Photovoltaic operation and maintenance management method and system

Abstract

A photovoltaic operation and maintenance management method and system. The method comprises the steps of: collecting operation data of a photovoltaic power station; on the basis of constraint conditions of the photovoltaic power station, and by taking ensuring the system stability in extreme weather as an objective function, constructing a photovoltaic power station control model, performing optimization solving on the photovoltaic power station control model by means of a solver, and after testing is performed, outputting an optimized photovoltaic power station control model; and inputting real-time operation data of the photovoltaic power station and real-time weather data into the optimized photovoltaic power station control model for calculation, and acquiring an optimal control strategy for the photovoltaic power station.

Description

Photovoltaic operation and maintenance management method and system Technical Field

[0001] The present invention relates to the technical field of photovoltaic power stations, and in particular to a photovoltaic operation and maintenance management method and system. Background Art

[0002] The challenges facing power systems in withstanding extreme thunderstorms have garnered increasing attention worldwide. Currently, existing control methods for photovoltaic power plants in extreme weather conditions primarily focus on maximizing profits. However, under extreme weather conditions, photovoltaic power plants are susceptible to increased stress and losses. This singular focus on profit maximization not only neglects the health and lifespan of individual plant equipment, leading to equipment damage and premature retirement, increasing repair and replacement costs, but also potentially exposing the plant to safety incidents and losses. To address these issues, we have designed a photovoltaic operation and maintenance management method and system. Technical issues

[0003] The purpose of the present invention is to provide a photovoltaic operation and maintenance management method and system, which, by setting a photovoltaic power station control model with the goal of ensuring system stability under extreme weather conditions, not only enables the photovoltaic power station to operate more efficiently under extreme weather conditions and reduce energy waste and emissions; but also improves the stability and benefits of the photovoltaic power station and reduces losses and maintenance costs. Technical Solutions

[0004] The embodiments of the present invention are achieved through the following technical solutions:

[0005] A photovoltaic operation and maintenance management method, the method comprising the following steps:

[0006] Collect operating data of photovoltaic power plants;

[0007] Based on the constraints of the photovoltaic power station and ensuring system stability in extreme weather conditions as the objective function, a photovoltaic power station control model is constructed and optimized using a solver. After testing, the optimized photovoltaic power station control model is output;

[0008] Input real-time photovoltaic power station operation data and weather data into the optimized photovoltaic power station control model for calculation to obtain the optimal control strategy of the photovoltaic power station.

[0009] Optionally, the operating data of the photovoltaic power station includes: solar irradiance data, power station component performance data, historical extreme weather event data, and electricity market price data.

[0010] Optionally, after collecting the operating data of the photovoltaic power station, the method further includes a data preprocessing step for cleaning and standardizing the operating data of the photovoltaic power station.

[0011] Optionally, the constraints of the photovoltaic power station include: power balance constraint, equipment operation restriction constraint, and energy storage equipment capacity restriction constraint; wherein the calculation formula of the power balance constraint is:

[0012]

[0013] in, For The power generation at the time, For The discharge amount of the energy storage system at the moment, For The load demand at any moment, For The energy storage system charge at the moment, is the total number of time periods;

[0014] The equipment operation restrictions are as follows:

[0015]

[0016] in, is the maximum power generation capacity of the photovoltaic power station, is the maximum charging capacity of the energy storage system, is the maximum discharge capacity of the energy storage system;

[0017] The capacity limit of energy storage equipment is:

[0018]

[0019] in, For The stored energy in the energy storage system at the moment, 、 are the minimum and maximum capacities of the energy storage system respectively.

[0020] Optionally, the objective function is to ensure system stability in extreme weather conditions, and the calculation formula is:

[0021]

[0022] in, is the total number of time periods, For system reliability, For operating costs, Cost of failure or loss due to system instability, 、 、 are weight coefficients, which are used to balance the relative importance of each factor in the objective function.

[0023] Optionally, the photovoltaic power station control model is optimized and solved by a solver, and the solver specifically adopts a CPLEX solver or a Gurobi solver.

[0024] A photovoltaic operation and maintenance management system, comprising:

[0025] Collection unit, collecting operating data of photovoltaic power station;

[0026] The construction unit constructs a photovoltaic power station control model based on the constraints of the photovoltaic power station and ensuring system stability under extreme weather conditions as the objective function. The photovoltaic power station control model is optimized and solved through the solver. After testing, the optimized photovoltaic power station control model is output;

[0027] The execution unit inputs real-time PV power station operation data and weather data into the optimized PV power station control model for calculation to obtain the optimal control strategy of the PV power station. Beneficial effects

[0028] The technical solutions of the embodiments of the present invention have at least the following advantages and beneficial effects:

[0029] The embodiment of the present invention sets a photovoltaic power station control model with the goal of ensuring system stability under extreme weather conditions. This not only enables the photovoltaic power station to operate more efficiently under extreme weather conditions, reducing energy waste and emissions; it also improves the stability and profitability of the photovoltaic power station, reducing losses and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] FIG1 is a flow chart of a photovoltaic operation and maintenance management method provided by an embodiment of the present invention. Modes for Carrying Out the Invention

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0032] As shown in FIG1 , the present invention provides one embodiment: a photovoltaic operation and maintenance management method, the method comprising the following steps:

[0033] Collect operating data of photovoltaic power plants;

[0034] Based on the constraints of the photovoltaic power station and ensuring system stability in extreme weather conditions as the objective function, a photovoltaic power station control model is constructed and optimized using a solver. After testing, the optimized photovoltaic power station control model is output;

[0035] Input real-time photovoltaic power station operation data and weather data into the optimized photovoltaic power station control model for calculation to obtain the optimal control strategy of the photovoltaic power station.

[0036] In this embodiment, sensors and monitoring equipment are used to collect real-time operating data from photovoltaic power plants. Based on the constraints and objective functions of the photovoltaic power plants, a mathematical model is established to describe the operating characteristics and control requirements of the photovoltaic power plants. A solver is then used to optimize and solve the constructed photovoltaic power plant control model to obtain the optimal control strategy. Real-time photovoltaic power plant operating data and weather data are input into the optimized control model to calculate the optimal photovoltaic power plant control strategy. This embodiment not only enables real-time monitoring and control of photovoltaic power plants, improving operational efficiency and stability, but also enables more efficient operation of photovoltaic power plants in extreme weather conditions, reducing energy waste and emissions.

[0037] Specifically, the operating data of the photovoltaic power station includes: solar irradiance data, power station component performance data, historical extreme weather event data, and electricity market price data.

[0038] More specifically, after collecting the operating data of the photovoltaic power station, the method further includes a data preprocessing step for cleaning and standardizing the operating data of the photovoltaic power station.

[0039] In this embodiment, the constraints of the photovoltaic power station include: power balance constraint, equipment operation restriction constraint, and energy storage equipment capacity restriction constraint; wherein the calculation formula of the power balance constraint is:

[0040]

[0041] in, For The power generation at the time, For The discharge amount of the energy storage system at the moment, For The load demand at any moment, For The energy storage system charge at the moment, is the total number of time periods;

[0042] The equipment operation restrictions are as follows:

[0043]

[0044] in, is the maximum power generation capacity of the photovoltaic power station, is the maximum charging capacity of the energy storage system, is the maximum discharge capacity of the energy storage system;

[0045] The capacity limit of energy storage equipment is:

[0046]

[0047] in, For The stored energy in the energy storage system at the moment, 、 are the minimum and maximum capacities of the energy storage system respectively.

[0048] Furthermore, the objective function is to ensure system stability in extreme weather conditions, and its calculation formula is:

[0049]

[0050] in, is the total number of time periods, For system reliability, For operating costs, Cost of failure or loss due to system instability, 、 、 are weight coefficients, which are used to balance the relative importance of each factor in the objective function.

[0051] More specifically, the photovoltaic power station control model is optimized and solved by a solver, and the solver specifically adopts a CPLEX solver or a Gurobi solver.

[0052] The present invention also provides another embodiment: a photovoltaic operation and maintenance management system, comprising:

[0053] Collection unit, collecting operating data of photovoltaic power station;

[0054] The construction unit constructs a photovoltaic power station control model based on the constraints of the photovoltaic power station and ensuring system stability under extreme weather conditions as the objective function. The photovoltaic power station control model is optimized and solved through the solver. After testing, the optimized photovoltaic power station control model is output;

[0055] The execution unit inputs real-time PV power station operation data and weather data into the optimized PV power station control model for calculation to obtain the optimal control strategy of the PV power station.

[0056] The photovoltaic operation and maintenance management system provided in this embodiment and the photovoltaic operation and maintenance management method provided in the above embodiment are based on the same inventive concept. For more specific working principles of each module in the embodiment of the present invention, please refer to the above embodiment and will not be repeated in the embodiment of the present invention.

[0057] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A photovoltaic operation and maintenance management method, characterized in that The steps of the method include: Collecting the operation data of the photovoltaic power station; Based on the constraint conditions of the photovoltaic power station and ensuring system stability under extreme weather as the objective function, constructing a control model of the photovoltaic power station, and optimizing and solving the control model of the photovoltaic power station through a solver. After testing, outputting the optimized control model of the photovoltaic power station; Inputting the real-time operation data and weather data of the photovoltaic power station into the optimized control model of the photovoltaic power station for calculation to obtain the optimal control strategy of the photovoltaic power station.

2. The photovoltaic operation and maintenance management method according to claim 1, characterized in that The operation data of the photovoltaic power station includes: solar irradiance data, power station component performance data, historical extreme weather event data, and electricity market price data.

3. A photovoltaic operation and maintenance management method according to claim 2, characterized in that, After collecting the operation data of the photovoltaic power station, it further includes a data preprocessing step for cleaning and standardizing the operation data of the photovoltaic power station.

4. The photovoltaic operation and maintenance management method according to claim 1, characterized in that, The constraint conditions of the photovoltaic power station include: power balance constraint, equipment operation limit constraint, energy storage equipment capacity limit constraint; among them, the calculation formula of the power balance constraint is: Among them, To be in Electricity generation at a moment To be in The discharge amount of the energy storage system at a moment To be in The load demand at a moment, In order to The charging amount of the energy storage system at a moment The total number of time periods; The equipment operation limit constraint is: Among them, is the maximum power generation capacity of the PV power station, is the maximum charging capacity of the energy storage system, The maximum discharge capacity of the energy storage system; The energy storage equipment capacity limit constraint is: Among them, In order to Stored energy in the energy storage system at a moment 、 The minimum and maximum capacities of the energy storage system respectively.

5. A photovoltaic operation and maintenance management method according to claim 4, characterized in that, Taking ensuring system stability under extreme weather as the objective function, its calculation formula is: Among them, is the total number of time periods, For the reliability of the system, For operating costs, Costs of failures or losses due to system instability 、 、 The weight coefficients respectively, which are used to balance the relative importance of each factor in the objective function.

6. The photovoltaic operation and maintenance management method according to claim 1, characterized in that When optimizing and solving the control model of the photovoltaic power station through a solver, the solver specifically uses a CPLEX solver or a Gurobi solver.

7. A photovoltaic operation and maintenance management system, characterized in that, It includes: A collection unit for collecting the operation data of the photovoltaic power station; A construction unit for constructing a control model of the photovoltaic power station based on the constraint conditions of the photovoltaic power station and ensuring system stability under extreme weather as the objective function, and optimizing and solving the control model of the photovoltaic power station through a solver. After testing, outputting the optimized control model of the photovoltaic power station; An execution unit for inputting the real-time operation data and weather data of the photovoltaic power station into the optimized control model of the photovoltaic power station for calculation to obtain the optimal control strategy of the photovoltaic power station.

Images