An intelligent power-saving protection method for amorphous alloy three-dimensional wound core

Abstract

The present invention belongs to the field of energy-saving technology for amorphous alloy three-dimensional wound iron cores, and discloses an intelligent energy-saving protection method for amorphous alloy three-dimensional wound iron cores. The present invention collects the current harmonic distortion rate, magnetic field non-uniformity coefficient and temperature gradient of the amorphous alloy three-dimensional wound iron core, and then constructs a correlation model between the operating state parameters and the power loss index. It can fully reflect the operating state of the equipment, accurately reveal the relationship between parameters and losses, realize loss prediction and energy-saving optimization, and assist in equipment maintenance and performance improvement. The present invention analyzes energy-saving needs by region, and then identifies areas with energy-saving potential and conducts targeted dynamic regulation. It can accurately locate the electricity consumption characteristics of different regions, avoid the blindness of unified energy-saving strategies, realize accurate resource allocation, and improve the effectiveness of energy-saving measures. It can also adjust strategies in real time according to changes in electricity consumption in each region, improve energy utilization efficiency, and reduce overall energy consumption.

Description

Technical Field

[0001] The invention belongs to the technical field of power saving of amorphous alloy three-dimensional wound iron cores, and relates to an intelligent power saving protection method for amorphous alloy three-dimensional wound iron cores. Background Art

[0002] An amorphous alloy three-dimensional wound core is a transformer core made of amorphous alloy material and featuring a three-dimensional winding structure. A power-saving analysis of this core reveals that amorphous alloys inherently possess low magnetic permeability and low losses. However, in actual operation, this three-dimensional wound core structure can experience abnormally high localized losses due to factors such as current harmonics, uneven magnetic field distribution, and temperature fluctuations. This power-saving analysis fully exploits the material's potential and further reduces both no-load and loaded losses. Therefore, research on intelligent power-saving protection for amorphous alloy three-dimensional wound cores is of great significance.

[0003] Prior art also includes technical solutions for iron core power-saving technology. For example, the Chinese invention patent application, publication number CN105429142A, describes a high-voltage power-saving system with a seamless connection function. A three-dimensional wound iron core autotransformer connected in a star configuration is connected in series at the high-voltage input end. Its output is a multi-tap voltage regulator excitation winding. Each gear output is connected to the corresponding gear of a tap changer, and the number of tap changer gears is the same as the number of transformer taps. The tap changer switches gears under the command of the tap changer controller, which comes from a central controller unit. The central controller unit drives the tap changer controller to switch gears based on the electrical parameter acquisition module and internal command settings, allowing electrical appliances to operate at the minimum appropriate voltage to save energy. Furthermore, the three-dimensional wound iron core autotransformers connected in series can improve system stability, filtering, and improve the system power factor.

[0004] Another Chinese invention patent application, with publication number CN116964699A, relates to a power-saving device that maintains a stable output voltage and reduces power consumption when the input voltage fluctuates. This device utilizes the mutual inductance of a toroidal core to regulate the supply voltage to the load, improving load performance and lifespan while conserving energy. Specifically, the toroidal core, which houses the primary and secondary coils, is securely fastened within the device using a core fixture. This allows for the easy dissipation of heat generated by the core, preventing the device from overheating.

[0005] Although the above two schemes have proposed some solutions for iron core power saving technology, they still have certain limitations. For example: on the one hand, the existing technical solutions have not established a correlation model between operating status parameters and power loss indicators, and cannot clearly understand the impact mechanism of changes in various operating status parameters on power loss. It is impossible to accurately predict the power loss under different working conditions, and it is impossible to formulate scientific and effective energy-saving optimization strategies based on the relationship between the two.

[0006] Furthermore, existing solutions lack regional energy conservation demand analysis to further identify areas with potential for energy conservation. This makes it difficult to accurately locate high-energy-consuming areas and formulate energy conservation strategies tailored to local conditions. This leads to irrational resource allocation, potentially wasting resources in areas where investment is not needed, while areas with real energy conservation potential remain untapped, making it difficult to maximize energy conservation benefits and hindering the achievement of overall energy conservation goals. Summary of the Invention

[0007] In view of this, in order to solve the problems raised in the above background technology, an intelligent power-saving protection method for an amorphous alloy three-dimensional wound core is proposed.

[0008] The purpose of the present invention can be achieved through the following technical solutions: an intelligent power-saving protection method for an amorphous alloy three-dimensional wound iron core, comprising the following steps: collecting operating data of the amorphous alloy three-dimensional wound iron core, the operating data including current harmonic distortion rate, magnetic field non-uniformity coefficient and temperature gradient.

[0009] Based on the operating data, a multi-physics field coupling simulation algorithm is used to establish a correlation model between the operating state parameters of the amorphous alloy three-dimensional wound core and the power loss index.

[0010] The energy-saving potential area of ​​the amorphous alloy three-dimensional wound core is identified according to the correlation model, and dynamic control instructions are generated in combination with the operation data of the corresponding energy-saving potential area.

[0011] Execute dynamic control instructions, synchronously collect the power loss change data of the amorphous alloy three-dimensional wound core, and use the time domain comparative analysis method to generate a power saving effect analysis report.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) The present invention collects the current harmonic distortion rate, magnetic field non-uniformity coefficient and temperature gradient of the amorphous alloy three-dimensional wound core, and then constructs a correlation model between the operating status parameters and the power loss index. This can comprehensively reflect the operating status of the equipment, accurately reveal the relationship between parameters and losses, realize loss prediction and energy-saving optimization, and assist in equipment maintenance and performance improvement.

[0013] (2) The present invention analyzes power-saving demands by region, identifies areas with power-saving potential, and performs targeted dynamic regulation. It can accurately locate the power consumption characteristics of different regions, avoid the blindness of unified energy-saving strategies, achieve precise resource allocation, and improve the effectiveness of energy-saving measures. It can also adjust strategies in real time according to changes in power consumption in each region, improve energy utilization efficiency, reduce overall energy consumption, and provide a scientific basis for regional energy planning and management. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] 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. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0015] Figure 1 Schematic diagram of the steps of the method of the present invention.

[0016] Figure 2 A schematic diagram of the positioning of corresponding monitoring points of an amorphous alloy three-dimensional wound core corresponding to an embodiment provided by the present invention.

[0017] Figure 3 A schematic diagram of a control result judgment process corresponding to an embodiment is provided.

[0018] Reference numerals: 1—sub-area, 2—monitoring point. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments 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.

[0020] See also Figure 1 As shown, the present invention provides an intelligent power-saving protection method for an amorphous alloy three-dimensional wound core, comprising the following steps: collecting operating data of the amorphous alloy three-dimensional wound core, wherein the operating data includes current harmonic distortion rate, magnetic field non-uniformity coefficient and temperature gradient.

[0021] It should be explained that the current harmonic distortion rate, magnetic field inhomogeneity coefficient, and temperature gradient are important parameters for evaluating the operating status and power loss of amorphous alloy three-dimensional wound cores. Specifically: 1. The current harmonic distortion rate reflects the degree to which the current waveform deviates from a sine wave. A higher current harmonic distortion rate indicates a greater harmonic content in the current, which increases the eddy current and hysteresis losses in the core, leading to core heating and increased power loss, affecting the normal operation and power efficiency of the amorphous alloy three-dimensional wound core. 2. The magnetic field inhomogeneity coefficient characterizes the uniformity of the magnetic field distribution on the surface of the amorphous alloy three-dimensional wound core. A larger magnetic field inhomogeneity coefficient indicates a more uneven magnetic field distribution, which may cause local magnetic saturation in the core, increase hysteresis and eddy current losses, and reduce the core's performance and power conversion efficiency. 3. The temperature gradient reflects the temperature difference between different parts of the core. A large temperature gradient may lead to uneven thermal stress distribution in the core, accelerate core aging, and affect its performance. Furthermore, thermal and magnetic interactions can further increase power loss.

[0022] In a preferred embodiment of the present invention, the current harmonic distortion rate is specifically obtained as follows: Figure 2 As shown, a three-dimensional scanning device is used to obtain the three-dimensional distribution contour data of the amorphous alloy three-dimensional wound iron core, a surface contour model is constructed, and the surface contour of the amorphous alloy three-dimensional wound iron core is meshed based on the spatial meshing technology. The surface of the amorphous alloy three-dimensional wound iron core is divided into multiple sub-areas, and the center point of each sub-area is used as a monitoring point. The area size of the sub-area is pre-set.

[0023] It should be noted that the reasons for meshing the surface contour of the amorphous alloy three-dimensional wound core based on the spatial meshing technology are: 1. To improve the accuracy of data acquisition. After the complex core surface is divided, the center point of the sub-region is used as the monitoring point, and parameters such as the current harmonic distortion rate can be accurately measured to avoid errors in the overall measurement and truly reflect the local characteristics. 2. It is convenient for in-depth analysis of the physical field. By calculating the magnetic field inhomogeneity coefficient, temperature gradient, etc. through the sub-region, the law of change of physical quantities can be clearly grasped, providing a basis for optimizing the core. 3. It simplifies model calculations, converts complex surfaces into regular sub-regions, reduces the difficulty of calculation, and improves modeling and calculation efficiency. 4. It helps to achieve precise control, formulate personalized strategies for the operating conditions of different sub-regions, and separately control the areas with energy-saving potential to improve the overall energy-saving protection effect while avoiding affecting other normal areas.

[0024] It should be explained that the reasons for using the center point of each sub-region as a monitoring point are as follows: 1. Improving measurement accuracy. The surface of the amorphous alloy three-dimensional coil core is complex. The center point can represent the overall characteristics of the sub-region, reduce interference from other points in the region, and more accurately collect data such as the current harmonic distortion rate to reflect local characteristics. 2. It is convenient for calculation and analysis. Calculations such as the magnetic field inhomogeneity coefficient and temperature gradient are performed based on the center point data, which can simplify the calculation model, reduce calculation complexity, and improve calculation efficiency. 3. It helps to achieve precise control. According to the center point data, high-loss areas can be accurately located, and special control strategies can be formulated for these areas, such as injecting reverse harmonic current to improve the overall power saving protection effect.

[0025] It's important to note that the subregion size is pre-determined based on the core's actual conditions and research needs. On the one hand, the core's size and physical properties influence the setting. Larger cores can be appropriately larger in size, while smaller ones are less so. Complex physical properties require smaller subregions to capture variations. On the other hand, research accuracy and data processing capacity are crucial considerations. For high-precision research, a smaller subregion is preferable, but this increases data processing capacity. To control data volume, a larger subregion can be appropriate. A trade-off between these two factors is crucial to determine the optimal size.

[0026] A current acquisition sensor is set at each monitoring point, and the current acquisition sensor is used to collect the current signal of each monitoring point based on an equal interval period. The current signal is then input into the harmonic analyzer to calculate the effective value of the fundamental wave and the effective value of each harmonic component through Fourier transform. The ratio of the square root of the sum of the squares of the effective values ​​of the harmonic components to the effective value of the fundamental wave is used as the current harmonic distortion rate of each monitoring point.

[0027] It should be noted that the equal-interval period duration means that during the data acquisition process, the time interval between each data acquisition is kept equal and fixed. In the method of the present invention, equal-interval period duration is adopted when acquiring current signals, magnetic flux density components, and temperature data. From the perspective of data accuracy, equal-interval acquisition can ensure that the time series of data is uniform, which is convenient for subsequent analysis. If the acquisition interval duration is not fixed, the data fluctuation pattern is difficult to analyze. For example, when analyzing the current harmonic distortion rate, equal-interval acquisition can ensure the accuracy of Fourier transform calculation. From the perspective of model establishment and regulation, equal-interval data can provide a stable data basis for establishing a correlation model, and can also make dynamic control instructions more accurate. The operating status of the core can be judged based on the stably acquired data, and the operating parameters can be adjusted in time.

[0028] In a preferred embodiment, the analytical formula of the current harmonic distortion rate is: ,in Indicates the The effective value of the subharmonic components, Indicates the effective value of the fundamental wave, Indicates the number of the harmonic component, , Indicates the number of harmonic components.

[0029] In a preferred embodiment of the present invention, the specific analysis method of the magnetic field non-uniformity coefficient is as follows: a multi-axis Hall sensor is embedded in each monitoring point on the surface of the amorphous alloy three-dimensional wound iron core to form a multi-axis Hall sensor array, and the multi-axis Hall sensor array is used to collect the magnetic flux density components in each direction of each monitoring point based on an equal interval period duration, and the magnetic flux density components in each direction are synthesized into a three-dimensional magnetic induction intensity vector to obtain the effective value of the magnetic induction intensity of each monitoring point.

[0030] In a preferred embodiment, the formula for calculating the synthetic effective value of the three-dimensional magnetic induction intensity vector is: ,in Represent the magnetic flux density components in three mutually perpendicular directions. Specifically, Indicates The magnetic flux density component in the direction, Indicates The magnetic flux density component in the direction, Indicates The component of the magnetic flux density in the direction.

[0031] The mean and standard deviation of the effective value of the magnetic induction intensity at each monitoring point are respectively calculated to obtain the corresponding average magnetic density and magnetic field standard deviation, and then the ratio of the magnetic field standard deviation to the average magnetic density is calculated to obtain the magnetic field inhomogeneity coefficient of each monitoring point.

[0032] In a preferred embodiment of the present invention, the specific analysis method of the temperature gradient is as follows: a fiber grating temperature sensor is embedded in each monitoring point on the surface of the amorphous alloy three-dimensional wound core to form a fiber grating temperature sensor array, and the fiber grating temperature sensor array is used to collect the temperature of each monitoring point based on an equal interval period, and the temperature corresponding to each adjacent monitoring point is obtained at the same time.

[0033] The temperature influence distance between adjacent monitoring points is obtained using a three-dimensional scanning device, and the temperature value of each monitoring point is calculated to obtain the corresponding temperature difference, and then the temperature difference is calculated to obtain the temperature change rate by ratio of the corresponding temperature influence distance.

[0034] The temperature gradient of each monitoring point is obtained by averaging the temperature change rates of each monitoring point and its corresponding adjacent monitoring points.

[0035] It should be noted that a greater temperature change rate indicates more dramatic temperature fluctuations within that local area, potentially leading to greater thermal stress, which can affect the performance and lifespan of the core and increase thermal-magnetic coupling losses. By averaging the temperature change rates of each monitoring point relative to its corresponding adjacent monitoring points, we can determine the temperature gradient at each monitoring point, further reflecting the overall core surface temperature changes. This provides an important basis for determining the core's operating status and developing energy-saving protection strategies.

[0036] Based on the operating data, a multi-physics field coupling simulation algorithm is used to establish a correlation model between the operating state parameters of the amorphous alloy three-dimensional wound core and the power loss index.

[0037] In a preferred embodiment of the present invention, the specific method of establishing a correlation model between the operating status parameters of the amorphous alloy three-dimensional wound core and the power loss index is as follows: extract the current harmonic distortion rate, magnetic field non-uniformity coefficient and temperature gradient of each monitoring point corresponding to each sub-region, normalize them with the preset extreme working condition reference values, and then generate the power loss index evaluation index of each sub-region through multi-physical field data fusion analysis.

[0038] In a preferred embodiment, the calculation formula of the power loss index evaluation index is: ,in 、 、 They represent the surface of the amorphous alloy three-dimensional coil core. The current harmonic distortion rate, magnetic field inhomogeneity coefficient and temperature gradient of each sub-region, Indicates the sub-area number, , Indicates the number of sub-areas, 、 、 They represent the reference values ​​of current harmonic distortion rate, magnetic field non-uniformity coefficient and temperature gradient under preset extreme working conditions. They represent the weights corresponding to the current harmonic distortion rate, magnetic field inhomogeneity coefficient and temperature gradient respectively. In practical applications, they need to be determined based on a large amount of experimental data, theoretical analysis or machine learning algorithms to accurately reflect the influence of each parameter on power loss.

[0039] It's important to note that establishing a correlation model between the operating parameters of amorphous alloy three-dimensional wound cores and energy loss indicators is of great significance. It integrates multiple parameters to accurately assess losses, avoiding the limitations of single-parameter analysis and enabling operations and maintenance personnel to accurately assess energy consumption. The evaluation index generated by the model can pinpoint areas with potential for energy savings, providing guidance for energy-saving strategies. Furthermore, the model provides a basis for generating dynamic control instructions, optimizing core operation in real time and improving energy efficiency. Furthermore, monitoring model parameters can provide early warning of failure risks, reduce the probability of equipment damage, extend the core's service life, and ensure stable power system operation.

[0040] It should be noted that the present invention collects the current harmonic distortion rate, magnetic field non-uniformity coefficient and temperature gradient of the amorphous alloy three-dimensional wound core, and then constructs a correlation model between the operating status parameters and the power loss index. It can comprehensively reflect the operating status of the equipment, accurately reveal the relationship between parameters and losses, realize loss prediction and energy-saving optimization, and assist in equipment maintenance and performance improvement.

[0041] The energy-saving potential area of ​​the amorphous alloy three-dimensional wound core is identified according to the correlation model, and dynamic control instructions are generated in combination with the operation data of the corresponding energy-saving potential area.

[0042] In a preferred embodiment of the present invention, the specific analysis method of the power-saving potential area is as follows: the magnetic field inhomogeneity coefficient and temperature gradient of each sub-area are extracted, and then a correlation analysis is performed to obtain the thermomagnetic coupling coefficient of each sub-area, and the thermomagnetic coupling coefficient is compared with a preset thermomagnetic coupling coefficient threshold. If the thermomagnetic coupling coefficient of a sub-area is greater than or equal to the thermomagnetic coupling coefficient threshold, the sub-area is identified as a thermomagnetic coupling loss hotspot area.

[0043] In a preferred embodiment, the calculation formula of the thermal magnetic coupling coefficient is: , where the thermal magnetic coupling coefficient It is obtained by taking the numerical part of the calculation result of this formula. The thermal magnetic coupling coefficient shows the correlation between the temperature gradient and the magnetic field gradient.

[0044] It should be explained that the threshold value of the thermal magnetic coupling coefficient is a standard value determined comprehensively based on the design parameters, operating requirements, and long-term experimental and practical experience of the amorphous alloy three-dimensional wound core.

[0045] The current harmonic distortion rate and magnetic field inhomogeneity coefficient of each sub-region are extracted and compared with the preset current harmonic distortion rate threshold and magnetic field inhomogeneity coefficient threshold, respectively. If the current harmonic distortion rate of a sub-region is greater than the current harmonic distortion rate threshold or the magnetic field inhomogeneity coefficient is greater than the magnetic field inhomogeneity coefficient threshold, the region is identified as a high loss potential region.

[0046] It should be noted that excessively high current harmonic distortion will increase eddy current losses in the core, as harmonic currents generate additional eddy currents in the core, causing it to heat up and, in turn, increase energy loss. A larger magnetic field inhomogeneity coefficient means a more pronounced inhomogeneity in the magnetic field distribution, which can cause the magnetic flux density in local areas of the core to be too high or too low. When the local magnetic flux density is too high, the core material is more likely to reach magnetic saturation, increasing the area of ​​the hysteresis loop and increasing hysteresis losses. Therefore, when the current harmonic distortion rate of a subregion is greater than the current harmonic distortion rate threshold or the magnetic field inhomogeneity coefficient is greater than the magnetic field inhomogeneity coefficient threshold, that region can be identified as a high-loss potential region.

[0047] The power loss index evaluation index of each sub-region is compared with a preset power loss index evaluation index threshold. If the power loss index evaluation index of a sub-region is greater than the power loss index evaluation index threshold, the sub-region is identified as an abnormal power loss region.

[0048] If a sub-region is one or more of a thermal-magnetic coupling loss hotspot region, a high loss potential region, and an abnormal power loss region, the sub-region is identified as a power-saving potential region.

[0049] It should be noted that when a sub-region meets any of the following conditions: a hotspot for thermal-magnetic coupling loss, a high-loss potential area, an abnormal power loss area, or meets multiple conditions simultaneously, it is identified as a potential power-saving area. This is because the losses in these areas are relatively high. By taking targeted power-saving measures, such as optimizing magnetic field distribution, controlling current harmonics, and improving heat dissipation conditions, there is a greater possibility of reducing the power loss in the area, thereby achieving an overall power-saving effect. In other words, these areas have a large room for energy saving, so they are called power-saving potential areas.

[0050] In a preferred embodiment of the present invention, the specific method of generating dynamic control instructions is as follows: the temperature of each sub-area is compared with a preset reference temperature threshold, the area with a temperature greater than the reference temperature threshold is recorded as a temperature-exceeding area, the number of temperature-exceeding areas is counted, and then the proportion is calculated with the total number of sub-areas to obtain the proportion of the number of temperature-exceeding areas; if the proportion of the number of temperature-exceeding areas is greater than the preset threshold of the proportion of the number of temperature-exceeding areas, the cooling fan is started to cool the temperature-exceeding areas.

[0051] It's important to note that when the percentage exceeds the threshold, the cooling fan is activated to cool the overheated area. This is an automatic and effective response mechanism. The cooling fan increases air flow, removes heat, and lowers the temperature in the overheated area, preventing damage to the device due to prolonged overheating. This ensures stable operation and extends the device's lifespan.

[0052] If there is a hot spot area of ​​thermal-magnetic coupling loss, adjust the input voltage phase angle.

[0053] It should be noted that the presence of hotspots of thermal-magnetic coupling losses during the operation of amorphous alloy three-dimensional wound cores indicates additional energy loss and localized overheating due to the interaction between the uneven magnetic field and the temperature gradient. Adjusting the input voltage phase angle is a possible solution for the following reasons: 1. Changing the magnetic field distribution: The phase angle of the input voltage determines the development and distribution of the magnetic field in the core. By adjusting the phase angle, the distribution of the magnetic field in the core can be altered, adjusting the originally uneven magnetic field distribution. This can potentially reduce the magnetic field strength in the hotspot and minimize losses caused by the concentrated magnetic field.

[0054] 2. Reduce the thermal magnetic coupling effect: Due to changes in the magnetic field distribution, the magnetic field inhomogeneity coefficient in the hotspot area will change, which in turn affects the thermal magnetic coupling coefficient. Because the thermal magnetic coupling loss is closely related to the magnetic field inhomogeneity coefficient, adjusting the magnetic field distribution can reduce the thermal magnetic coupling effect and reduce the additional loss and heat in the hotspot area.

[0055] 3. Optimize the operating state of the core: Properly adjusting the input voltage phase angle can make the overall magnetic flux distribution of the core more uniform, and the hysteresis loss and eddy current loss of each part will be more balanced, avoiding excessive loss and temperature rise in local areas, thereby optimizing the operating state of the core and improving the efficiency and reliability of the equipment.

[0056] If there are no hot spots of thermal-magnetic coupling losses and there are areas of high loss potential, the active filter is enabled to inject reverse harmonic currents.

[0057] It's important to note that the reason for enabling an active power filter to inject reverse harmonic current is as follows: 1. Targeting the causes of high loss potential: The formation of high loss potential areas can be due to excessively high current harmonic distortion. The presence of harmonics in the current increases eddy current losses in the iron core, causing core heating and increased energy loss. Active power filters detect harmonic currents in the line and then inject harmonic currents of equal magnitude and opposite direction, thereby canceling out the original harmonic currents and reducing current harmonic distortion.

[0058] 2. Reduce loss risk: By injecting reverse harmonic current through active filters, the harmonic components in the current can be effectively reduced, thereby reducing the additional losses caused by harmonics, preventing high-loss potential areas from further developing into actual high-loss areas or even fault areas, and ensuring the normal operation of equipment and efficient use of electricity.

[0059] 3. Protect equipment and optimize operation: If high loss potential areas are not addressed promptly, they may cause long-term damage to equipment, affecting its service life and performance. Enabling active power filters can improve current quality, reduce the burden on equipment, optimize equipment operating conditions, and improve the stability and reliability of the entire system.

[0060] Execute dynamic control instructions, synchronously collect the power loss change data of the amorphous alloy three-dimensional wound core, and use the time domain comparative analysis method to generate a power saving effect analysis report.

[0061] In a preferred embodiment of the present invention, the power loss change data includes a loss reduction rate and an energy efficiency improvement index.

[0062] It's important to note that the loss reduction rate refers to the percentage reduction in energy loss of equipment or systems after implementing certain energy-saving measures or technological improvements, compared to before the improvements were made. It reflects the effectiveness of energy-saving measures in reducing energy loss. A higher loss reduction rate indicates a more effective energy-saving measure, helping businesses or users reduce energy costs and energy waste, while also improving energy efficiency and minimizing environmental impact.

[0063] It should be noted that the Energy Efficiency Improvement Index is a comprehensive indicator used to measure the degree of improvement in energy efficiency of equipment, systems, or entire production processes. It considers multiple factors, such as energy consumption, production output, and product quality, to comprehensively assess changes in energy efficiency. The Energy Efficiency Improvement Index provides a more comprehensive reflection of improvements in energy efficiency, focusing not only on reductions in energy consumption but also taking into account other factors in the production process. It can help evaluate the effectiveness of energy management measures, formulate more scientific and reasonable energy policies and development plans, and promote energy conservation and sustainable development across society.

[0064] In a preferred embodiment of the present invention, the specific analysis method of the power loss change data is as follows: obtain the average power data before regulation and the average power data under the same load conditions after regulation, and then perform difference calculation and normalization to obtain the loss reduction rate.

[0065] The output power and input power under the same load conditions before and after regulation are obtained, the ratio of the output power and input power is calculated to obtain the total system efficiency before and after regulation, the difference between the total system efficiency after regulation and the total system efficiency before regulation is calculated and normalized to obtain the energy efficiency improvement index.

[0066] In a preferred embodiment of the present invention, the specific analysis of the power saving effect analysis report also includes: Figure 3As shown, the loss reduction rate and energy efficiency improvement index are compared with the preset expected loss reduction rate and expected energy efficiency improvement index. If the loss reduction rate is greater than the loss reduction rate threshold and the energy efficiency improvement index is greater than the energy efficiency improvement index threshold, the control is judged to be successful, otherwise the control is judged to have failed.

[0067] It should be noted that when the loss reduction rate exceeds the loss reduction rate threshold and the energy efficiency improvement index exceeds the energy efficiency improvement index threshold, the control measures have achieved positive results. The energy loss of the equipment or system has been reduced more significantly than expected, while energy efficiency has also been improved beyond expectations. This indicates that the control measures implemented, such as optimizing equipment operating parameters, adopting energy-saving technologies, or improving production processes, are effective and have achieved the pre-set energy saving and efficiency improvement targets. Therefore, the control measures are considered successful. Conversely, if the loss reduction rate is less than or equal to the loss reduction rate threshold, or the energy efficiency improvement index is less than or equal to the energy efficiency improvement index threshold, the control measures have not achieved the expected results. This may be due to insufficient control measures, inappropriate methods, or unaccounted-for factors that have impacted the energy saving and efficiency improvement results. Further analysis of the causes and adjustment of the control strategy are necessary to achieve the expected energy saving and efficiency improvement targets.

[0068] It should be noted that the present invention analyzes power-saving needs by region, identifies areas with power-saving potential, and performs targeted dynamic regulation. It can accurately locate the power consumption characteristics of different regions, avoid the blindness of unified energy-saving strategies, achieve precise allocation of resources, and improve the effectiveness of energy-saving measures. It can also adjust strategies in real time according to changes in power consumption in each region, improve energy utilization efficiency, reduce overall energy consumption, and provide a scientific basis for regional energy planning and management.

[0069] The above contents are merely examples and explanations of the concept of the present invention. Those skilled in the art may make various modifications or additions to the described specific embodiments or replace them in a similar manner. As long as they do not deviate from the concept of the invention or exceed the scope defined by the present invention, they should all fall within the scope of protection of the present invention.

Claims

1. An intelligent power-saving protection method for an amorphous alloy three-dimensional wound core, characterized in that: The following steps are involved: Collecting operating data of the amorphous alloy three-dimensional wound core, the operating data including current harmonic distortion rate, magnetic field non-uniformity coefficient and temperature gradient; The specific method of obtaining the current harmonic distortion rate is as follows: A three-dimensional scanning device is used to obtain three-dimensional distribution profile data of the amorphous alloy three-dimensional wound iron core, and a surface profile model is constructed. The surface profile of the amorphous alloy three-dimensional wound iron core is meshed based on the spatial meshing technology, and the surface of the amorphous alloy three-dimensional wound iron core is divided into multiple sub-areas. The center point of each sub-area is used as a monitoring point, and the area size of the sub-area is preset; A current acquisition sensor is provided at each monitoring point, and the current signal of each monitoring point is collected by the current acquisition sensor based on an equal interval period. The current signal is then input into a harmonic analyzer to calculate the effective value of the fundamental wave and the effective value of each harmonic component through Fourier transform, and the ratio of the square root of the sum of the squares of the effective values ​​of the harmonic components to the effective value of the fundamental wave is used as the current harmonic distortion rate of each monitoring point; The specific analysis method of the magnetic field inhomogeneity coefficient is as follows: A multi-axis Hall sensor array is formed by embedding a multi-axis Hall sensor at each monitoring point on the surface of the amorphous alloy three-dimensional wound core. The multi-axis Hall sensor array is used to collect the magnetic flux density components in each direction of each monitoring point based on an equal interval period. The magnetic flux density components in each direction are synthesized into a three-dimensional magnetic induction intensity vector to obtain the effective value of the magnetic induction intensity at each monitoring point. The mean and standard deviation of the effective value of the magnetic induction intensity at each monitoring point are calculated to obtain the corresponding average magnetic density and magnetic field standard deviation, and then the ratio of the magnetic field standard deviation to the average magnetic density is calculated to obtain the magnetic field inhomogeneity coefficient of each monitoring point. Based on the operating data, a multi-physics field coupling simulation algorithm is used to establish a correlation model between the operating state parameters and power loss indicators of the amorphous alloy three-dimensional wound core; The current harmonic distortion rate, magnetic field non-uniformity coefficient, and temperature gradient of each monitoring point in each monitoring area are extracted and normalized with the preset extreme working condition reference values. Then, the power loss index evaluation index of each monitoring area is generated through multi-physics field data fusion analysis. Identify the energy-saving potential areas of the amorphous alloy three-dimensional wound core based on the correlation model, and generate dynamic control instructions based on the operating data of the corresponding energy-saving potential areas; Execute dynamic control instructions, synchronously collect the power loss change data of the amorphous alloy three-dimensional wound core, and use the time domain comparative analysis method to generate a power saving effect analysis report.

2. The intelligent power-saving protection method for an amorphous alloy three-dimensional wound core according to claim 1, characterized in that: The specific analysis method of the temperature gradient is as follows: Embedding fiber Bragg grating temperature sensors at each monitoring point on the surface of the amorphous alloy three-dimensional wound core to form a fiber Bragg grating temperature sensor array, using the fiber Bragg grating temperature sensor array to collect the temperature of each monitoring point based on an equal interval period, and simultaneously obtain the temperature of each adjacent monitoring point; Using a three-dimensional scanning device to obtain the temperature influence distance between each adjacent monitoring point, performing a difference calculation between the temperature value of each monitoring point and each adjacent monitoring point to obtain a corresponding temperature difference, and then performing a ratio calculation between the temperature difference and the corresponding temperature influence distance to obtain a temperature change rate; The temperature gradient of each monitoring point is obtained by averaging the temperature change rates of each monitoring point and its corresponding adjacent monitoring points.

3. The intelligent power-saving protection method for an amorphous alloy three-dimensional wound core according to claim 1, characterized in that: The specific analysis method of the power saving potential area is as follows: Extract the magnetic field inhomogeneity coefficient and temperature gradient of each monitoring area, and then perform correlation analysis to obtain the thermomagnetic coupling coefficient of each monitoring area. The thermomagnetic coupling coefficient is compared with a preset thermomagnetic coupling coefficient threshold. If the thermomagnetic coupling coefficient of a monitoring area is greater than or equal to the thermomagnetic coupling coefficient threshold, the monitoring area is identified as a thermomagnetic coupling loss hotspot area. The current harmonic distortion rate and magnetic field inhomogeneity coefficient of each monitoring area are extracted and compared with the preset current harmonic distortion rate threshold and magnetic field inhomogeneity coefficient threshold respectively. If the current harmonic distortion rate of a monitoring area is greater than the current harmonic distortion rate threshold or the magnetic field inhomogeneity coefficient is greater than the magnetic field inhomogeneity coefficient threshold, the area is identified as a high loss potential area; Compare the power loss index evaluation index of each monitoring area with the pre-set power loss index evaluation index threshold. If the power loss index evaluation index of a monitoring area is greater than the power loss index evaluation index threshold, identify the monitoring area as an abnormal power loss area. If a monitoring area is one or more of a thermal-magnetic coupling loss hotspot area, a high loss potential area, and an abnormal power loss area, the monitoring area is identified as a power-saving potential area.

4. The intelligent power-saving protection method for an amorphous alloy three-dimensional wound core according to claim 3, characterized in that: The specific method of generating the dynamic control instruction is as follows: The temperature of each monitoring area is compared with a preset reference temperature threshold. The area with a temperature greater than the reference temperature threshold is recorded as an over-temperature area. The number of over-temperature areas is counted and then the percentage is calculated with the total number of monitoring areas to obtain the percentage of over-temperature areas. If the percentage of over-temperature areas is greater than the preset threshold, the cooling fan is started to cool the over-temperature area. If there is a hot spot area of ​​thermal-magnetic coupling loss, adjust the input voltage phase angle; If there are no hot spots of thermal-magnetic coupling losses and there are areas of high loss potential, the active filter is enabled to inject reverse harmonic currents.

5. The intelligent power-saving protection method for an amorphous alloy three-dimensional wound core according to claim 1, characterized in that: The power loss change data includes a loss reduction rate and an energy efficiency improvement index.

6. The intelligent power-saving protection method for an amorphous alloy three-dimensional wound core according to claim 5, characterized in that: The specific analysis method of the power loss change data is as follows: Obtain the average power data before regulation and the average power data under the same load conditions after regulation, and then calculate the difference and normalize it to obtain the loss reduction rate; The output power and input power under the same load conditions before and after regulation are obtained, the ratio of the output power and input power is calculated to obtain the total system efficiency before and after regulation, the difference between the total system efficiency after regulation and the total system efficiency before regulation is calculated and normalized to obtain the energy efficiency improvement index.

7. The intelligent power-saving protection method for an amorphous alloy three-dimensional wound core according to claim 5, characterized in that: The detailed analysis of the power saving effect analysis report also includes: The loss reduction rate and energy efficiency improvement index are compared with the preset expected loss reduction rate and expected energy efficiency improvement index. If the loss reduction rate is greater than the loss reduction rate threshold and the energy efficiency improvement index is greater than the energy efficiency improvement index threshold, the control is judged to be successful; otherwise, the control is judged to have failed.

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