CN117474159A - Wave energy power generation platform regulation and control method and device - Google Patents
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Abstract
The application discloses a wave energy power generation platform regulation and control method and device, relates to the technical field of wave energy power generation, and aims to solve the constraint condition relation among an energy optimization model and an optimization model, which are used for minimizing the running cost of a system, minimizing carbon emission and maximizing clean energy consumption, by taking a semi-submersible wave energy power generation device as a main body according to the running mode of wave energy power generation platform power equipment and collecting marine environment data, and finally solving the energy optimization model, so that an optimal regulation and control scheme which is more in line with the current marine environment change and the requirements of staff on the wave energy power generation platform is obtained according to a solving result, and the technical problem of electric power fluctuation of the existing wave energy power generation platform is solved.
Description
Technical Field
The application relates to the technical field of wave energy power generation, in particular to a wave energy power generation platform regulation and control method and device.
Background
Along with the adjustment of industrial structures and energy structures, the high-speed development of new energy and clean energy is promoted, and wave energy power generation is an important ring for solving the problem of future energy in China because of the huge kinetic energy and potential energy stored in ocean waves.
Because the wave energy power generation device continuously expands the power generated, the integrated function is more and more perfect, the electric energy load in the wave energy power generation device is increased and diversified, the wave energy power generation device is generally located in a deep sea area, the variable marine climate directly influences the wave energy power generation power, the power generation of the wave energy power generation device has intermittence and volatility, and the wave energy power generation device needs to be coordinated with other auxiliary power generation equipment for power generation, so that the difficulty of power generation regulation and control is high, the situation of excessive power generation or insufficient power generation easily occurs, and the normal production of the wave energy power generation platform and the power requirements of workers on the platform are influenced.
Disclosure of Invention
The application provides a wave energy power generation platform regulation and control method and device, which are used for solving the technical problems of high regulation and control difficulty and power fluctuation of the existing wave energy power generation platform.
In order to solve the technical problem, a first aspect of the present application provides a method for adjusting and controlling a wave power generation platform, including:
collecting marine environment data;
according to the electric power equipment contained in the wave energy power generation platform, in combination with the offshore environment data,
an energy optimization model is established, and the energy optimization model is used for regulating and optimizing the wave energy power generation platform according to an optimization objective function for minimizing the running cost of the system, minimizing the carbon emission and maximizing the clean energy consumption; determining constraint condition relation of the energy optimization model according to the equipment parameters of each piece of electric equipment;
and solving the energy optimization model according to the energy optimization model and the constraint condition relational expression, and determining a regulation and control optimization scheme of the wave energy power generation platform according to a solving result.
Preferably, the marine environment data specifically includes: illumination irradiance, ambient temperature, wind speed, wave period, wave height, and sea water density.
Preferably, the power device includes: wave energy power generation equipment, photovoltaic power generation equipment, fossil fuel power generation equipment, energy storage equipment, sea water desalination equipment, ballast system equipment, on-board electrical load equipment and an external power grid.
Preferably, the optimization objective function of the energy optimization model is specifically:
minC＝C w +C p +C cp +C d +C sd +C cd +C b +C s +C z -C v
wherein C is w C, generating running cost for wave energy p C is the operation cost of photovoltaic power generation cp To reject penalty cost, C d For the running cost of fossil fuel power plant, C sd C is the start-stop cost of fossil fuel power generation equipment cd Punishment cost for carbon emission, C b C is the charge and discharge cost of the storage battery s C is the running cost of the sea water desalination system z Backup electric energy cost for ballast system equipment, C v For the electric energy benefit transmitted to the main network through the submarine cable, L is the total number of wave energy generators, T is the total regulation period,maintaining a cost factor for the operation of the ith generator, < >>The output power of the ith generator at the moment t, delta t is the regulation time scale, and the +.>Investment cost coefficient for ith wave energy generator，/>Rated power T of ith wave energy generator i w The service cycle time of the ith wave energy generator is the total photovoltaic power generation number E, and the service cycle time is +.>Maintaining a cost factor for the ith group of photovoltaic operations,/->For the ith group of photovoltaic power generation output power at time t, < >>For group i photovoltaic investment cost coefficient, < ->Rated power for group i photovoltaic, T i p For group i photovoltaic service cycle time, M is the total number of fossil fuel power plants, +.>For the active power output of the ith fossil fuel power plant at time t, +>The fuel cost coefficients of the ith fossil fuel power plant,management cost coefficient, installation cost per unit capacity, capital recovery coefficient, respectively for ith fossil fuel power plant operation>T i d 、/>Maximum output power, annual operating hours and unit capacity of the ith fossil fuel power plant,/-respectively>For the unit start-stop cost coefficient of fossil fuel power plant, < >>For the start-stop state sign delta of the ith fossil fuel power plant at the moment t p For the carbon dioxide emission cost factor,/->For the output power of the ith fossil fuel power plant at time t, N is the total number of storage batteries,/->The power of the storage battery and the power of the discharge of the ith group of storage batteries at the t moment are respectively>The operation cost, the electric power and the capacity investment cost coefficient of the storage battery of the ith group are respectively +.>T i b 、/>Respectively, rated power of the i th group of storage battery, annual operation hours, maximum capacity of the storage battery, alpha s Is the running cost coefficient, P of the sea water desalination equipment t s Is the running power of the sea water desalination equipment at the moment t, alpha z Backup power cost factor, P, required for ballast system t z For the time t the power required for the ballast system is +.>Selling electricity to a main network for the wave energy power generation platform at the moment t; p (P) t v And the power transmitted to the main network through the submarine cable at the moment t.
Preferably, the constraint relation specifically includes: the method comprises the following steps of upper and lower limit constraint of output power of a wave energy generator set, upper and lower limit constraint of output power of photovoltaic power generation, upper and lower limit constraint of output power of fossil fuel power generation, climbing constraint of output power of fossil fuel power generation, storage battery charge and discharge power constraint, storage battery storage capacity constraint, upper and lower limit constraint of power of sea water desalination equipment, upper and lower limit constraint of fresh water storage capacity, upper and lower limit constraint of power of ballast system equipment standby power, upper and lower limit constraint of capacity of ballast system equipment standby power and total system power balance constraint.
Meanwhile, the second aspect of the present application also provides a wave energy power generation platform regulation and control device, comprising:
the environment data acquisition unit is used for acquiring offshore environment data;
the energy optimization model is used for adjusting and optimizing the wave energy power generation platform according to an optimization objective function which minimizes the system running cost, minimizes carbon emission and maximizes clean energy consumption;
the constraint condition determining unit is used for determining constraint condition relation of the energy optimization model according to the equipment parameters of each piece of electric equipment;
and the regulation and control scheme determining unit is used for solving the energy optimization model according to the energy optimization model and the constraint condition relation, and determining the regulation and control optimization scheme of the wave energy power generation platform according to a solving result.
Preferably, the marine environment data specifically includes: illumination irradiance, ambient temperature, wind speed, wave period, wave height, and sea water density.
Preferably, the power device includes: wave energy power generation equipment, photovoltaic power generation equipment, fossil fuel power generation equipment, energy storage equipment, sea water desalination equipment, ballast system equipment, on-board electrical load equipment and an external power grid.
Preferably, the optimization objective function of the energy optimization model is specifically:
min C＝C w +C p +C cp +C d +C sd +C cd +C b +C s +C z -C v
wherein C is w C, generating running cost for wave energy p C is the operation cost of photovoltaic power generation cp To reject penalty cost, C d For the running cost of fossil fuel power plant, C sd C is the start-stop cost of fossil fuel power generation equipment cd Punishment cost for carbon emission, C b C is the charge and discharge cost of the storage battery s C is the running cost of the sea water desalination system z Backup electric energy cost for ballast system equipment, C v For the electric energy benefit transmitted to the main network through the submarine cable, L is the total number of wave energy generators, T is the total regulation period,maintaining a cost factor for the operation of the ith generator, < >>The output power of the ith generator at the moment t, delta t is the regulation time scale, and the +.>Investment cost coefficient for ith wave energy generator, < ->Rated power T of ith wave energy generator i w The service cycle time of the ith wave energy generator is the total photovoltaic power generation number E, and the service cycle time is +.>Maintaining a cost factor for the ith group of photovoltaic operations,/->For the ith group of photovoltaic power generation output power at time t, < >>For group i photovoltaic investment cost coefficient, < ->Rated power for group i photovoltaic, T i p For group i photovoltaic service cycle time, M is the total number of fossil fuel power plants, +.>For the active power output of the ith fossil fuel power plant at time t, +>The fuel cost coefficients of the ith fossil fuel power plant,management cost coefficient, installation cost per unit capacity, capital recovery coefficient, respectively for ith fossil fuel power plant operation>T i d 、/>Maximum output power, annual operating hours and unit capacity of the ith fossil fuel power plant,/-respectively>For the unit start-stop cost coefficient of fossil fuel power plant, < >>For the start-stop state sign delta of the ith fossil fuel power plant at the moment t p For the carbon dioxide emission cost factor,/->For the output power of the ith fossil fuel power plant at time t, N is the total number of storage batteries,/->The power of the storage battery and the power of the discharge of the ith group of storage batteries at the t moment are respectively>The operation cost, the electric power and the capacity investment cost coefficient of the storage battery of the ith group are respectively +.>T i b 、/>Respectively is rated power and annual operation of the ith group of storage batteries are smallTime number, maximum capacity of accumulator, alpha s Is the running cost coefficient, P of the sea water desalination equipment t s Is the running power of the sea water desalination equipment at the moment t, alpha z Backup power cost factor, P, required for ballast system t z For the time t the power required for the ballast system is +.>Selling electricity to a main network for the wave energy power generation platform at the moment t; p (P) t v And the power transmitted to the main network through the submarine cable at the moment t.
Preferably, the constraint relation specifically includes: the method comprises the following steps of upper and lower limit constraint of output power of a wave energy generator set, upper and lower limit constraint of output power of photovoltaic power generation, upper and lower limit constraint of output power of fossil fuel power generation, climbing constraint of output power of fossil fuel power generation, storage battery charge and discharge power constraint, storage battery storage capacity constraint, upper and lower limit constraint of power of sea water desalination equipment, upper and lower limit constraint of fresh water storage capacity, upper and lower limit constraint of power of ballast system equipment standby power, upper and lower limit constraint of capacity of ballast system equipment standby power and total system power balance constraint.
From the above technical scheme, the application has the following advantages:
according to the operation mode of the power equipment of the semi-submersible wave power generation platform, the collected marine environment data are combined, operation cost data of each power equipment are calculated, then the semi-submersible wave power generation device is taken as a main body, constraint condition relation formulas of an energy optimization model and an optimization model for minimizing system operation cost, minimizing carbon emission and maximizing clean energy consumption are built by combining the operation cost data, finally, the energy optimization model is solved, and according to a solving result, an optimal regulation scheme which better accords with current marine environment change and requirements of workers on the wave power generation platform is obtained, so that the technical problem of power fluctuation of the existing wave power generation platform is solved, and the operation cost of wave power generation is further reduced.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive faculty for a person skilled in the art.
Fig. 1 is a schematic flow chart of an embodiment of a method for regulating and controlling a wave energy power generation platform.
Fig. 2 is a schematic diagram of a semi-submersible wave energy power generation platform energy architecture provided herein.
Fig. 3 is a schematic structural diagram of an embodiment of a wave energy power generation platform regulation device provided in the present application.
Detailed Description
The embodiment of the application provides a wave energy power generation platform regulation and control method and device, which are used for solving the technical problems of high regulation and control difficulty and power fluctuation of the existing wave energy power generation platform.
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the embodiments described below are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
Firstly, the embodiment of the wave energy power generation platform regulation and control method is described in detail, and the method is specifically as follows:
referring to fig. 1, the method for adjusting and controlling a wave energy power generation platform provided in this embodiment includes:
and 101, collecting offshore environment data.
It should be noted that, the technical solution provided in this embodiment may collect the marine environmental data of the area where the wave energy power generation platform is located according to a timing collection triggered by a preset time scale or a real-time collection manner triggered by an instant instruction.
Wherein the collected marine environmental data may include: illumination radiation degree F at time t t p Ambient temperature T at time T t p Wind speed v, wave period H, wave height H and sea water density ρ.
Next, according to the power equipment included in the wave power generation platform, as shown in fig. 2, power generation equipment such as wave power generation equipment and photovoltaic power generation equipment, and electric equipment such as sea water desalination equipment, on-board load, and external power grid are mentioned in this embodiment.
Step 102, constructing an energy optimization model comprising an optimization objective function for minimizing system running cost, minimizing carbon emission and maximizing clean energy consumption according to electric equipment contained in the wave energy power generation platform and combining offshore environment data.
More specifically, the energy optimization model constructed in this embodiment is used to construct an energy optimization objective function of a semi-submersible wave power generation platform by minimizing the system running cost and carbon emission and maximizing clean energy consumption, and mainly includes: wave energy power generation running cost C w Photovoltaic power generation operation cost C p Cost of light rejection penalty C cp Cost of operation of fossil fuel generator C d Start-stop cost C sd And carbon emission penalty cost C cd Cost C of charging and discharging of storage battery b Running cost C of sea water desalination system s Standby electric energy cost C required for ballast system z Electric energy benefit C transmitted to main network through submarine cable v . The objective function is shown in the following formula:
minC＝C w +C p +C cp +C d +C sd +C cd +C b +C s +C z -C v (1)
wave energy power generation running cost C w The running maintenance cost of the wave energy generator is mainly as follows:
wherein: l is the total number of the wave energy generators; t is the total regulation period;maintaining a cost coefficient for the operation of the ith generator; />The output power of the ith generator at the moment t; Δt is the regulation time scale; />Investment cost coefficients for the ith wave energy generator; />Rated power of the ith wave energy generator; t (T) i w Service cycle time for the ith wave energy generator; g is gravity acceleration; zeta type toy 1 、ξ 2 、ω 1 、ω 2 、ζ 1 、ζ 2 Respectively, the undetermined coefficients.
Photovoltaic power generation operation cost C p The operation and maintenance cost and the investment cost of the photovoltaic are mainly as shown in the following formula:
wherein: e is the total number of photovoltaic power generation;maintaining a cost coefficient for the ith group of photovoltaic operations; />The output power of the ith group of photovoltaic power generation at the t moment; />The photovoltaic investment cost coefficient of the ith group; />Rated power for group i photovoltaic; t (T) i p The service cycle time of the ith group of photovoltaic service; />Respectively the maximum power generation, solar radiation intensity and surface temperature of the ith group of photovoltaic panels under the standard test environment; />Is the temperature coefficient of the solar power generation power of the i group.
Photovoltaic power generation discarding punishment cost C cp The method is mainly characterized by calculating the light rejection electric quantity and the light rejection penalty coefficient, wherein the light rejection electric quantity and the light rejection penalty coefficient are shown in the following formula:
wherein:penalty coefficients for the ith group of photovoltaic light rejection; />The power generated by the ith group of photovoltaics at the moment t is estimated.
Fossil fuel generator operating cost C d Mainly the associated fuel costs, as shown in the following formula:
wherein: m is the total number of fossil fuel generators;the active output of the ith fossil fuel generator at the t moment;fuel cost coefficients of the ith fossil fuel generator respectively; /> The operation management cost coefficient, the unit capacity installation cost and the capital recovery coefficient of the ith fossil fuel generator are respectively; />T i d 、/>The maximum output power, the annual operating hours and the unit capacity of the ith fossil fuel generator are respectively.
Fossil fuel generator start-stop cost C sd The system is mainly influenced by the intermittence and fluctuation of clean energy power, when an emergency appears in the system, the fossil fuel generator is temporarily started to maintain the normal operation of the system, and when the corresponding task is completed, the fossil fuel generator can be stopped. The start-stop cost is considered in optimization, and after the economic consideration is combined, on the premise of ensuring the normal operation of the system, the start-stop state is influenced by global optimization, so that the start-stop times can be reduced for reducing the carbon dioxide emission, and the power generation can be started immediately under extreme conditions to maintain the normal operation of the system.
Wherein:a unit start-stop cost coefficient for the fossil fuel generator; />For the i-th fossil fuel generator start-stop state mark at time t,/>
Fossil fuel generator carbon emission penalty cost C cd In order to reduce carbon dioxide released by the fossil fuel generator in the power generation process, under the condition of ensuring the stable operation of a power system, corresponding punishment is carried out on the fossil fuel generator according to the quantity of generated power, so that the use of the fossil fuel generator is reduced as much as possible, and clean power is preferentially used, wherein the clean power is represented by the following formula:
wherein: delta p Is a carbon dioxide emission cost factor.
Charge and discharge cost C of accumulator b The investment cost of charge and discharge cost, storage battery power and capacity is mainly as follows:
wherein: n is the total number of the storage batteries;the power storage power and the discharge power of the ith group of storage batteries at the t moment are respectively;the running cost, the electric power and the capacity investment cost coefficients of the ith group of storage batteries are respectively; />T i b 、/>The rated power, the number of annual operating hours and the maximum capacity of the storage battery of the ith group are respectively.
Cost of sea water desalination C s The method mainly comprises the steps of running cost of the sea water desalination equipment, wherein the sea water desalination equipment is used as a controllable load, and the working time of the sea water desalination equipment can be shifted according to the fresh water storage capacity and the power generation condition of clean energy, and the formula is as follows:
wherein: alpha s Is the running cost coefficient of the sea water desalination equipment; p (P) t s The operating power of the sea water desalination equipment at the moment t.
Backup electric energy cost C required for ballast system z Depending on the situation, when the system is stably operated and the clean energy generating capacity is sufficient, the standby electric energy cost required by the ballast system is zero, and the judgment condition theta is less than 0; otherwise, the electric energy required by the ballast system is supplied by a storage battery, and the judgment condition theta=0 is assumed; when the system fails, the clean energy and the storage battery can not meet the electric energy required by the ballast system, the electric energy of the ballast system is required to be provided by a fossil fuel generator, and the judgment condition theta is supposed to be more than 0. The formula is as follows:
wherein: alpha z A backup power cost factor required for the ballast system; p (P) t z And (5) the standby electric power required by the ballast system at the moment t.
Electric energy benefit C transmitted to main network through submarine cable v The method mainly considers the benefits generated by selling electricity to a main network by the electric energy generated by the residual clean energy after the electric energy required by the whole load in the ship body is met by the clean energy, and the formula is as follows:
wherein:selling electricity to a main network for the wave energy power generation platform at the moment t; p (P) t v And the power transmitted to the main network through the submarine cable at the moment t.
And 104, determining constraint condition relation of the energy optimization model according to the equipment parameters of each piece of electric equipment.
And then, according to the equipment parameters of the electric equipment contained in the semi-submersible wave energy power generation platform, establishing constraint conditions of an energy optimization model, and mainly considering upper and lower limit constraint of the output power of a wave energy generator set, upper and lower limit constraint of the output power of a photovoltaic power generation, upper and lower limit constraint of the output power of a fossil generator, climbing constraint of the output power of the fossil fuel power generation, charging and discharging power constraint of a storage battery, storage capacity constraint of the storage battery, upper and lower limit constraint of the power of sea water desalination equipment, upper and lower limit constraint of the fresh water storage capacity, upper and lower limit constraint of the power of the standby power of ballast system equipment, upper and lower limit constraint of the capacity of the standby power of the ballast system equipment and power balance constraint of the system.
Wave energy power generation mainly considers the upper and lower limit constraint of output power, and the formula is as follows:
wherein:the minimum and maximum active output of the ith wave energy generator are respectively obtained.
The photovoltaic power generation mainly considers the upper and lower limit constraint of output power, and the formula is as follows:
wherein:respectively the ith group of photovoltaic generatorsMinimum and maximum active force of electricity.
The fossil fuel generator mainly considers the upper and lower limit constraint of the output power as shown in a formula (16), and the climbing constraint is shown in a formula (17):
wherein:minimum and maximum active power output of the i-th group fossil fuel generator, respectively;the ramp down and ramp up rates for the i-th group of fossil fuel generators, respectively.
The storage battery charge and discharge power constraint is shown as a formula (18), and the storage battery storage capacity constraint is shown as a formula (19):
wherein:charging/discharging sign of i-th group of storage battery at t time respectively> Indicating that the ith group of storage batteries cannot be charged and discharged at the same time at the moment t; />The charge and discharge capacity of the ith group of storage batteries at the t moment; />And (5) charging efficiency for the ith group of storage batteries.
The sea water desalting equipment mainly considers that the upper and lower limit constraint of the load power of the equipment is shown as a formula (20), and the upper and lower limit constraint of the purified fresh water storage capacity is shown as a formula (21):
wherein:the upper limit and the lower limit of the load power of the sea water desalination equipment are respectively set; />To make a status sign for the start-up and shut-down of the sea water desalination plant, < > for the sea water desalination plant> The upper and lower limits of fresh water storage capacity are respectively set.
The submerging and the floating of the wave energy power generation platform are mainly realized by a ballast system, and the ship is submerged and floated by injecting water and draining water into the ship, so as to cope with changeable severe weather on the sea. The traditional method mainly utilizes an emergency power generation system to realize the functions, namely, the fossil fuel generator is used for providing power, and the method can utilize clean energy to finish the functions through energy optimization and regulation, so that the condition that the fossil fuel generator is used once weather changes occur is avoided. There is therefore a need to provide backup power for ballast systems
Wherein: p (P) t z The standby electric power required by the ballast system at the moment t;the reserve capacity required for the ballast system at time t.
The system power balance constraint is the equality constraint of wave energy power generation output power, photovoltaic power generation output power, fossil fuel generator output power, storage battery charge and discharge power and shipboard power load, and the formula is as follows:
wherein: u is the total number of conventional electrical loads on the hull;the ith electrical load at time t.
And 105, solving the energy optimization model according to the energy optimization model and the constraint condition relation, and determining a regulation and control optimization scheme of the wave energy power generation platform according to a solving result.
Finally, the energy optimization model established based on the semi-submersible wave energy power generation platform is a hybrid integration linear scale model, the objective function is established in the detailed formulas (1) - (13), the constraint conditions of the model are detailed in the formulas (14) - (24), and the optimization problem can be solved by using a solving tool including but not limited to CPLEX and GUROBI or a heuristic algorithm including but not limited to a genetic algorithm, a particle swarm algorithm, an ant colony algorithm and the like, so that an optimal result is obtained.
Compared with the existing optimization regulation and control of wave energy power generation and ship energy aiming at an island micro-grid, the wave energy power generation platform regulation and control method provided by the embodiment constructs a power utilization strategy that the semi-submersible wave energy power generation ship body preferentially utilizes clean energy power to supply power according to the power utilization mode of the semi-submersible wave energy power generation platform, and redundant electric energy generated by the clean energy is collected into a main grid through a submarine cable under the condition that self-contained power supply of the ship body is met. The method can effectively regulate and control the generation and utilization of energy on the semi-submersible wave energy power generation ship body, and relieve the influence of the intermittence and fluctuation of wave energy power generation and photovoltaic power generation on the power supply stability of the ship body; the wave energy power generation platform is submerged and floated by utilizing clean energy power through energy optimization regulation, different power supply schemes are implemented on the ballast system according to the condition of clean energy power generation, the emergency power generation system is prevented from being started once the sea weather changes, namely, the scheme of supplying power to the ballast system by utilizing the fossil fuel generator is utilized, and the self-supply rate of the clean energy of the ship body is further improved; an energy optimization regulation model of the semi-submersible wave energy power generation platform is established, an optimal regulation scheme is obtained by solving the model through CPLEX, GUROBI, heuristic algorithms and the like, and on the premise that the wave energy power generation platform is ensured to safely and stably operate, the operation cost of wave energy power generation can be further reduced, the economy of system operation is improved, and the emission amount of carbon dioxide generated in the system operation process can be reduced.
The above is a detailed description of a specific embodiment of a method for adjusting and controlling a wave power generation platform, and the following is a detailed description of an embodiment of a device for adjusting and controlling a wave power generation platform.
Referring to fig. 3, a wave energy power generation platform regulation device provided in this embodiment includes:
an environmental data collection unit 201 for collecting marine environmental data;
the optimizing model constructing unit 202 is configured to construct a corresponding energy optimizing model according to power equipment included in the wave energy generating platform and in combination with the offshore environmental data, minimize system running cost, minimize carbon emission, and maximize an optimizing objective function of clean energy consumption, and perform regulation and control optimization on the wave energy generating platform;
a constraint condition determining unit 203, configured to determine a constraint condition relation of the energy optimization model according to the device parameters of each power device;
the regulation and control scheme determining unit 204 is configured to solve the energy optimization model according to the energy optimization model and the constraint condition relation, and determine a regulation and control optimization scheme of the wave energy power generation platform according to the solution result.
Further, the marine environmental data specifically includes: illumination irradiance, ambient temperature, wind speed, wave period, wave height, and sea water density.
Further, the power device includes: wave energy power generation equipment, photovoltaic power generation equipment, fossil fuel power generation equipment, energy storage equipment, sea water desalination equipment, ballast system equipment, on-board electrical load equipment and an external power grid.
Further, the optimization objective function of the energy optimization model is specifically:
minC＝C w +C p +C cp +C d +C sd +C cd +C b +C s +C z -C v
wherein C is w C, generating running cost for wave energy p C is the operation cost of photovoltaic power generation cp To reject penalty cost, C d For the running cost of fossil fuel power plant, C sd C is the start-stop cost of fossil fuel power generation equipment cd Punishment cost for carbon emission, C b C is the charge and discharge cost of the storage battery s C is the running cost of the sea water desalination system z Backup electric energy cost for ballast system equipment, C v For the electric energy benefit transmitted to the main network through the submarine cable, L is the total number of wave energy generators, T is the total regulation period,maintaining a cost factor for the operation of the ith generator, < >>The output power of the ith generator at the moment t, delta t is the regulation time scale, and the +.>Investment cost coefficient for ith wave energy generator, < ->Rated power T of ith wave energy generator i w Service cycle time of ith wave energy generator, E is lightTotal number of photovoltaic power generation->Maintaining a cost factor for the ith group of photovoltaic operations,/->For the ith group of photovoltaic power generation output power at time t, < >>For group i photovoltaic investment cost coefficient, < ->Rated power for group i photovoltaic, T i p For group i photovoltaic service cycle time, M is the total number of fossil fuel power plants, +.>For the active power output of the ith fossil fuel power plant at time t, +>Fuel cost coefficients for the ith fossil fuel power plant, respectively,>management cost coefficient, installation cost per unit capacity, capital recovery coefficient, respectively for ith fossil fuel power plant operation>T i d 、/>Maximum output power, annual operating hours and unit capacity of the ith fossil fuel power plant,/-respectively>For the unit start-stop cost coefficient of fossil fuel power plant, < >>Fossils at time tStart-stop state sign delta of fuel power plant p For the carbon dioxide emission cost factor,/->For the output power of the ith fossil fuel power plant at time t, N is the total number of storage batteries,/->The power of the storage battery and the power of the discharge of the ith group of storage batteries at the t moment are respectively>The operation cost, the electric power and the capacity investment cost coefficient of the storage battery of the ith group are respectively +.>T i b 、/>Respectively, rated power of the i th group of storage battery, annual operation hours, maximum capacity of the storage battery, alpha s Is the running cost coefficient, P of the sea water desalination equipment t s Is the running power of the sea water desalination equipment at the moment t, alpha z Backup power cost factor, P, required for ballast system t z For the time t the power required for the ballast system is +.>Selling electricity to a main network for the wave energy power generation platform at the moment t; p (P) t v And the power transmitted to the main network through the submarine cable at the moment t.
Further, the constraint relation specifically includes: the method comprises the following steps of upper and lower limit constraint of output power of a wave energy generator set, upper and lower limit constraint of output power of photovoltaic power generation, upper and lower limit constraint of output power of fossil fuel power generation, climbing constraint of output power of fossil fuel power generation, storage battery charge and discharge power constraint, storage battery storage capacity constraint, upper and lower limit constraint of power of sea water desalination equipment, upper and lower limit constraint of fresh water storage capacity, upper and lower limit constraint of power of ballast system equipment standby power, upper and lower limit constraint of capacity of ballast system equipment standby power and total system power balance constraint.
It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the apparatus and units described above may refer to corresponding procedures in the foregoing method embodiments, which are not described herein again.
In the several embodiments provided in this application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.
The terms "first," "second," "third," "fourth," and the like in the description of the present application and in the above-described figures, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the present application described herein may be implemented, for example, in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
It should be understood that in this application, "at least one" means one or more, and "a plurality" means two or more. "and/or" for describing the association relationship of the association object, the representation may have three relationships, for example, "a and/or B" may represent: only a, only B and both a and B are present, wherein a, B may be singular or plural. The character "/" generally indicates that the context-dependent object is an "or" relationship. "at least one of" or the like means any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one (one) of a, b or c may represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", wherein a, b, c may be single or plural.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied essentially or in part or all of the technical solution or in part in the form of a software product stored in a storage medium, including instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The above embodiments are merely for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.
Claims (10)
1. The wave energy power generation platform regulation and control method is characterized by comprising the following steps of:
collecting marine environment data;
according to the power equipment contained in the wave energy power generation platform, combining the offshore environment data, constructing an energy optimization model, wherein the energy optimization model is used for regulating and optimizing the wave energy power generation platform according to an optimization objective function of minimizing the system running cost, minimizing the carbon emission and maximizing the clean energy consumption;
determining constraint condition relation of the energy optimization model according to the equipment parameters of each piece of electric equipment;
and solving the energy optimization model according to the energy optimization model and the constraint condition relational expression, and determining a regulation and control optimization scheme of the wave energy power generation platform according to a solving result.
2. The method for regulating and controlling a wave energy power generation platform according to claim 1, wherein the marine environment data specifically comprises: illumination irradiance, ambient temperature, wind speed, wave period, wave height, and sea water density.
3. The method for regulating and controlling a wave energy power generation platform according to claim 1, wherein the power equipment comprises: wave energy power generation equipment, photovoltaic power generation equipment, fossil fuel power generation equipment, energy storage equipment, sea water desalination equipment, ballast system equipment, on-board electrical load equipment and an external power grid.
4. The method for regulating and controlling a wave energy power generation platform according to claim 3, wherein the optimization objective function of the energy optimization model is specifically:
min
wherein C is w C, generating running cost for wave energy p C is the operation cost of photovoltaic power generation cp To reject penalty cost, C d For the running cost of fossil fuel power plant, C sd C is the start-stop cost of fossil fuel power generation equipment cd Punishment cost for carbon emission, C b C is the charge and discharge cost of the storage battery s C is the running cost of the sea water desalination system z Backup electric energy cost for ballast system equipment, C v For the electric energy benefit transmitted to the main network through the submarine cable, L is the total number of wave energy generators, T is the total regulation period,maintaining a cost factor for the operation of the ith generator, < >>The output power of the ith generator at the moment t, delta t is the regulation time scale, and the +.>Investment cost coefficient for ith wave energy generator, < ->Rated power T of ith wave energy generator i w The service cycle time of the ith wave energy generator is the total photovoltaic power generation number E, and the service cycle time is +.>Maintaining a cost factor for the ith group of photovoltaic operations,/->For the ith group of photovoltaic power generation output power at time t, < >>For group i photovoltaic investment cost coefficient, < ->Rated power for group i photovoltaic, T i p For group i photovoltaic service cycle time, M is the total number of fossil fuel power plants, +.>For the active power output of the ith fossil fuel power plant at time t, +>β i d 、λ i d Fuel cost coefficients for the ith fossil fuel power plant, respectively,>the cost coefficient of operation management, the cost of installation per unit capacity, the coefficient of capital recovery for the ith fossil fuel power plant,T i d 、/>maximum output power, annual operating hours and unit capacity of the ith fossil fuel power plant,/-respectively>To be ofA fossil fuel power plant unit start-stop cost factor, < ->For the start-stop state sign delta of the ith fossil fuel power plant at the moment t p For the carbon dioxide emission cost factor,/->For the output power of the ith fossil fuel power plant at time t, N is the total number of storage batteries,/->The power of the storage battery and the power of the discharge of the ith group of storage batteries at the t moment are respectively>The operation cost, the electric power and the capacity investment cost coefficient of the storage battery of the ith group are respectively +.>T i b 、/>Respectively, rated power of the i th group of storage battery, annual operation hours, maximum capacity of the storage battery, alpha s Is the running cost coefficient, P of the sea water desalination equipment t s Is the running power of the sea water desalination equipment at the moment t, alpha z Backup power cost factor, P, required for ballast system t z For the time t the power required for the ballast system is +.>Selling electricity to a main network for the wave energy power generation platform at the moment t; p (P) t v And the power transmitted to the main network through the submarine cable at the moment t.
5. The method for regulating and controlling a wave energy power generation platform according to claim 3, wherein the constraint condition relation specifically comprises: the method comprises the following steps of upper and lower limit constraint of output power of a wave energy generator set, upper and lower limit constraint of output power of photovoltaic power generation, upper and lower limit constraint of output power of fossil fuel power generation, climbing constraint of output power of fossil fuel power generation, storage battery charge and discharge power constraint, storage battery storage capacity constraint, upper and lower limit constraint of power of sea water desalination equipment, upper and lower limit constraint of fresh water storage capacity, upper and lower limit constraint of power of ballast system equipment standby power, upper and lower limit constraint of capacity of ballast system equipment standby power and total system power balance constraint.
6. The utility model provides a wave energy power generation platform regulation and control device which characterized in that includes:
the environment data acquisition unit is used for acquiring offshore environment data;
the energy optimization model is used for adjusting and optimizing the wave energy power generation platform according to an optimization objective function which minimizes the system running cost, minimizes carbon emission and maximizes clean energy consumption;
the constraint condition determining unit is used for determining constraint condition relation of the energy optimization model according to the equipment parameters of each piece of electric equipment;
and the regulation and control scheme determining unit is used for solving the energy optimization model according to the energy optimization model and the constraint condition relation, and determining the regulation and control optimization scheme of the wave energy power generation platform according to a solving result.
7. The wave energy power generation platform regulation and control device of claim 6, wherein the marine environmental data specifically comprises: illumination irradiance, ambient temperature, wind speed, wave period, wave height, and sea water density.
8. The wave energy power generation platform modulation device of claim 6, wherein the power plant comprises: wave energy power generation equipment, photovoltaic power generation equipment, fossil fuel power generation equipment, energy storage equipment, sea water desalination equipment, ballast system equipment, on-board electrical load equipment and an external power grid.
9. The wave energy power generation platform regulation and control device according to claim 8, wherein the optimization objective function of the energy optimization model is specifically:
min C＝C w +C p +C cp +C d +C sd +C cd +C b +C s +C z -C v
wherein C is w C, generating running cost for wave energy p C is the operation cost of photovoltaic power generation cp To reject penalty cost, C d For the running cost of fossil fuel power plant, C sd C is the start-stop cost of fossil fuel power generation equipment cd Punishment cost for carbon emission, C b C is the charge and discharge cost of the storage battery s C is the running cost of the sea water desalination system z Backup electric energy cost for ballast system equipment, C v For the electric energy benefit transmitted to the main network through the submarine cable, L is the total number of wave energy generators, T is the total regulation period,maintaining a cost factor for the operation of the ith generator, < >>The output power of the ith generator at the moment t, delta t is the regulation time scale, and the +.>Investment cost coefficient for ith wave energy generator, < ->Rated power T of ith wave energy generator i w The service cycle time of the ith wave energy generator is the total photovoltaic power generation number E, and the service cycle time is +.>Maintaining a cost factor for the ith group of photovoltaic operations,/->For the ith group of photovoltaic power generation output power at time t, < >>For group i photovoltaic investment cost coefficient, < ->Rated power for group i photovoltaic, T i p For group i photovoltaic service cycle time, M is the total number of fossil fuel power plants, +.>For the active power output of the ith fossil fuel power plant at time t, +>λ i d The fuel cost coefficients of the ith fossil fuel power plant,management cost coefficient, installation cost per unit capacity, capital recovery coefficient, respectively for ith fossil fuel power plant operation>T i d 、/>Maximum output power, annual operating hours and unit capacity of the ith fossil fuel power plant,/-respectively>For the unit start-stop cost coefficient of fossil fuel power plant, < >>For the start-stop state sign delta of the ith fossil fuel power plant at the moment t p For the carbon dioxide emission cost factor,/->For the output power of the ith fossil fuel power plant at time t, N is the total number of storage batteries,/->The power of the storage battery and the power of the discharge of the ith group of storage batteries at the t moment are respectively>The operation cost, the electric power and the capacity investment cost coefficient of the storage battery of the ith group are respectively +.>T i b 、/>Respectively, rated power of the i th group of storage battery, annual operation hours, maximum capacity of the storage battery, alpha s Is the running cost coefficient, P of the sea water desalination equipment t s Is the running power of the sea water desalination equipment at the moment t, alpha z Backup power cost factor, P, required for ballast system t z For the time t the power required for the ballast system is +.>Selling electricity to a main network for the wave energy power generation platform at the moment t; p (P) t v And the power transmitted to the main network through the submarine cable at the moment t.
10. The wave energy power generation platform regulation and control device according to claim 8, wherein the constraint condition relation specifically comprises: the method comprises the following steps of upper and lower limit constraint of output power of a wave energy generator set, upper and lower limit constraint of output power of photovoltaic power generation, upper and lower limit constraint of output power of fossil fuel power generation, climbing constraint of output power of fossil fuel power generation, storage battery charge and discharge power constraint, storage battery storage capacity constraint, upper and lower limit constraint of power of sea water desalination equipment, upper and lower limit constraint of fresh water storage capacity, upper and lower limit constraint of power of ballast system equipment standby power, upper and lower limit constraint of capacity of ballast system equipment standby power and total system power balance constraint.
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