CN214152189U

CN214152189U - Little electric wire netting control device of new forms of energy for teaching scientific research

Info

Publication number: CN214152189U
Application number: CN202023236575.3U
Authority: CN
Inventors: 章仕起; 宋柳
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-29
Filing date: 2020-12-29
Publication date: 2021-09-07
Anticipated expiration: 2030-12-29

Abstract

The utility model relates to a new forms of energy microgrid control device for teaching and scientific research, by light storage system, wind power system, load system, the four bibliographic system parts constitute, wherein, light storage system includes shot-light, photosensitive sensor, solar cell panel, control circuit, battery, servo motor, servo controller, first step motor controller; the wind power system comprises a three-phase asynchronous motor, a three-phase synchronous generator, a frequency converter, a second alternating current contactor, a silicon controlled rectifier, a transformer and a synchronous meter; in the load system, the three-phase adjustable resistor is connected with a three-phase synchronous generator through a third alternating current contactor; in the interconnection system, one end of a first alternating current contactor is connected with the synchronous generator and the load system, and the other end of the first alternating current contactor is connected with the municipal power supply. The utility model discloses a wind-powered electricity generation integration show control that is incorporated into power networks, equipment operation is stable, reliable to make photovoltaic follow spot, wind-powered electricity generation process of being incorporated into power networks more directly perceived, concrete, the student of being convenient for understands.

Description

Little electric wire netting control device of new forms of energy for teaching scientific research

Technical Field

The utility model relates to a teaching equipment technical field especially relates to a little electric wire netting controlling means of new forms of energy for teaching scientific research.

Background

The national emphasis on new energy and the implementation of new renewable energy projects everywhere result in the need for a large number of professionals in the new energy sector. But since various schools have not opened new energy related courses for a long time, professional technicians cannot meet the market demands. With the development of new energy professions in various types and higher research institutes, schools have great demands on experimental equipment and teaching demonstration systems related to the new energy professions. However, the teaching instrument equipment factories in China rarely have corresponding related equipment, or the independent and practical use of the related equipment is greatly different.

At present, teaching practice processes such as wind power generation and photovoltaic power generation are mutually independent, and teaching equipment on the existing market is inconvenient for students to understand and research new energy power generation control grid-connected processes. Although a new energy video teaching, scientific research and learning platform exists on the network, the important processes of power generation, control, grid connection and the like cannot be intuitively understood. Therefore, the existing teaching equipment causes the lack of demonstration authenticity in the new energy teaching demonstration process, and then the device teaching quality is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a little electric wire netting control system of new forms of energy that teaching and scientific research of simulation wind power generation grid-connected, photovoltaic chasing after light electricity generation was used, has not only solved prior art and has demonstrated the problem that the authenticity is poor, the teaching quality is low carrying out new forms of energy teaching demonstration in-process, has solved moreover among the prior art because photovoltaic, wind-powered electricity generation separation show and lead to the problem that the student can not understand.

In order to achieve the above object, the utility model provides a little electric network control device of new forms of energy for teaching and scientific research, by light storage system, wind power system, load system, the four bibliographic categories of contact system divide and constitute, wherein, light storage system includes shot-light, photosensitive sensor, solar cell panel, control circuit, battery, servo motor, servo controller, first step motor controller, the shot-light reciprocates on the track and simulates that the east rises west and falls, the shot-light is connected with first step motor drive, first step motor is connected with first step motor controller electricity, solar cell panel is connected with the battery, adopt two photosensitive sensor to install additional respectively in the east and west both sides of solar cell panel upper end, both sides photosensitive sensor all is connected with PLC electricity, PLC is used for detecting the voltage difference of two tunnel in the photosensitive sensor AD modules of east, west and send the signal to servo motor controller, the servo motor controller is connected with the servo motor and used for driving the servo motor to realize forward and reverse rotation operation, and the servo motor is in driving connection with the solar cell panel so as to drive the solar cell panel to rotate and realize a light following working mode; the wind power system comprises a three-phase asynchronous motor, a three-phase synchronous generator, a frequency converter, a second alternating current contactor, a silicon controlled rectifier, a transformer and a synchronous meter, the frequency converter is in driving connection with the three-phase asynchronous motor to simulate a natural wind environment, a coupling is arranged between the three-phase asynchronous motor and a rotor of the three-phase synchronous generator, the three-phase asynchronous motor drives the three-phase synchronous generator to perform corresponding synchronous operation, an AC220V power supply is converted into an AC24V power supply through a transformer, an AC24V power supply outputs a direct current power supply with adjustable voltage after being rectified by a silicon controlled rectifier to provide an excitation power supply for the three-phase synchronous generator, the synchronous meter is respectively connected with the three-phase synchronous generator and a grid to be merged for monitoring the phase difference between the electric energy output by the three-phase synchronous generator and the grid to be merged, and the second alternating current contactor is electrically connected with the PLC for controlling the grid-connected state; the load system comprises a three-phase adjustable resistor and a third alternating current contactor, and the three-phase adjustable resistor is connected with the three-phase synchronous generator through the third alternating current contactor; the contact system comprises a first alternating current contactor, one end of the first alternating current contactor is connected with the synchronous generator and the load system, and the other end of the first alternating current contactor is connected with the municipal power supply.

Preferably, the light storage system further comprises a cleaning system consisting of a second stepping motor controller, a second stepping motor, a third stepping motor controller, a third stepping motor and a rolling brush, wherein the second stepping motor controller is connected with the second stepping motor and used for controlling the rolling brush to reciprocate up and down, and the third stepping motor controller is connected with the third stepping motor and used for controlling the rolling brush to rotate.

Preferably, the wind power system further comprises a first multifunctional network power instrument and a third multifunctional network power instrument, the first multifunctional network power instrument is connected with the PLC and used for monitoring voltage, current, active power, reactive power and power frequency of the generated power of the three-phase synchronous generator in real time, and the third multifunctional network power instrument is connected with the PLC and used for monitoring voltage, current, active power, reactive power and power frequency of the generated power of the grid to be merged in real time.

Preferably, the load system further comprises a second multifunctional power meter, and the second multifunctional power meter is connected with the PLC and used for monitoring the voltage, the current, the active power, the reactive power and the power frequency of the load system.

The technical scheme provided by the utility model, following advantage has:

1. the wind power integration display control is realized, and the equipment runs stably and reliably;

2. the photovoltaic light tracking and wind power grid connection process is more visual and concrete, and is convenient for students to understand;

3. when researchers do research on related problems, only data are acquired through the equipment model, related research becomes easier to perform, and accuracy of related data is guaranteed;

4. the photovoltaic solar panel automatic cleaning system has an efficient photovoltaic panel automatic cleaning system, can effectively prevent the hot spot effect of photovoltaic, and improves the efficiency of photovoltaic power generation.

Drawings

Fig. 1 is the utility model provides a pair of little electric wire netting control device of new forms of energy for teaching scientific research's hardware block diagram.

Detailed Description

The microgrid control system shown in fig. 1 is divided into four parts, namely, a light storage system, a wind power system, a load system and a connection system. The light storage system is composed of a spotlight, a photosensitive sensor, a solar cell panel, a controller, a storage battery, an inverter, a bulb load, a servo motor, a servo controller, three stepping motors, three stepping motor controllers and a rolling brush. The wind power system is composed of a three-phase squirrel-cage asynchronous motor, a three-phase synchronous generator, a frequency converter, a second alternating current contactor, a controllable silicon, a transformer, a first multifunctional network power instrument and a synchronous meter. The load system consists of a three-phase adjustable resistor, a third alternating current contactor and a second multifunctional network power instrument. The communication system consists of a first alternating current contactor and a third multifunctional network power instrument.

The power supply system adopts a circuit breaker to realize the functions of controlling the on-off and overcurrent protection of a power supply, and the model is Mitsubishi BH-D6C 10; the control system adopts Mitsubishi PLC-FX series, one CPU module is FX2N-32MT, four A/D modules are FX2N-4A/D, and one D/A module is FX 2N-2D/A; the HMI model of the human-computer system touch screen is Mitsubishi GS 2107-WTBD; the communication system adopts an RS485 working mode, a communication module is added to convert signals into a WIFI form, the signals can be conveniently received by mobile equipment, and the equipment model is USR-W600; the solar cell panel light tracking system adopts servo control, and the models of a controller and a motor are Mitsubishi MR-JE-10A and Mitsubishi HG-KN13J-S100 respectively; the wind power system adopts a frequency converter to drive a three-phase asynchronous motor to simulate a prime mover part, and the model of the frequency converter is Mitsubishi FR-740; the excitation voltage value of the generator is controlled by the silicon controlled module; the power source of the spotlight system is a first stepping motor; the power source of the solar panel cleaning system is a second stepping motor and a third stepping motor; the method comprises the steps that a first voltage transmitter collects voltage values at two ends of a solar cell panel; the second voltage transmitter collects voltage values at two ends of a generator excitation coil; the current transducer collects the output current value of the storage battery; the intermediate relay provides a channel for the conversion of the voltage value of the control signal and the switching of the control signal corresponding to the receiving equipment; the first alternating current contactor, the second alternating current contactor and the third alternating current contactor control the connection and disconnection of a connecting line, a wind power system grid-connected line and a load working line respectively; the photovoltaic controller tracks the maximum power output point of the solar battery, supplies power to the storage battery for storing energy, and prevents the storage battery from being overcharged; the inverter may convert the DC12V power to AC220V power for common load use. The first multifunctional network electric power instrument, the second multifunctional network electric power instrument and the third multifunctional network electric power instrument respectively acquire parameters such as voltage, current, active power, reactive power and power frequency of a generator, a load and a power grid to be merged, 4 paths of 4-20 mA analog signals are output, detected signals such as voltage, current, active power, reactive power and power frequency can be transmitted to the A/D module in a self-defined mode, and PLC is used for data centralized monitoring.

1. Optical storage system implementation process

The light storage system simulates the sun east rising west falling by the spotlight which runs on the track in a reciprocating way, and the reciprocating motion of the spotlight is driven by the first stepping motor. The spot lamp irradiates the solar cell panel to generate a voltage difference between the two electrodes, the tracking of the maximum power output point of the solar cell panel is realized through the photovoltaic charging controller, the storage battery (12V7AH) is charged at the same time, and the phenomenon of overcharging of the storage battery can be prevented. Install a photosensitive sensor additional on solar cell panel upper end, when the simulation sunlight shines the sensor, east, west two parts sensor output a voltage signal respectively and get into the AD module, when east, when west illumination intensity inequality, the east of sensor, can produce a voltage difference of west both sides output, PLC detects two tunnel voltage difference in the AD module and surpasss a definite value, the signaling gives servo motor controller, drive servo motor realizes just, the reversal operation, thereby drive solar cell panel rotates, realize following spot mode, in order to obtain the biggest generated energy.

Implementation of the cleaning system: the second step motor controls the up-and-down reciprocating movement of the rolling brush, and the third step motor enables the rolling brush to rotate so as to clean up the attached dirt on the solar cell panel, so that the high-efficiency work of photovoltaic is guaranteed, and the occurrence of a hot spot effect is reduced. The cleaning mode can be divided into three types: 1. and in the automatic mode, people do not need to arrive at the field, and the solar cell panel can be cleaned regularly every day. 2. And in the manual mode, personnel are required to arrive at the field, and the solar cell panel can be cleaned at any time according to the requirement. 3. The automatic + manual mode, except regularly clearing up solar cell panel every day under this mode, still can clear up solar cell panel as required at any time. The cleaning times in the three modes can be manually set through the touch screen HMI touch screen.

2. Wind power system implementation process

The frequency converter drives the three-phase cage type asynchronous motor to simulate a natural wind environment, because the frequency converter has the function of changing the frequency of an output power supply, the stepless speed change between 0 motor and a rated rotating speed can be conveniently realized, and the adjustment of the frequency of the output power supply of the frequency converter is controlled by 0-10V voltage output by the D/A module. A shaft coupling is arranged between the rotors of the three-phase asynchronous motor and the three-phase synchronous generator, and when the motor runs, the generator is driven to correspondingly run synchronously, so that the action process of cutting magnetic lines by the rotor of the generator is completed. The AC220V power is converted into AC24V power through a transformer and enters the AC input side of the controlled silicon, 4-20 mA analog current signals are output through a D/A module on a control terminal of the controlled silicon to control the conduction angle of the AC24V power, and the DC power with adjustable voltage is output after rectification to provide an excitation power supply for the synchronous generator, so that the three-phase synchronous generator generates electricity. The grid connection process comprises the steps that voltage, current, active power, reactive power and power frequency of electricity generated by the synchronous generator are monitored in real time through the first multifunctional network power instrument, 4-20 mA analog signals are output, and the detected signals such as the voltage, the current, the active power, the reactive power and the power frequency can be sent to the A/D module in a self-defined mode to be used for data centralized monitoring of the PLC; the voltage, the current, the active power, the reactive power and the power frequency of a power grid to be merged are monitored in real time through a third multifunctional network power instrument, 4 paths of 4-20 mA analog signals are output, and the detected voltage, current, active power, reactive power and other signals can be sent to an A/D module in a self-defined mode and are used for data centralized monitoring of a PLC; when the PLC detects that the difference value between the voltage of the electric energy generated by the generator and the voltage of the power grid to be combined is within the allowable range, a grid connection allowable instruction is sent, and at the moment, the second alternating current contactor can be put into operation to control the grid connection state. When the voltage and the frequency meet grid-connected conditions, whether the phase difference between the electric energy output by the generator and a power grid to be connected meets the conditions or not is monitored through the synchronous meter, and when a pointer of the synchronous meter slowly points to an upper end synchronous indicating point, the touch screen HMI touch screen can be used for controlling the second alternating current contactor to work so as to achieve the purpose of rapid switch-on.

3. Load system implementation process

The third alternating current contactor controls whether the three-phase adjustable resistor is put into operation or not, and the resistance value is changed by manually adjusting the three-phase adjustable resistor so as to realize continuous power adjustment of 0-200W; the second multifunctional network power meter monitors the voltage, the current, the active power, the reactive power and the power frequency of the three-phase load system, 4 paths of 4-20 mA analog signals are output, and the detected signals such as the voltage, the current, the active power, the reactive power and the power frequency can be sent to the A/D module in a self-defined mode to be used for the PLC to perform data centralized monitoring.

4. Contact system implementation process

The first alternating current contactor controls whether the generator and the three-phase load can be connected with a municipal power supply or not, when the first alternating current contactor is in a working state, the generator can be subjected to grid-connected operation, and the three-phase load can obtain electric energy from the municipal power supply; when the first ac contactor is in a non-operating state, the generator may not be operated in a grid-connected mode, and the three-phase load may not obtain electric power from the municipal power supply. The third multifunctional network power meter detects voltage, current, active power, reactive power and power frequency in the connecting line, 4 paths of 4-20 mA analog signals are output, and the detected signals such as the voltage, the current, the active power, the reactive power and the power frequency can be sent to the A/D module in a user-defined mode to be used for the PLC to perform data centralized monitoring.

Claims

1. The utility model provides a little electric wire netting control device of new forms of energy for teaching scientific research which characterized in that: the solar energy and wind power combined type solar energy and wind power combined type solar energy and wind power combined type solar energy and wind power combined type solar energy, The servo motor is in driving connection with the solar cell panel in a reverse rotation mode, so that the solar cell panel is driven to rotate, and a light following working mode is realized; the wind power system comprises a three-phase asynchronous motor, a three-phase synchronous generator, a frequency converter, a second alternating current contactor, a silicon controlled rectifier, a transformer and a synchronous meter, the frequency converter is in driving connection with the three-phase asynchronous motor to simulate a natural wind environment, a coupling is arranged between the three-phase asynchronous motor and a rotor of the three-phase synchronous generator, the three-phase asynchronous motor drives the three-phase synchronous generator to perform corresponding synchronous operation, an AC220V power supply is converted into an AC24V power supply through a transformer, an AC24V power supply outputs a direct current power supply with adjustable voltage after being rectified by a silicon controlled rectifier to provide an excitation power supply for the three-phase synchronous generator, the synchronous meter is respectively connected with the three-phase synchronous generator and a grid to be merged for monitoring the phase difference between the electric energy output by the three-phase synchronous generator and the grid to be merged, and the second alternating current contactor is electrically connected with the PLC for controlling the grid-connected state; the load system comprises a three-phase adjustable resistor and a third alternating current contactor, and the three-phase adjustable resistor is connected with the three-phase synchronous generator through the third alternating current contactor; the contact system comprises a first alternating current contactor, one end of the first alternating current contactor is connected with the synchronous generator and the load system, and the other end of the first alternating current contactor is connected with the municipal power supply.

2. The micro-grid control device for the new energy source for teaching and scientific research as claimed in claim 1, wherein: the light storage system also comprises a cleaning system consisting of a second stepping motor controller, a second stepping motor, a third stepping motor controller, a third stepping motor and the rolling brush, wherein the second stepping motor controller is connected with the second stepping motor and used for controlling the rolling brush to reciprocate up and down, and the third stepping motor controller is connected with the third stepping motor and used for controlling the rolling brush to rotate.

3. The micro-grid control device for the new energy source for teaching and scientific research as claimed in claim 1, wherein: still include first multifunctional network electric power instrument and third multifunctional network electric power instrument among the wind power system, first multifunctional network electric power instrument is connected with PLC and is used for real-time supervision three-phase synchronous generator to send out voltage, electric current, active power, reactive power, mains frequency of electric energy, third multifunctional network electric power instrument is connected with PLC and is used for real-time supervision to wait to merge voltage, electric current, active power, reactive power, mains frequency of electric energy of sending out.

4. The micro-grid control device for the new energy source for teaching and scientific research as claimed in claim 1, wherein: the load system further comprises a second multifunctional electric power instrument, and the second multifunctional electric power instrument is connected with the PLC and used for monitoring the voltage, the current, the active power, the reactive power and the power frequency of the load system.