Novel power system teaching sand table device facing wind and light storage

Abstract

The utility model provides a novel electric power system teaching sand table device for wind and light storage, which comprises a power generation end device, a power utilization end device, a transmission unit, a control unit and an adjusting unit, and is characterized in that the power generation end device comprises a wind power generation simulator, a photovoltaic power generation simulator and a thermal power generation simulator; the electricity utilization end device comprises a residential electricity utilization area and a factory electricity utilization area and is connected with the residential electricity utilization area and the factory electricity utilization area through a transmission unit. According to the utility model, the development trend of wind and light storage and charging new energy is considered, the traditional sand table teaching mode is changed, the interaction effect between a user and demonstration equipment is enhanced, students can visually understand the operation logic of the whole power system, the learning experience and interestingness of the students are improved, and the visual understanding of the operation logic of the novel power system is enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the teaching sand table field especially facing the novel electric power system teaching sand table device of wind and light storage. BACKGROUND

[0002] With the transformation of global energy structure, the utilization of renewable energy is paid more and more attention. Renewable energy such as wind energy and light energy has become the main direction of future energy development due to its clean and environmental protection characteristics. However, the intermittency and instability of renewable energy bring challenges to the stable operation of the power system.

[0003] In order to achieve better teaching effect, most of the current electric power system teaching sand table adopts a more rigid model display mode for teaching, and auxiliary increases the display form such as sound, light and electricity, but lacks intuitive internal logic display and real-time monitoring function, and the system integration is low, students are difficult to intuitively observe and analyze the dynamic operation process of the new electric power system, and the traditional teaching equipment is mostly static display, lacks interactive link with students, and the operation is not intuitive, which affects the teaching effect and cannot stimulate the learning interest of students.

[0004] In summary, the current electric power system teaching sand table display is not intuitive, students are difficult to intuitively understand the operation logic of the whole electric power system, which increases the teaching difficulty and learning cost, and is not conducive to realizing diversified interaction. UTILITY MODEL CONTENT

[0005] Therefore, the utility model provides a novel electric power system teaching sand table device facing wind and light storage, fully considers the new energy development trend of wind and light storage, changes the traditional sand table teaching mode, enhances the interactive effect of the user and the demonstration equipment, and improves the application experience and interestingness.

[0006] In the first aspect, the utility model embodiment provides a novel electric power system teaching sand table device facing wind and light storage, which comprises a power generation end device, a power consumption end device, a transmission unit, a control unit and an adjusting unit, the power generation end device comprises a wind power generation simulator, a photovoltaic power generation simulator and a thermal power generation simulator, the power consumption end device comprises a residential power consumption area and a factory power consumption area, and the power generation end device is connected with the residential power consumption area and the factory power consumption area through the transmission unit;

[0007] The wind power generation simulator is connected with the control unit, is used for receiving external wind source, converts wind source energy into electric energy to obtain a wind power generation power signal, and sends the wind power generation power signal to the control unit;

[0008] The photovoltaic power generation simulator is connected with the control unit, is used for receiving external light source, converts light source energy into electric energy to obtain a photovoltaic power generation power signal, and sends the photovoltaic power generation power signal to the control unit.

[0009] The thermal power generation simulator is connected with the control unit, and is configured to receive a power generation instruction to generate power and send a thermal power generation power signal to the control unit.

[0010] The control unit is connected with the regulating unit and the power consumption terminal device respectively, and is configured to obtain a power consumption load signal of the power consumption terminal device, and determine whether the power system load is balanced according to the wind power generation power signal, the photovoltaic power generation power signal and the thermal power generation power signal, and send a regulating signal to the regulating unit in the case of imbalance.

[0011] The regulating unit is configured to perform system balance regulation according to the regulating signal.

[0012] Exemplarily, the regulating signal includes a first regulating signal, a second regulating signal and a third regulating signal, and the regulating unit includes a pumped storage simulator, a chemical energy storage unit and a manual operation unit.

[0013] Exemplarily, the control unit includes an adder, a subtracter, a determinator and a light unit, and the light unit includes a green light and a red light.

[0014] The adder is connected with the wind power generation simulator, the photovoltaic power generation simulator and the thermal power generation simulator respectively, and is configured to obtain the wind power generation power signal, the photovoltaic power generation power signal and the thermal power generation power signal, and add the power values to obtain a total power of the power generation end.

[0015] The subtracter is connected with the adder and the determinator, and is configured to obtain the total power of the power generation end, subtract the total power of the power generation end from the power consumption load to obtain a balance difference value, and send the balance difference value to the determinator.

[0016] The determinator is connected with the light unit, and is configured to determine whether the absolute value of the balance difference value reaches a preset threshold value, send a light-on signal to the red light if the preset threshold value is exceeded, and send the first regulating signal, the second regulating signal and the third regulating signal to the pumped storage simulator, the chemical energy storage unit and the manual operation unit respectively, wherein the first regulating signal includes a power generation regulating signal and a power consumption regulating signal, and send a light-on signal to the green light if the preset threshold value is not exceeded.

[0017] Exemplarily, the photovoltaic power generation simulator comprises a light source generator, a solar cell group, a first ammeter, a first voltmeter, a first signal sampler, a first voltage stabilizer and a first display device, the light source generator adjusts the light intensity according to the user instruction, the first ammeter and the first voltmeter monitor the power generation of the solar cell group, the first signal sampler sends the sampled power to the first display device to display the power value of the photovoltaic power generation simulator in real time.

[0018] Exemplarily, the wind power generation simulator comprises a small electric fan, a fan blade, a shaft coupling connected with the fan blade, a permanent magnet direct current generator connected with the shaft coupling, a second ammeter, a second voltmeter, a second signal sampler, a second voltage stabilizer and a second display device, the small electric fan adjusts the wind intensity according to the user instruction, the second ammeter and the second voltmeter monitor the power generation of the wind power generation simulator, and the second signal sampler sends the sampled power to the second display device to display the power value of the wind power generation simulator in real time.

[0019] Exemplarily, the chemical energy storage unit is used for charging and discharging according to the second adjustment signal, comprising a battery array, a charge and discharge switch connected with the battery array, a third ammeter, a third voltmeter, a third signal sampler, a third voltage stabilizer and a third display device, wherein the charge and discharge switch comprises two parallel diodes and a switch connected in series with the diodes.

[0020] Exemplarily, the pumped storage simulator comprises a water storage tank, a small water pump, a small impeller and a power generation simulator group, which is used for starting the water pump to store energy according to the power consumption adjustment signal or releasing the water amount of the water storage tank to drive the small impeller to rotate to simulate power generation when the absolute value of the balance difference is greater than the preset threshold.

[0021] Exemplarily, the manual operation unit comprises a first knob for adjusting the wind intensity of the small electric fan, a second knob for adjusting the light intensity of the light source generator, a sliding rheostat for adjusting the load of the power consumption end device, and an indicator light for indicating the operator to operate the wind intensity, the light intensity and the sliding rheostat according to the third adjustment signal, wherein the sliding rheostat is connected with the residential power consumption area and the factory power consumption area.

[0022] Exemplarily, the sliding rheostat comprises a first sliding rheostat and a second sliding rheostat, the residential power consumption area comprises an air conditioner adjustable area and an air conditioner non-adjustable area, the first sliding rheostat is connected in series with the air conditioner adjustable area, and the factory power consumption area comprises a production adjustable area and a production non-adjustable area, the second sliding rheostat is connected in series with the production adjustable area.

[0023] Exemplarily, the wind power generation simulator, the photovoltaic power generation simulator, the thermal power generation simulator, the pumped storage simulator and the chemical energy storage unit are connected in parallel circuit.

[0024] The utility model provides a novel power system teaching sand table device for wind light storage, including power generation end device, power consumption end device, transmission unit, control unit and adjusting unit, power generation end device includes wind power generation simulator, photovoltaic power generation simulator and thermal power generation simulator, and power consumption end device includes residential power consumption area and factory power consumption area, is connected through transmission unit with residential power consumption area and factory power consumption area.

[0025] Other features and advantages of the present utility model will be set forth in the following description of the application, and in part will become apparent to those skilled in the art upon examination of the following or can be learned by practice of the present utility model. The objects and other advantages of the present utility model will be realized and attained by means of the structures particularly pointed out in the description and claims thereof as well as the appended drawings.

[0026] So that the above purpose, features and advantages of the utility model can be more obvious and easy to understand, the following preferred embodiments are specifically described, and the accompanying drawings are combined as follows. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the specific embodiment of the utility model or the technical scheme in the prior art, the following will be a brief introduction to the drawings needed to be used in the specific embodiment or the prior art description, obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, under the premise of not paying creative labor, other drawings can also be obtained according to these drawings.

[0028] Figure 1 The novel power system teaching sand table device for wind light storage provided by the embodiment of the utility model is shown in the structure schematic diagram;

[0029] Figure 2 The wind power generation simulator structure schematic diagram provided by the embodiment of the utility model is shown in the structure schematic diagram;

[0030] Figure 3 The photovoltaic power generation simulator structure schematic diagram provided by the embodiment of the utility model is shown in the structure schematic diagram;

[0031] Figure 4 The control unit circuit schematic diagram provided by the embodiment of the utility model is shown in the structure schematic diagram;

[0032] Figure 5The chemical energy storage unit circuit schematic diagram provided by the utility model provides.

[0033] Icon:

[0034] 100 - power generation end device; 110 - wind power generation simulator; 120 - photovoltaic power generation simulator; 130 - thermal power generation simulator; 200 - power consumption end device; 210 - residential power consumption area; 211 - residential air conditioner adjustable area; 212 - residential non-adjustable area; 220 - factory power consumption area; 221 - production adjustable area; 222 - production non-adjustable area; 300 - transmission unit; 400 - control unit; 410 - adder; 420 - subtracter; 430 - judge; 440 - light unit; 500 - adjustment unit; 510 - pumped storage simulator; 520 - chemical energy storage unit; 530 - manual operation unit; 531 - first knob; 532 - second knob; 533 - sliding rheostat. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme of the utility model will be described clearly and completely below in combination with the drawings. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0036] With the transformation of global energy structure, the utilization of renewable energy is paid more and more attention. Renewable energy such as wind energy and light energy has become the main direction of future energy development due to its clean and environmental protection characteristics. However, the intermittency and instability of renewable energy bring challenges to the stable operation of the power system. In order to achieve better teaching effect, most of the current power system teaching sand tables adopt a relatively rigid model display mode for teaching, and auxiliary increase the display form of sound, light and electricity, but lack intuitive display and real-time monitoring function, the system integration degree is low, students are difficult to observe and analyze the dynamic operation process of the system directly, which affects the teaching effect, and most of them are static display, lack of interactive link with students, the operation is not intuitive, and the learning interest of students cannot be aroused.

[0037] In order to facilitate the understanding of the embodiment, first, the intelligent interactive table device based on real object recognition technology disclosed in the embodiment of the utility model is introduced in detail.

[0038] Reference Figure 1The novel electric power system teaching sand table device for wind light storage comprises a power generation end device 100, a power consumption end device 200, a transmission unit 300, a control unit 400 and an adjusting unit 500, the power generation end device 100 comprises a wind power generation simulation machine 110, a photovoltaic power generation simulation machine 120 and a thermal power generation simulation machine 130, the power consumption end device 200 comprises a residential power consumption area 210 and a factory power consumption area 220, and the power generation end device 100 is connected with the residential power consumption area 210 and the factory power consumption area 220 through the transmission unit 300;

[0039] The wind power generation simulation machine 110 is connected with the control unit 400, is used for receiving external wind sources, converts wind source energy into electric energy to obtain a wind power generation power signal, and sends the wind power generation power signal to the control unit 400;

[0040] The photovoltaic power generation simulation machine 120 is connected with the control unit 400, is used for receiving external light sources, converts light source energy into electric energy to obtain a photovoltaic power generation power signal, and sends the photovoltaic power generation power signal to the control unit 400;

[0041] The thermal power generation simulation machine 130 is connected with the control unit 400, is used for receiving power generation instructions to generate power, and sends a thermal power generation power signal to the control unit 400;

[0042] The control unit 400 is connected with the adjusting unit 500 and the power consumption end device 200 respectively, is used for obtaining a power consumption load signal of the power consumption end device 200, and judges whether the electric power system load is balanced according to the wind power generation power signal, the photovoltaic power generation power signal and the thermal power generation power signal, and sends an adjusting signal to the adjusting unit 500 in the case of imbalance;

[0043] The adjusting unit 500 is used for adjusting system balance according to the adjusting signal. Here, the adjusting unit comprises a pumped storage simulation machine 510, a chemical energy storage unit 520 and a manual operation unit 530, and the adjusting signal comprises a first adjusting signal, a second adjusting signal and a third adjusting signal.

[0044] Specifically, Figure 2 And Figure 3 The circuit schematic diagrams of the wind power generation simulation machine and the photovoltaic power generation simulation machine provided by the utility model embodiments are respectively shown.

[0045] The photovoltaic power generation simulation machine 120 mainly comprises an analog light source generator for simulating sunlight, a solar cell group, and Figure 2The first ammeter, the first voltmeter, the first signal sampler, the first voltage stabilizer (DC voltage stabilizing circuit) and the LED display are connected to the positive electrode of the middle battery group, the light source generator adjusts the light intensity by obtaining the operation instruction of the user, the first ammeter and the first voltmeter monitor the power generation condition of the solar battery group, and the first signal sampler sends the sampled power to the first display device (the LED display) to display the power value of the photovoltaic power generation simulation machine in real time for the user to refer to.

[0046] The wind power generation simulation machine 110 mainly comprises a small electric fan for manufacturing a wind source, a fan blade, a shaft coupling connected with the fan blade, a permanent magnet DC generator connected with the shaft coupling, a second ammeter, a second voltmeter, a second signal sampler, a second voltage stabilizer (DC voltage stabilizing circuit) and a second display device, the small electric fan can adjust the wind intensity by obtaining the operation instruction of the user, the second ammeter and the second voltmeter monitor the power generation condition of the wind power generation simulation machine, and the second signal sampler sends the sampled power to the second display device (the LED display) to display the power value of the wind power generation simulation machine in real time.

[0047] It should be noted that, in the real power system, because the thermal power generation is often used as the energy supply mode to meet the basic load required in the system, the participation in the grid interactive regulation is less, therefore, the thermal power generation simulation machine 130 in the embodiment of the present application adopts the mode of ordinary battery fixed power generation inside, and the appearance model in the form of the thermal power plant is used as an external device to make an indication.

[0048] Figure 4The control unit circuit schematic diagram provided by the embodiment of the utility model.

[0049] The control unit 400 mainly comprises an adder 410, a subtracter 420, a determinator 430 and a light unit 440, and the light unit 440 comprises a green light and a red light.

[0050] The adder 410 is connected with the wind power generation simulator 110, the photovoltaic power generation simulator 120 and the thermal power generation simulator 130 respectively, is used for acquiring the wind power generation power signal, the photovoltaic power generation power signal and the thermal power generation power signal, and adding the power values to obtain the total power of the power generation end.

[0051] The subtracter 420 is connected with the adder 410 and the determinator 430, is used for acquiring the total power of the power generation end, subtracting the total power of the power generation end from the power load to obtain the balance difference value, and sending the balance difference value to the determinator 420.

[0052] The determinator 430 is connected with the light unit 440, is used for judging whether the balance difference value reaches the preset threshold value, if the preset threshold value is exceeded, a red light signal is sent to the red light, and a first adjustment signal, a second adjustment signal and a third adjustment signal are sent to the pumped storage simulator 510, the chemical energy storage unit 520 and the manual operation unit 530 respectively, wherein the first adjustment signal comprises a power generation adjustment signal and a power consumption adjustment signal, and if the preset threshold value is not exceeded, a green light signal is sent to the green light.

[0053] Specifically, the controller obtains the power generation power signals of the wind power, the photovoltaic power and the thermal power, obtains the total power of the power generation end, and is connected with the devices in the residential power consumption area 210 and the factory power consumption area 220 of the power consumption end device, and the sum can obtain the supply and demand power at the same time in the power system. In order to enable students to intuitively understand the balance state of the system, the light unit is set, when the power of the power generation end is greater than the power of the power consumption end (that is, supply is greater than demand) or the power of the power generation end is less than the power of the power consumption end (that is, supply is less than demand), as long as the absolute value of the above difference value exceeds the preset threshold value (5%), at this time, the red light is on, prompting the user that the current is in the system imbalance state, if the absolute value of the above difference value is less than the preset threshold value, it indicates that the system is completely balanced or the supply and demand are basically close, at this time, the green light is on, indicating that the power system is running normally. In this way, the teacher can show the power system operation condition according to the supply and demand scene, and the students can also understand the important significance of the reliable and stable operation of the power system through the dynamic state change.

[0054] When the red light is on, the controller sends the first adjusting signal, the second adjusting signal and the third adjusting signal to the pumped storage simulation machine 510, the chemical energy storage unit 520 and the manual operation unit 530 respectively, at this time, the pumped storage simulation machine and the chemical energy storage unit directly work. The manual operation unit 530 comprises a first knob 531, a second knob 532 and a sliding rheostat 533. The first knob 531 is operated by a teacher, a student or the like, and is connected with a small fan of the wind power generation simulation machine by rotating the first knob 531, so that the rotating speed of the small fan in the wind power generation simulation machine is controlled, thereby the power of the wind power generation is controlled; the second knob 532 is connected with a light source generator of the photovoltaic power generation simulation machine, and the light source generator light intensity of the photovoltaic power generation simulation machine is controlled by rotating the second knob 532, thereby the power of the photovoltaic power generation is controlled. The manual operation unit 530 further comprises an indicating light for indicating the operator to operate according to the third adjusting signal, when the supply and demand in the power system are not balanced, at this time, the indicating light is on, prompting the user to adjust the output of the wind power and the photovoltaic power in the power generation end by rotating the first knob 531 or the second knob 532, thereby the power system tends to be balanced. When the balance is re-acquired, the light of the light unit 440 will automatically change from red to green, and the indicating light of the manual operation light source is extinguished.

[0055] Figure 5 The chemical energy storage unit circuit schematic diagram provided by the embodiment of the utility model.

[0056] The chemical energy storage unit provided by the embodiment of the utility model mainly comprises a battery array (battery 1, battery 2, battery 3), a charge-discharge switch connected with the battery array, a third ammeter, a third voltmeter, a third signal sampler, a third voltage stabilizer (direct current voltage stabilizing circuit) and a third display device (LED display), wherein the charge-discharge switch comprises two parallel diodes and a switch connected with the diodes in series. The second adjusting signal is the same as the first adjusting signal and can be a power generation adjusting signal or a power consumption adjusting signal, when the chemical energy storage unit receives the power generation adjusting signal, the battery array discharges to the circuit, at this time Figure 5 the switch connected with the diode D1 in series is closed, and the switch connected with the diode D2 in series is opened; when the chemical energy storage unit receives the power consumption adjusting signal, the circuit charges to the battery array, at this time Figure 5 the switch connected with the diode D2 in series is closed, and the switch connected with the diode D1 in series is opened. The chemical energy storage unit provided by the embodiment of the utility model further comprises an LED display for showing the current charging or discharging state and the charge-discharge power value. The students can clearly understand the principle of the chemical energy storage device and understand how it participates in the supply and demand adjustment of the new power system.

[0057] The water pumping and storing simulation machine provided by the embodiment of the utility model includes a water storage pool, a small water pumping machine, a small impeller and a small generator, the water storage pool can adopt any two half-open containers, and is distributed in high and low positions, the small water pumping machine can directly adopt a fish tank type water pump, is arranged between the two containers, and is used for pumping water in the low position container to the high position container, a valve is arranged in the high position container, when the valve is opened, water in the high position container flows downward to the low position container, a small impeller is arranged in the passage, and the small impeller is connected with the small generator. The first adjustment signal includes a power generation adjustment signal and a power consumption adjustment signal, when the water pumping and storing simulation machine receives the power generation adjustment signal, the high position container valve is opened to release water, and power generation is carried out through the flushing impeller, when the power consumption adjustment signal is received, the water pumping machine works to pump water in the low position container to the high position container. In this way, how the water pumping and storing power station participates in the power system balance adjustment can be intuitively simulated, and the learning interest of students is improved through the visual water flow change.

[0058] It should be noted that the sliding rheostat 533 in the manual operation unit 530 is an important medium for visually displaying the demand response of the power consumption end. The residential power consumption area 210 provided by the utility model embodiment includes a residential air conditioner adjustable area 211 and a residential non-adjustable area 212, and the factory power consumption area 220 includes a production adjustable area 221 and a production non-adjustable area 222. The residential air conditioner adjustable area 211 and the production adjustable area 221 are each connected in series with one sliding rheostat 533, and the non-adjustable areas are set as fixed value resistors in the circuit of the embodiment of the application. If the power system balance cannot be obtained through the adjustment of wind power, photovoltaic power, water pumping and storing and chemical energy storage in the early stage, then at this time, the user can adjust the position of the connecting piece of the sliding rheostat 533 to reduce or increase the energy consumption of factory production or user air conditioners, further balance the supply and demand, and can understand whether the current system has been adjusted to a balanced state by observing the light color of the lamp tube unit 440.

[0059] The utility model provides a novel power system teaching sand table device for wind light storage, including power generation end device, power consumption end device, transmission unit, control unit and adjustment unit, power generation end device includes wind power generation simulation machine, photovoltaic power generation simulation machine and thermal power generation simulation machine, power consumption end device includes residential power consumption area and factory power consumption area, is connected with residential power consumption area and factory power consumption area through transmission unit. The teaching sand table of embodiment of the utility model can make student can more clearly understand the development trend of future novel power system in new energy, energy storage, demand response, change traditional sand table teaching mode, strengthen the interactive effect of user and demonstration equipment, make student intuitive understanding the operation logic of whole power system, grasp the mode that different load main body participates in the balance in the system, compared with textbook teaching or traditional sand table single display, can inspire student thinking more, exercise practical ability, help teacher to demonstrate teaching simultaneously, improve classroom efficiency and teaching quality.

[0060] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the system and device described above can refer to the corresponding process in the foregoing method embodiment, and will not be repeated here.

[0061] In addition, in the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood in a broad sense, for example, can be fixedly connected, can also be detachably connected, or integrally connected; can be mechanically connected, can also be electrically connected; can be directly connected, can also be indirectly connected through an intermediate medium, and can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0062] It should be noted that the description of the positional relationship in the present application does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0063] Finally, it should be noted that: the above-described embodiments are merely specific embodiments of the present application, used to illustrate the technical solutions of the present application, and are not limiting, the protection scope of the present application is not limited thereto, although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art within the technical range disclosed by the present application can modify or easily think of changes to the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features; and these modifications, changes or replacements do not make the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and all should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A novel teaching sand table device for wind-solar-storage-oriented power system, characterized in that, The utility model relates to a power generation terminal device, power consumption terminal device, transmission unit, control unit and adjusting unit, the power generation terminal device includes wind power generation simulator, photovoltaic power generation simulator and thermal power generation simulator, the power consumption terminal device includes residential power consumption area and factory power consumption area, the power generation terminal device is connected with the residential power consumption area and factory power consumption area through the transmission unit, The wind power generation simulator is connected with the control unit, for receiving external wind source, converting wind source energy into electric energy to obtain wind power generation power signal, and sending the wind power generation power signal to the control unit; The photovoltaic power generation simulator is connected with the control unit, for receiving external light source, converting light source energy into electric energy to obtain photovoltaic power generation power signal, and sending the photovoltaic power generation power signal to the control unit; The thermal power generation simulator is connected with the control unit, for receiving power generation instruction to generate power, and sending thermal power generation power signal to the control unit; The control unit is connected with the adjusting unit and the power consumption terminal device respectively, for obtaining power consumption load signal of the power consumption terminal device, and judging whether power system load is balanced according to the wind power generation power signal, photovoltaic power generation power signal and thermal power generation power signal, and sending adjusting signal to the adjusting unit in the case of imbalance; The adjusting unit is used for adjusting system balance according to the adjusting signal.

2. The wind-solar-storage oriented new type power system teaching sand table device according to claim 1, characterized in that, The adjusting signal includes first adjusting signal, second adjusting signal and third adjusting signal, and the adjusting unit includes pumped storage simulator, chemical energy storage unit and manual operation unit.

3. The wind-PV-storage oriented novel power system teaching sand table device according to claim 2, characterized in that, The control unit includes adder, subtracter, judge and light unit, and the light unit includes green light and red light; The adder is connected with the wind power generation simulator, photovoltaic power generation simulator and thermal power generation simulator respectively, for obtaining the wind power generation power signal, photovoltaic power generation power signal and thermal power generation power signal, and adding power values to obtain total power of power generation terminal; The subtracter is connected with the adder and judge, for obtaining total power of power generation terminal, subtracting the total power of power generation terminal from power consumption load to obtain balance difference, and sending the balance difference to the judge; The judge is connected with the light unit, for judging whether the absolute value of the balance difference reaches preset threshold, sending light-on signal to the red light and sending the first adjusting signal, second adjusting signal and third adjusting signal to the pumped storage simulator, chemical energy storage unit and manual operation unit respectively if the preset threshold is exceeded, wherein the first adjusting signal includes power generation adjusting signal and power consumption adjusting signal, and sending light-on signal to the green light if the preset threshold is not exceeded.

4. The wind-PV-storage oriented novel power system teaching sand table device according to claim 3, characterized in that, The photovoltaic power generation simulator comprises a light source generator, a solar cell group, a first ammeter, a first voltmeter, a first signal sampler, a first voltage stabilizer and a first display device, the light source generator adjusts the light intensity according to the user instruction, the first ammeter and the first voltmeter monitor the power generation of the solar cell group, the first signal sampler sends the sampled power to the first display device to display the power value of the photovoltaic power generation simulator in real time.

5. The wind-PV-storage oriented novel power system teaching sand table device according to claim 3, characterized in that, The wind power generation simulator comprises a small electric fan, a fan blade, a coupling connected with the fan blade, a permanent magnet DC generator connected with the coupling, a second ammeter, a second voltmeter, a second signal sampler, a second voltage stabilizer and a second display device, the small electric fan adjusts the wind intensity according to the user instruction, the second ammeter and the second voltmeter monitor the power generation of the wind power generation simulator, and the second signal sampler sends the sampled power to the second display device to display the power value of the wind power generation simulator in real time.

6. The wind-solar-storage oriented new-type power system teaching sand table device according to claim 3, characterized in that, The chemical energy storage unit is used for charging and discharging according to the second adjustment signal and comprises a battery array, a charge-discharge switch connected with the battery array, a third ammeter, a third voltmeter, a third signal sampler, a third voltage stabilizer and a third display device, wherein the charge-discharge switch comprises two parallel diodes and a switch connected in series with the diodes.

7. The wind-solar-storage oriented new-type power system teaching sand table device according to claim 3, characterized in that, The pumped storage simulator comprises a water storage tank, a small water pump, a small impeller and a power generation simulator group, and is used for starting the water pump to store energy according to the power consumption adjustment signal or releasing the water amount of the water storage tank to drive the small impeller to rotate to simulate power generation when the absolute value of the balance difference is greater than a preset threshold.

8. The wind-solar-storage oriented new-type power system teaching sand table device according to claim 3, characterized in that, The manual operation unit comprises a first knob for adjusting the wind intensity of the small electric fan, a second knob for adjusting the light intensity of the light source generator, a slide rheostat for adjusting the load of the power consumption end device and an indicator light for indicating the operation of the wind intensity, the light intensity and the slide rheostat according to the third adjustment signal, wherein the slide rheostat is connected with the residential power consumption area and the factory power consumption area.

9. The wind-PV-storage oriented novel power system teaching sand table device according to claim 8, characterized in that, The slide rheostat comprises a first slide rheostat and a second slide rheostat, the residential power consumption area comprises a residential air conditioner adjustable area and a residential non-adjustable area, the first slide rheostat is connected in series with the air conditioner adjustable area, the factory power consumption area comprises a production adjustable area and a production non-adjustable area, and the second slide rheostat is connected in series with the production adjustable area.

10. The novel wind solar storage based power system teaching sand table device of claim 1, wherein, The wind power generation simulator, the photovoltaic power generation simulator, the thermal power generation simulator, the pumped storage simulator and the chemical energy storage unit are connected in parallel.

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