start the system of wind-driven generator low-voltage crossing experimental rig of the application
Cheng Tu, it is as follows using step：
S1, the startup power of wind-driven generator is arranged to Ps, rated power is arranged to Pn, and startup interval time is arranged to
T, it is 1s that time delay, which is arranged to Δ t, T 30min, Δ t, and when experiment is high-power experiment model, Ps is arranged into Ps>
0.91Pn, when experiment is small-power test model, Ps is arranged to Ps=0.11Pn；
S2, the current transformer 1 gather current signal I in wind-driven generator exit, and the voltage transformer 2 is in wind
Power generator exit collection voltages signal U, the current transformer 1 and the voltage transformer 2 send out the signal collected
Deliver in the signal conditioner 3, the signal conditioner 3 nurses one's health the current signal I received and voltage signal U into weak current
It is sent to after signal I and weak voltage signal U in first determination module 4 and second determination module 5；
S3, the first analog-digital converter 8 in first determination module 4 will receive weak current signal I and weak voltage signal U
The first calculating comparison circuit 10 is sent to after being converted into data signal, the first calculating comparison circuit 10 calculates realtime power
P, P=U*I；
S4, described first calculates comparison circuit 10 by P compared with Ps, and P and Ps comparison step are as follows：
As P >=PSWhen, the system for being used to start wind-driven generator low-voltage crossing experimental rig enters preparation startup shape
State, fan condition Pt, t are now recorded, at the time of wherein t is under corresponding power, fan condition P is recorded after the t+ Δ t timesΔt、t+
Δt；
OrderM=PΔt-Ps；
As k >=0, the system for being used to start wind-driven generator low-voltage crossing experimental rig sends firing test equipment
Signal enabling complete once test；
As k ＜ 0 and m ＜ 0, the system for starting wind-driven generator low-voltage crossing experimental rig exits preparation and opened
Dynamic state, continue to track wind-driven generator power P；
As k ＜ 0 and m >=0, P=P is madeΔt, the system for being used to start wind-driven generator low-voltage crossing experimental rig
Maintain to prepare starting state, repeat above step；
S5, after wind-driven generator low-voltage crossing experimental rig successfully starts up each time, in second determination module 5
Second analog-digital converter 11 will receive after weak current signal I and weak voltage signal U is converted into data signal and be sent to the second calculating
Comparison circuit 13, the second calculating comparison circuit 13 calculate realtime power P, P=U*I；
S6, described second calculates comparison circuit 13 by P compared with Pn, and P and Pn comparison step are as follows：
Small-power test model：0.1Pn≤P≤0.3Pn, meet regulatory requirements, wind-driven generator low-voltage crossing experiment dress
Put and start successfully, it is otherwise unsuccessful；
High-power test pattern：P>0.9Pn meets regulatory requirements, wind-driven generator low-voltage crossing experimental rig start into
Work(, otherwise start unsuccessful；
S7, if wind-driven generator low-voltage crossing experimental rig starts successfully, pass through digital analog converter 14 and power amplifier
15 remove trigger relay 16, and the relay 16 controls the signal lamp 17, and work people is prompted by signal lamp 17
Member's wind-driven generator low-voltage crossing experimental rig starts successfully, if result judgement is to be unsatisfactory for regulatory requirements, after being spaced T time
Restart the first determination module 4 and continue new test.
From above technical scheme, it is used to start wind-driven generator low-voltage crossing experimental rig this application provides one kind
System, the current transformer 1 and the voltage transformer 2 send the current signal collected and voltage signal to described
Signal conditioner 3, the signal conditioner 3 are sent to first determination module 4 after electric quantity signal is modulated into weak electric signal
With second determination module 5, first determination module 4 and second determination module 5 enter to the weak electric signal received
Row is calculated and judged, result of calculation meets experimental condition, and first determination module 4 sends enabling signal to wind-driven generator
Low-voltage crossing experimental rig, result of calculation are unsatisfactory for experimental condition, continue to gather signal, until result meets experimental condition, institute
State and instead of manually to the experiment of wind-driven generator low-voltage crossing for starting the system of wind-driven generator low-voltage crossing experimental rig
The startup of device, it is time saving and energy saving.
Claims (6)
- A kind of 1. system for being used to start wind-driven generator low-voltage crossing experimental rig, it is characterised in that：It is described to be used to start wind The system of power generator low-voltage crossing experimental rig include current transformer (1), voltage transformer (2), signal conditioner (3), First determination module (4), the second determination module (5) and result display module (6), wherein,The current transformer (1) is connected with the voltage transformer (2)；The current transformer (1) is connected with the signal conditioner (3), the voltage transformer (2) and the signal condition Device (3) connects；First determination module (4) is connected with the signal conditioner (3)；Second determination module (5) is connected with the signal conditioner (3)；First determination module (4) is connected with second determination module (5)；The result display module (6) is connected with second determination module (5).
- 2. the system as claimed in claim 1 for being used to start wind-driven generator low-voltage crossing experimental rig, it is characterised in that：Institute Stating the first determination module (4) includes the first analog-digital converter (8), the first level translator (9) and the first calculating comparison circuit (10), wherein,The input of first analog-digital converter (8) is connected with the output end of the signal conditioner (3)；The output end of first analog-digital converter (8) is connected with the input of first level translator (9)；The output end of first level translator (9) is connected with the input of the described first calculating comparison circuit (10)；The output end of the first calculating comparison circuit (10) is connected with second determination module (5).
- 3. the system as claimed in claim 1 for being used to start wind-driven generator low-voltage crossing experimental rig, it is characterised in that：Institute Stating the second determination module (5) includes the second analog-digital converter (11), second electrical level converter (12), the second calculating comparison circuit (13), digital analog converter (14) and power amplifier (15), wherein,The input of second analog-digital converter (11) is connected with the output end of the signal conditioner (3)；The output end of second analog-digital converter (11) is connected with the input of the second electrical level converter (12)；The output end of the second electrical level converter (12) is connected with the input of the described second calculating comparison circuit (13)；The output end of the second calculating comparison circuit (13) is connected with the input of the digital analog converter (14)；The output end of the digital analog converter (14) is connected with the input of the power amplifier (15)；The output end of the power amplifier (15) is connected with the result display module (6).
- 4. the system according to claim 1 for being used to start wind-driven generator low-voltage crossing experimental rig, it is characterised in that： The result display module (6) includes relay (16), signal lamp (17) and resistance (18), wherein,The coil of the relay (16) is connected with second determination module (5)；A pair of normally opened contacts, the signal lamp (17) and the resistance (18) series connection of the relay (16).
- 5. the system according to claim 1 for being used to start wind-driven generator low-voltage crossing experimental rig, it is characterised in that： The first CAN transceiver (20), first CAN transceiver (20) and the described first meter are provided with first determination module (4) Calculate comparison circuit (10) connection.
- 6. the system according to claim 1 for being used to start wind-driven generator low-voltage crossing experimental rig, it is characterised in that： The second CAN transceiver (21), second CAN transceiver (21) and the described second meter are provided with second determination module (5) Calculate comparison circuit (13) connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710790669.9A CN107390125B (en) | 2017-09-05 | 2017-09-05 | System for starting low-voltage ride through test device of wind driven generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710790669.9A CN107390125B (en) | 2017-09-05 | 2017-09-05 | System for starting low-voltage ride through test device of wind driven generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107390125A true CN107390125A (en) | 2017-11-24 |
| CN107390125B CN107390125B (en) | 2023-11-17 |
Family
ID=60349136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710790669.9A Active CN107390125B (en) | 2017-09-05 | 2017-09-05 | System for starting low-voltage ride through test device of wind driven generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107390125B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100002475A1 (en) * | 2008-07-01 | 2010-01-07 | American Superconductor Corporation | Low voltage ride through |
| CN101931241A (en) * | 2010-09-21 | 2010-12-29 | 许继集团有限公司 | Wind farm grid-connected coordination control method |
| CN102981121A (en) * | 2012-08-24 | 2013-03-20 | 西北电网有限公司 | Wind turbine generator set mobile type low voltage riding through testing apparatus safety chain and implementation method |
| CN105262139A (en) * | 2015-11-27 | 2016-01-20 | 云南电网有限责任公司电力科学研究院 | System for improving wind turbine generator low voltage ride through characteristics and method |
| US20170022977A1 (en) * | 2013-11-28 | 2017-01-26 | Vestas Wind Systems A/S | Basic grid supervision of a wind power plant |
| CN206472072U (en) * | 2017-03-02 | 2017-09-05 | 杭州盛忆镐科技有限公司 | Power supply unit for intermediate frequency furnace water cooling plant |
| CN207215985U (en) * | 2017-09-05 | 2018-04-10 | 云南电网有限责任公司电力科学研究院 | A kind of system for being used to start wind-driven generator low-voltage crossing experimental rig |
-
2017
- 2017-09-05 CN CN201710790669.9A patent/CN107390125B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100002475A1 (en) * | 2008-07-01 | 2010-01-07 | American Superconductor Corporation | Low voltage ride through |
| CN101931241A (en) * | 2010-09-21 | 2010-12-29 | 许继集团有限公司 | Wind farm grid-connected coordination control method |
| CN102981121A (en) * | 2012-08-24 | 2013-03-20 | 西北电网有限公司 | Wind turbine generator set mobile type low voltage riding through testing apparatus safety chain and implementation method |
| US20170022977A1 (en) * | 2013-11-28 | 2017-01-26 | Vestas Wind Systems A/S | Basic grid supervision of a wind power plant |
| CN105262139A (en) * | 2015-11-27 | 2016-01-20 | 云南电网有限责任公司电力科学研究院 | System for improving wind turbine generator low voltage ride through characteristics and method |
| CN206472072U (en) * | 2017-03-02 | 2017-09-05 | 杭州盛忆镐科技有限公司 | Power supply unit for intermediate frequency furnace water cooling plant |
| CN207215985U (en) * | 2017-09-05 | 2018-04-10 | 云南电网有限责任公司电力科学研究院 | A kind of system for being used to start wind-driven generator low-voltage crossing experimental rig |
Non-Patent Citations (1)
| Title |
|---|
| YI ZHANG 等: "ind Power Development in Power Grid and Study on Dispatching Strategy" * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107390125B (en) | 2023-11-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Inci et al. | Review of fuel cells to grid interface: Configurations, technical challenges and trends | |
| Sastry et al. | Evaluation of cascaded H-bridge inverter for utility-scale photovoltaic systems | |
| CN103064023B (en) | For grid-connected proving installation and the method for testing thereof of wind-powered electricity generation and photovoltaic | |
| Gao et al. | DC fault analysis of MMC based HVDC system for large offshore wind farm integration | |
| US20130193998A1 (en) | Default Current Test Method of Impulse Voltage Mixed High Voltage Direct Current Converter Valve | |
| CN103178733A (en) | High-efficiency, three-level, single-phase inverter | |
| EP3410552B1 (en) | Routing power in a power system | |
| Awadallah et al. | Impact of solar panels on power quality of distribution networks and transformers | |
| CN207215985U (en) | A kind of system for being used to start wind-driven generator low-voltage crossing experimental rig | |
| EP3117500B1 (en) | Method and apparatus for obtaining electricity from offshore wind turbines | |
| CN102664428A (en) | Low-voltage ride-through system and testing method thereof | |
| CN103746548B (en) | A kind of Multi-functional analog power supply for the grid-connected detection of distributed power source | |
| CN115021307A (en) | New energy power station direct current collection networking system and method | |
| Johnson et al. | Offshore wind farm with DC collection system | |
| Nair et al. | Microgrid control strategies for enhanced storage management | |
| CN107069747B (en) | A kind of minimum start-up mode based on regional voltage stabilization determines method | |
| Dongyu et al. | A new voltage sag generator base on power electronic devices | |
| CN107390125A (en) | A kind of system for being used to start wind-driven generator low-voltage crossing experimental rig | |
| Richard et al. | Experimental Design of Solar DC Microgrid for the Rural Electrification of Africa | |
| CN203204097U (en) | Inverter test platform based on photovoltaic array IV simulator | |
| CN208597024U (en) | A kind of high-power high voltage test no partial discharge frequency conversion power supply and its resonant experimental device | |
| CN201616776U (en) | Inverter with two switch elements | |
| Lian et al. | Dual-active bridge converter with input-series-input-parallel output-series connection | |
| WO2002087062A3 (en) | Current inverter | |
| Fan et al. | Current output hard‐switched full‐bridge DC/DC converter for wind energy conversion systems |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |