Emergency guarantee power supply method for power system

Abstract

The invention discloses an emergency guarantee power supply method for a power system, and relates to the technical field of power supply, and the method comprises the steps: optimizing a power grid topology, and building a temporary power grid covering a local area according to an optimization result for emergency power supply; the power storage data of the second importance node in the temporary power grid is obtained from the node data, a differential power regulation and control strategy is executed on the power supply device based on the comparison result of the wind speed data and the preset threshold value, and when the wind speed is not within the preset threshold value range, the area of the flexible cloth is regulated and controlled in real time by controlling the electromagnetic sliding block to move. The actual windward area of the sector body in the power supply device is changed, and the actual output power is adaptively adjusted to adapt to different power supply requirements; the technical effects that the system adaptability is improved, resource scheduling is efficient, adaptive dynamic adjustment can be carried out according to the wind speed, the power system emergency guarantee power supply reliability is improved, and the power output stability is improved can be achieved.

Description

Technical Field

[0001] This invention relates to the field of power supply technology, and in particular to an emergency power supply guarantee method for power systems. Background Technology

[0002] Emergency power supply backup methods for power systems primarily rely on technological integration (such as backup power sources, distributed generation, energy storage, and smart grids) and strategy optimization (such as tiered response and resource allocation) to ensure the continuity and reliability of power supply during emergencies. As a fundamental pillar of the national economy, the emergency backup capability of the power system is directly related to social stability and public safety.

[0003] my country's power grid faces a dual challenge in responding to natural disasters such as earthquakes: First, post-disaster power restoration requires comprehensive consideration of complex factors such as equipment status, network topology, and load demand, but traditional manual judgment relies on experience, which is time-consuming and makes it difficult to respond quickly; Second, the existing emergency system lacks coordination throughout the entire process of pre-earthquake drills, in-disaster assessments, and post-earthquake recovery, and the efficiency of cross-departmental data sharing and resource allocation is low, resulting in blindness in the cross-regional dispatch of emergency resources.

[0004] When providing emergency power to localized areas, due to seasonal differences and environmental complexity, existing power systems cannot quickly adapt to sudden wind speed changes (such as typhoons and gusts) and ensure stable power output to remote areas or temporary power grids in various emergency power supply scenarios, such as coastal or mountainous environments with frequent wind speed fluctuations. In addition, traditional wind turbines, due to their rigid structural design, cannot dynamically adjust the wind-catching area and require emergency shutdown to avoid mechanical overload. This operation may directly lead to power outages, making the power system less adaptable to complex wind conditions, unable to dynamically match load demands, ultimately resulting in a decrease in the success rate of emergency power supply, weakening the system's resilience and reliability, and failing to guarantee the optimal use of power resources and the efficiency of fault recovery. Summary of the Invention

[0005] This application provides an emergency power supply method for power systems, which solves the technical problems of insufficient system adaptability, inefficient resource scheduling, lack of adaptive dynamic adjustment, reduced reliability of emergency power supply and reduced power output stability in the prior art. It achieves the technical effects of improved system adaptability, efficient resource scheduling, adaptive dynamic adjustment based on wind speed, improved reliability of emergency power supply and improved power output stability.

[0006] This application provides a method for emergency power supply backup in a power system, including: S101 responds to emergency power supply commands, acquires node data of the local power grid area, and classifies the nodes into first-importance nodes and second-importance nodes; S102, with the goal of optimizing node connectivity, optimize the power grid topology and establish a temporary power grid covering a local area for emergency power supply based on the optimization results; S103: Obtain the energy storage data of the second most important node in the temporary power grid from the node data. Based on the comparison results of wind speed data and preset threshold, implement a differentiated power regulation strategy for the power supply device. When the wind speed is not within the preset threshold range, control the movement of the electromagnetic slider to adjust the area of ​​the flexible cloth in real time, change the actual windward area of ​​the fan body in the power supply device, and adjust the actual output power to adapt to different power supply needs. S104: Calculate the power demand of the first importance node, allocate resources based on energy storage data, and optimize resource scheduling using fuzzy inference algorithm; S105, in response to the power restoration command, disconnects the temporary power grid and connects each node in the temporary power grid to the original power grid.

[0007] Preferably, the step of responding to an emergency power supply command, acquiring node data of the local power grid area experiencing a power supply failure, and classifying each node in the local power grid area according to the node data to obtain first-importance nodes and second-importance nodes includes: In response to an emergency power supply command, the system quickly retrieves and locates the local power grid area experiencing a power supply failure based on the GIS information provided in the emergency power supply command. Obtain node data for the local power grid area, including voltage level, load type and geographical location of traditional power nodes and real-time environmental conditions, output power and equipment status of renewable energy nodes; The node data is clustered using the K-means clustering algorithm. Based on the clustering results, each node in the local power grid area is classified into different levels, and the first and second most important nodes in the local power grid area are identified.

[0008] Preferably, with the goal of optimizing node connectivity, graph theory algorithms and reinforcement learning algorithms are used to optimize the topology and generate alternative connection schemes. Among the nodes with the second importance, renewable energy nodes dynamically adjust their importance scores according to their power supply capacity and differentiated power regulation strategies to ensure that battery charging is prioritized during sudden environmental changes.

[0009] Preferably, a differentiated power regulation strategy is implemented for the power supply device, including: Obtain the electricity demand of the second importance node, and formulate temporary power grid and differentiated power control strategies in combination with the real-time operating parameters of the original power grid; By adjusting power processing and control switch actions, power is preferentially allocated to the second most important node; the power preferential allocation process prioritizes introducing renewable energy into the battery charging circuit; Using the differentiated power regulation strategy, fuzzy inference algorithm is used to optimize resource scheduling, online collection of battery charging and discharging status data, and combined with ambient wind speed and charging power, dynamic regulation and compensation of the power at the second important node is carried out through diesel engine and wind turbine, so as to obtain the optimal charging voltage and current curves of each battery pack.

[0010] Preferably, the power supply device in S103 includes a generator base, output lines, a main shaft, an auxiliary power generation component, a main power generation component, a generator base, and a main fan wheel unit; The main fan wheel unit includes fan blades fixed on the main rotating shaft and an adjustment assembly. The fan blades are V-shaped curved surface structures, and there are three of them, which are evenly fixed on the outside of the main rotating shaft. They are used to transfer mechanical energy to the main power generation assembly under the action of wind and convert it into electrical energy to supply power to the second important node. The main fan wheel unit also includes an adjustment assembly, which is fixed inside the main rotating shaft and is used to adjust the included angle of the fan blades.

[0011] Preferably, the adjustment assembly includes a drive motor, a rotating column, a gear, and a gear ring; The drive motor is fixed inside the main shaft; the rotating column is located inside the main shaft and is fixedly connected to the output shaft of the drive motor; there are two gears arranged vertically and fixed on the rotating column; there are two gear rings, corresponding one to one with the gears, rotatably connected inside the rotating column and meshing with the corresponding gears.

[0012] Preferably, the outer surface of the main rotating shaft is provided with three sets of arc-shaped grooves evenly distributed along its circumference; the fan blade body includes two fan blade units, one fan blade unit is fixed on the outside of the main rotating shaft, and the other fan blade unit is fixed on the outside of the gear ring through a connecting block. The connecting block slides in the corresponding arc-shaped groove. By driving the motor to rotate and under the meshing transmission of the gear and the gear ring, the fan blade unit fixed on the gear ring is driven to rotate at an angle, changing the included angle between the two fan blade units.

[0013] Preferably, the fan blade unit has a triangular tooth structure and the hypotenuses of two adjacent triangular teeth are connected by a flexible cloth, which is made of a highly elastic material.

[0014] Preferably, the inner sides of the two adjacent triangular toothed sides of the fan blade are provided with arc-shaped grooves along their longitudinal trajectory. Both the upper and lower ends of the grooves are connected to electromagnetic sliders by hinges. The electromagnetic sliders are slidably connected in the grooves within the corresponding sides. By changing the position of the electromagnetic sliders, the actual unfolded area of ​​the flexible cloth is changed, thereby changing the actual windward area of ​​the fan surface.

[0015] Preferably, a wind speed sensor is fixed to the top of the main shaft to detect the wind speed; a power sensor is fixed to the output end of the generator base to detect the actual output power of the power supply device. The wind speed sensor and the power sensor transmit the data to the external control system. The external control system compares and integrates the received information, and then issues a command to control the drive motor to rotate at an angle and the electromagnetic slider to move, thereby adjusting the angle between the two fan blades and the unfolded area of ​​the flexible cloth in real time, and thus adjusting the actual windward area of ​​the fan blades. The coordination process of the wind speed sensor, power sensor, electromagnetic slider, and drive motor, and the control of the actual windward area by controlling the movement of the electromagnetic slider and the size of the flexible fabric area, satisfy the following relationship: The output power of the power supply device satisfies the following relationship: ; in, For air density, use the standard value. It needs to be corrected in real time according to altitude / temperature; Effective windward area; This refers to the actual wind speed; The wind energy utilization coefficient is determined by the angle between the fan blades. Decide, The range is from 15° to 60°; The actual windward area variation of a single fan blade satisfies the following relationship: ; in, This refers to the inherent area of ​​a single fan blade. To adjust the dynamic range of the flexible fabric area using the electromagnetic slider, which approximates a triangle, the triangle area formula is adopted. The external control system performs the following steps in its load compensation regulation logic: ; Step 1: If Start the diesel engine to replenish the power; Step Two: If The diesel engine is on standby.

[0016] One or more technical solutions provided in this application have at least the following technical effects or advantages: By introducing differentiated power regulation strategies into the emergency power supply method of the power system, and adjusting the blade angle and flexible fabric deployment area of ​​wind turbines, combined with real-time monitoring by wind speed sensors, the power generation fluctuation rate is reduced. Therefore, when wind speed changes suddenly, the system can respond quickly and reduce the windward area to avoid generator overload. At the same time, it can expand the wind catcher surface to maintain output at low wind speeds and allocate power preferentially to the second most important nodes (such as hospitals and data centers). Through fuzzy inference algorithms, the power processing and control switching actions are dynamically adjusted to ensure that critical loads can still be powered continuously during grid failures. This effectively solves the technical problems of insufficient system adaptability, inefficient resource scheduling, lack of adaptive dynamic adjustment, reduced reliability of emergency power supply and reduced power output stability in existing technologies. It achieves the technical effects of improved system adaptability, efficient resource scheduling, adaptive dynamic adjustment based on wind speed, improved reliability of emergency power supply and improved power output stability. Attached Figure Description

[0017] Figure 1 This is a flowchart illustrating an emergency power supply method for a power system according to the present invention.

[0018] Figure 2 This is a three-dimensional structural diagram of the power supply device for an emergency power supply method for a power system according to the present invention.

[0019] Figure 3 This is a top view of the power supply device for an emergency power supply method for a power system according to the present invention.

[0020] Figure 4 This invention provides an emergency power supply guarantee method for a power system. Figure 3 Full sectional view along the AA direction.

[0021] Figure 5 This is a partial structural diagram of the main fan wheel unit of an emergency power supply method for a power system according to the present invention.

[0022] Figure 6 This invention provides an emergency power supply guarantee method for a power system. Figure 5 Full sectional view from the center BB direction.

[0023] Figure 7 This is a schematic diagram of the structure of a single fan blade in an emergency power supply method for a power system according to the present invention.

[0024] Figure 8 This is a partial structural diagram of a fan blade unit in an emergency power supply method for a power system according to the present invention.

[0025] Figure 9 This is a front view of a single fan blade of an emergency power supply method for a power system according to the present invention.

[0026] Figure 10 This invention provides an emergency power supply guarantee method for a power system. Figure 9 A magnified view of a portion of point C in the middle.

[0027] In the diagram: 100, generator base; 101, output line; 110, main shaft; 111, arc groove; 120, auxiliary power generation component; 130, generator base; 140, main power generation component; 150, wind speed sensor; 160, power sensor; 200, main fan wheel unit; 211, drive motor; 212, rotating column; 213, gear; 214, gear ring; 220, fan blade body; 221, fan blade unit; 222, connecting block; 223, slide groove; 230, flexible cloth; 240, electromagnetic slider. Detailed Implementation

[0028] To facilitate understanding of the present invention, a more complete description of this application will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the invention. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to enable a more thorough and complete understanding of the disclosure of the present invention.

[0029] It should be noted that the terms "vertical," "horizontal," "up," "down," "left," "right," and similar expressions used in this article are for illustrative purposes only and do not represent the only possible implementation.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to limit the invention; the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0031] Example 1: As Figure 1 The diagram shown is a flowchart illustrating an emergency power supply method for a power system according to this application.

[0032] like Figure 1 As shown, this application discloses an emergency power supply method for a power system. In step S101, in response to an emergency power supply command, node data of a local power grid area is obtained and the nodes are classified into nodes of first importance and nodes of second importance. S102, with the goal of achieving optimal node connectivity, optimizes the power grid topology and establishes a temporary power grid covering a local area for emergency power supply based on the optimization results; S103: Obtain the energy storage data of the second most important node in the temporary power grid from the node data. Based on the comparison results of wind speed data and preset threshold, implement a differentiated power regulation strategy for the power supply device. When the wind speed is not within the preset threshold range, control the movement of the electromagnetic slider 240 to adjust the area of ​​the flexible cloth 230 in real time, change the actual windward area of ​​the fan-shaped body in the power supply device, and adjust the actual output power to adapt to different power supply needs. S104: Calculate the power demand of the first importance node, allocate resources based on energy storage data, and optimize resource scheduling using fuzzy inference algorithm; S105, in response to the power restoration command, disconnects the temporary power grid and connects each node in the temporary power grid to the original power grid.

[0033] Specifically, the process of responding to an emergency power supply command, acquiring node data of the local power grid area experiencing a power supply failure, and classifying the nodes in the local power grid area based on the node data to obtain first-importance nodes and second-importance nodes includes: In response to an emergency power supply command, the system quickly retrieves and locates the local power grid area experiencing a power supply failure based on the GIS information provided in the emergency power supply command. Obtain node data for the local power grid area, including voltage level, load type and geographical location of traditional power nodes and real-time environmental conditions, output power and equipment status of renewable energy nodes; The node data is clustered using the K-means clustering algorithm. Based on the clustering results, each node in the local power grid area is classified into different levels, and the first and second most important nodes in the local power grid area are identified.

[0034] Specifically, with the goal of optimizing node connectivity, graph theory and reinforcement learning algorithms are used to optimize the topology and generate alternative connection schemes. Among the nodes with the second degree of importance, renewable energy nodes dynamically adjust their importance scores based on their power supply capacity and differentiated power regulation strategies to ensure that battery charging is prioritized during sudden environmental changes.

[0035] Among these, differentiated power regulation strategies are implemented for power supply equipment, including: Obtain the electricity demand of the second importance node, and formulate temporary power grid and differentiated power control strategies in combination with the real-time operating parameters of the original power grid; By adjusting power processing and control switch actions, power is preferentially allocated to the second most important node; the power preferential allocation process prioritizes introducing renewable energy into the battery charging circuit; Using the differentiated power regulation strategy, fuzzy inference algorithm is used to optimize resource scheduling, online collection of battery charging and discharging status data, and combined with ambient wind speed and charging power, dynamic regulation and compensation of the power at the second important node is carried out through diesel engine and wind turbine, so as to obtain the optimal charging voltage and current curves of each battery pack.

[0036] like Figures 2 to 10 As shown, preferably, the power supply device in S103 includes a generator base 100, an output line 101, a main shaft 110, an auxiliary power generation component 120, a main power generation component 140, a generator base 130, and a main fan wheel unit 200. The main fan wheel unit 200 includes fan blades 220 fixed on the main rotating shaft 110 and an adjustment assembly. The fan blades 220 have a V-shaped curved surface structure and are arranged in three, evenly fixed on the outside of the main rotating shaft 110. They are used to transfer mechanical energy to the main power generation assembly 140 under the action of wind and convert it into electrical energy to supply power to the second important node. The main fan wheel unit 200 also includes an adjustment assembly, which is fixed inside the main rotating shaft 110 and is used to adjust the included angle of the fan blades 220.

[0037] Preferably, the adjustment assembly includes a drive motor 211, a rotating column 212, a gear 213, and a gear ring 214; The drive motor 211 is fixed inside the main rotating shaft 110; the rotating column 212 is disposed inside the main rotating shaft 110 and is fixedly connected to the output shaft of the drive motor 211; two gears 213 are provided, arranged vertically, and both are fixed on the rotating column 212; two gear rings 214 are provided, corresponding one to one with the gears 213, rotatably connected inside the rotating column 212 and meshing with the corresponding gears 213.

[0038] Preferably, the outer surface of the main rotating shaft 110 is provided with three sets of arc-shaped grooves 111 evenly distributed along its circumference; the fan blade body 220 includes two fan blade units 221, one fan blade unit 221 is fixed on the outside of the main rotating shaft 110, and the other fan blade unit 221 is fixed on the outside of the gear ring 214 through a connecting block 222. The connecting block 222 slides in the corresponding arc-shaped groove 111. By rotating the drive motor 211 and under the meshing transmission of the gear 213 and the gear ring 214, the fan blade unit 221 fixed on the gear ring 214 is driven to rotate at an angle, changing the included angle between the two fan blade units 221.

[0039] Preferably, the fan blade unit 221 has a triangular tooth structure and the inclined sides of two adjacent triangular teeth are connected by a flexible cloth 230. The flexible cloth 230 is made of a highly elastic material and is made of polytetrafluoroethylene (PTFE) composite reinforced fabric, which has good elasticity and fatigue resistance.

[0040] Preferably, the inner side of the two adjacent triangular toothed sides of the fan blade unit 221 is provided with an arc-shaped groove 223 along its longitudinal trajectory, and both the upper and lower ends of the groove are connected to an electromagnetic slider 240 by a hinge. The electromagnetic slider 240 is slidably connected in the groove 223 in the corresponding side. By changing the position of the electromagnetic slider 240, the actual unfolded area of ​​the flexible cloth 230 is changed, thereby changing the actual windward area of ​​the fan surface.

[0041] By improving the vertical wind turbine blade body 220 into a V-shaped curved surface structure, the angle between the two blade units 221 can be dynamically adjusted by adjusting the components, thereby dynamically adjusting the actual windward area. At low wind speeds, the windward surface is expanded to enhance wind-catching ability, while at high wind speeds, the windward surface is reduced to avoid overload. At the same time, the V-shaped curved surface can reduce wind resistance, reduce mechanical stress, and extend the service life of the equipment.

[0042] The device employs a structure connecting triangular toothed fan blade unit 221 with flexible fabric 230. The unfolded area of ​​the flexible fabric 230 is controlled by an electromagnetic slider 240, enabling millimeter-level precise adjustment of the windward area. The triangular toothed structure disperses wind pressure, and the buffering effect of the flexible fabric 230 reduces the impact of turbulence on the equipment. This makes the device suitable for scenarios with extremely high requirements for power supply continuity (such as hospital operating rooms and data centers). It can maintain stable power generation even when wind speed changes suddenly (such as the outer airflow of a tornado), avoiding equipment shutdown due to power fluctuations.

[0043] Preferably, a wind speed sensor 150 is fixed to the top of the main shaft 110 to detect the wind speed; a power sensor 160 is fixed to the output end of the generator base 100 to detect the actual output power of the power supply device. The wind speed sensor 150 and the power sensor 160 transmit the data they obtain to the external control system. The external control system compares and integrates the received information, and then issues a command to control the drive motor 211 to rotate at an angle and the electromagnetic slider 240 to move, thereby adjusting the angle between the two fan blade units 221 and the unfolded area of ​​the flexible cloth 230 in real time, and thus adjusting the actual windward area of ​​the fan blade body 220. The coordination process of the wind speed sensor 150, power sensor 160, electromagnetic slider 240 and drive motor 211, and the control of the actual windward area by controlling the movement of electromagnetic slider 240 and the size of flexible cloth 230, satisfy the following relationship: The output power of the power supply device (i.e., wind energy capture) satisfies the following relationship: ; in, For air density, use the standard value. It needs to be corrected in real time according to altitude / temperature; Effective windward area; This refers to the actual wind speed; The wind energy utilization coefficient is determined by the 220° angle between the fan blades. Decide, The range is from 15° to 60°; The actual windward area variation of the 220 fan blade body satisfies the following relationship: ; in, The inherent area of ​​the fan blade unit is 221; The dynamic range of the area of ​​the flexible cloth 230 adjusted by the electromagnetic slider 240 is approximately triangular, therefore the formula for the area of ​​a triangle is adopted. The external control system performs the following steps in its load compensation regulation logic: ; Step 1: If Start the diesel engine to replenish the power; Step Two: If The diesel engine is on standby.

[0044] The main power generation component 140 and the auxiliary power generation component 120 generate wind power through Faraday's law of electromagnetic induction. Specifically, wind power drives the fan blades 220 to rotate, which in turn drives the rotor inside the generator to rotate. The rotor (containing permanent magnets or electromagnets) rotates, generating a changing magnetic field. The stator coils cut the changing magnetic field lines, generating an induced electromotive force. Therefore, in a closed circuit, the induced electromotive force drives the current, converting mechanical energy into electrical energy, which is ultimately delivered to the emergency power supply at the second important node in the power grid. The external control system is a PLC control system, preferably a Siemens S7-1200 series. The slide rail 223 is fixed inside with a self-locking slide rail that cooperates with the electromagnetic slider 240. The electromagnetic slider 240 is preferably a Bosch Rexroth MLS18 model, and the slide rail is preferably a THK model. HSR35 model; the wind speed sensor 150 and the power sensor 160 are used to detect the wind speed and the actual output power of the power supply device, respectively. The wind speed sensor 150 is preferably the Ventus-UV30 model, and the power sensor 160 is preferably the PW4000 model; both are existing technologies and will not be described in detail here.

[0045] In actual operation, the steps of this embodiment are as follows: Step 1: Emergency Command Triggering and Node Classification Upon receiving an emergency power supply command, the system uses GIS to locate the fault area and quickly obtains node data of the local power grid (including voltage of traditional nodes, load type, and status of renewable energy nodes). It then uses the K-means clustering algorithm to classify the nodes, identifying nodes of first importance (such as hospitals and data centers) and nodes of second importance (such as industrial users and renewable energy sites). Step 2: Topology optimization and temporary power grid establishment Based on graph theory and reinforcement learning algorithms, alternative power grid connection schemes are generated with the goal of optimizing node connectivity. A temporary power grid is established according to the optimization results, prioritizing the connection of renewable energy sites (such as wind turbines) in the second most important nodes, and their importance scores are dynamically adjusted. Step 3: Implementation of Differentiated Power Control Strategies Real-time wind speed is monitored by wind speed sensor 150, and the power generation capacity is adjusted based on preset thresholds to obtain the power demand and battery SOC (state of charge) data of the second importance node. Dynamic control is implemented: when the second importance node is in a high wind speed scenario, the area of ​​flexible cloth 230 is reduced by electromagnetic slider 240 to reduce wind energy capture and avoid overloading the wind turbine; when the second importance node is in a low wind speed scenario, the area of ​​flexible cloth 230 is expanded to enhance the ability to capture weak winds and improve power generation efficiency. Renewable energy (such as wind energy) is prioritized for introduction into the battery charging circuit, and the remaining energy is allocated to the second importance node. Based on the ambient wind speed, battery status, and node requirements, the output ratio of diesel engine and wind turbine is dynamically adjusted through algorithms to generate the optimal charging curve. Step 4: Power Supply Guarantee for the First Importance Node Calculate the power demand of the most important node, combine it with battery energy storage data, and further optimize resource scheduling through fuzzy inference algorithm; if renewable energy supply is insufficient, release stored energy from the battery to ensure continuous power supply to critical nodes (such as operating rooms); Step 5: Power Grid Restoration and Deactivation Upon receiving the power restoration command, the temporary power grid is disconnected, and each node is smoothly switched back to the original power grid. The power system records the emergency power supply data for subsequent algorithm optimization.

[0046] In the actual process of dynamically controlling the generator output power by adjusting the angle between the area of ​​the flexible fabric 230 and the fan blade 220, since the fan blade 220 is set in three groups, each group of fan blades 220 includes two fan blade units 221, under ideal conditions, i.e., ignoring conversion losses, the output power of the power supply device and the total output power of the generator are... The mechanical energy conversion derived from wind energy capture is essentially the sum of the torques driven by wind pressure on all individual fan blades 221, i.e. ,in, This represents the theoretical output power of a single fan blade unit 221, while This represents the theoretical output power of the kth fan blade unit 221, where k is the serial number of the fan blade unit 221 (k=1,2,...,6). This is the sum of the theoretical output power of the six individual fan blades (221). Negligible; see reference Figures 5 to 10 Taking the regulation of a single fan blade unit 221 as an example, the theoretical power formula of the single unit is used. Scenario simulation is performed, in which, The effective windward area of ​​a single fan blade unit 221: Set initial environmental parameters: air density (Altitude correction value); Target output power (Requirements for the second most important node); Current output of the battery ; Sudden wind speed change process: (A gust of wind lasting 5 seconds); Fan blade unit 221 parameters: (Inherent area); Flexible fabric 230 maximum unfolded area ; initial angle (correspond ); Electromagnetic slider 240 stroke range: 0 to 2 (i.e., the length of groove 223); The specific regulation process is as follows: (1) Detection of sudden wind speed changes and calculation of power gap Wind speed sensor 150 detected (Exceeding the preset threshold) ); The power sensor 160 measures the current actual output. ; Calculate the power deficit: ; At this time, the diesel engine is in standby mode (no need for power replenishment), but the fan power needs to be reduced to avoid overload; (2) Dynamic shrinkage of windward area (electromagnetic slider 240 adjustment) Target power setting: Reduced to 2.0kW (with safety margin in mind); Inverse calculation of the required windward area : ; ; Flexible fabric 230 area control: ; The target area was found to be smaller than the initial inherent unfolded area. Therefore, the actual unfolded area of ​​the flexible fabric 230 was reduced, resulting in the flexible fabric 230 taking the shape of an inverted triangle (e.g., ...). Figure 10 (as shown), i.e., the actual unfolded area That is, the electromagnetic slider 240 is moved to a position of 1.4m; Taking the initial environmental parameters of flexible fabric 230 with a bottom edge of 1.4m and a height of 0.314m as an example; ; (3) Synchronous adjustment of the included angle of the fan blade body 220 (driven by drive motor 211) Increase the angle and decrease :Will from Adjust to ( (decreased to 0.35) Drive motor 211 operates: Rotating column 212 rotates. This drives the gear 213 and the gear ring 214 to move, causing the connecting block 222 to slide along the arc groove 111; ; Displacement ; ( (The radius of rotation is taken as 0.1m here). (5) Power verification after regulation Actual windward area ; The adjusted output power is ; The target value was achieved, and the power fluctuation rate decreased. (from ).

[0047] The system introduces a differentiated power regulation strategy for dynamic response: by shrinking the flexible cloth 230 and increasing the included angle through a slider, the power is reduced to a safe range within 5 seconds; the three-dimensional V-shaped curved fan blades 220 can disperse wind pressure, and the flexible cloth 230 can buffer turbulent impact; diesel engine power replenishment is avoided, fuel consumption is saved, resources are optimized, and the technical effects of improving the adaptability of the power system after natural disasters such as earthquakes, efficient resource scheduling, adaptive dynamic adjustment according to wind speed, improved reliability of emergency power supply, and improved power output stability are achieved.

[0048] The technical solutions described in the embodiments of this application have at least the following technical effects or advantages: By introducing differentiated power regulation strategies into the emergency power supply method of the power system, and by adjusting the included angle of the wind turbine blades 220 and the unfolded area of ​​the flexible cloth 230, combined with real-time monitoring by the wind speed sensor 150, the power generation fluctuation rate is reduced. Therefore, when the wind speed changes suddenly, the system can respond quickly and reduce the windward area to avoid generator overload. At the same time, it can expand the wind-catching surface to maintain output when the wind speed is low, and allocate power to the second most important nodes (such as hospitals and data centers). By dynamically adjusting the power processing and control switching actions through fuzzy inference algorithms, it can ensure that critical loads can still be powered continuously when the grid fails.

[0049] The strategy prioritizes renewable energy (such as wind power) into battery charging circuits, reducing reliance on traditional diesel generators. When wind speeds drop sharply or renewable energy supply capacity fluctuates, the system dynamically adjusts importance scores to quickly switch to backup power (such as diesel generators), ensuring power continuity. Differential control avoids resource waste caused by a "one-size-fits-all" approach to power supply. Therefore, in extreme weather conditions such as typhoons and torrential rains, the power system can prevent equipment damage and ensure long-term stable operation of the emergency power grid through power limiting protection (reducing wind capture volume at high wind speeds) and power capture enhancement (expanding the wind capture area at low wind speeds). This improves the power system's disaster resilience. The differentiated power control strategy, through three core mechanisms—dynamic resource allocation, precise algorithm optimization, and multi-energy synergy—achieves a holistic improvement from single-device control to global grid optimization.

[0050] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for emergency power supply backup in a power system, characterized in that, include: S101 responds to emergency power supply commands, acquires node data of the local power grid area, and classifies the nodes into first-importance nodes and second-importance nodes; S102, with the goal of achieving optimal node connectivity, optimizes the power grid topology and establishes a temporary power grid covering a local area for emergency power supply based on the optimization results; S103: Obtain the energy storage data of the second most important node in the temporary power grid from the node data. Based on the comparison results of wind speed data and preset threshold, implement a differentiated power regulation strategy for the power supply device. When the wind speed is not within the preset threshold range, control the movement of the electromagnetic slider to adjust the area of ​​the flexible cloth in real time, change the actual windward area of ​​the fan body in the power supply device, and adjust the actual output power to adapt to different power supply needs. S104: Calculate the power demand of the first importance node, allocate resources based on energy storage data, and optimize resource scheduling using fuzzy inference algorithm; S105, in response to the power restoration command, disconnects the temporary power grid and connects each node in the temporary power grid to the original power grid.

2. The emergency power supply guarantee method for a power system as described in claim 1, characterized in that, The response to the emergency power supply command involves acquiring node data of the local power grid area experiencing a power supply failure, and classifying the nodes in the local power grid area according to the node data to obtain first-importance nodes and second-importance nodes, including: In response to an emergency power supply command, the system quickly retrieves and locates the local power grid area experiencing a power supply failure based on the GIS information provided in the emergency power supply command. Obtain node data for the local power grid area, including voltage level, load type and geographical location of traditional power nodes and real-time environmental conditions, output power and equipment status of renewable energy nodes; The node data is clustered using the K-means clustering algorithm. Based on the clustering results, each node in the local power grid area is classified into different levels, and the first and second most important nodes in the local power grid area are identified.

3. The emergency power supply guarantee method for a power system as described in claim 1, characterized in that, The goal is to optimize node connectivity. Graph theory and reinforcement learning algorithms are used to optimize the topology and generate alternative connection schemes. Among the nodes with the second highest importance, renewable energy nodes dynamically adjust their importance scores based on their power supply capacity and differentiated power regulation strategies to ensure that battery charging is prioritized during sudden environmental changes.

4. The emergency power supply guarantee method for a power system as described in claim 1, characterized in that, The implementation of differentiated power regulation strategies for power supply devices includes: Obtain the electricity demand of the second importance node, and formulate temporary power grid and differentiated power control strategies in combination with the real-time operating parameters of the original power grid. By adjusting power processing and control switch actions, power is preferentially allocated to the second most important node; the power preferential allocation process prioritizes introducing renewable energy into the battery charging circuit; Using the differentiated power regulation strategy, fuzzy inference algorithm is used to optimize resource scheduling, online collection of battery charging and discharging status data, and combined with ambient wind speed and charging power, dynamic regulation and compensation of the power at the second important node is carried out through diesel engine and wind turbine, so as to obtain the optimal charging voltage and current curves of each battery pack.

5. The emergency power supply guarantee method for a power system as described in claim 1, characterized in that, The power supply device in S103 includes a generator base (100), an output line (101), a main shaft (110), an auxiliary power generation component (120), a main power generation component (140), a generator base (130), and a main fan wheel unit (200). The main fan wheel unit (200) includes a fan blade (220) fixed on the main rotating shaft (110) and an adjustment component. The fan blade (220) has a V-shaped curved surface structure and is provided in three parts, which are evenly fixed on the outside of the main rotating shaft (110). It is used to transfer mechanical energy to the main power generation component (140) under the action of wind and convert it into electrical energy to supply power to the second important node. The main fan wheel unit (200) also includes an adjustment component, which is fixed inside the main rotating shaft (110) and is used to adjust the included angle of the fan blade (220).

6. The emergency power supply guarantee method for a power system as described in claim 5, characterized in that, The adjustment assembly includes a drive motor (211), a rotating column (212), a gear (213), and a gear ring (214). The drive motor (211) is fixed inside the main rotating shaft (110); the rotating column (212) is located inside the main rotating shaft (110) and is fixedly connected to the output shaft of the drive motor (211); there are two gears (213), arranged vertically, both fixed on the rotating column (212); there are two gear rings (214), corresponding one to one with the gears (213), rotatably connected inside the rotating column (212) and meshing with the corresponding gears (213).

7. The emergency power supply guarantee method for a power system as described in claim 6, characterized in that, The outer side of the main rotating shaft (110) is evenly provided with three sets of arc-shaped grooves (111) along its circumference; the fan blade body (220) includes two fan blade units (221), one fan blade unit (221) is fixed on the outside of the main rotating shaft (110), and the other fan blade unit (221) is fixed on the outside of the gear ring (214) through the connecting block (222). The connecting block (222) slides in the corresponding arc-shaped groove (111). Through the rotation of the drive motor (211) and the meshing transmission of the gear (213) and the gear ring (214), the fan blade unit (221) fixed on the gear ring (214) is driven to rotate at an angle, changing the included angle between the two fan blade units (221).

8. The emergency power supply guarantee method for a power system as described in claim 7, characterized in that, The fan blade unit (221) has a triangular tooth structure and the hypotenuses of two adjacent triangular teeth are connected by a flexible cloth (230), which is made of a highly elastic material.

9. The emergency power supply guarantee method for a power system as described in claim 8, characterized in that, The fan blade unit (221) has an arc-shaped groove (223) on the inner side of the two adjacent triangular toothed sides along its longitudinal trajectory. Both the upper and lower ends are connected to an electromagnetic slider (240) by a hinge. The electromagnetic slider (240) is slidably connected in the groove (223) in the corresponding side. By changing the position of the electromagnetic slider (240), the actual unfolded area of ​​the flexible cloth (230) is changed, thereby changing the actual windward area of ​​the fan surface.

10. The emergency power supply guarantee method for a power system as described in claim 9, characterized in that, A wind speed sensor (150) is fixed to the top of the main shaft (110) to detect the wind speed; a power sensor (160) is fixed to the output end of the generator base (100) to detect the actual output power of the power supply device. The wind speed sensor (150) and the power sensor (160) transmit the data they obtain to the external control system. The external control system compares and integrates the received information, and then issues a command to control the drive motor (211) to rotate at an angle and the electromagnetic slider (240) to move, thereby adjusting the angle between the two fan blade units (221) and the unfolded area of ​​the flexible cloth (230) in real time, and thus adjusting the actual windward area of ​​the fan blade body (220). The coordination process of the wind speed sensor (150), power sensor (160), electromagnetic slider (240) and drive motor (211), and the control of the actual windward area by controlling the movement of electromagnetic slider (240) and the area of ​​flexible cloth (230), satisfy the following relationship: The output power of the power supply device satisfies the following relationship: ; in, The air density is a standard value and needs to be corrected in real time according to altitude / temperature. Effective windward area; This refers to the actual wind speed; The wind energy utilization coefficient is determined by the angle between the fan blades (220). Decide, The range is 15° to 60°; The actual windward area variation of a single fan blade (221) satisfies the following relationship: ; in, The inherent area of ​​the fan blade unit (221); The area dynamic range of the flexible cloth (230) is adjusted by the electromagnetic slider (240), which is approximately triangular, so the triangle area formula is used; The external control system performs the following steps in its load compensation regulation logic: ; Step 1: If Start the diesel engine to replenish the power; Step Two: If The diesel engine is on standby.

Images