CN116300526A - Simulation system and simulation method of wind turbine generator set - Google Patents
Simulation system and simulation method of wind turbine generator set Download PDFInfo
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Abstract
The embodiment of the specification discloses a simulation system and a simulation method of a wind turbine generator. The simulation system comprises RT-LAB simulation equipment and Bladed simulation equipment; the RT-LAB simulation device is connected with a current transformer controller and a main controller of the wind turbine, and is used for transmitting first simulation data between the RT-LAB simulation device and the current transformer controller, and transmitting second simulation data to the Bladed simulation device through the current transformer controller and the main controller; the Bladed simulation device is provided with a pneumatic part model of the wind turbine generator, is connected with a main controller of the wind turbine generator, and is used for transmitting third simulation data with the main controller and transmitting fourth simulation data to the RT-LAB simulation device through the main controller; the RT-LAB simulation equipment is also used for acquiring voltage response and current response of the wind turbine before and after fault ride-through, and the voltage response and the current response are used for analyzing the fault ride-through characteristics of the wind turbine.
Description
Technical Field
The embodiment of the specification relates to the technical field of wind power, in particular to a simulation system and a simulation method of a wind turbine generator.
Background
In order to simplify grid connection detection of the same-series wind turbine of a manufacturer, if a certain model wind turbine passes through fault ride-through characteristic detection, when key parts (a generator, a variable pitch system, blades and the like) of the same-series wind turbine are replaced, the fault ride-through capacity of the wind turbine can be analyzed and evaluated through a consistency evaluation method based on simulation test. However, consistency assessment based on simulation tests requires that the simulation platform accurately reflect the dynamic characteristics of each main device and control of the wind turbine generator. The current simulation platform simplifies the wind turbine to a certain extent, and can not accurately reflect the response characteristics of the wind turbine under all working conditions. For example, the current method for simulating the fault ride-through characteristics of the wind turbine generator mainly adopts a hardware-in-loop simulation system based on a converter controller and a simulator. And the control simulation is realized by communicating the converter control program with the electric loop model of the wind turbine generator system in the simulator. The method can only reflect the control characteristics of the converter control logic in an ideal scene, can not effectively simulate the matching condition of the main controller and the converter controller under the fault working condition, and is difficult to realize the simulation of the full-link control characteristics of the wind turbine generator under the complex wind environment.
Disclosure of Invention
The embodiment of the specification provides a simulation system and a simulation method of a wind turbine generator set, so as to embody the full-link control characteristic of the wind turbine generator set in the fault ride-through characteristic detection process and be close to engineering practice. The technical solutions of the embodiments of the present specification are as follows.
In a first aspect of the embodiments of the present disclosure, a simulation system of a wind turbine generator is provided, including an RT-LAB simulation device and a Bladed simulation device;
the RT-LAB simulation device is connected with a converter controller and a main controller of the wind turbine, and is used for transmitting first simulation data according to the electric part model and the converter controller, and transmitting second simulation data to the Bladed simulation device through the converter controller and the main controller;
the Bladed simulation device is connected with a main controller of the wind turbine, and is used for transmitting third simulation data according to the pneumatic part model and the main controller, and transmitting fourth simulation data to the RT-LAB simulation device through the main controller;
the RT-LAB simulation equipment is also used for acquiring voltage response and current response of the wind turbine before and after fault ride-through, and the voltage response and the current response are used for analyzing the fault ride-through characteristics of the wind turbine.
In a first aspect of embodiments of the present disclosure, a simulation method is provided, including:
setting a steady-state operation wind condition through a Bladed simulation device, wherein the Bladed simulation device is connected with a main controller;
setting a fault voltage working condition through RT-LAB simulation equipment, wherein the RT-LAB simulation equipment is connected with a converter controller and a main controller;
after the host controller starts the machine instruction to issue, adding fault voltage;
acquiring voltage response and current response of the wind turbine generator before and after fault ride through by using RT-LAB simulation equipment;
under the condition that the converter controller does not have fault off-grid, calculating a preset index according to the voltage response and the current response, wherein the preset index is used for representing the fault ride-through characteristic of the wind turbine generator.
According to the technical scheme provided by the embodiment of the specification, cross-platform combined hardware-in-loop testing can be performed on the main controller and the converter controller of the wind turbine generator. In addition, in the simulation test process, the coordination effect of the main controller and the converter controller is considered, the full-link control characteristic of the wind turbine generator before and after the fault ride-through process is reflected, and the wind turbine generator is close to engineering practice.
Drawings
In order to more clearly illustrate the embodiments of the present description or the solutions in the prior art, the drawings that are required for the embodiments or the description of the prior art will be briefly described, the drawings in the following description are only some embodiments described in the present description, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic functional structure of a simulation system according to an embodiment of the present disclosure;
FIG. 2 is a schematic functional structure of another simulation system according to an embodiment of the present disclosure;
FIG. 3 is a schematic flow chart of a simulation method according to an embodiment of the present disclosure;
FIG. 4 is a flow chart of another simulation method according to an embodiment of the present disclosure;
FIG. 5a is a schematic diagram of a voltage curve of the machine side according to an embodiment of the present disclosure;
FIG. 5b is a schematic diagram of an active power curve in an embodiment of the present disclosure;
FIG. 5c is a schematic diagram of a reactive power curve in an embodiment of the present disclosure;
fig. 5d is a schematic diagram of a generator speed curve in an embodiment of the present disclosure.
Detailed Description
The technical solutions of the embodiments of the present specification will be clearly and completely described below with reference to the drawings in the embodiments of the present specification, and it is apparent that the described embodiments are only some embodiments of the present specification, not all embodiments. The specific embodiments described herein are to be considered in an illustrative rather than a restrictive sense. All other embodiments derived by a person of ordinary skill in the art based on the described embodiments of the present disclosure fall within the scope of the present disclosure. In addition, relational terms such as "first" and "second", and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
The embodiment of the specification provides a simulation system of a wind turbine generator. The simulation system is used for realizing the combined hardware-in-loop test of the wind turbine generator main controller and the converter controller. The simulation system considers the coordination effect of the wind turbine main controller and the converter controller in the fault ride-through process, reflects the full-link control characteristic of the wind turbine in the fault ride-through characteristic detection process, and is closer to engineering practice than the traditional simulation modeling method. The wind turbine may include a doubly-fed wind turbine. The stator and the rotor of the doubly-fed wind turbine generator can feed power to a power grid. And a control program of the wind turbine generator converter is operated in the converter controller. The main function of the wind turbine generator converter comprises that when the rotating speed of the rotor changes, the amplitude, the phase, the frequency and the like of excitation are controlled through the converter, so that the output voltage, the frequency, the amplitude and the power grid of the generator are kept consistent, and the variable-speed constant-frequency power generation of the wind turbine generator is realized. The main controller is used for controlling the converter controller, and other aspects of control, such as pitch control, can be performed. The fault ride-through characteristic may include a fault voltage ride-through characteristic. The fault voltage ride through characteristic may include a high voltage ride through characteristic, a low voltage ride through characteristic, and the like.
The simulation system may include an RT-LAB simulation device and a Bladed simulation device. The simulation system can realize cross-platform joint hardware in-loop testing, such as joint hardware in-loop testing of a cross-RT-LAB platform and a Bladed platform. And the RT-LAB simulation equipment is provided with an electrical part model of the wind turbine generator. The electric part model can comprise a simulation model of a power grid, a simulation model of a motor and a converter, and the like. And the Bladed simulation equipment is provided with a pneumatic part model of the wind turbine generator. The aerodynamic part model can comprise a simulation model of wind environment, a simulation model of wind turbine aerodynamic and shafting, and the like. Through the electric part model and the pneumatic part model, test conditions can be flexibly set, the operation is simple and flexible, and the test efficiency is high.
In practical application, the converter controller of the wind turbine CAN be connected with the RT-LAB simulation equipment, the main controller of the wind turbine CAN be connected with the Bladed simulation equipment, the main controller of the wind turbine CAN be connected with the RT-LAB simulation equipment in a DB37 communication mode, and the converter controller of the wind turbine CAN be connected with the main controller in a CAN communication mode, so that a simulation system for fault ride-through test of the wind turbine is obtained. By setting specific power grid operation conditions and fault conditions in the RT-LAB simulation equipment and setting specific wind turbine generator operation conditions in the Bladed simulation equipment, the voltage and current response conditions of the wind turbine generator before and after fault ride-through can be tested, and further the fault ride-through capability characteristics of the wind turbine generator can be obtained through analysis. Therefore, the combined hardware-in-loop test of the wind turbine generator main controller and the converter controller is realized. In some scene examples, a converter controller of a wind turbine generator CAN be connected with RT-LAB simulation equipment through an IO board card, a main controller of the wind turbine generator CAN be connected with the Bladed simulation equipment through a communication model, and the converter controller of the wind turbine generator and the main controller CAN be connected in a communication mode such as CAN, so that a simulation system for fault ride-through test is obtained.
The simulation system can comprise a first upper computer, a second upper computer and a third upper computer. The first upper computer may include an upper computer of the converter controller, and is configured to set the converter controller. The second upper computer may include an upper computer of the RT-LAB simulation device, and is configured to set the RT-LAB simulation device. For example, the second upper computer may compile an electrical part model of the wind turbine generator set and then download the compiled electrical part model to the RT-LAB simulation device. The third host computer may be used as a Bladed emulation device. GH loaded software can be operated in the third upper computer, and real-time simulation is realized through a matched program Hardware test. Of course, the third upper computer may also be used as an upper computer of the main controller, for setting the main controller.
The RT-LAB simulation equipment can be connected with the main controller and the converter controller in a DB37 communication mode. The Bladed simulation device can be connected with the main controller through a TCP/IP communication mode. In the fault-ride-through characteristic detection process, the RT-LAB simulation device can transmit first simulation data according to the electric part model and the converter controller, and transmit second simulation data to the Bladed simulation device through the converter controller and the main controller according to the electric part model. The Bladed simulation device may transmit third simulation data according to the pneumatic part model and the master controller, and transmit fourth simulation data to the RT-LAB simulation device via the master controller according to the pneumatic part model. The RT-LAB simulation equipment is also used for acquiring voltage response and current response of the wind turbine generator before and after fault ride-through. And the voltage response and the current response are used for analyzing the fault ride-through characteristics of the wind turbine generator. Wherein in the fault-ride-through characteristic detection process, the communication link of the second simulation data may include: RT-LAB simulation equipment- & gt converter controller- & gt master controller- & gt loaded simulation equipment. The communication link of the fourth simulation data may include: bladed simulation device → master controller → RT-LAB simulation device.
In the fault-ride-through characteristic detection process, both the output and the input of the RT-LAB simulation device may include analog quantities and digital quantities. Specifically, the analog quantity generated and output by the RT-LAB simulation device includes: grid voltage, grid current, stator voltage, stator current, grid side voltage, grid side module current, machine side voltage, machine side module current, generator electromagnetic torque, direct current bus voltage, and the like. The analog quantity input by the RT-LAB simulation equipment comprises the rotation speed of a generator and the like. The digital quantities generated and output by the RT-LAB simulation device include: and the switching-on signal feedback of the network side contactor, the switching-on signal feedback of the excitation contactor, the switching-on signal feedback of the protection circuit and the like. The digital quantities input by the RT-LAB simulation device include: the grid-side converter IGBT pulse signal, the machine-side converter IGBT pulse signal, the grid-side contactor switching-on signal, the excitation contactor switching-on signal, the protection circuit switching-on signal and the like. The output and input of the Bladed simulation device may include analog quantities. Specifically, the analog quantity generated and output by the Bladed simulation device includes: generator speed, low speed shaft speed, pitch angle, yaw angle, wind speed, etc. The analog quantity input by the Bladed simulation device comprises: pitch angle commands, yaw angle commands, generator electromagnetic torque, etc.
The first simulation data may include an analog quantity and a digital quantity. For example, the first simulation data may include the following analog quantities: grid voltage, grid current, stator voltage, stator current, grid side voltage, grid side module current, machine side voltage, machine side module current, dc bus voltage, etc. The first simulation data may include the following digital quantities: and the switching-on signal feedback of the network side contactor, the switching-on signal feedback of the excitation contactor, the switching-on signal feedback of the protection circuit and the like. In some examples of scenarios, the RT-LAB simulation device may send to the converter controller an analog quantity in the first square-wave data, and the converter controller may send to the RT-LAB simulation device a digital quantity in the first square-wave data. The second simulation data may include an analog quantity. For example, the second simulation data may include generator electromagnetic torque, and the like. The third simulation data may include an analog quantity. For example, the third simulation data may include a low speed shaft rotational speed, a pitch angle, a yaw angle, a wind speed, and the like. The fourth simulation data may include an analog quantity. For example, the fourth simulation data may include generator speed, etc.
Please refer to fig. 1. The electric part model in the RT-LAB simulation equipment can be used for simulating an equivalent power grid, a generator, a converter and the like. In practical application, the electric part model can be compiled and then downloaded into the RT-LAB simulation equipment. The pneumatic part model in the Bladed simulation device can be used for simulating wind environments, wind wheels, shafting and the like. The pneumatic part model is operated based on GH loaded software, and real-time simulation is realized through a matched program Hardware test. The converter controller and the main controller in fig. 1 can be real objects, and can specifically comprise products which are already produced in a market by different manufacturers, and the model of the converter controller and the main controller are consistent with that of a wind turbine generator set running on site. Of course, the product under development can also be used for simulation test. The arrow indicates the direction of data transmission.
The RT-LAB simulation device and the converter controller can perform bidirectional real-time communication, the RT-LAB simulation device and the main controller can perform unidirectional real-time communication, the Bladed simulation device and the main controller can perform bidirectional real-time communication, and the RT-LAB simulation device and the Bladed simulation device can perform bidirectional real-time communication. For example, the RT-LAB simulation device may send second simulation data to the Bladed simulation device via the current transformer controller and the master controller, and the Bladed simulation device may send fourth simulation data to the RT-LAB simulation device via the master controller. Thereby having the following technical effects.
(1) If the Bladed simulation device is directly connected with the RT-LAB simulation device for communication. The RT-LAB simulation device requires at least 4 IO communication boards, such as A, B, C, D. The IO communication board card A is used for the RT-LAB simulation equipment to send analog quantity (analog quantity in the first simulation data) to the converter controller, the IO communication board card B is used for the RT-LAB simulation equipment to receive digital quantity (digital quantity in the first simulation data) sent by the converter controller, the IO communication board card C is used for the RT-LAB simulation equipment to send analog quantity (second simulation data) to the Bladed simulation equipment, and the IO communication board card D is used for the RT-LAB simulation equipment to receive analog quantity (fourth simulation data) sent by the Bladed simulation equipment. The price of the IO communication board card is higher, and larger simulation cost is needed.
The Bladed simulation device in the embodiment of the present disclosure is not directly connected to the RT-LAB simulation device, and two-way real-time communication is performed between the Bladed simulation device and the RT-LAB simulation device via the converter controller and/or the main controller. Thus, 3 IO communication boards such as E, F, G can be needed by the RT-LAB simulation equipment. The IO communication board card E is used for the RT-LAB simulation equipment to send analog quantity (analog quantity in the first simulation data and second simulation data) to the converter controller, the IO communication board card F is used for the RT-LAB simulation equipment to receive digital quantity (digital quantity in the first simulation data) sent by the converter controller, and the IO communication board card G is used for the RT-LAB simulation equipment to receive analog quantity (fourth simulation data) sent by the main controller. The number of IO communication boards is small, so that the simulation cost is saved.
(2) As can be seen from FIG. 1, the Master controller is a Master terminal for cross-platform simulation communication, and the Bladed simulation device and the RT-LAB simulation device are Slaver terminals. Compared with simulation software, the main controller has stronger clock calibration capability, so that the real-time performance of cross-platform simulation can be ensured, and the simulation accuracy is improved.
Please refer to fig. 2. The simulation system can comprise a first upper computer, a second upper computer, a third upper computer, a converter controller, an RT-LAB simulator, a main controller and the like. The first upper computer may include an upper computer of the converter controller, and is configured to set the converter controller. The second upper computer may include an upper computer of an RT-LAB simulator, configured to set the RT-LAB simulator. For example, the second upper computer may compile an electrical part model of the wind turbine generator set and then download the compiled electrical part model to the RT-LAB simulation device. The third host computer may be used as a Bladed emulation device. GH loaded software can be operated in the third upper computer, and real-time simulation is realized through a matched program Hardware test. Of course, the third upper computer may also be used as an upper computer of the main controller, for setting the main controller.
Based on the simulation system of the wind turbine generator set of the embodiment of the specification, the embodiment of the specification correspondingly provides a simulation method. Please refer to fig. 3 and fig. 4. The simulation method may include the following steps.
Step S31: and setting a steady-state operation wind condition through the Bladed simulation equipment, wherein the Bladed simulation equipment is connected with the main controller.
Step S33: and setting a fault voltage working condition through an RT-LAB simulation device, wherein the RT-LAB simulation device is connected with the converter controller and the main controller.
Step S35: and adding fault voltage after the main controller starts the machine instruction.
Step S37: and acquiring voltage response and current response of the wind turbine generator before and after fault ride-through RT-LAB simulation equipment.
Step S39: under the condition that the converter controller does not have fault off-grid, calculating a preset index according to the voltage response and the current response, wherein the preset index is used for representing the fault ride-through characteristic of the wind turbine generator.
In some embodiments, the converter controller of the wind turbine generator may be connected to the RT-LAB simulation device, the main controller of the wind turbine generator may be connected to the Bladed simulation device, and the converter controller of the wind turbine generator may be connected to the main controller by adopting a communication manner such as CAN. For example, a converter controller of a wind turbine generator CAN be connected with RT-LAB simulation equipment through an IO board card, a main controller of the wind turbine generator CAN be connected with the Bladed simulation equipment through a communication model, and the converter controller of the wind turbine generator and the main controller CAN be connected in a CAN communication mode.
In some embodiments, the operating wind conditions may include wind speed. The wind speed may be set in particular according to a wind power curve. For example, a wind speed corresponding to a high wind condition and a wind speed corresponding to a low wind condition may be selected according to a wind power curve. The strong wind working condition can be P >0.9Pn, the small wind working condition can be 0.1Pn < P <0.3Pn, P represents the active power output of the wind turbine, and Pn represents the rated power of the wind turbine. Of course, the addition of turbulent wind may be optional, as desired.
In some embodiments, the fault voltage conditions may include a magnitude and a time of the fault voltage. The voltage failure may be implemented based on an impedance voltage division scheme. The amplitude and time can be set according to the requirement of the wind turbine generator on the power system.
In some embodiments, after the main controller starts the machine instruction, the fault voltage is added after the operation of the simulation system is stable. And detecting the voltage and current response conditions of the wind turbine generator set through the RT-LAB simulation equipment. Whether the converter controller fails to get off the network can be detected. If no fault is off-grid, a preset index can be calculated according to the voltage response and the current response. The preset index is used for representing the fault ride-through characteristic of the wind turbine generator. The preset indexes can comprise active power, reactive current response and the like of the wind turbine before and after fault ride-through. If the trawl is in fault, the control strategy of the converter controller can be corrected. After the correction, step S35 to step S39 may be repeated.
In some embodiments, steps S31-S39 may be iteratively performed until an iteration end condition is met. Thus obtaining a plurality of groups of preset indexes corresponding to various fault voltage working conditions. And drawing a fault ride-through characteristic curve of the wind turbine generator according to a plurality of groups of preset indexes. For example, the fault voltage conditions in step S33 may be modified and steps S35-S39 repeated. Thus, a plurality of groups of preset indexes corresponding to various fault voltage working conditions are obtained, and then a fault ride-through characteristic curve of the wind turbine generator is drawn. For example, fig. 5 a-5 d are low voltage ride through characteristics of a wind turbine. Fig. 5a is a plot of the terminal voltage, with the abscissa representing time and the ordinate representing terminal voltage. Fig. 5b is an active power curve, with the abscissa representing time and the ordinate representing active power. Fig. 5c is a reactive power curve, with the abscissa representing time and the ordinate representing reactive power. Fig. 5d is a generator speed curve, with the abscissa representing time and the ordinate representing generator speed. In fig. 5 a-5 d, the master tape model represents the simulation system of the embodiment of the present specification, i.e. the simulation system includes an RT-LAB simulation device, a current transformer controller, a master controller and a Bladed simulation device. The master control model-free representation simulation system comprises RT-LAB simulation equipment, a converter controller and a master controller, but does not comprise a Bladed simulation equipment. The single-transformer-flow representation simulation system comprises an RT-LAB simulation device and a variable-flow controller, but does not comprise a main controller and a Bladed simulation device.
In the simulation method of the embodiment of the specification, the coordination effect of the main controller and the converter controller is considered in the simulation test process, so that the full-link control characteristic of the wind turbine generator before and after the fault ride-through process is reflected, and the simulation method is close to engineering practice.
In the 90 s of the 20 th century, improvements to one technology could clearly be distinguished as improvements in hardware (e.g., improvements to circuit structures such as diodes, transistors, switches, etc.) or software (improvements to the process flow). However, with the development of technology, many improvements of the current method flows can be regarded as direct improvements of hardware circuit structures. Designers almost always obtain corresponding hardware circuit structures by programming improved method flows into hardware circuits. Therefore, an improvement of a method flow cannot be said to be realized by a hardware entity module. For example, a programmable logic device (Programmable Logic Device, PLD) (e.g., field programmable gate array (Field Programmable Gate Array, FPGA)) is an integrated circuit whose logic function is determined by the programming of the device by a user. A designer programs to "integrate" a digital system onto a PLD without requiring the chip manufacturer to design and fabricate application-specific integrated circuit chips. Moreover, nowadays, instead of manually manufacturing integrated circuit chips, such programming is mostly implemented by using "logic compiler" software, which is similar to the software compiler used in program development and writing, and the original code before the compiling is also written in a specific programming language, which is called hardware description language (Hardware Description Language, HDL), but not just one of the hdds, but a plurality of kinds, such as ABEL (Advanced Boolean Expression Language), AHDL (Altera Hardware Description Language), confluence, CUPL (Cornell University Programming Language), HDCal, JHDL (Java Hardware Description Language), lava, lola, myHDL, PALASM, RHDL (Ruby Hardware Description Language), etc., VHDL (Very-High-Speed Integrated Circuit Hardware Description Language) and Verilog are currently most commonly used. It will also be apparent to those skilled in the art that a hardware circuit implementing the logic method flow can be readily obtained by merely slightly programming the method flow into an integrated circuit using several of the hardware description languages described above.
The system, apparatus, module or unit set forth in the above embodiments may be implemented in particular by a computer chip or entity, or by a product having a certain function. One typical implementation is a computer. The computer may be a personal computer, a laptop computer, a cellular telephone, a camera phone, a smart phone, a personal digital assistant, a media player, a navigation device, an email device, a game console, a tablet computer, a wearable device, or a combination of any of these devices.
The description may be described in the general context of computer-executable instructions, such as program modules, being executed by a computer. Generally, program modules include routines, programs, objects, components, data structures, etc. that perform particular tasks or implement particular abstract data types. The specification may also be practiced in distributed computing environments where tasks are performed by remote processing devices that are linked through a communications network. In a distributed computing environment, program modules may be located in both local and remote computer storage media including memory storage devices.
Those skilled in the art will appreciate that the descriptions of the various embodiments are each focused on, and that portions of one embodiment that are not described in detail may be referred to as related descriptions of other embodiments. In addition, it will be appreciated that those skilled in the art, upon reading the present specification, may conceive of any combination of some or all of the embodiments set forth herein without any inventive effort, and that such combination is within the scope of the disclosure and protection of the present specification.
Although the present description has been described by way of example, those of ordinary skill in the art will recognize that there are numerous variations and modifications to the description, and it is intended that the appended claims encompass such variations and modifications without departing from the spirit of the present description.
Claims (10)
1. The simulation system of the wind turbine generator is characterized by comprising RT-LAB simulation equipment and Bladed simulation equipment;
the RT-LAB simulation device is connected with a converter controller and a main controller of the wind turbine, and is used for transmitting first simulation data according to the electric part model and the converter controller, and transmitting second simulation data to the Bladed simulation device through the converter controller and the main controller;
the Bladed simulation device is connected with a main controller of the wind turbine, and is used for transmitting third simulation data according to the pneumatic part model and the main controller, and transmitting fourth simulation data to the RT-LAB simulation device through the main controller;
the RT-LAB simulation equipment is also used for acquiring voltage response and current response of the wind turbine before and after fault ride-through, and the voltage response and the current response are used for analyzing the fault ride-through characteristics of the wind turbine.
2. The simulation system of claim 1, wherein the wind turbine comprises a doubly-fed wind turbine.
3. The simulation system of claim 1, wherein the RT-LAB simulation device is connected to the main controller and the converter controller through DB37 communication, and the Bladed simulation device is connected to the main controller through TCP/IP communication.
4. The simulation system of claim 1, wherein the simulation system comprises a first host computer and a second host computer, the first host computer comprises a host computer of a current transformer controller, the second host computer comprises a host computer of an RT-LAB simulation device, the loaded simulation device comprises a third host computer, and the third host computer is a host computer of a master controller.
5. The simulation system of claim 1 wherein the first simulation data comprises an analog quantity and a digital quantity, the second simulation data comprises a generator electromagnetic torque, the third simulation data comprises an analog quantity, and the fourth simulation data comprises a generator rotational speed.
6. A simulation method based on the simulation system of any one of claims 1 to 5, comprising:
setting a steady-state operation wind condition through a Bladed simulation device, wherein the Bladed simulation device is connected with a main controller;
setting a fault voltage working condition through RT-LAB simulation equipment, wherein the RT-LAB simulation equipment is connected with a converter controller and a main controller;
after the host controller starts the machine instruction to issue, adding fault voltage;
acquiring voltage response and current response of the wind turbine generator before and after fault ride through by using RT-LAB simulation equipment;
under the condition that the converter controller does not have fault off-grid, calculating a preset index according to the voltage response and the current response, wherein the preset index is used for representing the fault ride-through characteristic of the wind turbine generator.
7. The simulation method of claim 6, wherein the operating wind conditions include wind speed and the fault voltage conditions include a magnitude and a time of a fault voltage.
8. The simulation method according to claim 6, wherein the preset index includes at least one of: active power, reactive current response.
9. The simulation method according to claim 6, wherein the method further comprises:
and under the condition that the converter controller fails to be disconnected, correcting the control strategy of the converter controller.
10. The simulation method according to claim 6, wherein the method further comprises:
iteratively executing the steps of setting the steady-state operation wind working condition, setting the fault voltage working condition, adding the fault voltage, obtaining the voltage response and the current response, and calculating the preset index until the iteration ending condition is met;
and drawing a fault ride-through characteristic curve of the wind turbine generator according to the plurality of groups of preset indexes.
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| CN116880241A (en) * | 2023-08-04 | 2023-10-13 | 山东大学 | Multi-level control integrated system and method for offshore wind turbine ground test platform |
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| CN116880241A (en) * | 2023-08-04 | 2023-10-13 | 山东大学 | Multi-level control integrated system and method for offshore wind turbine ground test platform |
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