Real-time control method and system for provincial and regional distribution micro-active power

Abstract

The invention discloses a provincial and regional distribution micro active power real-time control method and system, and the method comprises the steps: obtaining and analyzing the adjustment characteristics of various adjustable resources of different voltage levels in the dispatching jurisdiction range of each level of the provincial and regional distribution micro, constructing a full-type full-voltage-class adjustable resource AGC response time chain, a full-type full-voltage-class adjustable resource active power insufficiency increasing and transmitting time chain and a full-type full-voltage-class adjustable resource active power sufficiency decreasing and transmitting time chain; based on a full-type full-voltage-class adjustable resource AGC response time chain, a full-type full-voltage-class adjustable resource additional transmission time chain and a full-type full-voltage-class adjustable resource reduced transmission time chain, scheduling priority values of scheduling participated by various adjustable resources are calculated in combination with adjustable capacity characteristics, economical efficiency priority and flexibility priority; and performing real-time control on active power according to a priority sequence corresponding to the scheduling priority values of the scheduling participated by the various adjustable resources, and performing novel power system construction. According to the invention, power system scheduling can be optimized more comprehensively.

Description

Technical Field

[0001] The present application belongs to the field of active power optimization and dispatching of electric power systems, and in particular to a real-time control method and system for provincial and local micro-distribution active power. Background Art

[0002] With the rapid development of society and the continuous adjustment of the energy structure, the power system faces increasingly complex challenges. Renewable energy exhibits significant volatility and randomness at different time scales, making grid operation and management more complex and leading to a sharp decline in grid-side economic benefits. The multi-level coordinated interactive control of the power system, encompassing provincial, regional, and micro-level distribution networks, enables multi-level collaborative management from the provincial and regional levels to the distribution network. By sharing and coordinating adjustable resources across these levels, the overall operational efficiency and security of the power grid can be improved. Furthermore, the multi-level coordination mechanism enables the power system to better optimize the allocation of adjustable resources, reduce power losses, and enhance overall economic benefits.

[0003] Prior art document 1 (CN118117605A) discloses a method and system for data interaction between the main and distribution networks of a power grid precise load shedding system, which collects, distributes and feeds back data information between the main and distribution networks through provincial and local distribution, and the provincial dispatching department establishes a resource pool and monitors and manages the resource pool.

[0004] Prior art document 2 (CN118523312A) discloses an active distributed resource optimization scheduling method based on a virtual power plant. The virtual power plant uses a built-in data acquisition system to collect relevant data of the distributed adjustable resources of the virtual power plant on that day in real time. The scheduling master station analyzes and processes the relevant data of the distributed adjustable resources to obtain the wind-solar coupling output value of the virtual power plant corresponding to the next day.

[0005] Prior art document 3 (CN118412857A) discloses a method, device, equipment and medium for aggregating adjustable resources in a park integrated energy system. It uses intervals to describe the operating characteristics of distributed resources to establish a linear programming model, and aggregates adjustable resources according to the optimal solution. The adjustable resources include photovoltaics, temperature control loads, charging piles, conventional loads, cogeneration units and energy storage.

[0006] However, prior art document 1 fails to consider the impact of local low-voltage microgrids on the power system. Prior art document 2 considers only distributed wind and solar power generation and virtual energy storage, with a limited number of adjustable resources involved in coordinated scheduling. Prior art document 3 considers only the adjustable resource characteristics of campus-level microgrids, ignoring the regulatory characteristics of higher-level grids. Therefore, a more effective and accurate method for optimizing active power scheduling in power systems is urgently needed. Summary of the Invention

[0007] The purpose of the present invention is to overcome the existing technical defects in the daily active power dispatch plan of the provincial, local and micro-integrated power system, apply the optimization method to optimize the power system dispatch, and propose a real-time control method and system for the provincial, local and micro-integrated active power, taking into account the regulation characteristics and priority mechanism of adjustable resources, to improve the effectiveness and accuracy of power system dispatch.

[0008] The present invention adopts the following technical solutions.

[0009] A first aspect of the present invention provides a method for real-time control of active power of micro-distribution in a land-saving manner, comprising:

[0010] Obtain various adjustable resources of different voltage levels within the jurisdiction of provincial and local micro-dispatching systems, and analyze the adjustment characteristics of various adjustable resources, including adjustable capacity characteristics, AGC response time, active power shortage increase characteristics, active power sufficient reduction characteristics, economy and flexibility;

[0011] Build an AGC response time chain for all types of adjustable resources at all voltage levels based on the AGC response time; build an increase time chain for all types of adjustable resources at all voltage levels based on the increase characteristics of insufficient active power; build a decrease time chain for all types of adjustable resources at all voltage levels based on the decrease characteristics of sufficient active power;

[0012] Based on the AGC response time chain of all types and voltage levels of adjustable resources, the time chain of additional issuance of all types and voltage levels of adjustable resources, and the time chain of reduced issuance of all types and voltage levels of adjustable resources, combined with the adjustable capacity characteristics, economic priority and flexibility priority, the dispatch priority values of various types of adjustable resources participating in dispatch are calculated, and the active power is controlled in real time according to the priority order corresponding to the dispatch priority values of various types of adjustable resources participating in dispatch, so as to construct a new power system.

[0013] Optionally, the scheduling priority value P of each type of adjustable resource participating in the scheduling is calculated according to the following formula in combination with the adjustable capacity characteristics, economic priority and flexibility priority: i :

[0014]

[0015] Among them, F i is the adjustable capacity of adjustable resource i, n is the number of adjustable resources, A i is the adjustable resource capacity priority value, B i is the economic priority value of the adjustable resource, C i is the flexibility priority value of the adjustable resource, E ri D is the priority value of adjustable resource i in the time chain of increasing or decreasing adjustable resources of all types and voltage levels. jiis the priority value of adjustable resource i in the AGC response time chain of all types and voltage levels of adjustable resources, r is the category of the all types and voltage levels of adjustable resources increase time chain or the all types and voltage levels of adjustable resources decrease time chain, and j is the category of the all types and voltage levels of adjustable resources AGC response time chain.

[0016] Optionally, based on the AGC response time chain of all types and all voltage levels of adjustable resources, the time chain of increase of all types and all voltage levels of adjustable resources, and the time chain of decrease of all types and all voltage levels of adjustable resources, the scheduling priority values of various types of adjustable resources participating in scheduling are calculated in combination with the adjustable capacity characteristics, the economic priority, and the flexibility priority, and active power is controlled in real time according to the priority order corresponding to the scheduling priority values of various types of adjustable resources participating in scheduling, including:

[0017] S3.1. Determine whether the grid frequency meets the first condition. If so, execute S3.3; otherwise, execute S3.2. The first condition includes the grid frequency continuously exceeding a first time threshold deviation from a reference value within a preset range of [base - Δε, base + Δε] and / or continuously exceeding a second time threshold deviation from a reference value of base.

[0018] S3.2: If the system is running stably and no active power correction is required, execute S3.1;

[0019] S3.3. Determine whether the grid frequency is lower than the base value. If so, execute S3.4; otherwise, execute S3.5.

[0020] S3.4, determine whether the grid frequency meets the second condition, if not, calculate E according to the first additional time chain E1 ri Then execute S3.6. If yes, calculate E according to the second additional issuance time chain E2. ri Then, S3.6 is executed, where the second condition includes that the grid frequency continuously exceeds a first threshold value below base-Δε for a period of time and / or continuously exceeds a second threshold value below a reference value base for a period of time;

[0021] S3.5, determine whether the grid frequency meets the third condition, if so, calculate E according to the third reduction time chain E3 ri Then execute S3.6. If not, calculate E according to the fourth reduction time chain E4. ri Then execute S3.6; the third condition includes that the grid frequency continuously exceeds a third time threshold higher than base+Δε and / or continuously exceeds a fourth time threshold higher than a reference value base;

[0022] S3.6, determine whether the wind and solar resources are sufficient, if not, calculate D according to the first AGC response time chain D1 ji If so, calculate D according to the second AGC response time chain D2 ji ;

[0023] S3.7, according to D ji 、E ri , combining the adjustable capacity characteristics, economic priority and flexibility priority to calculate the scheduling priority values of various adjustable resources participating in scheduling;

[0024] S3.8. Perform real-time control of active power according to the priority order corresponding to the priority values of various adjustable resources participating in the scheduling.

[0025] Optionally, when the wind speed is within a preset wind speed range and / or the solar radiation amount is greater than or equal to a solar radiation amount threshold, it is determined that the wind and solar resources are sufficient;

[0026] When the wind speed is not within the preset wind speed range and the solar radiation is less than the solar radiation threshold, it is determined that the wind and solar resources are insufficient.

[0027] Optionally, active power is controlled in real time according to the priority order corresponding to the priority values of various adjustable resources participating in the scheduling, including:

[0028]

[0029] Among them, Power i is the active power distribution of adjustable resource i, P i is the scheduling priority value of the adjustable resource i participating in the scheduling, Power total is the total distributable active power of the system.

[0030] Optionally, for provincial power grids, the adjustable resources include at least one of the following: large thermal power plants, centralized photovoltaic power stations and centralized wind farms; for municipal distribution networks, the adjustable resources include at least one of the following: energy storage power plants, dam-type hydropower stations and thermal storage power plants; for microgrids, the adjustable resources include at least one of the following: small industrial parks, distributed photovoltaic units, distributed wind power units and user loads.

[0031] Optionally, the regulation characteristics include horizontal characteristics and vertical characteristics. The horizontal characteristics are different regulation characteristics of adjustable resources at different time scales at the same voltage level, and the vertical characteristics are different regulation characteristics of adjustable resources at different voltage levels at the same time scale.

[0032] A second aspect of the present invention provides a real-time control system for land-saving micro-distribution active power, the system comprising:

[0033] The acquisition and analysis module is used to obtain various adjustable resources of different voltage levels within the jurisdiction of provincial and local distribution micro-dispatching levels, and analyze the adjustment characteristics of various adjustable resources, including adjustable capacity characteristics, AGC response time, active power shortage increase characteristics, active power sufficient reduction characteristics, economic priority, and flexibility priority;

[0034] A construction module is used to construct an AGC response time chain for all types of adjustable resources at all voltage levels based on the AGC response time, to construct an increase time chain for all types of adjustable resources at all voltage levels based on the increase characteristics of insufficient active power, and to construct a decrease time chain for all types of adjustable resources at all voltage levels based on the decrease characteristics of sufficient active power;

[0035] The calculation and control module is used to calculate the dispatch priority values of various adjustable resources participating in dispatch based on the AGC response time chain of all types and all voltage levels of adjustable resources, the time chain of increase in all types and all voltage levels of adjustable resources, and the time chain of reduction in all types and all voltage levels of adjustable resources, combined with the adjustable capacity characteristics, economic priority and flexibility priority, and to carry out real-time control of active power in accordance with the priority order corresponding to the dispatch priority values of various adjustable resources participating in dispatch, so as to build a new power system.

[0036] Optionally, the calculation and control module is configured to calculate the scheduling priority values of various adjustable resources participating in scheduling by combining the adjustable capacity characteristics, the economic priority, and the flexibility priority, including:

[0037] Combined with the adjustable capacity characteristics, economic priority and flexibility priority, the scheduling priority value P of each type of adjustable resource participating in the scheduling is calculated according to the following formula: i :

[0038]

[0039] Among them, F i is the adjustable capacity of adjustable resource i, n is the number of adjustable resources, A i is the adjustable resource capacity priority value, B i is the economic priority value of the adjustable resource, C i is the flexibility priority value of the adjustable resource, E ri D is the priority value of adjustable resource i in the time chain of increasing or decreasing adjustable resources of all types and voltage levels. ji is the priority value of adjustable resource i in the AGC response time chain of all types and voltage levels of adjustable resources, r is the category of the all types and voltage levels of adjustable resources increase time chain or the all types and voltage levels of adjustable resources decrease time chain, and j is the category of the all types and voltage levels of adjustable resources AGC response time chain.

[0040] Optionally, the calculation and control module is configured to calculate the scheduling priority values for various types of adjustable resources participating in scheduling based on the AGC response time chain of all types and voltage levels of adjustable resources, the issuance time chain of all types and voltage levels of adjustable resources, and the issuance time chain of all types and voltage levels of adjustable resources, in combination with the adjustable capacity characteristics, the economic priority, and the flexibility priority, and to perform real-time control of active power according to the priority order corresponding to the scheduling priority values of various types of adjustable resources participating in scheduling, including:

[0041] S3.1. Determine whether the grid frequency meets the first condition. If so, execute S3.3; otherwise, execute S3.2. The first condition includes the grid frequency continuously exceeding a first time threshold deviation from a reference value within a preset range of [base - Δε, base + Δε] and / or continuously exceeding a second time threshold deviation from a reference value of base.

[0042] S3.2: If the system is running stably and no active power correction is required, execute S3.1;

[0043] S3.3. Determine whether the grid frequency is lower than the base value. If so, execute S3.4; otherwise, execute S3.5.

[0044] S3.4, determine whether the grid frequency meets the second condition, if not, calculate E according to the first additional time chain E1 ri Then execute S3.6. If yes, calculate E according to the second additional issuance time chain E2. ri Then, S3.6 is executed, where the second condition includes that the grid frequency continuously exceeds a first threshold value below base-Δε for a period of time and / or continuously exceeds a second threshold value below a reference value base for a period of time;

[0045] S3.5. Determine whether the grid frequency meets the third condition. If so, calculate E according to the third reduction time chain E3. ri Then execute S3.6. If not, calculate E according to the fourth reduction time chain E4. ri Then execute S3.6; the third condition includes that the grid frequency continuously exceeds a third time threshold higher than base+Δε and / or continuously exceeds a fourth time threshold higher than a reference value base;

[0046] S3.6, determine whether the wind and solar resources are sufficient, if not, calculate D according to the first AGC response time chain D1 ji If yes, calculate D according to the second AGC response time chain D2 ji ;

[0047] S3.7, according to D ji 、E ri , combining the adjustable capacity characteristics, economic priority and flexibility priority to calculate the scheduling priority values of various adjustable resources participating in scheduling;

[0048] S3.8. Perform real-time control of active power according to the priority order corresponding to the priority values of various adjustable resources participating in the scheduling.

[0049] Optionally, the calculation and control module is used to determine whether the wind and solar resources are sufficient, including:

[0050] When the wind speed is within a preset wind speed range and / or the solar radiation is greater than or equal to a solar radiation threshold, determining that the wind and solar resources are sufficient;

[0051] When the wind speed is not within the preset wind speed range and the solar radiation is less than the solar radiation threshold, it is determined that the wind and solar resources are insufficient.

[0052] Optionally, when the calculation and control module is used to perform real-time control of active power according to the priority order corresponding to the priority values of various adjustable resources participating in scheduling, it includes:

[0053]

[0054] Among them, Power i is the active power distribution of adjustable resource i, P i is the scheduling priority value of the adjustable resource i participating in the scheduling, Power total is the total distributable active power of the system.

[0055] The third aspect of the present invention provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the computer program is loaded into the processor, the method for real-time control of active power of micro-distribution in a land-saving manner is implemented.

[0056] A fourth aspect of the present invention provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the above-mentioned method for real-time control of active power of micro-distribution in a land-saving manner.

[0057] Compared with the prior art, the beneficial effects of the present invention include at least:

[0058] The present invention considers the regulation characteristics of various adjustable resources, including thermal power plants, photovoltaic power generation, wind power generation, energy storage power plants, industrial parks, dam-type hydropower plants, thermal storage power plants and flexible loads, and comprehensively analyzes the internal resources of the province's power system.

[0059] The present invention simultaneously considers the priority mechanism of adjustable resources at multiple voltage levels of provincial and local distribution microgrids, from provincial 500kV / 220kV to municipal distribution network 66kV / 10kV and then to park-level microgrid 380V / 220V, conducts in-depth analysis of the regulation characteristics of adjustable resources at different voltage levels and then considers their priority mechanism, which is conducive to the construction and development of new power systems.

[0060] The present invention analyzes the regulation characteristics of adjustable resources at different time scales, from the seconds and minutes of the AGC's fast response to the hours and days of the slower response. It comprehensively and systematically analyzes the priority mechanism of multiple adjustable resources based on the length of response time, which has certain reference value for the construction of new power systems. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort. Among them:

[0062] Figure 1 This is a flow chart of a method for real-time control of active power of a land-saving micro-equipment provided by an embodiment of the present invention;

[0063] Figure 2 This is a schematic diagram of an adjustable resource AGC response time chain when wind and solar resources are sufficient, provided by an embodiment of the present invention;

[0064] Figure 3 This is a schematic diagram of an adjustable resource AGC response time chain when wind and solar resources are insufficient, provided by an embodiment of the present invention;

[0065] Figure 4 This is a schematic diagram of a time chain for additional issuance of a small amount of insufficient active power of an adjustable resource, provided by an embodiment of the present invention;

[0066] Figure 5 This is a schematic diagram of a time chain for additional issuance of adjustable resources due to severe active power shortage, provided by an embodiment of the present invention;

[0067] Figure 6 This is a schematic diagram of a time chain for a small amount of power reduction with sufficient active power of an adjustable resource, provided by an embodiment of the present invention;

[0068] Figure 7 This is a schematic diagram of a time chain for a large amount of power reduction when the active power of an adjustable resource is sufficient, provided by an embodiment of the present invention;

[0069] Figure 8 The present invention provides a flowchart of calculating the priority value of an adjustable resource. DETAILED DESCRIPTION

[0070] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. The embodiments described in this application are only part of the embodiments of the present invention, not all of them. Based on the spirit of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0071] Combine Figures 1 to 8 As shown, embodiment 1 of the present invention provides a method for real-time control of active power of micro-distribution in a land-saving manner, comprising the following steps:

[0072] S1. Obtain various adjustable resources of different voltage levels within the jurisdiction of provincial and local distribution micro-dispatching levels, and analyze the regulation characteristics of various adjustable resources.

[0073] Specifically, various adjustable resources include at least one of the following: centralized photovoltaic power plants, centralized wind farms, small industrial parks, distributed photovoltaic units, distributed wind power units, dam-type hydropower plants, energy storage plants, thermal power plants, thermal storage plants, and user loads. Adjustment characteristics include adjustable capacity, AGC response time, increased generation when active power is insufficient, reduced generation when active power is sufficient, and the economic efficiency and flexibility of the adjustable resource's participation in regulation.

[0074] S1 specifically includes:

[0075] S1.1. Analyze the regulation characteristics of various adjustable resources at different voltage levels.

[0076] Specifically, the regulation characteristics of adjustable resources at different voltage levels, namely the vertical characteristics among the horizontal and vertical regulation characteristics of the provincial, local, distribution and micro-integrated power system, have a direct impact on the adaptability and flexibility of the power grid. The regulation of high-voltage adjustable resources is often more complicated, but it occupies a core position in power grid dispatching and is responsible for maintaining the voltage stability of the entire power grid; while low-voltage adjustable resources, such as the regulation of distribution networks, are more flexible and can respond quickly to local load changes.

[0077] To reduce transmission losses, large thermal power plants often operate at high voltage levels. In this embodiment, the voltage levels are 220 / 500 kV, and the installed capacity of a single unit is generally 300 / 600 MW. Compared to other adjustable resources, thermal power plants have higher regulation costs and lower flexibility.

[0078] The inverter output voltage of centralized photovoltaic power plants and centralized wind farms is typically 10 / 35 / 66 kV. This voltage level is often the distribution voltage within these power plants and wind farms. However, to allow for the grid connection of excess power when wind and solar resources are abundant, the grid-connected transmission voltage is typically 220 / 500 kV. The total installed capacity of a single photovoltaic power plant and wind farm ranges from 30 to 200 MW. Overall, centralized photovoltaic power plants and centralized wind farms can operate between provincial power grids and local distribution networks, offering considerable flexibility.

[0079] Energy storage power plants are typically located in distribution networks, operating at 10 / 35kV voltage levels and with a total installed capacity of 50-100MW. Given their need to rapidly contribute to system peak-load shifting and valley-loading, their storage capacity limits are typically between 20% and 90%, enabling rapid response to load regulation needs. Energy storage power plants can store energy when the supply is sufficient and release it for power supply during periods of low demand, making them a crucial component of peak-load shifting and valley-loading.

[0080] Small and medium-sized dam-type hydropower stations are located in the distribution network, with voltage levels typically at 35 / 66 kV and capacities typically ranging from 5 to 50 MW. Large hydropower stations with cross-regional regulation are not considered in this example. Thermal storage power plants, similar to thermal power plants, have voltage levels ranging from 10 / 35 / 66 kV for distribution networks to 220 / 500 kV for grid transmission, with capacities typically ranging from 50 to 100 MW. In this example, dam-type hydropower plants and thermal storage power plants are similar in that both can flexibly participate in power system demand response.

[0081] Small industrial parks are located within microgrids, operating at 220 / 380V. These parks contain small energy storage devices and generators, typically ranging in capacity from tens of kW to several MW, and can participate in some demand response efforts. Distributed photovoltaic and wind power units, also located within microgrids, operate at 220 / 380V. Their individual capacities are small, typically ranging from tens to hundreds of watts. Due to the high randomness of these distributed units, which are primarily used for self-use, they generally lack the ability to participate in dispatch.

[0082] Based on the above analysis, in a preferred embodiment of the present invention:

[0083] For provincial power grids, adjustable resources include at least one of the following: large thermal power plants, centralized photovoltaic power stations and centralized wind farms; for municipal distribution networks, adjustable resources include at least one of the following: energy storage power plants, dam-type hydropower stations and thermal storage power plants; for microgrids, adjustable resources include at least one of the following: small industrial parks, distributed photovoltaic units, distributed wind power units and user loads.

[0084] Among them, the adjustable resources of provincial power grids have the characteristics of high voltage, large capacity and low flexibility; the adjustable resources of municipal distribution networks have the characteristics of higher voltage, larger capacity and higher flexibility; and the adjustable resources of microgrids have the characteristics of low voltage, small capacity and high flexibility.

[0085] S1.2. Analyze the adjustment characteristics of adjustable resources at different time scales.

[0086] Specifically, the characteristics of adjustable resources at different time scales, namely the horizontal characteristics of the horizontal and vertical regulation characteristics of the provincial, regional, and micro-distribution integrated power system, are mainly determined by the load variation patterns of the power grid and the urgency of the regulation needs. From seconds to days, the regulation methods gradually change from rapid response and automated control to longer-term prediction and scheduling. Short time scales (seconds and minutes) mainly rely on fast-response resources such as energy storage systems, frequency-regulating generators, and automation equipment, while longer time scales (hours and days) rely on the scheduling of generators, energy storage management, and inter-regional power scheduling to achieve balance and stability.

[0087] For modern thermal power plants, the AGC response time is between 10 seconds and 1 minute. However, in the face of large load fluctuations, considering that thermal power plants require a certain amount of time to respond to a large increase in power generation, it still takes a long time to stabilize the load fluctuations.

[0088] The AGC response time of centralized photovoltaic power stations and centralized wind farms is at the minute level, generally 1 to 2 minutes, but the output of wind and solar power is limited by natural conditions. Therefore, AGC needs to have a certain predictive capability, that is, to make advance predictions on wind and solar power generation.

[0089] Compared with thermal power plants and centralized wind and solar power plants, the AGC response time of energy storage power plants is very fast and can quickly adjust load demand. The response time is generally within a few seconds, and it has excellent demand response and adjustment capabilities.

[0090] The AGC response capability of dam-type hydropower plants is limited by the reservoir's water storage capacity and runoff flow, with response times typically ranging from one to several minutes. The AGC response capability of thermal storage power plants is affected by the medium's thermal energy conversion efficiency, also ranging from one to several minutes.

[0091] Small industrial parks contain a small amount of energy storage, which has similar AGC response times to energy storage power plants, but is smaller and can only participate in a small amount of regulation. Distributed photovoltaic units and distributed wind power units generally do not participate in demand response and lack AGC response capabilities.

[0092] S1.3. Analyze the economy and flexibility of adjustable resources at the same level.

[0093] Specifically, economic efficiency is a key consideration in grid dispatch. The priority of adjustable resources is often related to their operating costs, and resource regulation should prioritize options with low operating costs and high efficiency. Renewable energy resources should be prioritized whenever possible, especially during periods of low electricity demand or when wind and solar energy are plentiful. Using these resources not only benefits the environment but also reduces power generation costs. While thermal power units typically have large generating capacities, their regulation costs are high and their environmental impact is significant. Therefore, in economic dispatch, they are often prioritized for long-term operation over rapid regulation.

[0094] In this embodiment, considering the economic efficiency of adjustable resource scheduling, the adjustment priority of each adjustable resource is as follows: thermal power plant: energy storage power plant: dam-type hydropower station: thermal storage power plant: small industrial park: user load: centralized photovoltaic power station: centralized wind farm: distributed photovoltaic unit: distributed wind power unit = 4:2:2:2:2:2:1:1:1:1. Lower priority values indicate higher economic efficiency.

[0095] Energy storage systems typically have a very wide adjustment range and can complete the charging and discharging process in a short period of time. Therefore, when the power grid requires rapid and precise adjustment, energy storage systems are usually called upon first. User flexible loads can also participate in peak-shaving and valley-filling grid scheduling. For example, electric vehicles can charge and store electricity when active power is sufficient, and release electricity when active power is insufficient. Hydropower units typically have high adjustment flexibility and can quickly increase or decrease output power, making them suitable for providing support during periods of large load fluctuations. Thermal storage power plants have strong rapid response capabilities and can quickly adjust power generation according to grid demand. They are generally energy efficient and can balance electricity supply and demand, making them suitable for use in combination with renewable energy sources such as solar and wind power.

[0096] In this embodiment, considering the flexibility of adjustable resources participating in scheduling, the adjustment priority values of each adjustable resource are as follows: user load: distributed photovoltaic unit: distributed wind power unit: centralized photovoltaic power station: centralized wind farm: thermal power plant: small industrial park: dam-type hydropower station: thermal storage power plant: energy storage power plant = 8:8:8:4:4:4:4:2:2:1.

[0097] S2. Construct an AGC response time chain for all types of adjustable resources with all voltage levels based on the AGC response time; construct an increase time chain for all types of adjustable resources with all voltage levels based on the increase characteristics of insufficient active power; construct a decrease time chain for all types of adjustable resources with all voltage levels based on the decrease characteristics of sufficient active power.

[0098] S2.1. Construct an AGC response time chain of all types and voltage levels of adjustable resources based on the AGC response time.

[0099] Optionally, the all-type and all-voltage-level adjustable resource AGC response time chain includes a first AGC response time chain D1 and a second AGC response time chain D2.

[0100] Specifically, the adjustable resource priority values in the first AGC response time chain D1 are as follows: energy storage power plant: thermal power plant: dam-type hydropower station: thermal storage power plant: small industrial park: user load: centralized photovoltaic power station: centralized wind farm: distributed photovoltaic unit: distributed wind power unit = 1:2:4:4:8:8:8:8:16:16.

[0101] The priority values of the adjustable resources in the second AGC response time chain D2 are as follows: energy storage power plant: thermal power plant: centralized photovoltaic power station: centralized wind farm: dam-type hydropower plant: thermal storage power plant: small industrial park: user load: distributed photovoltaic unit: distributed wind power unit = 1:2:3:3:4:4:8:8:16:16.

[0102] Specifically, for the new integrated provincial, local and micro-distribution power system, when the system fluctuates, it is necessary to consider smoothing the fluctuations in a relatively short period of time to maintain the stable operation of the power system. Energy storage power plants have excellent short-term active AGC response performance and can respond to demand regulation within seconds, so they are the first choice for regulation.

[0103] The AGC response speed of modern thermal power plants is between 10 seconds and 1 minute, which is slower than that of energy storage power plants, but still has good advantages over other power generation units. Thermal power generation is very stable and is not subject to restrictions such as energy storage capacity and natural weather conditions.

[0104] The AGC response time of centralized photovoltaic power stations and centralized wind farms is generally 1 to 2 minutes, which are relatively fast response units. However, wind and solar power generation is heavily dependent on natural weather. Therefore, the response order is high when wind and solar resources are sufficient, but the response order is low when wind and solar resources are insufficient.

[0105] Dam-type hydropower plants are highly efficient in short-term load regulation, with AGC (Automated Generator Control) responding to load fluctuations within minutes to ensure stable grid operation. Dam-type hydropower plants are also considered a green energy source with minimal pollution, and therefore receive a high regulation priority. Thermal energy storage power plants, with an AGC response time of several minutes, are often used in conjunction with clean energy sources. Their rapid response to load fluctuations generally places them below dam-type hydropower plants in regulation priority.

[0106] Small industrial parks are located in microgrids with lower voltage levels. They typically contain energy storage devices and distributed energy units, but their small size results in a slow response to AGC. Consumer loads can participate in peak-load shifting and valley-loading according to policies, but their small size and uncertainty make power delivery to the AGC inefficient.

[0107] Distributed photovoltaic units and distributed wind power units are mostly self-generated and self-used, so they basically have no AGC response capability.

[0108] S2.2. Build a time chain for additional issuance of all types of adjustable resources at all voltage levels based on the characteristics of additional issuance of insufficient active power.

[0109] Optionally, the all-type and all-voltage-level adjustable resource additional issuance time chain includes a first additional issuance time chain E1 and a second additional issuance time chain E2.

[0110] Specifically, the specific issuance speed priority of the adjustable resources in the first issuance time chain E1 is as follows: energy storage power plant: small industrial park: centralized photovoltaic power station: centralized wind farm: dam-type hydropower station: thermal storage power plant: thermal power plant: user load: distributed photovoltaic unit: distributed wind power unit = 1:2:3:3:4:4:8:8:8:8.

[0111] The specific issuance speed priority of the adjustable resources in the second issuance time chain E2 is as follows: energy storage power plant: dam-type hydropower station: thermal storage power plant: thermal power plant: small industrial park: centralized photovoltaic power station: centralized wind farm: user load: distributed photovoltaic unit: distributed wind power unit = 1:3:3:4:8:8:8:16:16:16.

[0112] Specifically, when active power is insufficient, rapid output is crucial to ensure stable power system operation. Energy storage plants can quickly deliver stored energy to the power system, giving them a higher priority. Small industrial parks also contain some energy storage, which can contribute to the grid connection and regulate active power demand. If active power is only slightly insufficient, the energy storage contained in small industrial parks can significantly impact balancing fluctuations, giving them a higher priority. If active power is significantly insufficient, the energy storage contained in small industrial parks will have a smaller impact on the overall situation, while a large-scale contribution will affect the normal operation of the park, giving them a lower priority.

[0113] When wind and solar resources are plentiful, centralized wind farms and photovoltaic power stations can absorb large amounts of wind and solar energy, providing significant amounts of active power to the power system. Wind and solar power generation is clean and pollution-free, offering significant environmental benefits. However, when wind and solar resources are insufficient, centralized wind farms and photovoltaic power stations are unable to provide significant amounts of active power, requiring the participation of other power generation units to balance active power demand. Distributed wind and solar units are small, highly random, and mostly self-sufficient. They rarely connect to the grid to participate in peak-load shifting and valley-loading operations, making them unable to provide power output when active power is insufficient. Therefore, they receive the lowest priority.

[0114] Both dam-type hydropower stations and thermal storage power plants can supply electricity quickly when the demand for active power is large, and are environmentally friendly. If there are sufficient wind and solar resources, their priority will be after centralized wind and solar power generation; if there are insufficient wind and solar resources, their priority will be before centralized wind and solar power generation.

[0115] Thermal power plants can provide more output to maintain stable system operation when active power is insufficient. However, due to the high complexity of their units, thermal power generation requires a large amount of coal, oil and other resources to increase output. It is less economical and has environmental pollution. Therefore, it ranks last among the units that can output power.

[0116] User loads can participate in peak-shaving and valley-filling according to policies or tiered electricity prices, but this is highly random and it is difficult to provide a large amount of active power in a short period of time, which cannot meet the system's active power requirements.

[0117] S2.3. Construct a time chain for reducing power generation of all types and voltage levels of adjustable resources based on the characteristics of sufficient active power reduction.

[0118] Optionally, the all-type and all-voltage-level adjustable resource generation reduction time chain includes a third generation reduction time chain E3 and a fourth generation reduction time chain E4;

[0119] Specifically, the priority order for small-scale reduction of adjustable resources in the third reduction time chain E3 is as follows: energy storage power station: small industrial park: thermal power plant: centralized photovoltaic power station: centralized wind farm: user load: dam-type hydropower station: thermal storage power plant: distributed photovoltaic unit: distributed wind power unit = 1:2:3:4:4:6:8:8:16:16.

[0120] The specific large-scale reduction priority of adjustable resources in the fourth reduction time chain E4 is as follows: energy storage power station: thermal power plant: user load: centralized photovoltaic power station: centralized wind farm: small industrial park: dam-type hydropower station: thermal storage power plant: distributed photovoltaic unit: distributed wind power unit = 1:2:4:4:4:8:8:8:16:16.

[0121] Specifically, when active power is sufficient, priority is given to storing excess electricity in energy storage plants for use when active power demand is high. Similarly, a small amount of energy storage in a small industrial park can also store some of the excess electricity. If there is only a small surplus of active power, the energy storage contained in the small industrial park can have a significant impact on balancing fluctuations, so the small industrial park has a higher priority. If there is a large surplus of active power, the energy storage capacity contained in the small industrial park has a smaller impact on the overall situation. If a large amount of energy storage is involved, it will affect the normal operation of the park and thus have a lower priority.

[0122] Thermal power generation is highly polluting. When active power is sufficient, thermal power generation can be appropriately reduced within permitted limits to reduce pollutant emissions. If there is a significant surplus of active power, priority should be given to reducing thermal power plant output to reduce fossil fuel use and minimize environmental pollution. If there is only a small surplus of active power, constantly adjusting thermal power plant output will only result in economic losses.

[0123] Centralized photovoltaic and wind turbines can be appropriately reduced in their grid connection when active power is sufficient, and their priority should be after thermal power generation. Distributed photovoltaic and wind turbines are small in size and are largely unable to participate in the grid's peak-shaving and valley-filling operations, so they are given the lowest priority.

[0124] Dam-type hydropower stations can pump water into reservoirs to store electrical energy when there is sufficient active power, while thermal storage power plants store excess electrical energy through heating media. Both have strong demand response capabilities and are environmentally friendly.

[0125] Users' flexible loads can participate in peak-shaving and valley-filling. If the reduction in active power is small, considering the uncertainty of users' participation in scheduling, their priority should be after dam-type hydropower plants and thermal storage power plants. If the reduction in active power is large, appropriate policies can be used to encourage users to use more electricity when active power is sufficient, so their priority is relatively high.

[0126] S3. Based on the AGC response time chain of all types and voltage levels of adjustable resources, the time chain of additional issuance of all types and voltage levels of adjustable resources, and the time chain of reduced issuance of all types and voltage levels of adjustable resources, combined with the adjustable capacity characteristics, economic priority and flexibility priority, the dispatch priority values of various types of adjustable resources participating in the dispatch are calculated, and the active power is controlled in real time according to the priority order corresponding to the dispatch priority values of various types of adjustable resources participating in the dispatch, so as to build a new power system.

[0127] Combine Figure 8 As shown, S3 specifically includes:

[0128] S3.0. Real-time collection of various dispatching data and meteorological information within the jurisdiction of the embodiment, including but not limited to active load, grid frequency, AGC real-time information, wind speed, and solar radiation;

[0129] S3.1. Determine whether the grid frequency meets the first condition. If so, execute S3.3; otherwise, execute S3.2. The first condition includes the grid frequency continuously exceeding a first time threshold deviation from a reference value within a preset range of [base - Δε, base + Δε] and / or continuously exceeding a second time threshold deviation from a reference value of base.

[0130] S3.2: If the system is running stably and no active power correction is required, execute S3.1;

[0131] S3.3. Determine whether the grid frequency is lower than the base value. If so, execute S3.4; otherwise, execute S3.5.

[0132] S3.4, determine whether the grid frequency meets the second condition, if not, calculate E according to the first additional time chain E1 ri Then execute S3.6. If yes, calculate E according to the second additional issuance time chain E2. ri Then, S3.6 is executed, where the second condition includes that the grid frequency continuously exceeds a first threshold value below base-Δε for a period of time and / or continuously exceeds a second threshold value below a reference value base for a period of time;

[0133] S3.5, determine whether the grid frequency meets the third condition, if so, calculate E according to the third reduction time chain E3 ri Then execute S3.6. If not, calculate E according to the fourth reduction time chain E4. ri Then execute S3.6; the third condition includes that the grid frequency continuously exceeds the first time threshold value higher than base+Δε and / or continuously exceeds the second time threshold value higher than the reference value base;

[0134] S3.6, determine whether the wind and solar resources are sufficient, if not, calculate D according to the first AGC response time chain D1 ji If so, calculate D according to the second AGC response time chain D2 ji ;

[0135] S3.7, according to D ji 、E ri , combining the adjustable capacity characteristics, economic priority and flexibility priority to calculate the scheduling priority values of various adjustable resources participating in scheduling;

[0136] S3.8. Perform real-time control of active power according to the priority order corresponding to the priority values of various adjustable resources participating in the scheduling.

[0137] Optionally, the first time threshold is greater than the second time threshold.

[0138] Specifically, the base value base is usually 50Hz, Δε is the offset of the base value, which can be 0.2Hz, the first time threshold is 1 hour, the second time threshold is 15 minutes, the third time threshold is 1 hour, and the fourth time threshold is 15 minutes. Figure 4 The active power shortage additional issuance time chain shown is an embodiment of the first additional issuance time chain E1. Figure 5 The time chain of the additional issuance of active power with serious shortage is an embodiment of the second additional issuance time chain E2. Figure 6 The active power sufficient small amount reduction time chain shown is an embodiment of the third reduction time chain E3. Figure 7 The illustrated time chain of sufficient and large reduction in active power generation is an embodiment of the fourth reduction time chain E4.

[0139] In this way, the order of increasing power generation is determined according to the degree of active power shortage, and different priority values of increasing power generation are determined according to the order; the order of reducing power generation is determined according to the degree of active power sufficiency, and different priority values of reducing power generation are determined according to the order, so as to obtain a better power system scheduling method with more comprehensive considerations and higher scheduling efficiency.

[0140] It should be noted that those skilled in the art can set the specific values of Δε, the first time threshold, the second time threshold, the third time threshold and the fourth time threshold according to the actual situation. The embodiment of the present invention does not limit the specific values of Δε, the first time threshold, the second time threshold, the third time threshold and the fourth time threshold.

[0141] Optionally, when the wind speed is within a preset wind speed range and / or the solar radiation is greater than or equal to a solar radiation threshold, the wind and solar resources are determined to be sufficient; when the wind speed is not within the preset wind speed range and the solar radiation is less than the solar radiation threshold, the wind and solar resources are determined to be insufficient.

[0142] Specifically, the preset wind speed range is 10m / s to 25m / s; the solar radiation threshold is 0.15kWh / m 2 .like Figure 2 The AGC response time chain shown when the wind and solar resources are sufficient is an embodiment of the first AGC response time chain. Figure 3 The AGC response time chain shown when wind and solar resources are insufficient is an embodiment of the second AGC response time chain.

[0143] In this way, by distinguishing the order of responses according to wind and solar resources and determining different response priority values according to the order of responses, a more efficient power system dispatching method can be obtained with more comprehensive considerations and higher dispatching efficiency.

[0144] It should be noted that those skilled in the art can set the specific values of the preset wind speed range and solar radiation threshold according to actual land-saving conditions. The embodiments of the present invention do not limit the specific values of the preset wind speed range and solar radiation threshold.

[0145] Optionally, in S3, the scheduling priority value P of each type of adjustable resource participating in the scheduling is calculated according to the following formula: i :

[0146]

[0147] Among them, F i is the adjustable capacity of adjustable resource i, n is the number of adjustable resources, A i is the adjustable resource capacity priority value, B i is the economic priority value of the adjustable resource, C iis the flexibility priority value of the adjustable resource, E ri D is the priority value of adjustable resource i in the time chain of increasing or decreasing adjustable resources of all types and voltage levels. ji is the priority value of adjustable resource i in the AGC response time chain of all types and voltage levels of adjustable resources, r is the category of the all types and voltage levels of adjustable resources increase time chain or the all types and voltage levels of adjustable resources decrease time chain, and j is the category of the all types and voltage levels of adjustable resources AGC response time chain.

[0148] It can be understood that the scheduling priority value P of various adjustable resources participating in the scheduling i The younger the group, the more priority they will have in the transfer.

[0149] Optionally, in S3, active power is controlled in real time according to the priority order corresponding to the priority values of various adjustable resources participating in the scheduling, including:

[0150]

[0151] Among them, Power i is the active power distribution of adjustable resource i, P i is the scheduling priority value of the adjustable resource i participating in the scheduling, Power total is the total distributable active power of the system.

[0152] In this embodiment, by comprehensively considering the regulation characteristics of adjustable resources at different voltage levels and different time scales, a real-time active power control priority mechanism of the provincial, local, and micro-distribution integrated power system is derived, which comprehensively coordinates the province's adjustable resources and promotes the construction of a new power system.

[0153] Embodiment 2 of the present invention provides a real-time control system for local-scale micro-power distribution, which runs the real-time control method for local-scale micro-power distribution as described in embodiment 1. The system includes:

[0154] The acquisition and analysis module is used to obtain various adjustable resources of different voltage levels within the jurisdiction of provincial and local distribution micro-dispatching levels, and analyze the adjustment characteristics of various adjustable resources, including adjustable capacity characteristics, AGC response time, active power shortage increase characteristics, active power sufficient reduction characteristics, economic priority, and flexibility priority;

[0155] A construction module is used to construct an AGC response time chain for all types of adjustable resources at all voltage levels based on the AGC response time, to construct an increase time chain for all types of adjustable resources at all voltage levels based on the increase characteristics of insufficient active power, and to construct a decrease time chain for all types of adjustable resources at all voltage levels based on the decrease characteristics of sufficient active power;

[0156] The calculation and control module is used to calculate the dispatch priority values of various adjustable resources participating in dispatch based on the AGC response time chain of all types and all voltage levels of adjustable resources, the time chain of increase in all types and all voltage levels of adjustable resources, and the time chain of reduction in all types and all voltage levels of adjustable resources, combined with the adjustable capacity characteristics, economic priority and flexibility priority, and to carry out real-time control of active power in accordance with the priority order corresponding to the dispatch priority values of various adjustable resources participating in dispatch, so as to build a new power system.

[0157] Embodiment 3 of the present invention provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the computer program is loaded into the processor, the method for real-time control of active power of micro-distribution in a land-saving manner described in embodiment 1 is implemented.

[0158] Embodiment 4 of the present invention provides a computer-readable storage medium storing a computer program. When the computer program is executed by a processor, the method for real-time control of active power of micro-distribution in accordance with embodiment 1 is implemented.

[0159] Compared with the prior art, the beneficial effects of the present invention include at least:

[0160] The present invention considers the regulation characteristics of various adjustable resources, including thermal power plants, photovoltaic power generation, wind power generation, energy storage power plants, industrial parks, dam-type hydropower plants, thermal storage power plants and flexible loads, and comprehensively analyzes the internal resources of the province's power system.

[0161] The present invention simultaneously considers the priority mechanism of adjustable resources at multiple voltage levels of provincial and local distribution microgrids, from provincial 500kV / 220kV to municipal distribution network 66kV / 10kV and then to park-level microgrid 380V / 220V, conducts in-depth analysis of the regulation characteristics of adjustable resources at different voltage levels and then considers their priority mechanism, which is conducive to the construction and development of new power systems.

[0162] The present invention analyzes the regulation characteristics of adjustable resources at different time scales, from the seconds and minutes of the AGC's fast response to the hours and days of the slower response. It comprehensively and systematically analyzes the priority mechanism of multiple adjustable resources based on the length of response time, which has certain reference value for the construction of new power systems.

[0163] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0164] The present disclosure may be a system, method and / or computer program product. The computer program product may include a computer-readable storage medium carrying computer-readable program instructions for causing a processor to implement various aspects of the present disclosure.

[0165] A computer-readable storage medium can be a tangible device that can hold and store instructions for use by an instruction execution device. A computer-readable storage medium can be, for example, but not limited to, an electrical storage device, a magnetic storage device, an optical storage device, an electromagnetic storage device, a semiconductor storage device, or any suitable combination thereof. More specific examples (a non-exhaustive list) of computer-readable storage media include: a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a static random access memory (SRAM), a portable compact disc read-only memory (CD-ROM), a digital versatile disk (DVD), a memory stick, a floppy disk, a mechanical encoding device, such as a punch card or a raised structure in a groove on which instructions are stored, and any suitable combination thereof. As used herein, a computer-readable storage medium is not to be construed as a transient signal per se, such as a radio wave or other freely propagating electromagnetic wave, an electromagnetic wave propagating through a waveguide or other transmission medium (e.g., a light pulse through a fiber optic cable), or an electrical signal transmitted through an electrical wire.

[0166] The computer-readable program instructions described herein can be downloaded from a computer-readable storage medium to each computing / processing device, or downloaded to an external computer or external storage device via a network, such as the Internet, a local area network, a wide area network, and / or a wireless network. The network can include copper transmission cables, fiber optic transmission, wireless transmission, routers, firewalls, switches, gateway computers, and / or edge servers. The network adapter card or network interface in each computing / processing device receives the computer-readable program instructions from the network and forwards the computer-readable program instructions to be stored in the computer-readable storage medium in each computing / processing device.

[0167] The computer program instructions for performing the operations of the present disclosure may be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-dependent instructions, microcode, firmware instructions, state setting data, or source code or object code written in any combination of one or more programming languages, including object-oriented programming languages such as Smalltalk, C++, and conventional procedural programming languages such as "C" language or similar programming languages. Computer-readable program instructions may be executed entirely on a user's computer, partially on a user's computer, as an independent software package, partially on a user's computer, partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer via any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., utilizing an Internet service provider to connect via the Internet). In some embodiments, an electronic circuit, such as a programmable logic circuit, a field programmable gate array (FPGA), or a programmable logic array (PLA), may be personalized by utilizing the state information of the computer-readable program instructions. The electronic circuit may execute the computer-readable program instructions, thereby realizing various aspects of the present disclosure.

[0168] Finally, 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 above embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered by the scope of protection of the claims of the present invention.

Claims

1. A real-time control method for micro-active power distribution in a land-saving manner, characterized in that: include: Obtain various adjustable resources of different voltage levels within the jurisdiction of provincial and local micro-dispatching systems, and analyze the adjustment characteristics of various adjustable resources, including adjustable capacity characteristics, AGC response time, active power shortage increase characteristics, active power sufficient reduction characteristics, economy and flexibility; Build an AGC response time chain for all types of adjustable resources at all voltage levels based on the AGC response time; build an increase time chain for all types of adjustable resources at all voltage levels based on the increase characteristics of insufficient active power; build a decrease time chain for all types of adjustable resources at all voltage levels based on the decrease characteristics of sufficient active power; Based on the AGC response time chain of all types and all voltage levels of adjustable resources, the time chain of additional issuance of all types and all voltage levels of adjustable resources, and the time chain of reduced issuance of all types and all voltage levels of adjustable resources, combined with the adjustable capacity characteristics, economic priority and flexibility priority, the dispatching priority values of various types of adjustable resources participating in dispatching are calculated, and the active power is controlled in real time according to the priority order corresponding to the dispatching priority values of various types of adjustable resources participating in dispatching.

2. The method for real-time control of active power of micro-distribution in a land-saving manner according to claim 1, characterized in that: Combined with the adjustable capacity characteristics, economic priority and flexibility priority, the scheduling priority value P of each type of adjustable resource participating in the scheduling is calculated according to the following formula: i : Among them, F i is the adjustable capacity of adjustable resource i, n is the number of adjustable resources, A i is the adjustable resource capacity priority value, B i is the economic priority value of the adjustable resource, C i is the flexibility priority value of the adjustable resource, E ri D is the priority value of adjustable resource i in the time chain of increasing or decreasing adjustable resources of all types and voltage levels. ji is the priority value of adjustable resource i in the AGC response time chain of all types and voltage levels of adjustable resources, r is the category of the all types and voltage levels of adjustable resources increase time chain or the all types and voltage levels of adjustable resources decrease time chain, and j is the category of the all types and voltage levels of adjustable resources AGC response time chain.

3. The method for real-time control of active power of micro-distribution in a land-saving manner according to claim 2, characterized in that: Based on the AGC response time chain of all types and voltage levels of adjustable resources, the time chain of increase in all types and voltage levels of adjustable resources, and the time chain of decrease in all types and voltage levels of adjustable resources, the dispatch priority values of various types of adjustable resources participating in the dispatch are calculated in combination with the adjustable capacity characteristics, economic priority, and flexibility priority. The active power is then controlled in real time according to the priority order corresponding to the dispatch priority values of various types of adjustable resources participating in the dispatch, including: S3.

1. Determine whether the grid frequency meets the first condition. If so, execute S3.3; otherwise, execute S3.

2. The first condition includes that the grid frequency continuously exceeds the first time threshold and deviates from the preset range of the reference value. [base-Δε, base+Δε] and / or continuously exceeds the second time threshold value and deviates from the reference value base; S3.2: If the system is running stably and no active power correction is required, execute S3.

1. S3.

3. Determine whether the grid frequency is lower than the reference value base. If so, execute S3.4; otherwise, execute S3.

5. S3.4, determine whether the grid frequency meets the second condition, if not, calculate E according to the first additional time chain E1 ri Then execute S3.

6. If yes, calculate E according to the second additional issuance time chain E2. ri Then, S3.6 is executed, where the second condition includes that the grid frequency continuously exceeds a first threshold value below base-Δε for a period of time and / or continuously exceeds a second threshold value below a reference value base for a period of time; S3.

5. Determine whether the grid frequency meets the third condition. If so, calculate E according to the third reduction time chain E3. ri Then execute S3.

6. If not, calculate E according to the fourth reduction time chain E4. ri Then execute S3.6; the third condition includes that the grid frequency continuously exceeds a third time threshold higher than base+Δε and / or continuously exceeds a fourth time threshold higher than a reference value base; S3.6, determine whether the wind and solar resources are sufficient, if not, calculate D according to the first AGC response time chain D1 ji If yes, calculate D according to the second AGC response time chain D2 ji ; S3.7, according to D ji 、E ri , combining the adjustable capacity characteristics, economic priority and flexibility priority to calculate the scheduling priority values of various adjustable resources participating in scheduling; S3.

8. Perform real-time control of active power according to the priority order corresponding to the priority values of various adjustable resources participating in the scheduling.

4. The method for real-time control of active power of micro-distribution in a land-saving manner according to claim 3, characterized in that: When the wind speed is within a preset wind speed range and / or the solar radiation is greater than or equal to a solar radiation threshold, determining that the wind and solar resources are sufficient; When the wind speed is not within the preset wind speed range and the solar radiation is less than the solar radiation threshold, it is determined that the wind and solar resources are insufficient.

5. The method for real-time control of active power of micro-distribution in a land-saving manner according to claim 1, characterized in that: Real-time control of active power is performed according to the priority order corresponding to the priority values of various adjustable resources participating in the scheduling, including: Among them, Power i is the active power distribution of adjustable resource i, P i is the scheduling priority value of the adjustable resource i participating in the scheduling, Power total is the total distributable active power of the system.

6. The method for real-time control of active power of micro-distribution in a low-energy environment according to claim 1, characterized in that: For provincial power grids, adjustable resources include at least one of the following: large thermal power plants, centralized photovoltaic power stations and centralized wind farms; for municipal distribution networks, adjustable resources include at least one of the following: energy storage power plants, dam-type hydropower stations and thermal storage power plants; for microgrids, adjustable resources include at least one of the following: small industrial parks, distributed photovoltaic units, distributed wind power units and user loads.

7. The method for real-time control of active power of micro-distribution in a low-energy environment according to claim 1, characterized in that: The regulation characteristics include horizontal characteristics and vertical characteristics. The horizontal characteristics refer to the different regulation characteristics of adjustable resources at different time scales at the same voltage level, and the vertical characteristics refer to the different regulation characteristics of adjustable resources at different voltage levels at the same time scale.

8. A real-time control system for saving local distribution and micro-active power using the real-time control method for saving local distribution and micro-active power according to any one of claims 1 to 7, characterized in that: The system comprises: The acquisition and analysis module is used to obtain various adjustable resources of different voltage levels within the jurisdiction of provincial and local distribution micro-dispatching levels, and analyze the adjustment characteristics of various adjustable resources, including adjustable capacity characteristics, AGC response time, active power shortage increase characteristics, active power sufficient reduction characteristics, economic priority, and flexibility priority; A construction module is used to construct an AGC response time chain for all types of adjustable resources at all voltage levels based on the AGC response time, to construct an increase time chain for all types of adjustable resources at all voltage levels based on the increase characteristics of insufficient active power, and to construct a decrease time chain for all types of adjustable resources at all voltage levels based on the decrease characteristics of sufficient active power; The calculation and control module is used to calculate the scheduling priority values of various types of adjustable resources participating in scheduling based on the AGC response time chain of all types and all voltage levels of adjustable resources, the time chain of increase in all types and all voltage levels of adjustable resources, and the time chain of reduction in all types and all voltage levels of adjustable resources, combined with the adjustable capacity characteristics, economic priority and flexibility priority, and to perform real-time control of active power according to the priority order corresponding to the scheduling priority values of various types of adjustable resources participating in scheduling.

9. The real-time control system for saving land distribution and micro-active power according to claim 8 is characterized in that: The calculation and control module is used to calculate the scheduling priority values of various adjustable resources participating in scheduling by combining the adjustable capacity characteristics, economic priority, and flexibility priority, including: Combined with the adjustable capacity characteristics, economic priority and flexibility priority, the scheduling priority value P of each type of adjustable resource participating in the scheduling is calculated according to the following formula: i : Among them, F i is the adjustable capacity of adjustable resource i, n is the number of adjustable resources, A i is the adjustable resource capacity priority value, B i is the economic priority value of the adjustable resource, C i is the flexibility priority value of the adjustable resource, E ri D is the priority value of adjustable resource i in the time chain of increasing or decreasing adjustable resources of all types and voltage levels. ji is the priority value of adjustable resource i in the AGC response time chain of all types and voltage levels of adjustable resources, r is the category of the all types and voltage levels of adjustable resources increase time chain or the all types and voltage levels of adjustable resources decrease time chain, and j is the category of the all types and voltage levels of adjustable resources AGC response time chain.

10. The real-time control system for saving land distribution and micro-active power according to claim 9 is characterized in that: The calculation and control module is used to calculate the dispatch priority values of various adjustable resources participating in the dispatch based on the AGC response time chain of all types and voltage levels of adjustable resources, the increase time chain of all types and voltage levels of adjustable resources, and the reduction time chain of all types and voltage levels of adjustable resources, in combination with the adjustable capacity characteristics, economic priority, and flexibility priority, and to perform real-time control of active power according to the priority order corresponding to the dispatch priority values of various adjustable resources participating in the dispatch, including: S3.

1. Determine whether the grid frequency meets the first condition. If so, execute S3.3; otherwise, execute S3.

2. The first condition includes that the grid frequency continuously exceeds the first time threshold and deviates from the preset range of the reference value. [base-Δε, base+Δε] and / or continuously exceeds the second time threshold value and deviates from the reference value base; S3.2: If the system is running stably and no active power correction is required, execute S3.

1. S3.

3. Determine whether the grid frequency is lower than the reference value base. If so, execute S3.4; otherwise, execute S3.

5. S3.4, determine whether the grid frequency meets the second condition, if not, calculate E according to the first additional time chain E1 ri Then execute S3.

6. If yes, calculate E according to the second additional issuance time chain E2. ri Then, S3.6 is executed, where the second condition includes that the grid frequency continuously exceeds a first threshold value below base-Δε for a period of time and / or continuously exceeds a second threshold value below a reference value base for a period of time; S3.

5. Determine whether the grid frequency meets the third condition. If so, calculate E according to the third reduction time chain E3. ri Then execute S3.

6. If not, calculate E according to the fourth reduction time chain E4. ri Then execute S3.6; the third condition includes that the grid frequency continuously exceeds a third time threshold higher than base+Δε and / or continuously exceeds a fourth time threshold higher than a reference value base; S3.6, determine whether the wind and solar resources are sufficient, if not, calculate D according to the first AGC response time chain D1 ji If yes, calculate D according to the second AGC response time chain D2 ji ; S3.7, according to D ji 、E ri , combining the adjustable capacity characteristics, economic priority and flexibility priority to calculate the scheduling priority values of various adjustable resources participating in scheduling; S3.

8. Perform real-time control of active power according to the priority order corresponding to the priority values of various adjustable resources participating in the scheduling.

11. The real-time control system for saving land distribution and micro-active power according to claim 10 is characterized in that: The calculation and control module is used to determine whether wind and solar resources are sufficient, including: When the wind speed is within a preset wind speed range and / or the solar radiation is greater than or equal to a solar radiation threshold, determining that the wind and solar resources are sufficient; When the wind speed is not within the preset wind speed range and the solar radiation is less than the solar radiation threshold, it is determined that the wind and solar resources are insufficient.

12. The real-time control system for saving land distribution and micro-active power according to claim 8, characterized in that: The calculation and control module is used to perform real-time control of active power according to the priority order corresponding to the priority values of various adjustable resources participating in the scheduling, including: Among them, Power i is the active power distribution of adjustable resource i, P i is the scheduling priority value of the adjustable resource i participating in the scheduling, Power total is the total distributable active power of the system.

13. An electronic device comprising a processor and a storage medium; characterized in that: The storage medium is used to store instructions; The processor is configured to operate according to the instructions to execute the steps of the method for real-time control of active power of micro-distribution power saving according to any one of claims 1 to 7.

14. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the steps of the real-time control method for saving the active power of the ground distribution micro-power are realized as described in any one of claims 1 to 7.

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