Pumped storage-water-wind-light cooperative operation control method and related device

Abstract

The invention discloses a pumped storage-water-wind-light cooperative operation control method and a related device, and relates to the technical field of pumped storage-water-wind-light cooperative operation, and the method comprises the steps: firstly building a pumped storage-water-wind-light cooperative operation control model; the pumped storage-water-wind-light cooperative operation control model comprises a target function and constraint conditions, and the target function takes minimization of a reservoir total power generation water consumption target value and maximization of an absorptive electric quantity expectation maximum value as optimization targets; the constraint conditions comprise a pumped storage power station balance constraint, a hydropower station balance constraint and a wind power station and photovoltaic power station balance constraint, and then carrying out optimization solution on the pumped storage-water-wind-light cooperative operation control model to obtain a pumped storage-water-wind-light cooperative operation control scheme. According to the application, pumped storage-water-wind-light cooperative operation can be effectively controlled, and the pumped storage-water-wind-light cooperative operation performance is improved.

Description

Technical Field

[0001] The present application relates to the technical field of pumped storage-water-wind-solar coordinated operation, and in particular to a pumped storage-water-wind-solar coordinated operation control method and related devices. Background Art

[0002] In the context of global energy transformation and climate change response, the development and utilization of renewable energy has become a social consensus. Renewable energy such as wind power and solar energy are regarded as an important part of the future energy system because of their clean and renewable characteristics. However, these renewable energy sources have problems such as randomness, intermittency and volatility, which pose challenges to the safe and stable operation of the power grid. To solve this problem, the pumped storage-water-wind-light collaborative operation mode, which is coordinated by pumped storage power stations (referred to as "pumped storage"), hydropower stations (referred to as "water"), wind power stations (referred to as "wind"), and photovoltaic power stations (referred to as "light"), came into being, and became a key path to promote the high-quality development of the energy system.

[0003] As an important energy storage facility, pumped storage power station plays multiple roles in the power system, such as peak shaving and valley filling, load regulation, and improving grid stability. It can release stored electricity to supplement grid demand when wind power and photovoltaic power generation are insufficient. When wind power and photovoltaic power generation are in excess, the excess electricity is converted into water energy and stored for subsequent use. This energy storage characteristic makes pumped storage power station a bridge between renewable energy and the grid. As another important renewable energy source, hydropower station has the characteristics of strong regulation ability and fast response speed. Especially for power stations with large reservoirs for annual regulation, through optimized scheduling and fast and flexible regulation of hydropower units, it can effectively smooth out the fluctuations of wind power and photovoltaic power generation and adjust them into smooth, stable and high-quality power sources. This basic regulation role of hydropower is of great significance to improving the safety and stability of the grid. As the main renewable energy generation methods, wind power and photovoltaic power generation have natural complementarity. Wind power has a stronger power generation capacity at night and during periods with high wind speed, while photovoltaic power generation has a stronger power generation capacity during the day and during periods with sufficient light. Through reasonable layout and scheduling, wind power and photovoltaic power generation can be complemented in time and the overall utilization rate of renewable energy can be improved.

[0004] In the context of energy transformation and power system reform, the pumped storage-water-wind-light coordinated operation mode has gradually become a research hotspot. This mode integrates the advantages of different energy sources to achieve optimal allocation and efficient utilization of resources. Specifically, pumped storage power stations, as energy storage facilities, can smooth the fluctuations of wind power and photovoltaic power generation; hydropower stations, as regulating power sources, can further enhance the stability and security of the power grid; wind power and photovoltaic power generation, as the main renewable energy generation methods, provide clean and sustainable electricity for the power grid. With the advancement of technology and the reduction of costs, the economic benefits of the pumped storage-water-wind-light coordinated operation mode have gradually emerged. Through optimized scheduling and scientific management, the complementary advantages and coordinated development of different energy sources can be achieved, and the operating efficiency and economic benefits of the entire energy system can be improved.

[0005] In summary, the pumped storage-water-wind-solar coordinated operation mode is an important solution proposed in the context of global energy transformation and power system reform. It integrates the advantages of different energy sources to achieve optimal allocation and efficient utilization of resources, and provides strong support for building a clean, low-carbon, safe and efficient energy system. However, there is currently a lack of methods that can effectively control the coordinated operation of pumped storage-water-wind-solar. Summary of the invention

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

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

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

[0009] Establish a pumped storage-water-wind-photovoltaic coordinated operation control model; the pumped storage-water-wind-photovoltaic coordinated operation control model includes an objective function and constraints; the objective function takes minimizing the target value of total water consumption for power generation in the reservoir and maximizing the expected maximum value of the amount of electricity that can be absorbed as the optimization goal; 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;

[0010] The pumped storage-water-wind-photovoltaic coordinated operation control model is optimized and solved to obtain a pumped storage-water-wind-photovoltaic coordinated operation control scheme; the pumped storage-water-wind-photovoltaic 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 a power generation mode and a pumping mode.

[0011] In a second aspect, the present application provides a pumped storage-water-wind-photovoltaic coordinated operation control device, the pumped storage-water-wind-photovoltaic coordinated operation control device comprising:

[0012] A model building module is used to establish a pumped storage-water-wind-photovoltaic coordinated operation control model; the pumped storage-water-wind-photovoltaic coordinated operation control model includes an objective function and constraints; the objective function takes minimizing the target value of the total water consumption for power generation in the reservoir and maximizing the expected maximum value of the amount of electricity that can be absorbed as the optimization goal; 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;

[0013] A model solving module is used to optimize and solve the pumped storage-water-wind-photovoltaic coordinated operation control model to obtain a pumped storage-water-wind-photovoltaic coordinated operation control scheme; the pumped storage-water-wind-photovoltaic 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 a power generation mode and a pumping mode.

[0014] In a third aspect, the present application provides a computer device, comprising: 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-mentioned pumped storage-water-wind-solar coordinated operation control method.

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

[0016] In a fifth aspect, the present application provides a computer program product, including a computer program, which, when executed by a processor, implements the above-mentioned pumped storage-water-wind-solar coordinated operation control method.

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

[0018] The present application provides a pumped storage-water-wind-photovoltaic coordinated operation control method and related devices. First, a pumped storage-water-wind-photovoltaic coordinated operation control model is established. The pumped storage-water-wind-photovoltaic coordinated operation control model includes an objective function and constraints. The objective function takes minimizing the target value of the total water consumption for power generation in the reservoir and maximizing the expected maximum value of the amount of electricity that can be consumed as the optimization goal. 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. Then, the pumped storage-water-wind-photovoltaic coordinated operation control model is optimized and solved to obtain a pumped storage-water-wind-photovoltaic coordinated operation control scheme. The pumped storage-water-wind-photovoltaic 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. This application establishes and solves a pumped-storage-water-wind-photovoltaic coordinated operation control model to obtain a pumped-storage-water-wind-photovoltaic coordinated operation control scheme that minimizes the target value of the total reservoir power generation water consumption and maximizes the expected maximum value of the amount of electricity that can be consumed. Subsequently, operation according to the pumped-storage-water-wind-photovoltaic coordinated operation control scheme can effectively control the pumped-storage-water-wind-photovoltaic coordinated operation and improve the pumped-storage-water-wind-photovoltaic coordinated operation performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

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

[0021] Figure 2 A flow chart of a pumped storage-water-wind-solar coordinated operation control method provided in Example 1 of the present application.

[0022] Figure 3 A detailed flow chart of a pumped storage-water-wind-solar coordinated operation control method provided in Example 1 of the present application.

[0023] Figure 4 A schematic diagram of the functional modules of a pumped storage-water-wind-solar coordinated operation control device provided in Example 2 of the present application.

[0024] Figure 5 A schematic diagram of the structure of a computer device provided in Example 3 of the present application. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0026] Example 1

[0027] The pumped storage-water-wind-light coordinated operation control method provided in the embodiment of the present application can be applied to Figure 1 In the application environment shown, the terminal communicates with the server through the network. The data storage system can store the data that the server needs to process. The data storage system can be set up separately, integrated on the server, or placed on the cloud or other servers. The terminal can send a pending operation control request (used to request the generation of a pumped storage-water-wind-photovoltaic coordinated operation control plan) to the server. After the server receives the pending operation control request, the server establishes a pumped storage-water-wind-photovoltaic coordinated operation control model for the pending operation control request. The pumped storage-water-wind-photovoltaic coordinated operation control model includes an objective function and constraints. The objective function takes minimizing the target value of the total water consumption for power generation in the reservoir and maximizing the expected maximum value of the amount of electricity that can be consumed as the optimization goal. The constraints include the balance constraint of the pumped storage power station, the balance constraint of the hydropower station, and the balance constraint of the wind power station and the photovoltaic power station. The pumped storage-water-wind-photovoltaic coordinated operation control model is optimized and solved to obtain a pumped storage-water-wind-photovoltaic coordinated operation control plan. The pumped storage-water-wind-photovoltaic coordinated operation control plan 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 server can feed back the obtained pumped storage-hydro-wind-solar coordinated operation control plan for 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 independently by a server or a terminal. For example, the terminal can directly process the pending operation control request, or the server can obtain the pending operation control request from the data storage system and process the pending operation control request.

[0029] The terminals may be, but are not limited to, various desktop computers, laptops, smart phones, tablet computers, IoT devices and portable wearable devices. IoT devices may be smart speakers, smart TVs, smart air conditioners, smart car-mounted devices, etc. Portable wearable devices may be smart watches, smart bracelets, head-mounted devices, etc. The server may be implemented as an independent server or a server cluster consisting of multiple servers, or a cloud server.

[0030] like Figure 2 As shown, a pumped storage-water-wind-solar coordinated operation control method is provided. The method is executed by a computer device, and can be executed by a computer device such as a terminal or a server alone, or can be executed by a terminal and a server together. In the embodiment of the present application, the method is applied to Figure 1 The server in the example is used to illustrate the following steps:

[0031] Step S1, establishing a pumped storage-water-wind-photovoltaic coordinated operation control model; the pumped storage-water-wind-photovoltaic coordinated operation control model includes an objective function and constraints; the objective function takes minimizing the target value of the total water consumption for power generation in the reservoir and maximizing the expected maximum value of the amount of electricity that can be consumed as the optimization goal; 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.

[0032] Step S2, optimizing and solving the pumped storage-water-wind-photovoltaic coordinated operation control model to obtain a pumped storage-water-wind-photovoltaic coordinated operation control scheme; the pumped storage-water-wind-photovoltaic 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 a power generation mode and a pumping mode.

[0033] By implementing the above-mentioned steps S1 to S2, this embodiment can obtain a pumped-storage-water-wind-photovoltaic coordinated operation control scheme that minimizes the target value of the total reservoir power generation water consumption and maximizes the expected maximum value of the absorbable electricity by establishing and solving the pumped-storage-water-wind-photovoltaic coordinated operation control model. Subsequent operation according to the pumped-storage-water-wind-photovoltaic coordinated operation control scheme can significantly improve the pumped-storage-water-wind-photovoltaic coordinated operation performance.

[0034] This embodiment establishes a pumped storage-water-wind-photovoltaic coordinated operation control model by considering the impact of the coordinated operation of pumped storage-hydro-wind-photovoltaic on the target value of the total power generation water consumption of the reservoir after complementation and the expected maximum value of the amount of electricity that can be consumed. The pumped storage-water-wind-photovoltaic coordinated operation control model includes an objective function and constraints. The objective function takes minimizing the target value of the total power generation water consumption of the reservoir and maximizing the expected maximum value of the amount of electricity that can be consumed as the optimization goal. 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 of the problem of the impact of the coordinated operation of pumped storage-water-wind-solar on the target value of the total power generation water consumption of the reservoir after complementation and the expected maximum value of the power that can be consumed. The objective is to minimize the target value of the total power generation water consumption of the reservoir and maximize the expected maximum value of the power that can be consumed in the pumped storage-water-wind-solar coordinated operation system. The objective function is:

[0036]

[0037] In the above formula, W out is the target value of total power generation water consumption of reservoirs, specifically the target value of total power generation water consumption of cascade reservoirs and pumped storage power station reservoirs. Cascade reservoirs refer to a series of stepped reservoirs built from upstream to downstream, each reservoir corresponds to a hydropower station, and a hydropower station may correspond to only one reservoir or to multiple reservoirs at the same time; T is the total number of time periods included in the dispatching cycle; N is the total number of reservoirs, which include the first reservoir and the second reservoir. The first reservoir is the upper reservoir and the lower reservoir of the pumped storage power station, and the second reservoir is the reservoir of the hydropower station; is the outflow of the i-th reservoir in the t-th period; Δt represents the time granularity, specifically the length of a single period, which can be represented by the number of hours included in a single period, and the length of each period is consistent; F is the expected maximum value of the power that can be absorbed; is the total number of output combination scenarios, J is the total number of photovoltaic power stations, S j is the number of output combination scenarios of the jth photovoltaic power station, K is the total number of wind power stations, S k is the number of output combination scenarios of the kth wind power station; is the probability of occurrence of the sth output combination scenario, r s,j and p(r s,j ) are the scenario to which the jth PV power station belongs under the sth output combination scenario and the probability of occurrence of the scenario, satisfying 1≤r s,j ≤S j , r s,k and p(r s,k) are the scenario to which the kth wind power station belongs under the sth output combination scenario and the probability of occurrence of the scenario, satisfying 1≤r s,k ≤S k ; is the jth PV plant in the tth period and scenario r s,j The output under; I is the total number of hydropower stations; is the output of the i-th hydropower station in the t-th period; is the k-th wind power station in the t-th period and scenario r s,k The output under the load; G is the total number of constraint sections; is the amount of power abandonment at the g-th constraint section in the t-th period and the s-th output combination scenario.

[0038] This embodiment further determines the constraint conditions for the problem of the impact of the coordinated operation of pumped storage-hydro-wind-solar on the target value of the total power generation water consumption of the reservoir after complementarity and the expected maximum value of the amount of electricity that can be consumed. In the coordinated operation of pumped storage-hydro-wind-solar, wind power stations and photovoltaic power stations can participate in 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 balance constraint of the pumped storage power station is:

[0040]

[0041]

[0042]

[0043] V i min ≤V i t ≤V i max (6)

[0044] In the above formula, is the storage capacity of the upper reservoir of the pumped storage power station at the t+1 period; is the storage capacity of the upper reservoir of the pumped storage power station in the tth period; Δt is the duration of a single period; is the pumped storage flow of the pumped storage power station in the tth period; is the power generation flow of the pumped storage power station in the tth period; is the storage capacity of the lower reservoir of the pumped storage power station at the t+1 period; is the storage capacity of the lower reservoir of the pumped storage power station at the tth period; is the inflow of the lower reservoir of the pumped storage power station in the tth period; is the outflow from the lower reservoir of the pumped storage power station in the tth period; is the storage capacity of the i-th first reservoir at the t+1 period, and the first reservoir is the upper reservoir and the lower reservoir of the pumped storage power station; is the storage capacity of the i-th first reservoir at the t-th period; is the inflow of the first reservoir of the ith reservoir in the tth period; is the outflow of the first reservoir of the ith reservoir in the tth period; is the lower limit of the storage capacity of the i-th first reservoir; is the upper limit of the storage capacity of the i-th first reservoir.

[0045] The balance constraint of the hydropower station is:

[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) is the water storage capacity of the i-th second reservoir in the t+1 period, that is, the water storage capacity at the end of the t period, m 3 , the second reservoir is the reservoir of the hydropower station; V h，it is the water storage capacity of the i-th second reservoir in the t-th period, that is, the water storage capacity at the beginning of the t-th period, m 3 ; R h，it is the inflow of the second reservoir at the tth period, m 3 / s;Outq h，it is the discharge flow of the second reservoir at the tth period, m 3 / s; Δt is the duration of a single period, s; ​​Q h，it is the power generation water flow of the i-th second reservoir in the t-th period, m 3 / s;S h，it is the water discharge of the second reservoir at the tth period, m 3 / s; is the i-1th second reservoir at t-ΔT i-1 Discharge flow rate during the period, m 3 / s, the i-1th second reservoir is located upstream of the i-th second reservoir, and water flows from the i-1th second reservoir to the i-th second reservoir, ΔT i-1 is the number of time periods corresponding to the water flow lag from the i-1th second reservoir to the i-th second reservoir; I h，it is the average inflow from the i-1th second reservoir to the i-th second reservoir in the tth period, m 3 / s; is the minimum water storage capacity allowed for the i-th second reservoir in the t-th period, m 3 ; is the maximum water storage capacity allowed for the i-th second reservoir in the t-th period, m 3 ; is the minimum discharge flow allowed by the second reservoir at the tth period, m 3 / s; is the maximum discharge flow allowed by the second reservoir at the ith time period, m 3 / s; is the minimum output allowed by the i-th hydropower station in the t-th period, kW; N j，it is the output of the i-th hydropower station in the t-th period, kW; is the maximum output allowed for the i-th hydropower station in the t-th period, kW.

[0053] The balance constraints of wind power stations and photovoltaic power stations are:

[0054]

[0055] In formula (13), P it is the output of the ith pumped storage power station in the tth period, i.e., the day-ahead output forecast value; P ht is the output of the h-th hydropower station in the t-th period; P st is the output of the s-th photovoltaic power station in the t-th period; P wt is the output of the w-th wind power station in the t-th period; It is the power load value connected to the b-th bus in the t-th period, that is, the power load value connected to the b-th bus in the t-th period.

[0056] After constructing the corresponding constraints and objective functions, this embodiment can further solve the above problem, that is, optimize and solve the pumped storage-water-wind-photovoltaic coordinated operation control model to obtain a pumped storage-water-wind-photovoltaic coordinated operation control scheme. The pumped storage-water-wind-photovoltaic 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 a power generation mode and a pumping mode.

[0057] Specifically, this embodiment can use a 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 total power generation water consumption target value and the expected maximum value of the amount of electricity that can be consumed by the reservoir, that is, to predict the impact of the pumped storage-water-wind-solar coordinated operation mode on the total power generation water consumption target value and the expected maximum value of the amount of electricity that can be consumed by the reservoir, and at the same time obtain a pumped storage-water-wind-solar coordinated operation control scheme, and can further evaluate the load side electricity demand and safety constraints.

[0058] At this time, the pumped storage-water-wind-photovoltaic coordinated operation control model is optimized and solved to obtain a pumped storage-water-wind-photovoltaic coordinated operation control scheme, which specifically includes: using a successive optimization algorithm to optimize and solve the pumped storage-water-wind-photovoltaic coordinated operation control model to obtain a pumped storage-water-wind-photovoltaic 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 the load data issued by the power grid (i.e., the power demand borne by the power grid at a certain moment or in a certain period of time), the equipment information of each hydropower station, and the water inflow process of each reservoir (including the upper and lower reservoirs of the pumped storage power station and the reservoir of the hydropower station) on the same day. The equipment information of each hydropower station includes the number of reservoirs, regulation performance, normal water level, dead water level, installed capacity and regulation storage capacity. The regulation performance includes daily regulation, weekly regulation, monthly regulation, seasonal regulation, annual regulation and multi-year regulation. The normal water level refers to the highest water level allowed under normal operation, the dead water level refers to the lowest water level allowed under normal operation, the installed capacity refers to the sum of the rated capacities of all generators installed in the hydropower station, and the regulation storage 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 participate in scheduling as uncontrollable power plants in the power station group. Hydropower stations have only one operating condition. Pumped-storage power stations have both power generation conditions and pumping conditions. Their energy conversion characteristics are as follows.

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

[0063]

[0064] In formula (14), is the power generation of the s-th pumped storage unit in the t-th period, and the pumped storage power station includes multiple pumped storage units; is the average generating head of the pumped storage unit in the tth period, and the head refers to the vertical height from the horizontal surface of the upstream water storage to the turbine inlet; is the power generation flow of the s-th pumped storage unit in the t-th period; is the power generation efficiency of the sth pumped storage unit.

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

[0066]

[0067] In formula (15), is the pumping power consumption of the s-th pumped storage unit in the t-th period; is the average pumping head of the pumped storage unit in the tth period, and the head is the vertical lifting height of the pump; is the pumped storage flow of the s-th pumped storage unit in the t-th period; is the operating efficiency of the sth pumped storage unit under pumping state.

[0068] (3) Set the pumped storage-water-wind-solar coordinated operation mode and determine the load process of the pumped storage-water-wind-solar coordinated operation mode. For a pumped storage power station, under the premise of satisfying 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 to "one pumping and one generation" or "one pumping and two generation". At this time, the pumped storage power station adopts a working mode in which the power generation mode and the pumping mode are operated alternately, wherein the power generation mode and the pumping mode are operated alternately as one power generation mode and one pumping mode, that is, one power generation mode, one pumping mode, one power generation mode, and one pumping mode are executed in a cycle, or the power generation mode and the pumping mode are operated alternately as 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, and one pumping mode are executed in a cycle. The load of the hydropower station + the load of the pumped-storage power station + the load of the wind power station + the load of the photovoltaic power station = the load of the power system, that is, when the pumped-storage-water-wind-light are operated in coordination, the sum of the load of the pumped-storage power station, the load of the hydropower station, the load of the wind power station and the load of the photovoltaic power station is equal to the load of the power system.

[0069] The present embodiment provides a method for supporting the coordinated operation of pumped storage-water-wind-photovoltaic power generation on grid regulation, taking into account the impact of the coordinated operation of pumped storage-water-wind-photovoltaic power generation on the target value of the total power generation water consumption of the reservoir after complementation and the expected maximum value of the amount of electricity that can be absorbed, obtaining parameters such as load data issued by the power grid, equipment information of each hydropower station and the water inflow process of each reservoir on the same day; determining the energy conversion characteristics of the pumped storage power station, the hydropower station, the wind power station and the photovoltaic power station; setting the coordinated operation mode of pumped storage-water-wind-photovoltaic power generation, determining the load process of the coordinated operation of pumped storage-water-wind-photovoltaic power generation; determining the objective function of the problem of the impact of the coordinated operation of pumped storage-water-wind-photovoltaic power generation on the target value of the total power generation water consumption of the reservoir after complementation and the expected maximum value of the amount of electricity that can be absorbed; determining the constraints of the problem of the impact of the coordinated operation of pumped storage-water-wind-photovoltaic power generation on the target value of the total power generation water consumption of the reservoir after complementation and the expected maximum value of the amount of electricity that can be absorbed; solving the above-mentioned optimization problem; and evaluating the power demand and safety constraints on the load side. This embodiment proposes a pumped storage-hydro-wind-solar coordinated operation model, and uses a successive optimization algorithm to optimize and solve it, comprehensively considering factors such as load-side electricity demand and safety constraints, and providing a certain reference for the supporting role of pumped storage-hydro-wind-solar coordinated operation on grid regulation in different scenarios.

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

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

[0072] Example 2

[0073] Based on the same inventive concept, the embodiment of the present application also provides a pumped storage-water-wind-light coordinated operation control device for realizing the pumped storage-water-wind-light coordinated operation control method involved above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in the embodiment of the pumped storage-water-wind-light coordinated operation control device provided below can be referred to the limitations of the pumped storage-water-wind-light coordinated operation control method above, and will not be repeated here.

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

[0075] The model building module M1 is used to establish a pumped storage-water-wind-photovoltaic coordinated operation control model; the pumped storage-water-wind-photovoltaic coordinated operation control model includes an objective function and constraints; the objective function takes minimizing the target value of the total water consumption for power generation in the reservoir and maximizing the expected maximum value of the amount of electricity that can be consumed as the optimization goal; 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.

[0076] The model solving module M2 is used to optimize and solve the pumped storage-water-wind-photovoltaic coordinated operation control model to obtain a pumped storage-water-wind-photovoltaic coordinated operation control scheme; the pumped storage-water-wind-photovoltaic 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 a power generation mode and a pumping mode.

[0077] Example 3

[0078] In an exemplary embodiment, a computer device is provided. The computer device may be a server or a terminal. The internal structure diagram thereof may be as follows: Figure 5 As shown. The computer device includes a processor, a memory, an input / output interface (Input / Output, referred to as I / O) and a communication interface. The processor, the memory and the input / output interface are connected through a system bus, and the communication interface is connected to the system bus through the input / output interface. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store data. The input / output interface of the computer device is used to exchange information between the processor and an external device. The communication interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, a pumped storage-water-wind-light coordinated operation control method is implemented.

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

[0080] In an 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-light coordinated operation control method described in Example 1.

[0081] Example 4

[0082] An embodiment of the present application provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the pumped storage-water-wind-solar coordinated operation control method described in Example 1 is implemented.

[0083] Example 5

[0084] An embodiment of the present application provides a computer program product, including a computer program, which, when executed by a processor, implements the pumped storage-water-wind-solar coordinated operation control method described in Example 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, stored data, displayed data, 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 relevant data must comply with relevant regulations.

[0086] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, 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 article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and core ideas of this application. At the same time, for those skilled in the art, according to the ideas of this application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting this application.

Claims

1. A pumped storage-water-wind-solar coordinated operation control method, characterized in that: The pumped storage-water-wind-solar coordinated operation control method comprises: Establish a pumped storage-water-wind-photovoltaic coordinated operation control model; the pumped storage-water-wind-photovoltaic coordinated operation control model includes an objective function and constraints; the objective function takes minimizing the target value of total water consumption for power generation in the reservoir and maximizing the expected maximum value of the amount of electricity that can be absorbed as the optimization goal; 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; The pumped storage-water-wind-photovoltaic coordinated operation control model is optimized and solved to obtain a pumped storage-water-wind-photovoltaic coordinated operation control scheme; the pumped storage-water-wind-photovoltaic 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 a power generation mode and a pumping mode.

2. The pumped storage-water-wind-solar coordinated operation control method according to claim 1 is characterized in that: The objective function is: Among them, W out is the target value of the total power generation water consumption of the reservoir; T is the total number of time periods included in the dispatching cycle; N is the total number of reservoirs, which include the first reservoir and the second reservoir. The first reservoir is the upper reservoir and the lower reservoir of the pumped storage power station, and the second reservoir is the reservoir of the hydropower station; is the outflow of the i-th reservoir in the t-th period; Δt is the duration of a single period; F is the expected maximum value of the power that can be absorbed; S is the total number of output combination scenarios; Prob(s) is the probability of occurrence of the s-th output combination scenario; J is the total number of photovoltaic power stations; is the jth PV plant in the tth period and scenario r s，j The output of the lower part, r s，j is the scenario to which the jth PV power station belongs under the sth output combination scenario; I is the total number of hydropower stations; is the output of the i-th hydropower station in the t-th period; K is the total number of wind power stations; is the k-th wind power station in the t-th period and scenario r s，k The output of the lower part, r s，k is the scenario to which the kth wind power station belongs under the sth output combination scenario; G is the total number of constraint sections; is the amount of power abandonment at the g-th constraint section in the t-th period and the s-th output combination scenario.

3. The pumped storage-water-wind-solar coordinated operation control method according to claim 1 is characterized in that: The balance constraint of the pumped storage power station is: In i min ≤V i t ≤V i max ; in, is the storage capacity of the upper reservoir of the pumped storage power station at the t+1 period; is the storage capacity of the upper reservoir of the pumped storage power station in the tth period; Δt is the duration of a single period; is the pumped storage flow of the pumped storage power station in the tth period; is the power generation flow of the pumped storage power station in the tth period; is the storage capacity of the lower reservoir of the pumped storage power station at the t+1 period; is the storage capacity of the lower reservoir of the pumped storage power station at the tth period; is the inflow of the lower reservoir of the pumped storage power station in the tth period; is the outflow of the lower reservoir of the pumped storage power station in the tth period; is the storage capacity of the i-th first reservoir at the t+1 period, and the first reservoir is the upper reservoir and the lower reservoir of the pumped storage power station; is the storage capacity of the i-th first reservoir at the t-th period; is the inflow of the first reservoir of the ith reservoir in the tth period; is the outflow of the first reservoir of the ith reservoir in the tth period; is the lower limit of the storage capacity of the i-th first reservoir; is the upper limit of the storage capacity of the i-th first reservoir; The balance constraint of the hydropower station is: V h，i(t+1 )=V h，it +(R h，it -Outq h，it )△t; Outq h，it =Q h，it +S h，it ; Among them, V h，i(t+1) V is the water storage capacity of the i-th second reservoir in the t+1 period, and the second reservoir is the reservoir of the hydropower station; h，it is the water storage capacity of the i-th second reservoir in the t-th period; R h，it Outq is the inflow of the second reservoir at the tth period; h，it is the discharge flow of the second reservoir in the tth period; Δt is the duration of a single period; Q h，it is the power generation water flow of the i-th second reservoir in the t-th period; S h，it is the water discharge of the i-th second reservoir in the t-th period; is the i-1th second reservoir at the t-△T i-1 The discharge flow of the time period, the i-1th second reservoir is located upstream of the i-th second reservoir, △T i-1 is the number of time periods corresponding to the water flow lag from the i-1th second reservoir to the i-th second reservoir; I h，it is the average inflow from the i-1th second reservoir to the i-th second reservoir in the tth period; is the minimum water storage capacity allowed for the i-th second reservoir in the t-th period; is the maximum water storage capacity allowed for the i-th second reservoir in the t-th period; is the minimum discharge flow allowed by the i-th second reservoir in the t-th period; is the maximum discharge flow allowed by the i-th second reservoir in the t-th period; is the minimum output allowed by the i-th hydropower station in the t-th period; N j，it is the output of the i-th hydropower station in the t-th period; is the maximum output allowed by the i-th hydropower station in the t-th period; The balance constraints of the wind power station and the photovoltaic power station are: Among them, P it is the output of the ith pumped storage power station in the tth period; P ht is the output of the h-th hydropower station in the t-th period; P st is the output of the s-th photovoltaic power station in the t-th period; P wt is the output of the w-th wind power station in the t-th period; is the power load value connected to the bth bus in the tth period.

4. The pumped storage-water-wind-solar coordinated operation control method according to claim 1 is characterized in that: When pumped storage-water-wind-solar power operates in a coordinated manner, the sum of the load of the pumped storage power station, the load of the hydropower station, the load of the wind power station and the load of the photovoltaic power station is equal to the load of the power system.

5. The pumped storage-water-wind-solar coordinated operation control method according to claim 1 is characterized in that: The pumped storage power station adopts an operating mode in which power generation mode and pumping mode are operated alternately, wherein the power generation mode and pumping mode are operated alternately as one power generation mode and one pumping mode, or the power generation mode and pumping mode are operated alternately as one power generation mode and two pumping modes.

6. The pumped storage-water-wind-solar coordinated operation control method according to claim 1 is characterized in that: The pumped storage-water-wind-solar coordinated operation control model is optimized and solved to obtain a pumped storage-water-wind-solar coordinated operation control scheme, specifically comprising: using a successive optimization algorithm to optimize and solve the pumped storage-water-wind-solar coordinated operation control model to obtain a pumped storage-water-wind-solar coordinated operation control scheme.

7. A pumped storage-water-wind-solar coordinated operation control device, characterized in that: The pumped storage-water-wind-light coordinated operation control device comprises: A model building module is used to establish a pumped storage-water-wind-photovoltaic coordinated operation control model; the pumped storage-water-wind-photovoltaic coordinated operation control model includes an objective function and constraints; the objective function takes minimizing the target value of the total water consumption for power generation in the reservoir and maximizing the expected maximum value of the amount of electricity that can be absorbed as the optimization goal; 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; A model solving module is used to optimize and solve the pumped storage-water-wind-photovoltaic coordinated operation control model to obtain a pumped storage-water-wind-photovoltaic coordinated operation control scheme; the pumped storage-water-wind-photovoltaic 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 a power generation mode and a pumping mode.

8. A computer device comprising: 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 any one of claims 1 to 6.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the pumped storage-water-wind-solar coordinated operation control method described in any one of claims 1 to 6 is implemented.

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

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