Energy storage balance wind power generation control system

Abstract

The invention discloses an energy storage balance wind power generation control system, and belongs to the technical field of energy storage and power supply, the energy storage balance wind power generation control system is provided with an energy storage adjusting structure and a speed reduction structure, the energy storage adjusting structure comprises a transformer T, and an adjustable slide rheostat is arranged between each phase input end of the transformer T and each phase output end of an alternating current generator; by automatically adjusting the resistance value of the slide rheostat, the voltage of each phase input end of the transformer T is automatically stabilized. The speed reduction structure comprises a cabin, a rotating shaft is arranged in the cabin, one end of the rotating shaft is fixedly connected with blades, the other end of the rotating shaft is fixedly connected with an alternating current generator, a rotating disc is fixedly connected to the surface of the rotating shaft, a rotating disc groove is formed in the rotating disc, and a weight block is arranged in the rotating disc groove. The arc-shaped block is arranged on the surface of the weight block and abuts against the inner wall of the cabin, so that the rotating speed of the rotating shaft and the blades is reduced, the voltage generated by the alternating-current generator is more stable, and the voltage balance when wind power generation is merged into a municipal power grid is improved.

Description

Technical Field

[0001] The present invention is an energy storage and balancing wind power generation control system, belonging to the technical field of energy storage and power supply. Background Art

[0002] The working principle of a wind turbine is to use wind power to drive the blades to rotate, and the rotation of the blades drives the rotor inside the AC generator to rotate to generate electricity. The wind turbine generates AC power. Because the wind speed of the wind turbine is unstable, its general output is AC power that varies from 13 to 25V.

[0003] Since the AC power generated by the wind turbine needs to be boosted by the transformer and then connected to the high-voltage grid for transmission to distant places, the AC power generated by the wind turbine is unstable, so the value after the transformer boost will also increase exponentially, so the voltage value after the transformer boost will also vary greatly. The existing AC generator does not have the function of automatic voltage stabilization, and when the wind turbine generates excess electricity that exceeds the rated power of the transformer, the excess electricity cannot be automatically stored and can only be wasted.

[0004] Usually, the rotation speed of the blades is controlled by the wind speed. Since the wind speed is not controlled by humans, when the wind speed increases sharply, the rotation speed of the blades will also increase. Therefore, the rotation speed of the AC generator may also increase rapidly, and sometimes may exceed the maximum rotation speed of the AC generator. Then, the AC voltage generated by the AC generator will also increase. When wind power generation is incorporated into the municipal network, large voltage fluctuations will occur, and sometimes may even cause damage to the AC generator. For this reason, some technicians in this field have developed an energy storage and balancing wind power generation control system to overcome the problems in the above-mentioned background technology. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to address the above shortcomings and provide an energy storage and balanced wind power generation control system. The present invention is provided with an energy storage adjustment structure and a deceleration structure. The energy storage adjustment structure can automatically stabilize the voltage values ​​before and after the transformer and automatically store excess electrical energy in the battery. The deceleration structure can automatically reduce the excessively fast blade speed, thereby improving the voltage balance when wind power generation is incorporated into the municipal power grid and reducing the waste and consumption of electrical energy.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions: The energy storage balancing wind power generation control system includes an energy storage regulating structure and a deceleration structure; the energy storage regulating structure includes a transformer T, and the transformer T includes an input coil and an output coil; One end of the input coil of the transformer T is connected to the normally closed point NC2 of the solid-state relay K2, and the other end of the input coil is connected to the input common terminal N1. The common terminal COM2 of the solid-state relay K2 is connected to one end of the sliding rheostat R1, and the other end of the sliding rheostat R1 is connected to the R phase of the AC generator. One end of the output coil of the transformer T is connected to the municipal AC power L1 phase, and the other end of the output coil is connected to the municipal AC power common terminal N2.

[0007] Furthermore, the AC generator R is connected to the cathode of diode D3 and the anode of diode D4, the anode of diode D3 is connected to the anode of diode D1 and the ground wire, the cathode of diode D1 is connected to the anode of diode D2 and the input common terminal N1, the cathode of diode D4 is connected to the cathode of diode D2, one end of capacitor C1, one end of resistor R3, the cathode of Zener diode D5 and the cathode of Zener diode D6, the other end of capacitor C1 is connected to the ground wire, the other end of resistor R3 is connected to pin 3 of chip U1 and one end of resistor R4, and the other end of resistor R4 is connected to the ground wire.

[0008] Furthermore, the positive electrode of the voltage-stabilizing diode D5 is connected to one end of the resistor R9 and the base of the transistor Q2, the other end of the resistor R9 is connected to the ground wire, the collector of the transistor Q2 is connected to the power supply +24V, the emitter of the transistor Q2 is connected to one end of the resistor R2 and the positive electrode of the solid-state relay K2 coil, the negative electrode of the solid-state relay K2 coil and the other end of the resistor R2 are connected to the ground wire, the negative electrode of the voltage-stabilizing diode D6 is connected to the positive electrode of the current-limiting diode D7, the negative electrode of the current-limiting diode D7 is connected to the DC positive electrode of the battery pack, and the DC negative electrode of the battery pack is connected to the ground wire.

[0009] Furthermore, the chip U1 is an operational amplifier, the model of chip U1 is LF351, pin 1 of chip U1 is connected to one end of resistor R7, the other end of resistor R7 is connected to the base of transistor Q1, the collector of transistor Q1 is connected to the power supply +24V, the emitter of transistor Q1 is connected to one end of resistor R8 and the positive pole of the solid-state relay K1 coil, and the negative pole of the solid-state relay K1 coil and the other end of resistor R8 are connected to the ground wire.

[0010] Furthermore, pin 8 of the chip U1 is connected to the power supply +12V, pin 4 of the chip U1 is connected to the ground wire, pin 2 of the chip U1 is connected to one end of the resistor R5 and one end of the resistor R6, the other end of the resistor R5 is connected to the power supply +24V, and the other end of the resistor R6 is connected to the ground wire.

[0011] Furthermore, the common terminal COM1 of the solid-state relay K1 is connected to the power supply +24V, the normally closed point NC1 of the solid-state relay K1 is connected to the first hydraulic cylinder power supply DY1, and the normally open point NO1 of the solid-state relay K1 is connected to the second hydraulic cylinder power supply DY2.

[0012] Furthermore, the energy storage adjustment structure also includes a transverse plate, a slide rail is provided in the middle of the transverse plate, a slider is provided in the slide rail, and the lower end of the slider is connected to the middle contact of the sliding rheostat R1.

[0013] Furthermore, a first hydraulic cylinder and a second hydraulic cylinder are provided at both ends of the transverse plate, the first hydraulic cylinder is connected to one side of the slider, and the second hydraulic cylinder is connected to the other side of the slider.

[0014] Furthermore, the deceleration structure includes a cabin, which is cylindrical and hollow inside. A rotating shaft runs through the cabin, one end of the rotating shaft is fixed with a blade, and the other end of the rotating shaft is connected to the AC generator rotor.

[0015] Furthermore, a turntable is fixedly connected to the surface of the rotating shaft, and turntable grooves are evenly distributed on the surface of the turntable. A weight block and a reciprocating spring are arranged in the turntable groove. An arc block is also provided on the surface of the weight block, and the arc block has an arc-shaped structure. The weight block and the arc block are fixedly connected by a connecting rod.

[0016] The present invention adopts the above technical solution, which has the following technical effects compared with the prior art: 1. The energy storage regulation structure of the present invention is provided with an adjustable sliding rheostat between each phase input terminal of the transformer T and each phase output terminal of the AC generator. By automatically adjusting the resistance value of the sliding rheostat, the voltage of each phase input terminal of the transformer T is automatically stabilized, so that the voltage value before and after the transformer T remains stable, thereby improving the voltage balance when wind power generation is integrated into the municipal power grid.

[0017] 2. The present invention is provided with a deceleration structure, which includes a cabin, a rotating shaft is provided in the cabin, a blade is fixedly connected to one end of the rotating shaft, an AC generator is fixedly connected to the other end of the rotating shaft, a turntable is fixedly connected to the surface of the rotating shaft, a turntable groove is provided in the turntable, a weight block is provided in the turntable groove, and an arc block is provided on the surface of the weight block. When the blade speed is too high, the weight block is subjected to centripetal force, driving the arc block to resist the inner wall of the cabin, thereby slowing down the speed of the rotating shaft and the blade, making the voltage emitted by the AC generator more stable, and further improving the constancy of the power supply at the input end of the transformer T. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly describes the drawings required for the specific embodiments or the description of the prior art. Similar elements or parts are generally identified by similar reference numerals throughout the drawings. Elements or parts in the drawings are not necessarily drawn to scale or orientation.

[0019] Figure 1 The energy storage regulation structure circuit principle of the present invention Figure 1 ; Figure 2The energy storage regulation structure circuit principle of the present invention Figure 2 ; Figure 3 The energy storage regulation structure circuit principle of the present invention Figure 3 ; Figure 4 This is a front cross-sectional view of the deceleration structure of the present invention; Figure 5 This is a cross-sectional view of the connection between the turntable and the rotating shaft structure in the deceleration structure of the present invention.

[0020] Figure 2 、 Figure 4 and Figure 5 Middle: 1-cabin, 2-turntable, 3-weight block, 4-arc block, 5-rotating shaft, 6-reciprocating spring, 7-first hydraulic cylinder, 8-second hydraulic cylinder, 9-cross plate, 10-slider, 11-AC generator. DETAILED DESCRIPTION

[0021] Energy storage balancing wind power generation control system, including energy storage regulation structure and speed reduction structure; like Figure 1 、 Figure 2 and Figure 3 As shown, the energy storage regulation structure includes a transformer T. The transformer T has three phases, and each phase includes an input coil and an output coil. Only one phase is used as an example below.

[0022] One end of the input coil of the transformer T is connected to the normally closed point NC2 of the solid-state relay K2, and the other end of the input coil is connected to the input common terminal N1. The common terminal COM2 of the solid-state relay K2 is connected to one end of the sliding rheostat R1, and the other end of the sliding rheostat R1 is connected to the R phase of the AC generator. One end of the output coil of the transformer T is connected to the municipal AC power L1 phase, and the other end of the output coil is connected to the municipal AC power common terminal N2.

[0023] The AC generator R is connected to the cathode of diode D3 and the anode of diode D4, the anode of diode D3 is connected to the anode of diode D1 and the ground wire, the cathode of diode D1 is connected to the anode of diode D2 and the input common terminal N1, the cathode of diode D4 is connected to the cathode of diode D2, one end of capacitor C1, one end of resistor R3, the cathode of Zener diode D5 and the cathode of Zener diode D6, the other end of capacitor C1 is connected to the ground wire, the other end of resistor R3 is connected to pin 3 of chip U1 and one end of resistor R4, and the other end of resistor R4 is connected to the ground wire.

[0024] The positive electrode of the voltage-stabilizing diode D5 is connected to one end of the resistor R9 and the base of the transistor Q2, the other end of the resistor R9 is connected to the ground wire, the collector of the transistor Q2 is connected to the power supply +24V, the emitter of the transistor Q2 is connected to one end of the resistor R2 and the positive electrode of the solid-state relay K2 coil, the negative electrode of the solid-state relay K2 coil and the other end of the resistor R2 are connected to the ground wire, the negative electrode of the voltage-stabilizing diode D6 is connected to the positive electrode of the current-limiting diode D7, the negative electrode of the current-limiting diode D7 is connected to the DC positive electrode of the battery pack, and the DC negative electrode of the battery pack is connected to the ground wire.

[0025] The chip U1 is an operational amplifier, the model of chip U1 is LF351, pin 1 of chip U1 is connected to one end of resistor R7, the other end of resistor R7 is connected to the base of transistor Q1, the collector of transistor Q1 is connected to the power supply +24V, the emitter of transistor Q1 is connected to one end of resistor R8 and the positive pole of the solid-state relay K1 coil, and the negative pole of the solid-state relay K1 coil and the other end of resistor R8 are connected to the ground wire.

[0026] Pin 8 of the chip U1 is connected to the power supply +12V, pin 4 of the chip U1 is connected to the ground wire, pin 2 of the chip U1 is connected to one end of the resistor R5 and one end of the resistor R6, the other end of the resistor R5 is connected to the power supply +24V, and the other end of the resistor R6 is connected to the ground wire.

[0027] The common terminal COM1 of the solid-state relay K1 is connected to the power supply +24V, the normally closed point NC1 of the solid-state relay K1 is connected to the first hydraulic cylinder power supply DY1, and the normally open point NO1 of the solid-state relay K1 is connected to the second hydraulic cylinder power supply DY2.

[0028] The energy storage adjustment structure also includes a horizontal plate 9, a slide rail is provided in the middle of the horizontal plate 9, a slider 10 is provided in the slide rail, the lower end of the slider 10 is connected to the middle contact of the sliding rheostat R1, and a first hydraulic cylinder 7 and a second hydraulic cylinder 8 are provided at both ends of the horizontal plate 9. The first hydraulic cylinder 7 is connected to one side of the slider 10, and the second hydraulic cylinder 8 is connected to the other side of the slider 10.

[0029] The R phase of the AC generator is integrated into a DC voltage through a rectifier bridge composed of diodes D1 to D4, and flows into the ground through resistors R3 and R4. Pin 3 of chip U1 collects the voltage between resistors R3 and R4, and pin 2 of chip U1 collects the voltage between resistors R5 and R6. When the wind speed is small, the integrated DC voltage is also small, and the voltage at pin 3 of chip U1 is smaller than the voltage at pin 2 of chip U1. Chip U1 is not conducting, that is, pin 1 of chip U1 outputs a low level, transistor Q1 is not conducting, the common terminal COM1 of the solid-state relay K1 is connected to the normally closed point NC1 of the solid-state relay, the power supply of the first hydraulic cylinder is turned on, and the power supply of the second hydraulic cylinder is turned off, driving the middle contact of the sliding rheostat R1 to move away from the transformer T, and the resistance between the R phase of the AC generator and the transformer T becomes smaller. Therefore, the voltage distributed at the input end of the transformer T can be increased.

[0030] As the wind speed increases, the integrated DC voltage also increases, and the voltage at pin 3 of chip U1 gradually increases. When the voltage at pin 3 of chip U1 is greater than the voltage at pin 2 of chip U1, chip U1 is turned on, that is, pin 1 of chip U1 outputs a high level, transistor Q1 is turned on, the common terminal COM1 of solid-state relay K1 is connected to the normally closed point NO1 of the solid-state relay, the power supply of the second hydraulic cylinder is turned on, and the power supply of the first hydraulic cylinder is turned off, driving the middle contact of the sliding rheostat R1 to move toward the side close to the transformer T, and the resistance between the R phase of the AC generator and the transformer T becomes larger. Therefore, the voltage divided at the input end of the transformer T can be reduced. According to the above working principle, the voltage at the input end of the transformer T can be made a constant value according to the size of the wind speed.

[0031] When the wind speed suddenly increases, the integrated DC voltage also suddenly increases, the Zener diodes D5 and D6 are broken down, the base of the transistor Q2 is electrically conductive, the solid-state relay K2 is turned on, and the normally closed point NC2 of the solid-state relay K2 is disconnected from the common terminal COM2 of the solid-state relay K2, thereby disconnecting the input terminal of the transformer T from the R phase of the AC generator, preventing the input terminal voltage of the transformer T from being too large and damaging the transformer T. Then, the power of the R phase of the AC generator is stored in the battery DC through the Zener diode D6 and the current limiting diode D7, preventing energy waste.

[0032] like Figure 4 and Figure 5 As shown, the deceleration structure includes a nacelle 1, which is cylindrical and hollow inside. A rotating shaft 5 runs through the nacelle 1, one end of the rotating shaft 5 is fixed with a blade, and the other end of the rotating shaft 5 is connected to the rotor of the AC generator 11.

[0033] A turntable 2 is also fixedly connected to the surface of the rotating shaft 5, and turntable grooves are evenly distributed on the surface of the turntable 2. A weight block 3 and a reciprocating spring 6 are arranged in the turntable groove. An arc block 4 is also provided on the surface of the weight block 3. The arc block 4 has an arc-shaped structure, and the weight block 3 and the arc block 4 are fixedly connected by a connecting rod.

[0034] The blades rotate with the wind, and the rotating shaft 5 and the turntable 2 also rotate with it. The rotating shaft 5 drives the rotor of the AC generator 11 to rotate to generate electricity. While the turntable 2 rotates, the weight block 3 is subjected to centripetal force. The weight block 3 and the arc block 4 fixed in the same phase move away from the distal end of the turntable 2, that is, move toward the inner wall of the cabin 1, pulling the reciprocating spring 6 to deform and resist the inner wall of the cabin 1. The friction between the arc block 4 and the inner wall of the cabin 1 causes the rotating shaft 5 and the blades to slow down, and the reciprocating spring 6 acts as a buffer in the turntable groove.

[0035] The description of the present invention has been presented for purposes of illustration and description and is not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments are chosen and described in order to better illustrate the principles of the invention and its practical application and to enable those skilled in the art to understand the invention and design various embodiments with various modifications as suited to their specific applications.

Claims

1. Energy storage and balancing wind power generation control system, characterized by: It includes an energy storage regulating structure and a deceleration structure; the energy storage regulating structure includes a transformer T, and the transformer T includes an input coil and an output coil; One end of the input coil of the transformer T is connected to the normally closed point NC2 of the solid-state relay K2, and the other end of the input coil is connected to the input common terminal N1. The common terminal COM2 of the solid-state relay K2 is connected to one end of the sliding rheostat R1, and the other end of the sliding rheostat R1 is connected to the R phase of the AC generator. One end of the output coil of the transformer T is connected to the municipal AC power L1 phase, and the other end of the output coil is connected to the municipal AC power common terminal N2.

2. The energy storage and balancing wind power generation control system according to claim 1, characterized in that: The AC generator R is connected to the cathode of diode D3 and the anode of diode D4, the anode of diode D3 is connected to the anode of diode D1 and the ground wire, the cathode of diode D1 is connected to the anode of diode D2 and the input common terminal N1, the cathode of diode D4 is connected to the cathode of diode D2, one end of capacitor C1, one end of resistor R3, the cathode of Zener diode D5 and the cathode of Zener diode D6, the other end of capacitor C1 is connected to the ground wire, the other end of resistor R3 is connected to pin 3 of chip U1 and one end of resistor R4, and the other end of resistor R4 is connected to the ground wire.

3. The energy storage and balancing wind power generation control system according to claim 2, characterized in that: The positive electrode of the voltage-stabilizing diode D5 is connected to one end of the resistor R9 and the base of the transistor Q2, the other end of the resistor R9 is connected to the ground wire, the collector of the transistor Q2 is connected to the power supply +24V, the emitter of the transistor Q2 is connected to one end of the resistor R2 and the positive electrode of the solid-state relay K2 coil, the negative electrode of the solid-state relay K2 coil and the other end of the resistor R2 are connected to the ground wire, the negative electrode of the voltage-stabilizing diode D6 is connected to the positive electrode of the current-limiting diode D7, the negative electrode of the current-limiting diode D7 is connected to the DC positive electrode of the battery pack, and the DC negative electrode of the battery pack is connected to the ground wire.

4. The energy storage and balancing wind power generation control system according to claim 2, characterized in that: The chip U1 is an operational amplifier, the model of chip U1 is LF351, pin 1 of chip U1 is connected to one end of resistor R7, the other end of resistor R7 is connected to the base of transistor Q1, the collector of transistor Q1 is connected to the power supply +24V, the emitter of transistor Q1 is connected to one end of resistor R8 and the positive pole of the solid-state relay K1 coil, and the negative pole of the solid-state relay K1 coil and the other end of resistor R8 are connected to the ground wire.

5. The energy storage and balancing wind power generation control system according to claim 4, characterized in that: Pin 8 of the chip U1 is connected to the power supply +12V, pin 4 of the chip U1 is connected to the ground wire, pin 2 of the chip U1 is connected to one end of the resistor R5 and one end of the resistor R6, the other end of the resistor R5 is connected to the power supply +24V, and the other end of the resistor R6 is connected to the ground wire.

6. The energy storage and balancing wind power generation control system according to claim 4, characterized in that: The common terminal COM1 of the solid-state relay K1 is connected to the power supply +24V, the normally closed point NC1 of the solid-state relay K1 is connected to the first hydraulic cylinder power supply DY1, and the normally open point NO1 of the solid-state relay K1 is connected to the second hydraulic cylinder power supply DY2.

7. The energy storage and balancing wind power generation control system according to claim 1, characterized in that: The energy storage regulating structure further comprises a transverse plate (9), a slide rail being provided in the middle of the transverse plate (9), a slider (10) being provided in the slide rail, and a lower end of the slider (10) being connected to a middle contact of a sliding rheostat R1.

8. The energy storage and balancing wind power generation control system according to claim 7, characterized in that: A first hydraulic cylinder (7) and a second hydraulic cylinder (8) are further provided at both ends of the transverse plate (9). The first hydraulic cylinder (7) is connected to one side of the slider (10), and the second hydraulic cylinder (8) is connected to the other side of the slider (10).

9. The energy storage and balancing wind power generation control system according to claim 1, characterized in that: The deceleration structure comprises a cabin (1), which is cylindrical and hollow inside. A rotating shaft (5) passes through the cabin (1), one end of the rotating shaft (5) is fixedly connected to a blade, and the other end of the rotating shaft (5) is connected to a rotor of an AC generator (11).

10. The energy storage and balancing wind power generation control system according to claim 9, characterized in that: A turntable (2) is also fixedly connected to the surface of the rotating shaft (5), and turntable grooves are evenly distributed on the surface of the turntable (2). A weight block (3) and a reciprocating spring (6) are arranged in the turntable groove. An arc block (4) is also provided on the surface of the weight block (3), and the arc block (4) has an arc-shaped structure. The weight block (3) and the arc block (4) are fixedly connected via a connecting rod.

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