Operation method of power grid monitoring system and power grid monitoring system

Abstract

The invention discloses an operation method of a power grid monitoring system and the power grid monitoring system, and relates to the technical field of power grid monitoring. Acquiring an initial current detection signal, an initial voltage detection signal, a temperature detection signal and a humidity detection signal of a plurality of corresponding areas and moments; based on the plurality of temperature detection signals, the plurality of humidity detection signals and adaptive calibration models in the plurality of main control devices, calibrating the plurality of initial current detection signals and the plurality of initial voltage detection signals to obtain a plurality of calibration current detection signals and a plurality of calibration voltage detection signals; and the plurality of main control devices respectively perform edge calculation according to the plurality of corresponding calibration current detection signals, the plurality of corresponding calibration voltage detection signals and the corresponding region information, and respectively output power grid state information of the corresponding region to a cloud end, so that the cloud end displays the power grid state of the corresponding region based on the plurality of power grid state information. The invention aims to improve the accuracy of power grid monitoring.

Description

Technical Field

[0001] This invention relates to the field of power grid monitoring technology, and in particular to an operation method and a power grid monitoring system. Background Technology

[0002] In current power systems, low-voltage monitoring equipment typically only collects basic electrical parameters such as voltage and current. However, its ability to perform high-precision real-time monitoring of key indicators such as three-phase imbalance, harmonic content, and voltage flicker is often insufficient. This limitation makes it difficult for existing low-voltage monitoring equipment to meet the high demands of modern power systems for transparent grid management.

[0003] Furthermore, traditional equipment relies on manual analysis for data processing, which limits its ability to automatically identify fault types, provide early warnings, and perform predictive maintenance. Due to this lack of intelligence, operational efficiency is often low, and fault response times are relatively long. Summary of the Invention

[0004] The main objective of this invention is to provide an operation method and system for a power grid monitoring system, aiming to improve the accuracy of power grid monitoring.

[0005] To achieve the above objectives, this invention proposes an operation method for a power grid monitoring system, applicable to a power grid monitoring system comprising a cloud platform and multiple power grid monitoring devices respectively located in multiple areas. Each of the multiple power grid monitoring devices includes multiple main control devices communicatively connected to the cloud platform, multiple current detection devices for detecting power grid current, multiple voltage detection devices for detecting power grid voltage, multiple temperature detection devices for detecting system ambient temperature, and multiple humidity detection devices for detecting system ambient humidity. The operation method includes:

[0006] Based on multiple current detection devices, multiple voltage detection devices, multiple temperature detection devices, and multiple humidity detection devices, initial current detection signals, initial voltage detection signals, temperature detection signals, and humidity detection signals are acquired for multiple corresponding regions and times.

[0007] Based on the multiple temperature detection signals, multiple humidity detection signals and multiple adaptive calibration models in the main control device, the multiple initial current detection signals and multiple initial voltage detection signals are calibrated to obtain multiple calibration current detection signals and multiple calibration voltage detection signals.

[0008] The multiple main control devices perform edge computing based on multiple corresponding calibration current detection signals, multiple corresponding calibration voltage detection signals and corresponding area information, and output the power grid status information of the corresponding area to the cloud, so that the cloud displays the power grid status of the corresponding area based on the multiple power grid status information.

[0009] In one embodiment, the power grid monitoring device further includes a device access expansion device, which is electrically connected to the main control device; before the step of acquiring multiple initial current detection signals, initial voltage detection signals, temperature detection signals, and humidity detection signals corresponding to multiple regions and times, the method further includes:

[0010] In response to the device access signal output by the device access expansion device, the corresponding device access signal is fed back to the cloud.

[0011] Based on the device access signal, the cloud sends a corresponding processing program to the main control device, so that the main control device executes the processing program.

[0012] In response to a device disconnection signal output by the device access expansion device, the corresponding processing program is deleted based on the device disconnection signal.

[0013] In one embodiment, the method of sending a corresponding processing program from the cloud to the main control device based on the device access signal, so that the main control device executes the processing program, specifically includes:

[0014] The device access signal is used to confirm the access device of the expansion device.

[0015] According to the type of the access device, the corresponding processing program is sent to the main control device;

[0016] The main control device stores the processing program in a separate memory partition.

[0017] In one embodiment, after the step of acquiring initial current detection signals, initial voltage detection signals, temperature detection signals, and humidity detection signals for multiple corresponding regions and times, the method further includes:

[0018] Based on the multiple temperature detection signals, the multiple humidity detection signals, and the environmental assessment models in the multiple main control devices, stability assessment parameters of the multiple power grid monitoring devices are obtained.

[0019] When the stability assessment parameter is greater than the preset stability parameter, a stability warning signal of the power grid monitoring device is output.

[0020] In one embodiment, after the step of enabling the cloud to display the power grid status of a corresponding area based on multiple power grid status information, the method further includes:

[0021] Based on the comparison results between the power grid status information and multiple preset power grid status parameters, the power grid fault type in the corresponding area is confirmed.

[0022] Output the corresponding early warning signal based on the type of power grid fault in the corresponding area.

[0023] In one embodiment, the power grid monitoring device further includes a multi-protocol communication switching device, which is electrically connected to the main control device and communicatively connected to the cloud; the operation method further includes:

[0024] Based on the communication quality detection signal output by the multi-protocol communication switching device, the communication quality of the current communication mode is confirmed.

[0025] If it is confirmed that the communication quality of the current communication mode is lower than the preset communication quality, the system will switch to the next communication mode.

[0026] Based on the comparison between the communication quality of the current communication mode and the preset communication quality, determine whether to repeat the previous step.

[0027] In one embodiment, after determining whether to repeat the previous step by comparing the communication quality based on the current communication mode with the preset communication quality, the method further includes:

[0028] If it is confirmed that the communication quality of each of the aforementioned communication modes is lower than the preset communication quality, the communication mode with the highest communication quality is identified and switched according to the communication quality level of each communication mode.

[0029] The present invention also proposes a power grid monitoring system, which includes a cloud platform and multiple power grid monitoring devices;

[0030] The cloud and the multiple power grid monitoring devices respectively store the operation method of the power grid monitoring system as described in any of the above.

[0031] In one embodiment, the power grid monitoring device includes:

[0032] Main control device;

[0033] A multi-protocol communication switching device is electrically connected to the main control device and communicatively connected to the cloud. The multi-protocol communication switching device is used for communication interaction between the main control device and the cloud, and is also used to switch communication modes when a communication switching signal is received.

[0034] A voltage detection device is electrically connected to the main control device; the voltage detection device is used to detect the operating voltage of the power grid and output a corresponding voltage detection signal.

[0035] A current detection device is electrically connected to the main control device; the current detection device is used to detect the operating current of the power grid and output a corresponding current detection signal.

[0036] A temperature detection device is electrically connected to the main control device; the temperature detection device is used to detect the ambient temperature of the power grid detection device and output a temperature detection signal.

[0037] A humidity detection device is provided, wherein the temperature detection device is electrically connected to the main control device; the temperature detection device is used to detect the ambient humidity of the power grid detection device and output a humidity detection signal.

[0038] The device access expansion device is electrically connected to the main control device; when the device access expansion device connects to or disconnects an external device, it outputs a corresponding device access signal or device disconnection signal to the main control device.

[0039] This invention provides a power grid monitoring system operation method and system that effectively improves the accuracy of power grid monitoring. It is important to note that when the power grid detects low voltage, voltage and current sensors are prone to significant deviations from actual results due to ambient temperature and humidity. The power grid monitoring system operation method includes acquiring multiple initial current detection signals, initial voltage detection signals, temperature detection signals, and humidity detection signals corresponding to different regions and times; calibrating the initial current and initial voltage detection signals based on the multiple temperature and humidity detection signals and an adaptive calibration model in multiple main control devices to obtain multiple calibrated current and voltage detection signals; and performing edge computing based on the corresponding calibrated current and voltage detection signals and corresponding region information in each main control device, and outputting the corresponding region's power grid status information to the cloud, so that the cloud displays the power grid status of the corresponding region based on the multiple power grid status information. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0041] Figure 1 This is a flowchart illustrating the operation method of the power grid monitoring system of the present invention;

[0042] Figure 2 This is a flowchart illustrating another embodiment of the operation method of the power grid monitoring system of the present invention;

[0043] Figure 3 This is a flowchart illustrating an embodiment of the operation method of the power grid monitoring system of the present invention;

[0044] Figure 4 A flowchart illustrating another embodiment of the operation method of the power grid monitoring system of the present invention;

[0045] Figure 5 This is a flowchart illustrating another embodiment of the operation method of the power grid monitoring system of the present invention.

[0046] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0047] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0048] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0049] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0050] In current power systems, low-voltage monitoring equipment typically only collects basic electrical parameters such as voltage and current. However, its ability to perform high-precision real-time monitoring of key indicators such as three-phase imbalance, harmonic content, and voltage flicker is often insufficient. This limitation makes it difficult for existing low-voltage monitoring equipment to meet the high demands of modern power systems for transparent grid management.

[0051] Furthermore, traditional equipment relies on manual analysis for data processing, which limits its ability to automatically identify fault types, provide early warnings, and perform predictive maintenance. Due to this lack of intelligence, operational efficiency is often low, and fault response times are relatively long.

[0052] Therefore, refer to Figure 1 To address the aforementioned problems, this invention proposes an operation method for a power grid monitoring system. The power grid monitoring system includes a cloud platform and multiple power grid monitoring devices located in multiple areas. Each of the multiple power grid monitoring devices includes multiple main control devices connected to the cloud platform, multiple current detection devices for detecting power grid current, multiple voltage detection devices for detecting power grid voltage, multiple temperature detection devices for detecting system ambient temperature, and multiple humidity detection devices for detecting system ambient humidity. The operation method includes:

[0053] Step S100: Based on the multiple current detection devices, multiple voltage detection devices, multiple temperature detection devices, and multiple humidity detection devices, acquire initial current detection signals, initial voltage detection signals, temperature detection signals, and humidity detection signals for multiple corresponding regions and times;

[0054] Step S200: Based on the multiple temperature detection signals, the multiple humidity detection signals, and the adaptive calibration model in the multiple main control devices, calibrate the multiple initial current detection signals and the multiple initial voltage detection signals to obtain multiple calibration current detection signals and multiple calibration voltage detection signals;

[0055] Step S300: The multiple main control devices perform edge computing based on the multiple corresponding calibration current detection signals, the multiple corresponding calibration voltage detection signals and the corresponding area information, and output the power grid status information of the corresponding area to the cloud, so that the cloud displays the power grid status of the corresponding area based on the multiple power grid status information.

[0056] In this embodiment, multiple power grid monitoring devices are respectively installed in different areas of the power grid. These areas can be connection areas for power grid power-on or power-off, or power transmission areas. The main control device can be implemented using a main controller, such as a DSP (Digital Signal Processor), FPGA (Field Programmable Gate Array), MCU (Microcontroller Unit), or SOC (System-on-Chip). The current detection device can be implemented using a high-precision Hall current sensor (accuracy ±0.5%) or a shunt circuit with corresponding accuracy requirements. The voltage detection device can be implemented using a voltage transformer, voltage divider circuit, and amplifier circuit with corresponding accuracy requirements. The temperature detection device can be implemented using a resistance temperature detector, thermocouple device, etc. The humidity detection device can be implemented using a capacitive humidity sensor, resistive humidity sensor, or humidity-sensitive capacitive polymer sensor, etc.

[0057] It's important to note that while changes in electrical parameters directly caused by humidity are relatively small, increased humidity can lead to condensation, which in extreme cases can form a water film on equipment surfaces. This not only poses a short-circuit risk but also affects the performance of electrical connections and insulation materials, indirectly impacting the accuracy of voltage and current measurements. In high-humidity environments, if capacitive or resistive humidity sensors are used for environmental monitoring, humidity itself won't directly affect voltage and current measurements. However, if these sensors coexist with power grid monitoring equipment in the same environment without proper isolation, moisture intrusion may cause malfunctions or inaccuracies in the monitoring equipment. Furthermore, for shunts used in current sensing, the resistance value changes with temperature, leading to measurement errors. For Hall effect sensors used in current sensing, temperature changes affect the sensitivity and bias voltage of the Hall element, resulting in measurement errors. For resistors in voltage divider circuits used in voltage sensing, like shunts, the resistance value of ordinary resistors also changes with temperature, affecting measurement accuracy. For analog-to-digital converters (ADCs), temperature changes can affect the ADC's reference voltage source and internal circuitry, causing reading deviations.

[0058] In this embodiment, the voltage detection device, current detection device, temperature detection device, and humidity detection device in the power grid monitoring device can perform intermittent detection according to a preset duration. The detection intervals between the voltage detection device, current detection device, temperature detection device, and humidity detection device can be the same or different, and can be adjusted according to actual needs. Through intermittent detection, the main control device can acquire multiple initial current detection signals, multiple initial voltage detection signals, multiple temperature detection signals, and multiple humidity detection signals within a time period. Based on an adaptive calibration model preset within the main control device, the multiple initial current detection signals and multiple initial voltage detection signals are calibrated to obtain multiple calibrated current detection signals and multiple calibrated voltage detection signals. The adaptive calibration model can be trained using multiple sets of data on the effects of different temperatures and humidity levels on voltage and current detection.

[0059] In this embodiment, after receiving multiple calibration current detection signals and multiple calibration voltage detection signals, the main control device uses edge computing to confirm the power grid status of the area where the corresponding power grid monitoring device is located. This can be understood as effectively reducing latency, saving bandwidth, and improving application response speed and reliability by moving data processing tasks from a centralized cloud to a power grid monitoring device closer to the data source. The main control device uploads power grid status information to the cloud, enabling the cloud to confirm the operating status of the power grid in the corresponding area. The cloud communicates with the main control device in multiple power grid monitoring devices to obtain the operating status of the power grid in multiple different areas. Power grid managers can quickly and accurately confirm the operating status of the power grid in different areas through the cloud, thus quickly and accurately identifying the area requiring maintenance when a fault occurs in the corresponding area of ​​the power grid.

[0060] By employing a power grid monitoring system operation method and system, the accuracy of power grid monitoring can be effectively improved. It should be noted that when the power grid detects low voltage, voltage and current sensors are prone to significant deviations from actual results due to ambient temperature and humidity. The operation method of the power grid monitoring system includes acquiring multiple initial current detection signals, initial voltage detection signals, temperature detection signals, and humidity detection signals corresponding to different regions and times; calibrating the initial current detection signals and initial voltage detection signals based on the multiple temperature detection signals, multiple humidity detection signals, and an adaptive calibration model in multiple main control devices to obtain multiple calibrated current detection signals and multiple calibrated voltage detection signals; and having the multiple main control devices perform edge computing based on the multiple corresponding calibrated current detection signals, multiple corresponding calibrated voltage detection signals, and corresponding region information, and output the power grid status information of the corresponding region to the cloud, so that the cloud displays the power grid status of the corresponding region based on the multiple power grid status information.

[0061] refer to Figure 2 In one embodiment of the present invention, the power grid monitoring device further includes a device access expansion device, which is electrically connected to the main control device; before the step of acquiring multiple initial current detection signals, initial voltage detection signals, temperature detection signals, and humidity detection signals corresponding to multiple regions and times, the method further includes:

[0062] Step S400: In response to the device access signal output by the device access expansion device, feed back the corresponding device access signal to the cloud;

[0063] Step S500: Based on the device access signal, the cloud sends a corresponding processing program to the main control device, so that the main control device executes the processing program;

[0064] Step S600: In response to the device disconnection signal output by the device access expansion device, delete the corresponding processing program according to the device disconnection signal.

[0065] In this embodiment, different external devices, such as distributed power sources and energy storage systems, may be connected to the power grid in different areas. It is important to note that the connection of these external devices will affect the stability of the power grid. Therefore, the power grid monitoring device needs to acquire the relevant operating parameters of the external devices to adjust the preset parameters in the main control device. For example, if the power grid monitoring device detects voltage fluctuations in a corresponding area, but these fluctuations are caused by the energy storage device performing peak shaving and valley filling, the power grid monitoring device will misjudge a power grid fault in that area if it does not adjust the preset parameters accordingly. Therefore, the power grid monitoring device is equipped with a corresponding device access expansion device. By electrically connecting the device access expansion device to the external devices, the relevant operating parameters of the external devices can be acquired to adjust its own preset parameters. It is understood that the external devices connected in different areas may be different; therefore, corresponding processing programs are needed to handle the corresponding operating parameters input by different external devices. However, the storage space of the main control device in the power grid monitoring device is limited. Therefore, the main control device cannot store all the operating programs for handling the relevant operating parameters output by different external devices.

[0066] Optionally, refer to Figure 3 The method of sending a corresponding processing program from the cloud to the main control device based on the device access signal, so that the main control device executes the processing program, specifically includes:

[0067] Step S510: Confirm the access device of the device access expansion device based on the device access signal;

[0068] Step S520: Based on the type of the access device, send the corresponding processing program to the main control device;

[0069] The main control device stores the processing program in a separate memory partition.

[0070] In this embodiment, the main control device receives the device access signal output by the device access expansion device, identifies the accessed device, and then sends the corresponding device access signal back to the cloud. Based on the device access signal, the cloud sends the corresponding processing program to the main control device to handle the relevant operating parameters of the external device. It can be understood that if the external device is disconnected from the device access expansion device, the main control device will delete the corresponding processing program based on the device disconnection signal to ensure sufficient storage space in the main control device. Furthermore, to facilitate the storage and deletion of processing programs, the main control device stores the processing programs in a separate memory partition.

[0071] In one embodiment of the present invention, after the step of acquiring the initial current detection signal, initial voltage detection signal, temperature detection signal, and humidity detection signal of multiple corresponding regions and times, the method further includes:

[0072] Based on the multiple temperature detection signals, the multiple humidity detection signals, and the environmental assessment models in the multiple main control devices, stability assessment parameters of the multiple power grid monitoring devices are obtained.

[0073] When the stability assessment parameter is greater than the preset stability parameter, a stability warning signal of the power grid monitoring device is output.

[0074] Understandably, power grid monitoring devices are installed in the external environment and directly exposed to the natural environment. The casings of these devices are mostly made of metal. Therefore, they are susceptible to corrosion from the external environment, leading to varying degrees of damage. Furthermore, the external environments faced by power grid monitoring devices differ across regions. Consequently, the service life of these devices varies. By setting up corresponding environmental assessment models in the main control device, based on multiple temperature and humidity detection signals, stability assessment parameters for the corresponding power grid monitoring devices are obtained. Understandably, for ease of manufacturing, the manufacturing specifications of power grid monitoring devices are consistent. Therefore, the preset stability parameters set in the cloud are applicable to power grid monitoring devices in different regions. The cloud receives stability assessment parameters uploaded by power grid monitoring devices in different regions. By comparing the stability assessment parameters with the preset stability parameters, it can determine the health status of the power grid monitoring devices in different regions. When the stability assessment parameters exceed the preset stability parameters, a stability warning signal is output, prompting personnel to go to the corresponding area for inspection and maintenance to prevent monitoring failures.

[0075] refer to Figure 4 In this embodiment, after the step of enabling the cloud to display the power grid status of the corresponding area based on multiple power grid status information, the method further includes:

[0076] Step S310: Based on the comparison results between the power grid status information and multiple preset power grid status parameters, confirm the power grid fault type of the corresponding area;

[0077] Step S320: Output the corresponding early warning signal according to the power grid fault type of the corresponding area.

[0078] In this embodiment, the cloud receives power grid status information uploaded by power grid monitoring devices in different regions and compares this information with multiple preset power grid status parameters to determine the type of power grid fault in the corresponding region. It can be understood that the power grid may experience short-circuit faults, voltage anomalies, overload faults, etc., and the power grid status information required to determine these fault types is different, as are the corresponding preset power grid status parameters. Therefore, the cloud needs to use multiple preset power grid status parameters and the power grid status information uploaded by the power grid monitoring devices to determine the type of power grid fault in the corresponding region and output a corresponding early warning signal based on the fault type to facilitate rapid confirmation of fault troubleshooting work by personnel.

[0079] refer to Figure 5In this embodiment, the power grid monitoring device further includes a multi-protocol communication switching device, which is electrically connected to the main control device and communicatively connected to the cloud; the operation method further includes:

[0080] Step S700: Based on the communication quality detection signal output by the multi-protocol communication switching device, confirm the communication quality of the current communication mode;

[0081] Step S800: If it is confirmed that the communication quality of the current communication mode is lower than the preset communication quality, control the switch to the next communication mode;

[0082] Step S900: Based on the comparison between the communication quality of the current communication mode and the preset communication quality, determine whether to repeat the previous step.

[0083] In this embodiment, the power grid monitoring device and the cloud communicate wirelessly. Specifically, the wireless communication method can be 4G / 5G, spread spectrum microwave communication, etc. It is understood that communication conditions may vary in different regions. Therefore, using a single communication protocol will lead to communication failures in the power grid monitoring device in that region if the protocol cannot effectively meet the corresponding communication conditions. Therefore, in this embodiment, the power grid monitoring device is equipped with a multi-protocol communication switching device. This multi-protocol communication switching device enables communication between the power grid monitoring device and the cloud, and it also has the function of detecting communication quality and outputting a corresponding communication quality detection signal. Therefore, the main control device in the power grid monitoring device can receive the communication quality detection signal output by the multi-protocol communication switching device and the preset communication quality set therein to confirm whether the communication mode under the current communication protocol meets the communication requirements. If it is confirmed that the communication quality of the current communication mode is lower than the preset communication quality, the multi-protocol communication switching device is controlled to switch to the next communication mode to select a communication mode that meets the communication requirements.

[0084] Optionally, after determining whether to repeat the previous step by comparing the communication quality based on the current communication mode with the preset communication quality, the method further includes:

[0085] If it is confirmed that the communication quality of each of the aforementioned communication modes is lower than the preset communication quality, the communication mode with the highest communication quality is identified and switched according to the communication quality level of each communication mode.

[0086] In this embodiment, if the communication quality of multiple communication modes in the multi-protocol communication switching device is lower than the preset communication quality, then the communication quality of all communication modules is sorted from high to low, and the communication mode with the highest communication quality is selected for communication.

[0087] The present invention also proposes a power grid monitoring system, which includes a cloud platform and multiple power grid monitoring devices;

[0088] The cloud and the multiple power grid monitoring devices respectively store the operation method of the power grid monitoring system as described in any of the above.

[0089] In one embodiment, the power grid monitoring device includes:

[0090] Main control device;

[0091] A multi-protocol communication switching device is electrically connected to the main control device and communicatively connected to the cloud. The multi-protocol communication switching device is used for communication interaction between the main control device and the cloud, and is also used to switch communication modes when a communication switching signal is received.

[0092] A voltage detection device is electrically connected to the main control device; the voltage detection device is used to detect the operating voltage of the power grid and output a corresponding voltage detection signal.

[0093] A current detection device is electrically connected to the main control device; the current detection device is used to detect the operating current of the power grid and output a corresponding current detection signal.

[0094] A temperature detection device is electrically connected to the main control device; the temperature detection device is used to detect the ambient temperature of the power grid detection device and output a temperature detection signal.

[0095] A humidity detection device is provided, wherein the temperature detection device is electrically connected to the main control device; the temperature detection device is used to detect the ambient humidity of the power grid detection device and output a humidity detection signal.

[0096] The device access expansion device is electrically connected to the main control device; when the device access expansion device connects to or disconnects an external device, it outputs a corresponding device access signal or device disconnection signal to the main control device.

[0097] It is worth noting that since the power grid monitoring system of the present invention is based on the above-described operation method of the power grid monitoring system, the embodiments of the power grid monitoring system of the present invention include all the technical solutions of all embodiments of the above-described operation method of the power grid monitoring system, and the technical effects achieved are exactly the same, so they will not be repeated here.

[0098] This invention also proposes a battery module, which includes the battery management circuit or the battery control board described above. It is worth noting that since the battery module of this invention is based on the aforementioned battery management circuit or battery control board, the embodiments of the battery module of this invention include all the technical solutions of all embodiments of the aforementioned battery management circuit or battery control board, and the achieved technical effects are exactly the same, which will not be repeated here.

[0099] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. An operation method for a power grid monitoring system, applied to a power grid monitoring system, characterized in that, The power grid monitoring system includes a cloud platform and multiple power grid monitoring devices located in multiple regions. Each of the multiple power grid monitoring devices includes multiple main control devices that communicate with the cloud platform, multiple current detection devices for detecting power grid current, multiple voltage detection devices for detecting power grid voltage, multiple temperature detection devices for detecting system ambient temperature, and multiple humidity detection devices for detecting system ambient humidity. The operating method includes: Based on multiple current detection devices, multiple voltage detection devices, multiple temperature detection devices, and multiple humidity detection devices, initial current detection signals, initial voltage detection signals, temperature detection signals, and humidity detection signals are acquired for multiple corresponding regions and times. Based on the multiple temperature detection signals, multiple humidity detection signals and multiple adaptive calibration models in the main control device, the multiple initial current detection signals and multiple initial voltage detection signals are calibrated to obtain multiple calibration current detection signals and multiple calibration voltage detection signals. The multiple main control devices perform edge computing based on multiple corresponding calibration current detection signals, multiple corresponding calibration voltage detection signals and corresponding area information, and output the power grid status information of the corresponding area to the cloud, so that the cloud displays the power grid status of the corresponding area based on the multiple power grid status information.

2. The operation method of the power grid monitoring system as described in claim 1, characterized in that, The power grid monitoring device further includes a device access expansion device, which is electrically connected to the main control device; before the step of acquiring multiple initial current detection signals, initial voltage detection signals, temperature detection signals, and humidity detection signals corresponding to multiple regions and times, the method further includes: In response to the device access signal output by the device access expansion device, the corresponding device access signal is fed back to the cloud. Based on the device access signal, the cloud sends a corresponding processing program to the main control device, so that the main control device executes the processing program. In response to a device disconnection signal output by the device access expansion device, the corresponding processing program is deleted based on the device disconnection signal.

3. The operation method of the power grid monitoring system as described in claim 2, characterized in that, The method of sending a corresponding processing program from the cloud to the main control device based on the device access signal, so that the main control device executes the processing program, specifically includes: The device access signal is used to confirm the access device of the expansion device. According to the type of the access device, the corresponding processing program is sent to the main control device; The main control device stores the processing program in a separate memory partition.

4. The operation method of the power grid monitoring system as described in claim 1, characterized in that, After the step of acquiring initial current detection signals, initial voltage detection signals, temperature detection signals, and humidity detection signals for multiple corresponding regions and times, the method further includes: Based on the multiple temperature detection signals, the multiple humidity detection signals, and the environmental assessment models in the multiple main control devices, stability assessment parameters of the multiple power grid monitoring devices are obtained. When the stability assessment parameter is greater than the preset stability parameter, a stability warning signal of the power grid monitoring device is output.

5. The operation method of the power grid monitoring system as described in claim 1, characterized in that, After the step of enabling the cloud to display the power grid status of the corresponding area based on multiple power grid status information, the method further includes: Based on the comparison results between the power grid status information and multiple preset power grid status parameters, the power grid fault type in the corresponding area is confirmed. Output the corresponding early warning signal based on the type of power grid fault in the corresponding area.

6. The operation method of the power grid monitoring system as described in claim 1, characterized in that, The power grid monitoring device further includes a multi-protocol communication switching device, which is electrically connected to the main control device and also communicates with the cloud platform; the operating method further includes: Based on the communication quality detection signal output by the multi-protocol communication switching device, the communication quality of the current communication mode is confirmed. If it is confirmed that the communication quality of the current communication mode is lower than the preset communication quality, the system will switch to the next communication mode. Based on the comparison between the communication quality of the current communication mode and the preset communication quality, determine whether to repeat the previous step.

7. The operation method of the power grid monitoring system as described in claim 6, characterized in that, After determining whether to repeat the previous step by comparing the communication quality based on the current communication mode with the preset communication quality, the method further includes: If it is confirmed that the communication quality of each of the aforementioned communication modes is lower than the preset communication quality, the communication mode with the highest communication quality is identified and switched according to the communication quality level of each communication mode.

8. A power grid monitoring system, characterized in that, The power grid monitoring system includes a cloud platform and multiple power grid monitoring devices; The cloud and the plurality of power grid monitoring devices respectively store the operation method of the power grid monitoring system as described in any one of claims 1 to 7.

9. The power grid monitoring system as described in claim 8, characterized in that, The power grid monitoring device includes: Main control device; A multi-protocol communication switching device is electrically connected to the main control device and communicatively connected to the cloud. The multi-protocol communication switching device is used for communication interaction between the main control device and the cloud, and is also used to switch communication modes when a communication switching signal is received. A voltage detection device is electrically connected to the main control device; the voltage detection device is used to detect the operating voltage of the power grid and output a corresponding voltage detection signal. A current detection device is electrically connected to the main control device; the current detection device is used to detect the operating current of the power grid and output a corresponding current detection signal. A temperature detection device is electrically connected to the main control device; the temperature detection device is used to detect the ambient temperature of the power grid detection device and output a temperature detection signal. A humidity detection device is provided, wherein the temperature detection device is electrically connected to the main control device; the temperature detection device is used to detect the ambient humidity of the power grid detection device and output a humidity detection signal. The device access expansion device is electrically connected to the main control device; when the device access expansion device connects to or disconnects an external device, it outputs a corresponding device access signal or device disconnection signal to the main control device.

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