Three-dimensional GIS-based power grid digital space control main scene and sub scene smooth switching method

Abstract

The invention belongs to the technical field of power grid management and control, and particularly relates to a main scene and sub scene smooth switching method based on three-dimensional GIS power grid digital space control. A power grid digital space model is constructed through a three-dimensional GIS technology, a main scene and a sub-scene are divided, detailed information such as power equipment is covered, and it is guaranteed that data are consistent with reality. And an adaptive interpolation algorithm is adopted, and a transition path is adjusted in combination with the equipment state and the load change, so that the smoothness is controlled by weighted interpolation, and jamming is avoided. Hierarchical gradient rendering is introduced, the rendering weight is distributed according to the equipment load and importance, and the rendering effect is improved through dynamic fuzzy control. And by applying a differential loading strategy and dynamic adjustment precision, the loading speed and the synchronization precision are optimized, and the response delay is reduced. The problem of traditional scene switching is effectively solved, and the visualization effect and the real-time performance of the power grid are improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of power grid management and control, and in particular relates to a method for smooth switching between main and sub-scenes based on three-dimensional GIS power grid digital space control. Background Art

[0002] With the continuous expansion of the scale of power grids and the increase in the complexity of operation, the requirements for the switching of power grid digital space control scenes are also increasing. In the three-dimensional GIS power grid digital space control, multiple main scenes and sub-scenes switching operations are involved, such as power grid monitoring scenes in different regions, power grid display scenes under different operating conditions, etc. There are many problems with the traditional scene switching method. During the switching process, there is often a freeze phenomenon, which affects the user experience and the real-time monitoring of the power grid operation status. This is mainly because the traditional method does not fully consider the impact of power grid load changes and equipment status changes on scene switching, and cannot dynamically adjust the switching process according to actual conditions. At the same time, in terms of scene rendering, there is a lack of effective strategies to ensure the rendering quality of different devices during switching, resulting in an unsmooth transition of the screen. Moreover, loading speed and response delay are also challenges faced by traditional methods. Large amounts of data loading may cause a long wait time, which cannot meet the real-time requirements in power grid management. Summary of the invention

[0003] In view of the above-mentioned technical problems, the present invention proposes a method for smooth switching of main and sub-scenes based on three-dimensional GIS power grid digital space control.

[0004] In order to achieve the above object, the technical solution adopted by the present invention comprises the following steps:

[0005] S1. First, a digital spatial model of the power grid is constructed through 3D GIS technology, and the power grid scene is divided into multiple main scenes and sub-scenes;

[0006] S2. Then, an adaptive interpolation algorithm is used to adjust the interpolation speed and mode of the transition path in combination with the device status and load changes. The grid load status is set as a dynamic weight function, and the smoothness of the scene transition is controlled by weighted interpolation. The interpolation formula is as follows: Where P start , P end are the scene start and target coordinates, ω(t) is the weight function based on the grid load, α i It is the effect of the state change of the control device on the transition path. is the grid load change rate;

[0007] S3. In addition, when the scene is switched, a hierarchical gradient rendering method is introduced. For the rendering quality of each device in the scene, different rendering weights are assigned according to its current load status and importance in the scene, and dynamic blur control is used to make the rendering smoother. The rendering formula is: Among them I layer,i (t) represents the rendered image of the i-th layer, T i is the rendering time constant of the i-th layer device;

[0008] S4. Finally, during the scene switching process, differentiated loading strategies and dynamic adjustment of accuracy optimization errors are adopted to optimize loading speed and reduce response delay.

[0009] Preferably, the scenario of step S1 includes the spatial location and status information of power equipment, lines and substations, and high-precision modeling is used to ensure a high degree of consistency between various data of the power grid and the actual physical environment.

[0010] Preferably, the step S2 of smoothing the scene transition by adaptive weighted interpolation is specifically implemented as follows:

[0011] S21, first determine the scene transition path and define the starting coordinates P start and the target coordinates P end ,The coordinates contain the spatial positions and status information of each area and equipment in the power grid.,Through the adaptive interpolation algorithm, the interpolation speed and mode are dynamically adjusted according to the load status of the grid and the real-time status of the equipment, so that the scene switching is more ,in line with the actual load requirements;

[0012] S22. Secondly, the load state is used as a dynamic weight function ω(t), and the weight function is adjusted as the load changes: Where L current (t) is the current load, L max is the maximum load;

[0013] S23. Finally, consider the dynamic impact of the device state on the transition path, and dynamically adjust the interpolation speed and mode in combination with the changes in the device state: The term is used to dynamically adjust the interpolation path according to the change of each device state, where the grid load change rate When the load changes rapidly, the interpolation algorithm will be automatically adjusted to ensure smooth path transition and avoid scene freezes caused by sudden load changes.

[0014] Preferably, the influence of the state change of the control device on the transition path in step S2 is Where L max,i is the maximum load of device i, It is the absolute value of the load change rate of device i. Using the absolute value avoids the different effects of load increase or decrease directions.

[0015] Preferably, the implementation steps of step S4 are:

[0016] S41. First, according to the real-time load of the power grid and the importance of the equipment, the loading priority of each sub-scenario and equipment is dynamically determined. For high-load or critical equipment systems, higher loading priority is assigned and these equipment and areas are loaded in advance. For low-load and secondary equipment, loading is delayed. The differentiation formula is: Where L next (t) is the progress of the next loading, L current is the front loading progress, ΔL diff (t) is the differential loading increment, which controls the loading rate difference in different areas. is the grid load change rate;

[0017] S42. Dynamically adjust the synchronization accuracy to avoid delays. For areas with high load, use higher synchronization accuracy to ensure that the device status is synchronized with the scene: Where E sync (t) is the synchronization error, which indicates the change of device status in different scenarios. are the state changes of the i-th device in the current and target scenes, respectively, and f sync (t) is the synchronization accuracy function, and the synchronization accuracy optimization error is dynamically adjusted based on the change of power grid load.

[0018] Compared with the prior art, the advantages and positive effects of the present invention are that a digital spatial model of the power grid is constructed based on three-dimensional GIS technology, so that the power grid data is highly consistent with the actual environment, providing a basis for precise control. The adaptive interpolation algorithm adjusts the scene transition according to the load and device status to avoid jamming and ensure smooth switching. Hierarchical gradient rendering assigns weights according to device load and importance, improves rendering quality and highlights key information. Differentiated loading and dynamic precision adjustment optimize loading speed and synchronization accuracy, and reduce delays. Overall, it improves the efficiency, visualization effect and real-time performance of power grid management, and enhances the safety and reliability of power grid operation. DETAILED DESCRIPTION

[0019] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below in conjunction with embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0020] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0021] Embodiment, existing power grid management methods gradually reveal many shortcomings when faced with massive equipment information and complex operating conditions. In terms of scene switching, it is often simple and crude, and does not take into account the impact of real-time fluctuations in power grid load and dynamic changes in equipment status on the smoothness of scene switching, resulting in users often encountering freezes when monitoring power grid operation, which seriously interferes with the accurate grasp of the real-time status of the power grid. At the same time, there is a lack of refined processing in scene rendering, and rendering resources cannot be effectively allocated according to equipment importance and load status, resulting in uneven picture quality and abrupt transitions. In addition, slow loading speed and response delay problems also frequently occur. Large amounts of data are loaded at the same time, causing long waits, and the strict real-time requirements of power grid management cannot be met. Therefore, the present invention proposes a method for smooth switching of main and sub-scenes based on three-dimensional GIS power grid digital space control.

[0022] First, build a digital spatial model of the power grid and divide it into main scenes and sub-scenes. Through 3D GIS technology, integrate the spatial location and status information of power equipment, lines, substations, etc. in the power grid scene, build a high-precision digital spatial model, and reasonably divide it into multiple main scenes and sub-scenes. Divide it into multiple main scenes according to the distribution of power grids in different regions, and further divide sub-scenes under each main scene according to the type or function of equipment. Reasonable division can clearly present the structure and operation status of the power grid, facilitate management and monitoring of different regions and equipment, and make scene switching more targeted and systematic.

[0023] In order to achieve smooth switching, an adaptive weighted interpolation algorithm is used to solve the scene transition problem. First, the scene transition path is determined. Based on the starting coordinates and target coordinates containing comprehensive information of each area and device of the power grid, the algorithm dynamically adjusts the interpolation speed and mode according to the real-time load status of the power grid and the dynamic status of the device. The load status is converted into a dynamic weight function. When the load changes, the function automatically adjusts the interpolation weight. First, determine the scene transition path and define the starting coordinate P start and the target coordinates P end , the coordinates contain the spatial position and status information of each area and device of the power grid. Through the adaptive interpolation algorithm, the interpolation speed and mode are dynamically adjusted according to the load status of the power grid and the real-time status of the device, so that the scene switching is more in line with the actual load requirements; secondly, the load status is used as a dynamic weight function ω(t), and the weight function is adjusted as the load changes: Where L current (t) is the current load, L max is the maximum load; finally, the dynamic impact of the device state on the transition path is considered, and the speed and mode of interpolation are dynamically adjusted in combination with the changes in the device state: The term is used to dynamically adjust the interpolation path according to the change of each device state, where the grid load change rate When the load changes rapidly, the interpolation algorithm will be automatically adjusted to ensure smooth path transition and avoid scene freezes caused by sudden load changes.

[0024] Next, in order to improve the rendering quality and highlight key information in the scene rendering process, a hierarchical gradient rendering method is introduced. Different rendering weights are assigned to each device based on the current load status of the device and its importance in the scene. For key equipment such as ultra-high voltage lines and large hub substations that undertake the main power transmission tasks, higher weights are assigned to ensure their rendering quality. Combined with dynamic blur control, the entire scene rendering transition is natural and smooth. The rendering formula is: Among them I layer,i (t) represents the rendered image of the i-th layer, T i is the rendering time constant of the i-th layer device. The hierarchical gradient rendering method makes the key devices in the scene render clearly and prominently, and the secondary devices render reasonably, which not only ensures the overall visual effect but also highlights the key information. The picture transition is natural, which enhances the visualization effect and helps the operation and maintenance personnel to quickly locate and deal with key problems.

[0025] Finally, in order to optimize the loading speed and reduce the response delay, a differentiated loading strategy and a dynamic adjustment accuracy method are adopted. The loading priority is determined according to the real-time load of the power grid and the importance of the equipment. High-load or critical equipment is loaded in advance, and secondary equipment is loaded in a delayed manner. First, according to the real-time load and equipment importance of the power grid, the loading priority of each sub-scenario and equipment is dynamically determined. For high-load or critical equipment systems, a higher loading priority is assigned, and these equipment and areas are loaded in advance. For low-load and secondary equipment, loading is delayed. The differentiation formula is: Where L next (t) is the progress of the next loading, L current is the front loading progress, ΔL diff (t) is the differential loading increment, which controls the loading rate difference in different areas. The rate of change of the grid load; dynamically adjust the synchronization accuracy to avoid delays. For areas with higher loads, use higher synchronization accuracy to ensure that the device status is synchronized with the scene: Where E sync (t) is the synchronization error, which indicates the change of device status in different scenarios. are the state changes of the i-th device in the current and target scenes, respectively, and f sync (t) is the synchronization accuracy function, and the synchronization accuracy optimization error is dynamically adjusted based on the change of power grid load. The application of differentiated loading strategy and dynamic adjustment accuracy significantly optimizes the loading process, reduces unnecessary data transmission waiting time, and makes scene switching faster.

[0026] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A method for smooth switching between main and sub-scenes based on three-dimensional GIS power grid digital space control, characterized in that: The following steps are involved: S1. First, a digital spatial model of the power grid is constructed through 3D GIS technology, and the power grid scene is divided into multiple main scenes and sub-scenes; S2. Then, an adaptive interpolation algorithm is used to adjust the interpolation speed and mode of the transition path in combination with the device status and load changes. The grid load status is set as a dynamic weight function, and the smoothness of the scene transition is controlled by weighted interpolation. The interpolation formula is as follows: Where P start , P end are the scene start and target coordinates, ω(t) is the weight function based on the grid load, α i It is the effect of the state change of the control device on the transition path. is the grid load change rate; S3. In addition, when the scene is switched, a hierarchical gradient rendering method is introduced. For the rendering quality of each device in the scene, different rendering weights are assigned according to its current load status and importance in the scene, and dynamic blur control is used to make the rendering smoother. The rendering formula is: Among them I layer,i (t) represents the rendered image of the i-th layer, T i is the rendering time constant of the i-th layer device; S4. Finally, during the scene switching process, differentiated loading strategies and dynamic adjustment of accuracy optimization errors are adopted to optimize loading speed and reduce response delay.

2. According to claim 1, a method for smooth switching between main and sub-scenes based on three-dimensional GIS power grid digital space control is characterized in that: The scenario in step S1 includes the spatial location and status information of power equipment, lines, and substations, and high-precision modeling is used to ensure a high degree of consistency between various data of the power grid and the actual physical environment.

3. According to claim 1, a method for smooth switching between main and sub-scenes based on three-dimensional GIS power grid digital space control is characterized in that: The specific implementation of step S2 to smooth the scene transition by adaptive weighted interpolation is as follows: S21, first determine the scene transition path and define the starting coordinates P start and the target coordinates P end ,The coordinates contain the spatial positions and status information of each area and equipment in the power grid.,Through the adaptive interpolation algorithm, the interpolation speed and mode are dynamically adjusted according to the load status of the grid and the real-time status of the equipment, so that the scene switching is more ,in line with the actual load requirements; S22. Secondly, the load state is used as a dynamic weight function ω(t), and the weight function is adjusted as the load changes: Where L current (t) is the current load, L max is the maximum load; S23. Finally, consider the dynamic impact of the device state on the transition path, and dynamically adjust the interpolation speed and mode in combination with the changes in the device state: The term is used to dynamically adjust the interpolation path according to the change of each device state, where the grid load change rate When the load changes rapidly, the interpolation algorithm will be automatically adjusted to ensure smooth path transition and avoid scene freezes caused by sudden load changes.

4. According to claim 1, a method for smooth switching between main and sub-scenes based on three-dimensional GIS power grid digital space control is characterized in that: The influence of the state change of the control device on the transition path in step S2 Where L max,i is the maximum load of device i, It is the absolute value of the load change rate of device i. Using the absolute value avoids the different effects of load increase or decrease directions.

5. According to claim 1, a method for smooth switching between main and sub-scenes based on three-dimensional GIS power grid digital space control is characterized in that: The implementation steps of step S4 are: S41. First, according to the real-time load of the power grid and the importance of the equipment, the loading priority of each sub-scenario and equipment is dynamically determined. For high-load or critical equipment systems, higher loading priority is assigned and these equipment and areas are loaded in advance. For low-load and secondary equipment, loading is delayed. The differentiation formula is: Where L next (t) is the progress of the next loading, L current is the front loading progress, ΔL diff (t) is the differential loading increment, which controls the loading rate difference in different areas. is the grid load change rate; S42. Dynamically adjust the synchronization accuracy to avoid delays. For areas with high load, use higher synchronization accuracy to ensure that the device status is synchronized with the scene: Where E sync (t) is the synchronization error, which indicates the change of device status in different scenarios. are the state changes of the i-th device in the current and target scenes, respectively, and f sync (t) is the synchronization accuracy function, and the synchronization accuracy optimization error is dynamically adjusted based on the change of power grid load.

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