Power transmission control method, system and equipment of integrated energy base and medium

Abstract

The invention relates to the technical field of integrated energy base planning design and operation scheduling, and discloses a power transmission control method, system and device of an integrated energy base and a medium. The target parameters comprise a power transmission control parameter, wind-solar power generation power, thermal power characteristic parameters and thermal power operation parameters of the wind-solar power generation source in each sub-period in a future target period, and energy storage characteristic parameters of the energy storage power source; substituting the wind and light power generation power into the target function, and solving the target function by taking the power transmission control parameter, the thermal power characteristic parameter, the thermal power operation parameter and the energy storage characteristic parameter as first constraints to obtain the power generation power of the thermal power generation source, the charging and discharging power of the energy storage power supply and the abandoned power of the wind and light power generation source; the objective function comprises a power abandoning penalty function of the wind-solar power generation source and a power generation penalty function of the thermal power generation source; and controlling the wind-solar power generation source, the thermal power generation source and the energy storage power supply according to the solving result. The electric energy ratio of the wind-solar power generation source can be improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of integrated energy base planning, design and operation scheduling, and in particular to a power transmission control method, system, equipment and medium for an integrated energy base. Background Art

[0002] In order to promote the green and low-carbon transformation of energy, some integrated energy bases including wind and solar power sources, thermal power sources, and energy storage power sources usually require wind and solar power sources to transmit as much electricity as possible to the grid within a preset time, and only transmit electricity to the grid through thermal power sources when the electricity generated by wind and solar power sources cannot meet the electricity demand. However, in some integrated energy bases today, the proportion of electricity transmitted to the grid by thermal power sources is still too large, and the proportion of electricity transmitted to the grid by wind and solar power sources is still too small, which cannot meet the requirements of green power supply. Summary of the invention

[0003] In view of this, the embodiments of the present disclosure provide a power transmission control method, a power transmission control system, an electronic device and a computer-readable storage medium for an integrated energy base, which can increase the proportion of electric energy transmitted to the power grid by wind and solar power sources.

[0004] On one hand, the present disclosure provides a power transmission control method for an integrated energy base, wherein the integrated energy base includes a wind and solar power generation source, a thermal power generation source, and an energy storage power source; the method includes:

[0005] Obtaining target parameters required for power transmission control, the target parameters including power transmission control parameters of the integrated energy base, wind and solar power generation power of the wind and solar power generation source in each sub-period in the future target period, thermal power characteristic parameters and thermal power operation parameters of the thermal power generation source, and energy storage characteristic parameters of the energy storage power source;

[0006] Substituting the wind-solar power generation power into a preset objective function, taking one or more of the power transmission control parameter, the thermal power characteristic parameter, the thermal power operation parameter and the energy storage characteristic parameter as the first constraint, taking the maximum amount of electricity transmitted to the power grid within the target period as the goal, solving the objective function, and obtaining the power generation power of the thermal power source, the charging and discharging power of the energy storage power source and the power abandonment power of the wind-solar power source in each sub-period of the target period, wherein the objective function includes a power abandonment penalty function of the wind-solar power source and a power generation penalty function of the thermal power source;

[0007] According to the solution results, the wind and solar power generation source, the thermal power generation source and the energy storage power source are controlled.

[0008] Another aspect of the present disclosure provides a power transmission control system of a comprehensive energy base, wherein the comprehensive energy base includes a wind and solar power generation source, a thermal power generation source, and an energy storage power source; the system includes:

[0009] A parameter acquisition module is used to acquire target parameters required for power transmission control, wherein the target parameters include power transmission control parameters of the integrated energy base, wind and solar power generation power of the wind and solar power generation source in each sub-period in the future target period, thermal power characteristic parameters and thermal power operation parameters of the thermal power generation source, and energy storage characteristic parameters of the energy storage power source;

[0010] An objective function solving module is used to substitute the wind-solar power generation power into a preset objective function, take one or more of the power transmission control parameter, the thermal power characteristic parameter, the thermal power operation parameter and the energy storage characteristic parameter as the first constraint, take the maximum amount of electricity transmitted to the power grid within the target period as the goal, solve the objective function, and obtain the power generation power of the thermal power source, the charging and discharging power of the energy storage source and the power abandonment power of the wind-solar power source in each sub-period of the target period, wherein the objective function includes the power abandonment penalty function of the wind-solar power source and the power generation penalty function of the thermal power source;

[0011] A control module is used to control the wind and solar power generation source, the thermal power generation source and the energy storage power source according to the solution result.

[0012] Another aspect of the present disclosure further provides a computer-readable storage medium, wherein the computer-readable storage medium is used to store a computer program, and when the computer program is executed by a processor, the method described above is implemented.

[0013] Another aspect of the present disclosure provides an electronic device, which includes a processor and a memory, wherein the memory is used to store a computer program, and when the computer program is executed by the processor, the method described above is implemented.

[0014] In the technical solutions of some embodiments of the present disclosure, since the objective function includes the power abandonment penalty function of the wind and solar power sources and the power generation penalty function of the thermal power sources, the maximum amount of electricity transmitted to the power grid during the target period is taken as the goal, and the acquired wind and solar power generation power is substituted into the objective function. After solving the objective function, the power generation power of the thermal power source, the charging and discharging power of the energy storage power source, and the power abandonment power of the wind and solar power sources obtained in each sub-period of the target period can correspond to the scenario where the amount of abandoned electricity of the wind and solar power sources is small and the thermal power generation of the thermal power sources is small. In this way, after controlling the wind and solar power sources, the thermal power generation of the thermal power sources and the power storage power sources according to the solution of the objective function, the thermal power generation of the thermal power sources and the amount of abandoned electricity of the wind and solar power sources can be effectively reduced, thereby increasing the proportion of electricity transmitted to the power grid by the wind and solar power sources. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The features and advantages of the present disclosure will be more clearly understood by referring to the accompanying drawings, which are schematic and should not be construed as limiting the present disclosure in any way. In the accompanying drawings:

[0016] Figure 1 A schematic flow chart of a power transmission control method provided by some embodiments of the present disclosure is shown;

[0017] Figure 2 The power balance diagrams of some integrated energy bases in a typical week of small-scale new energy generation are shown;

[0018] Figure 3 The power balance diagram of some integrated energy bases in a typical week of new energy development is shown;

[0019] Figure 4 The power balance diagrams of some integrated energy bases in a typical week of new energy development are shown;

[0020] Figure 5 A schematic diagram of a module of a power transmission control system provided by an embodiment of the present disclosure is shown;

[0021] Figure 6 A schematic diagram of an electronic device provided by an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present disclosure.

[0023] The wind and solar power sources described in the present disclosure include wind power sources and photovoltaic power sources. Since wind and solar power sources are mainly based on wind energy and solar energy for power generation, they have less pollution to the environment and are therefore called green power sources. However, since wind energy and solar energy have random characteristics, the amount of electricity generated by wind and solar power sources every day is not fixed.

[0024] In order to promote the green and low-carbon transformation of energy, how to maximize the use of electricity generated by wind and solar power sources while ensuring the stability, economy and sustainability of power supply has become a new research direction. At present, some comprehensive energy bases including wind and solar power sources, thermal power sources and energy storage sources will divide the future target period into multiple sub-periods, and pre-determine the output power of wind and solar power sources and thermal power sources to the power grid and the charging and discharging power of energy storage sources in each sub-period through simulation. For example, the next year is divided into 52 sub-periods by week, and the 8760h time series production simulation is adopted. With the maximum total online power as the goal, the output power of wind and solar power sources and thermal power sources to the power grid and the charging and discharging power of energy storage sources are pre-determined in each week in the future. However, in these simulation methods, the constraints are not set reasonably, resulting in the proportion of electricity transmitted to the power grid by thermal power sources being too large, and the proportion of electricity transmitted to the power grid by wind and solar power sources being too small, which cannot meet the requirements of green power supply.

[0025] In view of this, the present disclosure provides a power transmission control method for a comprehensive energy base, which can reduce the proportion of electric energy transmitted to the power grid by thermal power generation sources and increase the proportion of electric energy transmitted to the power grid by wind and solar power generation sources, thereby meeting the requirements of green power supply. The power transmission control method can be applied to electronic devices. Electronic devices include but are not limited to control circuit boards, computers, servers, etc. Figure 1 , which is a flow chart of a power transmission control method provided in some embodiments of the present disclosure. Figure 1 In the embodiment, the power transmission control method comprises the following steps:

[0026] Step S11, obtaining the target parameters required for power transmission control, the target parameters including the power transmission control parameters of the integrated energy base, the wind and solar power generation power of the wind and solar power generation sources in each sub-period in the future target period, the thermal power characteristic parameters and thermal power operation parameters of the thermal power generation sources, and the energy storage characteristic parameters of the energy storage power source.

[0027] Specifically, the duration of the target period can be selected according to actual needs, such as the next year, the next month, or the next three years. The target period is allowed to be divided into multiple sub-periods. For example, the next year can be divided into 365 sub-periods based on days. In this embodiment, the target period is the next year, and the next year can be divided into 52 sub-periods (the last week is 8 days) based on weeks.

[0028] In some embodiments, based on the historical power generation data of the wind and solar power generation sources, the wind and solar power generation power of the wind and solar power generation sources in each sub-period in the future target period can be predicted by time series prediction and other methods.

[0029] The transmission control parameters are used to characterize the minimum power that the integrated energy base needs to output to the power grid and the maximum power that is allowed to be output to the power grid. Specifically, the transmission control parameters can be determined based on the capacity of the transmission channel of the integrated energy base, the maintenance time (i.e., the allowed usage time), etc.

[0030] Thermal power characteristic parameters are used to characterize the performance characteristics of thermal power generation sources in integrated energy bases, including but not limited to the number of installed units and single-unit capacity of thermal power generation sources. Among them, the number of installed units refers to the total number of thermal power generation sources in the integrated energy base; the single-unit capacity refers to the rated output power of a thermal power generation source when it works alone, and its unit can be megawatts or ten thousand kilowatts. Specifically, the number of installed units and other parameters of thermal power generation sources can be obtained from the actual deployment scale of the integrated energy base, and the single-unit capacity and other parameters of thermal power generation sources can be obtained from the product performance parameters of thermal power generation sources.

[0031] Thermal power operation parameters are used to characterize the operating characteristics of thermal power sources in comprehensive energy bases, including but not limited to the minimum technical output of thermal power sources, annual maintenance schedule, unit climbing constraints, etc. Among them, the minimum technical output refers to the minimum power generation required by the thermal power source to ensure the normal operation of the thermal power source. If the actual power generation of the thermal power source does not reach the minimum power generation, it may affect the normal operation of the thermal power source. The annual maintenance schedule refers to the time period for maintenance of the thermal power source within the target period. Specifically, the thermal power operation parameters can be obtained from the maintenance plan and product performance parameters of the thermal power source.

[0032] The energy storage characteristic parameters can characterize the performance characteristics of the energy storage power supply in the comprehensive energy base, including but not limited to the rated charging power, rated discharging power, maximum charging power, minimum charging power, charging efficiency, discharging efficiency, maximum energy storage capacity, comprehensive energy storage efficiency, etc. Specifically, the energy storage characteristic parameters can be obtained from the product performance parameters of the energy storage power supply.

[0033] Step S12, substituting the wind and solar power generation power into a preset objective function, taking one or more of the transmission control parameters, thermal power characteristic parameters, thermal power operation parameters and energy storage characteristic parameters as the first constraint, taking the maximum amount of electricity transmitted to the power grid within the target period as the goal, solving the objective function, and obtaining the power generation power of the thermal power source, the charging and discharging power of the energy storage power source and the power abandonment power of the wind and solar power source in each sub-period of the target period. The objective function includes the power abandonment penalty function of the wind and solar power source and the power generation penalty function of the thermal power source.

[0034] Specifically, in some embodiments, the objective function may be as shown in expression (1).

[0035]

[0036] Among them, F represents the amount of electricity transmitted from the integrated energy base to the power grid during the target period, T represents the number of sub-periods within the target period, and E t represents the total amount of electricity delivered to the power grid by the integrated energy base in the tth sub-period, represents the power abandonment penalty function of wind and solar power generation sources, α represents the power abandonment penalty coefficient of the power abandonment penalty function, represents the amount of abandoned electricity from wind and solar power generation in the tth sub-period, represents the power generation penalty function of the thermal power source, β represents the thermal power generation penalty coefficient of the power generation penalty function, It represents the thermal power generation of the thermal power source in the tth sub-period.

[0037] Furthermore, the total power E t It can be shown as expression (2).

[0038] E t =P t ·Δt (2)

[0039] Among them, P t It represents the total power output from the integrated energy base to the grid in the tth sub-period, and Δt represents the duration of the tth sub-period.

[0040] The above amount of abandoned It can be shown as expression (3).

[0041]

[0042] Among them, p cur,t represents the abandoned power of the wind and solar power generation source in the tth sub-period. In this application, p cur,t The value of is the absolute value of the abandoned power.

[0043] The above thermal power generation It can be shown as expression (4).

[0044]

[0045] Among them, p f,t It represents the power generated by the thermal power source in the tth sub-period.

[0046] Furthermore, the total power P t It can be expressed as expression (5):

[0047] P t =p w,t +p s,t +p f,t +p es,t -p cur,t (5)

[0048] Among them, p w,t represents the power generated by the wind power source in the tth sub-period, p s,t represents the power generated by the photovoltaic power source in the tth sub-period; p f,t represents the power generation of the thermal power source in the tth sub-period; p es,t Indicates the charging and discharging power of the energy storage power supply in the tth sub-period.

[0049] In expression (5), p w,t and p s,t can be collectively referred to as the wind and solar power generation power in step S11. w,t and p s,t Substituting into the above expressions (1) to (5), and taking one or more of the transmission control parameters, thermal power characteristic parameters, thermal power operation parameters and energy storage characteristic parameters as the first constraint, and taking the maximum amount of electricity delivered to the grid during the target period as the goal, it is possible to solve for the power generation power of the thermal power source, the charging and discharging power of the energy storage source and the power abandonment power of the wind and solar power source in each sub-period of the target period.

[0050] It should be noted that in the process of solving the objective function, one or more of the transmission control parameters, thermal power characteristic parameters, thermal power operation parameters and energy storage characteristic parameters are used as the first constraint to ensure that the duration of the integrated energy base transmitting electricity to the power grid is consistent with the duration of the power transmission channel being put into use, and to ensure that the wind and solar power generation sources, thermal power generation sources and energy storage sources are within the normal working range. In this way, the solution is prevented from exceeding the actual working capacity of the transmission channel, wind and solar power generation sources, thermal power generation sources and energy storage sources, and the objective accuracy of the solution is ensured.

[0051] In addition, it can be seen from the expression of the objective function that since the objective function includes the power abandonment penalty function of wind and solar power sources and the power generation penalty function of thermal power sources, when the amount of abandoned power of wind and solar power sources increases and the thermal power generation of thermal power sources increases, the amount of power F delivered to the power grid by the comprehensive energy base during the target period will decrease, and when the amount of abandoned power of wind and solar power sources decreases and the thermal power generation of thermal power sources decreases, the amount of power F delivered to the power grid by the comprehensive energy base during the target period will increase. According to this principle, taking the maximum amount of power delivered to the power grid during the target period as the goal, substituting the obtained wind and solar power generation power into the objective function, and solving the objective function to obtain the power generation power of the thermal power source, the charging and discharging power of the energy storage power source, and the power abandonment power of wind and solar power sources, can correspond to the scenario where the amount of abandoned power of wind and solar power sources is small and the thermal power generation of thermal power sources is small. In this way, after controlling the wind and solar power sources, thermal power sources and energy storage sources according to the solution results, the thermal power generation of thermal power sources and the amount of abandoned power of wind and solar power sources can be effectively reduced, thereby increasing the proportion of electricity transmitted to the power grid by wind and solar power sources.

[0052] In this embodiment, the Gurobi solver is used to solve the objective function.

[0053] Step S13, controlling the wind and solar power generation sources, the thermal power generation sources and the energy storage power sources according to the solution results.

[0054] In summary, in the technical solutions of some embodiments of the present disclosure, since the objective function includes the power abandonment penalty function of the wind and solar power sources and the power generation penalty function of the thermal power sources, the maximum amount of electricity transmitted to the power grid during the target period is taken as the goal, and the acquired wind and solar power generation power is substituted into the objective function. After solving the objective function, the power generation power of the thermal power source, the charging and discharging power of the energy storage power source, and the power abandonment power of the wind and solar power sources obtained in each sub-period of the target period can correspond to the scenario where the amount of abandoned electricity of the wind and solar power sources is small and the thermal power generation of the thermal power sources is small. In this way, after controlling the wind and solar power sources, the thermal power generation of the thermal power sources and the energy storage power sources according to the solution of the objective function, the thermal power generation of the thermal power sources and the amount of abandoned electricity of the wind and solar power sources can be effectively reduced, thereby increasing the proportion of electricity transmitted to the power grid by the wind and solar power sources.

[0055] The scheme of the present disclosure is further described below.

[0056] In some embodiments, considering the power shortage scenario, the total power P t It can be expressed as expression (6):

[0057] P t =p w,t +p s,t +pf,t +p es,t -p cur,t +p gap,t (6)

[0058] Among them, p gap,t It represents the power shortage of the comprehensive energy base in the tth sub-period.

[0059] The objective function may also include a power shortage penalty function of the integrated energy base. Specifically, the objective function including the power shortage penalty function may be as shown in expression (7).

[0060]

[0061] in, represents the power shortage penalty function of the comprehensive energy base, γ represents the power shortage penalty coefficient of the power shortage penalty function, It indicates the power shortage of the comprehensive energy base in the tth sub-period.

[0062] After adding the power shortage penalty function to the objective function, it means that in the solution process, the total output of the integrated energy base in each period is greater than the power transmission curve, which allows power shortages. In this way, the solution range can be expanded to obtain better solution results. For example, assuming that in the sub-periods t to t+4 in a certain power transmission ladder, the maximum power generation capacity of the integrated energy base in each period is [10,10,9,10,10] million kilowatts. Since in a power transmission ladder, the power transmitted to the power grid by the integrated energy base in each sub-period needs to be equal, therefore, if power shortages are not allowed, the optimal power transmission curve of the power transmission ladder should be [9,9,9,9,9]. In this case, in the periods t, t+1, t+3, and t+4, there may be wind and solar power abandonment due to the inability to reduce thermal power output, which increases the new energy abandonment rate and reduces the overall grid-connected power of the base. However, if power shortages are allowed in the integrated energy base, the optimal transmission curve of the transmission ladder should be [10,10,9,10,10]. Although a short-term power shortage occurs in the integrated energy base, the potential power abandonment rate of renewable energy can be greatly reduced. Moreover, through the power shortage penalty coefficient, the power abandonment is used as an elastic constraint for the solution, and the number of power shortage periods and the amount of power shortage can be controlled within an acceptable range, which is conducive to reducing the phenomenon of wind and solar power abandonment and increasing the utilization hours of the transmission channel. Therefore, the solution result is better.

[0063] In some embodiments, the target parameters also include a power shortage control parameter that indicates whether the integrated energy base allows power shortage. When the power shortage control parameter indicates that the integrated energy base does not allow power shortage, the target function may be as shown in the above expression (1); when the power shortage control parameter indicates that the integrated energy base allows power shortage, the target function may be as shown in the above expression (7).

[0064] By setting the power shortage control parameters, it is possible to control whether the objective function includes a power shortage penalty function according to actual needs, which has better applicability.

[0065] In some embodiments, the power shortage penalty function uses the power shortage power of the integrated energy base as an independent variable, which can be specifically shown as expression (8).

[0066]

[0067] When the power shortage control parameter indicates that the comprehensive energy base does not allow power shortage, the power shortage power (i.e., p gap,t ) is set to 0.

[0068] In some embodiments, the first constraint may specifically include constraints as shown in expressions (5), (6) and expressions (9) to (16):

[0069] P min ≤P t ≤P max (9)

[0070]

[0071] |p f,t -p f,t-1 |≤△p (11)

[0072]

[0073] Among them, P min represents the minimum power that the integrated energy base needs to output to the grid; P max It indicates the maximum power that the integrated energy base is allowed to output to the power grid; Indicates the minimum technical output of thermal power generation source, It represents the rated output of the thermal power source; △p represents the maximum power change allowed by the thermal power source between two adjacent time periods; Indicates the minimum charging power allowed by the energy storage power source; Indicates the maximum charging power allowed by the energy storage power source; Indicates the minimum discharge power allowed by the energy storage power supply; Indicates the maximum discharge power allowed by the energy storage power supply; Indicates the maximum energy storage capacity of the energy storage power supply; represents the energy storage capacity of the energy storage power supply in the tth sub-period; η ch Represents the charging efficiency of the energy storage power supply, η dis Indicates the discharge efficiency of the energy storage power supply; Indicates that the energy storage power source is in a charging state in the tth sub-period; Indicates that the energy storage power supply is in the discharging state in the tth sub-period, where: and The value of is 0 or 1. and The values ​​of are different.

[0074] In some embodiments, the target parameter also includes the minimum annual utilization hours of the transmission channel M. The above-mentioned solving of the target function may also include:

[0075] The objective function is solved by taking the minimum annual utilization hours M of the transmission channel as the second constraint.

[0076] Specifically, during the solution process, the actual utilization hours of the transmission channel may be greater than or equal to the minimum annual utilization hours M. In this way, the solution result is prevented from exceeding the normal working time of the transmission channel, thereby ensuring the accuracy of the solution result.

[0077] In some embodiments, the target parameter also includes the maximum number of power changes allowed when the integrated energy base transmits power to the power grid within a preset time period; the above-mentioned solving of the target function may also include:

[0078] The objective function is solved with the maximum number of power changes as the third constraint.

[0079] Specifically, the preset duration may be the above-mentioned target duration, or the duration of each sub-period within the target duration. The actual number of power changes when the integrated energy base transmits power to the power grid within the preset duration may be less than or equal to the maximum number of power changes. In this way, the problem of excessive power changes during the power transmission process of the integrated energy base can be avoided, and the stability of power transmission can be ensured.

[0080] In some embodiments, the target parameter also includes the minimum duration of power transmission of the integrated energy base to maintain constant power; the above-mentioned solving of the target function may also include:

[0081] The objective function is solved by taking the minimum power duration as the fourth constraint.

[0082] Specifically, when the integrated energy base supplies electricity to the grid at one of the power levels, its continuous duration may be greater than or equal to the minimum duration of the power level. For example, assuming that the minimum duration of the power level is 3 hours, then when the integrated energy base supplies electricity to the grid at power A, its continuous duration may not be less than 3 hours. After 3 hours, if the power supplied by the integrated energy base to the grid changes from power A to power B, then the continuous duration of power supplied to the grid at power B may not be less than 3 hours. In this way, the problem of too frequent power changes in the integrated energy base during power transmission can be avoided, ensuring the stability of power supply.

[0083] The scheme of the present disclosure is described below by taking a comprehensive energy base M including a wind power generation source, a photovoltaic power generation source, a thermal power generation source and an energy storage power source as an example.

[0084] In the comprehensive energy base M, the installed capacity of wind power generation is 8 million kilowatts, the installed capacity of photovoltaic power generation is 4 million kilowatts, the installed capacity of thermal power generation is 100*40,000 kilowatts, the installed capacity of energy storage is 2 million kilowatts*2 hours, the comprehensive efficiency of energy storage is 90%, the maximum transmission capacity of the transmission channel is 8 million kilowatts, the minimum utilization rate of the channel is 10%, the maximum number of power changes is 5, the minimum power duration is 3 hours, the minimum annual utilization hours of the transmission channel is 4500 hours, and the power shortage control parameters characterize the comprehensive energy base. The allowable power shortage and power abandonment penalty coefficient α is 1.5, the thermal power generation penalty coefficient β is 1.2, and the power shortage penalty coefficient γ is 5.

[0085] By adopting the 8760h time series production simulation method, the power generation power of the thermal power source, the charging and discharging power of the energy storage power source, and the abandoned power of the wind and solar power source in each sub-period of the target period are obtained. After controlling the wind and solar power sources, thermal power sources, and energy storage sources according to the solution results, it can be learned through statistics that the annual total online power of the comprehensive energy base M is 36.56 billion kilowatts, the annual utilization hours of the transmission channel are 4569h, the abandoned power rate of the wind and solar power source is 1.89%, the annual proportion of electric energy transmitted to the power grid by the thermal power source is 31.48%, the annual utilization hours of the thermal power source are 2877 hours, and the system power shortage rate is 0%. It can be seen that the transmission control method provided by the present disclosure can effectively increase the proportion of electric energy transmitted to the power grid by the wind and solar power source, reduce the proportion of electric energy transmitted to the power grid by the thermal power source, and ensure the proportion of green electricity transmitted to the power grid by the comprehensive energy base M.

[0086] In order to more fully illustrate the beneficial effects of the disclosed method, Figures 2 to 4 .in, Figure 2 This is the power balance diagram of the integrated energy base M in a typical week of new energy small-scale development. Figure 3 This is the power balance diagram of a typical week for the integrated energy base M in new energy. Figure 4 This is the power balance diagram of the integrated energy base M in a typical week of new energy development. Figures 2 to 4 It can be seen that no matter it is a typical week of small-scale new energy generation, a typical week of medium-scale new energy generation or a typical week of large-scale new energy generation, the proportion of electric energy transmitted to the grid by thermal power generation sources is relatively low, and the proportion of electric energy transmitted to the grid by wind and solar power generation sources is relatively high.

[0087] Combined with reference Figure 5 , which is a module diagram of a power transmission control system provided by an embodiment of the present disclosure. Figure 5 In the power transmission control system, the power transmission control system includes:

[0088] The parameter acquisition module is used to obtain the target parameters required for power transmission control, including the power transmission control parameters of the integrated energy base, the wind and solar power generation power of each sub-period in the future target period, the thermal power characteristic parameters and thermal power operation parameters of the thermal power generation source, and the energy storage characteristic parameters of the energy storage source;

[0089] An objective function solving module is used to substitute the wind and solar power generation power into a preset objective function, take one or more of the transmission control parameters, thermal power characteristic parameters, thermal power operation parameters and energy storage characteristic parameters as the first constraint, take the maximum amount of electricity transmitted to the power grid within the target period as the goal, solve the objective function, and obtain the power generation power of the thermal power source, the charging and discharging power of the energy storage source and the abandoned power of the wind and solar power source in each sub-period of the target period. The objective function includes the abandoned power penalty function of the wind and solar power source and the power generation penalty function of the thermal power source;

[0090] The control module is used to control the wind and solar power generation sources, thermal power generation sources and energy storage power sources according to the solution results.

[0091] Combined with reference Figure 6 , is a schematic diagram of an electronic device provided by an embodiment of the present disclosure. The electronic device includes a processor and a memory, the memory is used to store a computer program, and when the computer program is executed by the processor, the above method is implemented.

[0092] The processor may be a central processing unit (CPU). The processor may also be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or a combination of the above chips.

[0093] As a non-transitory computer-readable storage medium, the memory can be used to store non-transitory software programs, non-transitory computer executable programs and modules, such as program instructions / modules corresponding to the method in the embodiment of the present disclosure. The processor executes various functional applications and data processing of the processor by running the non-transitory software programs, instructions and modules stored in the memory, that is, implementing the method in the above method embodiment.

[0094] The memory may include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required for at least one function; the data storage area may store data created by the processor, etc. In addition, the memory may include a high-speed random access memory, and may also include a non-transitory memory, such as at least one disk storage device, a flash memory device, or other non-transitory solid-state storage device. In some embodiments, the memory may optionally include a memory remotely disposed relative to the processor, and these remote memories may be connected to the processor via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0095] An embodiment of the present disclosure further provides a computer-readable storage medium, where the computer-readable storage medium is used to store a computer program. When the computer program is executed by a processor, the above method is implemented.

[0096] Although the embodiments of the present disclosure have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present disclosure, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A power transmission control method for an integrated energy base, characterized in that: The comprehensive energy base includes a wind and solar power generation source, a thermal power generation source and an energy storage power source; the method includes: Obtaining target parameters required for power transmission control, the target parameters including power transmission control parameters of the integrated energy base, wind and solar power generation power of the wind and solar power generation source in each sub-period in the future target period, thermal power characteristic parameters and thermal power operation parameters of the thermal power generation source, and energy storage characteristic parameters of the energy storage power source; Substituting the wind-solar power generation power into a preset objective function, taking one or more of the power transmission control parameter, the thermal power characteristic parameter, the thermal power operation parameter and the energy storage characteristic parameter as the first constraint, taking the maximum amount of electricity transmitted to the power grid within the target period as the goal, solving the objective function, and obtaining the power generation power of the thermal power source, the charging and discharging power of the energy storage power source and the power abandonment power of the wind-solar power source in each sub-period of the target period, wherein the objective function includes a power abandonment penalty function of the wind-solar power source and a power generation penalty function of the thermal power source; According to the solution results, the wind and solar power generation source, the thermal power generation source and the energy storage power source are controlled.

2. The method according to claim 1, characterized in that The objective function also includes a power shortage penalty function of the integrated energy base, and the power shortage penalty function uses the power shortage power of the integrated energy base as an independent variable, and the target parameter also includes a power shortage control parameter characterizing whether the integrated energy base allows power shortage; the method also includes: When the power shortage control parameter indicates that the integrated energy base does not allow power shortage, the power shortage power in the power shortage penalty function is set to 0.

3. The method according to claim 2, characterized in that The wind and solar power generation sources include wind power generation sources and photovoltaic power generation sources; When the power shortage control parameter indicates that the integrated energy base does not allow power shortage, the objective function is as follows: When the power shortage control parameter indicates that the comprehensive energy base allows power shortage, the objective function is as follows: Wherein, F represents the amount of electricity delivered by the integrated energy base to the power grid during the target period, T represents the number of sub-periods within the target period, and E t represents the total amount of electricity delivered by the integrated energy base to the power grid in the tth sub-period, represents the power abandonment penalty function of the wind and solar power generation source, α represents the power abandonment penalty coefficient of the power abandonment penalty function, represents the amount of abandoned electricity of the wind and solar power generation source in the tth sub-period, represents the power generation penalty function of the thermal power generation source, β represents the thermal power generation penalty coefficient of the power generation penalty function, represents the thermal power generation of the thermal power source in the t-th sub-period, represents the power shortage penalty function of the comprehensive energy base, the γ represents the power shortage penalty coefficient of the power shortage penalty function, the It indicates the power shortage of the comprehensive energy base in the tth sub-period.

4. The method according to claim 1, characterized in that The wind and solar power generation source includes a wind power generation source and a photovoltaic power generation source, and the wind and solar power generation power includes the power generation power of the wind power generation source and the power generation power of the photovoltaic power generation source; the first constraint specifically includes the following constraints: P t =p w,t +p s,t +p f,t +p es,t -p cur,t +p gap,t P min ≤P t ≤P max |p f,t -p f,t-1 |≤△p Among them, P t represents the total power output of the integrated energy base to the power grid in the tth sub-period; p w,t represents the power generation of the wind power source in the tth sub-period, p s,t represents the power generation of the photovoltaic power source in the tth sub-period; p f,t represents the power generation of the thermal power source in the tth sub-period; p es,t represents the charging and discharging power of the energy storage power supply in the tth sub-period; p cur,t represents the abandoned power of the wind and solar power generation source in the tth sub-period; p gap,t represents the power shortage of the integrated energy base in the tth sub-period, P min represents the minimum power that the integrated energy base needs to output to the power grid; P max Indicates the maximum power that the integrated energy base is allowed to output to the power grid; represents the minimum technical output of the thermal power source, represents the rated output of the thermal power generating source; Δp represents the maximum power variation allowed by the thermal power generating source in two adjacent time periods; Indicates the minimum charging power allowed by the energy storage power source; Indicates the maximum charging power allowed by the energy storage power source; Indicates the minimum discharge power allowed by the energy storage power supply; Indicates the maximum discharge power allowed by the energy storage power supply; Indicates the maximum energy storage capacity of the energy storage power supply; represents the storage energy of the energy storage power supply in the tth sub-period; η ch represents the charging efficiency of the energy storage power supply, η dis Indicates the discharge efficiency of the energy storage power supply; Indicates that the energy storage power source is in a charging state in the tth sub-period; Indicates that the energy storage power supply is in a discharging state in the tth sub-period, wherein, and The value of is 0 or 1. and The values ​​of are different.

5. The method according to claim 1, characterized in that The target parameters also include the minimum annual utilization hours M of the transmission channel; The solving the objective function comprises: The objective function is solved by taking the minimum annual utilization hours M of the transmission channel as the second constraint.

6. The method according to claim 1, characterized in that The target parameters also include the maximum number of power changes allowed when the integrated energy base transmits electricity to the power grid within a preset time period; The solving the objective function comprises: The objective function is solved by taking the maximum power change times as the third constraint.

7. The method according to claim 1, characterized in that The target parameters also include the minimum duration of power transmission of the integrated energy base for which the power transmission power remains unchanged; The solving the objective function comprises: The objective function is solved by taking the minimum power duration as the fourth constraint.

8. A power transmission control system for an integrated energy base, characterized in that: The comprehensive energy base includes wind and solar power generation sources, thermal power generation sources and energy storage power sources; the system includes: A parameter acquisition module is used to acquire target parameters required for power transmission control, wherein the target parameters include power transmission control parameters of the integrated energy base, wind and solar power generation power of the wind and solar power generation source in each sub-period in the future target period, thermal power characteristic parameters and thermal power operation parameters of the thermal power generation source, and energy storage characteristic parameters of the energy storage power source; An objective function solving module is used to substitute the wind-solar power generation power into a preset objective function, take one or more of the power transmission control parameter, the thermal power characteristic parameter, the thermal power operation parameter and the energy storage characteristic parameter as the first constraint, take the maximum amount of electricity transmitted to the power grid within the target period as the goal, solve the objective function, and obtain the power generation power of the thermal power source, the charging and discharging power of the energy storage source and the power abandonment power of the wind-solar power source in each sub-period of the target period, wherein the objective function includes the power abandonment penalty function of the wind-solar power source and the power generation penalty function of the thermal power source; A control module is used to control the wind and solar power generation source, the thermal power generation source and the energy storage power source according to the solution result.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium is used to store a computer program, and when the computer program is executed by a processor, the method according to any one of claims 1 to 7 is implemented.

10. An electronic device, characterized in that: The electronic device comprises a processor and a memory, wherein the memory is used to store a computer program, and when the computer program is executed by the processor, the method according to any one of claims 1 to 7 is implemented.

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