Scheduling method, device and equipment applied to water and electricity management system and medium

Abstract

The application discloses a kind of applied to the scheduling method, device, equipment and medium of water and electricity management system.It comprises: obtaining the system running information of water and electricity management system in current scheduling period;First running information and third running information are handled based on distribution operation model, update first running information;Second running information and third running information are handled based on water supply operation model, update second running information;First running information, second running information and third running information are handled based on water and electricity coupling operation model, update third running information;With minimization objective function as update target, to make water and electricity management system work based on updated running information.Solve the problem that water and electricity are allocated according to demand in prior art, leading to low utilization of water and electricity resources, high allocation cost, while meeting the demand for water and electricity, improve the utilization of water and electricity resources, reduce cost consumption, realize the effect of energy cost minimization.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of computer processing, and in particular to a scheduling method and device applied to a water and electricity management system, equipment and a medium. BACKGROUND

[0002] In recent years, with the development of science and technology, the construction process of water distribution and power distribution has also accelerated. In order to meet the water and electricity demand of various users, water and electricity need to be managed and allocated. At present, in the process of allocating water and electricity, corresponding equipment is usually configured to allocate water or electricity according to the demand for water or electricity, such as purchasing electricity from the upper-level power grid according to the demand for electricity and then distributing electricity to each user end according to the demand, and introducing corresponding water to the water end through a water pump according to the demand for water.

[0003] This way of allocating water and electricity according to demand cannot coordinate the use of water and electricity resources, and also has the problem of high allocation cost. SUMMARY

[0004] The present application provides a scheduling method and device applied to a water and electricity management system, equipment and a medium, to realize the technical effect of meeting the demand for water and electricity while improving the utilization rate of water and electricity resources, reducing cost consumption, and minimizing energy cost.

[0005] According to an aspect of the present application, a scheduling method applied to a water and electricity management system is provided, the water and electricity management system comprising a water supply system, a power distribution system and a water and electricity coupling system; the method comprising:

[0006] obtaining system operation information of the water and electricity management system in a current scheduling period; wherein the system operation information comprises first operation information corresponding to the water supply system, first operation information corresponding to the power distribution system and third operation information corresponding to the water and electricity coupling system;

[0007] processing the first operation information and the third operation information based on a pre-constructed water supply operation model, and updating the first operation information;

[0008] processing the first operation information and the third operation information based on a pre-constructed power distribution operation model, and updating the first operation information;

[0009] processing the first operation information, the first operation information and the third operation information based on a pre-constructed water and electricity coupling operation model, and updating the third operation information;

[0010] taking a minimization objective function as an update target, so that the water and electricity management system works based on the updated operation information; wherein the objective function is associated with energy cost.

[0011] According to another aspect of the present application, there is provided a scheduling device applied to a water-power management system, the water-power management system comprising a water supply system, a power distribution system and a water-power coupling system; the device comprising:

[0012] a system operation information acquisition module, configured to acquire system operation information of the water-power management system in a current scheduling period; wherein the system operation information comprises first operation information corresponding to the water supply system, first operation information corresponding to the power distribution system and third operation information corresponding to the water-power coupling system;

[0013] a first updating module, configured to process the first operation information and the third operation information based on a pre-constructed water supply operation model, and update the first operation information;

[0014] a second updating module, configured to process the first operation information and the third operation information based on a pre-constructed power distribution operation model, and update the first operation information;

[0015] a third updating module, configured to process the first operation information, the first operation information and the third operation information based on a pre-constructed water-power coupling operation model, and update the third operation information;

[0016] a minimization module, configured to take a minimization objective function as an updating target, so that the water-power management system works based on the updated operation information; wherein the objective function is associated with energy consumption cost.

[0017] According to another aspect of the present application, there is provided an electronic device, the electronic device comprising:

[0018] at least one processor; and

[0019] a memory in communication with the at least one processor; wherein

[0020] the memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor to enable the at least one processor to execute the scheduling method applied to the water-power management system according to any one of the embodiments of the present application.

[0021] According to another aspect of the present application, there is provided a computer readable storage medium, the computer readable storage medium storing computer instructions for enabling a processor to execute the scheduling method applied to the water-power management system according to any one of the embodiments of the present application.

[0022] The technical scheme of the embodiment of the present application is: obtaining first operation information corresponding to the power distribution system, second operation information corresponding to the water supply system and third operation information corresponding to the water-electricity coupling system in the current scheduling period; processing the first operation information and the third operation information based on the pre-constructed power distribution operation model, updating the first operation information; processing the second operation information and the third operation information based on the pre-constructed water supply operation model, updating the second operation information; processing the first operation information, the second operation information and the third operation information based on the pre-constructed water-electricity coupling operation model, updating the third operation information; taking the minimization of the objective function as the updating target, so that the water-electricity management system works based on the updated operation information, solving the problem in the prior art that the water-electricity distribution according to the demand leads to low utilization of water-electricity resources and high distribution cost, realizing that the first operation information corresponding to the power distribution system, the second operation information corresponding to the water supply system and the third operation information corresponding to the water-electricity coupling system are monitored in the current scheduling period, and then the first operation information is updated, the second operation information is updated and the third operation information is updated in the process of processing the first operation information and the third operation information based on the power distribution operation model, processing the second operation information and the third operation information based on the water supply operation model and processing the first operation information, the second operation information and the third operation information based on the water-electricity coupling operation model, and the updated operation information is obtained at the minimum energy cost, and the water-electricity management system is enabled to work based on the operation information, realizing the minimum total energy cost while ensuring the basic demand for electricity and water, improving the utilization rate of water-electricity resources through the water-electricity coupling mode.

[0023] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present application, nor is it used to limit the scope of the present application. Other features of the present application will become apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0025] Figure 1 is a flow chart of a scheduling method applied to a water-electricity management system according to the first embodiment of the present application;

[0026] Figure 2 is a structural schematic diagram of a water-electricity management system according to the first embodiment of the present application;

[0027] Figure 3is a structural schematic diagram of a water supply system according to an embodiment of the present application;

[0028] Figure 4 is a structural schematic diagram of a dispatching device applied to a water and electricity management system according to an embodiment of the present application;

[0029] Figure 5 is a structural schematic diagram of an electronic device implementing a dispatching method applied to a water and electricity management system according to an embodiment of the present application. DETAILED DESCRIPTION

[0030] In order to enable persons skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by persons skilled in the art without creative efforts should fall within the protection scope of the present application.

[0031] It should be noted that the terms "first", "second", and the like in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or a chronological sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units does not necessarily have to be limited to only those steps or units clearly listed, but can include other steps or units that are not clearly listed or inherent to the process, method, product, or device.

[0032] Embodiment one

[0033] Figure 1 is a flowchart of a dispatching method applied to a water and electricity management system according to an embodiment of the present application. The embodiment can be applicable to the case of optimizing the operation of a water and electricity management system. The method can be executed by a dispatching device applied to a water and electricity management system. The dispatching device applied to a water and electricity management system can be implemented in the form of hardware and / or software. The dispatching device applied to a water and electricity management system can be configured in a computing device. As shown in the figure, the method comprises the following steps. Figure 1

[0034] S110, acquiring system operation information of the water and electricity management system in a current dispatching period. The system operation information comprises first operation information corresponding to a water supply system, first operation information corresponding to a power distribution system, and third operation information corresponding to a water and electricity coupling system.​

[0035] The water and electricity management system comprises a water supply system, a power distribution system, and a water and electricity coupling system. The structure of the water and electricity management system can be seen from Figure 2 The water supply system is a system capable of supplying water, and its normal operation relies on a water pump. The water supply system can supply water to users and hydropower stations. The power distribution system can be a power distribution network, which receives power from a power transmission network or a regional power plant and distributes the power to various users through power distribution facilities. The power distribution system can be composed of overhead lines, cables, towers, distribution transformers, disconnectors, reactive power compensators, and some auxiliary facilities. The water and electricity coupling system is a system that relies on both the water supply system and the power distribution system, such as an electric water heating system, which requires water from the water supply system and load from the power distribution system. The dispatching period can be understood as the period for optimizing the operation of the water and electricity management system, which can be set by technical personnel according to actual needs.

[0036] In this embodiment, the first operation information corresponding to the water supply system in the water and electricity management system in the current dispatching period can be obtained. The first operation information includes but is not limited to the water flow into and out of the regulating structure, the initial capacity and cross-sectional area of the regulating structure, the water pressure, elevation, and conventional water load flow of each node in the water distribution network, etc. The first operation information corresponding to the power distribution system is obtained. The first operation information includes but is not limited to the active power, reactive power, and current flowing out of each node of the power distribution network, the conventional active load and reactive load on the node, and the reactive power compensation of the reactive power generator, etc. The third operation information corresponding to the water and electricity coupling system is obtained. The third operation information includes but is not limited to the active power and reactive power output by the hydropower station, the effective flow used for power generation by the hydropower station, the heat supply of the electric water heating system, the heat demand of the electric water heating system, the volume and water temperature of the electric heating boiler, etc.

[0037] In this embodiment, the first operation information corresponding to the water supply system in the water and electricity management system in the current dispatching period can be obtained. The first operation information includes but is not limited to the water flow into and out of the regulating structure, the initial capacity and cross-sectional area of the regulating structure, the water pressure, elevation, and conventional water load flow of each node in the water distribution network, etc. The first operation information corresponding to the power distribution system is obtained. The first operation information includes but is not limited to the active power, reactive power, and current flowing out of each node of the power distribution network, the conventional active load and reactive load on the node, and the reactive power compensation of the reactive power generator, etc. The third operation information corresponding to the water and electricity coupling system is obtained. The third operation information includes but is not limited to the active power and reactive power output by the hydropower station, the effective flow used for power generation by the hydropower station, the heat supply of the electric water heating system, the heat demand of the electric water heating system, the volume and water temperature of the electric heating boiler, etc.

[0038] In this embodiment, the water and electricity coupling system also has a demand for electricity in the power distribution system. In order to meet the electricity demand of the water and electricity coupling system, the third operation information of the water and electricity coupling system can be used to determine the corresponding electricity demand during the operation of the power distribution system. Then, the first operation information is updated in combination with the first operation information.

[0039] In practical applications, a power distribution operation model can be constructed in advance to support the operation of the power distribution system. The first operation information and the third operation information can be input into the power distribution operation model. The first operation information is adjusted in combination with the third operation information, so that the adjusted first operation information can meet the demand for electricity of the user and the demand for electricity of the water and electricity coupling system, and also minimize the electricity cost.

[0040] To ensure the safety and economy of system operation, the adjustment information can be constrained when updating the first operation information to ensure that the operation information is within a reasonable and safe range. In the embodiment, the first operation information and the third operation information are processed based on the pre-constructed power distribution operation model to update the first operation information, including: determining a first constraint condition of the power distribution operation model; when the first operation information and the third operation information are processed based on the power distribution operation model to update the first operation information, the first operation information is constrained based on the first constraint condition to obtain the updated first operation information.

[0041] In the embodiment, the first constraint condition corresponding to the power distribution operation model can be pre-set, and the first operation information is constrained based on the first constraint condition in the process of processing the first operation information and the third operation information based on the power distribution operation model to update the first operation information, to obtain the updated first operation information. Optionally, the first constraint condition includes but is not limited to: a constraint condition of a power parameter in the power distribution system, a constraint condition of photovoltaic output in the power distribution system, and a constraint condition of a cold storage system operation in the power distribution system; wherein the power parameter includes at least one of current, voltage, power, load, resistance, and reactance.

[0042] For example, the constraint condition of the power parameter in the power distribution operation model is shown in formulas (1), (2), (3), and (4):

[0043]

[0044]

[0045]

[0046]

[0047] Wherein: Set υ(j) is a set of head nodes of pipes with j as the end node in the power distribution network; Set ω(j) is a set of nodes with j as the head node in the power distribution network; P ij,t , Q ij,t and I ij,t are the active power, reactive power and current from node i to node j in period t (i.e. cycle); r ij , x ij are the resistance and reactance of branch ij, respectively, are the active power and total active load of photovoltaic and hydropower station (hydropower station belongs to the water-power coupled system) connected to node j in period t; are the reactive power and total reactive load of photovoltaic and hydropower station connected to node j in period t; respectively the active and reactive load of node j at time period t; respectively the active and reactive power consumed by the cold storage at node j at time period t; respectively the active and reactive power consumed by the pump station at node j at time period t; respectively the active power consumed by the electric heating boiler at node j at time period t; the reactive power compensated by the static var generator (SVG) whose regulation range is The subscript t represents the time period and will not be repeated hereinafter.

[0048] The photovoltaic output constraint condition in the distribution operation model is shown in formula (5):

[0049]

[0050] In formula (5): is the maximum output of photovoltaic at node i; is the total capacity of photovoltaic at node i.

[0051] The distribution transformer gateway power constraint in the distribution operation model is shown in formula (6):

[0052]

[0053] In order to reduce the influence of power fluctuation of the water and electricity management system on the upper-level power grid, the distribution transformer gateway power constraint is set, and the distribution transformer gateway is set as node 0. In formula (6): 0,max , P 0,min are respectively the upper and lower limit values of the active power of the distribution transformer gateway; Q 0,max , Q 0,min are respectively the upper and lower limit values of the reactive power of the distribution transformer gateway.

[0054] The cold storage load model is included in the distribution operation model, and the cold storage load model is used to control the operation of the cold storage system. The cold storage system has thermal inertia and can be equivalent to a virtual battery energy storage device. The cold storage load model can be shown in formula (7):

[0055]

[0056] In formula (7): x i,t is the equivalent energy storage state of charge of the cold storage at the distribution network node i; is the equivalent energy storage charging and discharging power of the cold storage; T t out , and T i set are respectively the outdoor temperature, indoor temperature and set temperature of the cold storage; S i,t and P iAC ,rated respectively are the start-stop state and the rated power of the cold storage; is the reference power when the cold storage is in steady state operation; i , gamma i respectively are the power attenuation coefficient and the charge-discharge efficiency of the cold storage load virtual energy storage; i , C i , eta i respectively are the equivalent thermal resistance, the equivalent thermal capacity and the energy efficiency ratio of the cold storage; sigma i is the dead zone temperature of the cold storage, i.e. the acceptable temperature variation range of the agricultural products in the cold storage is [T i set - sigma i , T i set + sigma i ]; and Delta t is the scheduling time interval.

[0057] On the basis of the above technical solution, in order to improve the model solving efficiency, the power distribution operation model can also be convexified, for example, the second-order cone method is used to relax transform the model for the constraint condition of the power parameter in the power distribution system, i.e. the square of the voltage and current is replaced by a variable, i.e. and the power equation constraint is relaxed into a second-order cone constraint form, such as

[0058]

[0059] S130, processing the second operation information and the third operation information based on the pre-constructed water supply operation model, and updating the second operation information.

[0060] Considering that the water-electricity coupling system also has a demand for the water source in the water supply system, in order to meet the water demand of the water-electricity coupling system, the corresponding water demand can be determined through the third operation information of the water-electricity coupling system in the process of operation of the water supply system, so as to update the second operation information in combination with the second operation information.

[0061] In actual application, the water supply operation model can be pre-constructed to support the operation of the water supply system. The second operation information and the third operation information can be input into the water supply operation model, and the second operation information is adjusted in combination with the third operation information, so that the adjusted second operation information can meet the demand of the user for electricity, can meet the demand of the water-electricity coupling system for electricity, and can also ensure the minimization of the electricity cost.

[0062] In the embodiment, the second operation information is updated based on the second operation information and the third operation information and the pre-constructed water supply operation model, and the second operation information is updated by determining the second constraint condition of the water supply operation model and constraining the second operation information based on the second constraint condition when the second operation information is updated based on the water supply operation model.

[0063] In the embodiment, the second constraint condition corresponding to the water supply operation model can be set in advance, and the second operation information is constrained based on the second constraint condition when the second operation information is updated based on the second operation information and the third operation information and the water supply operation model, so as to obtain the updated second operation information. Optionally, the second constraint condition includes a constraint condition for operation of the water regulating structure in the water supply system and a constraint condition for operation of the water distribution network in the water supply system.

[0064] For example, referring to Figure 3 , Figure 3 The water supply system can be represented as a structural schematic diagram of the water supply system, which includes a water distribution network, a water pressure regulating facility (pump station), a water regulating structure, a water source, and a user water load, etc. The water regulating structure refers to a water storage structure in the water distribution network for regulating water volume or ensuring water pressure, which has the ability of energy storage and water storage. The water supply operation model for controlling operation of the water regulating structure is shown in formula (8):

[0065]

[0066] wherein: Vm(t) and h m(t) are respectively the capacity and the water head of the regulating structure at node m at time t in the water distribution network; Q m(t) is the water flow into and out of the regulating structure at node m; Am is the cross-sectional area of the regulating structure at node m; Vm0 is the initial capacity of the regulating structure; Vmax and Vmin are respectively the upper limit and the lower limit of the capacity of the regulating structure. In the technical solution provided by the present application, the influence of the water level of the clean water pool on the pressure of the pipe network is not considered; it is considered that the water inlet of the water tank is at the top thereof, and the water level of the water tank only affects the water pressure of the downstream nodes.

[0067] The constraint condition for operation of the water distribution network includes:

[0068]

[0069]

[0070]

[0071] wherein: H m,t , hm,t respectively, are water pressure and elevation of node m at time t; is pipe frictional resistance; q nm,t is water flow from node m to node n; set N in (m) is a set of head nodes of pipes with m as the end node in the water distribution network; set N out (m) is a set of end nodes of pipes with m as the head node in the water distribution network; respectively, are water source, regular water load flow and electric water heating system water demand connected to node m; H max , H min respectively, are upper and lower limits of water pressure of nodes with water demand greater than 0 in the water distribution network, and the lower limit of water pressure is 0 if the water demand of a node is 0; q nm,max , q nm,min are maximum and minimum flow rates of pipe nm. Equation (9) is a water head loss equation along pipes in the water distribution network; equation (10) is a flow balance equation for nodes in the water supply system; and equation (11) is a safety constraint for operation of the water distribution network.

[0072] On the basis of the above technical solution, in order to improve the solving efficiency of the model, the water supply operation model can also be convexified, for example, the non-convex constraint condition of the water supply operation model exists in the water head loss constraint along the water supply pipe, and the optimization model containing the non-convex constraint is difficult to solve directly. Therefore, equation (9) can be convexified by using an approximate linearization and convex relaxation method.

[0073] In S140, the first operation information, the second operation information and the third operation information are processed based on the water-electricity coupling operation model pre-constructed, and the third operation information is updated.

[0074] In actual application, the first operation information, the second operation information and the third operation information can be input into the water-electricity coupling operation model, and the third operation information is adjusted in combination with the first operation information and the second operation information, so that the adjusted third operation information can meet the demand for electricity and water, and can also ensure minimization of the cost of electricity and water.

[0075] In this embodiment, the first operation information, the second operation information and the third operation information are processed based on the water-electricity coupling operation model pre-constructed, and the third operation information is updated, including: determining a third constraint condition of the water-electricity coupling operation model; and when the first operation information, the second operation information and the third operation information are processed based on the water-electricity coupling operation model to update the third operation information, the third operation information is constrained based on the third constraint condition to obtain the updated third operation information.

[0076] In the embodiment, the third constraint condition corresponding to the water-electricity coupling operation model can be preset, and the third operation information can be constrained by the third constraint condition to obtain updated third operation information in the process of updating the third operation information. Optionally, the third constraint condition includes but is not limited to a constraint condition for operation of a hydropower station in the water-electricity coupling system, a constraint condition for a water distribution pump station in the water-electricity coupling system, and a constraint condition for operation of an electric water heating system in the water-electricity coupling system.

[0077] For example, the water-electricity coupling operation model includes a power generation function determined based on power generation characteristics of the hydropower station, and the power generation function is shown in formula (12):

[0078]

[0079] In formula (12): Pj is the active power output of the hydropower station located at the power grid node j, and subscript j represents a position in the power grid; g is the product of the gravitational acceleration and the power generation efficiency of the hydropower station at the node j; Qj is the effective flow of the hydropower station located at the power grid node j for power generation, and also provides water source for the water plant located at the water distribution grid node m; Hj is the effective water head; Qj is the reactive power output of the hydropower station; pfj is the power factor of the hydropower station, and the adjustment range is T is the daily scheduling period; Qj is the maximum power generation flow of the hydropower station.

[0080] The constraint condition for the operation of the hydropower station is shown in formula (13):

[0081]

[0082] In formula (13): Wj is the abandoned water flow of the hydropower station at the power grid node j, and the power generation capacity of the hydropower station in the non-flood season often obeys the needs of irrigation and water supply, and generally does not abandon water; Qj is the irrigation flow and the maximum irrigation flow; Qj is the minimum ecological flow downstream of the hydropower station; Qj is the maximum total drainage and total irrigation allowed in the daily scheduling period of the hydropower station in the non-flood season; Qj is the maximum change amount of the effective power generation flow for increasing and decreasing the power generation power of the hydropower station.

[0083] The water-electricity coupling operation model also includes a water power function determined based on the hydraulic characteristics of the pump station in the water supply system, and the water power function is shown in formula (14):

[0084]

[0085] In formula (14): is the head of the variable frequency pump p at time t; is the flow of the water pump p at time t; ω p,t is the speed ratio of the variable frequency pump p at time t; a p , b p is the fitting coefficient of the variable frequency pump; ω p,max , ω p,min are the upper and lower limits of the speed ratio of the variable frequency pump p, respectively; are the upper and lower limits of the flow in the high-efficiency operation interval of the variable frequency pump p, respectively; is the start-stop state of the water pump p at time t.

[0086] The water-electricity coupling operation model also includes a power consumption function determined based on the power consumption characteristics of the pump station in the water supply system. The power consumption function is shown in formula (15):

[0087]

[0088] In formula (15): is the electric power consumed by the water pump p at time t; ρ is the density of water; g is the acceleration of gravity; is the water pump efficiency, which can be considered constant under the constraint of formula (10).

[0089] The water-electricity coupling operation model also includes an electric hot water function determined based on the working characteristics of the electric hot water system, which is composed of an electric boiler and a heat storage water tank and provides heat load and hot water supply for the water-electricity management system. The heat storage water tank and the electric boiler exchange heat through a heat exchanger. The electric hot water function is shown in formula (16):

[0090]

[0091] In formula (16): is the heat supplied by the electric hot water system powered by the power distribution network node j and supplied with water by the water distribution network node m; is the heat demand of the electric hot water system at the power distribution network node j and the water distribution network node m; is the electric-heat conversion efficiency of the electric boiler; is the active power consumed by the electric boiler; are the heat release and heat storage of the heat storage water tank, respectively; are the user heat load and hot water load, respectively; C w , ρ w are the specific heat capacity and bulk density of water, respectively; T t WT are the water temperature of the electric boiler and the water temperature of the water supply system pipeline, respectively; δ HT The heat storage capacity and self-loss coefficient of the hot water storage tank are given, with the maximum heat storage capacity being... These are the volume and outlet water temperature of the electric boiler, respectively. U EB These are the self-loss coefficient and surface area of ​​the electric boiler, respectively.

[0092] Based on the above technical solutions, the hydro-electric coupling operation model can also be made convex. For example, the non-convex constraints of the hydro-electric coupling operation model are the hydraulic characteristics and power consumption characteristics of the pump, i.e., the hydraulic function and the power consumption function. For the hydraulic function and the power consumption function, the feasible solution can be derived using the determined pump power curve parameters. Substituting the values ​​into the hydraulic function, we can solve the quadratic equation to obtain the pump speed. The only solution is that the hydraulic characteristic constraint of the pump can be transformed into a convex quadratic constraint as shown in formula (17).

[0093]

[0094] In formula (17): This defines the minimum head required to ensure normal system operation when the pumping station is in operation. A piecewise linear approximation method using bivariate functions is employed, where the function values ​​of a feasible solution can be represented by a weighted linear combination of the function values ​​calculated at the vertices of the corresponding triangle. After convexifying the hydroelectric coupling operation model, the original mixed-integer nonlinear problem can be transformed into a mixed-integer convex quadratic constraint problem, improving solution efficiency.

[0095] S150. The update objective is to minimize the objective function so that the hydropower management system can operate based on the updated operating information.

[0096] The objective function is related to energy costs, which include electricity and water consumption.

[0097] In this embodiment, considering the uncertainties of photovoltaic output, day-ahead electricity price, and real-time electricity price, the optimal scenario can be generated by using Latin hypercube sampling and K-Means clustering scenario reduction technology, and a hydropower management system based on Conditional Value at Risk (CVaR) can be established. The day-ahead stage is planned and global, and the scheduling decisions and the state quantities of the water supply system are consistent in multiple scenarios. The day-ahead scheduling decision quantities include the electricity purchased from the upper-level power grid and the start and stop status of the water pumps. On this basis, the intraday scheduling takes certain adjustment measures to achieve the economic operation of the hydropower management system in various scenarios while satisfying the balance of electricity and water supply and demand. In order to ensure that the hydropower management system can meet its own energy demand by purchasing electricity in the power market, the calculation function of the electricity purchased by the hydropower management system and the energy cost is shown in formula (18):

[0098]

[0099] In formula (18): C Cost is the energy cost of the hydro-thermal management system; are the day-ahead market electricity price and the real-time market electricity price, respectively; P t DA , P t IN are the electricity purchasing power of the hydro-thermal management system in the day-ahead market and the real-time market, respectively; is the deviation outside income return declared by the hydro-thermal management system in the day-ahead market; δ is the allowed deviation ratio, that is, the electricity purchasing amount of the hydro-thermal management system in the day-ahead market cannot exceed 1±δ times the actual energy consumption.

[0100] The uncertainty considered based on formula (18) includes three parts of the day-ahead electricity price, the real-time electricity price and the photovoltaic output, and a hydro-thermal management system based on CVaR can be established, and the objective function of the hydro-thermal management system is shown in formula (19):

[0101]

[0102] In formula (19): C is the comprehensive energy cost of the hydro-thermal management system based on CVaR; C CVaR is the CVaR of the energy optimization of the hydro-thermal management system; λ is the risk aversion factor; w and W are the scene number and the total number of scenes, respectively; p w is the probability of scene w; is the energy cost of the hydro-thermal management system corresponding to scene w; ξ is an auxiliary decision variable introduced for calculating CVaR, and the optimal value thereof is the risk value VaR; β is the confidence level; expression

[0103] It should be noted that the above S120 to S140 can be executed in parallel, and the above sequence is only the sequence for explaining the technical solutions in each step, and is not the execution sequence of each step. It can be understood that when updating the first operation information and the second operation information, the power distribution operation model and the water supply operation model can use the third operation information updated in real time by the water and electricity coupling system; when updating the third operation information, the water and electricity coupling system can use the first operation information updated in real time by the power distribution operation model and the second operation information updated in real time by the water supply operation model, and the three model systems cooperate with each other. In the process of updating the operation information of the water and electricity management system, the comprehensive energy consumption cost is calculated by solving the operation information through the objective function, and the comprehensive energy consumption cost is minimized, that is, when the total energy consumption cost in the objective function reaches the minimum, the final operation information is obtained and given to the water and electricity management system, so that the water and electricity management system works based on the final operation information, realizes the minimum total energy consumption cost, and ensures the basic demand for electricity and water. At the same time, by the basic demand for energy and water, the controllable resources are fully utilized, and the coupling of electricity-water resources is considered, so as to improve the utilization rate of water and electricity resources and reduce the cost consumption. The randomness of electricity price and photovoltaic is also considered, and the objective function based on CVaR is established, which provides support for the energy optimization of the water and electricity management system, and realizes the technical effect of reducing the total energy consumption cost.

[0104] The technical scheme of the embodiment is characterized in that: first running information corresponding to a power distribution system, second running information corresponding to a water supply system, and third running information corresponding to a water-electricity coupling system in a current scheduling period are acquired; the first running information and the third running information are processed based on a pre-constructed power distribution operation model, and the first running information is updated; the second running information and the third running information are processed based on a pre-constructed water supply operation model, and the second running information is updated; the first running information, the second running information, and the third running information are processed based on a pre-constructed water-electricity coupling operation model, and the third running information is updated; and the minimum objective function is taken as an update target, so that the water-electricity management system works based on the updated running information, thereby solving the problem that in the prior art, water and electricity are allocated according to demand, resulting in low utilization of water and electricity resources and high allocation cost, and achieving the following effects: the first running information, the second running information, and the third running information corresponding to the power distribution system, the water supply system, and the water-electricity coupling system in the current scheduling period are monitored, and then the first running information, the second running information, and the third running information are updated synchronously in the processes of processing the first running information and the third running information based on the power distribution operation model, processing the second running information and the third running information based on the water supply operation model, and processing the first running information, the second running information, and the third running information based on the water-electricity coupling operation model, so that the updated running information is obtained at the minimum energy consumption cost, and the water-electricity management system is enabled to work based on the running information, thereby ensuring the basic demand for electricity and water while minimizing the total energy consumption cost, and improving the utilization rate of water and electricity resources through water-electricity coupling.

[0105] Embodiment Two

[0106] Figure 4 FIG. 1 is a structural schematic diagram of a scheduling device applied to a water-electricity management system according to Embodiment Two of the present application. The water-electricity management system includes a water supply system, a power distribution system, and a water-electricity coupling system. As shown in FIG. 1, the device includes a system running information acquisition module 210, a first update module 220, a second update module 230, a third update module 240, and a minimization module 250. Figure 4

[0107] The system running information acquisition module 210 is configured to acquire system running information of the water-electricity management system in a current scheduling period, wherein the system running information includes first running information corresponding to the power distribution system, second running information corresponding to the water supply system, and third running information corresponding to the water-electricity coupling system.

[0108] The first update module 220 is configured to process the first running information and the third running information based on a pre-constructed power distribution operation model, and update the first running information.​

[0109] The second updating module 230 is configured to update the second operation information based on the pre-constructed water supply operation model and the processing of the second operation information and the third operation information.

[0110] The third updating module 240 is configured to update the third operation information based on the pre-constructed water and electricity coupling operation model and the processing of the first operation information, the second operation information and the third operation information.

[0111] The minimization module 250 is configured to take the minimization objective function as the updating target, so that the water and electricity management system works based on the updated operation information, wherein the objective function is associated with the energy cost.

[0112] The technical scheme of the embodiment is to obtain the first operation information corresponding to the power distribution system, the second operation information corresponding to the water supply system and the third operation information corresponding to the water and electricity coupling system in the current scheduling period; update the first operation information based on the pre-constructed power distribution operation model and the processing of the first operation information and the third operation information; update the second operation information based on the pre-constructed water supply operation model and the processing of the second operation information and the third operation information; update the third operation information based on the pre-constructed water and electricity coupling operation model and the processing of the first operation information, the second operation information and the third operation information; take the minimization objective function as the updating target, so that the water and electricity management system works based on the updated operation information, thereby solving the problem in the prior art that the water and electricity allocation is based on the demand, resulting in low utilization of water and electricity resources and high allocation cost, and realizing that the first operation information is updated, the second operation information is updated and the third operation information is updated in the process of processing the first operation information and the third operation information based on the power distribution operation model, processing the second operation information and the third operation information based on the water supply operation model and processing the first operation information, the second operation information and the third operation information based on the water and electricity coupling operation model, obtaining the updated operation information at the minimum energy cost, and making the water and electricity management system work based on the operation information, so as to ensure the basic demand for electricity and water while minimizing the total energy cost, and improve the utilization rate of water and electricity resources through the water and electricity coupling mode.

[0113] On the basis of the above device, the first updating module 220 can optionally include a first constraint condition determining unit and a first updating unit.

[0114] The first constraint condition determining unit is configured to determine the first constraint condition of the power distribution operation model.

[0115] The first updating unit is configured to update the first operation information based on the power distribution operation model, and to constrain the first operation information based on the first constraint condition to obtain updated first operation information.

[0116] In the above device, the first constraint condition comprises a constraint condition for a power parameter in the power distribution system, a constraint condition for photovoltaic output in the power distribution system, and a constraint condition for operation of a cold storage system in the power distribution system; and the power parameter comprises at least one of current, voltage, power, load, resistance, and reactance.

[0117] In the above device, the second updating module 230 comprises a second constraint condition determining unit and a second updating unit.

[0118] The second constraint condition determining unit is configured to determine a second constraint condition of the water supply operation model.

[0119] The second updating unit is configured to update the second operation information based on the water supply operation model, and to constrain the second operation information based on the second constraint condition to obtain updated second operation information.

[0120] In the above device, the second constraint condition comprises a constraint condition for operation of a water regulating structure in the water supply system and a constraint condition for operation of a water distribution network in the water supply system.

[0121] In the above device, the third updating module 240 comprises a third constraint condition determining unit and a third updating unit.

[0122] The third constraint condition determining unit is configured to determine a third constraint condition of the water-electricity coupling operation model.

[0123] The third updating unit is configured to update the third operation information based on the water-electricity coupling operation model, and to constrain the third operation information based on the third constraint condition to obtain updated third operation information.

[0124] In the above device, the third constraint condition comprises a constraint condition for operation of a hydropower station in the water-electricity coupling system, a constraint condition for a water distribution pump station in the water-electricity coupling system, and a constraint condition for operation of an electric water heating system in the water-electricity coupling system.

[0125] The scheduling device applied to the water and electricity management system provided by the embodiment of the present application can execute the scheduling method applied to the water and electricity management system provided by any embodiment of the present application, and has the function modules and beneficial effects corresponding to the execution method.

[0126] Embodiment three

[0127] Figure 5 A structural schematic diagram of an electronic device 10 that can be used to implement embodiments of the present application is shown. The electronic device is intended to represent various forms of digital computers, such as laptops, desktops, tablets, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. The electronic device can also represent various forms of mobile devices, such as personal digital processors, cellular telephones, smart phones, wearable devices (e.g., headsets, glasses, watches, etc.), and other similar computing devices. The components shown here, their connections and relationships, and their functions, are meant to be examples only, and are not intended to limit the implementations of the present application described and / or claimed in this document.

[0128] As Figure 5 shown, the electronic device 10 includes at least one processor 11, and a memory, such as a read-only memory (ROM) 12, a random access memory (RAM) 13, etc., which is communicatively connected to the at least one processor 11, wherein the memory stores a computer program that can be executed by the at least one processor. The processor 11 can execute various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 12 or the computer program loaded from the storage unit 18 into the random access memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the electronic device 10 can also be stored. The processor 11, the ROM 12, and the RAM 13 are connected to each other through a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0129] A plurality of components in the electronic device 10 are connected to the I / O interface 15, including: an input unit 16, such as a keyboard, a mouse, etc.; an output unit 17, such as various types of displays, speakers, etc.; a storage unit 18, such as a magnetic disk, an optical disk, etc.; and a communication unit 19, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 19 allows the electronic device 10 to exchange information / data with other devices through a computer network, such as the Internet, and / or various telecommunication networks.

[0130] The processor 11 can be various general and / or special purpose processing components with processing and computing capabilities. Some examples of the processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various specialized artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, and the like. The processor 11 performs various methods and processes described above, such as the scheduling method applied to the hydroelectric management system.

[0131] In some embodiments, the scheduling method applied to the hydroelectric management system can be implemented as a computer program tangibly embodied in a computer readable storage medium, such as the storage unit 18. In some embodiments, part or all of the computer program can be loaded and / or installed onto the electronic device 10 via the ROM 12 and / or the communication unit 19. When the computer program is loaded onto the RAM 13 and executed by the processor 11, one or more steps of the scheduling method applied to the hydroelectric management system described above can be performed. Alternatively, in other embodiments, the processor 11 can be configured to perform the scheduling method applied to the hydroelectric management system by any other suitable means, such as by means of firmware.

[0132] Various implementations of the systems and techniques described above can be realized in digital electronic circuitry, integrated circuitry, a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), a system on a chip (SOC), a programmable logic device (PLD), a computer hardware, firmware, software, and / or combinations thereof. These various implementations can include implementation in one or more computer programs that are executable and / or interpretable on a programmable system including at least one programmable processor, which can be special or general purpose, coupled to receive data and instructions from, and to transmit data and instructions to, a storage system, at least one input device, and at least one output device.

[0133] Computer programs used to implement the methods of the application can be written in any combination of one or more programming languages. These computer programs can be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the computer program, when executed, implements the functions / acts specified in the flowcharts and / or block diagrams. The computer program can be executed entirely on a machine, partially on a machine, partially on a machine as a stand-alone software package, and partially on a machine or a remote machine or a server.

[0134] In the context of the present application, a computer-readable storage medium can be a tangible medium that can contain or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. A computer-readable storage medium can include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium can be a machine-readable signal medium. More specific examples of a machine-readable storage medium will include one or more lines of a program of instructions in a transitory signal, a portable computer diskette, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or Flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0135] To provide for interaction with a user, the systems and techniques described here can be implemented on an electronic device having a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user and a keyboard and a pointing device (e.g., a mouse or a trackball) by which the user can provide input to the electronic device. Other kinds of devices can be used to provide for interaction with a user as well; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form, including acoustic, speech, or tactile input.

[0136] The systems and techniques described here can be implemented in a computing system that includes a back end component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front end component (e.g., a user computer having a graphical user interface or a Web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such back end, middleware, or front end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include a local area network (LAN), a wide area network (WAN), blockchain network, and the Internet.

[0137] The computing system can include clients and servers. A client and server are generally remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. The server can be a cloud server, also known as a cloud computing server or cloud host, which is a host product in the cloud computing service system, to solve the defects of large management difficulty and weak business scalability in traditional physical host and VPS service.

[0138] It should be understood that the various forms of flow shown above can be reordered, added to, or have steps deleted. For example, the steps described in the present application can be performed in parallel, in series, or in a different order, as long as the desired results of the technical solutions of the present application can be achieved, which are not limited herein.

[0139] The above detailed description does not constitute a limitation on the protection scope of the present application. Those skilled in the art should understand that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A scheduling method applied to a water power management system, characterized in that, The water and electricity management system comprises a water supply system, a power distribution system and a water and electricity coupling system; the method comprises: obtaining system operation information of the water and electricity management system in a current scheduling period; wherein the system operation information comprises first operation information corresponding to the power distribution system, second operation information corresponding to the water supply system and third operation information corresponding to the water and electricity coupling system; processing the first operation information and the third operation information based on a pre-constructed power distribution operation model, and updating the first operation information; processing the second operation information and the third operation information based on a pre-constructed water supply operation model, and updating the second operation information; processing the first operation information, the second operation information and the third operation information based on a pre-constructed water and electricity coupling operation model, and updating the third operation information; taking a minimization objective function as an updating target, so that the water and electricity management system works based on the updated operation information; wherein the objective function is associated with energy consumption cost.

2. The method of claim 1, wherein, The processing of the first operation information and the third operation information based on the pre-constructed power distribution operation model, and the updating of the first operation information, comprise: determining a first constraint condition of the power distribution operation model; when the first operation information and the third operation information are processed based on the power distribution operation model, and the first operation information is updated, the first operation information is constrained based on the first constraint condition to obtain updated first operation information.

3. The method of claim 2, wherein, The first constraint condition comprises a constraint condition of an electric parameter in the power distribution system, a constraint condition of photovoltaic output in the power distribution system and a constraint condition of a cold storage system operation in the power distribution system; wherein the electric parameter comprises at least one of current, voltage, power, load, resistance and reactance.

4. The method of claim 1, wherein, The processing of the second operation information and the third operation information based on the pre-constructed water supply operation model, and the updating of the second operation information, comprise: determining a second constraint condition of the water supply operation model; when the second operation information and the third operation information are processed based on the water supply operation model, and the second operation information is updated, the second operation information is constrained based on the second constraint condition to obtain updated second operation information.

5. The method of claim 4, wherein, The second constraint condition comprises a constraint condition of a water regulating structure operation in the water supply system and a constraint condition of a water distribution network operation in the water supply system.

6. The method of claim 1, wherein, The processing of the first operation information, the second operation information and the third operation information based on the pre-constructed water and electricity coupling operation model, and the updating of the third operation information, comprise: determining a third constraint condition of the water and electricity coupling operation model; when the first operation information, the second operation information and the third operation information are processed based on the water and electricity coupling operation model, and the third operation information is updated, the third operation information is constrained based on the third constraint condition to obtain updated third operation information.

7. The method of claim 6, wherein, The third constraint condition comprises a constraint condition for operation of a hydropower station in the water-electricity coupling system, a constraint condition for a water distribution pump station in the water-electricity coupling system, and a constraint condition for operation of an electric water heating system in the water-electricity coupling system.

8. A dispatching device applied to a water power management system, characterized in that, The water-electricity management system comprises a water supply system, an electricity distribution system, and a water-electricity coupling system; and the device comprises: a system operation information acquisition module configured to acquire system operation information of the water-electricity management system in a current scheduling period, wherein the system operation information comprises first operation information corresponding to the electricity distribution system, second operation information corresponding to the water supply system, and third operation information corresponding to the water-electricity coupling system; a first updating module configured to update the first operation information by processing the first operation information and the third operation information based on a pre-constructed electricity distribution operation model; a second updating module configured to update the second operation information by processing the second operation information and the third operation information based on a pre-constructed water supply operation model; a third updating module configured to update the third operation information by processing the first operation information, the second operation information, and the third operation information based on a pre-constructed water-electricity coupling operation model; a minimization module configured to take a minimization objective function as an updating target, so that the water-electricity management system works based on the updated operation information, wherein the objective function is associated with energy consumption cost.

9. An electronic device, comprising: The electronic device comprises: at least one processor; and a memory connected to the at least one processor in communication; wherein the memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor to enable the at least one processor to execute the scheduling method for a water-electricity management system according to any one of claims 1-7.

10. A computer-readable storage medium, characterized in that, The computer readable storage medium stores computer instructions for enabling the processor to implement the scheduling method for a water-electricity management system according to any one of claims 1-7 when executed.

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