CN114326657A - Intelligent hardware-in-loop test platform for megawatt wind turbine electric control system - Google Patents
Intelligent hardware-in-loop test platform for megawatt wind turbine electric control system Download PDFInfo
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- CN114326657A CN114326657A CN202111501626.7A CN202111501626A CN114326657A CN 114326657 A CN114326657 A CN 114326657A CN 202111501626 A CN202111501626 A CN 202111501626A CN 114326657 A CN114326657 A CN 114326657A
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Abstract
The invention relates to the field of test of wind power generation electric control systems, in particular to an intelligent detection hardware-in-loop test platform for a megawatt wind turbine generator system electric control system. The method is characterized in that: the motor comprises a prime motor, wherein an output shaft of the prime motor is in transmission connection with an input shaft of a generator, an electric signal output end of the generator is connected with a frequency conversion cabinet, a control end of the prime motor is connected with a frequency converter so as to control the rotating speed of the prime motor, and the frequency converter is also connected with an upper computer through a simulation machine; the variable pitch control cabinet, the auxiliary signal output unit and the simulation machine are respectively connected with the main control cabinet through the signal conversion circuit and the fault implantation circuit in sequence, and the main control cabinet is communicated with the variable pitch control cabinet and the frequency conversion cabinet through optical fibers. The platform can effectively test the corresponding characteristics of the fan electric control system under the excitation of wind, reduces the debugging difficulty and the maintenance cost of the electric control system, and greatly improves the test efficiency.
Description
Technical Field
The invention relates to the field of test of wind power generation electric control systems, in particular to an intelligent detection hardware-in-loop test platform for a megawatt wind turbine generator system electric control system.
Background
With the rapid development of national economy and continuous innovation and progress of scientific technology in China, the proportion of wind driven generators in the field of power supply is larger and larger, particularly the continuous production of large-capacity wind driven generator sets in recent 20 years and the large application of new power generation technology are developed at an accelerated speed by clean energy, and the influence of the operation condition of a grid-connected generator set on the safe and stable operation of a power system is larger and larger. The electric control system is an important component of the wind turbine generator and plays important roles of monitoring and automatically adjusting the wind turbine generator, realizing maximum wind energy capture, ensuring good power grid compatibility and the like. The wind turbine generator electric control system can automatically run under all working conditions of automatic starting, grid connection, disconnection, automatic fault stop and the like of the wind turbine generator, and has the functions of monitoring, automatic control, protection and the like. The fan electric control system comprises a fan main control system, a variable frequency control system, a variable pitch control system, a peripheral execution component, a sensor and other systems, a main stream megawatt-level complete set of fan electric control cabinet set, a generator dragging test device, a partial execution load, a hardware-in-loop simulation target machine, an interface circuit, a development supporting simulation modeling model and other software and hardware equipment are used for building and researching a detection platform, the purpose is to perform full-range closed-loop inspection, detection, analysis and optimization after electric control maintenance, and the maintenance quality and the repair rate of the electric control component are improved.
The hardware-in-the-loop simulation testing technology is well applied to the field of automation industry, but the application in the field of wind power operation, maintenance, detection and overhaul is just started, and the hardware-in-the-loop simulation testing technology is mainly applied to development and testing of a wind turbine generator control system by scientific research institutions and institutions at present. In an actual electric control system of the wind turbine generator, field faults cannot be completely reproduced on a test platform. Therefore, a hardware-in-the-loop system built by a whole set of electric control system is necessary to be applied to develop a high-precision simulation model, the platform can realize the inspection and detection and performance test of the electric control system of the wind driven generator, wind power personnel carry out electric control and mechanical equipment technical training, and carry out corresponding technical modification experiment, verification and other work in due time.
Disclosure of Invention
The invention aims to provide an intelligent detection hardware-in-loop test platform for a megawatt wind turbine electric control system, which is simple, convenient, safe, scientific, low in cost, easy to realize and wide in application.
An intelligent hardware-in-loop test platform for an electric control system of a megawatt wind turbine generator system is characterized in that: the motor comprises a prime motor, wherein an output shaft of the prime motor is in transmission connection with an input shaft of a generator, an electric signal output end of the generator is connected with a frequency conversion cabinet, a control end of the prime motor is connected with a frequency converter so as to control the rotating speed of the prime motor, and the frequency converter is also connected with an upper computer through a simulation machine; the system also comprises a variable pitch control cabinet and an auxiliary signal output unit, wherein the variable pitch control cabinet, the auxiliary signal output unit and the simulator are respectively connected with the main control cabinet through a signal conversion circuit and a fault implantation circuit in sequence, and the main control cabinet is also communicated with the variable pitch control cabinet and the frequency conversion cabinet through optical fibers; wherein, a rotating speed encoder is arranged on the generator and is respectively connected with the frequency conversion cabinet and the main control cabinet; wherein the output shaft of the prime motor is provided with a speed measuring sensor which is connected with the main control cabinet.
Wherein the speed sensor has 2, and one of them speed sensor passes through pulse frequency control module and is connected with the main control cabinet, and another speed sensor is direct to be connected with the main control cabinet.
The invention has the beneficial effects that the megawatt wind power and electricity control system workshop intelligent test platform based on the hardware-in-loop simulation method is provided, the platform can effectively test the corresponding characteristics of the wind power and electricity control system under the wind excitation, the debugging difficulty and the maintenance cost of the electricity control system are reduced, and the test efficiency is greatly improved; the system can provide an all-working-condition real-time operation environment for the electric control system, can realize on-site fault recurrence, and is beneficial to fault diagnosis, troubleshooting and maintenance of the electric control system; the test experiment with more complexity and high cost can be completed, and the electric control system can be tested more comprehensively.
Drawings
FIG. 1 is a schematic diagram of the present invention;
fig. 2 is a logical block diagram of the present invention.
Detailed Description
The invention discloses a megawatt wind power and electricity control system workshop intelligent detection platform based on a hardware-in-loop simulation method, which mainly comprises a fan actual electric control cabinet, a frequency conversion electric control cabinet and a pitch control cabinet, an upper computer which is communicated with a real-time simulation target machine through an Ethernet and manages the running state and the like of the real-time simulation target machine, a dragging platform system which comprises a prime motor, a generator, a control prime motor rotating speed frequency converter, a rotating speed sensor and a pulse frequency adjusting module, and an electric control system signal simulation unit which consists of a real-time simulation target machine, an auxiliary signal output unit, a signal conversion circuit and a fault implantation circuit; the electric control cabinets are connected through optical fibers, signals of the real-time target simulation machine are connected with the fan main control cabinet and the variable pitch control cabinet through the signal conversion circuit and the fault implantation circuit, and are connected with the frequency converter in the dragging platform to output signals for controlling the rotating speed of the prime motor. The invention can lead the electric control system to realize the real-time operation under the full working condition under the workshop condition, carry out the intelligent detection on the whole wind turbine electric control system, simultaneously carry out the verification by injecting various faults, carry out the electric control and mechanical equipment technical training on wind turbine workers, and carry out the corresponding technical transformation experiment and verification and the like in time. The software required by the invention adopts the conventional software.
The various devices (apparatuses) employed in the present invention are specifically as follows:
a prime mover: three-phase motor, model M2QA160M 4A.
A generator: a doubly-fed three-phase induction generator, model M2QA160M 4A.
Frequency conversion cabinet: current transformer manufactured by Ingeteam corporation.
A simulation machine: real-time target simulation machine.
An upper computer: and the desktop computer is used for managing the real-time target simulation machine.
Become oar switch board: pitch control cabinets manufactured by Ingeteam corporation.
An auxiliary signal output unit: siemens PLC digital and analog signal output module.
The signal conversion circuit: the device consists of a 24V relay, a direct current signal isolation transmitter and an interface terminal.
A fault implantation circuit: the switch is mainly composed of physical switches to realize on-off of each path.
Main control cabinet: main control cabinets manufactured by Ingeteam corporation.
A rotating speed encoder: and outputting a 24V pulse signal.
A speed measurement sensor: and outputting a 24V pulse signal.
Example 1:
the invention provides a megawatt wind electric control system workshop intelligent detection platform based on a hardware-in-loop simulation method, which mainly comprises a wind turbine actual electric control system, an upper computer, a dragging platform system, an electric control system signal simulation unit, a fault implantation circuit and a power supply system, wherein the upper computer is communicated with a real-time simulation target machine through an Ethernet and manages the running state of the real-time simulation target machine, the dragging platform system comprises a prime motor, a generator, a control prime motor rotating speed frequency converter, a rotating speed sensor and a pulse frequency adjusting module, and the electric control system signal simulation unit consists of the real-time simulation target machine, an auxiliary signal output unit, a signal conversion circuit and the fault implantation circuit; the electric control cabinets are connected through optical fibers, signals of the real-time target simulation machine are connected with the fan main control cabinet and the variable pitch control cabinet through the signal conversion circuit and the fault implantation circuit, and are connected with the frequency converter in the dragging platform to output signals for controlling the rotating speed of the prime motor.
The electric control system signal simulation unit comprises a real-time simulation target machine, an auxiliary signal output unit, a signal conversion circuit and a fault implantation circuit. The real-time simulation target machine comprises a wind turbine generator real-time simulation model set up in a Matlab/simulink environment, and the wind turbine generator real-time simulation model comprises wind load, pitch variation, yaw and other hydraulic real-time simulation models of the wind turbine generator. The auxiliary signal output unit comprises auxiliary fan analog signals and mainly comprises analog quantity such as temperature and pressure and digital quantity analog signals such as overload, pressure switch and liquid level switch; the signal conversion circuit can convert the input and output signal types of the real-time target machine, the auxiliary signal output unit and the electric control system mutually, and realizes synchronous real-time transmission of front and rear signals; the fault implantation circuit is mainly used for setting a certain signal to be in fault when the platform runs so as to achieve the purpose of verifying fault characteristics.
The invention discloses a dragging platform system which comprises a prime motor, a generator, a frequency converter for controlling the rotating speed of the prime motor, a rotating speed sensor and a pulse frequency adjusting module. And the prime mover rotation speed control frequency converter receives a wind wheel rotation speed signal output by a wind load model in the real-time simulation target machine, and further controls the rotation speed of the prime mover. The pulse frequency adjusting module is mainly used for reducing the frequency of a high-rotating-speed pulse signal according to the speed ratio of the fan speed increaser, converting the high-rotating-speed pulse signal into a low-rotating-speed signal, simulating the rotating speeds of the high-rotating-speed shaft and the low-rotating-speed shaft of the fan and providing a signal for an electric control system. The actual electric control system of the fan comprises a main controller electric control cabinet, a variable pitch control cabinet, a frequency conversion cabinet and safety chain modules.
Further, the invention provides an intelligent detection hardware-in-loop test platform for an electric control system of a megawatt wind turbine, which specifically comprises the following contents:
as shown in fig. 1, the schematic diagram of the intelligent detection platform of the megawatt wind power and electronic control system workshop based on the hardware-in-loop simulation method of the invention comprises a real-time target simulator of real-time simulation models of wind load, pitch variation, yaw and other hydraulic pressures of a wind turbine generator; the upper computer is used for the intelligent detection platform to start and stop, run management, data monitoring and other functions and the real-time target simulator to communicate through the Ethernet; the frequency converter is used for receiving a signal which is output by the real-time target simulator and controls the rotating speed of the prime motor; the prime motor is connected with the generator through a coupling; two rotation speed sensors are provided, one rotation speed sensor is used as a high-speed shaft rotation speed signal and directly transmitted to the main control cabinet, and the other rotation speed sensor is used for reducing the frequency according to the speed ratio of the fan speed increaser through the pulse frequency adjusting module and transmitting the frequency as a low-speed shaft rotation speed signal to the main control cabinet; a pulse signal generated by an encoder arranged at the tail end of the generator is transmitted to the frequency conversion cabinet and the main control cabinet; the main control cabinet is respectively communicated with the variable pitch control cabinet and the variable frequency cabinet through optical fibers; the auxiliary signal output unit, the signal conversion circuit and the fault implantation circuit are respectively used for generating auxiliary signals of the fan, converting signal types and artificially setting signal faults.
The real-time target simulator comprises a wind turbine generator real-time simulation model set up in a Matlab/simulink environment, and the wind turbine generator real-time simulation model comprises wind load, pitch, yaw and other hydraulic real-time simulation models of the wind turbine generator. The real-time simulation host computer is provided with an analog and digital input and output interface, a programmable logic interface, a communication interface and the like; the functions of model building, model compiling, code generating, node distributing, code downloading, simulation executing, parameter on-line adjusting and the like can be carried out under corresponding management software.
As shown in fig. 2, a logic diagram of the intelligent detection platform for the megawatt wind power and electronic control system workshop based on the hardware-in-the-loop simulation method of the present invention provides the transmission parameters and the logic relationship among the modules in the whole platform. The fan mechanical model is a model for simulating the operation in a target machine in real time, and mainly comprises model wind load models of a unit wind load, a hydraulic pitch, a hydraulic yaw, a hydraulic brake and the like, the model wind load models output a prime mover rotating speed signal for controlling a motor to drag a platform, the prime mover drags a generator, and the generated electricity is transmitted to a power grid through a current conversion system. The main control system and the converter system coordinate with each other to adjust the reactive power and the active power, connect to the grid and communicate with the variable pitch system, the variable pitch system and the variable pitch model in the simulation system carry out data interaction, control the change of the pitch angle and transmit the data to the main control system, and the modules transmit the parameters according to the relation of figure 2.
The invention discloses an integrated electric control cabinet of an electric control system signal simulation unit in a megawatt wind power electric control system workshop intelligent detection platform based on a hardware-in-loop simulation method. The upper computer comprises real-time target machine management software for model establishment, I/O (input/output) setting, compiling, importing into the real-time target machine and the like; modifying the real-time target machine model parameters on line; and fault diagnosis software of the tested system and the like. The signal conversion circuit 2 can convert the input and output transmission signal types of the real-time target machine and the electric control system into consistency, and realizes synchronous real-time transmission of the signals of the real-time target machine and the electric control system. The auxiliary signal output unit (including fault implantation) is used for generating a large number of sensor signals (simple models) related to temperature, pressure and the like; overload signals, pressure switch signals, etc. of various fan implementation objects and for modulated signals to generate soft faults. The real-time target machine (high-performance) is a real-time target simulator, is used for operating main part models of a unit such as a wind speed model, a wind direction model, a pitch changing model, a yaw model and a wind wheel load model, and comprises other complex models such as a hydraulic station and related hydraulic models thereof. The side ports mainly include I/O ports, communication ports, power ports, and the like.
However, the foregoing detailed description is given by way of example only, to better enable a person skilled in the art to understand the patent, and should not be taken as limiting the scope of the patent; any equivalent alterations or modifications made according to the spirit of the disclosure of this patent are intended to be included in the scope of this patent.
Claims (2)
1. The utility model provides a megawatt level wind turbine electrical system intelligent detection hardware is at ring test platform which characterized in that: the motor comprises a prime motor, wherein an output shaft of the prime motor is in transmission connection with an input shaft of a generator, an electric signal output end of the generator is connected with a frequency conversion cabinet, a control end of the prime motor is connected with a frequency converter so as to control the rotating speed of the prime motor, and the frequency converter is also connected with an upper computer through a simulation machine; the system also comprises a variable pitch control cabinet and an auxiliary signal output unit, wherein the variable pitch control cabinet, the auxiliary signal output unit and the simulator are respectively connected with the main control cabinet through a signal conversion circuit and a fault implantation circuit in sequence, and the main control cabinet is also communicated with the variable pitch control cabinet and the frequency conversion cabinet through optical fibers; wherein, a rotating speed encoder is arranged on the generator and is respectively connected with the frequency conversion cabinet and the main control cabinet; wherein the output shaft of the prime motor is provided with a speed measuring sensor which is connected with the main control cabinet.
2. The megawatt wind turbine electrical system intelligent detection hardware-in-loop test platform of claim 1, characterized in that: wherein the speed sensor has 2, and one of them speed sensor passes through pulse frequency control module and is connected with the main control cabinet, and another speed sensor is direct to be connected with the main control cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111501626.7A CN114326657A (en) | 2021-12-09 | 2021-12-09 | Intelligent hardware-in-loop test platform for megawatt wind turbine electric control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202111501626.7A CN114326657A (en) | 2021-12-09 | 2021-12-09 | Intelligent hardware-in-loop test platform for megawatt wind turbine electric control system |
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| CN114326657A true CN114326657A (en) | 2022-04-12 |
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| CN202111501626.7A Pending CN114326657A (en) | 2021-12-09 | 2021-12-09 | Intelligent hardware-in-loop test platform for megawatt wind turbine electric control system |
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