A pumped storage-water-wind-light collaborative operation control method and related device

Abstract

This application discloses a pumped-storage-hydro-wind-solar coordinated operation control method and related apparatus, relating to the field of pumped-storage-hydro-wind-solar coordinated operation technology. The method includes: firstly, establishing a pumped-storage-hydro-wind-solar coordinated operation control model, which includes an objective function and constraints. The objective function aims to minimize the total water consumption for power generation in the reservoir and maximize the expected maximum absorbable power. The constraints include balance constraints for the pumped-storage power station, the hydropower station, and the wind and solar power stations. Then, the pumped-storage-hydro-wind-solar coordinated operation control model is optimized and solved to obtain a pumped-storage-hydro-wind-solar coordinated operation control scheme. This application can effectively control the pumped-storage-hydro-wind-solar coordinated operation and improve its performance.

Description

Technical Field

[0001] This application relates to the field of pumped storage-water-wind-solar coordinated operation technology, and in particular to a control method and related device for pumped storage-water-wind-solar coordinated operation. Background Technology

[0002] Against the backdrop of global energy transition and climate change response, the development and utilization of renewable energy has become a societal consensus. Wind and solar energy, due to their clean and renewable characteristics, are considered crucial components of the future energy system. However, these renewable energy sources suffer from randomness, intermittency, and volatility, posing challenges to the safe and stable operation of the power grid. To address this issue, the pumped storage-water-wind-solar synergistic operation model, which integrates pumped storage power stations, hydropower stations, wind power stations, and photovoltaic power stations, has emerged as a key pathway to promote high-quality development of the energy system.

[0003] Pumped-storage hydroelectric power stations, as important energy storage facilities, play multiple roles in the power system, including peak shaving, load regulation, and improving grid stability. When wind and solar power generation is insufficient, they release stored electricity to supplement grid demand; when wind and solar power generation is excessive, they convert the excess electricity into hydroelectric power for later use. This energy storage characteristic makes pumped-storage hydroelectric power stations a bridge connecting renewable energy sources and the power grid. Hydropower stations, as another important renewable energy source, are characterized by strong regulation capabilities and fast response times. Especially power stations with large annual regulating reservoirs can effectively smooth out fluctuations in wind and solar power generation through optimized scheduling and rapid, flexible adjustment of hydroelectric units, transforming them into smooth, stable, and high-quality power sources. This fundamental regulatory role of hydropower is crucial for improving the security and stability of the power grid. Wind and solar power generation, as major renewable energy generation methods, have natural complementarity. Wind power has stronger generation capacity at night and during periods of high wind speed, while solar power has stronger generation capacity during the day and during periods of abundant sunshine. Through reasonable layout and scheduling, wind and solar power generation can complement each other in time, improving the overall utilization rate of renewable energy.

[0004] Against the backdrop of energy transition and power system reform, the pumped storage-hydro-wind-solar synergistic operation mode has gradually become a research hotspot. This mode integrates the advantages of different energy sources to achieve optimal resource allocation and efficient utilization. Specifically, pumped storage power stations, as energy storage facilities, can smooth out fluctuations in wind and solar power generation; hydropower stations, as regulating power sources, can further enhance the stability and security of the power grid; and wind and solar power, as major renewable energy generation methods, provide clean and sustainable electricity to the grid. With technological advancements and cost reductions, the economic benefits of the pumped storage-hydro-wind-solar synergistic operation mode are becoming increasingly apparent. Through optimized scheduling and scientific management, complementary advantages and synergistic development among different energy sources can be achieved, improving the operational efficiency and economic benefits of the entire energy system.

[0005] In summary, the pumped-storage-hydro-wind-solar synergistic operation mode is an important solution proposed against the backdrop of global energy transition and power system reform. By integrating the advantages of different energy sources, it achieves optimized resource allocation and efficient utilization, providing strong support for building a clean, low-carbon, safe, and efficient energy system. However, currently, there is a lack of effective methods for controlling the pumped-storage-hydro-wind-solar synergistic operation. Summary of the Invention

[0006] The purpose of this application is to provide a pumped storage-water-wind-solar coordinated operation control method and related device, which can effectively control the pumped storage-water-wind-solar coordinated operation and improve the performance of pumped storage-water-wind-solar coordinated operation.

[0007] To achieve the above objectives, this application provides the following solution:

[0008] In a first aspect, this application provides a pumped-storage-water-wind-solar coordinated operation control method, the pumped-storage-water-wind-solar coordinated operation control method comprising:

[0009] A pumped storage-hydro-wind-solar coordinated operation control model is established. The pumped storage-hydro-wind-solar coordinated operation control model includes an objective function and constraints. The objective function aims to minimize the total power generation water consumption of the reservoir and maximize the expected maximum power consumption. The constraints include balance constraints for pumped storage power stations, hydropower stations, and wind and solar power stations.

[0010] The pumped storage-water-wind-solar coordinated operation control model is optimized and solved to obtain the pumped storage-water-wind-solar coordinated operation control scheme. The pumped storage-water-wind-solar coordinated operation control scheme includes the mode and output of the pumped storage power station, the output of the hydropower station, the output of the wind power station and the output of the photovoltaic power station. The mode includes the power generation mode and the pumping mode.

[0011] Secondly, this application provides a pumped-storage-water-wind-solar coordinated operation control device, which includes:

[0012] The model building module is used to establish a pumped storage-water-wind-solar coordinated operation control model. The pumped storage-water-wind-solar coordinated operation control model includes an objective function and constraints. The objective function aims to minimize the total power generation water consumption of the reservoir and maximize the expected maximum amount of electricity that can be absorbed. The constraints include balance constraints for pumped storage power stations, balance constraints for hydropower stations, and balance constraints for wind power stations and photovoltaic power stations.

[0013] The model solving module is used to optimize and solve the pumped storage-water-wind-solar coordinated operation control model to obtain the pumped storage-water-wind-solar coordinated operation control scheme. The pumped storage-water-wind-solar coordinated operation control scheme includes the mode and output of the pumped storage power station, the output of the hydropower station, the output of the wind power station, and the output of the photovoltaic power station. The mode includes the power generation mode and the pumping mode.

[0014] Thirdly, this application provides a computer device, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the above-described pumped storage-water-wind-solar coordinated operation control method.

[0015] Fourthly, this application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the above-described pumped storage-water-wind-solar coordinated operation control method.

[0016] Fifthly, this application provides a computer program product, including a computer program that, when executed by a processor, implements the above-described pumped storage-water-wind-solar coordinated operation control method.

[0017] According to the specific embodiments provided in this application, the following technical effects are disclosed:

[0018] This application provides a pumped storage-hydro-wind-solar coordinated operation control method and related devices. First, a pumped storage-hydro-wind-solar coordinated operation control model is established, which includes an objective function and constraints. The objective function aims to minimize the total water consumption for power generation in the reservoir and maximize the expected maximum amount of electricity that can be absorbed. The constraints include balance constraints for the pumped storage power station, the hydropower station, and the wind and solar power stations. Then, the pumped storage-hydro-wind-solar coordinated operation control model is optimized and solved to obtain a pumped storage-hydro-wind-solar coordinated operation control scheme. The pumped storage-hydro-wind-solar coordinated operation control scheme includes the mode and output of the pumped storage power station, the output of the hydropower station, the output of the wind power station, and the output of the solar power station. The modes include power generation mode and pumping mode. This application establishes and solves a pumped storage-water-wind-solar coordinated operation control model, which can obtain a pumped storage-water-wind-solar coordinated operation control scheme that minimizes the target value of the total power generation water consumption of the reservoir and maximizes the expected maximum value of the power that can be absorbed. Subsequent operation according to this pumped storage-water-wind-solar coordinated operation control scheme can effectively control the pumped storage-water-wind-solar coordinated operation and improve the performance of pumped storage-water-wind-solar coordinated operation. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is an application environment diagram of a pumped storage-water-wind-solar coordinated operation control method provided in Embodiment 1 of this application.

[0021] Figure 2 This is a flowchart illustrating a pumped storage-water-wind-solar coordinated operation control method provided in Embodiment 1 of this application.

[0022] Figure 3 This is a detailed flowchart illustrating a pumped storage-water-wind-solar coordinated operation control method provided in Embodiment 1 of this application.

[0023] Figure 4 This is a schematic diagram of the functional modules of a pumped storage-water-wind-solar coordinated operation control device provided in Embodiment 2 of this application.

[0024] Figure 5 This is a schematic diagram of the structure of a computer device provided in Embodiment 3 of this application. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] Example 1

[0027] The pumped storage-water-wind-solar coordinated operation control method provided in this application embodiment can be applied to, for example... Figure 1 The application environment shown depicts a scenario where the terminal communicates with the server via a network. The data storage system stores the data the server needs to process. This data storage system can be configured independently, integrated into the server, or located in the cloud or on another server. The terminal can send a pending operation control request (used to request the generation of a pumped storage-hydro-wind-solar coordinated operation control scheme) to the server. After receiving the pending operation control request, the server establishes a pumped storage-hydro-wind-solar coordinated operation control model for the request. The pumped storage-hydro-wind-solar coordinated operation control model includes an objective function and constraints. The objective function aims to minimize the total water consumption for power generation in the reservoir and maximize the expected maximum amount of electricity that can be absorbed. The constraints include balance constraints for the pumped storage power station, the hydropower station, and the wind and solar power stations. The pumped storage-hydro-wind-solar coordinated operation control model is optimized and solved to obtain the pumped storage-hydro-wind-solar coordinated operation control scheme. The pumped storage-hydro-wind-solar coordinated operation control scheme includes the mode and output of the pumped storage power station, the output of the hydropower station, the output of the wind power station, and the output of the solar power station. The modes include power generation mode and pumping mode. The server can feed back the pumped storage-water-wind-solar coordinated operation control scheme obtained in response to the operation control request to the terminal.

[0028] In addition, in some embodiments, the pumped storage-water-wind-solar coordinated operation control method can also be implemented by a server or a terminal. For example, the terminal can directly process the operation control request to be processed, or the server can obtain the operation control request to be processed from the data storage system and process it.

[0029] The terminals can be, but are not limited to, various desktop computers, laptops, smartphones, tablets, IoT devices, and portable wearable devices. IoT devices can include smart speakers, smart TVs, smart air conditioners, and smart in-vehicle devices, while portable wearable devices can include smartwatches, smart bracelets, and head-mounted devices. Servers can be implemented using independent servers, server clusters composed of multiple servers, or cloud servers.

[0030] like Figure 2 As shown, a method for coordinated operation and control of pumped storage-water-wind-solar energy is provided. This method is executed by computer equipment, specifically by a terminal or server alone, or by both a terminal and a server. In this embodiment, the method is applied to... Figure 1 Taking the server in the example, the following steps are included:

[0031] Step S1: Establish a pumped storage-water-wind-solar coordinated operation control model; the pumped storage-water-wind-solar coordinated operation control model includes an objective function and constraints; the objective function aims to minimize the total power generation water consumption of the reservoir and maximize the expected maximum power consumption; the constraints include balance constraints for pumped storage power stations, balance constraints for hydropower stations, and balance constraints for wind power stations and photovoltaic power stations.

[0032] Step S2: Optimize and solve the pumped storage-water-wind-solar coordinated operation control model to obtain the pumped storage-water-wind-solar coordinated operation control scheme; the pumped storage-water-wind-solar coordinated operation control scheme includes the mode and output of the pumped storage power station, the output of the hydropower station, the output of the wind power station and the output of the photovoltaic power station, and the mode includes the power generation mode and the pumping mode.

[0033] By implementing steps S1 to S2 above, this embodiment establishes and solves the pumped storage-water-wind-solar coordinated operation control model, which can obtain a pumped storage-water-wind-solar coordinated operation control scheme that minimizes the target value of the total power generation water consumption of the reservoir and maximizes the expected maximum value of the power that can be absorbed. Subsequent operation according to this pumped storage-water-wind-solar coordinated operation control scheme can significantly improve the performance of pumped storage-water-wind-solar coordinated operation.

[0034] This embodiment establishes a pumped storage-water-wind-solar coordinated operation control model by considering the impact of the coordinated operation of pumped storage, water, wind and solar power on the target value of total power generation water consumption and the expected maximum value of the power that can be absorbed by the reservoir after complementarity. The pumped storage-water-wind-solar coordinated operation control model includes an objective function and constraints. The objective function aims to minimize the target value of total power generation water consumption of the reservoir and maximize the expected maximum value of the power that can be absorbed. The constraints include the balance constraints of the pumped storage power station, the balance constraints of the hydropower station, and the balance constraints of the wind power station and the photovoltaic power station.

[0035] This embodiment first determines the objective function for the problem of the impact of pumped storage-water-wind-solar synergistic operation on the target value of the total power generation water consumption and the expected maximum value of the absorbed electricity of the reservoir after complementarity. The objective function is:

[0036]

[0037] In the above formula, W out The target value for total power generation water consumption of reservoirs, specifically the target value for total power generation water consumption of cascade reservoirs and pumped storage power station reservoirs. Cascade reservoirs refer to a series of reservoirs built in a stepped manner from upstream to downstream. Each reservoir corresponds to a hydropower station. A hydropower station may correspond to only one reservoir or multiple reservoirs at the same time. T is the total number of time periods included in the scheduling cycle; N is the total number of reservoirs. The reservoirs include the first reservoir and the second reservoir. The first reservoir is the upper and lower reservoirs of the pumped storage power station, and the second reservoir is the reservoir of the hydropower station. Let be the outflow from the i-th reservoir in the t-th time period; Δt represents the time granularity, specifically the duration of a single time period, which can be characterized by the number of hours included in a single time period, and the duration of each time period is consistent; F is the expected maximum value of the electricity that can be absorbed. S represents the total number of power output combination scenarios, J represents the total number of photovoltaic power plants, and S represents the total number of power output combination scenarios. j Let S be the number of power output combination scenarios for the j-th photovoltaic power station, K be the total number of wind power stations, and S be the number of power output combination scenarios for the j-th photovoltaic power station. k This represents the number of power output combination scenarios for the k-th wind power station; Let r be the probability of the s-th power output combination scenario occurring. s,j and p(r) s,j Let r represent the scenario to which the j-th photovoltaic power station belongs and the probability of occurrence of that scenario under the s-th power output combination scenario, satisfying 1≤r s,j ≤S j r s,k and p(r) s,kLet r be the scenario to which the k-th wind power station belongs under the s-th power output combination scenario and the probability of that scenario occurring, satisfying 1≤r s,k ≤S k ; For the j-th photovoltaic power station in the t-th time period and scenario r s,j The output power; I is the total number of hydropower stations; Let i be the power output of the i-th hydropower station in the t-th time period; For the k-th wind power station in the t-th time period and scenario r s,k The output force; G is the total number of constraint sections; Let G be the amount of power wasted at the g-th constrained section in the t-th time period and the s-th power output combination scenario.

[0038] This embodiment further determines the constraints on the impact of pumped storage-hydro-wind-solar coordinated operation on the target value of total power generation water consumption and the expected maximum value of power consumption of the reservoir after complementarity. In pumped storage-hydro-wind-solar coordinated operation, wind power stations and photovoltaic power stations can participate in the scheduling as uncontrollable power stations in the power station group. The constraints of pumped storage power stations and hydropower stations may include water balance and reservoir capacity constraints, output constraints, pumped storage balance constraints and downstream flow constraints. At this time, the constraints include the balance constraints of pumped storage power stations, the balance constraints of hydropower stations, and the balance constraints of wind power stations and photovoltaic power stations.

[0039] The equilibrium constraints for pumped storage power stations are:

[0040]

[0041]

[0042]

[0043] V i min ≤V i t ≤V i max (6)

[0044] In the above formula, This represents the capacity of the upper reservoir of the pumped storage power station at time t+1. Δt represents the capacity of the upper reservoir of the pumped storage power station during time period t; Δt is the duration of a single time period. Let t be the pumping flow rate of the pumped storage power station in time period t; Let be the power generation flow of the pumped storage power station in time period t; This represents the capacity of the lower reservoir of the pumped storage power station at time t+1. Let t be the capacity of the lower reservoir of the pumped storage power station during time period t. Let t be the inflow rate into the lower reservoir of the pumped storage power station during time period t. Let t be the outflow from the lower reservoir of the pumped storage power station during time period t. Let represent the storage capacity of the i-th first reservoir in the t+1 time period. The first reservoir is the upper and lower reservoirs of the pumped storage power station. Let be the storage capacity of the i-th first reservoir in time period t; Let be the inflow rate of the i-th first reservoir in time period t; Let be the outflow from the i-th reservoir in time period t; This represents the lower limit of the capacity of the i-th first reservoir; This represents the upper limit of the capacity of the i-th first reservoir.

[0045] The balance constraints of the hydropower station are:

[0046] V h，i(t+1) =V h，it +(R h，it -Outq h，it )△t (7)

[0047] Outq h，it =Q h，it +S h，it (8)

[0048]

[0049]

[0050]

[0051]

[0052] In the above formula, V h，i(t+1) Let m be the water storage volume of the i-th second reservoir in time period t+1, that is, the water storage volume at the end of time period t. 3 The second reservoir is the reservoir of the hydroelectric power station; V h，it Let m be the water storage volume of the i-th second reservoir at time t, that is, the water storage volume at the beginning of time t. 3 ;R h，it Let m be the inflow rate of the i-th second reservoir in time period t. 3 / s;Outq h，it Let m be the discharge flow of the i-th second reservoir in time period t. 3 / s; Δt is the duration of a single time interval, in seconds; Q h，it Let m be the hydropower generation flow of the i-th second reservoir in time period t. 3 / s;S h，it Let m be the discharge flow of the i-th second reservoir in time period t. 3 / s; For the (i-1)th second reservoir at time t-ΔT i-1 The outflow rate during the time period, m 3 / s, the (i-1)th second reservoir is located upstream of the ith second reservoir, and water flows from the (i-1)th second reservoir to the ith second reservoir, ΔT i-1 I represents the number of time periods corresponding to the water flow stagnation time from the (i-1)th second reservoir to the ith second reservoir; h，it Let m be the average inflow from the (i-1)th second reservoir to the ith second reservoir during time period t. 3 / s; Let m be the minimum allowable water storage capacity of the i-th second reservoir during time period t. 3 ; Let m be the maximum allowable water storage capacity of the i-th second reservoir during time period t. 3 ; Let m be the minimum allowable discharge flow of the i-th second reservoir in time period t. 3 / s; Let m be the maximum allowable discharge flow of the i-th second reservoir in time period t. 3 / s; Let N be the minimum allowable output of the i-th hydropower station in time period t, in kW; j，it Let be the power output of the i-th hydropower station in time period t, in kW; Let be the maximum allowable output of the i-th hydropower station in time period t, in kW.

[0053] The balance constraints for wind power plants and photovoltaic power plants are:

[0054]

[0055] In equation (13), P it P represents the output of the i-th pumped storage power station in time period t, i.e., the day-ahead predicted output. ht P represents the output of the h-th hydropower station during time period t. st P represents the output of the s-th photovoltaic power station during time period t; wt Let w be the output of the w-th wind power station during time period t; This represents the power load value connected to the b-th bus in time period t, i.e., the power load value connected to the b-th bus in time period t.

[0056] After establishing the corresponding constraints and objective function, this embodiment can further solve the above problem, that is, optimize the pumped storage-water-wind-solar coordinated operation control model to obtain the pumped storage-water-wind-solar coordinated operation control scheme. The pumped storage-water-wind-solar coordinated operation control scheme includes the mode and output of the pumped storage power station, the output of the hydropower station, the output of the wind power station and the output of the photovoltaic power station. The mode includes the power generation mode and the pumping mode.

[0057] Specifically, this embodiment can use the Progressive Optimization Algorithm (POA) to optimize and solve the above problem, quantify the impact of the pumped storage-water-wind-solar coordinated operation mode on the target value of total power generation water consumption and the expected maximum value of the power that can be absorbed by the reservoir, that is, to predict the impact of the pumped storage-water-wind-solar coordinated operation mode on the target value of total power generation water consumption and the expected maximum value of the power that can be absorbed by the reservoir, and at the same time obtain the pumped storage-water-wind-solar coordinated operation control scheme, and further evaluate the load-side electricity demand and safety constraints.

[0058] At this point, the pumped storage-water-wind-solar coordinated operation control model is optimized and solved to obtain the pumped storage-water-wind-solar coordinated operation control scheme. Specifically, the successive optimization algorithm is used to optimize and solve the pumped storage-water-wind-solar coordinated operation control model to obtain the pumped storage-water-wind-solar coordinated operation control scheme.

[0059] like Figure 3 As shown, before establishing and solving the pumped storage-water-wind-solar coordinated operation control model, this embodiment also includes the following steps:

[0060] (1) Obtain load data from the power grid (i.e., the power demand undertaken by the power grid at a certain moment or period), equipment information of each hydropower station, and parameters such as the daily inflow process of each reservoir (including the upper and lower reservoirs of pumped storage power stations and the reservoirs of hydropower stations). Among them, the equipment information of each hydropower station includes the number of reservoirs, regulation performance, normal water level, dead water level, installed capacity and regulation capacity. Regulation performance includes daily regulation, weekly regulation, monthly regulation, quarterly regulation, annual regulation and multi-year regulation. Normal water level refers to the highest water level allowed under normal operation. Dead water level refers to the lowest water level allowed under normal operation. Installed capacity refers to the sum of the rated capacity of all generator units installed in the hydropower station. Regulation capacity refers to the reservoir volume between the normal water level and the dead water level.

[0061] (2) Determine the energy conversion characteristics of pumped storage power stations, hydropower stations, wind power stations and photovoltaic power stations. Wind power stations and photovoltaic power stations can be used as uncontrollable power plants in the power station group to participate in the dispatch. Hydropower stations have only one operating condition. Pumped storage power stations have power generation and pumping conditions. Their specific energy conversion characteristics are as follows.

[0062] The energy conversion characteristics of a pumped storage power station in power generation mode are as follows:

[0063]

[0064] In equation (14), Let be the power generation of the s-th pumped storage unit in the t-th time period. The pumped storage power station includes multiple pumped storage units. Let t be the average head of the pumped storage unit during time period t. Head refers to the vertical height from the water level of the upstream reservoir to the turbine inlet. Let be the power generation flow of the s-th pumped storage unit in time period t; Let be the power generation efficiency of the s-th pumped storage unit.

[0065] The energy conversion characteristics of a pumped storage power station in pumping mode are as follows:

[0066]

[0067] In equation (15), Let be the pumping power consumption of the s-th pumped storage unit in the t-th time period; Let t be the average pumping head of the pumped storage unit in time period t, where head is the vertical lifting height of the pump. Let be the pumping flow rate of the s-th pumped storage unit in time period t; Let be the operating efficiency of the s-th pumped storage unit in pumped mode.

[0068] (3) Set up a pumped storage-water-wind-solar coordinated operation mode and determine the load process of the pumped storage-water-wind-solar coordinated operation mode. For pumped storage power stations, under the premise of meeting the water balance constraint of the upper reservoir of the pumped storage power station, calculate the duration of pumping and power generation of the pumped storage power station, and set the power generation pumping mode as "one pumping and one power generation" or "one pumping and two power generation". At this time, the pumped storage power station adopts the working mode of alternating between power generation mode and pumping mode. The alternating operation of power generation mode and pumping mode is one power generation mode and one pumping mode, that is, one power generation mode, one pumping mode, one power generation mode, one pumping mode is executed in a cycle, or the alternating operation of power generation mode and pumping mode is one power generation mode and two pumping modes, that is, one power generation mode, one pumping mode, one pumping mode, one power generation mode, one pumping mode, one pumping mode is executed in a cycle. The load of a hydropower station + the load of a pumped storage power station + the load of a wind power station + the load of a photovoltaic power station = the load of the power system. That is, when pumped storage, water, wind and solar power are operated in a coordinated manner, the sum of the loads of the pumped storage power station, the hydropower station, the wind power station and the photovoltaic power station equals the load of the power system.

[0069] This embodiment provides a method for supporting grid regulation through the coordinated operation of pumped storage, hydropower, wind power, and solar power. It considers the impact of this coordinated operation on the target value of total power generation and water consumption and the expected maximum capacity of the reservoir after complementarity. The method involves acquiring parameters such as load data from the grid, equipment information of each hydropower station, and the daily inflow process of each reservoir; determining the energy conversion characteristics of the pumped storage power station, hydropower station, wind power station, and photovoltaic power station; setting the coordinated operation mode of pumped storage, hydropower, wind power, and solar power; determining the load process of the coordinated operation; determining the objective function for the problem of the impact of the coordinated operation on the target value of total power generation and water consumption and the expected maximum capacity of the reservoir after complementarity; determining the constraints for the problem of the impact of the coordinated operation on the target value of total power generation and water consumption and the expected maximum capacity of the reservoir after complementarity; solving the above optimization problem; and evaluating the load-side electricity demand and safety constraints. This embodiment proposes a pumped storage-water-wind-solar coordinated operation model and uses a successive optimization algorithm for optimization solution. Taking into account factors such as load-side electricity demand and safety constraints, it provides a certain reference for the supporting role of pumped storage-water-wind-solar coordinated operation in power grid regulation under different scenarios.

[0070] The purpose of this embodiment is to propose a pumped storage-water-wind-solar coordinated operation mechanism, evaluate the target value of total power generation water consumption and the expected maximum value of power consumption after complementarity, comprehensively consider the load-side power demand and safety constraints, and propose an optimized control strategy for pumped storage-water-wind-solar coordinated operation based on these factors.

[0071] This application also provides an application scenario in which the above-described pumped-storage-water-wind-solar coordinated operation control method is applied. Specifically, the pumped-storage-water-wind-solar coordinated operation control method provided in this embodiment can be applied in a coordinated operation control scenario. The coordinated operation control scenario includes a scheme determination stage and a control stage. The scheme determination stage is used to establish and solve the pumped-storage-water-wind-solar coordinated operation model to obtain the pumped-storage-water-wind-solar coordinated operation scheme. The control stage is used to control the pumped-storage-water-wind-solar coordinated operation based on the pumped-storage-water-wind-solar coordinated operation scheme. The pumped-storage-water-wind-solar coordinated operation control method provided in this embodiment belongs to the scheme determination stage.

[0072] Example 2

[0073] Based on the same inventive concept, this application also provides a pumped-storage-water-wind-solar coordinated operation control device for implementing the above-mentioned pumped-storage-water-wind-solar coordinated operation control method. The solution provided by this device is similar to the solution described in the above method. Therefore, the specific limitations in the embodiments of the pumped-storage-water-wind-solar coordinated operation control device provided below can be found in the limitations of the pumped-storage-water-wind-solar coordinated operation control method described above, and will not be repeated here.

[0074] like Figure 4 As shown, a pumped-storage-water-wind-solar coordinated operation control device is provided, the pumped-storage-water-wind-solar coordinated operation control device comprising:

[0075] The model building module M1 is used to establish a pumped storage-water-wind-solar coordinated operation control model. The pumped storage-water-wind-solar coordinated operation control model includes an objective function and constraints. The objective function aims to minimize the total water consumption for power generation in the reservoir and maximize the expected maximum amount of electricity that can be absorbed. The constraints include balance constraints for pumped storage power stations, balance constraints for hydropower stations, and balance constraints for wind power stations and photovoltaic power stations.

[0076] The model solving module M2 is used to optimize and solve the pumped storage-water-wind-solar coordinated operation control model to obtain the pumped storage-water-wind-solar coordinated operation control scheme. The pumped storage-water-wind-solar coordinated operation control scheme includes the mode and output of the pumped storage power station, the output of the hydropower station, the output of the wind power station, and the output of the photovoltaic power station. The mode includes the power generation mode and the pumping mode.

[0077] Example 3

[0078] In one exemplary embodiment, a computer device is provided, which may be a server or a terminal, and its internal structure diagram may be as follows. Figure 5 As shown, this computer device includes a processor, memory, input / output (I / O) interfaces, and a communication interface. The processor, memory, and I / O interfaces are connected via a system bus, and the communication interface is also connected to the system bus via the I / O interfaces. The processor provides computational and control capabilities. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores the operating system, computer programs, and a database. The internal memory provides the environment for the operating system and computer programs stored in the non-volatile storage media. The database stores data. The I / O interfaces are used for exchanging information between the processor and external devices. The communication interface is used for communication with external terminals via a network connection. When the computer program is executed by the processor, it implements a pumped-storage hydropower-wind-solar coordinated operation control method.

[0079] Those skilled in the art will understand that Figure 5 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0080] In one exemplary embodiment, a computer device is also provided, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the pumped storage-water-wind-solar coordinated operation control method described in Embodiment 1.

[0081] Example 4

[0082] This application provides a computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the pumped storage-water-wind-solar coordinated operation control method described in Embodiment 1.

[0083] Example 5

[0084] This application provides a computer program product, including a computer program that, when executed by a processor, implements the pumped storage-water-wind-solar coordinated operation control method described in Embodiment 1.

[0085] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, data stored, data displayed, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of the relevant data must comply with relevant regulations.

[0086] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0087] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. Furthermore, those skilled in the art will recognize that, based on the ideas of this application, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A method for coordinated operation and control of pumped storage-water-wind-solar energy, characterized in that, The pumped storage-water-wind-solar coordinated operation control method includes: A pumped storage-hydro-wind-solar coordinated operation control model is established. The pumped storage-hydro-wind-solar coordinated operation control model includes an objective function and constraints. The objective function aims to minimize the total power generation water consumption of the reservoir and maximize the expected maximum power consumption. The constraints include balance constraints for pumped storage power stations, hydropower stations, and wind and solar power stations. The pumped storage-hydro-wind-solar coordinated operation control model is optimized and solved to obtain the pumped storage-hydro-wind-solar coordinated operation control scheme. The pumped storage-hydro-wind-solar coordinated operation control scheme includes the mode and output of the pumped storage power station, the output of the hydropower station, the output of the wind power station and the output of the photovoltaic power station. The mode includes the power generation mode and the pumping mode. The objective function is: Among them, W out The target value for total power generation water consumption of the reservoir; T is the total number of time periods included in the scheduling cycle; N is the total number of reservoirs, including the first reservoir and the second reservoir. The first reservoir is the upper and lower reservoirs of the pumped storage power station, and the second reservoir is the reservoir of the hydropower station. Let be the outflow from the i-th reservoir in the t-th time period; Δt be the duration of a single time period; F be the expected maximum amount of electricity that can be absorbed; S be the total number of power output combination scenarios; Prob(s) be the probability of the s-th power output combination scenario occurring; J be the total number of photovoltaic power stations. For the j-th photovoltaic power station in the t-th time period and scenario r s,j The output of the lower part, r s,j Let be the scenario to which the j-th photovoltaic power station belongs under the s-th power output combination scenario; I is the total number of hydropower stations; Let K be the output of the i-th hydropower station in the t-th time period; K is the total number of wind power stations. For the k-th wind power station in the t-th time period and scenario r s,k The output of the lower part, r s,k Let G be the scenario to which the k-th wind power station belongs under the s-th power output combination scenario; G is the total number of constraint sections. Let G be the amount of power wasted at the g-th constrained section in the t-th time period and the s-th power output combination scenario; When pumped storage, hydropower, wind power, and solar power are operated in a coordinated manner, the sum of the loads of the pumped storage power station, the hydropower station, the wind power station, and the photovoltaic power station equals the load of the power system. Pumped storage power stations adopt an alternating operation mode of power generation and pumping mode. The alternating operation of power generation and pumping mode is either a one-time power generation mode followed by a one-time pumping mode, or a one-time power generation mode followed by two pumping modes. The pumped storage-water-wind-solar coordinated operation control model is optimized and solved to obtain the pumped storage-water-wind-solar coordinated operation control scheme. Specifically, the optimization algorithm is used to optimize and solve the pumped storage-water-wind-solar coordinated operation control model to obtain the pumped storage-water-wind-solar coordinated operation control scheme.

2. The pumped storage-water-wind-solar coordinated operation control method according to claim 1, characterized in that, The equilibrium constraints of the pumped storage power station are: In i min ≤V i t ≤V i max ; in, This represents the capacity of the upper reservoir of the pumped storage power station at time t+1. Δt represents the capacity of the upper reservoir of the pumped storage power station during time period t; Δt is the duration of a single time period. Let t be the pumping flow rate of the pumped storage power station in time period t; Let be the power generation flow of the pumped storage power station in time period t; This represents the capacity of the lower reservoir of the pumped storage power station at time t+1. Let t be the capacity of the lower reservoir of the pumped storage power station during time period t. Let t be the inflow rate into the lower reservoir of the pumped storage power station during time period t. Let t be the outflow from the lower reservoir of the pumped storage power station during time period t. Let represent the storage capacity of the i-th first reservoir in the t+1 time period. The first reservoir is the upper and lower reservoirs of the pumped storage power station. Let be the storage capacity of the i-th first reservoir in time period t; Let be the inflow rate of the i-th first reservoir in time period t; Let be the outflow from the i-th reservoir in time period t; This represents the lower limit of the capacity of the i-th first reservoir; This represents the upper limit of the capacity of the i-th first reservoir; The balance constraints of the hydropower station are: V h，i(t+1) =V h，it +(R h，it -Outq h，it )Δt; Outq h，it =Q h，it +S h，it ; Among them, V h，i(t+1) V represents the water storage capacity of the i-th second reservoir during time period t+1, where the second reservoir is the reservoir of the hydroelectric power station; h，it R represents the water storage capacity of the i-th second reservoir during time period t; h，it Let Outq be the inflow rate of the i-th second reservoir in time period t; h，it Let Q be the discharge flow of the i-th second reservoir in time period t; Δt is the duration of a single time period; Q h，it S represents the hydropower generation flow of the i-th second reservoir during time period t; h，it Let be the discharge flow of the i-th second reservoir in time period t; For the (i-1)th second reservoir at time t-ΔT i-1 The discharge flow during the time period, where the (i-1)th second reservoir is located upstream of the ith second reservoir, ΔT i-1 I represents the number of time periods corresponding to the water flow stagnation time from the (i-1)th second reservoir to the ith second reservoir; h，it Let be the average inflow from the (i-1)th second reservoir to the ith second reservoir during time period t; Let be the minimum allowable water storage capacity of the i-th second reservoir during time period t; Let i be the maximum allowable water storage capacity of the i-th second reservoir during time period t; Let be the minimum allowable discharge flow of the i-th second reservoir in time period t; Let i be the maximum allowable discharge flow of the i-th second reservoir in time period t; N represents the minimum allowable output of the i-th hydropower station in time period t; j，it Let i be the output of the i-th hydropower station in time period t; Let i be the maximum allowable output of the i-th hydropower station in time period t; The balance constraints for the wind power station and the photovoltaic power station are as follows: Among them, P it P represents the output of the i-th pumped storage power station during time period t. ht P represents the output of the h-th hydropower station during time period t. st P represents the output of the s-th photovoltaic power station during time period t; wt Let w be the output of the w-th wind power station during time period t; Let be the power load value connected to the b-th bus in the t-th time period.

3. A pumped-storage-water-wind-solar coordinated operation control device, characterized in that, The pumped storage-water-wind-solar coordinated operation control device includes: The model building module is used to establish a pumped storage-water-wind-solar coordinated operation control model. The pumped storage-water-wind-solar coordinated operation control model includes an objective function and constraints. The objective function aims to minimize the total power generation water consumption of the reservoir and maximize the expected maximum amount of electricity that can be absorbed. The constraints include balance constraints for pumped storage power stations, balance constraints for hydropower stations, and balance constraints for wind power stations and photovoltaic power stations. The model solving module is used to optimize and solve the pumped storage-water-wind-solar coordinated operation control model to obtain the pumped storage-water-wind-solar coordinated operation control scheme. The pumped storage-water-wind-solar coordinated operation control scheme includes the mode and output of the pumped storage power station, the output of the hydropower station, the output of the wind power station, and the output of the photovoltaic power station. The mode includes the power generation mode and the pumping mode. The objective function is: Among them, W out The target value for total power generation water consumption of the reservoir; T is the total number of time periods included in the scheduling cycle; N is the total number of reservoirs, including the first reservoir and the second reservoir. The first reservoir is the upper and lower reservoirs of the pumped storage power station, and the second reservoir is the reservoir of the hydropower station. Let be the outflow from the i-th reservoir in the t-th time period; Δt be the duration of a single time period; F be the expected maximum amount of electricity that can be absorbed; S be the total number of power output combination scenarios; Prob(s) be the probability of the s-th power output combination scenario occurring; J be the total number of photovoltaic power stations. For the j-th photovoltaic power station in the t-th time period and scenario r s,j The output of the lower part, r s,j Let be the scenario to which the j-th photovoltaic power station belongs under the s-th power output combination scenario; I is the total number of hydropower stations; Let K be the output of the i-th hydropower station in the t-th time period; K is the total number of wind power stations. For the k-th wind power station in the t-th time period and scenario r s,k The output of the lower part, r s,k Let G be the scenario to which the k-th wind power station belongs under the s-th power output combination scenario; G is the total number of constraint sections. Let G be the amount of power wasted at the g-th constrained section in the t-th time period and the s-th power output combination scenario; When pumped storage, hydropower, wind power, and solar power are operated in a coordinated manner, the sum of the loads of the pumped storage power station, the hydropower station, the wind power station, and the photovoltaic power station equals the load of the power system. Pumped storage power stations adopt an alternating operation mode of power generation and pumping mode. The alternating operation of power generation and pumping mode is either a one-time power generation mode followed by a one-time pumping mode, or a one-time power generation mode followed by two pumping modes. The pumped storage-water-wind-solar coordinated operation control model is optimized and solved to obtain the pumped storage-water-wind-solar coordinated operation control scheme. Specifically, the optimization algorithm is used to optimize and solve the pumped storage-water-wind-solar coordinated operation control model to obtain the pumped storage-water-wind-solar coordinated operation control scheme.

4. A computer device, comprising: A memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that the processor executes the computer program to implement the pumped storage-water-wind-solar coordinated operation control method according to any one of claims 1-2.

5. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the pumped storage-water-wind-solar coordinated operation control method as described in any one of claims 1-2.

6. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by the processor, it implements the pumped storage-water-wind-solar coordinated operation control method as described in any one of claims 1-2.

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