Distributed new energy power supply control method and system based on power grid dispatching

Abstract

The invention discloses a distributed new energy power supply control method and system based on power grid dispatching, and relates to the technical field of energy regulation control, and the method comprises the steps: collecting real-time power generation state parameters, environment parameters and power grid load parameter data of each station power generation unit of a new energy power supply; performing normalization analysis on the data acquired in real time in each station to obtain a stable value of each station; performing effective power distribution on each station according to the load condition of the regional power grid; and monitoring the negative saturation site and carrying out distribution maintenance. By acquiring and analyzing the power generation parameters, the environment parameters and the power grid load parameters of each station in real time, the operation state of each station can be identified in time, and maximization of the power generation efficiency is ensured; by monitoring the output voltage, the frequency and the current and calculating the power generation state value, the potential overload risk can be identified, the stability of the power grid can be maintained, and the probability of fault occurrence can be reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of energy regulation and control, and in particular to a distributed new energy power supply control method and system based on power grid dispatching. Background Art

[0002] Distributed renewable energy power sources refer to small, decentralized renewable energy power generation systems located near users, which usually directly provide electricity to local users or are connected to the main power grid through microgrids. New energy power sources can be in the form of solar photovoltaic systems, wind turbines, small hydropower stations, biomass power generation, geothermal power generation, etc. Distributed power sources can improve energy self-sufficiency and can be used as backup power sources to ensure power supply in key areas and improve power supply stability. Distributed power sources are usually located near users, reducing energy losses in long-distance transmission and improving overall energy utilization.

[0003] At present, the dispatching and management of distributed renewable energy power sources cannot analyze and optimize resource allocation in real time, which easily leads to waste of resources. When faced with sudden weather changes, the accuracy is often insufficient, resulting in scheduling decision errors and failure to fully tap the potential and advantages of distributed power sources. Summary of the invention

[0004] In view of the above-mentioned problems, the present invention is proposed.

[0005] Therefore, the technical problem solved by the present invention is: how to analyze and optimize resource allocation in real time to improve scheduling accuracy.

[0006] To solve the above technical problems, the present invention provides the following technical solutions: a distributed renewable energy power supply control method based on power grid dispatching, comprising: collecting real-time power generation status parameters, environmental parameters and power grid load parameter data of power generation units at each site of the renewable energy power supply; performing normalization analysis on the data collected in real time at each site to obtain the stable value of each site; effectively distributing electricity to each site according to the regional power grid load conditions; monitoring negative saturation sites and performing distribution maintenance.

[0007] As a preferred solution of the distributed renewable energy power supply control method based on grid dispatching described in the present invention, the power generation state parameters include output power, voltage and current, frequency; the environmental parameters include light intensity, wind speed, temperature and humidity; the grid load is real-time power load data.

[0008] As a preferred solution of the distributed renewable energy power control method based on grid dispatching described in the present invention, the normalized analysis includes converting the output power value Ki, output voltage value Di, output current value Li, output power frequency value Pi, output stable voltage value D of the site power generation unit into the output power value Ki, output voltage value Di, output current value Li, output power frequency value Pi, output stable voltage value D 稳定 , output stable frequency value P稳定 and the maximum rated current value L 额定 Substitute the value of into the set formula to calculate the power generation state value S 发电 :

[0009]

[0010] The light intensity value Gi, wind speed value Vi, rated wind speed value V 额定 Substitute the values ​​of temperature Wi and humidity Hi into the set formula to calculate the environmental state value S 环境 :

[0011]

[0012] The power generation state value S 发电 and the environmental state value S 环境 Substitute the value of into the set formula to calculate the site stability value S of the distributed new energy power station 稳定 :

[0013]

[0014] Among them, a1, a2, a3, a4, a5, a6, a7, a8, a9 and a10 are respectively set weight factors, e is a natural constant; I represents the total number of distributed renewable energy power supply sites, and i represents the number of any distributed renewable energy power supply site;

[0015] A site stability value threshold interval is set, and the calculated site stability value is compared with the set site stability value threshold interval for analysis. When the calculated site stability value is greater than the maximum value of the set stability assessment value threshold interval, the site is recorded as a saturated site; when the site stability value is within the set site stability value threshold interval, the site is recorded as a balanced site; when the site stability value is less than the minimum value of the set site stability value threshold interval, the site is recorded as a negative saturated site. While recording, the information of the saturated site, balanced site and negative saturated site is sent to the server for storage.

[0016] As a preferred solution of the distributed renewable energy power control method based on power grid dispatching described in the present invention, the calculation of the load situation of the regional power grid includes calculating the daily average load F of the regional power grid. m平均 :

[0017]

[0018] Calculate the estimated value of the power grid load F m预估 :

[0019]

[0020] Among them, Fmj is the real-time load data of each regional power grid, M represents the total number of areas with power demand, m represents the number of any area with power demand, J represents the total number of collection times for obtaining the real-time load data of the regional power grid, j represents the sequence number of any collection time, and F m峰值 is the peak load, T is the collection time period, t is the collection frequency, and λ is the set correction factor.

[0021] As a preferred solution of the distributed renewable energy power control method based on power grid dispatching described in the present invention, a two-dimensional rectangular coordinate system is constructed with the acquisition time as the horizontal coordinate and the estimated value of the regional power grid load as the vertical coordinate, the estimated value of the regional power grid load is input into the coordinate system according to the corresponding acquisition time, and the position of the estimated value of the regional power grid load in the coordinate system is recorded as the estimated point, and a line segment is used to link each estimated point in sequence according to the acquisition time to obtain a line graph of the estimated value of the regional power grid load over time, and the slope Xm of the line segment composed of two adjacent estimated points is calculated:

[0022]

[0023] The demand value Um of the regional power grid load is calculated based on the obtained slope:

[0024]

[0025] Among them, X1 is the number of load slopes greater than zero, X2 is the number of load slopes less than zero, X3 is the number of matching slopes equal to zero, Y1 is the load increase degree, Y2 is the load decrease degree, b1 and b2 are the set weight factors respectively;

[0026] A demand threshold is set, and the calculated demand value of the regional power grid load is compared and analyzed with the set demand threshold. When the calculated demand value of the regional power grid load is greater than the set demand threshold, it indicates that the regional power grid load demand is on an upward trend, and the power grid load in the area is recorded as an increasing load area; when the demand value of the regional power grid load is less than or equal to the set demand threshold, it indicates that the regional power grid load demand remains stable or shows a downward trend, and the power grid load in the area is recorded as a decreasing load area, and the information of the increasing load area and the decreasing load area is sent to the server.

[0027] As a preferred solution of the distributed renewable energy power control method based on power grid dispatching described in the present invention, the effective power distribution includes counting the number of power grid load areas in the region where the load is rising and sorting them in order from large to small demand values, counting the number of saturated sites and sorting them in order from large to small stability values, and selecting the site with the largest stability value as the site to be adjusted;

[0028] The adjustment distance Qim and the saturation station stability value S 稳定 Substitute the value into the set formula to calculate the adjustment value Rim:

[0029]

[0030] Among them, b3 and b4 are the set weight factors respectively, and e is a natural constant; the regulation value of each site is obtained, and the rising load area is allocated to the saturated site with the largest regulation value in turn for energy regulation control, and the state of the saturated site is updated to a balanced site; the above steps are repeated until the regulation of all rising load areas is completed.

[0031] As a preferred solution of the distributed renewable energy power control method based on power grid dispatching described in the present invention, the distribution maintenance includes obtaining the personnel information of the backstage dispatching personnel and calculating the dispatching value En of the backstage dispatching personnel:

[0032]

[0033] Among them, N represents the total number of backstage dispatchers, n represents the number of any backstage dispatcher, Zn is the dispatcher's length of service, Cn is the value of the maintenance times, and b5 and b6 are the set weight factors respectively;

[0034] Obtain negative saturation sites from the server and sort them from small to large according to the site stability value; sort the background dispatchers from large to small according to the dispatch value, and record them as dispatchers to be assigned, and give priority to dispatchers with high weights; when the dispatcher assigns the task, the dispatcher confirms on the device side, updates the to-be-assigned state to the assigned state and removes it from the sequence of dispatchers to be assigned; if the dispatch values ​​are the same, select the dispatcher with a faster confirmation speed until all dispatch maintenance tasks are assigned.

[0035] In the second aspect, another object of the present invention is to provide a distributed new energy power control system based on power grid dispatch, including: an information acquisition module, a server, an information analysis module, an energy regulation module and an early warning management module; the information acquisition module is used to collect the real-time power generation status parameters, environmental parameters and power grid load parameters of the power generation units at each site of the new energy power supply, and send them to the server for storage; the information analysis module is used to perform normalized analysis on the real-time power generation parameters, environmental parameters and power grid load parameters in each site to obtain the stable value of each site; the energy regulation module is used to effectively distribute electricity to each site according to the regional power grid load conditions; the early warning management module is used to monitor negative saturation sites and perform distribution maintenance.

[0036] In a third aspect, a computer device includes a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the steps of the distributed renewable energy power supply control method based on power grid scheduling as described above are implemented.

[0037] In a fourth aspect, a computer-readable storage medium stores a computer program, which, when executed by a processor, implements the steps of the distributed renewable energy power supply control method based on power grid scheduling as described above.

[0038] Beneficial effects of the present invention: A distributed renewable energy power supply control method and system based on power grid dispatching of the present invention can timely identify the operating status of each site by real-time acquisition and analysis of the power generation parameters, environmental parameters and power grid load parameters of each site, ensuring maximum power generation efficiency; by monitoring the output voltage, frequency and current, and calculating the power generation status value, potential overload risks can be identified, which helps to maintain the stability of the power grid and reduce the probability of failure; the above steps and methods can significantly improve the management efficiency of distributed renewable energy power supply sites and the overall stability of the power grid; it not only helps to achieve the rational use of energy, but also promotes the development and application of renewable energy, in line with the goal of sustainable development.

[0039] Dynamically adjust the power output of each site according to changes in load demand, improve the utilization efficiency of power resources, and reduce energy waste; real-time data monitoring and analysis can ensure timely adjustment of power generation and distribution strategies when load changes to meet user needs; by identifying saturated sites and making timely adjustments, reduce system risks and improve overall power supply security, dynamic adjustment of power output can reduce unnecessary power generation costs and improve economic benefits; through the above methods, it can be ensured that when the grid load changes, the power output of each site can be flexibly adjusted, thereby effectively meeting the load demand of the regional power grid, reducing overload risks, and improving energy utilization efficiency; by optimizing energy utilization and reducing waste, it helps to reduce carbon emissions and other environmental impacts and promote the realization of environmental protection goals.

[0040] By allocating tasks from high to low according to the dispatch value, experienced dispatchers with more maintenance times are given priority in tasks, which greatly shortens the response time and improves the efficiency of emergency handling. By automatically obtaining dispatcher information and negative saturation site information, automatic allocation is achieved, reducing the delay and error risks caused by human intervention. The allocation strategy based on the dispatcher's qualifications and experience data effectively improves the stability of the power grid and further enhances the overall reliability and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0042] Figure 1 An overall flow chart of a distributed renewable energy power supply control method based on power grid dispatching provided by an embodiment of the present invention;

[0043] Figure 2 A schematic structural diagram of a distributed renewable energy power supply control system based on power grid dispatching is provided for one embodiment of the present invention. DETAILED DESCRIPTION

[0044] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the drawings of the specification. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary persons in the art without creative work should fall within the scope of protection of the present invention.

[0045] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0046] Example 1

[0047] Reference Figure 1 , is an embodiment of the present invention, and provides a distributed new energy power supply control method based on power grid scheduling, comprising:

[0048] S1: Collect the real-time power generation status parameters, environmental parameters and grid load parameter data of the power generation units at each site of the new energy power source;

[0049] Furthermore, the power generation status parameters include: output power, voltage and current, frequency; environmental parameters include: light intensity, wind speed, temperature and humidity; the grid load is real-time power load data, which specifically monitors the real-time load situation of the grid and understands the current power demand.

[0050] S2: normalize and analyze the data collected in real time at each site to obtain the stable value of each site;

[0051] Furthermore, the distributed renewable energy sources are divided into i sites, where i = 1, 2, 3 ... I, where I is a positive integer, I represents the total number of distributed renewable energy source sites, and i represents the number of any distributed renewable energy source site; the output power value of the site power generation unit is obtained in real time, and is recorded as Ki; the output voltage value and current value of the site power generation unit are obtained, and are recorded as Di and Li respectively; the frequency value of the site output power is obtained, and is recorded as Pi; the output stable voltage value of the site power generation unit is set to D 稳定 The closer the output voltage value is to the stable voltage value, the more stable the operation of the power grid is; the output stable frequency value of the site power generation unit is set to P 稳定 The closer the output frequency value is to the stable frequency value, the more stable the power grid is; the maximum rated current value of the site power generation unit is set to L 额定 When the output current value of the site power generation unit exceeds the maximum rated current value, the greater the excess current value, the higher the risk of grid overload; the output power value Ki, output voltage value Di, output current value Li, output power frequency value Pi, output stable voltage value D of the site power generation unit 稳定 , output stable frequency value P 稳定 and the maximum rated current value L 额定 Substitute the value of into the set formula:

[0052]

[0053] Calculate the power generation state value S 发电 , where a1, a2, a3 and a4 are the set weight factors respectively, and e is a natural constant; from the formula, it can be obtained that the higher the output power value of the site power generation unit, the greater the power generation state value; when the output voltage value is closer to the stable voltage, the operation of the power grid is more stable, and the power generation state value is larger; when the output current value is closer to the maximum rated current, the power generation state value is smaller; when the output frequency value is closer to the stable frequency, the operation of the power grid is more stable, and the power generation state value is larger;

[0054] Furthermore, the light intensity value of the distributed renewable energy power supply site area is obtained and recorded as Gi; the wind speed value of the site area is obtained and recorded as Vi; the rated wind speed value is set to V 额定 , at rated wind speed, the output power of the generator reaches the maximum; obtain the temperature and humidity values ​​of the site area and record them as Wi and Hi respectively; record the light intensity value Gi, wind speed value Vi, rated wind speed value V 额定 , temperature Wi and humidity Hi are substituted into the set formula:

[0055]

[0056] Calculate the environmental state value S 环境, where a5, a6, a7 and a8 are the set weight factors respectively, and e is a natural constant. It can be obtained from the formula that the greater the light intensity value, the greater the environmental state value; the closer the wind speed value of the site area is to the rated wind speed value, the greater the environmental state value; the higher the temperature value, the smaller the environmental state value; the higher the humidity value, the smaller the environmental state value;

[0057] The power generation state value S 发电 and the environmental state value S 环境 Substitute the value of into the set formula:

[0058]

[0059] Calculate the site stability value S of the distributed new energy power station 稳定 , where a9 and a10 are respectively set weight factors, and e is a natural constant; from the formula, it can be obtained that the larger the power generation state value, the more stable the site power generation and the larger the site stability value; the larger the environmental state value, the more stable the site power generation and the larger the site stability value; set a site stability value threshold interval, compare and analyze the site stability value with the set site stability value threshold interval, when the site stability value is greater than the maximum value of the set stability assessment value threshold interval, the site is recorded as a saturated site; when the site stability value is within the set site stability value threshold interval, the site is recorded as a balanced site; when the site stability value is less than the minimum value of the set site stability value threshold interval, the site is recorded as a negative saturated site; and the saturated site, the balanced site and the negative saturated site are sent to the server for storage;

[0060] It should be noted that by acquiring and analyzing the power generation parameters, environmental parameters and grid load parameters of each site in real time, the operating status of each site can be identified in time to ensure maximum power generation efficiency; by monitoring the output voltage, frequency and current, and calculating the power generation status value, potential overload risks can be identified, which helps to maintain the stability of the grid and reduce the probability of failure; the above steps and methods can significantly improve the management efficiency of distributed new energy power supply sites and the overall stability of the grid; it not only helps to achieve the rational use of energy, but also promotes the development and application of renewable energy, in line with the goal of sustainable development.

[0061] S3: Effectively distribute power to each site based on the regional power grid load;

[0062] Furthermore, the total load information of the regional power grid is monitored and collected in real time, including the daily peak load, the daily average load and the daily load change trend; the real-time load data of each regional power grid is obtained and recorded as Fmj, where m=1, 2, 3...M, M is a positive integer, M represents the total number of areas with electricity demand, m represents the number of any area with electricity demand, where j=1, 2, 3...J, J is a positive integer, J represents the total number of collection moments for obtaining the real-time load data of the regional power grid, and j represents the sequence number of any collection moment; it should be noted that the collection moment can be every hour or every 15 minutes, which is set by industry professionals according to their needs; using the formula:

[0063]

[0064] Calculate the average daily load F of the regional power grid m平均 ; Get the daily peak load of the regional power grid and record it as F m峰值 ; The real-time load data Fmj and average load F m平均 and peak load F m峰值 Substitute the value of into the set formula:

[0065]

[0066] Calculate the estimated value of the power grid load F m预估 , where T is the time period of the data collection, which can be every hour or every 15 minutes; t is the frequency of data collection, which can be every half hour or every 15 minutes; λ is the set correction factor; From the formula, it can be obtained that the greater the average load, the greater the estimated value of the regional power grid load; when the peak load is greater and the average load remains unchanged, the difference between the peak load and the average load increases, and the estimated value of the regional power grid load is greater;

[0067] Furthermore, a two-dimensional rectangular coordinate system is constructed with the acquisition time as the horizontal coordinate and the estimated value of the regional power grid load as the vertical coordinate. The estimated value of the regional power grid load is input into the coordinate system according to the corresponding acquisition time, and the position of the estimated value of the regional power grid load in the coordinate system is recorded as the estimated point. A line segment is used to link each estimated point in sequence according to the acquisition time to obtain a line graph of the change of the estimated value of the regional power grid load over time; the slope of the line segment composed of two adjacent estimated points is calculated, and the formula is used:

[0068]

[0069] The load slope Xm of the regional power grid is calculated. The load slope represents the load change trend of the regional power grid between two adjacent load points. When the load slope is greater than zero, it means that the load of the power grid at the estimated point presents an upward trend, indicating that the load of the power grid from the estimated point to the next load point increases. When the matching slope is less than zero, it means that the load of the power grid at the estimated point presents a downward trend, indicating that the load of the power grid from the estimated point to the next estimated point decreases. The number of load slopes greater than zero is counted and recorded as X1, and the load slopes greater than zero are summed to obtain the load increase degree Y1. The number of load slopes less than zero is counted and recorded as X2, and the matching slopes less than zero are summed to obtain the load decrease degree Y2. The number of matching slopes equal to zero is counted and recorded as X3. Substitute the values ​​of the number of load slopes greater than zero X1, the number of load slopes less than zero X2, the number of matching slopes equal to zero X3, the load increase degree Y1 and the load decrease degree Y2 into the set formula:

[0070]

[0071] The demand value Um of the regional power grid load is calculated, where b1 and b2 are the set weight factors respectively. It can be obtained from the formula that the more load slopes are less than zero, the smaller the demand value is; the more load slopes are greater than zero and equal to zero, the greater the demand value is; the greater the load rise, the greater the demand value is;

[0072] It should be noted that a demand threshold is set, and the demand value of the regional power grid load is compared and analyzed with the set demand threshold. When the demand value of the regional power grid load is greater than the set demand threshold, it indicates that the regional power grid load demand is on an upward trend, and the power grid load in the region is recorded as an increasing load area; when the demand value of the regional power grid load is less than or equal to the set demand threshold, it indicates that the regional power grid load demand remains stable or shows a downward trend, and the power grid load in the region is recorded as a decreasing load area, and the increasing load area and the decreasing load area are sent to the server;

[0073] Furthermore, the grid load of the statistical area is the number of rising load areas and is sorted in order of demand value from large to small, the number of saturated sites is counted and sorted in order of stability value from large to small, and the site with the largest stability value is selected as the site to be adjusted; the positions of the rising load area and the saturated site are obtained and the distance is calculated to obtain the adjustment distance, which is recorded as Qim; the adjustment distance Qim and the saturated site stability value S 稳定 Substitute the value of into the set formula:

[0074]

[0075] The adjustment value Rim is calculated, where b3 and b4 are respectively the set weight factors, and e is a natural constant. It can be obtained from the formula that the larger the adjustment distance (the farther the distance), the smaller the adjustment value; the larger the stability value of the saturated site, the larger the adjustment value; thus, the adjustment value of each site can be obtained, and the rising load area is sequentially allocated to the saturated site with the largest adjustment value for energy adjustment control, and the state of the saturated site is updated to a balanced site; the above steps are repeated until the adjustment of all rising load areas is completed;

[0076] It should be noted that the power output of each site is dynamically adjusted according to changes in load demand, which improves the utilization efficiency of power resources and reduces energy waste; real-time data monitoring and analysis can ensure that the power generation and distribution strategies are adjusted in time when the load changes to meet user needs; by identifying saturated sites and making timely adjustments, the risk of the system is reduced, the overall power supply security is improved, and dynamic adjustment of power output can reduce unnecessary power generation costs and improve economic benefits; through the above methods, it can be ensured that when the grid load changes, the power output of each site can be flexibly adjusted, thereby effectively meeting the load demand of the regional power grid, reducing the risk of overload, and improving energy utilization efficiency; by optimizing energy utilization and reducing waste, it helps to reduce carbon emissions and other environmental impacts and promote the realization of environmental protection goals.

[0077] S4: Monitor negative saturation sites and perform distribution maintenance.

[0078] It should be noted that the personnel information of the backstage dispatcher is obtained, wherein the personnel information includes the name, mobile phone number, length of service and number of maintenance processing of the dispatcher; the length of service and number of maintenance processing of the dispatcher are marked as Zn and Cn respectively, wherein n=1, 2, 3...N, N is a positive integer, N represents the total number of backstage dispatchers, and n represents the number of any backstage dispatcher; the values ​​of the length of service Zn and number of maintenance processing Cn of the dispatcher are substituted into the set formula:

[0079]

[0080] The dispatch value En of the backstage dispatcher is calculated, where b5 and b6 are the set weight factors. It can be obtained from the formula that the closer the length of service is to 15 years, the greater the dispatch value; the more maintenance times, the greater the dispatch value. It should be noted that the specific optimal length of service is set by the power company according to demand.

[0081] Furthermore, negative saturation sites are obtained from the server and sorted from small to large according to the site stability value; the backend dispatchers are sorted from large to small according to the dispatch value, and they are recorded as dispatchers to be assigned, and dispatchers with high weights are assigned first; when the dispatcher assigns the task, the dispatcher confirms on the device side, updates the to-be-assigned state to the assigned state and removes it from the sequence of dispatchers to be assigned; if the dispatch values ​​are the same, the dispatcher with faster confirmation speed is selected until all dispatch maintenance tasks are assigned;

[0082] It should be noted that by allocating tasks from high to low according to the dispatch value, experienced dispatchers with more maintenance times are given priority in tasks, which greatly shortens the response time and improves the efficiency of emergency handling; by automatically obtaining dispatcher information and negative saturation site information, automated allocation is achieved, reducing the delay and error risks caused by human intervention; the allocation strategy based on the dispatcher's qualifications and experience data effectively improves the stability of the power grid and further enhances the overall reliability and safety.

[0083] Example 2

[0084] See also Figure 2 , is an embodiment of the present invention, which provides a distributed new energy power control system based on power grid dispatch, including: an information collection module, a server, an information analysis module, an energy regulation module and an early warning management module; the information collection module is used to collect real-time power generation status parameters, environmental parameters and power grid load parameters of power generation units at each site of the new energy power source, and send them to the server for storage; the information analysis module is used to perform normalization analysis on the real-time power generation parameters, environmental parameters and power grid load parameters in each site to obtain the stable value of each site; the energy regulation module is used to effectively distribute electricity to each site according to the regional power grid load situation; the early warning management module is used to monitor the negative saturation site and perform distribution maintenance.

[0085] Example 3

[0086] An embodiment of the present invention is different from the first two embodiments in that:

[0087] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc., which can store program code.

[0088] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in conjunction with such instruction execution systems, devices or apparatuses. For the purposes of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in conjunction with such instruction execution systems, devices or apparatuses.

[0089] More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection with one or more wires (electronic device), a portable computer disk case (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be a paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, deciphering or, if necessary, processing in another suitable manner, and then stored in a computer memory.

[0090] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, a plurality of steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0091] Example 4

[0092] An embodiment of the present invention provides a distributed renewable energy power supply control method based on power grid dispatching. In order to verify the beneficial effects of the present invention, scientific demonstration is carried out through economic benefit calculation and simulation experiments.

[0093] The experimental cycle is 24 hours, and data is collected and analyzed every hour. The results are shown in the following table:

[0094]

[0095] During periods of rising load (such as periods 3, 9, 10, etc.), the system can effectively identify and adjust areas with high load demand, and ensure that the grid load can be smoothly adjusted by adjusting the corresponding distributed new energy power supply sites (such as adjusting from saturated sites and negative saturated sites). Through normalized analysis and calculation, the site stability value (such as 0.80, 0.75, etc.) can effectively reflect the operating status of the site. When the site stability value is less than the set threshold, it is automatically marked as a negative saturated site, and its power output is adjusted in time to maintain grid stability. In different dispatching scenarios (such as periods 6, 7, 8, etc.), by automatically allocating dispatching tasks, dispatchers can respond and dispatch quickly, shortening the response time (such as between 9 and 17 minutes). This measure greatly improves the efficiency and stability of grid dispatching.

[0096] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A distributed renewable energy power supply control method based on power grid dispatching, characterized in that: include: Collect real-time power generation status parameters, environmental parameters and grid load parameter data of power generation units at each site of new energy power supply; Normalize and analyze the data collected in real time at each site to obtain the stable value of each site; Effectively distribute electricity to each site based on the regional power grid load; Monitor negative saturation sites and perform distribution maintenance.

2. The distributed renewable energy power supply control method based on power grid dispatching according to claim 1, characterized in that: The power generation state parameters include: output power, voltage and current, frequency; the environmental parameters include: light intensity, wind speed, temperature and humidity; the grid load is real-time power load data.

3. The distributed renewable energy power supply control method based on power grid dispatching according to claim 1, characterized in that: The normalization analysis includes converting the output power value Ki, output voltage value Di, output current value Li, output power frequency value Pi, output stable voltage value D of the site power generation unit into 稳定 , output stable frequency value P 稳定 and the maximum rated current value L 额定 Substitute the value of into the set formula to calculate the power generation state value S 发电 : The light intensity value Gi, wind speed value Vi, rated wind speed value V 额定 Substitute the values ​​of temperature Wi and humidity Hi into the set formula to calculate the environmental state value S 环境 : The power generation state value S 发电 and the environmental state value S 环境 Substitute the value of into the set formula to calculate the site stability value S of the distributed new energy power station 稳定 : Among them, a1, a2, a3, a4, a5, a6, a7, a8, a9 and a10 are respectively set weight factors, e is a natural constant; I represents the total number of distributed renewable energy power supply sites, and i represents the number of any distributed renewable energy power supply site; A site stability value threshold interval is set, and the calculated site stability value is compared with the set site stability value threshold interval for analysis. When the calculated site stability value is greater than the maximum value of the set stability assessment value threshold interval, the site is recorded as a saturated site; when the site stability value is within the set site stability value threshold interval, the site is recorded as a balanced site; when the site stability value is less than the minimum value of the set site stability value threshold interval, the site is recorded as a negative saturated site. While recording, the information of the saturated site, balanced site and negative saturated site is sent to the server for storage.

4. The distributed renewable energy power supply control method based on power grid dispatching according to claim 3, characterized in that: The calculation of the regional power grid load condition includes calculating the daily average load F of the regional power grid. m平均 : Calculate the estimated value of the power grid load F m预估 : Among them, Fmj is the real-time load data of each regional power grid, M represents the total number of areas with power demand, m represents the number of any area with power demand, J represents the total number of collection times for obtaining the real-time load data of the regional power grid, j represents the sequence number of any collection time, and F m峰值 is the peak load, T is the collection time period, t is the collection frequency, and λ is the set correction factor.

5. The distributed renewable energy power supply control method based on power grid dispatching according to claim 4, characterized in that: A two-dimensional rectangular coordinate system is constructed with the acquisition time as the horizontal coordinate and the estimated value of the regional power grid load as the vertical coordinate. The estimated value of the regional power grid load is input into the coordinate system according to the corresponding acquisition time, and the position of the estimated value of the regional power grid load in the coordinate system is recorded as the estimated point. A line segment is used to link each estimated point in sequence according to the acquisition time to obtain a line graph of the change of the estimated value of the regional power grid load over time, and the slope Xm of the line segment composed of two adjacent estimated points is calculated: The demand value Um of the regional power grid load is calculated based on the obtained slope: Among them, X1 is the number of load slopes greater than zero, X2 is the number of load slopes less than zero, X3 is the number of matching slopes equal to zero, Y1 is the load increase degree, Y2 is the load decrease degree, b1 and b2 are the set weight factors respectively; A demand threshold is set, and the calculated demand value of the regional power grid load is compared and analyzed with the set demand threshold. When the calculated demand value of the regional power grid load is greater than the set demand threshold, it indicates that the regional power grid load demand is on an upward trend, and the power grid load in the area is recorded as an increasing load area; when the demand value of the regional power grid load is less than or equal to the set demand threshold, it indicates that the regional power grid load demand remains stable or shows a downward trend, and the power grid load in the area is recorded as a decreasing load area, and the information of the increasing load area and the decreasing load area is sent to the server.

6. The distributed renewable energy power supply control method based on power grid dispatching according to claim 5, characterized in that: The effective distribution of electricity includes counting the number of areas where the grid load is an increasing load and sorting them in order of demand value from large to small, counting the number of saturated sites and sorting them in order of stability value from large to small, and selecting the site with the largest stability value as the site to be adjusted; The adjustment distance Qim and the saturation station stability value S 稳定 Substitute the value into the set formula to calculate the adjustment value Rim: Among them, b3 and b4 are the set weight factors respectively, and e is a natural constant; the regulation value of each site is obtained, and the rising load area is allocated to the saturated site with the largest regulation value in turn for energy regulation control, and the state of the saturated site is updated to a balanced site; the above steps are repeated until the regulation of all rising load areas is completed.

7. The distributed renewable energy power supply control method based on power grid dispatching according to claim 6, characterized in that: The allocation maintenance includes obtaining the personnel information of the backstage dispatcher and calculating the dispatch value En of the backstage dispatcher: Among them, N represents the total number of backstage dispatchers, n represents the number of any backstage dispatcher, Zn is the dispatcher's length of service, Cn is the value of the maintenance times, and b5 and b6 are the set weight factors respectively; Obtain negative saturation sites from the server and sort them from small to large according to the site stability value; sort the background dispatchers from large to small according to the dispatch value, and record them as dispatchers to be assigned, and give priority to dispatchers with high weights; when the dispatcher assigns the task, the dispatcher confirms on the device side, updates the to-be-assigned state to the assigned state and removes it from the sequence of dispatchers to be assigned; if the dispatch values ​​are the same, select the dispatcher with a faster confirmation speed until all dispatch maintenance tasks are assigned.

8. A system using the distributed renewable energy power supply control method based on power grid dispatching as claimed in any one of claims 1 to 7, characterized in that: include: Information collection module, server, information analysis module, energy control module and early warning management module; The information collection module is used to collect real-time power generation status parameters, environmental parameters and grid load parameters of power generation units at each site of the new energy power source, and send them to the server for storage; The information analysis module is used to perform normalization analysis on the real-time power generation parameters, environmental parameters and grid load parameters in each site to obtain the stable value of each site; The energy control module is used to effectively distribute electricity to each site according to the load of the regional power grid; The early warning management module is used to monitor negative saturation sites and perform distribution maintenance.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the distributed renewable energy power supply control method based on power grid scheduling described in any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the distributed renewable energy power supply control method based on power grid scheduling described in any one of claims 1 to 7 are implemented.

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