Practical training teaching evaluation system and method for wind power generation

Abstract

In view of the randomness of actual wind turbine failure types and the slow growth of operation and maintenance personnel, the present invention provides a practical training teaching evaluation system and method for wind power generation; one end of the channel switch is electrically connected to the server, and the other end of the channel switch is electrically connected to the fan system loop control module; the channel switch is used to switch the corresponding input signal between the analog system and the fan system; the analog quantity module, the switch quantity module and the pulse quantity module are electrically connected to the loop analog quantity module, the loop switch quantity module and the loop pulse quantity module respectively; the analog fault signal set by the server is transmitted to the loop analog quantity module, the loop switch quantity module and the loop pulse quantity module through the analog quantity module, the switch quantity module and the pulse quantity module; the loop PLC module is electrically connected to the server, and the loop PLC module is used to feed back the corresponding fault condition to the server; the server is electrically connected with an analog control terminal, a monitor and a display screen.

Description

Technical Field

[0001] The invention discloses a training teaching evaluation system and method for wind power generation, belonging to the technical field of wind power generation. Background Art

[0002] With the rapid development of the wind power industry in recent years, the demand for talents is urgent. How to quickly cultivate skilled talents that meet the needs of the industry has become the goal that all companies have been pursuing. How to achieve hierarchical training and form an effective talent echelon, and at the same time innovate ideas in training methods to enable skilled talents to improve their skills in the fastest, most economical and efficient way, and objectively and effectively assess the level of employees' skills, form a benign management of skilled talents, enable personnel to have a full and clear understanding of their own abilities, and better improve the enthusiasm of employees to learn skills, has always been the focus of research by leaders in the wind power industry.

[0003] Improving skills cannot be achieved behind closed doors or overnight. It requires the combination of theory and practice, a lot of practice and long-term experience accumulation. Summary of the invention

[0004] Aiming at the situation that actual wind turbine failure types are random and the growth rate of operation and maintenance personnel is slow, the present invention provides a practical training teaching evaluation system and method for wind power generation.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a practical training teaching evaluation system for wind power generation, including a fan system loop control module, the fan system loop control module includes a loop analog module, a loop switch module, a loop pulse module and a loop PLC module, the loop analog module, the loop switch module and the loop pulse module are all electrically connected to the loop PLC module, and the loop PLC module controls the corresponding execution components to act through the loop analog module, the loop switch module and the loop pulse module;

[0006] It also includes a fan system analog control module, which includes an analog quantity module, a switch quantity module, a pulse quantity module, a server and a channel switch. The analog quantity module, the switch quantity module, the pulse quantity module and the channel switch are all electrically connected to the server. One end of the channel switch is electrically connected to the server, and the other end of the channel switch is electrically connected to the fan system loop control module. The channel switch is used to switch the corresponding input signal between the analog system and the fan system. The analog quantity module, the switch quantity module and the pulse quantity module are electrically connected to the loop analog quantity module, the loop switch quantity module and the loop pulse quantity module respectively. The analog quantity module, the switch quantity module and the pulse quantity module transmit the analog fault signal set by the server to the loop analog quantity module, the loop switch quantity module and the loop pulse quantity module respectively through the analog quantity module, the switch quantity module and the pulse quantity module. The loop PLC module is electrically connected to the server, and the loop PLC module is used to feed back the corresponding fault condition to the server. The server is electrically connected with an analog control terminal, a monitor and a display screen. The analog control terminal is used to set and reset the analog fault. The monitor is used to monitor the working condition of the execution component. The display screen is used to display the fault information and the monitoring screen of the monitor.

[0007] The present invention provides a practical training teaching evaluation method for wind power generation, which is implemented according to the following steps:

[0008] The first step is to check the circuit connections between modules and components, debug and check various simulated fault conditions, and ensure that the wind turbine simulation system can work accurately;

[0009] Step 2: Select the assessment class and personnel through the simulation control terminal;

[0010] Step 3: Set a specific fault simulation state on the simulation control terminal, and the simulation control terminal switches the fan system to the simulation system through the server control channel switcher. At the same time, the server transmits the simulated fault signal from the analog quantity module and / or the switch quantity module and / or the pulse quantity module to the loop analog quantity module and / or the loop switch quantity module and / or the loop pulse quantity module, and generates a fault through the loop PLC control of the corresponding execution component;

[0011] Step 4: After the staff is in place, the server timing starts. If the staff eliminates the fault of the execution component within the specified time and according to the standard steps, the server is judged as qualified and the corresponding fault is reset in the simulation system. If the fault elimination is completed within the time limit or not completed, the server is judged as unqualified and the corresponding fault is reset in the simulation system.

[0012] Step 5: Repeat the operation in step 3 to achieve continuous assessment or teaching, and set multiple fault points at the same time;

[0013] Step 6: The assessor will score the trainee's processing steps and safety operation specifications through on-site assessment or remote video monitoring assessment.

[0014] Compared with the prior art, the present invention has the following beneficial effects.

[0015] 1. The present invention uses a fault simulation system to simulate the fault setting mode of actual fault nodes and conducts a large number of targeted fault simulation training. Employees can practice and master the phenomena and treatment methods of common fan faults in a short time. This greatly shortens the time for employees to accumulate experience and makes the skills level of employees grow more efficiently.

[0016] 2. The present invention uses a fault simulation system to conduct training and assessment of fault settings. This not only reduces the damage to spare parts and terminal blocks caused by frequent replacement of bad parts or wiring disassembly and assembly in previous fan training, but also more effectively and fairly reflects the actual skill level of employees, greatly improving the economy and efficiency of training. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below in conjunction with the accompanying drawings.

[0018] Figure 1 It is a schematic diagram of the structure of the present invention.

[0019] Figure 2 It is a schematic structural diagram of an embodiment of the present invention.

[0020] In the figure: 1 is the fan system loop control module, 11 is the loop analog module, 12 is the loop switch module, 13 is the loop pulse module, 14 is the loop PLC, 2 is the fan system analog control module, 21 is the analog module, 22 is the switch module, 23 is the pulse module, 24 is the server, 25 is the channel switch, 26 is the analog control terminal, 27 is the monitor, and 28 is the display screen. DETAILED DESCRIPTION

[0021] like Figure 1 As shown, the present invention is a practical training teaching evaluation system for wind power generation, including a fan system loop control module 1, the fan system loop control module 1 includes a loop analog module 11, a loop switch module 12, a loop pulse module 13 and a loop PLC 14 module, the loop analog module 11, the loop switch module 12 and the loop pulse module 13 are all electrically connected to the loop PLC 14 module, and the loop PLC 14 module controls the corresponding execution components to act through the loop analog module 11, the loop switch module 12 and the loop pulse module 13;

[0022] It also includes a fan system analog control module 2, which includes an analog module 21, a switch module 22, a pulse module 23, a server 24 and a channel switch 25. The analog module 21, the switch module 22, the pulse module 23 and the channel switch 25 are all electrically connected to the server 24, one end of the channel switch 25 is electrically connected to the server 24, and the other end of the channel switch 25 is electrically connected to the fan system loop control module 1. The channel switch 25 is used to switch the corresponding input signal between the analog system and the fan system. The analog module 21, the switch module 22 and the pulse module 23 correspond to the loop analog module 11, the loop switch module 12 and the loop pulse module 13. The quantity modules 13 are electrically connected, and the analog fault signal set by the server 24 is correspondingly transmitted to the loop analog quantity module 11, the loop switch quantity module 12 and the loop pulse quantity module 13 through the analog quantity module 21, the switch quantity module 22 and the pulse quantity module 23. The loop PLC14 module is electrically connected to the server 24, and the loop PLC14 module is used to feed back the corresponding fault condition to the server 24. The server 24 is electrically connected with an analog control terminal 26, a monitor 27 and a display screen 28. The analog control terminal 26 is used to set and reset the analog fault, the monitor 27 is used to monitor the working condition of the execution component, and the display screen 28 is used to display the fault information and the monitoring screen of the monitor 27.

[0023] The present invention provides a practical training teaching evaluation method for wind power generation, which is implemented according to the following steps:

[0024] The first step is to check the circuit connections between modules and components, debug and check various simulated fault conditions, and ensure that the wind turbine simulation system can work accurately;

[0025] Step 2: Select the assessment class and personnel through the simulation control terminal 26;

[0026] Step 3: Set a specific fault simulation state on the simulation control terminal 26, and the simulation control terminal 26 controls the channel switch 25 through the server 24 to switch the fan system to the simulation system. At the same time, the server 24 transmits the simulated fault signal from the analog quantity module 21 and / or the switch quantity module 22 and / or the pulse quantity module 23 to the loop analog quantity module 11 and / or the loop switch quantity module 12 and / or the loop pulse quantity module 13, and controls the corresponding execution component to generate a fault through the loop PLC 14;

[0027] Step 4: After the staff is in place, the server 24 starts timing. If the staff eliminates the fault of the execution component within the specified time and according to the standard steps, the server 24 is judged as qualified and the corresponding fault is reset in the simulation system. If the fault elimination is completed within the time limit or not completed, the server 24 is judged as unqualified and the corresponding fault is reset in the simulation system;

[0028] Step 5: Repeat the operation in step 3 to achieve continuous assessment or teaching, and set multiple fault points at the same time;

[0029] Step 6: The assessor will score the trainee's processing steps and safety operation specifications through on-site assessment or remote video monitoring assessment.

[0030] The present invention is described in detail below in conjunction with specific implementation methods.

[0031] like Figure 2 As shown, the present invention is a training teaching evaluation system for wind power generation, including a wind power generation fan control loop control module, the wind power generation fan control loop control module includes a 24V signal, a switch quantity actual measurement point, a digital quantity input card and a main control PLC, the 24V signal is electrically connected to the switch quantity actual measurement point, used to transmit a signal to the switch quantity actual measurement point, the switch quantity actual measurement point is electrically connected to the digital quantity input card, the digital quantity input card is electrically connected to the main control PLC, the 24V signal is transmitted to the main control PLC through the switch quantity actual measurement point through the digital quantity input card, if the digital quantity input card does not receive the 24V signal, the main control PLC reports a corresponding fault, including a switch quantity module, an analog quantity module and a temperature simulation module, a relay, a training PLC module, a data server and a channel switch, the switch quantity module is electrically connected to the wind power generation fan The control loop control modules are electrically connected, and a relay is arranged on the circuit between the switch quantity module and the wind turbine control loop control module. The relay is electrically connected to the analog control end through the switch quantity module. The analog control end controls the relay through the switch quantity module to achieve electrical isolation between the analog system and the fan system. The analog control end is electrically connected to the training PLC module through the data server. The training PLC module is electrically connected to the switch quantity module. An analog quantity module and a temperature simulation module are arranged in parallel between the training PLC module and the switch quantity module. The training PLC module and the switch quantity module are both electrically connected to the analog quantity module and the temperature simulation module. The switch quantity module is electrically connected to the relay through a channel switch. The analog command is issued through the analog control end, and the switch quantity module sends a corresponding analog signal to the wind turbine control loop control module.

[0032] The relay is arranged in series between the actual measurement point of the switching quantity and the digital quantity input card.

[0033] The data server is electrically connected to a video monitoring module, which is used to simulate the control end to monitor the entire process of employees operating equipment and using tools.

[0034] The present invention relates to a practical training teaching evaluation method for wind power generation, which is implemented according to the following steps:

[0035] The first step is to check the circuit connections between modules and components, debug and check various simulated fault conditions, and ensure that the simulation system can work accurately;

[0036] Step 2: Select the assessment class and personnel through the simulation control terminal;

[0037] Step 3: Set a specific fault simulation state on the analog control end, and the switch module switches from the fan system to the simulation system through the analog control end control relay. At the same time, after receiving the signal from the analog control end, the training PLC module will retrieve the corresponding signal according to the fault simulation state and send it to the analog module and the temperature analog module. The analog module and the temperature analog module output the corresponding analog signal to the switch module and transmit it to the wind turbine control loop control module through the channel switch, and input the set analog signal value to the digital input card, and the wind turbine will immediately generate a corresponding fault;

[0038] Step 4: After the staff is in place, the timer starts. If the staff eliminates the fault within the specified time and according to the standard steps, the simulation control terminal is judged as qualified and the corresponding fault is reset in the simulation system. If the fault elimination is completed within the time limit or not completed, the simulation control terminal is judged as unqualified and the corresponding fault is reset in the simulation system.

[0039] Step 5: Repeat the operation in step 3 to achieve continuous assessment or teaching, and set multiple fault points at the same time;

[0040] Step 6: The assessor will score the trainee's processing steps and safety operation specifications through on-site assessment or remote video monitoring assessment.

[0041] The training teaching evaluation system of the present invention includes a complete set of switch quantity modules, analog quantity modules, temperature simulation modules, relays, training PLC modules, data servers, video monitoring modules and evaluation software. The switch quantity module is transmitted to the fan control loop through the relay to realize the electrical isolation of the simulation system and the fan system. The analog quantity module uses a constant current source chip such as LM334 to generate a 4-20ma signal, and realizes the switching of voltage and current analog quantities through a precision resistor plus a switch. The temperature simulation module configures a precision silver contact relay through a precision resistor network to realize the switching of different resistance values ​​to simulate the resistance value of PT100 at each temperature monitoring point on the fan. All modules are controlled by communicating with the host computer software module using the 485 total Modbus protocol, and automatic remote fault setting and fault reset can be realized. The current ones include 80 groups of switch quantity signals, 7 groups of analog quantity signals, and 11 groups of temperature signals. The number of channels in the later stage can be adjusted according to the number of signals that the actual fan needs to simulate, and the simulation of all fan fault types can be realized.

[0042] The working mechanism of each module is explained in detail below.

[0043] 1. Switching module signal control

[0044] Existing fan control logic:

[0045] The actual measurement points of the switch quantity on the fan are mainly: differential pressure switch, oil level gauge switch, wear sensor, circuit breaker feedback contact, etc. Generally, when the equipment is normal, the module is turned on and the 24V signal is transmitted back to the corresponding digital input card. When the corresponding sensor or switch changes position, the 24V signal is disconnected, and the corresponding digital input card fails to receive the 24V signal and the main control PLC reports the corresponding fault.

[0046] The control logic of the present invention is as follows: a group of relays are connected in series between the actual measurement point and the digital quantity input card, and the relay is controlled to close and close by controlling the switch quantity module through software. The actual fault occurring at the actual measurement point is simulated by cutting off the 24V feedback signal, and the control circuit disconnection, virtual connection, short circuit to ground and other faults can be simulated at the same time.

[0047] 2. Analog module signal control

[0048] Existing fan control logic: The actual analog measurement points on the fan are mainly: PT100, pressure sensor, anemometer, wind vane, vibration sensor, etc. Measure the wind speed, wind direction, cabin vibration, pressure, temperature, etc. when the fan is running. The actual measurement point converts the measured analog information into a 4-20mA electrical signal and transmits it to the analog input card. The PLC calculates the actual analog value according to the pre-set function and determines whether it is a fault by comparing it with the fan set value.

[0049] The control logic of the present invention is as follows: a channel switch is connected in series between the actual measurement point and the analog input card. The channel switch can disconnect the analog signal originally transmitted back from the actual measurement point of the wind turbine, and transmit the signal generated by the analog simulation module of the evaluation system itself back to the analog input card. The analog simulation module can output a specific value according to the administrator's teaching or assessment requirements, so that the wind turbine generator set reports a specific fault.

[0050] For some analog signal modules, before connecting to the main control PLC, the original signal output module can be cut off by connecting the channel switch in series with the analog module. Sending the simulated analog quantity to the main control PLC can simulate a series of analog quantity signals such as wind speed, wind direction, cabin vibration, system pressure, etc. The signal generated by the simulation can simulate faults caused by signal disconnection, short circuit, over-value or under-value.

[0051] 3. Temperature simulation module

[0052] The fan temperature measurement is mainly realized by PT100 resistor, which is combined with a resistor and a relay network to produce different resistance values, simulate the resistance value of PT100, and thus generate temperature. It can simulate temperature signal disconnection, short circuit, over-temperature, under-temperature and other faults.

[0053] 4. Video surveillance module

[0054] The same local area network coverage of video surveillance is achieved in the wind turbine cabin, tower bottom cabinet, training room and other places. The whole process of employees operating equipment and tools is monitored. Through monitoring, operational problems such as improper tool selection, improper operation, and improper wiring inspection sequence can be found. Supervise employee behavior and provide a basis for supervising employee behavior and evaluation and scoring. Video surveillance is accessed through the on-site wireless or wired communication network and displayed on the web interface.

[0055] 5. Data Server

[0056] The training teaching evaluation system of the present invention has entered the fan fault reported by disconnecting the corresponding node into the data server in advance. When operating, the personnel only need to select the corresponding fan fault name, and the system can control the corresponding switch quantity or analog quantity module to simulate the corresponding actual fault.

[0057] When operating, personnel only need to connect to the internal LAN, and then open the client through the mobile phone or computer web page to set the fault. There is no need to download the APP or connect to the external network in advance.

[0058] Evaluation system and fault setting software of the present invention:

[0059] The background communication program uses a Java Web program integrated with the web interface to achieve communication with the hardware, database storage and reading, and interface display. The background database stores system basic information, candidate information, test scores, fault-hardware correspondence, fault handling methods, fault handling procedures, and tool usage. Users set faults in the interface operation and send instructions to the device through the background Java Modbus program, thereby generating actual hard faults. The front-end web interface is developed using HTML5, and the development process takes into account the computer browser, mobile browser, and Pad browser for adaptation to ensure that teachers can operate and view in the classroom or on site.

[0060] Among them, the interface function modules are mainly as follows:

[0061] 1. Fault settings

[0062] The corresponding relationship between the hardware module and the corresponding wind turbine fault is usually set when the system is installed. It can simulate all faults of the wind turbine nacelle cabinet, wind turbine tower bottom cabinet, gearbox system, generator system, hydraulic station system, pitch system, and simulate some faults of the inverter system.

[0063] 2. Fault simulation and reset

[0064] You can select different types of fan faults. After the selection is completed, click Fault Simulation to set the affected switch quantity and analog quantity (the analog quantity can be manually entered) to the fault state, thereby causing the fan to fail. It has the function of setting multiple fault points at the same time, resetting different faults separately or resetting all fault points at the same time.

[0065] 3. Exam operation procedures and troubleshooting completion timing and score records.

[0066] You can enter the student information in advance, select the exam start, and list the inspection process for the corresponding faults of the student's current exam. The teacher can compare and judge the student's operation steps with the standard process and the prescribed processing time. Finally, the student's score is given and recorded based on the comprehensive inspection steps and the time used for fault processing. After the student finds the cause of the fault, the score is recorded and the system is reset.

[0067] The present invention uses a fault simulation system to simulate the fault setting mode of actual fault nodes and conducts targeted large-scale fault simulation training. Employees can practice and master the phenomena and treatment methods of common fan faults in a short time. This greatly shortens the time for employees to accumulate experience and makes the skills level of employees grow more efficiently.

[0068] The present invention uses a fault simulation system to perform training and assessment on fault settings. This not only reduces the damage to spare parts and terminal blocks caused by frequent replacement of bad parts or wiring disassembly and assembly in previous fan training, but also can more effectively and fairly reflect the actual skill level of employees, greatly improving the economy and efficiency of training.

[0069] The present invention can set different faults for the pitch system, yaw system, gearbox cooling circulation system, generator control and frequency conversion system and main control system, and realize the excitation and resetting of the faults through the switch quantity module.

[0070] The above shows and describes the basic principle, main features and advantages of the present invention, and the standard parts used in the present invention can be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0071] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention.

Claims

1. A training and teaching evaluation system for wind power generation, characterized in that: The invention comprises a fan system loop control module (1), wherein the fan system loop control module (1) comprises a loop analog quantity module (11), a loop switch quantity module (12), a loop pulse quantity module (13) and a loop PLC (14) module, wherein the loop analog quantity module (11), the loop switch quantity module (12) and the loop pulse quantity module (13) are all electrically connected to the loop PLC (14) module, and the loop PLC (14) module controls corresponding execution components to perform actions through the loop analog quantity module (11), the loop switch quantity module (12) and the loop pulse quantity module (13); The fan system analog control module (2) further comprises an analog quantity module (21), a switch quantity module (22), a pulse quantity module (23), a server (24) and a channel switch (25). The analog quantity module (21), the switch quantity module (22), the pulse quantity module (23) and the channel switch (25) are all electrically connected to the server (24). One end of the channel switch (25) is electrically connected to the server (24), and the other end of the channel switch (25) is electrically connected to the fan system loop control module (1). The channel switch (25) is used to switch between the analog system and the fan system in response to input signals. The analog quantity module (21), the switch quantity module (22) and the pulse quantity module (23) are corresponding to the loop analog quantity module (11), the loop switch quantity module (12) and the loop The analog quantity module (21), the switch quantity module (22) and the pulse quantity module (23) are electrically connected to each other, and the analog fault signal set by the server (24) is correspondingly transmitted to the loop analog quantity module (11), the loop switch quantity module (12) and the loop pulse quantity module (13) through the analog quantity module (21), the switch quantity module (22) and the pulse quantity module (23). The loop PLC (14) module is electrically connected to the server (24), and the loop PLC (14) module is used to feed back the corresponding fault condition to the server (24). The server (24) is electrically connected to an analog control terminal (26), a monitor (27) and a display screen (28). The analog control terminal (26) is used to set and reset the analog fault, the monitor (27) is used to monitor the working condition of the execution component, and the display screen (28) is used to display the fault information and the monitoring screen of the monitor (27).

2. A training teaching evaluation method for a training teaching evaluation system for wind power generation according to claim 1, characterized in that: Follow these steps to implement: The first step is to check the circuit connections between modules and components, debug and check various simulated fault conditions, and ensure that the wind turbine simulation system can work accurately; Step 2: Select the assessment class and personnel through the simulation control terminal (26); Step 3: A specific fault simulation state is set on the simulation control terminal (26), and the simulation control terminal (26) controls the channel switcher (25) through the server (24) to switch the fan system to the simulation system. At the same time, the server (24) transmits the simulated fault signal from the analog quantity module (21) and / or the switch quantity module (22) and / or the pulse quantity module (23) to the loop analog quantity module (11) and / or the loop switch quantity module (12) and / or the loop pulse quantity module (13), and controls the corresponding execution component to generate a fault through the loop PLC (14); Step 4: After the staff is in place, the server (24) starts timing. If the staff eliminates the fault of the execution component within the specified time and according to the standard steps, the server (24) is judged as qualified and the corresponding fault is reset in the simulation system. If the fault elimination is completed within the time limit or not completed, the server (24) is judged as unqualified and the corresponding fault is reset in the simulation system; Step 5: Repeat the operation in step 3 to achieve continuous assessment or teaching, and set multiple fault points at the same time; Step 6: The assessor will score the trainee's processing steps and safety operation specifications through on-site assessment or remote video monitoring assessment.

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