CN109412200B - Access control system for renewable energy power generation - Google Patents
Access control system for renewable energy power generation Download PDFInfo
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- H02J3/383—
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- H02J3/386—
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
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- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
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- 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
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- 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
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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- 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
- Y02E10/76—Power conversion electric or electronic aspects
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- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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Abstract
The invention discloses an access control system for power generation by renewable energy sources, which comprises a controller, a data cache module, a data analysis module, a display module, a data acquisition module, a PLC (programmable logic controller) control unit, a power generation system and a data simulation system, wherein the data cache module is used for storing data; the controller is in communication connection with the data caching module, the data caching module is in communication connection with the data analysis module, the data analysis module is in communication connection with the controller, the controller is in communication connection with the display module, the controller is in communication connection with the data simulation system, the controller is in communication connection with the PLC control unit, the PLC control unit is in communication connection with the power generation system, the power generation system is in communication connection with the data acquisition module, and the data acquisition module is in communication connection with the controller. The invention fully utilizes wind power generation and photovoltaic power generation, avoids the condition that daily electricity is totally generated by thermal power, saves energy consumption, reduces power generation cost, protects the environment from pollution, and is more environment-friendly.
Description
Technical Field
The invention belongs to the field of power generation systems, and relates to an access control system for renewable energy power generation, in particular to an access control system for renewable energy power generation.
Background
Photovoltaic power generation is a technology of directly converting light energy into electric energy by using the photovoltaic effect of a semiconductor interface. The solar energy power generation system mainly comprises a solar panel (assembly), a controller and an inverter, and the main components are electronic components. The solar cells are connected in series and then are packaged and protected to form a large-area solar cell module, and then the photovoltaic power generation device is formed by matching with components such as a power controller and the like. Wind power generation converts kinetic energy of wind into mechanical kinetic energy, and then converts the mechanical energy into electrical kinetic energy. The principle of wind power generation is that wind power drives windmill blades to rotate, and then the rotating speed is increased through a speed increaser, so that a generator is promoted to generate electricity. According to current windmill technology, the generation of electricity can be started at a breeze speed (in the order of breeze) of about three meters per second. Wind power generation is forming a hot tide in the world because it does not require the use of fuel and does not produce radiation or air pollution. Most of the existing power grid power supply uses thermal power generation, consumes a large amount of fossil energy and causes environmental pollution.
The existing power grid control system cannot freely switch thermal power generation, photovoltaic power generation and wind power generation, cannot control the start and stop of the thermal power generation according to the generated energy of the thermal power generation, the photovoltaic power generation and the wind power generation device, cannot control the normal power consumption of a power grid in real time, and causes energy consumption, environmental pollution and high power generation cost due to the uninterrupted use of the thermal power generation device.
Disclosure of Invention
The invention aims to provide an access control system for power generation by renewable energy sources.
The technical problem to be solved by the invention is as follows:
(1) at what point in time the wind power generation unit and the photovoltaic power generation unit are connected into the grid system;
(2) how to judge the accuracy of the access time point, at which time point the thermal power generation unit stops working, and the energy consumption is saved;
(3) how to determine whether the wind power generation unit and the photovoltaic power generation unit can meet the demand of the power consumption of the power grid in real time.
The purpose of the invention can be realized by the following technical scheme:
an access control system for power generation of renewable energy sources comprises a controller, a data cache module, a data analysis module, a display module, a data acquisition module, a PLC control unit, a power generation system and a data simulation system;
the controller is in communication connection with a data cache module, the data cache module is in communication connection with a data analysis module, the data analysis module is in communication connection with a controller, the controller is in communication connection with a display module, the controller is in communication connection with a data simulation system, the controller is in communication connection with a PLC control unit, the PLC control unit is in communication connection with a power generation system, the power generation system is in communication connection with a data acquisition module, and the data acquisition module is in communication connection with the controller;
the controller is used for receiving data sent by the data acquisition module, the data simulation system and the data analysis module, comparing and judging the data with preset values, receiving the data of electric quantity sent by the three power generation units, starting the data simulation system to operate, and transmitting the data to the data cache module, the data simulation system, the PLC control unit and the display module;
the data cache module is used for receiving the data signals sent by the controller, storing the data and finally sending the data signals to the data analysis module;
the data analysis module is used for receiving the data sent by the data cache module, analyzing and converting the data and transmitting the data result after analysis and conversion to the controller;
the data acquisition module is used for acquiring the electric quantity generated by three power generation units, namely a wind power generation unit, a thermal power generation unit and a photovoltaic power generation unit in the power generation system in the work per unit time and transmitting the acquired generated energy data to the controller;
the PLC control unit is used for receiving the instruction sent by the controller and changing the working states of the wind power generation unit, the thermal power generation unit, the photovoltaic power generation unit and the power grid according to the instruction;
the power generation system is used for daily power generation, generates power by utilizing wind power, thermal power and photovoltaic power and transmits the generated electric quantity to a power grid, and comprises a wind power generation unit, a thermal power generation unit, a photovoltaic power generation unit and a standby power supply unit;
the wind power generation unit and the photovoltaic power generation unit generate power by utilizing reproducible wind power and light energy, the thermal power generation unit generates power by utilizing thermal power and transmits the generated power to a power grid, the standby power supply unit is used for providing standby power for the power grid, and the standby power supply unit transmits power to the power grid in the conversion process of the wind power generation unit, the photovoltaic power generation unit and the thermal power generation unit;
the data simulation system is used for simulating the electric quantity generated by the photovoltaic power generation unit and the wind power generation unit in unit time under different environments, collecting and transmitting the generated electric quantity to the controller to be compared with a preset value, and comprises an auxiliary PLC control unit, a simulated wind power generation module, a simulated photovoltaic power generation module, an electric quantity statistics unit, a data processing module, a weather collection module and a power generation time estimation module;
the auxiliary PLC control unit is used for receiving a data signal sent by the controller and starting the simulation wind power generation module and the simulation photovoltaic power generation module according to the signal;
the simulation wind power generation module and the simulation photovoltaic power generation module are installed together with the wind power generation unit and the photovoltaic power generation unit, so that the power generation states of the wind power generation unit and the photovoltaic power generation unit under different environments can be simulated;
the electric quantity counting unit is used for detecting the electric quantity generated by the simulation wind power generation module and the simulation photovoltaic power generation module in unit time and transmitting the detected data to the data processing module, and the data processing module integrates the data and transmits the data to the controller;
the weather acquisition module is used for acquiring actual wind power and illumination intensity in the running process of the wind power generation unit and the photovoltaic power generation unit and transmitting the acquired data to the power generation time estimation module, and the power generation time estimation module estimates the duration time of the wind power generation unit and the photovoltaic power generation unit reaching the power supply requirement according to the received data and transmits the estimated time data to the data processing module;
the data acquisition module acquires data and the controller controls and starts the data simulation system, and the method comprises the following specific steps:
the method comprises the following steps: the data acquisition module transmits the acquired electric quantity W1 generated by the wind power generation unit in unit time, the acquired electric quantity W2 generated by the photovoltaic power generation unit in unit time and the total data W3 generated by the photovoltaic power generation unit in unit time to the controller, wherein the data W1, the data W2 and the data W3 are transmitted to the controller;
step two: the controller compares the collected data W1, W2 and W3 with a preset electric quantity data value P, wherein P is a numerical value of a power grid which can meet the normal power supply requirement, and when any one of W1, W2 and W3 is more than or equal to P, the controller starts a data simulation system;
step three: the controller stores the data through the data caching module, the data caching module transmits the data to the data analysis module, and the data analysis module analyzes the data, converts the data into a control signal and transmits the control signal to the controller;
the data simulation system comprises the following specific working steps:
the method comprises the following steps: the controller transmits the received control signal to the auxiliary PLC control unit, and the auxiliary PLC control unit starts the simulation wind power generation module or the simulation photovoltaic power generation module according to the control signal or simultaneously starts the simulation wind power generation module and the simulation photovoltaic power generation module to work;
step two: the simulation wind power generation module and the simulation photovoltaic power generation module perform power generation work in the same environment of the wind power generation unit and the photovoltaic power generation unit, the electric quantity values generated in unit time in the work of the simulation wind power generation module and the simulation photovoltaic power generation module are respectively set as X1 and X2, and the sum of the electric quantities generated in unit time of the simulation wind power generation module and the simulation photovoltaic power generation module is X3;
step three: the electric quantity statistical unit counts the electric quantity X1, X2 and X3 generated in unit time and transmits X1, X2 and X3 to the data processing module;
step four: the data processing module carries out comparison processing on X1, X2 and X3 and transmits the processing result to the controller, and the processing procedure is as follows:
s1: setting the power generation efficiency of the simulation wind power generation module and the simulation photovoltaic power generation module as 1/n of the power generation efficiency of the wind power generation unit and the photovoltaic power generation unit;
s2: comparing P/n to X1, X2, and X3;
s3: when the P/n is less than or equal to any one of X1, X2 and X3, the data acquired by the data acquisition module is accurate, the power generation amount of any one or the sum of the wind power generation unit and the photovoltaic power generation unit can meet the power demand of a power grid, and the data are transmitted to the controller;
the specific steps of the power generation time estimation module for estimating the time are as follows:
a weather acquisition module acquires actual wind power Y, illumination intensity Z and weather condition duration time T in the running process of a wind power generation unit and a photovoltaic power generation unit;
step two: the weather acquisition module transmits the acquired wind power Y, the illumination intensity Z and the duration time T of the weather condition to the power generation time estimation module;
s1: setting the power generation capacity of the simulated photovoltaic power generation module as A, setting the power generation capacity of the simulated wind power generation module as B, setting X1 as B, Z, t, X2 as A, Y, t, X3 as B, Z, t and Y, wherein t is set unit time;
s2: the power generation time estimation module compares P/n with X1, X2 and X3, when P/n is less than or equal to any one of X1, X2 and X3, the time length of the power supply of the wind power generation unit and the power supply of the photovoltaic power generation unit to the power grid is T, when X1, X2 and X3 are all less than P/n, the wind power generation unit and the photovoltaic power generation unit cannot supply power to the power grid, and the time length of the power supply of the power grid is 0;
s3: the power generation time estimation module transmits the estimated time T to the data processing module and further to the controller.
Preferably, the controller sends an instruction to the PLC control unit according to a simulation result obtained by the data simulation system, and when the result meets the power utilization requirement of the power grid, the PLC control unit controls the thermal power generation unit to stop power generation and connects the wind power generation unit and the photovoltaic power generation unit with the power grid; and when the result does not meet the requirement of the power grid, the PLC control unit controls the thermal power generation unit to generate power, the wind power generation unit and the photovoltaic power generation unit are separated from the power grid, and the PLC control unit separates the wind power generation unit and the photovoltaic power generation unit from the power grid according to the estimated time T and the estimated time length of power supply.
Preferably, the display module is configured to receive data sent by the controller during operation, and display the data by using the display screen.
Preferably, the data acquisition module can be further used for acquiring the generated energy of the thermal power generation unit in different time periods during operation, and transmitting the generated energy of the different time periods to the controller, and the controller sets different P values according to the different time periods.
Preferably, when the wind power generation unit and the photovoltaic power generation unit are connected to a power grid to work, the data simulation system works synchronously, the generated energy of the wind power generation unit and the photovoltaic power generation unit is simulated in real time and is compared with a preset value, a data signal is transmitted to the controller, when the power consumption requirement of the power grid is not met, the controller controls the wind power generation unit and the photovoltaic power generation unit to be separated from the power grid, the thermal power generation unit starts to work, when the wind power generation unit and the photovoltaic power generation unit are connected to the power grid, a standby power supply is connected to the power grid, and when the wind power generation unit and the photovoltaic power generation unit are switched to the thermal power unit, the standby power supply supplies power to the power grid.
The invention has the beneficial effects that:
(1) the method comprises the steps that firstly, the generated energy of the wind power generation unit and the photovoltaic power generation unit in unit time can be collected in real time through the data collection module, the generated energy is transmitted to the controller, the controller compares the collected data with the set numerical value meeting the use requirement of the power grid, the wind power generation unit and the photovoltaic power generation unit are connected with the power grid, and the thermal power generation unit is closed through the PLC control unit. The wind power generation and the photovoltaic power generation are fully utilized, the condition that daily electricity is used by means of thermal power generation is avoided, energy consumption is saved, the power generation cost is reduced, the environment is protected from being polluted, and the solar photovoltaic power generation system is more environment-friendly.
(2) Meanwhile, the data acquired by the data acquisition module is detected by the data simulation system, the simulated wind power generation module and the simulated photovoltaic power generation module are placed in the same working environment as the wind power generation unit and the photovoltaic power generation unit, whether the generated energy of the wind power generation unit and the photovoltaic power generation unit in unit time can meet the power consumption requirement of a power grid or not is recalculated, the wind power generation unit and the photovoltaic power generation unit can be normally used after being connected into the power grid, and the power consumption condition of the power grid cannot be abnormal;
(3) the invention can realize the free switching between thermal power generation and renewable energy power generation, has higher automation degree and can save the energy consumption to the maximum extent. When the wind power generation unit, the photovoltaic power generation unit and the power grid are connected to work, whether the power output can meet the requirement of the power grid or not can be judged through the data simulation system, and when the power output is not met, the controller can control the thermal power generation unit to start through the PLC control unit, so that the normal use of the power grid is ensured. And when the power generation units are switched, the standby power supply unit can supply power to the power grid, so that the power grid can be continuously used, and abnormal power utilization can not occur.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a block diagram of the system of the present invention.
Detailed Description
As shown in fig. 1, an access control system for renewable energy power generation includes a controller, a data cache module, a data analysis module, a display module, a data acquisition module, a PLC control unit, a power generation system, and a data simulation system;
the controller is in communication connection with a data cache module, the data cache module is in communication connection with a data analysis module, the data analysis module is in communication connection with a controller, the controller is in communication connection with a display module, the controller is in communication connection with a data simulation system, the controller is in communication connection with a PLC control unit, the PLC control unit is in communication connection with a power generation system, the power generation system is in communication connection with a data acquisition module, and the data acquisition module is in communication connection with the controller;
the controller is used for receiving data sent by the data acquisition module, the data simulation system and the data analysis module, comparing and judging the data with preset values, receiving the data of electric quantity sent by the three power generation units, starting the data simulation system to operate, and transmitting the data to the data cache module, the data simulation system, the PLC control unit and the display module;
the data cache module is used for receiving the data signals sent by the controller, storing the data and finally sending the data signals to the data analysis module;
the data analysis module is used for receiving the data sent by the data cache module, analyzing and converting the data and transmitting the data result after analysis and conversion to the controller;
the data acquisition module is used for acquiring the electric quantity generated by three power generation units, namely a wind power generation unit, a thermal power generation unit and a photovoltaic power generation unit in the power generation system in the work per unit time and transmitting the acquired generated energy data to the controller;
the PLC control unit is used for receiving the instruction sent by the controller and changing the working states of the wind power generation unit, the thermal power generation unit, the photovoltaic power generation unit and the power grid according to the instruction;
the power generation system is used for daily power generation, generates power by utilizing wind power, thermal power and photovoltaic power and transmits the generated electric quantity to a power grid, and comprises a wind power generation unit, a thermal power generation unit, a photovoltaic power generation unit and a standby power supply unit;
the wind power generation unit and the photovoltaic power generation unit generate power by utilizing reproducible wind power and light energy, the thermal power generation unit generates power by utilizing thermal power and transmits the generated power to a power grid, the standby power supply unit is used for providing standby power for the power grid, and the standby power supply unit transmits power to the power grid in the conversion process of the wind power generation unit, the photovoltaic power generation unit and the thermal power generation unit;
the data simulation system is used for simulating the electric quantity generated by the photovoltaic power generation unit and the wind power generation unit in unit time under different environments, collecting and transmitting the generated electric quantity to the controller to be compared with a preset value, and comprises an auxiliary PLC control unit, a simulated wind power generation module, a simulated photovoltaic power generation module, an electric quantity statistics unit, a data processing module, a weather collection module and a power generation time estimation module;
the auxiliary PLC control unit is used for receiving a data signal sent by the controller and starting the simulation wind power generation module and the simulation photovoltaic power generation module according to the signal;
the simulation wind power generation module and the simulation photovoltaic power generation module are installed together with the wind power generation unit and the photovoltaic power generation unit, so that the power generation states of the wind power generation unit and the photovoltaic power generation unit under different environments can be simulated;
the electric quantity counting unit is used for detecting the electric quantity generated by the simulation wind power generation module and the simulation photovoltaic power generation module in unit time and transmitting the detected data to the data processing module, and the data processing module integrates the data and transmits the data to the controller;
the weather acquisition module is used for acquiring actual wind power and illumination intensity in the running process of the wind power generation unit and the photovoltaic power generation unit and transmitting the acquired data to the power generation time estimation module, and the power generation time estimation module estimates the duration time of the wind power generation unit and the photovoltaic power generation unit reaching the power supply requirement according to the received data and transmits the estimated time data to the data processing module;
the data acquisition module acquires data and the controller controls and starts the data simulation system, and the method comprises the following specific steps:
the method comprises the following steps: the data acquisition module transmits the acquired electric quantity W1 generated by the wind power generation unit in unit time, the acquired electric quantity W2 generated by the photovoltaic power generation unit in unit time and the total data W3 generated by the photovoltaic power generation unit in unit time to the controller, wherein the data W1, the data W2 and the data W3 are transmitted to the controller;
step two: the controller compares the collected data W1, W2 and W3 with a preset electric quantity data value P, wherein P is a numerical value of a power grid which can meet the normal power supply requirement, and when any one of W1, W2 and W3 is more than or equal to P, the controller starts a data simulation system;
step three: the controller stores the data through the data caching module, the data caching module transmits the data to the data analysis module, and the data analysis module analyzes the data, converts the data into a control signal and transmits the control signal to the controller;
the data simulation system comprises the following specific working steps:
the method comprises the following steps: the controller transmits the received control signal to the auxiliary PLC control unit, and the auxiliary PLC control unit starts the simulation wind power generation module or the simulation photovoltaic power generation module according to the control signal or simultaneously starts the simulation wind power generation module and the simulation photovoltaic power generation module to work;
step two: the simulation wind power generation module and the simulation photovoltaic power generation module perform power generation work in the same environment of the wind power generation unit and the photovoltaic power generation unit, the electric quantity values generated in unit time in the work of the simulation wind power generation module and the simulation photovoltaic power generation module are respectively set as X1 and X2, and the sum of the electric quantities generated in unit time of the simulation wind power generation module and the simulation photovoltaic power generation module is X3;
step three: the electric quantity statistical unit counts the electric quantity X1, X2 and X3 generated in unit time and transmits X1, X2 and X3 to the data processing module;
step four: the data processing module carries out comparison processing on X1, X2 and X3 and transmits the processing result to the controller, and the processing procedure is as follows:
s1: setting the power generation efficiency of the simulation wind power generation module and the simulation photovoltaic power generation module as 1/n of the power generation efficiency of the wind power generation unit and the photovoltaic power generation unit;
s2: comparing P/n to X1, X2, and X3;
s3: when the P/n is less than or equal to any one of X1, X2 and X3, the data acquired by the data acquisition module is accurate, the power generation amount of any one or the sum of the wind power generation unit and the photovoltaic power generation unit can meet the power demand of a power grid, and the data are transmitted to the controller;
the specific steps of the power generation time estimation module for estimating the time are as follows:
a weather acquisition module acquires actual wind power Y, illumination intensity Z and weather condition duration time T in the running process of a wind power generation unit and a photovoltaic power generation unit;
step two: the weather acquisition module transmits the acquired wind power Y, the illumination intensity Z and the duration time T of the weather condition to the power generation time estimation module;
s1: setting the power generation capacity of the simulated photovoltaic power generation module as A, setting the power generation capacity of the simulated wind power generation module as B, setting X1 as B, Z, t, X2 as A, Y, t, X3 as B, Z, t and Y, wherein t is set unit time;
s2: the power generation time estimation module compares P/n with X1, X2 and X3, when P/n is less than or equal to any one of X1, X2 and X3, the time length of the power supply of the wind power generation unit and the power supply of the photovoltaic power generation unit to the power grid is T, when X1, X2 and X3 are all less than P/n, the wind power generation unit and the photovoltaic power generation unit cannot supply power to the power grid, and the time length of the power supply of the power grid is 0;
s3: the power generation time estimation module transmits the estimated time T to the data processing module and further to the controller.
As a technical optimization scheme of the invention, the controller sends an instruction to the PLC control unit according to a simulation result obtained by the data simulation system, and when the result meets the power consumption requirement of a power grid, the PLC control unit controls the thermal power generation unit to stop generating power and connects the wind power generation unit and the photovoltaic power generation unit with the power grid; and when the result does not meet the requirement of the power grid, the PLC control unit controls the thermal power generation unit to generate power, the wind power generation unit and the photovoltaic power generation unit are separated from the power grid, and the PLC control unit separates the wind power generation unit and the photovoltaic power generation unit from the power grid according to the estimated time T and the estimated time length of power supply.
As a technical optimization scheme of the invention, the display module is used for receiving data sent by the controller in the working process and displaying the data by using the display screen.
As a technical optimization scheme of the invention, the data acquisition module can be further used for acquiring the generated energy of different time periods in the working of the thermal power generation unit, transmitting the generated energy of different time periods to the controller, and setting different P values by the controller according to different time periods.
As a technical optimization scheme of the invention, when the wind power generation unit and the photovoltaic power generation unit are connected to a power grid to work, the data simulation system synchronously works, the generated energy of the wind power generation unit and the photovoltaic power generation unit is simulated in real time and is compared with a preset value, a data signal is transmitted to the controller, when the power consumption requirement of the power grid is not met, the controller controls the wind power generation unit and the photovoltaic power generation unit to be separated from the power grid, the thermal power generation unit starts to work, when the wind power generation unit and the photovoltaic power generation unit are connected to the power grid, a standby power supply is connected to the power grid, and when the wind power generation unit and the photovoltaic power generation unit are switched to the thermal power unit, the standby power supply supplies power to the power grid.
The invention has the following beneficial effects:
(1) the method comprises the steps that firstly, the generated energy of the wind power generation unit and the photovoltaic power generation unit in unit time can be collected in real time through the data collection module, the generated energy is transmitted to the controller, the controller compares the collected data with the set numerical value meeting the use requirement of the power grid, the wind power generation unit and the photovoltaic power generation unit are connected with the power grid, and the thermal power generation unit is closed through the PLC control unit. The wind power generation and the photovoltaic power generation are fully utilized, the condition that daily electricity is used by means of thermal power generation is avoided, energy consumption is saved, the power generation cost is reduced, the environment is protected from being polluted, and the solar photovoltaic power generation system is more environment-friendly.
(2) Meanwhile, the data acquired by the data acquisition module is detected by the data simulation system, the simulated wind power generation module and the simulated photovoltaic power generation module are placed in the same working environment as the wind power generation unit and the photovoltaic power generation unit, whether the generated energy of the wind power generation unit and the photovoltaic power generation unit in unit time can meet the power consumption requirement of a power grid or not is recalculated, the wind power generation unit and the photovoltaic power generation unit can be normally used after being connected into the power grid, and the power consumption condition of the power grid cannot be abnormal;
(3) the invention can realize the free switching between thermal power generation and renewable energy power generation, has higher automation degree and can save the energy consumption to the maximum extent. When the wind power generation unit, the photovoltaic power generation unit and the power grid are connected to work, whether the power output can meet the requirement of the power grid or not can be judged through the data simulation system, and when the power output is not met, the controller can control the thermal power generation unit to start through the PLC control unit, so that the normal use of the power grid is ensured. And when the power generation units are switched, the standby power supply unit can supply power to the power grid, so that the power grid can be continuously used, and abnormal power utilization can not occur.
The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the invention as defined in the following claims.
Claims (5)
1. An access control system for power generation of renewable energy sources is characterized by comprising a controller, a data cache module, a data analysis module, a display module, a data acquisition module, a PLC control unit, a power generation system and a data simulation system;
the controller is in communication connection with a data cache module, the data cache module is in communication connection with a data analysis module, the data analysis module is in communication connection with a controller, the controller is in communication connection with a display module, the controller is in communication connection with a data simulation system, the controller is in communication connection with a PLC control unit, the PLC control unit is in communication connection with a power generation system, the power generation system is in communication connection with a data acquisition module, and the data acquisition module is in communication connection with the controller;
the controller is used for receiving data sent by the data acquisition module, the data simulation system and the data analysis module, comparing and judging the data with preset values, receiving the data of electric quantity sent by the three power generation units, starting the data simulation system to operate, and transmitting the data to the data cache module, the data simulation system, the PLC control unit and the display module;
the data cache module is used for receiving the data signals sent by the controller, storing the data and finally sending the data signals to the data analysis module;
the data analysis module is used for receiving the data sent by the data cache module, analyzing and converting the data and transmitting the data result after analysis and conversion to the controller;
the data acquisition module is used for acquiring the electric quantity generated by three power generation units, namely a wind power generation unit, a thermal power generation unit and a photovoltaic power generation unit in the power generation system in the work per unit time and transmitting the acquired generated energy data to the controller;
the PLC control unit is used for receiving the instruction sent by the controller and changing the working states of the wind power generation unit, the thermal power generation unit, the photovoltaic power generation unit and the power grid according to the instruction;
the power generation system is used for daily power generation, generates power by utilizing wind power, thermal power and photovoltaic power and transmits the generated electric quantity to a power grid, and comprises a wind power generation unit, a thermal power generation unit, a photovoltaic power generation unit and a standby power supply unit;
the wind power generation unit and the photovoltaic power generation unit generate power by utilizing reproducible wind power and light energy, the thermal power generation unit generates power by utilizing thermal power and transmits the generated power to a power grid, the standby power supply unit is used for providing standby power for the power grid, and the standby power supply unit transmits power to the power grid in the conversion process of the wind power generation unit, the photovoltaic power generation unit and the thermal power generation unit;
the data simulation system is used for simulating the electric quantity generated by the photovoltaic power generation unit and the wind power generation unit in unit time under different environments, collecting and transmitting the generated electric quantity to the controller to be compared with a preset value, and comprises an auxiliary PLC control unit, a simulated wind power generation module, a simulated photovoltaic power generation module, an electric quantity statistics unit, a data processing module, a weather collection module and a power generation time estimation module;
the auxiliary PLC control unit is used for receiving a data signal sent by the controller and starting the simulation wind power generation module and the simulation photovoltaic power generation module according to the signal;
the simulation wind power generation module and the simulation photovoltaic power generation module are installed together with the wind power generation unit and the photovoltaic power generation unit, so that the power generation states of the wind power generation unit and the photovoltaic power generation unit under different environments can be simulated;
the electric quantity counting unit is used for detecting the electric quantity generated by the simulation wind power generation module and the simulation photovoltaic power generation module in unit time and transmitting the detected data to the data processing module, and the data processing module integrates the data and transmits the data to the controller;
the weather acquisition module is used for acquiring actual wind power and illumination intensity in the running process of the wind power generation unit and the photovoltaic power generation unit and transmitting the acquired data to the power generation time estimation module, and the power generation time estimation module estimates the duration time of the wind power generation unit and the photovoltaic power generation unit reaching the power supply requirement according to the received data and transmits the estimated time data to the data processing module;
the data acquisition module acquires data and the controller controls and starts the data simulation system, and the method comprises the following specific steps:
the method comprises the following steps: the data acquisition module transmits the acquired electric quantity W1 generated by the wind power generation unit in unit time, the acquired electric quantity W2 generated by the photovoltaic power generation unit in unit time and the total data W3 generated by the photovoltaic power generation unit in unit time to the controller, wherein the data W1, the data W2 and the data W3 are transmitted to the controller;
step two: the controller compares the collected data W1, W2 and W3 with a preset electric quantity data value P, wherein P is a numerical value of a power grid which can meet the normal power supply requirement, and when any one of W1, W2 and W3 is more than or equal to P, the controller starts a data simulation system;
step three: the controller stores the data through the data caching module, the data caching module transmits the data to the data analysis module, and the data analysis module analyzes the data, converts the data into a control signal and transmits the control signal to the controller;
the data simulation system comprises the following specific working steps:
the method comprises the following steps: the controller transmits the received control signal to the auxiliary PLC control unit, and the auxiliary PLC control unit starts the simulation wind power generation module or the simulation photovoltaic power generation module according to the control signal or simultaneously starts the simulation wind power generation module and the simulation photovoltaic power generation module to work;
step two: the simulation wind power generation module and the simulation photovoltaic power generation module perform power generation work in the same environment of the wind power generation unit and the photovoltaic power generation unit, the electric quantity values generated in unit time in the work of the simulation wind power generation module and the simulation photovoltaic power generation module are respectively set as X1 and X2, and the sum of the electric quantities generated in unit time of the simulation wind power generation module and the simulation photovoltaic power generation module is X3;
step three: the electric quantity statistical unit counts the electric quantity X1, X2 and X3 generated in unit time and transmits X1, X2 and X3 to the data processing module;
step four: the data processing module carries out comparison processing on X1, X2 and X3 and transmits the processing result to the controller, and the processing procedure is as follows:
s1: setting the power generation efficiency of the simulation wind power generation module and the simulation photovoltaic power generation module as 1/n of the power generation efficiency of the wind power generation unit and the photovoltaic power generation unit;
s2: comparing P/n to X1, X2, and X3;
s3: when the P/n is less than or equal to any one of X1, X2 and X3, the data acquired by the data acquisition module is accurate, the power generation amount of any one or the sum of the wind power generation unit and the photovoltaic power generation unit can meet the power demand of a power grid, and the data are transmitted to the controller;
the specific steps of the power generation time estimation module for estimating the time are as follows:
a weather acquisition module acquires actual wind power Y, illumination intensity Z and weather condition duration time T in the running process of a wind power generation unit and a photovoltaic power generation unit;
step two: the weather acquisition module transmits the acquired wind power Y, the illumination intensity Z and the lasting time T of the weather condition to the power generation time estimation module;
s1: setting the power generation capacity of the simulated photovoltaic power generation module as A, setting the power generation capacity of the simulated wind power generation module as B, wherein X1= B Y t, X2= A Z t, X3= B Y t + A Z t, and t is set unit time;
s2: the power generation time estimation module compares P/n with X1, X2 and X3, when P/n is less than or equal to any one of X1, X2 and X3, the time length of the power supply of the wind power generation unit and the power supply of the photovoltaic power generation unit to the power grid is T, when X1, X2 and X3 are all less than P/n, the wind power generation unit and the photovoltaic power generation unit cannot supply power to the power grid, and the time length of the power supply of the power grid is 0;
s3: the power generation time estimation module transmits the estimated time T to the data processing module and further to the controller.
2. The access control system for renewable energy power generation according to claim 1, wherein the controller sends an instruction to the PLC control unit according to a simulation result obtained by the data simulation system, and when the result meets a power demand of a power grid, the PLC control unit controls the thermal power generation unit to stop power generation, and the wind power generation unit and the photovoltaic power generation unit are accessed to the power grid; and when the result does not meet the requirement of the power grid, the PLC control unit controls the thermal power generation unit to generate power, the wind power generation unit and the photovoltaic power generation unit are separated from the power grid, and the PLC control unit separates the wind power generation unit and the photovoltaic power generation unit from the power grid according to the estimated time T and the estimated time length of power supply.
3. The access control system for renewable energy power generation of claim 1, wherein the display module is configured to receive data sent by the controller during operation and display the data on a display screen.
4. The access control system for renewable energy power generation according to claim 1, wherein the data acquisition module is further configured to acquire power generation amounts of different time periods during operation of the thermal power generation unit, and transmit the power generation amounts of different time periods to the controller, and the controller sets different P values according to the different time periods.
5. The access control system of renewable energy power generation of claim 1, wherein when the wind power generation unit and the photovoltaic power generation unit are connected to the power grid for operation, the data simulation system operates synchronously, simulates the power generation capacity of the wind power generation unit and the photovoltaic power generation unit in real time, compares the power generation capacity with a preset value, transmits a data signal to the controller, when the power demand of the power grid is not met, the controller controls the wind power generation unit and the photovoltaic power generation unit to be disconnected from the power grid, the thermal power generation unit starts to operate, when the wind power generation unit and the photovoltaic power generation unit are connected to the power grid, the standby power supply is connected to the power grid at the same time, and when the wind power generation unit and the photovoltaic power generation unit are switched to the thermal power generation unit, the standby power supply supplies power to the power grid.
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