CN109510534B - Double-fed wind power generation system with energy storage function - Google Patents

Double-fed wind power generation system with energy storage function Download PDF

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Publication number
CN109510534B
CN109510534B CN201811520444.2A CN201811520444A CN109510534B CN 109510534 B CN109510534 B CN 109510534B CN 201811520444 A CN201811520444 A CN 201811520444A CN 109510534 B CN109510534 B CN 109510534B
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diode
module
power generation
wind power
energy storage
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CN109510534A (en
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张军利
张格丽
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Xuchang University
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Xuchang University
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
    • H02P9/007—Control circuits for doubly fed generators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/20—Wind motors characterised by the driven apparatus
    • F03D9/25—Wind motors characterised by the driven apparatus the apparatus being an electrical generator
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
    • H02P9/04—Control effected upon non-electric prime mover and dependent upon electric output value of the generator
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P2101/00—Special adaptation of control arrangements for generators
    • H02P2101/15—Special adaptation of control arrangements for generators for wind-driven turbines
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction

Abstract

The invention discloses a double-fed wind power generation system with energy storage, which comprises a wind power generation set, a rectification module, an energy storage module, an inversion module, a CPU (central processing unit) and a feedback regulation module, wherein the voltage output end of the wind power generation set is connected with the voltage input end of the rectification module, the voltage output end of the rectification module is connected with the energy storage module, the energy storage module is also respectively connected with a direct current output control module and the inversion module, the direct current output control module and the inversion module are both connected with a load, and the rectification module is also connected with the CPU.

Description

Double-fed wind power generation system with energy storage function
Technical Field
The invention relates to the technical field of electric power, in particular to a double-fed wind power generation system with energy storage.
Background
Wind power generation, as a clean, abundant and renewable energy source, is increasingly gaining wide attention all over the world, and particularly, has been rapidly developed in recent years. When wind flows through the blades of the wind turbine to drive the wind turbine to rotate, the wind energy is converted into mechanical energy, the wind turbine drives the rotor of the generator to rotate, the generator supplies power to the power grid, and the mechanical energy is converted into electric energy. Compared with the traditional constant-speed constant-frequency wind power generation system, the variable-speed constant-frequency wind power generation system adopting the doubly-fed wound asynchronous generator has the remarkable advantages that: the wind energy utilization coefficient is high, energy fluctuation generated by sudden change of wind speed can be absorbed, overlarge torque and stress borne by the main shaft and the transmission mechanism are avoided, active power and reactive power can be freely adjusted, the power factor of the system is improved, and convenient adjustment of frequency and voltage can be realized. At present, the double-fed wind power generation technology is one of the most widely applied wind power generation technologies.
The existing wind power generation control system is relatively backward, cannot meet the requirement of household miniaturization, and cannot monitor and manage the power generation process.
Disclosure of Invention
The invention aims to provide a double-fed wind power generation system with energy storage to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a double-fed wind power generation system of area energy storage, includes wind generating set, rectifier module, energy storage module, contravariant module, CPU and feedback regulation module, wind generating set's voltage output end connects rectifier module's voltage input end, and rectifier module's voltage output end connects energy storage module, and energy storage module still connects direct current output control module and contravariant module respectively, and direct current output control module and contravariant module all connect the load, and rectifier module still connects CPU, and CPU is still connected to direct current output control module's output, and CPU still connects CPU, and CPU still connects wind generating set through feedback regulation module.
As a further technical scheme of the invention: and the CPU is also connected with a keyboard for actively inputting control instructions.
As a further technical scheme of the invention: and the CPU is also connected with a display for displaying various data information.
As a further technical scheme of the invention: and the CPU is also connected with an alarm for sending out a prompt signal when an abnormal condition occurs.
As a further technical scheme of the invention: the direct current output control module comprises a resistor R1, a potentiometer RP1, a triode V1 and a relay J, one end of the resistor R1 is connected with the relay J, a contact J-1 of the relay J and the anode of a storage battery E, the other end of the resistor R1 is connected with a potentiometer RP1, the other end of the potentiometer RP1 is connected with a resistor R2, the sliding end of the potentiometer RP1 is connected with the cathode of a diode D1 and the base of the triode V1, the emitter of the triode V1 is connected with the anode of a diode D2, the collector of the triode V1 is connected with the other end of the relay J, the anode of the diode D1 is connected with a resistor R3 and a load RL, the cathode of the diode D2 is connected with the other end of the resistor R2, the other end of the resistor R3, a capacitor C1 and the cathode of the storage battery E, and the other end of the contact J-1 of the relay J is connected with the other end of the load RL and the other end of the capacitor C1.
As a further technical scheme of the invention: the rectifying module comprises diodes D3-D8, the anode of a diode D3 is connected with the cathode of a diode D4 and the pin 2 of an input end, the anode of a diode D6 is connected with the cathode of a diode D7 and the pin 3 of the input end, the anode of a diode D7 is connected with the cathode of a diode D8 and the pin 1 of the input end, the cathode of a diode D3 is connected with the cathode of a diode D5, the cathode of a diode D7, a capacitor C2 and the pin 4 of the output end, and the anode of a diode D4 is connected with the anode of a diode D8, the anode of a diode D6, the other end of the capacitor C2 and the pin 5 of the output end.
As a further technical scheme of the invention: the CPU is an AT89C52 singlechip.
Compared with the prior art, the invention has the beneficial effects that: the double-fed wind power generation system with energy storage can monitor the whole process of a wind power generation circuit, know the running state of the system by acquiring the output voltage condition, perform feedback regulation on the wind power generator and effectively ensure the stability of the output voltage of the system.
Drawings
Fig. 1 is an overall schematic view of the present invention.
Fig. 2 is a circuit diagram of the dc output control module.
Fig. 3 is a circuit diagram of a rectifier module.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1: referring to fig. 1-3, a double-fed wind power generation system with energy storage includes a wind power generator set for wind-electricity conversion, a rectification module for three-phase ac-dc voltage conversion, an energy storage module for storing electric energy for use at any time, an inversion module for meeting the power supply requirement of an ac load, a CPU for comprehensive signal processing, and a feedback regulation module for automatic regulation, wherein a voltage output terminal of the wind power generator set is connected to a voltage input terminal of the rectification module, a voltage output terminal of the rectification module is connected to the energy storage module, the energy storage module is further connected to a dc output control module and the inversion module respectively, both the dc output control module and the inversion module are connected to a load, and the voltage output by the wind power generator set can meet the use requirements of the dc load and the ac load through the above processes, and the rectification module is also connected to the CPU, the output end of the direct current output control module is also connected with the CPU, the output end of the inversion module is also connected with the CPU, and the CPU is also connected with the wind generating set through the feedback regulation module. Therefore, the CPU can collect the output voltage of the rectifier module so as to judge the running state of the wind generating set, the output voltage of the wind generating set is automatically stabilized through the adjusting function of the feedback adjusting module, the feedback adjusting module adopts a PWM control chip, and the CPU is also connected with a keyboard for actively inputting control instructions, a display for displaying various data information and an alarm for sending out prompt signals when abnormal conditions occur.
Embodiment 2, based on embodiment 1, the dc output control module of the present design includes a resistor R1, a potentiometer RP1, a transistor V1, and a relay J, one end of the resistor R1 is connected to the relay J, the other end of the resistor R1 is connected with a potentiometer RP1, the other end of the potentiometer RP1 is connected with a resistor R2, the sliding end of the potentiometer RP1 is connected with the cathode of a diode D1 and the base of a triode V1, the emitter of the triode V1 is connected with the anode of the diode D2, the collector of the triode V1 is connected with the other end of the relay J, the anode of the diode D1 is connected with a resistor R3 and a load RL, the cathode of the diode D2 is connected with the other end of a resistor R2, the other end of the resistor R3, a capacitor C1 and the cathode of the battery E, and the other end of the contact J-1 of the relay J is connected with the other end of the load RL and the other end of the capacitor C1. As shown in fig. 2, the resistor R1, the potentiometer RP1 and the resistor R2 form a group of voltage detection units, the working state of the relay J is changed by the state of the transistor V1, when the output voltage of the storage battery E is high enough, the voltage of the sliding end of the potentiometer RP1 meets the conduction condition of the triode V1, so that the triode V1 is conducted, the relay J is electrified, the load RL is electrified, when the output voltage of the storage battery E is insufficient, the triode V1 is cut off due to the reduction of the base voltage, the relay J is disconnected, the load RL loses the electricity, the resistor R3, the capacitor C1 and the diode D1 form an anti-shake circuit, when the voltage of the storage battery E is near a critical point, because the voltage at the two ends of the capacitor C1 can not change suddenly, the conduction of the triode V1 can be maintained in a short time through the load RL and the diode D1, and the jitter generated when the voltage of the storage battery E is near a critical point is avoided.
The rectifying module comprises diodes D3-D8, the anode of a diode D3 is connected with the cathode of a diode D4 and the pin 2 at the input end, the anode of a diode D6 is connected with the cathode of a diode D7 and the pin 3 at the input end, the anode of a diode D7 is connected with the cathode of a diode D8 and the pin 1 at the input end, the cathode of a diode D3 is connected with the cathode of a diode D5, the cathode of a diode D7, a capacitor C2 and the pin 4 at the output end, and the anode of a diode D4 is connected with the anode of a diode D8, the anode of a diode D6, the other end of the capacitor C2 and the pin 5 at the output end, so that the conversion from three-phase alternating current to direct current voltage can be completed as shown in FIG. 3.
The present invention may be embodied in other specific forms without departing from its spirit or essential characteristics. For example, the resistive and capacitive elements described in the specific embodiments may be one element or a plurality of elements connected in series or in parallel, without departing from the basic spirit of the present invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims (6)

1. A double-fed wind power generation system with energy storage comprises a wind power generation unit, a rectification module, an energy storage module, an inversion module, a CPU and a feedback regulation module, and is characterized in that a voltage output end of the wind power generation unit is connected with a voltage input end of the rectification module, a voltage output end of the rectification module is connected with the energy storage module, the energy storage module is also respectively connected with a direct current output control module and the inversion module, the direct current output control module and the inversion module are both connected with a load, the rectification module is also connected with the CPU, an output end of the direct current output control module is also connected with the CPU, an output end of the inversion module is also connected with the CPU, the CPU is also connected with the wind power generation unit through the feedback regulation module, the direct current output control module comprises a resistor R1, a potentiometer RP1, a triode V1 and a relay J, one end of the resistor R1 is connected with the relay J, a contact J-1 of the relay J and an anode of a storage battery E, the other end of the resistor R1 is connected with a potentiometer RP1, the other end of the potentiometer RP1 is connected with a resistor R2, the sliding end of the potentiometer RP1 is connected with the negative electrode of a diode D1 and the base electrode of a triode V1, the emitter electrode of a triode V1 is connected with the positive electrode of the diode D2, the collector electrode of a triode V1 is connected with the other end of a relay J, the positive electrode of the diode D1 is connected with a resistor R3 and a load RL, the negative electrode of the diode D2 is connected with the other end of a resistor R2, the other end of a resistor R3, a capacitor C1 and the negative electrode of a storage battery E, and the other end of a contact J-1 of the relay J is connected with the other end of the load RL and the other end of the capacitor C1.
2. The doubly-fed wind power generation system with energy storage of claim 1, wherein a keyboard for actively inputting control commands is further connected to said CPU.
3. The doubly-fed wind power generation system with energy storage of claim 1, wherein a display for displaying various data information is further connected to said CPU.
4. A doubly-fed wind power generation system with stored energy as claimed in any of claims 1 to 3 wherein said CPU is further connected to an alarm for sending a warning signal when an abnormal condition occurs.
5. A doubly-fed wind power generation system with energy storage according to claim 1, wherein said rectification module comprises diodes D3-D8, the anode of diode D3 is connected with the cathode of diode D4 and the input end 2 pin, the anode of diode D6 is connected with the cathode of diode D7 and the input end 3 pin, the anode of diode D7 is connected with the cathode of diode D8 and the input end 1 pin, the cathode of diode D3 is connected with the cathode of diode D5, the cathode of diode D7, the capacitor C2 and the output end 4 pin, and the anode of diode D4 is connected with the anode of diode D8, the anode of diode D6, the other end of capacitor C2 and the output end 5 pin.
6. The doubly-fed wind power generation system with energy storage of claim 1, wherein said CPU is an AT89C52 single chip microcomputer.
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CN112825465B (en) * 2019-11-21 2023-03-07 株洲中车时代电气股份有限公司 Converter for railway vehicle shaft end power generation system and shaft end power generation system
CN113090444A (en) * 2021-04-08 2021-07-09 嘉兴学院 Wind power generation energy storage power generation system
CN114280999A (en) * 2021-12-29 2022-04-05 江苏友和动力机械有限公司 Intelligent control panel of mobile power generation power supply

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KR101739053B1 (en) * 2010-08-09 2017-05-24 에스프린팅솔루션 주식회사 Switching Mode Power Supply and method for controlling thereof
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